code.delx.au - pulseaudio/blob - src/pulse/ext-stream-restore.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2008 Lennart Poettering
   5
   6   PulseAudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU Lesser General Public License as published
   8   by the Free Software Foundation; either version 2 of the License,
   9   or (at your option) any later version.
  10
  11   PulseAudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with PulseAudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <pulse/context.h>
  27 #include <pulse/gccmacro.h>
  28
  29 #include <pulsecore/macro.h>
  30 #include <pulsecore/pstream-util.h>
  31
  32 #include "internal.h"
  33
  34 #include "ext-stream-restore.h"
  35
  36 enum {
  37     SUBCOMMAND_TEST,
  38     SUBCOMMAND_READ,
  39     SUBCOMMAND_WRITE,
  40     SUBCOMMAND_DELETE,
  41     SUBCOMMAND_SUBSCRIBE,
  42     SUBCOMMAND_EVENT
  43 };
  44
  45 static void ext_stream_restore_test_cb(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
  46     pa_operation *o = userdata;
  47     uint32_t version = PA_INVALID_INDEX;
  48
  49     pa_assert(pd);
  50     pa_assert(o);
  51     pa_assert(PA_REFCNT_VALUE(o) >= 1);
  52
  53     if (!o->context)
  54         goto finish;
  55
  56     if (command != PA_COMMAND_REPLY) {
  57         if (pa_context_handle_error(o->context, command, t, FALSE) < 0)
  58             goto finish;
  59
  60     } else if (pa_tagstruct_getu32(t, &version) < 0 ||
  61                !pa_tagstruct_eof(t)) {
  62
  63         pa_context_fail(o->context, PA_ERR_PROTOCOL);
  64         goto finish;
  65     }
  66
  67     if (o->callback) {
  68         pa_ext_stream_restore_test_cb_t cb = (pa_ext_stream_restore_test_cb_t) o->callback;
  69         cb(o->context, version, o->userdata);
  70     }
  71
  72 finish:
  73     pa_operation_done(o);
  74     pa_operation_unref(o);
  75 }
  76
  77 pa_operation *pa_ext_stream_restore_test(
  78         pa_context *c,
  79         pa_ext_stream_restore_test_cb_t cb,
  80         void *userdata) {
  81
  82     uint32_t tag;
  83     pa_operation *o;
  84     pa_tagstruct *t;
  85
  86     pa_assert(c);
  87     pa_assert(PA_REFCNT_VALUE(c) >= 1);
  88
  89     PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
  90     PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
  91
  92     o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
  93
  94     t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
  95     pa_tagstruct_putu32(t, PA_INVALID_INDEX);
  96     pa_tagstruct_puts(t, "module-stream-restore");
  97     pa_tagstruct_putu32(t, SUBCOMMAND_TEST);
  98     pa_pstream_send_tagstruct(c->pstream, t);
  99     pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, ext_stream_restore_test_cb, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
 100
 101     return o;
 102 }
 103
 104 static void ext_stream_restore_read_cb(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
 105     pa_operation *o = userdata;
 106     int eol = 1;
 107
 108     pa_assert(pd);
 109     pa_assert(o);
 110     pa_assert(PA_REFCNT_VALUE(o) >= 1);
 111
 112     if (!o->context)
 113         goto finish;
 114
 115     if (command != PA_COMMAND_REPLY) {
 116         if (pa_context_handle_error(o->context, command, t, FALSE) < 0)
 117             goto finish;
 118
 119         eol = -1;
 120     } else {
 121
 122         while (!pa_tagstruct_eof(t)) {
 123             pa_ext_stream_restore_info i;
 124             pa_bool_t mute = FALSE;
 125
 126             memset(&i, 0, sizeof(i));
 127
 128             if (pa_tagstruct_gets(t, &i.name) < 0 ||
 129                 pa_tagstruct_get_channel_map(t, &i.channel_map) < 0 ||
 130                 pa_tagstruct_get_cvolume(t, &i.volume) < 0 ||
 131                 pa_tagstruct_gets(t, &i.device) < 0 ||
 132                 pa_tagstruct_get_boolean(t, &mute) < 0) {
 133
 134                 pa_context_fail(o->context, PA_ERR_PROTOCOL);
 135                 goto finish;
 136             }
 137
 138             i.mute = (int) mute;
 139
 140             if (o->callback) {
 141                 pa_ext_stream_restore_read_cb_t cb = (pa_ext_stream_restore_read_cb_t) o->callback;
 142                 cb(o->context, &i, 0, o->userdata);
 143             }
 144         }
 145     }
 146
 147     if (o->callback) {
 148         pa_ext_stream_restore_read_cb_t cb = (pa_ext_stream_restore_read_cb_t) o->callback;
 149         cb(o->context, NULL, eol, o->userdata);
 150     }
 151
 152 finish:
 153     pa_operation_done(o);
 154     pa_operation_unref(o);
 155 }
 156
 157 pa_operation *pa_ext_stream_restore_read(
 158         pa_context *c,
 159         pa_ext_stream_restore_read_cb_t cb,
 160         void *userdata) {
 161
 162     uint32_t tag;
 163     pa_operation *o;
 164     pa_tagstruct *t;
 165
 166     pa_assert(c);
 167     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 168
 169     PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
 170     PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
 171
 172     o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
 173
 174     t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
 175     pa_tagstruct_putu32(t, PA_INVALID_INDEX);
 176     pa_tagstruct_puts(t, "module-stream-restore");
 177     pa_tagstruct_putu32(t, SUBCOMMAND_READ);
 178     pa_pstream_send_tagstruct(c->pstream, t);
 179     pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, ext_stream_restore_read_cb, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
 180
 181     return o;
 182 }
 183
 184 pa_operation *pa_ext_stream_restore_write(
 185         pa_context *c,
 186         pa_update_mode_t mode,
 187         const pa_ext_stream_restore_info data[],
 188         unsigned n,
 189         int apply_immediately,
 190         pa_context_success_cb_t cb,
 191         void *userdata) {
 192
 193     uint32_t tag;
 194     pa_operation *o;
 195     pa_tagstruct *t;
 196
 197     pa_assert(c);
 198     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 199     pa_assert(mode == PA_UPDATE_MERGE || mode == PA_UPDATE_REPLACE || mode == PA_UPDATE_SET);
 200     pa_assert(data);
 201
 202     PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
 203     PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
 204
 205     o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
 206
 207     t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
 208     pa_tagstruct_putu32(t, PA_INVALID_INDEX);
 209     pa_tagstruct_puts(t, "module-stream-restore");
 210     pa_tagstruct_putu32(t, SUBCOMMAND_WRITE);
 211
 212     pa_tagstruct_putu32(t, mode);
 213     pa_tagstruct_put_boolean(t, apply_immediately);
 214
 215     for (; n > 0; n--, data++) {
 216         pa_tagstruct_puts(t, data->name);
 217         pa_tagstruct_put_channel_map(t, &data->channel_map);
 218         pa_tagstruct_put_cvolume(t, &data->volume);
 219         pa_tagstruct_puts(t, data->device);
 220         pa_tagstruct_put_boolean(t, data->mute);
 221     }
 222
 223     pa_pstream_send_tagstruct(c->pstream, t);
 224     pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
 225
 226     return o;
 227 }
 228
 229 pa_operation *pa_ext_stream_restore_delete(
 230         pa_context *c,
 231         const char *const s[],
 232         pa_context_success_cb_t cb,
 233         void *userdata) {
 234
 235     uint32_t tag;
 236     pa_operation *o;
 237     pa_tagