code.delx.au - pulseaudio/blob - src/pulsecore/protocol-native.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   5   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   6
   7   PulseAudio is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU Lesser General Public License as published
   9   by the Free Software Foundation; either version 2.1 of the License,
  10   or (at your option) any later version.
  11
  12   PulseAudio is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with PulseAudio; if not, write to the Free Software
  19   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  20   USA.
  21 ***/
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <string.h>
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <unistd.h>
  31
  32 #include <pulse/rtclock.h>
  33 #include <pulse/timeval.h>
  34 #include <pulse/version.h>
  35 #include <pulse/utf8.h>
  36 #include <pulse/util.h>
  37 #include <pulse/xmalloc.h>
  38 #include <pulse/internal.h>
  39
  40 #include <pulsecore/native-common.h>
  41 #include <pulsecore/packet.h>
  42 #include <pulsecore/client.h>
  43 #include <pulsecore/source-output.h>
  44 #include <pulsecore/sink-input.h>
  45 #include <pulsecore/pstream.h>
  46 #include <pulsecore/tagstruct.h>
  47 #include <pulsecore/pdispatch.h>
  48 #include <pulsecore/pstream-util.h>
  49 #include <pulsecore/namereg.h>
  50 #include <pulsecore/core-scache.h>
  51 #include <pulsecore/core-subscribe.h>
  52 #include <pulsecore/log.h>
  53 #include <pulsecore/strlist.h>
  54 #include <pulsecore/shared.h>
  55 #include <pulsecore/sample-util.h>
  56 #include <pulsecore/creds.h>
  57 #include <pulsecore/core-util.h>
  58 #include <pulsecore/ipacl.h>
  59 #include <pulsecore/thread-mq.h>
  60
  61 #include "protocol-native.h"
  62
  63 /* #define PROTOCOL_NATIVE_DEBUG */
  64
  65 /* Kick a client if it doesn't authenticate within this time */
  66 #define AUTH_TIMEOUT (60 * PA_USEC_PER_SEC)
  67
  68 /* Don't accept more connection than this */
  69 #define MAX_CONNECTIONS 64
  70
  71 #define MAX_MEMBLOCKQ_LENGTH (4*1024*1024) /* 4MB */
  72 #define DEFAULT_TLENGTH_MSEC 2000 /* 2s */
  73 #define DEFAULT_PROCESS_MSEC 20   /* 20ms */
  74 #define DEFAULT_FRAGSIZE_MSEC DEFAULT_TLENGTH_MSEC
  75
  76 struct pa_native_protocol;
  77
  78 typedef struct record_stream {
  79     pa_msgobject parent;
  80
  81     pa_native_connection *connection;
  82     uint32_t index;
  83
  84     pa_source_output *source_output;
  85     pa_memblockq *memblockq;
  86
  87     bool adjust_latency:1;
  88     bool early_requests:1;
  89
  90     /* Requested buffer attributes */
  91     pa_buffer_attr buffer_attr_req;
  92     /* Fixed-up and adjusted buffer attributes */
  93     pa_buffer_attr buffer_attr;
  94
  95     pa_atomic_t on_the_fly;
  96     pa_usec_t configured_source_latency;
  97     size_t drop_initial;
  98
  99     /* Only updated after SOURCE_OUTPUT_MESSAGE_UPDATE_LATENCY */
 100     size_t on_the_fly_snapshot;
 101     pa_usec_t current_monitor_latency;
 102     pa_usec_t current_source_latency;
 103 } record_stream;
 104
 105 #define RECORD_STREAM(o) (record_stream_cast(o))
 106 PA_DEFINE_PRIVATE_CLASS(record_stream, pa_msgobject);
 107
 108 typedef struct output_stream {
 109     pa_msgobject parent;
 110 } output_stream;
 111
 112 #define OUTPUT_STREAM(o) (output_stream_cast(o))
 113 PA_DEFINE_PRIVATE_CLASS(output_stream, pa_msgobject);
 114
 115 typedef struct playback_stream {
 116     output_stream parent;
 117
 118     pa_native_connection *connection;
 119     uint32_t index;
 120
 121     pa_sink_input *sink_input;
 122     pa_memblockq *memblockq;
 123
 124     bool adjust_latency:1;
 125     bool early_requests:1;
 126
 127     bool is_underrun:1;
 128     bool drain_request:1;
 129     uint32_t drain_tag;
 130     uint32_t syncid;
 131
 132     /* Optimization to avoid too many rewinds with a lot of small blocks */
 133     pa_atomic_t seek_or_post_in_queue;
 134     int64_t seek_windex;
 135
 136     pa_atomic_t missing;
 137     pa_usec_t configured_sink_latency;
 138     /* Requested buffer attributes */
 139     pa_buffer_attr buffer_attr_req;
 140     /* Fixed-up and adjusted buffer attributes */
 141     pa_buffer_attr buffer_attr;
 142
 143     /* Only updated after SINK_INPUT_MESSAGE_UPDATE_LATENCY */
 144     int64_t read_index, write_index;
 145     size_t render_memblockq_length;
 146     pa_usec_t current_sink_latency;
 147     uint64_t playing_for, underrun_for;
 148 } playback_stream;
 149
 150 #define PLAYBACK_STREAM(o) (playback_stream_cast(o))
 151 PA_DEFINE_PRIVATE_CLASS(playback_stream, output_stream);
 152
 153 typedef struct upload_stream {
 154     output_stream parent;
 155
 156     pa_native_connection *connection;
 157     uint32_t index;
 158
 159     pa_memchunk memchunk;
 160     size_t length;
 161     char *name;
 162     pa_sample_spec sample_spec;
 163     pa_channel_map channel_map;
 164     pa_proplist *proplist;
 165 } upload_stream;
 166
 167 #define UPLOAD_STREAM(o) (upload_stream_cast(o))
 168 PA_DEFINE_PRIVATE_CLASS(upload_stream, output_stream);
 169
 170 struct pa_native_connection {
 171     pa_msgobject parent;
 172     pa_native_protocol *protocol;
 173     pa_native_options *options;
 174     bool authorized:1;
 175     bool is_local:1;
 176     uint32_t version;
 177     pa_client *client;
 178     pa_pstream *pstream;
 179     pa_pdispatch *pdispatch;
 180     pa_idxset *record_streams, *output_streams;
 181     uint32_t rrobin_index;
 182     pa_subscription *subscription;
 183     pa_time_event *auth_timeout_event;
 184 };
 185
 186 #define PA_NATIVE_CONNECTION(o) (pa_native_connection_cast(o))
 187 PA_DEFINE_PRIVATE_CLASS(pa_native_connection, pa_msgobject);
 188
 189 struct pa_native_protocol {
 190     PA_REFCNT_DECLARE;
 191
 192     pa_core *core;
 193     pa_idxset *connections;
 194
 195     pa_strlist *servers;
 196     pa_hook hooks[PA_NATIVE_HOOK_MAX];
 197
 198     pa_hashmap *extensions;
 199 };
 200
 201 enum {
 202     SOURCE_OUTPUT_MESSAGE_UPDATE_LATENCY = PA_SOURCE_OUTPUT_MESSAGE_MAX
 203 };
 204
 205 enum {
 206     SINK_INPUT_MESSAGE_POST_DATA = PA_SINK_INPUT_MESSAGE_MAX, /* data from main loop to sink input */
 207     SINK_INPUT_MESSAGE_DRAIN, /* disabled prebuf, get playback started. */
 208     SINK_INPUT_MESSAGE_FLUSH,
 209     SINK_INPUT_MESSAGE_TRIGGER,
 210     SINK_INPUT_MESSAGE_SEEK,
 211     SINK_INPUT_MESSAGE_PREBUF_FORCE,
 212     SINK_INPUT_MESSAGE_UPDATE_LATENCY,
 213     SINK_INPUT_MESSAGE_UPDATE_BUFFER_ATTR
 214 };
 215
 216 enum {
 217     PLAYBACK_STREAM_MESSAGE_REQUEST_DATA,      /* data requested from sink input from the main loop */
 218     PLAYBACK_STREAM_MESSAGE_UNDERFLOW,
 219     PLAYBACK_STREAM_MESSAGE_OVERFLOW,
 220     PLAYBACK_STREAM_MESSAGE_DRAIN_ACK,
 221     PLAYBACK_STREAM_MESSAGE_STARTED,
 222     PLAYBACK_STREAM_MESSAGE_UPDATE_TLENGTH
 223 };
 224
 225 enum {
 226     RECORD_STREAM_MESSAGE_POST_DATA         /* data from source output to main loop */
 227 };
 228
 229 enum {
 230     CONNECTION_MESSAGE_RELEASE,
 231     CONNECTION_MESSAGE_REVOKE
 232 };
 233
 234 static bool sink_input_process_underrun_cb(pa_sink_input *i);
 235 static int sink_input_pop_cb(pa_sink_input *i, size_t length, pa_memchunk *chunk);
 236 static void sink_input_kill_cb(pa_sink_input *i);
 237 static void sink_input_suspend_cb(pa_sink_input *i, bool suspend);
 238 static void sink_input_moving_cb(pa_sink_input *i, pa_sink *dest);
 239 static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes);
 240 static void sink_input_update_max_rewind_cb(pa_sink_input *i, size_t nbytes);
 241 static void sink_input_update_max_request_cb(pa_sink_input *i, size_t nbytes);
 242 static void sink_input_send_event_cb(pa_sink_input *i, const char *event, pa_proplist *pl);
 243
 244 static void native_connection_send_memblock(pa_native_connection *c);
 245 static void playback_stream_request_bytes(struct playback_stream*s);
 246
 247 static void source_output_kill_cb(pa_source_output *o);
 248 static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk);
 249 static void source_output_suspend_cb(pa_source_output *o, bool suspend);
 250 static void source_output_moving_cb(pa_source_output *o, pa_source *dest);
 251 static pa_usec_t source_output_get_latency_cb(pa_source_output *o);
 252 static void source_output_send_event_cb(pa_source_output *o, const char *event, pa_proplist *pl);
 253
 254 static int sink_input_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk);
 255 static int source_output_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk);
 256
 257 static void command_exit(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 258 static void command_create_playback_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 259 static void command_drain_playback_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 260 static void command_create_record_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 261 static void command_delete_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 262 static void command_auth(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 263 static void command_set_client_name(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 264 static void command_lookup(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 265 static void command_stat(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 266 static void command_get_playback_latency(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 267 static void command_get_record_latency(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 268 static void command_create_upload_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 269 static void command_finish_upload_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 270 static void command_play_sample(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 271 static void command_remove_sample(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 272 static void command_get_info(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 273 static void command_get_info_list(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 274 static void command_get_server_info(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 275 static void command_subscribe(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 276 static void command_set_volume(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 277 static void command_set_mute(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 278 static void command_cork_playback_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 279 static void command_trigger_or_flush_or_prebuf_playback_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 280 static void command_set_default_sink_or_source(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 281 static void command_set_stream_name(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 282 static void command_kill(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 283 static void command_load_module(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 284 static void command_unload_module(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 285 static void command_cork_record_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 286 static void command_flush_record_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 287 static void command_move_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 288 static void command_suspend(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 289 static void command_set_stream_buffer_attr(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 290 static void command_update_stream_sample_rate(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 291 static void command_update_proplist(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 292 static void command_remove_proplist(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 293 static void command_extension(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 294 static void command_set_card_profile(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 295 static void command_set_sink_or_source_port(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 296 static void command_set_port_latency_offset(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 297
 298 static const pa_pdispatch_cb_t command_table[PA_COMMAND_MAX] = {
 299     [PA_COMMAND_ERROR] = NULL,
 300     [PA_COMMAND_TIMEOUT] = NULL,
 301     [PA_COMMAND_REPLY] = NULL,
 302     [PA_COMMAND_CREATE_PLAYBACK_STREAM] = command_create_playback_stream,
 303     [PA_COMMAND_DELETE_PLAYBACK_STREAM] = command_delete_stream,
 304     [PA_COMMAND_DRAIN_PLAYBACK_STREAM] = command_drain_playback_stream,
 305     [PA_COMMAND_CREATE_RECORD_STREAM] = command_create_record_stream,
 306     [PA_COMMAND_DELETE_RECORD_STREAM] = command_delete_stream,
 307     [PA_COMMAND_AUTH] = command_auth,
 308     [PA_COMMAND_REQUEST] = NULL,
 309     [PA_COMMAND_EXIT] = command_exit,
 310     [PA_COMMAND_SET_CLIENT_NAME] = command_set_client_name,
 311     [PA_COMMAND_LOOKUP_SINK] = command_lookup,
 312     [PA_COMMAND_LOOKUP_SOURCE] = command_lookup,
 313     [PA_COMMAND_STAT] = command_stat,
 314     [PA_COMMAND_GET_PLAYBACK_LATENCY] = command_get_playback_latency,
 315     [PA_COMMAND_GET_RECORD_LATENCY] = command_get_record_latency,
 316     [PA_COMMAND_CREATE_UPLOAD_STREAM] = command_create_upload_stream,
 317     [PA_COMMAND_DELETE_UPLOAD_STREAM] = command_delete_stream,
 318     [PA_COMMAND_FINISH_UPLOAD_STREAM] = command_finish_upload_stream,
 319     [PA_COMMAND_PLAY_SAMPLE] = command_play_sample,
 320     [PA_COMMAND_REMOVE_SAMPLE] = command_remove_sample,
 321     [PA_COMMAND_GET_SINK_INFO] = command_get_info,
 322     [PA_COMMAND_GET_SOURCE_INFO] = command_get_info,
 323     [PA_COMMAND_GET_CLIENT_INFO] = command_get_info,
 324     [PA_COMMAND_GET_CARD_INFO] = command_get_info,
 325     [PA_COMMAND_GET_MODULE_INFO] = command_get_info,
 326     [PA_COMMAND_GET_SINK_INPUT_INFO] = command_get_info,
 327     [PA_COMMAND_GET_SOURCE_OUTPUT_INFO] = command_get_info,
 328     [PA_COMMAND_GET_SAMPLE_INFO] = command_get_info,
 329     [PA_COMMAND_GET_SINK_INFO_LIST] = command_get_info_list,
 330     [PA_COMMAND_GET_SOURCE_INFO_LIST] = command_get_info_list,
 331     [PA_COMMAND_GET_MODULE_INFO_LIST] = command_get_info_list,
 332     [PA_COMMAND_GET_CLIENT_INFO_LIST] = command_get_info_list,
 333     [PA_COMMAND_GET_CARD_INFO_LIST] = command_get_info_list,
 334     [PA_COMMAND_GET_SINK_INPUT_INFO_LIST] = command_get_info_list,
 335     [PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST] = command_get_info_list,
 336     [PA_COMMAND_GET_SAMPLE_INFO_LIST] = command_get_info_list,
 337     [PA_COMMAND_GET_SERVER_INFO] = command_get_server_info,
 338     [PA_COMMAND_SUBSCRIBE] = command_subscribe,
 339
 340     [PA_COMMAND_SET_SINK_VOLUME] = command_set_volume,
 341     [PA_COMMAND_SET_SINK_INPUT_VOLUME] = command_set_volume,
 342     [PA_COMMAND_SET_SOURCE_VOLUME] = command_set_volume,
 343     [PA_COMMAND_SET_SOURCE_OUTPUT_VOLUME] = command_set_volume,
 344
 345     [PA_COMMAND_SET_SINK_MUTE] = command_set_mute,
 346     [PA_COMMAND_SET_SINK_INPUT_MUTE] = command_set_mute,
 347     [PA_COMMAND_SET_SOURCE_MUTE] = command_set_mute,
 348     [PA_COMMAND_SET_SOURCE_OUTPUT_MUTE] = command_set_mute,
 349
 350     [PA_COMMAND_SUSPEND_SINK] = command_suspend,
 351     [PA_COMMAND_SUSPEND_SOURCE] = command_suspend,
 352
 353     [PA_COMMAND_CORK_PLAYBACK_STREAM] = command_cork_playback_stream,
 354     [PA_COMMAND_FLUSH_PLAYBACK_STREAM] = command_trigger_or_flush_or_prebuf_playback_stream,
 355     [PA_COMMAND_TRIGGER_PLAYBACK_STREAM] = command_trigger_or_flush_or_prebuf_playback_stream,
 356     [PA_COMMAND_PREBUF_PLAYBACK_STREAM] = command_trigger_or_flush_or_prebuf_playback_stream,
 357
 358     [PA_COMMAND_CORK_RECORD_STREAM] = command_cork_record_stream,
 359     [PA_COMMAND_FLUSH_RECORD_STREAM] = command_flush_record_stream,
 360
 361     [PA_COMMAND_SET_DEFAULT_SINK] = command_set_default_sink_or_source,
 362     [PA_COMMAND_SET_DEFAULT_SOURCE] = command_set_default_sink_or_source,
 363     [PA_COMMAND_SET_PLAYBACK_STREAM_NAME] = command_set_stream_name,
 364     [PA_COMMAND_SET_RECORD_STREAM_NAME] = command_set_stream_name,
 365     [PA_COMMAND_KILL_CLIENT] = command_kill,
 366     [PA_COMMAND_KILL_SINK_INPUT] = command_kill,
 367     [PA_COMMAND_KILL_SOURCE_OUTPUT] = command_kill,
 368     [PA_COMMAND_LOAD_MODULE] = command_load_module,
 369     [PA_COMMAND_UNLOAD_MODULE] = command_unload_module,
 370
 371     [PA_COMMAND_GET_AUTOLOAD_INFO___OBSOLETE] = NULL,
 372     [PA_COMMAND_GET_AUTOLOAD_INFO_LIST___OBSOLETE] = NULL,
 373     [PA_COMMAND_ADD_AUTOLOAD___OBSOLETE] = NULL,
 374     [PA_COMMAND_REMOVE_AUTOLOAD___OBSOLETE] = NULL,
 375
 376     [PA_COMMAND_MOVE_SINK_INPUT] = command_move_stream,
 377     [PA_COMMAND_MOVE_SOURCE_OUTPUT] = command_move_stream,
 378
 379     [PA_COMMAND_SET_PLAYBACK_STREAM_BUFFER_ATTR] = command_set_stream_buffer_attr,
 380     [PA_COMMAND_SET_RECORD_STREAM_BUFFER_ATTR] = command_set_stream_buffer_attr,
 381
 382     [PA_COMMAND_UPDATE_PLAYBACK_STREAM_SAMPLE_RATE] = command_update_stream_sample_rate,
 383     [PA_COMMAND_UPDATE_RECORD_STREAM_SAMPLE_RATE] = command_update_stream_sample_rate,
 384
 385     [PA_COMMAND_UPDATE_RECORD_STREAM_PROPLIST] = command_update_proplist,
 386     [PA_COMMAND_UPDATE_PLAYBACK_STREAM_PROPLIST] = command_update_proplist,
 387     [PA_COMMAND_UPDATE_CLIENT_PROPLIST] = command_update_proplist,
 388
 389     [PA_COMMAND_REMOVE_RECORD_STREAM_PROPLIST] = command_remove_proplist,
 390     [PA_COMMAND_REMOVE_PLAYBACK_STREAM_PROPLIST] = command_remove_proplist,
 391     [PA_COMMAND_REMOVE_CLIENT_PROPLIST] = command_remove_proplist,
 392
 393     [PA_COMMAND_SET_CARD_PROFILE] = command_set_card_profile,
 394
 395     [PA_COMMAND_SET_SINK_PORT] = command_set_sink_or_source_port,
 396     [PA_COMMAND_SET_SOURCE_PORT] = command_set_sink_or_source_port,
 397
 398     [PA_COMMAND_SET_PORT_LATENCY_OFFSET] = command_set_port_latency_offset,
 399
 400     [PA_COMMAND_EXTENSION] = command_extension
 401 };
 402
 403 /* structure management */
 404
 405 /* Called from main context */
 406 static void upload_stream_unlink(upload_stream *s) {
 407     pa_assert(s);
 408
 409     if (!s->connection)
 410         return;
 411
 412     pa_assert_se(pa_idxset_remove_by_data(s->connection->output_streams, s, NULL) == s);
 413     s->connection = NULL;
 414     upload_stream_unref(s);
 415 }
 416
 417 /* Called from main context */
 418 static void upload_stream_free(pa_object *o) {
 419     upload_stream *s = UPLOAD_STREAM(o);
 420     pa_assert(s);
 421
 422     upload_stream_unlink(s);
 423
 424     pa_xfree(s->name);
 425
 426     if (s->proplist)
 427         pa_proplist_free(s->proplist);
 428
 429     if (s->memchunk.memblock)
 430         pa_memblock_unref(s->memchunk.memblock);
 431
 432     pa_xfree(s);
 433 }
 434
 435 /* Called from main context */
 436 static upload_stream* upload_stream_new(
 437         pa_native_connection *c,
 438         const pa_sample_spec *ss,
 439         const pa_channel_map *map,
 440         const char *name,
 441         size_t length,
 442         pa_proplist *p) {
 443
 444     upload_stream *s;
 445
 446     pa_assert(c);
 447     pa_assert(ss);
 448     pa_assert(name);
 449     pa_assert(length > 0);
 450     pa_assert(p);
 451
 452     s = pa_msgobject_new(upload_stream);
 453     s->parent.parent.parent.free = upload_stream_free;
 454     s->connection = c;
 455     s->sample_spec = *ss;
 456     s->channel_map = *map;
 457     s->name = pa_xstrdup(name);
 458     pa_memchunk_reset(&s->memchunk);
 459     s->length = length;
 460     s->proplist = pa_proplist_copy(p);
 461     pa_proplist_update(s->proplist, PA_UPDATE_MERGE, c->client->proplist);
 462
 463     pa_idxset_put(c->output_streams, s, &s->index);
 464
 465     return s;
 466 }
 467
 468 /* Called from main context */
 469 static void record_stream_unlink(record_stream *s) {
 470     pa_assert(s);
 471
 472     if (!s->connection)
 473         return;
 474
 475     if (s->source_output) {
 476         pa_source_output_unlink(s->source_output);
 477         pa_source_output_unref(s->source_output);
 478         s->source_output = NULL;
 479     }
 480
 481     pa_assert_se(pa_idxset_remove_by_data(s->connection->record_streams, s, NULL) == s);
 482     s->connection = NULL;
 483     record_stream_unref(s);
 484 }
 485
 486 /* Called from main context */
 487 static void record_stream_free(pa_object *o) {
 488     record_stream *s = RECORD_STREAM(o);
 489     pa_assert(s);
 490
 491     record_stream_unlink(s);
 492
 493     pa_memblockq_free(s->memblockq);
 494     pa_xfree(s);
 495 }
 496
 497 /* Called from main context */
 498 static int record_stream_process_msg(pa_msgobject *o, int code, void*userdata, int64_t offset, pa_memchunk *chunk) {
 499     record_stream *s = RECORD_STREAM(o);
 500     record_stream_assert_ref(s);
 501
 502     if (!s->connection)
 503         return -1;
 504
 505     switch (code) {
 506
 507         case RECORD_STREAM_MESSAGE_POST_DATA:
 508
 509             /* We try to keep up to date with how many bytes are
 510              * currently on the fly */
 511             pa_atomic_sub(&s->on_the_fly, chunk->length);
 512
 513             if (pa_memblockq_push_align(s->memblockq, chunk) < 0) {
 514 /*                 pa_log_warn("Failed to push data into output queue."); */
 515                 return -1;
 516             }
 517
 518             if (!pa_pstream_is_pending(s->connection->pstream))
 519                 native_connection_send_memblock(s->connection);
 520
 521             break;
 522     }
 523
 524     return 0;
 525 }
 526
 527 /* Called from main context */
 528 static void fix_record_buffer_attr_pre(record_stream *s) {
 529
 530     size_t frame_size;
 531     pa_usec_t orig_fragsize_usec, fragsize_usec, source_usec;
 532
 533     pa_assert(s);
 534
 535     /* This function will be called from the main thread, before as
 536      * well as after the source output has been activated using
 537      * pa_source_output_put()! That means it may not touch any
 538      * ->thread_info data! */
 539
 540     frame_size = pa_frame_size(&s->source_output->sample_spec);
 541     s->buffer_attr = s->buffer_attr_req;
 542
 543     if (s->buffer_attr.maxlength == (uint32_t) -1 || s->buffer_attr.maxlength > MAX_MEMBLOCKQ_LENGTH)
 544         s->buffer_attr.maxlength = MAX_MEMBLOCKQ_LENGTH;
 545     if (s->buffer_attr.maxlength <= 0)
 546         s->buffer_attr.maxlength = (uint32_t) frame_size;
 547
 548     if (s->buffer_attr.fragsize == (uint32_t) -1)
 549         s->buffer_attr.fragsize = (uint32_t) pa_usec_to_bytes(DEFAULT_FRAGSIZE_MSEC*PA_USEC_PER_MSEC, &s->source_output->sample_spec);
 550     if (s->buffer_attr.fragsize <= 0)
 551         s->buffer_attr.fragsize = (uint32_t) frame_size;
 552
 553     orig_fragsize_usec = fragsize_usec = pa_bytes_to_usec(s->buffer_attr.fragsize, &s->source_output->sample_spec);
 554
 555     if (s->early_requests) {
 556
 557         /* In early request mode we need to emulate the classic
 558          * fragment-based playback model. We do this setting the source
 559          * latency to the fragment size. */
 560
 561         source_usec = fragsize_usec;
 562
 563     } else if (s->adjust_latency) {
 564
 565         /* So, the user asked us to adjust the latency according to
 566          * what the source can provide. Half the latency will be
 567          * spent on the hw buffer, half of it in the async buffer
 568          * queue we maintain for each client. */
 569
 570         source_usec = fragsize_usec/2;
 571
 572     } else {
 573
 574         /* Ok, the user didn't ask us to adjust the latency, hence we
 575          * don't */
 576
 577         source_usec = (pa_usec_t) -1;
 578     }
 579
 580     if (source_usec != (pa_usec_t) -1)
 581         s->configured_source_latency = pa_source_output_set_requested_latency(s->source_output, source_usec);
 582     else
 583         s->configured_source_latency = 0;
 584
 585     if (s->early_requests) {
 586
 587         /* Ok, we didn't necessarily get what we were asking for, so
 588          * let's tell the user */
 589
 590         fragsize_usec = s->configured_source_latency;
 591
 592     } else if (s->adjust_latency) {
 593
 594         /* Now subtract what we actually got */
 595
 596         if (fragsize_usec >= s->configured_source_latency*2)
 597             fragsize_usec -= s->configured_source_latency;
 598         else
 599             fragsize_usec = s->configured_source_latency;
 600     }
 601
 602     if (pa_usec_to_bytes(orig_fragsize_usec, &s->source_output->sample_spec) !=
 603         pa_usec_to_bytes(fragsize_usec, &s->source_output->sample_spec))
 604
 605         s->buffer_attr.fragsize = (uint32_t) pa_usec_to_bytes(fragsize_usec, &s->source_output->sample_spec);
 606
 607     if (s->buffer_attr.fragsize <= 0)
 608         s->buffer_attr.fragsize = (uint32_t) frame_size;
 609 }
 610
 611 /* Called from main context */
 612 static void fix_record_buffer_attr_post(record_stream *s) {
 613     size_t base;
 614
 615     pa_assert(s);
 616
 617     /* This function will be called from the main thread, before as
 618      * well as after the source output has been activated using
 619      * pa_source_output_put()! That means it may not touch and
 620      * ->thread_info data! */
 621
 622     base = pa_frame_size(&s->source_output->sample_spec);
 623
 624     s->buffer_attr.fragsize = (s->buffer_attr.fragsize/base)*base;
 625     if (s->buffer_attr.fragsize <= 0)
 626         s->buffer_attr.fragsize = base;
 627
 628     if (s->buffer_attr.fragsize > s->buffer_attr.maxlength)
 629         s->buffer_attr.fragsize = s->buffer_attr.maxlength;
 630 }
 631
 632 /* Called from main context */
 633 static record_stream* record_stream_new(
 634         pa_native_connection *c,
 635         pa_source *source,
 636         pa_sample_spec *ss,
 637         pa_channel_map *map,
 638         pa_idxset *formats,
 639         pa_buffer_attr *attr,
 640         pa_cvolume *volume,
 641         bool muted,
 642         bool muted_set,
 643         pa_source_output_flags_t flags,
 644         pa_proplist *p,
 645         bool adjust_latency,
 646         bool early_requests,
 647         bool relative_volume,
 648         bool peak_detect,
 649         pa_sink_input *direct_on_input,
 650         int *ret) {
 651
 652     record_stream *s;
 653     pa_source_output *source_output = NULL;
 654     pa_source_output_new_data data;
 655     char *memblockq_name;
 656
 657     pa_assert(c);
 658     pa_assert(ss);
 659     pa_assert(p);
 660     pa_assert(ret);
 661
 662     pa_source_output_new_data_init(&data);
 663
 664     pa_proplist_update(data.proplist, PA_UPDATE_REPLACE, p);
 665     data.driver = __FILE__;
 666     data.module = c->options->module;
 667     data.client = c->client;
 668     if (source)
 669         pa_source_output_new_data_set_source(&data, source, false);
 670     if (pa_sample_spec_valid(ss))
 671         pa_source_output_new_data_set_sample_spec(&data, ss);
 672     if (pa_channel_map_valid(map))
 673         pa_source_output_new_data_set_channel_map(&data, map);
 674     if (formats)
 675         pa_source_output_new_data_set_formats(&data, formats);
 676     data.direct_on_input = direct_on_input;
 677     if (volume) {
 678         pa_source_output_new_data_set_volume(&data, volume);
 679         data.volume_is_absolute = !relative_volume;
 680         data.save_volume = false;
 681     }
 682     if (muted_set) {
 683         pa_source_output_new_data_set_muted(&data, muted);
 684         data.save_muted = false;
 685     }
 686     if (peak_detect)
 687         data.resample_method = PA_RESAMPLER_PEAKS;
 688     data.flags = flags;
 689
 690     *ret = -pa_source_output_new(&source_output, c->protocol->core, &data);
 691
 692     pa_source_output_new_data_done(&data);
 693
 694     if (!source_output)
 695         return NULL;
 696
 697     s = pa_msgobject_new(record_stream);
 698     s->parent.parent.free = record_stream_free;
 699     s->parent.process_msg = record_stream_process_msg;
 700     s->connection = c;
 701     s->source_output = source_output;
 702     s->buffer_attr_req = *attr;
 703     s->adjust_latency = adjust_latency;
 704     s->early_requests = early_requests;
 705     pa_atomic_store(&s->on_the_fly, 0);
 706
 707     s->source_output->parent.process_msg = source_output_process_msg;
 708     s->source_output->push = source_output_push_cb;
 709     s->source_output->kill = source_output_kill_cb;
 710     s->source_output->get_latency = source_output_get_latency_cb;
 711     s->source_output->moving = source_output_moving_cb;
 712     s->source_output->suspend = source_output_suspend_cb;
 713     s->source_output->send_event = source_output_send_event_cb;
 714     s->source_output->userdata = s;
 715
 716     fix_record_buffer_attr_pre(s);
 717
 718     memblockq_name = pa_sprintf_malloc("native protocol record stream memblockq [%u]", s->source_output->index);
 719     s->memblockq = pa_memblockq_new(
 720             memblockq_name,
 721             0,
 722             s->buffer_attr.maxlength,
 723             0,
 724             &source_output->sample_spec,
 725             1,
 726             0,
 727             0,
 728             NULL);
 729     pa_xfree(memblockq_name);
 730
 731     pa_memblockq_get_attr(s->memblockq, &s->buffer_attr);
 732     fix_record_buffer_attr_post(s);
 733
 734     *ss = s->source_output->sample_spec;
 735     *map = s->source_output->channel_map;
 736
 737     pa_idxset_put(c->record_streams, s, &s->index);
 738
 739     pa_log_info("Final latency %0.2f ms = %0.2f ms + %0.2f ms",
 740                 ((double) pa_bytes_to_usec(s->buffer_attr.fragsize, &source_output->sample_spec) + (double) s->configured_source_latency) / PA_USEC_PER_MSEC,
 741                 (double) pa_bytes_to_usec(s->buffer_attr.fragsize, &source_output->sample_spec) / PA_USEC_PER_MSEC,
 742                 (double) s->configured_source_latency / PA_USEC_PER_MSEC);
 743
 744     pa_source_output_put(s->source_output);
 745     return s;
 746 }
 747
 748 /* Called from main context */
 749 static void record_stream_send_killed(record_stream *r) {
 750     pa_tagstruct *t;
 751     record_stream_assert_ref(r);
 752
 753     t = pa_tagstruct_new(NULL, 0);
 754     pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_KILLED);
 755     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 756     pa_tagstruct_putu32(t, r->index);
 757     pa_pstream_send_tagstruct(r->connection->pstream, t);
 758 }
 759
 760 /* Called from main context */
 761 static void playback_stream_unlink(playback_stream *s) {
 762     pa_assert(s);
 763
 764     if (!s->connection)
 765         return;
 766
 767     if (s->sink_input) {
 768         pa_sink_input_unlink(s->sink_input);
 769         pa_sink_input_unref(s->sink_input);
 770         s->sink_input = NULL;
 771     }
 772
 773     if (s->drain_request)
 774         pa_pstream_send_error(s->connection->pstream, s->drain_tag, PA_ERR_NOENTITY);
 775
 776     pa_assert_se(pa_idxset_remove_by_data(s->connection->output_streams, s, NULL) == s);
 777     s->connection = NULL;
 778     playback_stream_unref(s);
 779 }
 780
 781 /* Called from main context */
 782 static void playback_stream_free(pa_object* o) {
 783     playback_stream *s = PLAYBACK_STREAM(o);
 784     pa_assert(s);
 785
 786     playback_stream_unlink(s);
 787
 788     pa_memblockq_free(s->memblockq);
 789     pa_xfree(s);
 790 }
 791
 792 /* Called from main context */
 793 static int playback_stream_process_msg(pa_msgobject *o, int code, void*userdata, int64_t offset, pa_memchunk *chunk) {
 794     playback_stream *s = PLAYBACK_STREAM(o);
 795     playback_stream_assert_ref(s);
 796
 797     if (!s->connection)
 798         return -1;
 799
 800     switch (code) {
 801
 802         case PLAYBACK_STREAM_MESSAGE_REQUEST_DATA: {
 803             pa_tagstruct *t;
 804             int l = 0;
 805
 806             for (;;) {
 807                 if ((l = pa_atomic_load(&s->missing)) <= 0)
 808                     return 0;
 809
 810                 if (pa_atomic_cmpxchg(&s->missing, l, 0))
 811                     break;
 812             }
 813
 814             t = pa_tagstruct_new(NULL, 0);
 815             pa_tagstruct_putu32(t, PA_COMMAND_REQUEST);
 816             pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 817             pa_tagstruct_putu32(t, s->index);
 818             pa_tagstruct_putu32(t, (uint32_t) l);
 819             pa_pstream_send_tagstruct(s->connection->pstream, t);
 820
 821 #ifdef PROTOCOL_NATIVE_DEBUG
 822             pa_log("Requesting %lu bytes", (unsigned long) l);
 823 #endif
 824             break;
 825         }
 826
 827         case PLAYBACK_STREAM_MESSAGE_UNDERFLOW: {
 828             pa_tagstruct *t;
 829
 830 #ifdef PROTOCOL_NATIVE_DEBUG
 831             pa_log("signalling underflow");
 832 #endif
 833
 834             /* Report that we're empty */
 835             t = pa_tagstruct_new(NULL, 0);
 836             pa_tagstruct_putu32(t, PA_COMMAND_UNDERFLOW);
 837             pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 838             pa_tagstruct_putu32(t, s->index);
 839             if (s->connection->version >= 23)
 840                 pa_tagstruct_puts64(t, offset);
 841             pa_pstream_send_tagstruct(s->connection->pstream, t);
 842             break;
 843         }
 844
 845         case PLAYBACK_STREAM_MESSAGE_OVERFLOW: {
 846             pa_tagstruct *t;
 847
 848             /* Notify the user we're overflowed*/
 849             t = pa_tagstruct_new(NULL, 0);
 850             pa_tagstruct_putu32(t, PA_COMMAND_OVERFLOW);
 851             pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 852             pa_tagstruct_putu32(t, s->index);
 853             pa_pstream_send_tagstruct(s->connection->pstream, t);
 854             break;
 855         }
 856
 857         case PLAYBACK_STREAM_MESSAGE_STARTED:
 858
 859             if (s->connection->version >= 13) {
 860                 pa_tagstruct *t;
 861
 862                 /* Notify the user we started playback */
 863                 t = pa_tagstruct_new(NULL, 0);
 864                 pa_tagstruct_putu32(t, PA_COMMAND_STARTED);
 865                 pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 866                 pa_tagstruct_putu32(t, s->index);
 867                 pa_pstream_send_tagstruct(s->connection->pstream, t);
 868             }
 869
 870             break;
 871
 872         case PLAYBACK_STREAM_MESSAGE_DRAIN_ACK:
 873             pa_pstream_send_simple_ack(s->connection->pstream, PA_PTR_TO_UINT(userdata));
 874             break;
 875
 876         case PLAYBACK_STREAM_MESSAGE_UPDATE_TLENGTH:
 877
 878             s->buffer_attr.tlength = (uint32_t) offset;
 879
 880             if (s->connection->version >= 15) {
 881                 pa_tagstruct *t;
 882
 883                 t = pa_tagstruct_new(NULL, 0);
 884                 pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_BUFFER_ATTR_CHANGED);
 885                 pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 886                 pa_tagstruct_putu32(t, s->index);
 887                 pa_tagstruct_putu32(t, s->buffer_attr.maxlength);
 888                 pa_tagstruct_putu32(t, s->buffer_attr.tlength);
 889                 pa_tagstruct_putu32(t, s->buffer_attr.prebuf);
 890                 pa_tagstruct_putu32(t, s->buffer_attr.minreq);
 891                 pa_tagstruct_put_usec(t, s->configured_sink_latency);
 892                 pa_pstream_send_tagstruct(s->connection->pstream, t);
 893             }
 894
 895             break;
 896     }
 897
 898     return 0;
 899 }
 900
 901 /* Called from main context */
 902 static void fix_playback_buffer_attr(playback_stream *s) {
 903     size_t frame_size, max_prebuf;
 904     pa_usec_t orig_tlength_usec, tlength_usec, orig_minreq_usec, minreq_usec, sink_usec;
 905
 906     pa_assert(s);
 907
 908 #ifdef PROTOCOL_NATIVE_DEBUG
 909     pa_log("Client requested: maxlength=%li bytes tlength=%li bytes minreq=%li bytes prebuf=%li bytes",
 910            (long) s->buffer_attr_req.maxlength,
 911            (long) s->buffer_attr_req.tlength,
 912            (long) s->buffer_attr_req.minreq,
 913            (long) s->buffer_attr_req.prebuf);
 914
 915     pa_log("Client requested: maxlength=%lu ms tlength=%lu ms minreq=%lu ms prebuf=%lu ms",
 916            (unsigned long) (pa_bytes_to_usec(s->buffer_attr_req.maxlength, &s->sink_input->sample_spec) / PA_USEC_PER_MSEC),
 917            (unsigned long) (pa_bytes_to_usec(s->buffer_attr_req.tlength, &s->sink_input->sample_spec) / PA_USEC_PER_MSEC),
 918            (unsigned long) (pa_bytes_to_usec(s->buffer_attr_req.minreq, &s->sink_input->sample_spec) / PA_USEC_PER_MSEC),
 919            (unsigned long) (pa_bytes_to_usec(s->buffer_attr_req.prebuf, &s->sink_input->sample_spec) / PA_USEC_PER_MSEC));
 920 #endif
 921
 922     /* This function will be called from the main thread, before as
 923      * well as after the sink input has been activated using
 924      * pa_sink_input_put()! That means it may not touch any
 925      * ->thread_info data, such as the memblockq! */
 926
 927     frame_size = pa_frame_size(&s->sink_input->sample_spec);
 928     s->buffer_attr = s->buffer_attr_req;
 929
 930     if (s->buffer_attr.maxlength == (uint32_t) -1 || s->buffer_attr.maxlength > MAX_MEMBLOCKQ_LENGTH)
 931         s->buffer_attr.maxlength = MAX_MEMBLOCKQ_LENGTH;
 932     if (s->buffer_attr.maxlength <= 0)
 933         s->buffer_attr.maxlength = (uint32_t) frame_size;
 934
 935     if (s->buffer_attr.tlength == (uint32_t) -1)
 936         s->buffer_attr.tlength = (uint32_t) pa_usec_to_bytes_round_up(DEFAULT_TLENGTH_MSEC*PA_USEC_PER_MSEC, &s->sink_input->sample_spec);
 937     if (s->buffer_attr.tlength <= 0)
 938         s->buffer_attr.tlength = (uint32_t) frame_size;
 939     if (s->buffer_attr.tlength > s->buffer_attr.maxlength)
 940         s->buffer_attr.tlength = s->buffer_attr.maxlength;
 941
 942     if (s->buffer_attr.minreq == (uint32_t) -1) {
 943         uint32_t process = (uint32_t) pa_usec_to_bytes_round_up(DEFAULT_PROCESS_MSEC*PA_USEC_PER_MSEC, &s->sink_input->sample_spec);
 944         /* With low-latency, tlength/4 gives a decent default in all of traditional, adjust latency and early request modes. */
 945         uint32_t m = s->buffer_attr.tlength / 4;
 946         if (frame_size)
 947             m -= m % frame_size;
 948         s->buffer_attr.minreq = PA_MIN(process, m);
 949     }
 950     if (s->buffer_attr.minreq <= 0)
 951         s->buffer_attr.minreq = (uint32_t) frame_size;
 952
 953     if (s->buffer_attr.tlength < s->buffer_attr.minreq+frame_size)
 954         s->buffer_attr.tlength = s->buffer_attr.minreq+(uint32_t) frame_size;
 955
 956     orig_tlength_usec = tlength_usec = pa_bytes_to_usec(s->buffer_attr.tlength, &s->sink_input->sample_spec);
 957     orig_minreq_usec = minreq_usec = pa_bytes_to_usec(s->buffer_attr.minreq, &s->sink_input->sample_spec);
 958
 959     pa_log_info("Requested tlength=%0.2f ms, minreq=%0.2f ms",
 960                 (double) tlength_usec / PA_USEC_PER_MSEC,
 961                 (double) minreq_usec / PA_USEC_PER_MSEC);
 962
 963     if (s->early_requests) {
 964
 965         /* In early request mode we need to emulate the classic
 966          * fragment-based playback model. We do this setting the sink
 967          * latency to the fragment size. */
 968
 969         sink_usec = minreq_usec;
 970         pa_log_debug("Early requests mode enabled, configuring sink latency to minreq.");
 971
 972     } else if (s->adjust_latency) {
 973
 974         /* So, the user asked us to adjust the latency of the stream
 975          * buffer according to the what the sink can provide. The
 976          * tlength passed in shall be the overall latency. Roughly
 977          * half the latency will be spent on the hw buffer, the other
 978          * half of it in the async buffer queue we maintain for each
 979          * client. In between we'll have a safety space of size
 980          * 2*minreq. Why the 2*minreq? When the hw buffer is completely
 981          * empty and needs to be filled, then our buffer must have
 982          * enough data to fulfill this request immediately and thus
 983          * have at least the same tlength as the size of the hw
 984          * buffer. It additionally needs space for 2 times minreq
 985          * because if the buffer ran empty and a partial fillup
 986          * happens immediately on the next iteration we need to be
 987          * able to fulfill it and give the application also minreq
 988          * time to fill it up again for the next request Makes 2 times
 989          * minreq in plus.. */
 990
 991         if (tlength_usec > minreq_usec*2)
 992             sink_usec = (tlength_usec - minreq_usec*2)/2;
 993         else
 994             sink_usec = 0;
 995
 996         pa_log_debug("Adjust latency mode enabled, configuring sink latency to half of overall latency.");
 997
 998     } else {
 999
1000         /* Ok, the user didn't ask us to adjust the latency, but we
1001          * still need to make sure that the parameters from the user
1002          * do make sense. */
1003
1004         if (tlength_usec > minreq_usec*2)
1005             sink_usec = (tlength_usec - minreq_usec*2);
1006         else
1007             sink_usec = 0;
1008
1009         pa_log_debug("Traditional mode enabled, modifying sink usec only for compat with minreq.");
1010     }
1011
1012     s->configured_sink_latency = pa_sink_input_set_requested_latency(s->sink_input, sink_usec);
1013
1014     if (s->early_requests) {
1015
1016         /* Ok, we didn't necessarily get what we were asking for, so
1017          * let's tell the user */
1018
1019         minreq_usec = s->configured_sink_latency;
1020
1021     } else if (s->adjust_latency) {
1022
1023         /* Ok, we didn't necessarily get what we were asking for, so
1024          * let's subtract from what we asked for for the remaining
1025          * buffer space */
1026
1027         if (tlength_usec >= s->configured_sink_latency)
1028             tlength_usec -= s->configured_sink_latency;
1029     }
1030
1031     pa_log_debug("Requested latency=%0.2f ms, Received latency=%0.2f ms",
1032                  (double) sink_usec / PA_USEC_PER_MSEC,
1033                  (double) s->configured_sink_latency / PA_USEC_PER_MSEC);
1034
1035     /* FIXME: This is actually larger than necessary, since not all of
1036      * the sink latency is actually rewritable. */
1037     if (tlength_usec < s->configured_sink_latency + 2*minreq_usec)
1038         tlength_usec = s->configured_sink_latency + 2*minreq_usec;
1039
1040     if (pa_usec_to_bytes_round_up(orig_tlength_usec, &s->sink_input->sample_spec) !=
1041         pa_usec_to_bytes_round_up(tlength_usec, &s->sink_input->sample_spec))
1042         s->buffer_attr.tlength = (uint32_t) pa_usec_to_bytes_round_up(tlength_usec, &s->sink_input->sample_spec);
1043
1044     if (pa_usec_to_bytes(orig_minreq_usec, &s->sink_input->sample_spec) !=
1045         pa_usec_to_bytes(minreq_usec, &s->sink_input->sample_spec))
1046         s->buffer_attr.minreq = (uint32_t) pa_usec_to_bytes(minreq_usec, &s->sink_input->sample_spec);
1047
1048     if (s->buffer_attr.minreq <= 0) {
1049         s->buffer_attr.minreq = (uint32_t) frame_size;
1050         s->buffer_attr.tlength += (uint32_t) frame_size*2;
1051     }
1052
1053     if (s->buffer_attr.tlength <= s->buffer_attr.minreq)
1054         s->buffer_attr.tlength = s->buffer_attr.minreq*2 + (uint32_t) frame_size;
1055
1056     max_prebuf = s->buffer_attr.tlength + (uint32_t)frame_size - s->buffer_attr.minreq;
1057
1058     if (s->buffer_attr.prebuf == (uint32_t) -1 ||
1059         s->buffer_attr.prebuf > max_prebuf)
1060         s->buffer_attr.prebuf = max_prebuf;
1061
1062 #ifdef PROTOCOL_NATIVE_DEBUG
1063     pa_log("Client accepted: maxlength=%lu ms tlength=%lu ms minreq=%lu ms prebuf=%lu ms",
1064            (unsigned long) (pa_bytes_to_usec(s->buffer_attr.maxlength, &s->sink_input->sample_spec) / PA_USEC_PER_MSEC),
1065            (unsigned long) (pa_bytes_to_usec(s->buffer_attr.tlength, &s->sink_input->sample_spec) / PA_USEC_PER_MSEC),
1066            (unsigned long) (pa_bytes_to_usec(s->buffer_attr.minreq, &s->sink_input->sample_spec) / PA_USEC_PER_MSEC),
1067            (unsigned long) (pa_bytes_to_usec(s->buffer_attr.prebuf, &s->sink_input->sample_spec) / PA_USEC_PER_MSEC));
1068 #endif
1069 }
1070
1071 /* Called from main context */
1072 static playback_stream* playback_stream_new(
1073         pa_native_connection *c,
1074         pa_sink *sink,
1075         pa_sample_spec *ss,
1076         pa_channel_map *map,
1077         pa_idxset *formats,
1078         pa_buffer_attr *a,
1079         pa_cvolume *volume,
1080         bool muted,
1081         bool muted_set,
1082         pa_sink_input_flags_t flags,
1083         pa_proplist *p,
1084         bool adjust_latency,
1085         bool early_requests,
1086         bool relative_volume,
1087         uint32_t syncid,
1088         uint32_t *missing,
1089         int *ret) {
1090
1091     /* Note: This function takes ownership of the 'formats' param, so we need
1092      * to take extra care to not leak it */
1093
1094     playback_stream *ssync;
1095     playback_stream *s = NULL;
1096     pa_sink_input *sink_input = NULL;
1097     pa_memchunk silence;
1098     uint32_t idx;
1099     int64_t start_index;
1100     pa_sink_input_new_data data;
1101     char *memblockq_name;
1102
1103     pa_assert(c);
1104     pa_assert(ss);
1105     pa_assert(missing);
1106     pa_assert(p);
1107     pa_assert(ret);
1108
1109     /* Find syncid group */
1110     PA_IDXSET_FOREACH(ssync, c->output_streams, idx) {
1111
1112         if (!playback_stream_isinstance(ssync))
1113             continue;
1114
1115         if (ssync->syncid == syncid)
1116             break;
1117     }
1118
1119     /* Synced streams must connect to the same sink */
1120     if (ssync) {
1121
1122         if (!sink)
1123             sink = ssync->sink_input->sink;
1124         else if (sink != ssync->sink_input->sink) {
1125             *ret = PA_ERR_INVALID;
1126             goto out;
1127         }
1128     }
1129
1130     pa_sink_input_new_data_init(&data);
1131
1132     pa_proplist_update(data.proplist, PA_UPDATE_REPLACE, p);
1133     data.driver = __FILE__;
1134     data.module = c->options->module;
1135     data.client = c->client;
1136     if (sink)
1137         pa_sink_input_new_data_set_sink(&data, sink, false);
1138     if (pa_sample_spec_valid(ss))
1139         pa_sink_input_new_data_set_sample_spec(&data, ss);
1140     if (pa_channel_map_valid(map))
1141         pa_sink_input_new_data_set_channel_map(&data, map);
1142     if (formats) {
1143         pa_sink_input_new_data_set_formats(&data, formats);
1144         /* Ownership transferred to new_data, so we don't free it ourselves */
1145         formats = NULL;
1146     }
1147     if (volume) {
1148         pa_sink_input_new_data_set_volume(&data, volume);
1149         data.volume_is_absolute = !relative_volume;
1150         data.save_volume = false;
1151     }
1152     if (muted_set) {
1153         pa_sink_input_new_data_set_muted(&data, muted);
1154         data.save_muted = false;
1155     }
1156     data.sync_base = ssync ? ssync->sink_input : NULL;
1157     data.flags = flags;
1158
1159     *ret = -pa_sink_input_new(&sink_input, c->protocol->core, &data);
1160
1161     pa_sink_input_new_data_done(&data);
1162
1163     if (!sink_input)
1164         goto out;
1165
1166     s = pa_msgobject_new(playback_stream);
1167     s->parent.parent.parent.free = playback_stream_free;
1168     s->parent.parent.process_msg = playback_stream_process_msg;
1169     s->connection = c;
1170     s->syncid = syncid;
1171     s->sink_input = sink_input;
1172     s->is_underrun = true;
1173     s->drain_request = false;
1174     pa_atomic_store(&s->missing, 0);
1175     s->buffer_attr_req = *a;
1176     s->adjust_latency = adjust_latency;
1177     s->early_requests = early_requests;
1178     pa_atomic_store(&s->seek_or_post_in_queue, 0);
1179     s->seek_windex = -1;
1180
1181     s->sink_input->parent.process_msg = sink_input_process_msg;
1182     s->sink_input->pop = sink_input_pop_cb;
1183     s->sink_input->process_underrun = sink_input_process_underrun_cb;
1184     s->sink_input->process_rewind = sink_input_process_rewind_cb;
1185     s->sink_input->update_max_rewind = sink_input_update_max_rewind_cb;
1186     s->sink_input->update_max_request = sink_input_update_max_request_cb;
1187     s->sink_input->kill = sink_input_kill_cb;
1188     s->sink_input->moving = sink_input_moving_cb;
1189     s->sink_input->suspend = sink_input_suspend_cb;
1190     s->sink_input->send_event = sink_input_send_event_cb;
1191     s->sink_input->userdata = s;
1192
1193     start_index = ssync ? pa_memblockq_get_read_index(ssync->memblockq) : 0;
1194
1195     fix_playback_buffer_attr(s);
1196
1197     pa_sink_input_get_silence(sink_input, &silence);
1198     memblockq_name = pa_sprintf_malloc("native protocol playback stream memblockq [%u]", s->sink_input->index);
1199     s->memblockq = pa_memblockq_new(
1200             memblockq_name,
1201             start_index,
1202             s->buffer_attr.maxlength,
1203             s->buffer_attr.tlength,
1204             &sink_input->sample_spec,
1205             s->buffer_attr.prebuf,
1206             s->buffer_attr.minreq,
1207             0,
1208             &silence);
1209     pa_xfree(memblockq_name);
1210     pa_memblock_unref(silence.memblock);
1211
1212     pa_memblockq_get_attr(s->memblockq, &s->buffer_attr);
1213
1214     *missing = (uint32_t) pa_memblockq_pop_missing(s->memblockq);
1215
1216 #ifdef PROTOCOL_NATIVE_DEBUG
1217     pa_log("missing original: %li", (long int) *missing);
1218 #endif
1219
1220     *ss = s->sink_input->sample_spec;
1221     *map = s->sink_input->channel_map;
1222
1223     pa_idxset_put(c->output_streams, s, &s->index);
1224
1225     pa_log_info("Final latency %0.2f ms = %0.2f ms + 2*%0.2f ms + %0.2f ms",
1226                 ((double) pa_bytes_to_usec(s->buffer_attr.tlength, &sink_input->sample_spec) + (double) s->configured_sink_latency) / PA_USEC_PER_MSEC,
1227                 (double) pa_bytes_to_usec(s->buffer_attr.tlength-s->buffer_attr.minreq*2, &sink_input->sample_spec) / PA_USEC_PER_MSEC,
1228                 (double) pa_bytes_to_usec(s->buffer_attr.minreq, &sink_input->sample_spec) / PA_USEC_PER_MSEC,
1229                 (double) s->configured_sink_latency / PA_USEC_PER_MSEC);
1230
1231     pa_sink_input_put(s->sink_input);
1232
1233 out:
1234     if (formats)
1235         pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
1236
1237     return s;
1238 }
1239
1240 /* Called from IO context */
1241 static void playback_stream_request_bytes(playback_stream *s) {
1242     size_t m, minreq;
1243     int previous_missing;
1244
1245     playback_stream_assert_ref(s);
1246
1247     m = pa_memblockq_pop_missing(s->memblockq);
1248
1249     /* pa_log("request_bytes(%lu) (tlength=%lu minreq=%lu length=%lu really missing=%lli)", */
1250     /*        (unsigned long) m, */
1251     /*        pa_memblockq_get_tlength(s->memblockq), */
1252     /*        pa_memblockq_get_minreq(s->memblockq), */
1253     /*        pa_memblockq_get_length(s->memblockq), */
1254     /*        (long long) pa_memblockq_get_tlength(s->memblockq) - (long long) pa_memblockq_get_length(s->memblockq)); */
1255
1256     if (m <= 0)
1257         return;
1258
1259 #ifdef PROTOCOL_NATIVE_DEBUG
1260     pa_log("request_bytes(%lu)", (unsigned long) m);
1261 #endif
1262
1263     previous_missing = pa_atomic_add(&s->missing, (int) m);
1264     minreq = pa_memblockq_get_minreq(s->memblockq);
1265
1266     if (pa_memblockq_prebuf_active(s->memblockq) ||
1267         (previous_missing < (int) minreq && previous_missing + (int) m >= (int) minreq))
1268         pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_REQUEST_DATA, NULL, 0, NULL, NULL);
1269 }
1270
1271 /* Called from main context */
1272 static void playback_stream_send_killed(playback_stream *p) {
1273     pa_tagstruct *t;
1274     playback_stream_assert_ref(p);
1275
1276     t = pa_tagstruct_new(NULL, 0);
1277     pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_KILLED);
1278     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1279     pa_tagstruct_putu32(t, p->index);
1280     pa_pstream_send_tagstruct(p->connection->pstream, t);
1281 }
1282
1283 /* Called from main context */
1284 static int native_connection_process_msg(pa_msgobject *o, int code, void*userdata, int64_t offset, pa_memchunk *chunk) {
1285     pa_native_connection *c = PA_NATIVE_CONNECTION(o);
1286     pa_native_connection_assert_ref(c);
1287
1288     if (!c->protocol)
1289         return -1;
1290
1291     switch (code) {
1292
1293         case CONNECTION_MESSAGE_REVOKE:
1294             pa_pstream_send_revoke(c->pstream, PA_PTR_TO_UINT(userdata));
1295             break;
1296
1297         case CONNECTION_MESSAGE_RELEASE:
1298             pa_pstream_send_release(c->pstream, PA_PTR_TO_UINT(userdata));
1299             break;
1300     }
1301
1302     return 0;
1303 }
1304
1305 /* Called from main context */
1306 static void native_connection_unlink(pa_native_connection *c) {
1307     record_stream *r;
1308     output_stream *o;
1309
1310     pa_assert(c);
1311
1312     if (!c->protocol)
1313         return;
1314
1315     pa_hook_fire(&c->protocol->hooks[PA_NATIVE_HOOK_CONNECTION_UNLINK], c);
1316
1317     if (c->options)
1318         pa_native_options_unref(c->options);
1319
1320     while ((r = pa_idxset_first(c->record_streams, NULL)))
1321         record_stream_unlink(r);
1322
1323     while ((o = pa_idxset_first(c->output_streams, NULL)))
1324         if (playback_stream_isinstance(o))
1325             playback_stream_unlink(PLAYBACK_STREAM(o));
1326         else
1327             upload_stream_unlink(UPLOAD_STREAM(o));
1328
1329     if (c->subscription)
1330         pa_subscription_free(c->subscription);
1331
1332     if (c->pstream)
1333         pa_pstream_unlink(c->pstream);
1334
1335     if (c->auth_timeout_event) {
1336         c->protocol->core->mainloop->time_free(c->auth_timeout_event);
1337         c->auth_timeout_event = NULL;
1338     }
1339
1340     pa_assert_se(pa_idxset_remove_by_data(c->protocol->connections, c, NULL) == c);
1341     c->protocol = NULL;
1342     pa_native_connection_unref(c);
1343 }
1344
1345 /* Called from main context */
1346 static void native_connection_free(pa_object *o) {
1347     pa_native_connection *c = PA_NATIVE_CONNECTION(o);
1348
1349     pa_assert(c);
1350
1351     native_connection_unlink(c);
1352
1353     pa_idxset_free(c->record_streams, NULL);
1354     pa_idxset_free(c->output_streams, NULL);
1355
1356     pa_pdispatch_unref(c->pdispatch);
1357     pa_pstream_unref(c->pstream);
1358     pa_client_free(c->client);
1359
1360     pa_xfree(c);
1361 }
1362
1363 /* Called from main context */
1364 static void native_connection_send_memblock(pa_native_connection *c) {
1365     uint32_t start;
1366     record_stream *r;
1367
1368     start = PA_IDXSET_INVALID;
1369     for (;;) {
1370         pa_memchunk chunk;
1371
1372         if (!(r = RECORD_STREAM(pa_idxset_rrobin(c->record_streams, &c->rrobin_index))))
1373             return;
1374
1375         if (start == PA_IDXSET_INVALID)
1376             start = c->rrobin_index;
1377         else if (start == c->rrobin_index)
1378             return;
1379
1380         if (pa_memblockq_peek(r->memblockq, &chunk) >= 0) {
1381             pa_memchunk schunk = chunk;
1382
1383             if (schunk.length > r->buffer_attr.fragsize)
1384                 schunk.length = r->buffer_attr.fragsize;
1385
1386             pa_pstream_send_memblock(c->pstream, r->index, 0, PA_SEEK_RELATIVE, &schunk);
1387
1388             pa_memblockq_drop(r->memblockq, schunk.length);
1389             pa_memblock_unref(schunk.memblock);
1390
1391             return;
1392         }
1393     }
1394 }
1395
1396 /*** sink input callbacks ***/
1397
1398 /* Called from thread context */
1399 static void handle_seek(playback_stream *s, int64_t indexw) {
1400     playback_stream_assert_ref(s);
1401
1402 /*     pa_log("handle_seek: %llu -- %i", (unsigned long long) s->sink_input->thread_info.underrun_for, pa_memblockq_is_readable(s->memblockq)); */
1403
1404     if (s->sink_input->thread_info.underrun_for > 0) {
1405
1406 /*         pa_log("%lu vs. %lu", (unsigned long) pa_memblockq_get_length(s->memblockq), (unsigned long) pa_memblockq_get_prebuf(s->memblockq)); */
1407
1408         if (pa_memblockq_is_readable(s->memblockq)) {
1409
1410             /* We just ended an underrun, let's ask the sink
1411              * for a complete rewind rewrite */
1412
1413             pa_log_debug("Requesting rewind due to end of underrun.");
1414             pa_sink_input_request_rewind(s->sink_input,
1415                                          (size_t) (s->sink_input->thread_info.underrun_for == (uint64_t) -1 ? 0 :
1416                                                    s->sink_input->thread_info.underrun_for),
1417                                          false, true, false);
1418         }
1419
1420     } else {
1421         int64_t indexr;
1422
1423         indexr = pa_memblockq_get_read_index(s->memblockq);
1424
1425         if (indexw < indexr) {
1426             /* OK, the sink already asked for this data, so
1427              * let's have it ask us again */
1428
1429             pa_log_debug("Requesting rewind due to rewrite.");
1430             pa_sink_input_request_rewind(s->sink_input, (size_t) (indexr - indexw), true, false, false);
1431         }
1432     }
1433
1434     playback_stream_request_bytes(s);
1435 }
1436
1437 static void flush_write_no_account(pa_memblockq *q) {
1438     pa_memblockq_flush_write(q, false);
1439 }
1440
1441 /* Called from thread context */
1442 static int sink_input_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
1443     pa_sink_input *i = PA_SINK_INPUT(o);
1444     playback_stream *s;
1445
1446     pa_sink_input_assert_ref(i);
1447     s = PLAYBACK_STREAM(i->userdata);
1448     playback_stream_assert_ref(s);
1449
1450     switch (code) {
1451
1452         case SINK_INPUT_MESSAGE_SEEK:
1453         case SINK_INPUT_MESSAGE_POST_DATA: {
1454             int64_t windex = pa_memblockq_get_write_index(s->memblockq);
1455
1456             if (code == SINK_INPUT_MESSAGE_SEEK) {
1457                 /* The client side is incapable of accounting correctly
1458                  * for seeks of a type != PA_SEEK_RELATIVE. We need to be
1459                  * able to deal with that. */
1460
1461                 pa_memblockq_seek(s->memblockq, offset, PA_PTR_TO_UINT(userdata), PA_PTR_TO_UINT(userdata) == PA_SEEK_RELATIVE);
1462                 windex = PA_MIN(windex, pa_memblockq_get_write_index(s->memblockq));
1463             }
1464
1465             if (chunk && pa_memblockq_push_align(s->memblockq, chunk) < 0) {
1466                 if (pa_log_ratelimit(PA_LOG_WARN))
1467                     pa_log_warn("Failed to push data into queue");
1468                 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_OVERFLOW, NULL, 0, NULL, NULL);
1469                 pa_memblockq_seek(s->memblockq, (int64_t) chunk->length, PA_SEEK_RELATIVE, true);
1470             }
1471
1472             /* If more data is in queue, we rewind later instead. */
1473             if (s->seek_windex != -1)
1474                 windex = PA_MIN(windex, s->seek_windex);
1475             if (pa_atomic_dec(&s->seek_or_post_in_queue) > 1)
1476                 s->seek_windex = windex;
1477             else {
1478                 s->seek_windex = -1;
1479                 handle_seek(s, windex);
1480             }
1481             return 0;
1482         }
1483
1484         case SINK_INPUT_MESSAGE_DRAIN:
1485         case SINK_INPUT_MESSAGE_FLUSH:
1486         case SINK_INPUT_MESSAGE_PREBUF_FORCE:
1487         case SINK_INPUT_MESSAGE_TRIGGER: {
1488
1489             int64_t windex;
1490             pa_sink_input *isync;
1491             void (*func)(pa_memblockq *bq);
1492
1493             switch (code) {
1494                 case SINK_INPUT_MESSAGE_FLUSH:
1495                     func = flush_write_no_account;
1496                     break;
1497
1498                 case SINK_INPUT_MESSAGE_PREBUF_FORCE:
1499                     func = pa_memblockq_prebuf_force;
1500                     break;
1501
1502                 case SINK_INPUT_MESSAGE_DRAIN:
1503                 case SINK_INPUT_MESSAGE_TRIGGER:
1504                     func = pa_memblockq_prebuf_disable;
1505                     break;
1506
1507                 default:
1508                     pa_assert_not_reached();
1509             }
1510
1511             windex = pa_memblockq_get_write_index(s->memblockq);
1512             func(s->memblockq);
1513             handle_seek(s, windex);
1514
1515             /* Do the same for all other members in the sync group */
1516             for (isync = i->sync_prev; isync; isync = isync->sync_prev) {
1517                 playback_stream *ssync = PLAYBACK_STREAM(isync->userdata);
1518                 windex = pa_memblockq_get_write_index(ssync->memblockq);
1519                 func(ssync->memblockq);
1520                 handle_seek(ssync, windex);
1521             }
1522
1523             for (isync = i->sync_next; isync; isync = isync->sync_next) {
1524                 playback_stream *ssync = PLAYBACK_STREAM(isync->userdata);
1525                 windex = pa_memblockq_get_write_index(ssync->memblockq);
1526                 func(ssync->memblockq);
1527                 handle_seek(ssync, windex);
1528             }
1529
1530             if (code == SINK_INPUT_MESSAGE_DRAIN) {
1531                 if (!pa_memblockq_is_readable(s->memblockq))
1532                     pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_DRAIN_ACK, userdata, 0, NULL, NULL);
1533                 else {
1534                     s->drain_tag = PA_PTR_TO_UINT(userdata);
1535                     s->drain_request = true;
1536                 }
1537             }
1538
1539             return 0;
1540         }
1541
1542         case SINK_INPUT_MESSAGE_UPDATE_LATENCY:
1543             /* Atomically get a snapshot of all timing parameters... */
1544             s->read_index = pa_memblockq_get_read_index(s->memblockq);
1545             s->write_index = pa_memblockq_get_write_index(s->memblockq);
1546             s->render_memblockq_length = pa_memblockq_get_length(s->sink_input->thread_info.render_memblockq);
1547             s->current_sink_latency = pa_sink_get_latency_within_thread(s->sink_input->sink);
1548             s->underrun_for = s->sink_input->thread_info.underrun_for;
1549             s->playing_for = s->sink_input->thread_info.playing_for;
1550
1551             return 0;
1552
1553         case PA_SINK_INPUT_MESSAGE_SET_STATE: {
1554             int64_t windex;
1555
1556             windex = pa_memblockq_get_write_index(s->memblockq);
1557
1558             /* We enable prebuffering so that after CORKED -> RUNNING
1559              * transitions we don't have trouble with underruns in case the
1560              * buffer has too little data. This must not be done when draining
1561              * has been requested, however, otherwise the buffered audio would
1562              * never play. */
1563             if (!s->drain_request)
1564                 pa_memblockq_prebuf_force(s->memblockq);
1565
1566             handle_seek(s, windex);
1567
1568             /* Fall through to the default handler */
1569             break;
1570         }
1571
1572         case PA_SINK_INPUT_MESSAGE_GET_LATENCY: {
1573             pa_usec_t *r = userdata;
1574
1575             *r = pa_bytes_to_usec(pa_memblockq_get_length(s->memblockq), &i->sample_spec);
1576
1577             /* Fall through, the default handler will add in the extra
1578              * latency added by the resampler */
1579             break;
1580         }
1581
1582         case SINK_INPUT_MESSAGE_UPDATE_BUFFER_ATTR: {
1583             pa_memblockq_apply_attr(s->memblockq, &s->buffer_attr);
1584             pa_memblockq_get_attr(s->memblockq, &s->buffer_attr);
1585             return 0;
1586         }
1587     }
1588
1589     return pa_sink_input_process_msg(o, code, userdata, offset, chunk);
1590 }
1591
1592 static bool handle_input_underrun(playback_stream *s, bool force) {
1593     bool send_drain;
1594
1595     if (pa_memblockq_is_readable(s->memblockq))
1596         return false;
1597
1598     if (!s->is_underrun)
1599         pa_log_debug("%s %s of '%s'", force ? "Actual" : "Implicit",
1600             s->drain_request ? "drain" : "underrun", pa_strnull(pa_proplist_gets(s->sink_input->proplist, PA_PROP_MEDIA_NAME)));
1601
1602     send_drain = s->drain_request && (force || pa_sink_input_safe_to_remove(s->sink_input));
1603
1604     if (send_drain) {
1605          s->drain_request = false;
1606          pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_DRAIN_ACK, PA_UINT_TO_PTR(s->drain_tag), 0, NULL, NULL);
1607          pa_log_debug("Drain acknowledged of '%s'", pa_strnull(pa_proplist_gets(s->sink_input->proplist, PA_PROP_MEDIA_NAME)));
1608     } else if (!s->is_underrun) {
1609          pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_UNDERFLOW, NULL, pa_memblockq_get_read_index(s->memblockq), NULL, NULL);
1610     }
1611     s->is_underrun = true;
1612     playback_stream_request_bytes(s);
1613     return true;
1614 }
1615
1616 /* Called from thread context */
1617 static bool sink_input_process_underrun_cb(pa_sink_input *i) {
1618     playback_stream *s;
1619
1620     pa_sink_input_assert_ref(i);
1621     s = PLAYBACK_STREAM(i->userdata);
1622     playback_stream_assert_ref(s);
1623
1624     return handle_input_underrun(s, true);
1625 }
1626
1627 /* Called from thread context */
1628 static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk) {
1629     playback_stream *s;
1630
1631     pa_sink_input_assert_ref(i);
1632     s = PLAYBACK_STREAM(i->userdata);
1633     playback_stream_assert_ref(s);
1634     pa_assert(chunk);
1635
1636 #ifdef PROTOCOL_NATIVE_DEBUG
1637     pa_log("%s, pop(): %lu", pa_proplist_gets(i->proplist, PA_PROP_MEDIA_NAME), (unsigned long) pa_memblockq_get_length(s->memblockq));
1638 #endif
1639
1640     if (!handle_input_underrun(s, false))
1641         s->is_underrun = false;
1642
1643     /* This call will not fail with prebuf=0, hence we check for
1644        underrun explicitly in handle_input_underrun */
1645     if (pa_memblockq_peek(s->memblockq, chunk) < 0)
1646         return -1;
1647
1648     chunk->length = PA_MIN(nbytes, chunk->length);
1649
1650     if (i->thread_info.underrun_for > 0)
1651         pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_STARTED, NULL, 0, NULL, NULL);
1652
1653     pa_memblockq_drop(s->memblockq, chunk->length);
1654     playback_stream_request_bytes(s);
1655
1656     return 0;
1657 }
1658
1659 /* Called from thread context */
1660 static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes) {
1661     playback_stream *s;
1662
1663     pa_sink_input_assert_ref(i);
1664     s = PLAYBACK_STREAM(i->userdata);
1665     playback_stream_assert_ref(s);
1666
1667     /* If we are in an underrun, then we don't rewind */
1668     if (i->thread_info.underrun_for > 0)
1669         return;
1670
1671     pa_memblockq_rewind(s->memblockq, nbytes);
1672 }
1673
1674 /* Called from thread context */
1675 static void sink_input_update_max_rewind_cb(pa_sink_input *i, size_t nbytes) {
1676     playback_stream *s;
1677
1678     pa_sink_input_assert_ref(i);
1679     s = PLAYBACK_STREAM(i->userdata);
1680     playback_stream_assert_ref(s);
1681
1682     pa_memblockq_set_maxrewind(s->memblockq, nbytes);
1683 }
1684
1685 /* Called from thread context */
1686 static void sink_input_update_max_request_cb(pa_sink_input *i, size_t nbytes) {
1687     playback_stream *s;
1688     size_t new_tlength, old_tlength;
1689
1690     pa_sink_input_assert_ref(i);
1691     s = PLAYBACK_STREAM(i->userdata);
1692     playback_stream_assert_ref(s);
1693
1694     old_tlength = pa_memblockq_get_tlength(s->memblockq);
1695     new_tlength = nbytes+2*pa_memblockq_get_minreq(s->memblockq);
1696
1697     if (old_tlength < new_tlength) {
1698         pa_log_debug("max_request changed, trying to update from %zu to %zu.", old_tlength, new_tlength);
1699         pa_memblockq_set_tlength(s->memblockq, new_tlength);
1700         new_tlength = pa_memblockq_get_tlength(s->memblockq);
1701
1702         if (new_tlength == old_tlength)
1703             pa_log_debug("Failed to increase tlength");
1704         else {
1705             pa_log_debug("Notifying client about increased tlength");
1706             pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_UPDATE_TLENGTH, NULL, pa_memblockq_get_tlength(s->memblockq), NULL, NULL);
1707         }
1708     }
1709 }
1710
1711 /* Called from main context */
1712 static void sink_input_kill_cb(pa_sink_input *i) {
1713     playback_stream *s;
1714
1715     pa_sink_input_assert_ref(i);
1716     s = PLAYBACK_STREAM(i->userdata);
1717     playback_stream_assert_ref(s);
1718
1719     playback_stream_send_killed(s);
1720     playback_stream_unlink(s);
1721 }
1722
1723 /* Called from main context */
1724 static void sink_input_send_event_cb(pa_sink_input *i, const char *event, pa_proplist *pl) {
1725     playback_stream *s;
1726     pa_tagstruct *t;
1727
1728     pa_sink_input_assert_ref(i);
1729     s = PLAYBACK_STREAM(i->userdata);
1730     playback_stream_assert_ref(s);
1731
1732     if (s->connection->version < 15)
1733       return;
1734
1735     t = pa_tagstruct_new(NULL, 0);
1736     pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_EVENT);
1737     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1738     pa_tagstruct_putu32(t, s->index);
1739     pa_tagstruct_puts(t, event);
1740     pa_tagstruct_put_proplist(t, pl);
1741     pa_pstream_send_tagstruct(s->connection->pstream, t);
1742 }
1743
1744 /* Called from main context */
1745 static void sink_input_suspend_cb(pa_sink_input *i, bool suspend) {
1746     playback_stream *s;
1747     pa_tagstruct *t;
1748
1749     pa_sink_input_assert_ref(i);
1750     s = PLAYBACK_STREAM(i->userdata);
1751     playback_stream_assert_ref(s);
1752
1753     if (s->connection->version < 12)
1754       return;
1755
1756     t = pa_tagstruct_new(NULL, 0);
1757     pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_SUSPENDED);
1758     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1759     pa_tagstruct_putu32(t, s->index);
1760     pa_tagstruct_put_boolean(t, suspend);
1761     pa_pstream_send_tagstruct(s->connection->pstream, t);
1762 }
1763
1764 /* Called from main context */
1765 static void sink_input_moving_cb(pa_sink_input *i, pa_sink *dest) {
1766     playback_stream *s;
1767     pa_tagstruct *t;
1768
1769     pa_sink_input_assert_ref(i);
1770     s = PLAYBACK_STREAM(i->userdata);
1771     playback_stream_assert_ref(s);
1772
1773     if (!dest)
1774         return;
1775
1776     fix_playback_buffer_attr(s);
1777     pa_memblockq_apply_attr(s->memblockq, &s->buffer_attr);
1778     pa_memblockq_get_attr(s->memblockq, &s->buffer_attr);
1779
1780     if (s->connection->version < 12)
1781       return;
1782
1783     t = pa_tagstruct_new(NULL, 0);
1784     pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_MOVED);
1785     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1786     pa_tagstruct_putu32(t, s->index);
1787     pa_tagstruct_putu32(t, dest->index);
1788     pa_tagstruct_puts(t, dest->name);
1789     pa_tagstruct_put_boolean(t, pa_sink_get_state(dest) == PA_SINK_SUSPENDED);
1790
1791     if (s->connection->version >= 13) {
1792         pa_tagstruct_putu32(t, s->buffer_attr.maxlength);
1793         pa_tagstruct_putu32(t, s->buffer_attr.tlength);
1794         pa_tagstruct_putu32(t, s->buffer_attr.prebuf);
1795         pa_tagstruct_putu32(t, s->buffer_attr.minreq);
1796         pa_tagstruct_put_usec(t, s->configured_sink_latency);
1797     }
1798
1799     pa_pstream_send_tagstruct(s->connection->pstream, t);
1800 }
1801
1802 /*** source_output callbacks ***/
1803
1804 /* Called from thread context */
1805 static int source_output_process_msg(pa_msgobject *_o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
1806     pa_source_output *o = PA_SOURCE_OUTPUT(_o);
1807     record_stream *s;
1808
1809     pa_source_output_assert_ref(o);
1810     s = RECORD_STREAM(o->userdata);
1811     record_stream_assert_ref(s);
1812
1813     switch (code) {
1814         case SOURCE_OUTPUT_MESSAGE_UPDATE_LATENCY:
1815             /* Atomically get a snapshot of all timing parameters... */
1816             s->current_monitor_latency = o->source->monitor_of ? pa_sink_get_latency_within_thread(o->source->monitor_of) : 0;
1817             s->current_source_latency = pa_source_get_latency_within_thread(o->source);
1818             s->on_the_fly_snapshot = pa_atomic_load(&s->on_the_fly);
1819             return 0;
1820     }
1821
1822     return pa_source_output_process_msg(_o, code, userdata, offset, chunk);
1823 }
1824
1825 /* Called from thread context */
1826 static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk) {
1827     record_stream *s;
1828
1829     pa_source_output_assert_ref(o);
1830     s = RECORD_STREAM(o->userdata);
1831     record_stream_assert_ref(s);
1832     pa_assert(chunk);
1833
1834     pa_atomic_add(&s->on_the_fly, chunk->length);
1835     pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), RECORD_STREAM_MESSAGE_POST_DATA, NULL, 0, chunk, NULL);
1836 }
1837
1838 static void source_output_kill_cb(pa_source_output *o) {
1839     record_stream *s;
1840
1841     pa_source_output_assert_ref(o);
1842     s = RECORD_STREAM(o->userdata);
1843     record_stream_assert_ref(s);
1844
1845     record_stream_send_killed(s);
1846     record_stream_unlink(s);
1847 }
1848
1849 static pa_usec_t source_output_get_latency_cb(pa_source_output *o) {
1850     record_stream *s;
1851
1852     pa_source_output_assert_ref(o);
1853     s = RECORD_STREAM(o->userdata);
1854     record_stream_assert_ref(s);
1855
1856     /*pa_log("get_latency: %u", pa_memblockq_get_length(s->memblockq));*/
1857
1858     return pa_bytes_to_usec(pa_memblockq_get_length(s->memblockq), &o->sample_spec);
1859 }
1860
1861 /* Called from main context */
1862 static void source_output_send_event_cb(pa_source_output *o, const char *event, pa_proplist *pl) {
1863     record_stream *s;
1864     pa_tagstruct *t;
1865
1866     pa_source_output_assert_ref(o);
1867     s = RECORD_STREAM(o->userdata);
1868     record_stream_assert_ref(s);
1869
1870     if (s->connection->version < 15)
1871       return;
1872
1873     t = pa_tagstruct_new(NULL, 0);
1874     pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_EVENT);
1875     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1876     pa_tagstruct_putu32(t, s->index);
1877     pa_tagstruct_puts(t, event);
1878     pa_tagstruct_put_proplist(t, pl);
1879     pa_pstream_send_tagstruct(s->connection->pstream, t);
1880 }
1881
1882 /* Called from main context */
1883 static void source_output_suspend_cb(pa_source_output *o, bool suspend) {
1884     record_stream *s;
1885     pa_tagstruct *t;
1886
1887     pa_source_output_assert_ref(o);
1888     s = RECORD_STREAM(o->userdata);
1889     record_stream_assert_ref(s);
1890
1891     if (s->connection->version < 12)
1892       return;
1893
1894     t = pa_tagstruct_new(NULL, 0);
1895     pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_SUSPENDED);
1896     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1897     pa_tagstruct_putu32(t, s->index);
1898     pa_tagstruct_put_boolean(t, suspend);
1899     pa_pstream_send_tagstruct(s->connection->pstream, t);
1900 }
1901
1902 /* Called from main context */
1903 static void source_output_moving_cb(pa_source_output *o, pa_source *dest) {
1904     record_stream *s;
1905     pa_tagstruct *t;
1906
1907     pa_source_output_assert_ref(o);
1908     s = RECORD_STREAM(o->userdata);
1909     record_stream_assert_ref(s);
1910
1911     if (!dest)
1912         return;
1913
1914     fix_record_buffer_attr_pre(s);
1915     pa_memblockq_set_maxlength(s->memblockq, s->buffer_attr.maxlength);
1916     pa_memblockq_get_attr(s->memblockq, &s->buffer_attr);
1917     fix_record_buffer_attr_post(s);
1918
1919     if (s->connection->version < 12)
1920       return;
1921
1922     t = pa_tagstruct_new(NULL, 0);
1923     pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_MOVED);
1924     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1925     pa_tagstruct_putu32(t, s->index);
1926     pa_tagstruct_putu32(t, dest->index);
1927     pa_tagstruct_puts(t, dest->name);
1928     pa_tagstruct_put_boolean(t, pa_source_get_state(dest) == PA_SOURCE_SUSPENDED);
1929
1930     if (s->connection->version >= 13) {
1931         pa_tagstruct_putu32(t, s->buffer_attr.maxlength);
1932         pa_tagstruct_putu32(t, s->buffer_attr.fragsize);
1933         pa_tagstruct_put_usec(t, s->configured_source_latency);
1934     }
1935
1936     pa_pstream_send_tagstruct(s->connection->pstream, t);
1937 }
1938
1939 /*** pdispatch callbacks ***/
1940
1941 static void protocol_error(pa_native_connection *c) {
1942     pa_log("protocol error, kicking client");
1943     native_connection_unlink(c);
1944 }
1945
1946 #define CHECK_VALIDITY(pstream, expression, tag, error) do { \
1947 if (!(expression)) { \
1948     pa_pstream_send_error((pstream), (tag), (error)); \
1949     return; \
1950 } \
1951 } while(0);
1952
1953 #define CHECK_VALIDITY_GOTO(pstream, expression, tag, error, label) do { \
1954 if (!(expression)) { \
1955     pa_pstream_send_error((pstream), (tag), (error)); \
1956     goto label; \
1957 } \
1958 } while(0);
1959
1960 static pa_tagstruct *reply_new(uint32_t tag) {
1961     pa_tagstruct *reply;
1962
1963     reply = pa_tagstruct_new(NULL, 0);
1964     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1965     pa_tagstruct_putu32(reply, tag);
1966     return reply;
1967 }
1968
1969 static void command_create_playback_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1970     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
1971     playback_stream *s;
1972     uint32_t sink_index, syncid, missing = 0;
1973     pa_buffer_attr attr;
1974     const char *name = NULL, *sink_name;
1975     pa_sample_spec ss;
1976     pa_channel_map map;
1977     pa_tagstruct *reply;
1978     pa_sink *sink = NULL;
1979     pa_cvolume volume;
1980     bool
1981         corked = false,
1982         no_remap = false,
1983         no_remix = false,
1984         fix_format = false,
1985         fix_rate = false,
1986         fix_channels = false,
1987         no_move = false,
1988         variable_rate = false,
1989         muted = false,
1990         adjust_latency = false,
1991         early_requests = false,
1992         dont_inhibit_auto_suspend = false,
1993         volume_set = true,
1994         muted_set = false,
1995         fail_on_suspend = false,
1996         relative_volume = false,
1997         passthrough = false;
1998
1999     pa_sink_input_flags_t flags = 0;
2000     pa_proplist *p = NULL;
2001     int ret = PA_ERR_INVALID;
2002     uint8_t n_formats = 0;
2003     pa_format_info *format;
2004     pa_idxset *formats = NULL;
2005     uint32_t i;
2006
2007     pa_native_connection_assert_ref(c);
2008     pa_assert(t);
2009     memset(&attr, 0, sizeof(attr));
2010
2011     if ((c->version < 13 && (pa_tagstruct_gets(t, &name) < 0 || !name)) ||
2012         pa_tagstruct_get(
2013                 t,
2014                 PA_TAG_SAMPLE_SPEC, &ss,
2015                 PA_TAG_CHANNEL_MAP, &map,
2016                 PA_TAG_U32, &sink_index,
2017                 PA_TAG_STRING, &sink_name,
2018                 PA_TAG_U32, &attr.maxlength,
2019                 PA_TAG_BOOLEAN, &corked,
2020                 PA_TAG_U32, &attr.tlength,
2021                 PA_TAG_U32, &attr.prebuf,
2022                 PA_TAG_U32, &attr.minreq,
2023                 PA_TAG_U32, &syncid,
2024                 PA_TAG_CVOLUME, &volume,
2025                 PA_TAG_INVALID) < 0) {
2026
2027         protocol_error(c);
2028         goto finish;
2029     }
2030
2031     CHECK_VALIDITY_GOTO(c->pstream, c->authorized, tag, PA_ERR_ACCESS, finish);
2032     CHECK_VALIDITY_GOTO(c->pstream, !sink_name || pa_namereg_is_valid_name_or_wildcard(sink_name, PA_NAMEREG_SINK), tag, PA_ERR_INVALID, finish);
2033     CHECK_VALIDITY_GOTO(c->pstream, sink_index == PA_INVALID_INDEX || !sink_name, tag, PA_ERR_INVALID, finish);
2034     CHECK_VALIDITY_GOTO(c->pstream, !sink_name || sink_index == PA_INVALID_INDEX, tag, PA_ERR_INVALID, finish);
2035     CHECK_VALIDITY_GOTO(c->pstream, pa_cvolume_valid(&volume), tag, PA_ERR_INVALID, finish);
2036
2037     p = pa_proplist_new();
2038
2039     if (name)
2040         pa_proplist_sets(p, PA_PROP_MEDIA_NAME, name);
2041
2042     if (c->version >= 12) {
2043         /* Since 0.9.8 the user can ask for a couple of additional flags */
2044
2045         if (pa_tagstruct_get_boolean(t, &no_remap) < 0 ||
2046             pa_tagstruct_get_boolean(t, &no_remix) < 0 ||
2047             pa_tagstruct_get_boolean(t, &fix_format) < 0 ||
2048             pa_tagstruct_get_boolean(t, &fix_rate) < 0 ||
2049             pa_tagstruct_get_boolean(t, &fix_channels) < 0 ||
2050             pa_tagstruct_get_boolean(t, &no_move) < 0 ||
2051             pa_tagstruct_get_boolean(t, &variable_rate) < 0) {
2052
2053             protocol_error(c);
2054             goto finish;
2055         }
2056     }
2057
2058     if (c->version >= 13) {
2059
2060         if (pa_tagstruct_get_boolean(t, &muted) < 0 ||
2061             pa_tagstruct_get_boolean(t, &adjust_latency) < 0 ||
2062             pa_tagstruct_get_proplist(t, p) < 0) {
2063
2064             protocol_error(c);
2065             goto finish;
2066         }
2067     }
2068
2069     if (c->version >= 14) {
2070
2071         if (pa_tagstruct_get_boolean(t, &volume_set) < 0 ||
2072             pa_tagstruct_get_boolean(t, &early_requests) < 0) {
2073
2074             protocol_error(c);
2075             goto finish;
2076         }
2077     }
2078
2079     if (c->version >= 15) {
2080
2081         if (pa_tagstruct_get_boolean(t, &muted_set) < 0 ||
2082             pa_tagstruct_get_boolean(t, &dont_inhibit_auto_suspend) < 0 ||
2083             pa_tagstruct_get_boolean(t, &fail_on_suspend) < 0) {
2084
2085             protocol_error(c);
2086             goto finish;
2087         }
2088     }
2089
2090     if (c->version >= 17) {
2091
2092         if (pa_tagstruct_get_boolean(t, &relative_volume) < 0) {
2093
2094             protocol_error(c);
2095             goto finish;
2096         }
2097     }
2098
2099     if (c->version >= 18) {
2100
2101         if (pa_tagstruct_get_boolean(t, &passthrough) < 0 ) {
2102             protocol_error(c);
2103             goto finish;
2104         }
2105     }
2106
2107     if (c->version >= 21) {
2108
2109         if (pa_tagstruct_getu8(t, &n_formats) < 0) {
2110             protocol_error(c);
2111             goto finish;
2112         }
2113
2114         if (n_formats)
2115             formats = pa_idxset_new(NULL, NULL);
2116
2117         for (i = 0; i < n_formats; i++) {
2118             format = pa_format_info_new();
2119             if (pa_tagstruct_get_format_info(t, format) < 0) {
2120                 protocol_error(c);
2121                 goto finish;
2122             }
2123             pa_idxset_put(formats, format, NULL);
2124         }
2125     }
2126
2127     if (n_formats == 0) {
2128         CHECK_VALIDITY_GOTO(c->pstream, pa_sample_spec_valid(&ss), tag, PA_ERR_INVALID, finish);
2129         CHECK_VALIDITY_GOTO(c->pstream, map.channels == ss.channels && volume.channels == ss.channels, tag, PA_ERR_INVALID, finish);
2130         CHECK_VALIDITY_GOTO(c->pstream, pa_channel_map_valid(&map), tag, PA_ERR_INVALID, finish);
2131     } else {
2132         PA_IDXSET_FOREACH(format, formats, i) {
2133             CHECK_VALIDITY_GOTO(c->pstream, pa_format_info_valid(format), tag, PA_ERR_INVALID, finish);
2134         }
2135     }
2136
2137     if (!pa_tagstruct_eof(t)) {
2138         protocol_error(c);
2139         goto finish;
2140     }
2141
2142     if (sink_index != PA_INVALID_INDEX) {
2143
2144         if (!(sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index))) {
2145             pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
2146             goto finish;
2147         }
2148
2149     } else if (sink_name) {
2150
2151         if (!(sink = pa_namereg_get(c->protocol->core, sink_name, PA_NAMEREG_SINK))) {
2152             pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
2153             goto finish;
2154         }
2155     }
2156
2157     flags =
2158         (corked ? PA_SINK_INPUT_START_CORKED : 0) |
2159         (no_remap ? PA_SINK_INPUT_NO_REMAP : 0) |
2160         (no_remix ? PA_SINK_INPUT_NO_REMIX : 0) |
2161         (fix_format ? PA_SINK_INPUT_FIX_FORMAT : 0) |
2162         (fix_rate ? PA_SINK_INPUT_FIX_RATE : 0) |
2163         (fix_channels ? PA_SINK_INPUT_FIX_CHANNELS : 0) |
2164         (no_move ? PA_SINK_INPUT_DONT_MOVE : 0) |
2165         (variable_rate ? PA_SINK_INPUT_VARIABLE_RATE : 0) |
2166         (dont_inhibit_auto_suspend ? PA_SINK_INPUT_DONT_INHIBIT_AUTO_SUSPEND : 0) |
2167         (fail_on_suspend ? PA_SINK_INPUT_NO_CREATE_ON_SUSPEND|PA_SINK_INPUT_KILL_ON_SUSPEND : 0) |
2168         (passthrough ? PA_SINK_INPUT_PASSTHROUGH : 0);
2169
2170     /* Only since protocol version 15 there's a separate muted_set
2171      * flag. For older versions we synthesize it here */
2172     muted_set = muted_set || muted;
2173
2174     s = playback_stream_new(c, sink, &ss, &map, formats, &attr, volume_set ? &volume : NULL, muted, muted_set, flags, p, adjust_latency, early_requests, relative_volume, syncid, &missing, &ret);
2175     /* We no longer own the formats idxset */
2176     formats = NULL;
2177
2178     CHECK_VALIDITY_GOTO(c->pstream, s, tag, ret, finish);
2179
2180     reply = reply_new(tag);
2181     pa_tagstruct_putu32(reply, s->index);
2182     pa_assert(s->sink_input);
2183     pa_tagstruct_putu32(reply, s->sink_input->index);
2184     pa_tagstruct_putu32(reply, missing);
2185
2186 #ifdef PROTOCOL_NATIVE_DEBUG
2187     pa_log("initial request is %u", missing);
2188 #endif
2189
2190     if (c->version >= 9) {
2191         /* Since 0.9.0 we support sending the buffer metrics back to the client */
2192
2193         pa_tagstruct_putu32(reply, (uint32_t) s->buffer_attr.maxlength);
2194         pa_tagstruct_putu32(reply, (uint32_t) s->buffer_attr.tlength);
2195         pa_tagstruct_putu32(reply, (uint32_t) s->buffer_attr.prebuf);
2196         pa_tagstruct_putu32(reply, (uint32_t) s->buffer_attr.minreq);
2197     }
2198
2199     if (c->version >= 12) {
2200         /* Since 0.9.8 we support sending the chosen sample
2201          * spec/channel map/device/suspend status back to the
2202          * client */
2203
2204         pa_tagstruct_put_sample_spec(reply, &ss);
2205         pa_tagstruct_put_channel_map(reply, &map);
2206
2207         pa_tagstruct_putu32(reply, s->sink_input->sink->index);
2208         pa_tagstruct_puts(reply, s->sink_input->sink->name);
2209
2210         pa_tagstruct_put_boolean(reply, pa_sink_get_state(s->sink_input->sink) == PA_SINK_SUSPENDED);
2211     }
2212
2213     if (c->version >= 13)
2214         pa_tagstruct_put_usec(reply, s->configured_sink_latency);
2215
2216     if (c->version >= 21) {
2217         /* Send back the format we negotiated */
2218         if (s->sink_input->format)
2219             pa_tagstruct_put_format_info(reply, s->sink_input->format);
2220         else {
2221             pa_format_info *f = pa_format_info_new();
2222             pa_tagstruct_put_format_info(reply, f);
2223             pa_format_info_free(f);
2224         }
2225     }
2226
2227     pa_pstream_send_tagstruct(c->pstream, reply);
2228
2229 finish:
2230     if (p)
2231         pa_proplist_free(p);
2232     if (formats)
2233         pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
2234 }
2235
2236 static void command_delete_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2237     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
2238     uint32_t channel;
2239
2240     pa_native_connection_assert_ref(c);
2241     pa_assert(t);
2242
2243     if (pa_tagstruct_getu32(t, &channel) < 0 ||
2244         !pa_tagstruct_eof(t)) {
2245         protocol_error(c);
2246         return;
2247     }
2248
2249     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2250
2251     switch (command) {
2252
2253         case PA_COMMAND_DELETE_PLAYBACK_STREAM: {
2254             playback_stream *s;
2255             if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || !playback_stream_isinstance(s)) {
2256                 pa_pstream_send_error(c->pstream, tag, PA_ERR_EXIST);
2257                 return;
2258             }
2259
2260             playback_stream_unlink(s);
2261             break;
2262         }
2263
2264         case PA_COMMAND_DELETE_RECORD_STREAM: {
2265             record_stream *s;
2266             if (!(s = pa_idxset_get_by_index(c->record_streams, channel))) {
2267                 pa_pstream_send_error(c->pstream, tag, PA_ERR_EXIST);
2268                 return;
2269             }
2270
2271             record_stream_unlink(s);
2272             break;
2273         }
2274
2275         case PA_COMMAND_DELETE_UPLOAD_STREAM: {
2276             upload_stream *s;
2277
2278             if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || !upload_stream_isinstance(s)) {
2279                 pa_pstream_send_error(c->pstream, tag, PA_ERR_EXIST);
2280                 return;
2281             }
2282
2283             upload_stream_unlink(s);
2284             break;
2285         }
2286
2287         default:
2288             pa_assert_not_reached();
2289     }
2290
2291     pa_pstream_send_simple_ack(c->pstream, tag);
2292 }
2293
2294 static void command_create_record_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2295     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
2296     record_stream *s;
2297     pa_buffer_attr attr;
2298     uint32_t source_index;
2299     const char *name = NULL, *source_name;
2300     pa_sample_spec ss;
2301     pa_channel_map map;
2302     pa_tagstruct *reply;
2303     pa_source *source = NULL;
2304     pa_cvolume volume;
2305     bool
2306         corked = false,
2307         no_remap = false,
2308         no_remix = false,
2309         fix_format = false,
2310         fix_rate = false,
2311         fix_channels = false,
2312         no_move = false,
2313         variable_rate = false,
2314         muted = false,
2315         adjust_latency = false,
2316         peak_detect = false,
2317         early_requests = false,
2318         dont_inhibit_auto_suspend = false,
2319         volume_set = false,
2320         muted_set = false,
2321         fail_on_suspend = false,
2322         relative_volume = false,
2323         passthrough = false;
2324
2325     pa_source_output_flags_t flags = 0;
2326     pa_proplist *p = NULL;
2327     uint32_t direct_on_input_idx = PA_INVALID_INDEX;
2328     pa_sink_input *direct_on_input = NULL;
2329     int ret = PA_ERR_INVALID;
2330     uint8_t n_formats = 0;
2331     pa_format_info *format;
2332     pa_idxset *formats = NULL;
2333     uint32_t i;
2334
2335     pa_native_connection_assert_ref(c);
2336     pa_assert(t);
2337
2338     memset(&attr, 0, sizeof(attr));
2339
2340     if ((c->version < 13 && (pa_tagstruct_gets(t, &name) < 0 || !name)) ||
2341         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
2342         pa_tagstruct_get_channel_map(t, &map) < 0 ||
2343         pa_tagstruct_getu32(t, &source_index) < 0 ||
2344         pa_tagstruct_gets(t, &source_name) < 0 ||
2345         pa_tagstruct_getu32(t, &attr.maxlength) < 0 ||
2346         pa_tagstruct_get_boolean(t, &corked) < 0 ||
2347         pa_tagstruct_getu32(t, &attr.fragsize) < 0) {
2348
2349         protocol_error(c);
2350         goto finish;
2351     }
2352
2353     CHECK_VALIDITY_GOTO(c->pstream, c->authorized, tag, PA_ERR_ACCESS, finish);
2354     CHECK_VALIDITY_GOTO(c->pstream, !source_name || pa_namereg_is_valid_name_or_wildcard(source_name, PA_NAMEREG_SOURCE), tag, PA_ERR_INVALID, finish);
2355     CHECK_VALIDITY_GOTO(c->pstream, source_index == PA_INVALID_INDEX || !source_name, tag, PA_ERR_INVALID, finish);
2356     CHECK_VALIDITY_GOTO(c->pstream, !source_name || source_index == PA_INVALID_INDEX, tag, PA_ERR_INVALID, finish);
2357
2358     p = pa_proplist_new();
2359
2360     if (name)
2361         pa_proplist_sets(p, PA_PROP_MEDIA_NAME, name);
2362
2363     if (c->version >= 12) {
2364         /* Since 0.9.8 the user can ask for a couple of additional flags */
2365
2366         if (pa_tagstruct_get_boolean(t, &no_remap) < 0 ||
2367             pa_tagstruct_get_boolean(t, &no_remix) < 0 ||
2368             pa_tagstruct_get_boolean(t, &fix_format) < 0 ||
2369             pa_tagstruct_get_boolean(t, &fix_rate) < 0 ||
2370             pa_tagstruct_get_boolean(t, &fix_channels) < 0 ||
2371             pa_tagstruct_get_boolean(t, &no_move) < 0 ||
2372             pa_tagstruct_get_boolean(t, &variable_rate) < 0) {
2373
2374             protocol_error(c);
2375             goto finish;
2376         }
2377     }
2378
2379     if (c->version >= 13) {
2380
2381         if (pa_tagstruct_get_boolean(t, &peak_detect) < 0 ||
2382             pa_tagstruct_get_boolean(t, &adjust_latency) < 0 ||
2383             pa_tagstruct_get_proplist(t, p) < 0 ||
2384             pa_tagstruct_getu32(t, &direct_on_input_idx) < 0) {
2385
2386             protocol_error(c);
2387             goto finish;
2388         }
2389     }
2390
2391     if (c->version >= 14) {
2392
2393         if (pa_tagstruct_get_boolean(t, &early_requests) < 0) {
2394             protocol_error(c);
2395             goto finish;
2396         }
2397     }
2398
2399     if (c->version >= 15) {
2400
2401         if (pa_tagstruct_get_boolean(t, &dont_inhibit_auto_suspend) < 0 ||
2402             pa_tagstruct_get_boolean(t, &fail_on_suspend) < 0) {
2403
2404             protocol_error(c);
2405             goto finish;
2406         }
2407     }
2408
2409     if (c->version >= 22) {
2410         /* For newer client versions (with per-source-output volumes), we try
2411          * to make the behaviour for playback and record streams the same. */
2412         volume_set = true;
2413
2414         if (pa_tagstruct_getu8(t, &n_formats) < 0) {
2415             protocol_error(c);
2416             goto finish;
2417         }
2418
2419         if (n_formats)
2420             formats = pa_idxset_new(NULL, NULL);
2421
2422         for (i = 0; i < n_formats; i++) {
2423             format = pa_format_info_new();
2424             if (pa_tagstruct_get_format_info(t, format) < 0) {
2425                 protocol_error(c);
2426                 goto finish;
2427             }
2428             pa_idxset_put(formats, format, NULL);
2429         }
2430
2431         if (pa_tagstruct_get_cvolume(t, &volume) < 0 ||
2432             pa_tagstruct_get_boolean(t, &muted) < 0 ||
2433             pa_tagstruct_get_boolean(t, &volume_set) < 0 ||
2434             pa_tagstruct_get_boolean(t, &muted_set) < 0 ||
2435             pa_tagstruct_get_boolean(t, &relative_volume) < 0 ||
2436             pa_tagstruct_get_boolean(t, &passthrough) < 0) {
2437
2438             protocol_error(c);
2439             goto finish;
2440         }
2441
2442         CHECK_VALIDITY_GOTO(c->pstream, pa_cvolume_valid(&volume), tag, PA_ERR_INVALID, finish);
2443     }
2444
2445     if (n_formats == 0) {
2446         CHECK_VALIDITY_GOTO(c->pstream, pa_sample_spec_valid(&ss), tag, PA_ERR_INVALID, finish);
2447         CHECK_VALIDITY_GOTO(c->pstream, map.channels == ss.channels, tag, PA_ERR_INVALID, finish);
2448         CHECK_VALIDITY_GOTO(c->pstream, c->version < 22 || (volume.channels == ss.channels), tag, PA_ERR_INVALID, finish);
2449         CHECK_VALIDITY_GOTO(c->pstream, pa_channel_map_valid(&map), tag, PA_ERR_INVALID, finish);
2450     } else {
2451         PA_IDXSET_FOREACH(format, formats, i) {
2452             CHECK_VALIDITY_GOTO(c->pstream, pa_format_info_valid(format), tag, PA_ERR_INVALID, finish);
2453         }
2454     }
2455
2456     if (!pa_tagstruct_eof(t)) {
2457         protocol_error(c);
2458         goto finish;
2459     }
2460
2461     if (source_index != PA_INVALID_INDEX) {
2462
2463         if (!(source = pa_idxset_get_by_index(c->protocol->core->sources, source_index))) {
2464             pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
2465             goto finish;
2466         }
2467
2468     } else if (source_name) {
2469
2470         if (!(source = pa_namereg_get(c->protocol->core, source_name, PA_NAMEREG_SOURCE))) {
2471             pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
2472             goto finish;
2473         }
2474     }
2475
2476     if (direct_on_input_idx != PA_INVALID_INDEX) {
2477
2478         if (!(direct_on_input = pa_idxset_get_by_index(c->protocol->core->sink_inputs, direct_on_input_idx))) {
2479             pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
2480             goto finish;
2481         }
2482     }
2483
2484     flags =
2485         (corked ? PA_SOURCE_OUTPUT_START_CORKED : 0) |
2486         (no_remap ? PA_SOURCE_OUTPUT_NO_REMAP : 0) |
2487         (no_remix ? PA_SOURCE_OUTPUT_NO_REMIX : 0) |
2488         (fix_format ? PA_SOURCE_OUTPUT_FIX_FORMAT : 0) |
2489         (fix_rate ? PA_SOURCE_OUTPUT_FIX_RATE : 0) |
2490         (fix_channels ? PA_SOURCE_OUTPUT_FIX_CHANNELS : 0) |
2491         (no_move ? PA_SOURCE_OUTPUT_DONT_MOVE : 0) |
2492         (variable_rate ? PA_SOURCE_OUTPUT_VARIABLE_RATE : 0) |
2493         (dont_inhibit_auto_suspend ? PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND : 0) |
2494         (fail_on_suspend ? PA_SOURCE_OUTPUT_NO_CREATE_ON_SUSPEND|PA_SOURCE_OUTPUT_KILL_ON_SUSPEND : 0) |
2495         (passthrough ? PA_SOURCE_OUTPUT_PASSTHROUGH : 0);
2496
2497     s = record_stream_new(c, source, &ss, &map, formats, &attr, volume_set ? &volume : NULL, muted, muted_set, flags, p, adjust_latency, early_requests, relative_volume, peak_detect, direct_on_input, &ret);
2498
2499     CHECK_VALIDITY_GOTO(c->pstream, s, tag, ret, finish);
2500
2501     reply = reply_new(tag);
2502     pa_tagstruct_putu32(reply, s->index);
2503     pa_assert(s->source_output);
2504     pa_tagstruct_putu32(reply, s->source_output->index);
2505
2506     if (c->version >= 9) {
2507         /* Since 0.9 we support sending the buffer metrics back to the client */
2508
2509         pa_tagstruct_putu32(reply, (uint32_t) s->buffer_attr.maxlength);
2510         pa_tagstruct_putu32(reply, (uint32_t) s->buffer_attr.fragsize);
2511     }
2512
2513     if (c->version >= 12) {
2514         /* Since 0.9.8 we support sending the chosen sample
2515          * spec/channel map/device/suspend status back to the
2516          * client */
2517
2518         pa_tagstruct_put_sample_spec(reply, &ss);
2519         pa_tagstruct_put_channel_map(reply, &map);
2520
2521         pa_tagstruct_putu32(reply, s->source_output->source->index);
2522         pa_tagstruct_puts(reply, s->source_output->source->name);
2523
2524         pa_tagstruct_put_boolean(reply, pa_source_get_state(s->source_output->source) == PA_SOURCE_SUSPENDED);
2525     }
2526
2527     if (c->version >= 13)
2528         pa_tagstruct_put_usec(reply, s->configured_source_latency);
2529
2530     if (c->version >= 22) {
2531         /* Send back the format we negotiated */
2532         if (s->source_output->format)
2533             pa_tagstruct_put_format_info(reply, s->source_output->format);
2534         else {
2535             pa_format_info *f = pa_format_info_new();
2536             pa_tagstruct_put_format_info(reply, f);
2537             pa_format_info_free(f);
2538         }
2539     }
2540
2541     pa_pstream_send_tagstruct(c->pstream, reply);
2542
2543 finish:
2544     if (p)
2545         pa_proplist_free(p);
2546     if (formats)
2547         pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
2548 }
2549
2550 static void command_exit(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2551     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
2552     int ret;
2553
2554     pa_native_connection_assert_ref(c);
2555     pa_assert(t);
2556
2557     if (!pa_tagstruct_eof(t)) {
2558         protocol_error(c);
2559         return;
2560     }
2561
2562     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2563     ret = pa_core_exit(c->protocol->core, false, 0);
2564     CHECK_VALIDITY(c->pstream, ret >= 0, tag, PA_ERR_ACCESS);
2565
2566     pa_log_debug("Client %s asks us to terminate.", pa_strnull(pa_proplist_gets(c->client->proplist, PA_PROP_APPLICATION_PROCESS_BINARY)));
2567
2568     pa_pstream_send_simple_ack(c->pstream, tag); /* nonsense */
2569 }
2570
2571 static void command_auth(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2572     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
2573     const void*cookie;
2574     pa_tagstruct *reply;
2575     bool shm_on_remote = false, do_shm;
2576
2577     pa_native_connection_assert_ref(c);
2578     pa_assert(t);
2579
2580     if (pa_tagstruct_getu32(t, &c->version) < 0 ||
2581         pa_tagstruct_get_arbitrary(t, &cookie, PA_NATIVE_COOKIE_LENGTH) < 0 ||
2582         !pa_tagstruct_eof(t)) {
2583         protocol_error(c);
2584         return;
2585     }
2586
2587     /* Minimum supported version */
2588     if (c->version < 8) {
2589         pa_pstream_send_error(c->pstream, tag, PA_ERR_VERSION);
2590         return;
2591     }
2592
2593     /* Starting with protocol version 13 the MSB of the version tag
2594        reflects if shm is available for this pa_native_connection or
2595        not. */
2596     if (c->version >= 13) {
2597         shm_on_remote = !!(c->version & 0x80000000U);
2598         c->version &= 0x7FFFFFFFU;
2599     }
2600
2601     pa_log_debug("Protocol version: remote %u, local %u", c->version, PA_PROTOCOL_VERSION);
2602
2603     pa_proplist_setf(c->client->proplist, "native-protocol.version", "%u", c->version);
2604
2605     if (!c->authorized) {
2606         bool success = false;
2607
2608 #ifdef HAVE_CREDS
2609         const pa_creds *creds;
2610
2611         if ((creds = pa_pdispatch_creds(pd))) {
2612             if (creds->uid == getuid())
2613                 success = true;
2614             else if (c->options->auth_group) {
2615                 int r;
2616                 gid_t gid;
2617
2618                 if ((gid = pa_get_gid_of_group(c->options->auth_group)) == (gid_t) -1)
2619                     pa_log_warn("Failed to get GID of group '%s'", c->options->auth_group);
2620                 else if (gid == creds->gid)
2621                     success = true;
2622
2623                 if (!success) {
2624                     if ((r = pa_uid_in_group(creds->uid, c->options->auth_group)) < 0)
2625                         pa_log_warn("Failed to check group membership.");
2626                     else if (r > 0)
2627                         success = true;
2628                 }
2629             }
2630
2631             pa_log_info("Got credentials: uid=%lu gid=%lu success=%i",
2632                         (unsigned long) creds->uid,
2633                         (unsigned long) creds->gid,
2634                         (int) success);
2635         }
2636 #endif
2637
2638         if (!success && c->options->auth_cookie) {
2639             const uint8_t *ac;
2640
2641             if ((ac = pa_auth_cookie_read(c->options->auth_cookie, PA_NATIVE_COOKIE_LENGTH)))
2642                 if (memcmp(ac, cookie, PA_NATIVE_COOKIE_LENGTH) == 0)
2643                     success = true;
2644         }
2645
2646         if (!success) {
2647             pa_log_warn("Denied access to client with invalid authorization data.");
2648             pa_pstream_send_error(c->pstream, tag, PA_ERR_ACCESS);
2649             return;
2650         }
2651
2652         c->authorized = true;
2653         if (c->auth_timeout_event) {
2654             c->protocol->core->mainloop->time_free(c->auth_timeout_event);
2655             c->auth_timeout_event = NULL;
2656         }
2657     }
2658
2659     /* Enable shared memory support if possible */
2660     do_shm =
2661         pa_mempool_is_shared(c->protocol->core->mempool) &&
2662         c->is_local;
2663
2664     pa_log_debug("SHM possible: %s", pa_yes_no(do_shm));
2665
2666     if (do_shm)
2667         if (c->version < 10 || (c->version >= 13 && !shm_on_remote))
2668             do_shm = false;
2669
2670 #ifdef HAVE_CREDS
2671     if (do_shm) {
2672         /* Only enable SHM if both sides are owned by the same
2673          * user. This is a security measure because otherwise data
2674          * private to the user might leak. */
2675
2676         const pa_creds *creds;
2677         if (!(creds = pa_pdispatch_creds(pd)) || getuid() != creds->uid)
2678             do_shm = false;
2679     }
2680 #endif
2681
2682     pa_log_debug("Negotiated SHM: %s", pa_yes_no(do_shm));
2683     pa_pstream_enable_shm(c->pstream, do_shm);
2684
2685     reply = reply_new(tag);
2686     pa_tagstruct_putu32(reply, PA_PROTOCOL_VERSION | (do_shm ? 0x80000000 : 0));
2687
2688 #ifdef HAVE_CREDS
2689 {
2690     /* SHM support is only enabled after both sides made sure they are the same user. */
2691
2692     pa_creds ucred;
2693
2694     ucred.uid = getuid();
2695     ucred.gid = getgid();
2696
2697     pa_pstream_send_tagstruct_with_creds(c->pstream, reply, &ucred);
2698 }
2699 #else
2700     pa_pstream_send_tagstruct(c->pstream, reply);
2701 #endif
2702 }
2703
2704 static void command_set_client_name(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2705     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
2706     const char *name = NULL;
2707     pa_proplist *p;
2708     pa_tagstruct *reply;
2709
2710     pa_native_connection_assert_ref(c);
2711     pa_assert(t);
2712
2713     p = pa_proplist_new();
2714
2715     if ((c->version < 13 && pa_tagstruct_gets(t, &name) < 0) ||
2716         (c->version >= 13 && pa_tagstruct_get_proplist(t, p) < 0) ||
2717         !pa_tagstruct_eof(t)) {
2718
2719         protocol_error(c);
2720         pa_proplist_free(p);
2721         return;
2722     }
2723
2724     if (name)
2725         if (pa_proplist_sets(p, PA_PROP_APPLICATION_NAME, name) < 0) {
2726             pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
2727             pa_proplist_free(p);
2728             return;
2729         }
2730
2731     pa_client_update_proplist(c->client, PA_UPDATE_REPLACE, p);
2732     pa_proplist_free(p);
2733
2734     reply = reply_new(tag);
2735
2736     if (c->version >= 13)
2737         pa_tagstruct_putu32(reply, c->client->index);
2738
2739     pa_pstream_send_tagstruct(c->pstream, reply);
2740 }
2741
2742 static void command_lookup(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2743     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
2744     const char *name;
2745     uint32_t idx = PA_IDXSET_INVALID;
2746
2747     pa_native_connection_assert_ref(c);
2748     pa_assert(t);
2749
2750     if (pa_tagstruct_gets(t, &name) < 0 ||
2751         !pa_tagstruct_eof(t)) {
2752         protocol_error(c);
2753         return;
2754     }
2755
2756     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2757     CHECK_VALIDITY(c->pstream, name && pa_namereg_is_valid_name_or_wildcard(name, command == PA_COMMAND_LOOKUP_SINK ? PA_NAMEREG_SINK : PA_NAMEREG_SOURCE), tag, PA_ERR_INVALID);
2758
2759     if (command == PA_COMMAND_LOOKUP_SINK) {
2760         pa_sink *sink;
2761         if ((sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK)))
2762             idx = sink->index;
2763     } else {
2764         pa_source *source;
2765         pa_assert(command == PA_COMMAND_LOOKUP_SOURCE);
2766         if ((source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE)))
2767             idx = source->index;
2768     }
2769
2770     if (idx == PA_IDXSET_INVALID)
2771         pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
2772     else {
2773         pa_tagstruct *reply;
2774         reply = reply_new(tag);
2775         pa_tagstruct_putu32(reply, idx);
2776         pa_pstream_send_tagstruct(c->pstream, reply);
2777     }
2778 }
2779
2780 static void command_drain_playback_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2781     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
2782     uint32_t idx;
2783     playback_stream *s;
2784
2785     pa_native_connection_assert_ref(c);
2786     pa_assert(t);
2787
2788     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2789         !pa_tagstruct_eof(t)) {
2790         protocol_error(c);
2791         return;
2792     }
2793
2794     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2795     s = pa_idxset_get_by_index(c->output_streams, idx);
2796     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2797     CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
2798
2799     pa_asyncmsgq_post(s->sink_input->sink->asyncmsgq, PA_MSGOBJECT(s->sink_input), SINK_INPUT_MESSAGE_DRAIN, PA_UINT_TO_PTR(tag), 0, NULL, NULL);
2800 }
2801
2802 static void command_stat(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2803     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
2804     pa_tagstruct *reply;
2805     const pa_mempool_stat *stat;
2806
2807     pa_native_connection_assert_ref(c);
2808     pa_assert(t);
2809
2810     if (!pa_tagstruct_eof(t)) {
2811         protocol_error(c);
2812         return;
2813     }
2814
2815     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2816
2817     stat = pa_mempool_get_stat(c->protocol->core->mempool);
2818
2819     reply = reply_new(tag);
2820     pa_tagstruct_putu32(reply, (uint32_t) pa_atomic_load(&stat->n_allocated));
2821     pa_tagstruct_putu32(reply, (uint32_t) pa_atomic_load(&stat->allocated_size));
2822     pa_tagstruct_putu32(reply, (uint32_t) pa_atomic_load(&stat->n_accumulated));
2823     pa_tagstruct_putu32(reply, (uint32_t) pa_atomic_load(&stat->accumulated_size));
2824     pa_tagstruct_putu32(reply, (uint32_t) pa_scache_total_size(c->protocol->core));
2825     pa_pstream_send_tagstruct(c->pstream, reply);
2826 }
2827
2828 static void command_get_playback_latency(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2829     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
2830     pa_tagstruct *reply;
2831     playback_stream *s;
2832     struct timeval tv, now;
2833     uint32_t idx;
2834
2835     pa_native_connection_assert_ref(c);
2836     pa_assert(t);
2837
2838     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2839         pa_tagstruct_get_timeval(t, &tv) < 0 ||
2840         !pa_tagstruct_eof(t)) {
2841         protocol_error(c);
2842         return;
2843     }
2844
2845     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2846     s = pa_idxset_get_by_index(c->output_streams, idx);
2847     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2848     CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
2849
2850     /* Get an atomic snapshot of all timing parameters */
2851     pa_assert_se(pa_asyncmsgq_send(s->sink_input->sink->asyncmsgq, PA_MSGOBJECT(s->sink_input), SINK_INPUT_MESSAGE_UPDATE_LATENCY, s, 0, NULL) == 0);
2852
2853     reply = reply_new(tag);
2854     pa_tagstruct_put_usec(reply,
2855                           s->current_sink_latency +
2856                           pa_bytes_to_usec(s->render_memblockq_length, &s->sink_input->sink->sample_spec));
2857     pa_tagstruct_put_usec(reply, 0);
2858     pa_tagstruct_put_boolean(reply,
2859                              s->playing_for > 0 &&
2860                              pa_sink_get_state(s->sink_input->sink) == PA_SINK_RUNNING &&
2861                              pa_sink_input_get_state(s->sink_input) == PA_SINK_INPUT_RUNNING);
2862     pa_tagstruct_put_timeval(reply, &tv);
2863     pa_tagstruct_put_timeval(reply, pa_gettimeofday(&now));
2864     pa_tagstruct_puts64(reply, s->write_index);
2865     pa_tagstruct_puts64(reply, s->read_index);
2866
2867     if (c->version >= 13) {
2868         pa_tagstruct_putu64(reply, s->underrun_for);
2869         pa_tagstruct_putu64(reply, s->playing_for);
2870     }
2871
2872     pa_pstream_send_tagstruct(c->pstream, reply);
2873 }
2874
2875 static void command_get_record_latency(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2876     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
2877     pa_tagstruct *reply;
2878     record_stream *s;
2879     struct timeval tv, now;
2880     uint32_t idx;
2881
2882     pa_native_connection_assert_ref(c);
2883     pa_assert(t);
2884
2885     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2886         pa_tagstruct_get_timeval(t, &tv) < 0 ||
2887         !pa_tagstruct_eof(t)) {
2888         protocol_error(c);
2889         return;
2890     }
2891
2892     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2893     s = pa_idxset_get_by_index(c->record_streams, idx);
2894     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2895
2896     /* Get an atomic snapshot of all timing parameters */
2897     pa_assert_se(pa_asyncmsgq_send(s->source_output->source->asyncmsgq, PA_MSGOBJECT(s->source_output), SOURCE_OUTPUT_MESSAGE_UPDATE_LATENCY, s, 0, NULL) == 0);
2898
2899     reply = reply_new(tag);
2900     pa_tagstruct_put_usec(reply, s->current_monitor_latency);
2901     pa_tagstruct_put_usec(reply,
2902                           s->current_source_latency +
2903                           pa_bytes_to_usec(s->on_the_fly_snapshot, &s->source_output->source->sample_spec));
2904     pa_tagstruct_put_boolean(reply,
2905                              pa_source_get_state(s->source_output->source) == PA_SOURCE_RUNNING &&
2906                              pa_source_output_get_state(s->source_output) == PA_SOURCE_OUTPUT_RUNNING);
2907     pa_tagstruct_put_timeval(reply, &tv);
2908     pa_tagstruct_put_timeval(reply, pa_gettimeofday(&now));
2909     pa_tagstruct_puts64(reply, pa_memblockq_get_write_index(s->memblockq));
2910     pa_tagstruct_puts64(reply, pa_memblockq_get_read_index(s->memblockq));
2911     pa_pstream_send_tagstruct(c->pstream, reply);
2912 }
2913
2914 static void command_create_upload_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2915     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
2916     upload_stream *s;
2917     uint32_t length;
2918     const char *name = NULL;
2919     pa_sample_spec ss;
2920     pa_channel_map map;
2921     pa_tagstruct *reply;
2922     pa_proplist *p;
2923
2924     pa_native_connection_assert_ref(c);
2925     pa_assert(t);
2926
2927     if (pa_tagstruct_gets(t, &name) < 0 ||
2928         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
2929         pa_tagstruct_get_channel_map(t, &map) < 0 ||
2930         pa_tagstruct_getu32(t, &length) < 0) {
2931         protocol_error(c);
2932         return;
2933     }
2934
2935     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2936     CHECK_VALIDITY(c->pstream, pa_sample_spec_valid(&ss), tag, PA_ERR_INVALID);
2937     CHECK_VALIDITY(c->pstream, pa_channel_map_valid(&map), tag, PA_ERR_INVALID);
2938     CHECK_VALIDITY(c->pstream, map.channels == ss.channels, tag, PA_ERR_INVALID);
2939     CHECK_VALIDITY(c->pstream, (length % pa_frame_size(&ss)) == 0 && length > 0, tag, PA_ERR_INVALID);
2940     CHECK_VALIDITY(c->pstream, length <= PA_SCACHE_ENTRY_SIZE_MAX, tag, PA_ERR_TOOLARGE);
2941
2942     p = pa_proplist_new();
2943
2944     if ((c->version >= 13 && pa_tagstruct_get_proplist(t, p) < 0) ||
2945         !pa_tagstruct_eof(t)) {
2946
2947         protocol_error(c);
2948         pa_proplist_free(p);
2949         return;
2950     }
2951
2952     if (c->version < 13)
2953         pa_proplist_sets(p, PA_PROP_MEDIA_NAME, name);
2954     else if (!name)
2955         if (!(name = pa_proplist_gets(p, PA_PROP_EVENT_ID)))
2956             name = pa_proplist_gets(p, PA_PROP_MEDIA_NAME);
2957
2958     if (!name || !pa_namereg_is_valid_name(name)) {
2959         pa_proplist_free(p);
2960         CHECK_VALIDITY(c->pstream, false, tag, PA_ERR_INVALID);
2961     }
2962
2963     s = upload_stream_new(c, &ss, &map, name, length, p);
2964     pa_proplist_free(p);
2965
2966     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_INVALID);
2967
2968     reply = reply_new(tag);
2969     pa_tagstruct_putu32(reply, s->index);
2970     pa_tagstruct_putu32(reply, length);
2971     pa_pstream_send_tagstruct(c->pstream, reply);
2972 }
2973
2974 static void command_finish_upload_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2975     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
2976     uint32_t channel;
2977     upload_stream *s;
2978     uint32_t idx;
2979
2980     pa_native_connection_assert_ref(c);
2981     pa_assert(t);
2982
2983     if (pa_tagstruct_getu32(t, &channel) < 0 ||
2984         !pa_tagstruct_eof(t)) {
2985         protocol_error(c);
2986         return;
2987     }
2988
2989     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2990
2991     s = pa_idxset_get_by_index(c->output_streams, channel);
2992     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2993     CHECK_VALIDITY(c->pstream, upload_stream_isinstance(s), tag, PA_ERR_NOENTITY);
2994
2995     if (!s->memchunk.memblock)
2996         pa_pstream_send_error(c->pstream, tag, PA_ERR_TOOLARGE);
2997     else if (pa_scache_add_item(c->protocol->core, s->name, &s->sample_spec, &s->channel_map, &s->memchunk, s->proplist, &idx) < 0)
2998         pa_pstream_send_error(c->pstream, tag, PA_ERR_INTERNAL);
2999     else
3000         pa_pstream_send_simple_ack(c->pstream, tag);
3001
3002     upload_stream_unlink(s);
3003 }
3004
3005 static void command_play_sample(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3006     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
3007     uint32_t sink_index;
3008     pa_volume_t volume;
3009     pa_sink *sink;
3010     const char *name, *sink_name;
3011     uint32_t idx;
3012     pa_proplist *p;
3013     pa_tagstruct *reply;
3014
3015     pa_native_connection_assert_ref(c);
3016     pa_assert(t);
3017
3018     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3019
3020     if (pa_tagstruct_getu32(t, &sink_index) < 0 ||
3021         pa_tagstruct_gets(t, &sink_name) < 0 ||
3022         pa_tagstruct_getu32(t, &volume) < 0 ||
3023         pa_tagstruct_gets(t, &name) < 0) {
3024         protocol_error(c);
3025         return;
3026     }
3027
3028     CHECK_VALIDITY(c->pstream, !sink_name || pa_namereg_is_valid_name_or_wildcard(sink_name, PA_NAMEREG_SINK), tag, PA_ERR_INVALID);
3029     CHECK_VALIDITY(c->pstream, sink_index == PA_INVALID_INDEX || !sink_name, tag, PA_ERR_INVALID);
3030     CHECK_VALIDITY(c->pstream, !sink_name || sink_index == PA_INVALID_INDEX, tag, PA_ERR_INVALID);
3031     CHECK_VALIDITY(c->pstream, name && pa_namereg_is_valid_name(name), tag, PA_ERR_INVALID);
3032
3033     if (sink_index != PA_INVALID_INDEX)
3034         sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
3035     else
3036         sink = pa_namereg_get(c->protocol->core, sink_name, PA_NAMEREG_SINK);
3037
3038     CHECK_VALIDITY(c->pstream, sink, tag, PA_ERR_NOENTITY);
3039
3040     p = pa_proplist_new();
3041
3042     if ((c->version >= 13 && pa_tagstruct_get_proplist(t, p) < 0) ||
3043         !pa_tagstruct_eof(t)) {
3044         protocol_error(c);
3045         pa_proplist_free(p);
3046         return;
3047     }
3048
3049     pa_proplist_update(p, PA_UPDATE_MERGE, c->client->proplist);
3050
3051     if (pa_scache_play_item(c->protocol->core, name, sink, volume, p, &idx) < 0) {
3052         pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
3053         pa_proplist_free(p);
3054         return;
3055     }
3056
3057     pa_proplist_free(p);
3058
3059     reply = reply_new(tag);
3060
3061     if (c->version >= 13)
3062         pa_tagstruct_putu32(reply, idx);
3063
3064     pa_pstream_send_tagstruct(c->pstream, reply);
3065 }
3066
3067 static void command_remove_sample(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3068     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
3069     const char *name;
3070
3071     pa_native_connection_assert_ref(c);
3072     pa_assert(t);
3073
3074     if (pa_tagstruct_gets(t, &name) < 0 ||
3075         !pa_tagstruct_eof(t)) {
3076         protocol_error(c);
3077         return;
3078     }
3079
3080     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3081     CHECK_VALIDITY(c->pstream, name && pa_namereg_is_valid_name(name), tag, PA_ERR_INVALID);
3082
3083     if (pa_scache_remove_item(c->protocol->core, name) < 0) {
3084         pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
3085         return;
3086     }
3087
3088     pa_pstream_send_simple_ack(c->pstream, tag);
3089 }
3090
3091 static void fixup_sample_spec(pa_native_connection *c, pa_sample_spec *fixed, const pa_sample_spec *original) {
3092     pa_assert(c);
3093     pa_assert(fixed);
3094     pa_assert(original);
3095
3096     *fixed = *original;
3097
3098     if (c->version < 12) {
3099         /* Before protocol version 12 we didn't support S32 samples,
3100          * so we need to lie about this to the client */
3101
3102         if (fixed->format == PA_SAMPLE_S32LE)
3103             fixed->format = PA_SAMPLE_FLOAT32LE;
3104         if (fixed->format == PA_SAMPLE_S32BE)
3105             fixed->format = PA_SAMPLE_FLOAT32BE;
3106     }
3107
3108     if (c->version < 15) {
3109         if (fixed->format == PA_SAMPLE_S24LE || fixed->format == PA_SAMPLE_S24_32LE)
3110             fixed->format = PA_SAMPLE_FLOAT32LE;
3111         if (fixed->format == PA_SAMPLE_S24BE || fixed->format == PA_SAMPLE_S24_32BE)
3112             fixed->format = PA_SAMPLE_FLOAT32BE;
3113     }
3114 }
3115
3116 static void sink_fill_tagstruct(pa_native_connection *c, pa_tagstruct *t, pa_sink *sink) {
3117     pa_sample_spec fixed_ss;
3118
3119     pa_assert(t);
3120     pa_sink_assert_ref(sink);
3121
3122     fixup_sample_spec(c, &fixed_ss, &sink->sample_spec);
3123
3124     pa_tagstruct_put(
3125         t,
3126         PA_TAG_U32, sink->index,
3127         PA_TAG_STRING, sink->name,
3128         PA_TAG_STRING, pa_strnull(pa_proplist_gets(sink->proplist, PA_PROP_DEVICE_DESCRIPTION)),
3129         PA_TAG_SAMPLE_SPEC, &fixed_ss,
3130         PA_TAG_CHANNEL_MAP, &sink->channel_map,
3131         PA_TAG_U32, sink->module ? sink->module->index : PA_INVALID_INDEX,
3132         PA_TAG_CVOLUME, pa_sink_get_volume(sink, false),
3133         PA_TAG_BOOLEAN, pa_sink_get_mute(sink, false),
3134         PA_TAG_U32, sink->monitor_source ? sink->monitor_source->index : PA_INVALID_INDEX,
3135         PA_TAG_STRING, sink->monitor_source ? sink->monitor_source->name : NULL,
3136         PA_TAG_USEC, pa_sink_get_latency(sink),
3137         PA_TAG_STRING, sink->driver,
3138         PA_TAG_U32, sink->flags & PA_SINK_CLIENT_FLAGS_MASK,
3139         PA_TAG_INVALID);
3140
3141     if (c->version >= 13) {
3142         pa_tagstruct_put_proplist(t, sink->proplist);
3143         pa_tagstruct_put_usec(t, pa_sink_get_requested_latency(sink));
3144     }
3145
3146     if (c->version >= 15) {
3147         pa_tagstruct_put_volume(t, sink->base_volume);
3148         if (PA_UNLIKELY(pa_sink_get_state(sink) == PA_SINK_INVALID_STATE))
3149             pa_log_error("Internal sink state is invalid.");
3150         pa_tagstruct_putu32(t, pa_sink_get_state(sink));
3151         pa_tagstruct_putu32(t, sink->n_volume_steps);
3152         pa_tagstruct_putu32(t, sink->card ? sink->card->index : PA_INVALID_INDEX);
3153     }
3154
3155     if (c->version >= 16) {
3156         void *state;
3157         pa_device_port *p;
3158
3159         pa_tagstruct_putu32(t, pa_hashmap_size(sink->ports));
3160
3161         PA_HASHMAP_FOREACH(p, sink->ports, state) {
3162             pa_tagstruct_puts(t, p->name);
3163             pa_tagstruct_puts(t, p->description);
3164             pa_tagstruct_putu32(t, p->priority);
3165             if (c->version >= 24)
3166                 pa_tagstruct_putu32(t, p->available);
3167         }
3168
3169         pa_tagstruct_puts(t, sink->active_port ? sink->active_port->name : NULL);
3170     }
3171
3172     if (c->version >= 21) {
3173         uint32_t i;
3174         pa_format_info *f;
3175         pa_idxset *formats = pa_sink_get_formats(sink);
3176
3177         pa_tagstruct_putu8(t, (uint8_t) pa_idxset_size(formats));
3178         PA_IDXSET_FOREACH(f, formats, i) {
3179             pa_tagstruct_put_format_info(t, f);
3180         }
3181
3182         pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
3183     }
3184 }
3185
3186 static void source_fill_tagstruct(pa_native_connection *c, pa_tagstruct *t, pa_source *source) {
3187     pa_sample_spec fixed_ss;
3188
3189     pa_assert(t);
3190     pa_source_assert_ref(source);
3191
3192     fixup_sample_spec(c, &fixed_ss, &source->sample_spec);
3193
3194     pa_tagstruct_put(
3195         t,
3196         PA_TAG_U32, source->index,
3197         PA_TAG_STRING, source->name,
3198         PA_TAG_STRING, pa_strnull(pa_proplist_gets(source->proplist, PA_PROP_DEVICE_DESCRIPTION)),
3199         PA_TAG_SAMPLE_SPEC, &fixed_ss,
3200         PA_TAG_CHANNEL_MAP, &source->channel_map,
3201         PA_TAG_U32, source->module ? source->module->index : PA_INVALID_INDEX,
3202         PA_TAG_CVOLUME, pa_source_get_volume(source, false),
3203         PA_TAG_BOOLEAN, pa_source_get_mute(source, false),
3204         PA_TAG_U32, source->monitor_of ? source->monitor_of->index : PA_INVALID_INDEX,
3205         PA_TAG_STRING, source->monitor_of ? source->monitor_of->name : NULL,
3206         PA_TAG_USEC, pa_source_get_latency(source),
3207         PA_TAG_STRING, source->driver,
3208         PA_TAG_U32, source->flags & PA_SOURCE_CLIENT_FLAGS_MASK,
3209         PA_TAG_INVALID);
3210
3211     if (c->version >= 13) {
3212         pa_tagstruct_put_proplist(t, source->proplist);
3213         pa_tagstruct_put_usec(t, pa_source_get_requested_latency(source));
3214     }
3215
3216     if (c->version >= 15) {
3217         pa_tagstruct_put_volume(t, source->base_volume);
3218         if (PA_UNLIKELY(pa_source_get_state(source) == PA_SOURCE_INVALID_STATE))
3219             pa_log_error("Internal source state is invalid.");
3220         pa_tagstruct_putu32(t, pa_source_get_state(source));
3221         pa_tagstruct_putu32(t, source->n_volume_steps);
3222         pa_tagstruct_putu32(t, source->card ? source->card->index : PA_INVALID_INDEX);
3223     }
3224
3225     if (c->version >= 16) {
3226         void *state;
3227         pa_device_port *p;
3228
3229         pa_tagstruct_putu32(t, pa_hashmap_size(source->ports));
3230
3231         PA_HASHMAP_FOREACH(p, source->ports, state) {
3232             pa_tagstruct_puts(t, p->name);
3233             pa_tagstruct_puts(t, p->description);
3234             pa_tagstruct_putu32(t, p->priority);
3235             if (c->version >= 24)
3236                 pa_tagstruct_putu32(t, p->available);
3237         }
3238
3239         pa_tagstruct_puts(t, source->active_port ? source->active_port->name : NULL);
3240     }
3241
3242     if (c->version >= 22) {
3243         uint32_t i;
3244         pa_format_info *f;
3245         pa_idxset *formats = pa_source_get_formats(source);
3246
3247         pa_tagstruct_putu8(t, (uint8_t) pa_idxset_size(formats));
3248         PA_IDXSET_FOREACH(f, formats, i) {
3249             pa_tagstruct_put_format_info(t, f);
3250         }
3251
3252         pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
3253     }
3254 }
3255
3256 static void client_fill_tagstruct(pa_native_connection *c, pa_tagstruct *t, pa_client *client) {
3257     pa_assert(t);
3258     pa_assert(client);
3259
3260     pa_tagstruct_putu32(t, client->index);
3261     pa_tagstruct_puts(t, pa_strnull(pa_proplist_gets(client->proplist, PA_PROP_APPLICATION_NAME)));
3262     pa_tagstruct_putu32(t, client->module ? client->module->index : PA_INVALID_INDEX);
3263     pa_tagstruct_puts(t, client->driver);
3264
3265     if (c->version >= 13)
3266         pa_tagstruct_put_proplist(t, client->proplist);
3267 }
3268
3269 static void card_fill_tagstruct(pa_native_connection *c, pa_tagstruct *t, pa_card *card) {
3270     void *state = NULL;
3271     pa_card_profile *p;
3272     pa_device_port *port;
3273
3274     pa_assert(t);
3275     pa_assert(card);
3276
3277     pa_tagstruct_putu32(t, card->index);
3278     pa_tagstruct_puts(t, card->name);
3279     pa_tagstruct_putu32(t, card->module ? card->module->index : PA_INVALID_INDEX);
3280     pa_tagstruct_puts(t, card->driver);
3281
3282     pa_tagstruct_putu32(t, pa_hashmap_size(card->profiles));
3283
3284     PA_HASHMAP_FOREACH(p, card->profiles, state) {
3285         pa_tagstruct_puts(t, p->name);
3286         pa_tagstruct_puts(t, p->description);
3287         pa_tagstruct_putu32(t, p->n_sinks);
3288         pa_tagstruct_putu32(t, p->n_sources);
3289         pa_tagstruct_putu32(t, p->priority);
3290
3291         if (c->version >= 29)
3292             pa_tagstruct_putu32(t, (p->available != PA_AVAILABLE_NO));
3293     }
3294
3295     pa_tagstruct_puts(t, card->active_profile->name);
3296     pa_tagstruct_put_proplist(t, card->proplist);
3297
3298     if (c->version < 26)
3299         return;
3300
3301     pa_tagstruct_putu32(t, pa_hashmap_size(card->ports));
3302
3303     PA_HASHMAP_FOREACH(port, card->ports, state) {
3304         void *state2;
3305
3306         pa_tagstruct_puts(t, port->name);
3307         pa_tagstruct_puts(t, port->description);
3308         pa_tagstruct_putu32(t, port->priority);
3309         pa_tagstruct_putu32(t, port->available);
3310         pa_tagstruct_putu8(t, port->direction);
3311         pa_tagstruct_put_proplist(t, port->proplist);
3312
3313         pa_tagstruct_putu32(t, pa_hashmap_size(port->profiles));
3314
3315         PA_HASHMAP_FOREACH(p, port->profiles, state2)
3316             pa_tagstruct_puts(t, p->name);
3317
3318         if (c->version >= 27)
3319             pa_tagstruct_puts64(t, port->latency_offset);
3320     }
3321 }
3322
3323 static void module_fill_tagstruct(pa_native_connection *c, pa_tagstruct *t, pa_module *module) {
3324     pa_assert(t);
3325     pa_assert(module);
3326
3327     pa_tagstruct_putu32(t, module->index);
3328     pa_tagstruct_puts(t, module->name);
3329     pa_tagstruct_puts(t, module->argument);
3330     pa_tagstruct_putu32(t, (uint32_t) pa_module_get_n_used(module));
3331
3332     if (c->version < 15)
3333         pa_tagstruct_put_boolean(t, false); /* autoload is obsolete */
3334
3335     if (c->version >= 15)
3336         pa_tagstruct_put_proplist(t, module->proplist);
3337 }
3338
3339 static void sink_input_fill_tagstruct(pa_native_connection *c, pa_tagstruct *t, pa_sink_input *s) {
3340     pa_sample_spec fixed_ss;
3341     pa_usec_t sink_latency;
3342     pa_cvolume v;
3343     bool has_volume = false;
3344
3345     pa_assert(t);
3346     pa_sink_input_assert_ref(s);
3347
3348     fixup_sample_spec(c, &fixed_ss, &s->sample_spec);
3349
3350     has_volume = pa_sink_input_is_volume_readable(s);
3351     if (has_volume)
3352         pa_sink_input_get_volume(s, &v, true);
3353     else
3354         pa_cvolume_reset(&v, fixed_ss.channels);
3355
3356     pa_tagstruct_putu32(t, s->index);
3357     pa_tagstruct_puts(t, pa_strnull(pa_proplist_gets(s->proplist, PA_PROP_MEDIA_NAME)));
3358     pa_tagstruct_putu32(t, s->module ? s->module->index : PA_INVALID_INDEX);
3359     pa_tagstruct_putu32(t, s->client ? s->client->index : PA_INVALID_INDEX);
3360     pa_tagstruct_putu32(t, s->sink->index);
3361     pa_tagstruct_put_sample_spec(t, &fixed_ss);
3362     pa_tagstruct_put_channel_map(t, &s->channel_map);
3363     pa_tagstruct_put_cvolume(t, &v);
3364     pa_tagstruct_put_usec(t, pa_sink_input_get_latency(s, &sink_latency));
3365     pa_tagstruct_put_usec(t, sink_latency);
3366     pa_tagstruct_puts(t, pa_resample_method_to_string(pa_sink_input_get_resample_method(s)));
3367     pa_tagstruct_puts(t, s->driver);
3368     if (c->version >= 11)
3369         pa_tagstruct_put_boolean(t, pa_sink_input_get_mute(s));
3370     if (c->version >= 13)
3371         pa_tagstruct_put_proplist(t, s->proplist);
3372     if (c->version >= 19)
3373         pa_tagstruct_put_boolean(t, (pa_sink_input_get_state(s) == PA_SINK_INPUT_CORKED));
3374     if (c->version >= 20) {
3375         pa_tagstruct_put_boolean(t, has_volume);
3376         pa_tagstruct_put_boolean(t, s->volume_writable);
3377     }
3378     if (c->version >= 21)
3379         pa_tagstruct_put_format_info(t, s->format);
3380 }
3381
3382 static void source_output_fill_tagstruct(pa_native_connection *c, pa_tagstruct *t, pa_source_output *s) {
3383     pa_sample_spec fixed_ss;
3384     pa_usec_t source_latency;
3385     pa_cvolume v;
3386     bool has_volume = false;
3387
3388     pa_assert(t);
3389     pa_source_output_assert_ref(s);
3390
3391     fixup_sample_spec(c, &fixed_ss, &s->sample_spec);
3392
3393     has_volume = pa_source_output_is_volume_readable(s);
3394     if (has_volume)
3395         pa_source_output_get_volume(s, &v, true);
3396     else
3397         pa_cvolume_reset(&v, fixed_ss.channels);
3398
3399     pa_tagstruct_putu32(t, s->index);
3400     pa_tagstruct_puts(t, pa_strnull(pa_proplist_gets(s->proplist, PA_PROP_MEDIA_NAME)));
3401     pa_tagstruct_putu32(t, s->module ? s->module->index : PA_INVALID_INDEX);
3402     pa_tagstruct_putu32(t, s->client ? s->client->index : PA_INVALID_INDEX);
3403     pa_tagstruct_putu32(t, s->source->index);
3404     pa_tagstruct_put_sample_spec(t, &fixed_ss);
3405     pa_tagstruct_put_channel_map(t, &s->channel_map);
3406     pa_tagstruct_put_usec(t, pa_source_output_get_latency(s, &source_latency));
3407     pa_tagstruct_put_usec(t, source_latency);
3408     pa_tagstruct_puts(t, pa_resample_method_to_string(pa_source_output_get_resample_method(s)));
3409     pa_tagstruct_puts(t, s->driver);
3410     if (c->version >= 13)
3411         pa_tagstruct_put_proplist(t, s->proplist);
3412     if (c->version >= 19)
3413         pa_tagstruct_put_boolean(t, (pa_source_output_get_state(s) == PA_SOURCE_OUTPUT_CORKED));
3414     if (c->version >= 22) {
3415         pa_tagstruct_put_cvolume(t, &v);
3416         pa_tagstruct_put_boolean(t, pa_source_output_get_mute(s));
3417         pa_tagstruct_put_boolean(t, has_volume);
3418         pa_tagstruct_put_boolean(t, s->volume_writable);
3419         pa_tagstruct_put_format_info(t, s->format);
3420     }
3421 }
3422
3423 static void scache_fill_tagstruct(pa_native_connection *c, pa_tagstruct *t, pa_scache_entry *e) {
3424     pa_sample_spec fixed_ss;
3425     pa_cvolume v;
3426
3427     pa_assert(t);
3428     pa_assert(e);
3429
3430     if (e->memchunk.memblock)
3431         fixup_sample_spec(c, &fixed_ss, &e->sample_spec);
3432     else
3433         memset(&fixed_ss, 0, sizeof(fixed_ss));
3434
3435     pa_tagstruct_putu32(t, e->index);
3436     pa_tagstruct_puts(t, e->name);
3437
3438     if (e->volume_is_set)
3439         v = e->volume;
3440     else
3441         pa_cvolume_init(&v);
3442
3443     pa_tagstruct_put_cvolume(t, &v);
3444     pa_tagstruct_put_usec(t, e->memchunk.memblock ? pa_bytes_to_usec(e->memchunk.length, &e->sample_spec) : 0);
3445     pa_tagstruct_put_sample_spec(t, &fixed_ss);
3446     pa_tagstruct_put_channel_map(t, &e->channel_map);
3447     pa_tagstruct_putu32(t, (uint32_t) e->memchunk.length);
3448     pa_tagstruct_put_boolean(t, e->lazy);
3449     pa_tagstruct_puts(t, e->filename);
3450
3451     if (c->version >= 13)
3452         pa_tagstruct_put_proplist(t, e->proplist);
3453 }
3454
3455 static void command_get_info(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3456     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
3457     uint32_t idx;
3458     pa_sink *sink = NULL;
3459     pa_source *source = NULL;
3460     pa_client *client = NULL;
3461     pa_card *card = NULL;
3462     pa_module *module = NULL;
3463     pa_sink_input *si = NULL;
3464     pa_source_output *so = NULL;
3465     pa_scache_entry *sce = NULL;
3466     const char *name = NULL;
3467     pa_tagstruct *reply;
3468
3469     pa_native_connection_assert_ref(c);
3470     pa_assert(t);
3471
3472     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3473         (command != PA_COMMAND_GET_CLIENT_INFO &&
3474          command != PA_COMMAND_GET_MODULE_INFO &&
3475          command != PA_COMMAND_GET_SINK_INPUT_INFO &&
3476          command != PA_COMMAND_GET_SOURCE_OUTPUT_INFO &&
3477          pa_tagstruct_gets(t, &name) < 0) ||
3478         !pa_tagstruct_eof(t)) {
3479         protocol_error(c);
3480         return;
3481     }
3482
3483     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3484     CHECK_VALIDITY(c->pstream, !name ||
3485                    (command == PA_COMMAND_GET_SINK_INFO &&
3486                     pa_namereg_is_valid_name_or_wildcard(name, PA_NAMEREG_SINK)) ||
3487                    (command == PA_COMMAND_GET_SOURCE_INFO &&
3488                     pa_namereg_is_valid_name_or_wildcard(name, PA_NAMEREG_SOURCE)) ||
3489                    pa_namereg_is_valid_name(name), tag, PA_ERR_INVALID);
3490     CHECK_VALIDITY(c->pstream, command == PA_COMMAND_GET_SINK_INFO ||
3491                    command == PA_COMMAND_GET_SOURCE_INFO ||
3492                    (idx != PA_INVALID_INDEX || name), tag, PA_ERR_INVALID);
3493     CHECK_VALIDITY(c->pstream, idx == PA_INVALID_INDEX || !name, tag, PA_ERR_INVALID);
3494
3495     if (command == PA_COMMAND_GET_SINK_INFO) {
3496         if (idx != PA_INVALID_INDEX)
3497             sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx);
3498         else
3499             sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK);
3500     } else if (command == PA_COMMAND_GET_SOURCE_INFO) {
3501         if (idx != PA_INVALID_INDEX)
3502             source = pa_idxset_get_by_index(c->protocol->core->sources, idx);
3503         else
3504             source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE);
3505     } else if (command == PA_COMMAND_GET_CARD_INFO) {
3506         if (idx != PA_INVALID_INDEX)
3507             card = pa_idxset_get_by_index(c->protocol->core->cards, idx);
3508         else
3509             card = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_CARD);
3510     } else if (command == PA_COMMAND_GET_CLIENT_INFO)
3511         client = pa_idxset_get_by_index(c->protocol->core->clients, idx);
3512     else if (command == PA_COMMAND_GET_MODULE_INFO)
3513         module = pa_idxset_get_by_index(c->protocol->core->modules, idx);
3514     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO)
3515         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, idx);
3516     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO)
3517         so = pa_idxset_get_by_index(c->protocol->core->source_outputs, idx);
3518     else {
3519         pa_assert(command == PA_COMMAND_GET_SAMPLE_INFO);
3520         if (idx != PA_INVALID_INDEX)
3521             sce = pa_idxset_get_by_index(c->protocol->core->scache, idx);
3522         else
3523             sce = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SAMPLE);
3524     }
3525
3526     if (!sink && !source && !client && !card && !module && !si && !so && !sce) {
3527         pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
3528         return;
3529     }
3530
3531     reply = reply_new(tag);
3532     if (sink)
3533         sink_fill_tagstruct(c, reply, sink);
3534     else if (source)
3535         source_fill_tagstruct(c, reply, source);
3536     else if (client)
3537         client_fill_tagstruct(c, reply, client);
3538     else if (card)
3539         card_fill_tagstruct(c, reply, card);
3540     else if (module)
3541         module_fill_tagstruct(c, reply, module);
3542     else if (si)
3543         sink_input_fill_tagstruct(c, reply, si);
3544     else if (so)
3545         source_output_fill_tagstruct(c, reply, so);
3546     else
3547         scache_fill_tagstruct(c, reply, sce);
3548     pa_pstream_send_tagstruct(c->pstream, reply);
3549 }
3550
3551 static void command_get_info_list(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3552     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
3553     pa_idxset *i;
3554     uint32_t idx;
3555     void *p;
3556     pa_tagstruct *reply;
3557
3558     pa_native_connection_assert_ref(c);
3559     pa_assert(t);
3560
3561     if (!pa_tagstruct_eof(t)) {
3562         protocol_error(c);
3563         return;
3564     }
3565
3566     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3567
3568     reply = reply_new(tag);
3569
3570     if (command == PA_COMMAND_GET_SINK_INFO_LIST)
3571         i = c->protocol->core->sinks;
3572     else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
3573         i = c->protocol->core->sources;
3574     else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
3575         i = c->protocol->core->clients;
3576     else if (command == PA_COMMAND_GET_CARD_INFO_LIST)
3577         i = c->protocol->core->cards;
3578     else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
3579         i = c->protocol->core->modules;
3580     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
3581         i = c->protocol->core->sink_inputs;
3582     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
3583         i = c->protocol->core->source_outputs;
3584     else {
3585         pa_assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
3586         i = c->protocol->core->scache;
3587     }
3588
3589     if (i) {
3590         PA_IDXSET_FOREACH(p, i, idx) {
3591             if (command == PA_COMMAND_GET_SINK_INFO_LIST) {
3592                 if (PA_SINK_IS_LINKED(((pa_sink *)p)->state))
3593                     sink_fill_tagstruct(c, reply, p);
3594             } else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST) {
3595                 if (PA_SOURCE_IS_LINKED(((pa_source *)p)->state))
3596                     source_fill_tagstruct(c, reply, p);
3597             } else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
3598                 client_fill_tagstruct(c, reply, p);
3599             else if (command == PA_COMMAND_GET_CARD_INFO_LIST)
3600                 card_fill_tagstruct(c, reply, p);
3601             else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
3602                 module_fill_tagstruct(c, reply, p);
3603             else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
3604                 sink_input_fill_tagstruct(c, reply, p);
3605             else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
3606                 source_output_fill_tagstruct(c, reply, p);
3607             else {
3608                 pa_assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
3609                 scache_fill_tagstruct(c, reply, p);
3610             }
3611         }
3612     }
3613
3614     pa_pstream_send_tagstruct(c->pstream, reply);
3615 }
3616
3617 static void command_get_server_info(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3618     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
3619     pa_tagstruct *reply;
3620     pa_sink *def_sink;
3621     pa_source *def_source;
3622     pa_sample_spec fixed_ss;
3623     char *h, *u;
3624
3625     pa_native_connection_assert_ref(c);
3626     pa_assert(t);
3627
3628     if (!pa_tagstruct_eof(t)) {
3629         protocol_error(c);
3630         return;
3631     }
3632
3633     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3634
3635     reply = reply_new(tag);
3636     pa_tagstruct_puts(reply, PACKAGE_NAME);
3637     pa_tagstruct_puts(reply, PACKAGE_VERSION);
3638
3639     u = pa_get_user_name_malloc();
3640     pa_tagstruct_puts(reply, u);
3641     pa_xfree(u);
3642
3643     h = pa_get_host_name_malloc();
3644     pa_tagstruct_puts(reply, h);
3645     pa_xfree(h);
3646
3647     fixup_sample_spec(c, &fixed_ss, &c->protocol->core->default_sample_spec);
3648     pa_tagstruct_put_sample_spec(reply, &fixed_ss);
3649
3650     def_sink = pa_namereg_get_default_sink(c->protocol->core);
3651     pa_tagstruct_puts(reply, def_sink ? def_sink->name : NULL);
3652     def_source = pa_namereg_get_default_source(c->protocol->core);
3653     pa_tagstruct_puts(reply, def_source ? def_source->name : NULL);
3654
3655     pa_tagstruct_putu32(reply, c->protocol->core->cookie);
3656
3657     if (c->version >= 15)
3658         pa_tagstruct_put_channel_map(reply, &c->protocol->core->default_channel_map);
3659
3660     pa_pstream_send_tagstruct(c->pstream, reply);
3661 }
3662
3663 static void subscription_cb(pa_core *core, pa_subscription_event_type_t e, uint32_t idx, void *userdata) {
3664     pa_tagstruct *t;
3665     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
3666
3667     pa_native_connection_assert_ref(c);
3668
3669     t = pa_tagstruct_new(NULL, 0);
3670     pa_tagstruct_putu32(t, PA_COMMAND_SUBSCRIBE_EVENT);
3671     pa_tagstruct_putu32(t, (uint32_t) -1);
3672     pa_tagstruct_putu32(t, e);
3673     pa_tagstruct_putu32(t, idx);
3674     pa_pstream_send_tagstruct(c->pstream, t);
3675 }
3676
3677 static void command_subscribe(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3678     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
3679     pa_subscription_mask_t m;
3680
3681     pa_native_connection_assert_ref(c);
3682     pa_assert(t);
3683
3684     if (pa_tagstruct_getu32(t, &m) < 0 ||
3685         !pa_tagstruct_eof(t)) {
3686         protocol_error(c);
3687         return;
3688     }
3689
3690     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3691     CHECK_VALIDITY(c->pstream, (m & ~PA_SUBSCRIPTION_MASK_ALL) == 0, tag, PA_ERR_INVALID);
3692
3693     if (c->subscription)
3694         pa_subscription_free(c->subscription);
3695
3696     if (m != 0) {
3697         c->subscription = pa_subscription_new(c->protocol->core, m, subscription_cb, c);
3698         pa_assert(c->subscription);
3699     } else
3700         c->subscription = NULL;
3701
3702     pa_pstream_send_simple_ack(c->pstream, tag);
3703 }
3704
3705 static void command_set_volume(
3706         pa_pdispatch *pd,
3707         uint32_t command,
3708         uint32_t tag,
3709         pa_tagstruct *t,
3710         void *userdata) {
3711
3712     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
3713     uint32_t idx;
3714     pa_cvolume volume;
3715     pa_sink *sink = NULL;
3716     pa_source *source = NULL;
3717     pa_sink_input *si = NULL;
3718     pa_source_output *so = NULL;
3719     const char *name = NULL;
3720     const char *client_name;
3721
3722     pa_native_connection_assert_ref(c);
3723     pa_assert(t);
3724
3725     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3726         (command == PA_COMMAND_SET_SINK_VOLUME && pa_tagstruct_gets(t, &name) < 0) ||
3727         (command == PA_COMMAND_SET_SOURCE_VOLUME && pa_tagstruct_gets(t, &name) < 0) ||
3728         pa_tagstruct_get_cvolume(t, &volume) ||
3729         !pa_tagstruct_eof(t)) {
3730         protocol_error(c);
3731         return;
3732     }
3733
3734     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3735     CHECK_VALIDITY(c->pstream, !name || pa_namereg_is_valid_name_or_wildcard(name, command == PA_COMMAND_SET_SINK_VOLUME ? PA_NAMEREG_SINK : PA_NAMEREG_SOURCE), tag, PA_ERR_INVALID);
3736     CHECK_VALIDITY(c->pstream, (idx != PA_INVALID_INDEX) ^ (name != NULL), tag, PA_ERR_INVALID);
3737     CHECK_VALIDITY(c->pstream, pa_cvolume_valid(&volume), tag, PA_ERR_INVALID);
3738
3739     switch (command) {
3740
3741         case PA_COMMAND_SET_SINK_VOLUME:
3742             if (idx != PA_INVALID_INDEX)
3743                 sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx);
3744             else
3745                 sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK);
3746             break;
3747
3748         case PA_COMMAND_SET_SOURCE_VOLUME:
3749             if (idx != PA_INVALID_INDEX)
3750                 source = pa_idxset_get_by_index(c->protocol->core->sources, idx);
3751             else
3752                 source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE);
3753             break;
3754
3755         case PA_COMMAND_SET_SINK_INPUT_VOLUME:
3756             si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, idx);
3757             break;
3758
3759         case PA_COMMAND_SET_SOURCE_OUTPUT_VOLUME:
3760             so = pa_idxset_get_by_index(c->protocol->core->source_outputs, idx);
3761             break;
3762
3763         default:
3764             pa_assert_not_reached();
3765     }
3766
3767     CHECK_VALIDITY(c->pstream, si || so || sink || source, tag, PA_ERR_NOENTITY);
3768
3769     client_name = pa_strnull(pa_proplist_gets(c->client->proplist, PA_PROP_APPLICATION_PROCESS_BINARY));
3770
3771     if (sink) {
3772         CHECK_VALIDITY(c->pstream, volume.channels == 1 || pa_cvolume_compatible(&volume, &sink->sample_spec), tag, PA_ERR_INVALID);
3773
3774         pa_log_debug("Client %s changes volume of sink %s.", client_name, sink->name);
3775         pa_sink_set_volume(sink, &volume, true, true);
3776     } else if (source) {
3777         CHECK_VALIDITY(c->pstream, volume.channels == 1 || pa_cvolume_compatible(&volume, &source->sample_spec), tag, PA_ERR_INVALID);
3778
3779         pa_log_debug("Client %s changes volume of source %s.", client_name, source->name);
3780         pa_source_set_volume(source, &volume, true, true);
3781     } else if (si) {
3782         CHECK_VALIDITY(c->pstream, si->volume_writable, tag, PA_ERR_BADSTATE);
3783         CHECK_VALIDITY(c->pstream, volume.channels == 1 || pa_cvolume_compatible(&volume, &si->sample_spec), tag, PA_ERR_INVALID);
3784
3785         pa_log_debug("Client %s changes volume of sink input %s.",
3786                      client_name,
3787                      pa_strnull(pa_proplist_gets(si->proplist, PA_PROP_MEDIA_NAME)));
3788         pa_sink_input_set_volume(si, &volume, true, true);
3789     } else if (so) {
3790         CHECK_VALIDITY(c->pstream, so->volume_writable, tag, PA_ERR_BADSTATE);
3791         CHECK_VALIDITY(c->pstream, volume.channels == 1 || pa_cvolume_compatible(&volume, &so->sample_spec), tag, PA_ERR_INVALID);
3792
3793         pa_log_debug("Client %s changes volume of source output %s.",
3794                      client_name,
3795                      pa_strnull(pa_proplist_gets(so->proplist, PA_PROP_MEDIA_NAME)));
3796         pa_source_output_set_volume(so, &volume, true, true);
3797     }
3798
3799     pa_pstream_send_simple_ack(c->pstream, tag);
3800 }
3801
3802 static void command_set_mute(
3803         pa_pdispatch *pd,
3804         uint32_t command,
3805         uint32_t tag,
3806         pa_tagstruct *t,
3807         void *userdata) {
3808
3809     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
3810     uint32_t idx;
3811     bool mute;
3812     pa_sink *sink = NULL;
3813     pa_source *source = NULL;
3814     pa_sink_input *si = NULL;
3815     pa_source_output *so = NULL;
3816     const char *name = NULL, *client_name;
3817
3818     pa_native_connection_assert_ref(c);
3819     pa_assert(t);
3820
3821     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3822         (command == PA_COMMAND_SET_SINK_MUTE && pa_tagstruct_gets(t, &name) < 0) ||
3823         (command == PA_COMMAND_SET_SOURCE_MUTE && pa_tagstruct_gets(t, &name) < 0) ||
3824         pa_tagstruct_get_boolean(t, &mute) ||
3825         !pa_tagstruct_eof(t)) {
3826         protocol_error(c);
3827         return;
3828     }
3829
3830     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3831     CHECK_VALIDITY(c->pstream, !name || pa_namereg_is_valid_name_or_wildcard(name, command == PA_COMMAND_SET_SINK_MUTE ? PA_NAMEREG_SINK : PA_NAMEREG_SOURCE), tag, PA_ERR_INVALID);
3832     CHECK_VALIDITY(c->pstream, (idx != PA_INVALID_INDEX) ^ (name != NULL), tag, PA_ERR_INVALID);
3833
3834     switch (command) {
3835
3836         case PA_COMMAND_SET_SINK_MUTE:
3837             if (idx != PA_INVALID_INDEX)
3838                 sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx);
3839             else
3840                 sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK);
3841
3842             break;
3843
3844         case PA_COMMAND_SET_SOURCE_MUTE:
3845             if (idx != PA_INVALID_INDEX)
3846                 source = pa_idxset_get_by_index(c->protocol->core->sources, idx);
3847             else
3848                 source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE);
3849
3850             break;
3851
3852         case PA_COMMAND_SET_SINK_INPUT_MUTE:
3853             si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, idx);
3854             break;
3855
3856         case PA_COMMAND_SET_SOURCE_OUTPUT_MUTE:
3857             so = pa_idxset_get_by_index(c->protocol->core->source_outputs, idx);
3858             break;
3859
3860         default:
3861             pa_assert_not_reached();
3862     }
3863
3864     CHECK_VALIDITY(c->pstream, si || so || sink || source, tag, PA_ERR_NOENTITY);
3865
3866     client_name = pa_strnull(pa_proplist_gets(c->client->proplist, PA_PROP_APPLICATION_PROCESS_BINARY));
3867
3868     if (sink) {
3869         pa_log_debug("Client %s changes mute of sink %s.", client_name, sink->name);
3870         pa_sink_set_mute(sink, mute, true);
3871     } else if (source) {
3872         pa_log_debug("Client %s changes mute of source %s.", client_name, source->name);
3873         pa_source_set_mute(source, mute, true);
3874     } else if (si) {
3875         pa_log_debug("Client %s changes mute of sink input %s.",
3876                      client_name,
3877                      pa_strnull(pa_proplist_gets(si->proplist, PA_PROP_MEDIA_NAME)));
3878         pa_sink_input_set_mute(si, mute, true);
3879     } else if (so) {
3880         pa_log_debug("Client %s changes mute of source output %s.",
3881                      client_name,
3882                      pa_strnull(pa_proplist_gets(so->proplist, PA_PROP_MEDIA_NAME)));
3883         pa_source_output_set_mute(so, mute, true);
3884     }
3885
3886     pa_pstream_send_simple_ack(c->pstream, tag);
3887 }
3888
3889 static void command_cork_playback_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3890     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
3891     uint32_t idx;
3892     bool b;
3893     playback_stream *s;
3894
3895     pa_native_connection_assert_ref(c);
3896     pa_assert(t);
3897
3898     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3899         pa_tagstruct_get_boolean(t, &b) < 0 ||
3900         !pa_tagstruct_eof(t)) {
3901         protocol_error(c);
3902         return;
3903     }
3904
3905     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3906     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX, tag, PA_ERR_INVALID);
3907     s = pa_idxset_get_by_index(c->output_streams, idx);
3908     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3909     CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
3910
3911     pa_sink_input_cork(s->sink_input, b);
3912
3913     if (b)
3914         s->is_underrun = true;
3915
3916     pa_pstream_send_simple_ack(c->pstream, tag);
3917 }
3918
3919 static void command_trigger_or_flush_or_prebuf_playback_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3920     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
3921     uint32_t idx;
3922     playback_stream *s;
3923
3924     pa_native_connection_assert_ref(c);
3925     pa_assert(t);
3926
3927     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3928         !pa_tagstruct_eof(t)) {
3929         protocol_error(c);
3930         return;
3931     }
3932
3933     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3934     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX, tag, PA_ERR_INVALID);
3935     s = pa_idxset_get_by_index(c->output_streams, idx);
3936     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3937     CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
3938
3939     switch (command) {
3940         case PA_COMMAND_FLUSH_PLAYBACK_STREAM:
3941             pa_asyncmsgq_send(s->sink_input->sink->asyncmsgq, PA_MSGOBJECT(s->sink_input), SINK_INPUT_MESSAGE_FLUSH, NULL, 0, NULL);
3942             break;
3943
3944         case PA_COMMAND_PREBUF_PLAYBACK_STREAM:
3945             pa_asyncmsgq_send(s->sink_input->sink->asyncmsgq, PA_MSGOBJECT(s->sink_input), SINK_INPUT_MESSAGE_PREBUF_FORCE, NULL, 0, NULL);
3946             break;
3947
3948         case PA_COMMAND_TRIGGER_PLAYBACK_STREAM:
3949             pa_asyncmsgq_send(s->sink_input->sink->asyncmsgq, PA_MSGOBJECT(s->sink_input), SINK_INPUT_MESSAGE_TRIGGER, NULL, 0, NULL);
3950             break;
3951
3952         default:
3953             pa_assert_not_reached();
3954     }
3955
3956     pa_pstream_send_simple_ack(c->pstream, tag);
3957 }
3958
3959 static void command_cork_record_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3960     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
3961     uint32_t idx;
3962     record_stream *s;
3963     bool b;
3964
3965     pa_native_connection_assert_ref(c);
3966     pa_assert(t);
3967
3968     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3969         pa_tagstruct_get_boolean(t, &b) < 0 ||
3970         !pa_tagstruct_eof(t)) {
3971         protocol_error(c);
3972         return;
3973     }
3974
3975     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3976     s = pa_idxset_get_by_index(c->record_streams, idx);
3977     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3978
3979     pa_source_output_cork(s->source_output, b);
3980     pa_memblockq_prebuf_force(s->memblockq);
3981     pa_pstream_send_simple_ack(c->pstream, tag);
3982 }
3983
3984 static void command_flush_record_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3985     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
3986     uint32_t idx;
3987     record_stream *s;
3988
3989     pa_native_connection_assert_ref(c);
3990     pa_assert(t);
3991
3992     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3993         !pa_tagstruct_eof(t)) {
3994         protocol_error(c);
3995         return;
3996     }
3997
3998     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3999     s = pa_idxset_get_by_index(c->record_streams, idx);
4000     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
4001
4002     pa_memblockq_flush_read(s->memblockq);
4003     pa_pstream_send_simple_ack(c->pstream, tag);
4004 }
4005
4006 static void command_set_stream_buffer_attr(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
4007     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4008     uint32_t idx;
4009     pa_buffer_attr a;
4010     pa_tagstruct *reply;
4011
4012     pa_native_connection_assert_ref(c);
4013     pa_assert(t);
4014
4015     memset(&a, 0, sizeof(a));
4016
4017     if (pa_tagstruct_getu32(t, &idx) < 0) {
4018         protocol_error(c);
4019         return;
4020     }
4021
4022     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
4023
4024     if (command == PA_COMMAND_SET_PLAYBACK_STREAM_BUFFER_ATTR) {
4025         playback_stream *s;
4026         bool adjust_latency = false, early_requests = false;
4027
4028         s = pa_idxset_get_by_index(c->output_streams, idx);
4029         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
4030         CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
4031
4032         if (pa_tagstruct_get(
4033                     t,
4034                     PA_TAG_U32, &a.maxlength,
4035                     PA_TAG_U32, &a.tlength,
4036                     PA_TAG_U32, &a.prebuf,
4037                     PA_TAG_U32, &a.minreq,
4038                     PA_TAG_INVALID) < 0 ||
4039             (c->version >= 13 && pa_tagstruct_get_boolean(t, &adjust_latency) < 0) ||
4040             (c->version >= 14 && pa_tagstruct_get_boolean(t, &early_requests) < 0) ||
4041             !pa_tagstruct_eof(t)) {
4042             protocol_error(c);
4043             return;
4044         }
4045
4046         s->adjust_latency = adjust_latency;
4047         s->early_requests = early_requests;
4048         s->buffer_attr_req = a;
4049
4050         fix_playback_buffer_attr(s);
4051         pa_assert_se(pa_asyncmsgq_send(s->sink_input->sink->asyncmsgq, PA_MSGOBJECT(s->sink_input), SINK_INPUT_MESSAGE_UPDATE_BUFFER_ATTR, NULL, 0, NULL) == 0);
4052
4053         reply = reply_new(tag);
4054         pa_tagstruct_putu32(reply, s->buffer_attr.maxlength);
4055         pa_tagstruct_putu32(reply, s->buffer_attr.tlength);
4056         pa_tagstruct_putu32(reply, s->buffer_attr.prebuf);
4057         pa_tagstruct_putu32(reply, s->buffer_attr.minreq);
4058
4059         if (c->version >= 13)
4060             pa_tagstruct_put_usec(reply, s->configured_sink_latency);
4061
4062     } else {
4063         record_stream *s;
4064         bool adjust_latency = false, early_requests = false;
4065         pa_assert(command == PA_COMMAND_SET_RECORD_STREAM_BUFFER_ATTR);
4066
4067         s = pa_idxset_get_by_index(c->record_streams, idx);
4068         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
4069
4070         if (pa_tagstruct_get(
4071                     t,
4072                     PA_TAG_U32, &a.maxlength,
4073                     PA_TAG_U32, &a.fragsize,
4074                     PA_TAG_INVALID) < 0 ||
4075             (c->version >= 13 && pa_tagstruct_get_boolean(t, &adjust_latency) < 0) ||
4076             (c->version >= 14 && pa_tagstruct_get_boolean(t, &early_requests) < 0) ||
4077             !pa_tagstruct_eof(t)) {
4078             protocol_error(c);
4079             return;
4080         }
4081
4082         s->adjust_latency = adjust_latency;
4083         s->early_requests = early_requests;
4084         s->buffer_attr_req = a;
4085
4086         fix_record_buffer_attr_pre(s);
4087         pa_memblockq_set_maxlength(s->memblockq, s->buffer_attr.maxlength);
4088         pa_memblockq_get_attr(s->memblockq, &s->buffer_attr);
4089         fix_record_buffer_attr_post(s);
4090
4091         reply = reply_new(tag);
4092         pa_tagstruct_putu32(reply, s->buffer_attr.maxlength);
4093         pa_tagstruct_putu32(reply, s->buffer_attr.fragsize);
4094
4095         if (c->version >= 13)
4096             pa_tagstruct_put_usec(reply, s->configured_source_latency);
4097     }
4098
4099     pa_pstream_send_tagstruct(c->pstream, reply);
4100 }
4101
4102 static void command_update_stream_sample_rate(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
4103     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4104     uint32_t idx;
4105     uint32_t rate;
4106
4107     pa_native_connection_assert_ref(c);
4108     pa_assert(t);
4109
4110     if (pa_tagstruct_getu32(t, &idx) < 0 ||
4111         pa_tagstruct_getu32(t, &rate) < 0 ||
4112         !pa_tagstruct_eof(t)) {
4113         protocol_error(c);
4114         return;
4115     }
4116
4117     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
4118     CHECK_VALIDITY(c->pstream, pa_sample_rate_valid(rate), tag, PA_ERR_INVALID);
4119
4120     if (command == PA_COMMAND_UPDATE_PLAYBACK_STREAM_SAMPLE_RATE) {
4121         playback_stream *s;
4122
4123         s = pa_idxset_get_by_index(c->output_streams, idx);
4124         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
4125         CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
4126
4127         pa_sink_input_set_rate(s->sink_input, rate);
4128
4129     } else {
4130         record_stream *s;
4131         pa_assert(command == PA_COMMAND_UPDATE_RECORD_STREAM_SAMPLE_RATE);
4132
4133         s = pa_idxset_get_by_index(c->record_streams, idx);
4134         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
4135
4136         pa_source_output_set_rate(s->source_output, rate);
4137     }
4138
4139     pa_pstream_send_simple_ack(c->pstream, tag);
4140 }
4141
4142 static void command_update_proplist(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
4143     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4144     uint32_t idx;
4145     uint32_t mode;
4146     pa_proplist *p;
4147
4148     pa_native_connection_assert_ref(c);
4149     pa_assert(t);
4150
4151     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
4152
4153     p = pa_proplist_new();
4154
4155     if (command == PA_COMMAND_UPDATE_CLIENT_PROPLIST) {
4156
4157         if (pa_tagstruct_getu32(t, &mode) < 0 ||
4158             pa_tagstruct_get_proplist(t, p) < 0 ||
4159             !pa_tagstruct_eof(t)) {
4160             protocol_error(c);
4161             pa_proplist_free(p);
4162             return;
4163         }
4164
4165     } else {
4166
4167         if (pa_tagstruct_getu32(t, &idx) < 0 ||
4168             pa_tagstruct_getu32(t, &mode) < 0 ||
4169             pa_tagstruct_get_proplist(t, p) < 0 ||
4170             !pa_tagstruct_eof(t)) {
4171             protocol_error(c);
4172             pa_proplist_free(p);
4173             return;
4174         }
4175     }
4176
4177     if (!(mode == PA_UPDATE_SET || mode == PA_UPDATE_MERGE || mode == PA_UPDATE_REPLACE)) {
4178         pa_proplist_free(p);
4179         CHECK_VALIDITY(c->pstream, false, tag, PA_ERR_INVALID);
4180     }
4181
4182     if (command == PA_COMMAND_UPDATE_PLAYBACK_STREAM_PROPLIST) {
4183         playback_stream *s;
4184
4185         s = pa_idxset_get_by_index(c->output_streams, idx);
4186         if (!s || !playback_stream_isinstance(s)) {
4187             pa_proplist_free(p);
4188             CHECK_VALIDITY(c->pstream, false, tag, PA_ERR_NOENTITY);
4189         }
4190         pa_sink_input_update_proplist(s->sink_input, mode, p);
4191
4192     } else if (command == PA_COMMAND_UPDATE_RECORD_STREAM_PROPLIST) {
4193         record_stream *s;
4194
4195         if (!(s = pa_idxset_get_by_index(c->record_streams, idx))) {
4196             pa_proplist_free(p);
4197             CHECK_VALIDITY(c->pstream, false, tag, PA_ERR_NOENTITY);
4198         }
4199         pa_source_output_update_proplist(s->source_output, mode, p);
4200
4201     } else {
4202         pa_assert(command == PA_COMMAND_UPDATE_CLIENT_PROPLIST);
4203
4204         pa_client_update_proplist(c->client, mode, p);
4205     }
4206
4207     pa_pstream_send_simple_ack(c->pstream, tag);
4208     pa_proplist_free(p);
4209 }
4210
4211 static void command_remove_proplist(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
4212     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4213     uint32_t idx;
4214     unsigned changed = 0;
4215     pa_proplist *p;
4216     pa_strlist *l = NULL;
4217
4218     pa_native_connection_assert_ref(c);
4219     pa_assert(t);
4220
4221     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
4222
4223     if (command != PA_COMMAND_REMOVE_CLIENT_PROPLIST) {
4224
4225         if (pa_tagstruct_getu32(t, &idx) < 0) {
4226             protocol_error(c);
4227             return;
4228         }
4229     }
4230
4231     if (command == PA_COMMAND_REMOVE_PLAYBACK_STREAM_PROPLIST) {
4232         playback_stream *s;
4233
4234         s = pa_idxset_get_by_index(c->output_streams, idx);
4235         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
4236         CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
4237
4238         p = s->sink_input->proplist;
4239
4240     } else if (command == PA_COMMAND_REMOVE_RECORD_STREAM_PROPLIST) {
4241         record_stream *s;
4242
4243         s = pa_idxset_get_by_index(c->record_streams, idx);
4244         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
4245
4246         p = s->source_output->proplist;
4247     } else {
4248         pa_assert(command == PA_COMMAND_REMOVE_CLIENT_PROPLIST);
4249
4250         p = c->client->proplist;
4251     }
4252
4253     for (;;) {
4254         const char *k;
4255
4256         if (pa_tagstruct_gets(t, &k) < 0) {
4257             protocol_error(c);
4258             pa_strlist_free(l);
4259             return;
4260         }
4261
4262         if (!k)
4263             break;
4264
4265         l = pa_strlist_prepend(l, k);
4266     }
4267
4268     if (!pa_tagstruct_eof(t)) {
4269         protocol_error(c);
4270         pa_strlist_free(l);
4271         return;
4272     }
4273
4274     for (;;) {
4275         char *z;
4276
4277         l = pa_strlist_pop(l, &z);
4278
4279         if (!z)
4280             break;
4281
4282         changed += (unsigned) (pa_proplist_unset(p, z) >= 0);
4283         pa_xfree(z);
4284     }
4285
4286     pa_pstream_send_simple_ack(c->pstream, tag);
4287
4288     if (changed) {
4289         if (command == PA_COMMAND_REMOVE_PLAYBACK_STREAM_PROPLIST) {
4290             playback_stream *s;
4291
4292             s = pa_idxset_get_by_index(c->output_streams, idx);
4293             pa_subscription_post(c->protocol->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, s->sink_input->index);
4294
4295         } else if (command == PA_COMMAND_REMOVE_RECORD_STREAM_PROPLIST) {
4296             record_stream *s;
4297
4298             s = pa_idxset_get_by_index(c->record_streams, idx);
4299             pa_subscription_post(c->protocol->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, s->source_output->index);
4300
4301         } else {
4302             pa_assert(command == PA_COMMAND_REMOVE_CLIENT_PROPLIST);
4303             pa_subscription_post(c->protocol->core, PA_SUBSCRIPTION_EVENT_CLIENT|PA_SUBSCRIPTION_EVENT_CHANGE, c->client->index);
4304         }
4305     }
4306 }
4307
4308 static void command_set_default_sink_or_source(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
4309     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4310     const char *s;
4311
4312     pa_native_connection_assert_ref(c);
4313     pa_assert(t);
4314
4315     if (pa_tagstruct_gets(t, &s) < 0 ||
4316         !pa_tagstruct_eof(t)) {
4317         protocol_error(c);
4318         return;
4319     }
4320
4321     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
4322     CHECK_VALIDITY(c->pstream, !s || pa_namereg_is_valid_name(s), tag, PA_ERR_INVALID);
4323
4324     if (command == PA_COMMAND_SET_DEFAULT_SOURCE) {
4325         pa_source *source;
4326
4327         source = pa_namereg_get(c->protocol->core, s, PA_NAMEREG_SOURCE);
4328         CHECK_VALIDITY(c->pstream, source, tag, PA_ERR_NOENTITY);
4329
4330         pa_namereg_set_default_source(c->protocol->core, source);
4331     } else {
4332         pa_sink *sink;
4333         pa_assert(command == PA_COMMAND_SET_DEFAULT_SINK);
4334
4335         sink = pa_namereg_get(c->protocol->core, s, PA_NAMEREG_SINK);
4336         CHECK_VALIDITY(c->pstream, sink, tag, PA_ERR_NOENTITY);
4337
4338         pa_namereg_set_default_sink(c->protocol->core, sink);
4339     }
4340
4341     pa_pstream_send_simple_ack(c->pstream, tag);
4342 }
4343
4344 static void command_set_stream_name(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
4345     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4346     uint32_t idx;
4347     const char *name;
4348
4349     pa_native_connection_assert_ref(c);
4350     pa_assert(t);
4351
4352     if (pa_tagstruct_getu32(t, &idx) < 0 ||
4353         pa_tagstruct_gets(t, &name) < 0 ||
4354         !pa_tagstruct_eof(t)) {
4355         protocol_error(c);
4356         return;
4357     }
4358
4359     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
4360     CHECK_VALIDITY(c->pstream, name && pa_utf8_valid(name), tag, PA_ERR_INVALID);
4361
4362     if (command == PA_COMMAND_SET_PLAYBACK_STREAM_NAME) {
4363         playback_stream *s;
4364
4365         s = pa_idxset_get_by_index(c->output_streams, idx);
4366         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
4367         CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
4368
4369         pa_sink_input_set_name(s->sink_input, name);
4370
4371     } else {
4372         record_stream *s;
4373         pa_assert(command == PA_COMMAND_SET_RECORD_STREAM_NAME);
4374
4375         s = pa_idxset_get_by_index(c->record_streams, idx);
4376         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
4377
4378         pa_source_output_set_name(s->source_output, name);
4379     }
4380
4381     pa_pstream_send_simple_ack(c->pstream, tag);
4382 }
4383
4384 static void command_kill(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
4385     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4386     uint32_t idx;
4387
4388     pa_native_connection_assert_ref(c);
4389     pa_assert(t);
4390
4391     if (pa_tagstruct_getu32(t, &idx) < 0 ||
4392         !pa_tagstruct_eof(t)) {
4393         protocol_error(c);
4394         return;
4395     }
4396
4397     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
4398
4399     if (command == PA_COMMAND_KILL_CLIENT) {
4400         pa_client *client;
4401
4402         client = pa_idxset_get_by_index(c->protocol->core->clients, idx);
4403         CHECK_VALIDITY(c->pstream, client, tag, PA_ERR_NOENTITY);
4404
4405         pa_native_connection_ref(c);
4406         pa_client_kill(client);
4407
4408     } else if (command == PA_COMMAND_KILL_SINK_INPUT) {
4409         pa_sink_input *s;
4410
4411         s = pa_idxset_get_by_index(c->protocol->core->sink_inputs, idx);
4412         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
4413
4414         pa_native_connection_ref(c);
4415         pa_sink_input_kill(s);
4416     } else {
4417         pa_source_output *s;
4418
4419         pa_assert(command == PA_COMMAND_KILL_SOURCE_OUTPUT);
4420
4421         s = pa_idxset_get_by_index(c->protocol->core->source_outputs, idx);
4422         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
4423
4424         pa_native_connection_ref(c);
4425         pa_source_output_kill(s);
4426     }
4427
4428     pa_pstream_send_simple_ack(c->pstream, tag);
4429     pa_native_connection_unref(c);
4430 }
4431
4432 static void command_load_module(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
4433     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4434     pa_module *m;
4435     const char *name, *argument;
4436     pa_tagstruct *reply;
4437
4438     pa_native_connection_assert_ref(c);
4439     pa_assert(t);
4440
4441     if (pa_tagstruct_gets(t, &name) < 0 ||
4442         pa_tagstruct_gets(t, &argument) < 0 ||
4443         !pa_tagstruct_eof(t)) {
4444         protocol_error(c);
4445         return;
4446     }
4447
4448     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
4449     CHECK_VALIDITY(c->pstream, name && *name && pa_utf8_valid(name) && !strchr(name, '/'), tag, PA_ERR_INVALID);
4450     CHECK_VALIDITY(c->pstream, !argument || pa_utf8_valid(argument), tag, PA_ERR_INVALID);
4451
4452     if (!(m = pa_module_load(c->protocol->core, name, argument))) {
4453         pa_pstream_send_error(c->pstream, tag, PA_ERR_MODINITFAILED);
4454         return;
4455     }
4456
4457     reply = reply_new(tag);
4458     pa_tagstruct_putu32(reply, m->index);
4459     pa_pstream_send_tagstruct(c->pstream, reply);
4460 }
4461
4462 static void command_unload_module(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
4463     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4464     uint32_t idx;
4465     pa_module *m;
4466
4467     pa_native_connection_assert_ref(c);
4468     pa_assert(t);
4469
4470     if (pa_tagstruct_getu32(t, &idx) < 0 ||
4471         !pa_tagstruct_eof(t)) {
4472         protocol_error(c);
4473         return;
4474     }
4475
4476     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
4477     m = pa_idxset_get_by_index(c->protocol->core->modules, idx);
4478     CHECK_VALIDITY(c->pstream, m, tag, PA_ERR_NOENTITY);
4479
4480     pa_module_unload_request(m, false);
4481     pa_pstream_send_simple_ack(c->pstream, tag);
4482 }
4483
4484 static void command_move_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
4485     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4486     uint32_t idx = PA_INVALID_INDEX, idx_device = PA_INVALID_INDEX;
4487     const char *name_device = NULL;
4488
4489     pa_native_connection_assert_ref(c);
4490     pa_assert(t);
4491
4492     if (pa_tagstruct_getu32(t, &idx) < 0 ||
4493         pa_tagstruct_getu32(t, &idx_device) < 0 ||
4494         pa_tagstruct_gets(t, &name_device) < 0 ||
4495         !pa_tagstruct_eof(t)) {
4496         protocol_error(c);
4497         return;
4498     }
4499
4500     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
4501     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX, tag, PA_ERR_INVALID);
4502
4503     CHECK_VALIDITY(c->pstream, !name_device || pa_namereg_is_valid_name_or_wildcard(name_device, command == PA_COMMAND_MOVE_SINK_INPUT ? PA_NAMEREG_SINK : PA_NAMEREG_SOURCE), tag, PA_ERR_INVALID);
4504     CHECK_VALIDITY(c->pstream, (idx_device != PA_INVALID_INDEX) ^ (name_device != NULL), tag, PA_ERR_INVALID);
4505
4506     if (command == PA_COMMAND_MOVE_SINK_INPUT) {
4507         pa_sink_input *si = NULL;
4508         pa_sink *sink = NULL;
4509
4510         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, idx);
4511
4512         if (idx_device != PA_INVALID_INDEX)
4513             sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx_device);
4514         else
4515             sink = pa_namereg_get(c->protocol->core, name_device, PA_NAMEREG_SINK);
4516
4517         CHECK_VALIDITY(c->pstream, si && sink, tag, PA_ERR_NOENTITY);
4518
4519         if (pa_sink_input_move_to(si, sink, true) < 0) {
4520             pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
4521             return;
4522         }
4523     } else {
4524         pa_source_output *so = NULL;
4525         pa_source *source;
4526
4527         pa_assert(command == PA_COMMAND_MOVE_SOURCE_OUTPUT);
4528
4529         so = pa_idxset_get_by_index(c->protocol->core->source_outputs, idx);
4530
4531         if (idx_device != PA_INVALID_INDEX)
4532             source = pa_idxset_get_by_index(c->protocol->core->sources, idx_device);
4533         else
4534             source = pa_namereg_get(c->protocol->core, name_device, PA_NAMEREG_SOURCE);
4535
4536         CHECK_VALIDITY(c->pstream, so && source, tag, PA_ERR_NOENTITY);
4537
4538         if (pa_source_output_move_to(so, source, true) < 0) {
4539             pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
4540             return;
4541         }
4542     }
4543
4544     pa_pstream_send_simple_ack(c->pstream, tag);
4545 }
4546
4547 static void command_suspend(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
4548     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4549     uint32_t idx = PA_INVALID_INDEX;
4550     const char *name = NULL;
4551     bool b;
4552
4553     pa_native_connection_assert_ref(c);
4554     pa_assert(t);
4555
4556     if (pa_tagstruct_getu32(t, &idx) < 0 ||
4557         pa_tagstruct_gets(t, &name) < 0 ||
4558         pa_tagstruct_get_boolean(t, &b) < 0 ||
4559         !pa_tagstruct_eof(t)) {
4560         protocol_error(c);
4561         return;
4562     }
4563
4564     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
4565     CHECK_VALIDITY(c->pstream, !name || pa_namereg_is_valid_name_or_wildcard(name, command == PA_COMMAND_SUSPEND_SINK ? PA_NAMEREG_SINK : PA_NAMEREG_SOURCE) || *name == 0, tag, PA_ERR_INVALID);
4566     CHECK_VALIDITY(c->pstream, (idx != PA_INVALID_INDEX) ^ (name != NULL), tag, PA_ERR_INVALID);
4567
4568     if (command == PA_COMMAND_SUSPEND_SINK) {
4569
4570         if (idx == PA_INVALID_INDEX && name && !*name) {
4571
4572             pa_log_debug("%s all sinks", b ? "Suspending" : "Resuming");
4573
4574             if (pa_sink_suspend_all(c->protocol->core, b, PA_SUSPEND_USER) < 0) {
4575                 pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
4576                 return;
4577             }
4578         } else {
4579             pa_sink *sink = NULL;
4580
4581             if (idx != PA_INVALID_INDEX)
4582                 sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx);
4583             else
4584                 sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK);
4585
4586             CHECK_VALIDITY(c->pstream, sink, tag, PA_ERR_NOENTITY);
4587
4588             pa_log_debug("%s of sink %s requested by client %" PRIu32 ".",
4589                          b ? "Suspending" : "Resuming", sink->name, c->client->index);
4590
4591             if (pa_sink_suspend(sink, b, PA_SUSPEND_USER) < 0) {
4592                 pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
4593                 return;
4594             }
4595         }
4596     } else {
4597
4598         pa_assert(command == PA_COMMAND_SUSPEND_SOURCE);
4599
4600         if (idx == PA_INVALID_INDEX && name && !*name) {
4601
4602             pa_log_debug("%s all sources", b ? "Suspending" : "Resuming");
4603
4604             if (pa_source_suspend_all(c->protocol->core, b, PA_SUSPEND_USER) < 0) {
4605                 pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
4606                 return;
4607             }
4608
4609         } else {
4610             pa_source *source;
4611
4612             if (idx != PA_INVALID_INDEX)
4613                 source = pa_idxset_get_by_index(c->protocol->core->sources, idx);
4614             else
4615                 source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE);
4616
4617             CHECK_VALIDITY(c->pstream, source, tag, PA_ERR_NOENTITY);
4618
4619             pa_log_debug("%s of source %s requested by client %" PRIu32 ".",
4620                          b ? "Suspending" : "Resuming", source->name, c->client->index);
4621
4622             if (pa_source_suspend(source, b, PA_SUSPEND_USER) < 0) {
4623                 pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
4624                 return;
4625             }
4626         }
4627     }
4628
4629     pa_pstream_send_simple_ack(c->pstream, tag);
4630 }
4631
4632 static void command_extension(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
4633     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4634     uint32_t idx = PA_INVALID_INDEX;
4635     const char *name = NULL;
4636     pa_module *m;
4637     pa_native_protocol_ext_cb_t cb;
4638
4639     pa_native_connection_assert_ref(c);
4640     pa_assert(t);
4641
4642     if (pa_tagstruct_getu32(t, &idx) < 0 ||
4643         pa_tagstruct_gets(t, &name) < 0) {
4644         protocol_error(c);
4645         return;
4646     }
4647
4648     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
4649     CHECK_VALIDITY(c->pstream, !name || pa_utf8_valid(name), tag, PA_ERR_INVALID);
4650     CHECK_VALIDITY(c->pstream, (idx != PA_INVALID_INDEX) ^ (name != NULL), tag, PA_ERR_INVALID);
4651
4652     if (idx != PA_INVALID_INDEX)
4653         m = pa_idxset_get_by_index(c->protocol->core->modules, idx);
4654     else
4655         PA_IDXSET_FOREACH(m, c->protocol->core->modules, idx)
4656             if (pa_streq(name, m->name))
4657                 break;
4658
4659     CHECK_VALIDITY(c->pstream, m, tag, PA_ERR_NOEXTENSION);
4660     CHECK_VALIDITY(c->pstream, m->load_once || idx != PA_INVALID_INDEX, tag, PA_ERR_INVALID);
4661
4662     cb = (pa_native_protocol_ext_cb_t) (unsigned long) pa_hashmap_get(c->protocol->extensions, m);
4663     CHECK_VALIDITY(c->pstream, cb, tag, PA_ERR_NOEXTENSION);
4664
4665     if (cb(c->protocol, m, c, tag, t) < 0)
4666         protocol_error(c);
4667 }
4668
4669 static void command_set_card_profile(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
4670     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4671     uint32_t idx = PA_INVALID_INDEX;
4672     const char *name = NULL, *profile_name = NULL;
4673     pa_card *card = NULL;
4674     pa_card_profile *profile;
4675     int ret;
4676
4677     pa_native_connection_assert_ref(c);
4678     pa_assert(t);
4679
4680     if (pa_tagstruct_getu32(t, &idx) < 0 ||
4681         pa_tagstruct_gets(t, &name) < 0 ||
4682         pa_tagstruct_gets(t, &profile_name) < 0 ||
4683         !pa_tagstruct_eof(t)) {
4684         protocol_error(c);
4685         return;
4686     }
4687
4688     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
4689     CHECK_VALIDITY(c->pstream, !name || pa_namereg_is_valid_name(name), tag, PA_ERR_INVALID);
4690     CHECK_VALIDITY(c->pstream, (idx != PA_INVALID_INDEX) ^ (name != NULL), tag, PA_ERR_INVALID);
4691     CHECK_VALIDITY(c->pstream, profile_name, tag, PA_ERR_INVALID);
4692
4693     if (idx != PA_INVALID_INDEX)
4694         card = pa_idxset_get_by_index(c->protocol->core->cards, idx);
4695     else
4696         card = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_CARD);
4697
4698     CHECK_VALIDITY(c->pstream, card, tag, PA_ERR_NOENTITY);
4699
4700     profile = pa_hashmap_get(card->profiles, profile_name);
4701
4702     CHECK_VALIDITY(c->pstream, profile, tag, PA_ERR_NOENTITY);
4703
4704     if ((ret = pa_card_set_profile(card, profile, true)) < 0) {
4705         pa_pstream_send_error(c->pstream, tag, -ret);
4706         return;
4707     }
4708
4709     pa_pstream_send_simple_ack(c->pstream, tag);
4710 }
4711
4712 static void command_set_sink_or_source_port(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
4713     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4714     uint32_t idx = PA_INVALID_INDEX;
4715     const char *name = NULL, *port = NULL;
4716     int ret;
4717
4718     pa_native_connection_assert_ref(c);
4719     pa_assert(t);
4720
4721     if (pa_tagstruct_getu32(t, &idx) < 0 ||
4722         pa_tagstruct_gets(t, &name) < 0 ||
4723         pa_tagstruct_gets(t, &port) < 0 ||
4724         !pa_tagstruct_eof(t)) {
4725         protocol_error(c);
4726         return;
4727     }
4728
4729     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
4730     CHECK_VALIDITY(c->pstream, !name || pa_namereg_is_valid_name_or_wildcard(name, command == PA_COMMAND_SET_SINK_PORT ? PA_NAMEREG_SINK : PA_NAMEREG_SOURCE), tag, PA_ERR_INVALID);
4731     CHECK_VALIDITY(c->pstream, (idx != PA_INVALID_INDEX) ^ (name != NULL), tag, PA_ERR_INVALID);
4732     CHECK_VALIDITY(c->pstream, port, tag, PA_ERR_INVALID);
4733
4734     if (command == PA_COMMAND_SET_SINK_PORT) {
4735         pa_sink *sink;
4736
4737         if (idx != PA_INVALID_INDEX)
4738             sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx);
4739         else
4740             sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK);
4741
4742         CHECK_VALIDITY(c->pstream, sink, tag, PA_ERR_NOENTITY);
4743
4744         if ((ret = pa_sink_set_port(sink, port, true)) < 0) {
4745             pa_pstream_send_error(c->pstream, tag, -ret);
4746             return;
4747         }
4748     } else {
4749         pa_source *source;
4750
4751         pa_assert(command == PA_COMMAND_SET_SOURCE_PORT);
4752
4753         if (idx != PA_INVALID_INDEX)
4754             source = pa_idxset_get_by_index(c->protocol->core->sources, idx);
4755         else
4756             source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE);
4757
4758         CHECK_VALIDITY(c->pstream, source, tag, PA_ERR_NOENTITY);
4759
4760         if ((ret = pa_source_set_port(source, port, true)) < 0) {
4761             pa_pstream_send_error(c->pstream, tag, -ret);
4762             return;
4763         }
4764     }
4765
4766     pa_pstream_send_simple_ack(c->pstream, tag);
4767 }
4768
4769 static void command_set_port_latency_offset(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
4770     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4771     const char *port_name, *card_name;
4772     uint32_t idx = PA_INVALID_INDEX;
4773     int64_t offset;
4774     pa_card *card = NULL;
4775     pa_device_port *port = NULL;
4776
4777     pa_native_connection_assert_ref(c);
4778     pa_assert(t);
4779
4780     if (pa_tagstruct_getu32(t, &idx) < 0 ||
4781         pa_tagstruct_gets(t, &card_name) < 0 ||
4782         pa_tagstruct_gets(t, &port_name) < 0 ||
4783         pa_tagstruct_gets64(t, &offset) < 0 ||
4784         !pa_tagstruct_eof(t)) {
4785         protocol_error(c);
4786         return;
4787     }
4788
4789     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
4790     CHECK_VALIDITY(c->pstream, !card_name || pa_namereg_is_valid_name(card_name), tag, PA_ERR_INVALID);
4791     CHECK_VALIDITY(c->pstream, (idx != PA_INVALID_INDEX) ^ (card_name != NULL), tag, PA_ERR_INVALID);
4792     CHECK_VALIDITY(c->pstream, port_name, tag, PA_ERR_INVALID);
4793
4794     if (idx != PA_INVALID_INDEX)
4795         card = pa_idxset_get_by_index(c->protocol->core->cards, idx);
4796     else
4797         card = pa_namereg_get(c->protocol->core, card_name, PA_NAMEREG_CARD);
4798
4799     CHECK_VALIDITY(c->pstream, card, tag, PA_ERR_NOENTITY);
4800
4801     port = pa_hashmap_get(card->ports, port_name);
4802     CHECK_VALIDITY(c->pstream, port, tag, PA_ERR_NOENTITY);
4803
4804     pa_device_port_set_latency_offset(port, offset);
4805
4806     pa_pstream_send_simple_ack(c->pstream, tag);
4807 }
4808
4809 /*** pstream callbacks ***/
4810
4811 static void pstream_packet_callback(pa_pstream *p, pa_packet *packet, const pa_creds *creds, void *userdata) {
4812     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4813
4814     pa_assert(p);
4815     pa_assert(packet);
4816     pa_native_connection_assert_ref(c);
4817
4818     if (pa_pdispatch_run(c->pdispatch, packet, creds, c) < 0) {
4819         pa_log("invalid packet.");
4820         native_connection_unlink(c);
4821     }
4822 }
4823
4824 static void pstream_memblock_callback(pa_pstream *p, uint32_t channel, int64_t offset, pa_seek_mode_t seek, const pa_memchunk *chunk, void *userdata) {
4825     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4826     output_stream *stream;
4827
4828     pa_assert(p);
4829     pa_assert(chunk);
4830     pa_native_connection_assert_ref(c);
4831
4832     if (!(stream = OUTPUT_STREAM(pa_idxset_get_by_index(c->output_streams, channel)))) {
4833         pa_log_debug("Client sent block for invalid stream.");
4834         /* Ignoring */
4835         return;
4836     }
4837
4838 #ifdef PROTOCOL_NATIVE_DEBUG
4839     pa_log("got %lu bytes from client", (unsigned long) chunk->length);
4840 #endif
4841
4842     if (playback_stream_isinstance(stream)) {
4843         playback_stream *ps = PLAYBACK_STREAM(stream);
4844
4845         pa_atomic_inc(&ps->seek_or_post_in_queue);
4846         if (chunk->memblock) {
4847             if (seek != PA_SEEK_RELATIVE || offset != 0)
4848                 pa_asyncmsgq_post(ps->sink_input->sink->asyncmsgq, PA_MSGOBJECT(ps->sink_input), SINK_INPUT_MESSAGE_SEEK, PA_UINT_TO_PTR(seek), offset, chunk, NULL);
4849             else
4850                 pa_asyncmsgq_post(ps->sink_input->sink->asyncmsgq, PA_MSGOBJECT(ps->sink_input), SINK_INPUT_MESSAGE_POST_DATA, NULL, 0, chunk, NULL);
4851         } else
4852             pa_asyncmsgq_post(ps->sink_input->sink->asyncmsgq, PA_MSGOBJECT(ps->sink_input), SINK_INPUT_MESSAGE_SEEK, PA_UINT_TO_PTR(seek), offset+chunk->length, NULL, NULL);
4853
4854     } else {
4855         upload_stream *u = UPLOAD_STREAM(stream);
4856         size_t l;
4857
4858         if (!u->memchunk.memblock) {
4859             if (u->length == chunk->length && chunk->memblock) {
4860                 u->memchunk = *chunk;
4861                 pa_memblock_ref(u->memchunk.memblock);
4862                 u->length = 0;
4863             } else {
4864                 u->memchunk.memblock = pa_memblock_new(c->protocol->core->mempool, u->length);
4865                 u->memchunk.index = u->memchunk.length = 0;
4866             }
4867         }
4868
4869         pa_assert(u->memchunk.memblock);
4870
4871         l = u->length;
4872         if (l > chunk->length)
4873             l = chunk->length;
4874
4875         if (l > 0) {
4876             void *dst;
4877             dst = pa_memblock_acquire(u->memchunk.memblock);
4878
4879             if (chunk->memblock) {
4880                 void *src;
4881                 src = pa_memblock_acquire(chunk->memblock);
4882
4883                 memcpy((uint8_t*) dst + u->memchunk.index + u->memchunk.length,
4884                        (uint8_t*) src + chunk->index, l);
4885
4886                 pa_memblock_release(chunk->memblock);
4887             } else
4888                 pa_silence_memory((uint8_t*) dst + u->memchunk.index + u->memchunk.length, l, &u->sample_spec);
4889
4890             pa_memblock_release(u->memchunk.memblock);
4891
4892             u->memchunk.length += l;
4893             u->length -= l;
4894         }
4895     }
4896 }
4897
4898 static void pstream_die_callback(pa_pstream *p, void *userdata) {
4899     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4900
4901     pa_assert(p);
4902     pa_native_connection_assert_ref(c);
4903
4904     native_connection_unlink(c);
4905     pa_log_info("Connection died.");
4906 }
4907
4908 static void pstream_drain_callback(pa_pstream *p, void *userdata) {
4909     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4910
4911     pa_assert(p);
4912     pa_native_connection_assert_ref(c);
4913
4914     native_connection_send_memblock(c);
4915 }
4916
4917 static void pstream_revoke_callback(pa_pstream *p, uint32_t block_id, void *userdata) {
4918     pa_thread_mq *q;
4919
4920     if (!(q = pa_thread_mq_get()))
4921         pa_pstream_send_revoke(p, block_id);
4922     else
4923         pa_asyncmsgq_post(q->outq, PA_MSGOBJECT(userdata), CONNECTION_MESSAGE_REVOKE, PA_UINT_TO_PTR(block_id), 0, NULL, NULL);
4924 }
4925
4926 static void pstream_release_callback(pa_pstream *p, uint32_t block_id, void *userdata) {
4927     pa_thread_mq *q;
4928
4929     if (!(q = pa_thread_mq_get()))
4930         pa_pstream_send_release(p, block_id);
4931     else
4932         pa_asyncmsgq_post(q->outq, PA_MSGOBJECT(userdata), CONNECTION_MESSAGE_RELEASE, PA_UINT_TO_PTR(block_id), 0, NULL, NULL);
4933 }
4934
4935 /*** client callbacks ***/
4936
4937 static void client_kill_cb(pa_client *c) {
4938     pa_assert(c);
4939
4940     native_connection_unlink(PA_NATIVE_CONNECTION(c->userdata));
4941     pa_log_info("Connection killed.");
4942 }
4943
4944 static void client_send_event_cb(pa_client *client, const char*event, pa_proplist *pl) {
4945     pa_tagstruct *t;
4946     pa_native_connection *c;
4947
4948     pa_assert(client);
4949     c = PA_NATIVE_CONNECTION(client->userdata);
4950     pa_native_connection_assert_ref(c);
4951
4952     if (c->version < 15)
4953       return;
4954
4955     t = pa_tagstruct_new(NULL, 0);
4956     pa_tagstruct_putu32(t, PA_COMMAND_CLIENT_EVENT);
4957     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
4958     pa_tagstruct_puts(t, event);
4959     pa_tagstruct_put_proplist(t, pl);
4960     pa_pstream_send_tagstruct(c->pstream, t);
4961 }
4962
4963 /*** module entry points ***/
4964
4965 static void auth_timeout(pa_mainloop_api*m, pa_time_event *e, const struct timeval *t, void *userdata) {
4966     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
4967
4968     pa_assert(m);
4969     pa_native_connection_assert_ref(c);
4970     pa_assert(c->auth_timeout_event == e);
4971
4972     if (!c->authorized) {
4973         native_connection_unlink(c);
4974         pa_log_info("Connection terminated due to authentication timeout.");
4975     }
4976 }
4977
4978 void pa_native_protocol_connect(pa_native_protocol *p, pa_iochannel *io, pa_native_options *o) {
4979     pa_native_connection *c;
4980     char pname[128];
4981     pa_client *client;
4982     pa_client_new_data data;
4983
4984     pa_assert(p);
4985     pa_assert(io);
4986     pa_assert(o);
4987
4988     if (pa_idxset_size(p->connections)+1 > MAX_CONNECTIONS) {
4989         pa_log_warn("Warning! Too many connections (%u), dropping incoming connection.", MAX_CONNECTIONS);
4990         pa_iochannel_free(io);
4991         return;
4992     }
4993
4994     pa_client_new_data_init(&data);
4995     data.module = o->module;
4996     data.driver = __FILE__;
4997     pa_iochannel_socket_peer_to_string(io, pname, sizeof(pname));
4998     pa_proplist_setf(data.proplist, PA_PROP_APPLICATION_NAME, "Native client (%s)", pname);
4999     pa_proplist_sets(data.proplist, "native-protocol.peer", pname);
5000     client = pa_client_new(p->core, &data);
5001     pa_client_new_data_done(&data);
5002
5003     if (!client)
5004         return;
5005
5006     c = pa_msgobject_new(pa_native_connection);
5007     c->parent.parent.free = native_connection_free;
5008     c->parent.process_msg = native_connection_process_msg;
5009     c->protocol = p;
5010     c->options = pa_native_options_ref(o);
5011     c->authorized = false;
5012
5013     if (o->auth_anonymous) {
5014         pa_log_info("Client authenticated anonymously.");
5015         c->authorized = true;
5016     }
5017
5018     if (!c->authorized &&
5019         o->auth_ip_acl &&
5020         pa_ip_acl_check(o->auth_ip_acl, pa_iochannel_get_recv_fd(io)) > 0) {
5021
5022         pa_log_info("Client authenticated by IP ACL.");
5023         c->authorized = true;
5024     }
5025
5026     if (!c->authorized)
5027         c->auth_timeout_event = pa_core_rttime_new(p->core, pa_rtclock_now() + AUTH_TIMEOUT, auth_timeout, c);
5028     else
5029         c->auth_timeout_event = NULL;
5030
5031     c->is_local = pa_iochannel_socket_is_local(io);
5032     c->version = 8;
5033
5034     c->client = client;
5035     c->client->kill = client_kill_cb;
5036     c->client->send_event = client_send_event_cb;
5037     c->client->userdata = c;
5038
5039     c->pstream = pa_pstream_new(p->core->mainloop, io, p->core->mempool);
5040     pa_pstream_set_receive_packet_callback(c->pstream, pstream_packet_callback, c);
5041     pa_pstream_set_receive_memblock_callback(c->pstream, pstream_memblock_callback, c);
5042     pa_pstream_set_die_callback(c->pstream, pstream_die_callback, c);
5043     pa_pstream_set_drain_callback(c->pstream, pstream_drain_callback, c);
5044     pa_pstream_set_revoke_callback(c->pstream, pstream_revoke_callback, c);
5045     pa_pstream_set_release_callback(c->pstream, pstream_release_callback, c);
5046
5047     c->pdispatch = pa_pdispatch_new(p->core->mainloop, true, command_table, PA_COMMAND_MAX);
5048
5049     c->record_streams = pa_idxset_new(NULL, NULL);
5050     c->output_streams = pa_idxset_new(NULL, NULL);
5051
5052     c->rrobin_index = PA_IDXSET_INVALID;
5053     c->subscription = NULL;
5054
5055     pa_idxset_put(p->connections, c, NULL);
5056
5057 #ifdef HAVE_CREDS
5058     if (pa_iochannel_creds_supported(io))
5059         pa_iochannel_creds_enable(io);
5060 #endif
5061
5062     pa_hook_fire(&p->hooks[PA_NATIVE_HOOK_CONNECTION_PUT], c);
5063 }
5064
5065 void pa_native_protocol_disconnect(pa_native_protocol *p, pa_module *m) {
5066     pa_native_connection *c;
5067     void *state = NULL;
5068
5069     pa_assert(p);
5070     pa_assert(m);
5071
5072     while ((c = pa_idxset_iterate(p->connections, &state, NULL)))
5073         if (c->options->module == m)
5074             native_connection_unlink(c);
5075 }
5076
5077 static pa_native_protocol* native_protocol_new(pa_core *c) {
5078     pa_native_protocol *p;
5079     pa_native_hook_t h;
5080
5081     pa_assert(c);
5082
5083     p = pa_xnew(pa_native_protocol, 1);
5084     PA_REFCNT_INIT(p);
5085     p->core = c;
5086     p->connections = pa_idxset_new(NULL, NULL);
5087
5088     p->servers = NULL;
5089
5090     p->extensions = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
5091
5092     for (h = 0; h < PA_NATIVE_HOOK_MAX; h++)
5093         pa_hook_init(&p->hooks[h], p);
5094
5095     pa_assert_se(pa_shared_set(c, "native-protocol", p) >= 0);
5096
5097     return p;
5098 }
5099
5100 pa_native_protocol* pa_native_protocol_get(pa_core *c) {
5101     pa_native_protocol *p;
5102
5103     if ((p = pa_shared_get(c, "native-protocol")))
5104         return pa_native_protocol_ref(p);
5105
5106     return native_protocol_new(c);
5107 }
5108
5109 pa_native_protocol* pa_native_protocol_ref(pa_native_protocol *p) {
5110     pa_assert(p);
5111     pa_assert(PA_REFCNT_VALUE(p) >= 1);
5112
5113     PA_REFCNT_INC(p);
5114
5115     return p;
5116 }
5117
5118 void pa_native_protocol_unref(pa_native_protocol *p) {
5119     pa_native_connection *c;
5120     pa_native_hook_t h;
5121
5122     pa_assert(p);
5123     pa_assert(PA_REFCNT_VALUE(p) >= 1);
5124
5125     if (PA_REFCNT_DEC(p) > 0)
5126         return;
5127
5128     while ((c = pa_idxset_first(p->connections, NULL)))
5129         native_connection_unlink(c);
5130
5131     pa_idxset_free(p->connections, NULL);
5132
5133     pa_strlist_free(p->servers);
5134
5135     for (h = 0; h < PA_NATIVE_HOOK_MAX; h++)
5136         pa_hook_done(&p->hooks[h]);
5137
5138     pa_hashmap_free(p->extensions);
5139
5140     pa_assert_se(pa_shared_remove(p->core, "native-protocol") >= 0);
5141
5142     pa_xfree(p);
5143 }
5144
5145 void pa_native_protocol_add_server_string(pa_native_protocol *p, const char *name) {
5146     pa_assert(p);
5147     pa_assert(PA_REFCNT_VALUE(p) >= 1);
5148     pa_assert(name);
5149
5150     p->servers = pa_strlist_prepend(p->servers, name);
5151
5152     pa_hook_fire(&p->hooks[PA_NATIVE_HOOK_SERVERS_CHANGED], p->servers);
5153 }
5154
5155 void pa_native_protocol_remove_server_string(pa_native_protocol *p, const char *name) {
5156     pa_assert(p);
5157     pa_assert(PA_REFCNT_VALUE(p) >= 1);
5158     pa_assert(name);
5159
5160     p->servers = pa_strlist_remove(p->servers, name);
5161
5162     pa_hook_fire(&p->hooks[PA_NATIVE_HOOK_SERVERS_CHANGED], p->servers);
5163 }
5164
5165 pa_hook *pa_native_protocol_hooks(pa_native_protocol *p) {
5166     pa_assert(p);
5167     pa_assert(PA_REFCNT_VALUE(p) >= 1);
5168
5169     return p->hooks;
5170 }
5171
5172 pa_strlist *pa_native_protocol_servers(pa_native_protocol *p) {
5173     pa_assert(p);
5174     pa_assert(PA_REFCNT_VALUE(p) >= 1);
5175
5176     return p->servers;
5177 }
5178
5179 int pa_native_protocol_install_ext(pa_native_protocol *p, pa_module *m, pa_native_protocol_ext_cb_t cb) {
5180     pa_assert(p);
5181     pa_assert(PA_REFCNT_VALUE(p) >= 1);
5182     pa_assert(m);
5183     pa_assert(cb);
5184     pa_assert(!pa_hashmap_get(p->extensions, m));
5185
5186     pa_assert_se(pa_hashmap_put(p->extensions, m, (void*) (unsigned long) cb) == 0);
5187     return 0;
5188 }
5189
5190 void pa_native_protocol_remove_ext(pa_native_protocol *p, pa_module *m) {
5191     pa_assert(p);
5192     pa_assert(PA_REFCNT_VALUE(p) >= 1);
5193     pa_assert(m);
5194
5195     pa_assert_se(pa_hashmap_remove(p->extensions, m));
5196 }
5197
5198 pa_native_options* pa_native_options_new(void) {
5199     pa_native_options *o;
5200
5201     o = pa_xnew0(pa_native_options, 1);
5202     PA_REFCNT_INIT(o);
5203
5204     return o;
5205 }
5206
5207 pa_native_options* pa_native_options_ref(pa_native_options *o) {
5208     pa_assert(o);
5209     pa_assert(PA_REFCNT_VALUE(o) >= 1);
5210
5211     PA_REFCNT_INC(o);
5212
5213     return o;
5214 }
5215
5216 void pa_native_options_unref(pa_native_options *o) {
5217     pa_assert(o);
5218     pa_assert(PA_REFCNT_VALUE(o) >= 1);
5219
5220     if (PA_REFCNT_DEC(o) > 0)
5221         return;
5222
5223     pa_xfree(o->auth_group);
5224
5225     if (o->auth_ip_acl)
5226         pa_ip_acl_free(o->auth_ip_acl);
5227
5228     if (o->auth_cookie)
5229         pa_auth_cookie_unref(o->auth_cookie);
5230
5231     pa_xfree(o);
5232 }
5233
5234 int pa_native_options_parse(pa_native_options *o, pa_core *c, pa_modargs *ma) {
5235     bool enabled;
5236     const char *acl;
5237
5238     pa_assert(o);
5239     pa_assert(PA_REFCNT_VALUE(o) >= 1);
5240     pa_assert(ma);
5241
5242     if (pa_modargs_get_value_boolean(ma, "auth-anonymous", &o->auth_anonymous) < 0) {
5243         pa_log("auth-anonymous= expects a boolean argument.");
5244         return -1;
5245     }
5246
5247     enabled = true;
5248     if (pa_modargs_get_value_boolean(ma, "auth-group-enable", &enabled) < 0) {
5249         pa_log("auth-group-enable= expects a boolean argument.");
5250         return -1;
5251     }
5252
5253     pa_xfree(o->auth_group);
5254     o->auth_group = enabled ? pa_xstrdup(pa_modargs_get_value(ma, "auth-group", pa_in_system_mode() ? PA_ACCESS_GROUP : NULL)) : NULL;
5255
5256 #ifndef HAVE_CREDS
5257     if (o->auth_group)
5258         pa_log_warn("Authentication group configured, but not available on local system. Ignoring.");
5259 #endif
5260
5261     if ((acl = pa_modargs_get_value(ma, "auth-ip-acl", NULL))) {
5262         pa_ip_acl *ipa;
5263
5264         if (!(ipa = pa_ip_acl_new(acl))) {
5265             pa_log("Failed to parse IP ACL '%s'", acl);
5266             return -1;
5267         }
5268
5269         if (o->auth_ip_acl)
5270             pa_ip_acl_free(o->auth_ip_acl);
5271
5272         o->auth_ip_acl = ipa;
5273     }
5274
5275     enabled = true;
5276     if (pa_modargs_get_value_boolean(ma, "auth-cookie-enabled", &enabled) < 0) {
5277         pa_log("auth-cookie-enabled= expects a boolean argument.");
5278         return -1;
5279     }
5280
5281     if (o->auth_cookie)
5282         pa_auth_cookie_unref(o->auth_cookie);
5283
5284     if (enabled) {
5285         const char *cn;
5286
5287         /* The new name for this is 'auth-cookie', for compat reasons
5288          * we check the old name too */
5289         cn = pa_modargs_get_value(ma, "auth-cookie", NULL);
5290         if (!cn)
5291             cn = pa_modargs_get_value(ma, "cookie", NULL);
5292
5293         if (cn)
5294             o->auth_cookie = pa_auth_cookie_get(c, cn, true, PA_NATIVE_COOKIE_LENGTH);
5295         else {
5296             o->auth_cookie = pa_auth_cookie_get(c, PA_NATIVE_COOKIE_FILE, false, PA_NATIVE_COOKIE_LENGTH);
5297             if (!o->auth_cookie) {
5298                 o->auth_cookie = pa_auth_cookie_get(c, PA_NATIVE_COOKIE_FILE_FALLBACK, false, PA_NATIVE_COOKIE_LENGTH);
5299
5300                 if (!o->auth_cookie)
5301                     o->auth_cookie = pa_auth_cookie_get(c, PA_NATIVE_COOKIE_FILE, true, PA_NATIVE_COOKIE_LENGTH);
5302             }
5303         }
5304
5305         if (!o->auth_cookie)
5306             return -1;
5307
5308     } else
5309           o->auth_cookie = NULL;
5310
5311     return 0;
5312 }
5313
5314 pa_pstream* pa_native_connection_get_pstream(pa_native_connection *c) {
5315     pa_native_connection_assert_ref(c);
5316
5317     return c->pstream;
5318 }
5319
5320 pa_client* pa_native_connection_get_client(pa_native_connection *c) {
5321     pa_native_connection_assert_ref(c);
5322
5323     return c->client;
5324 }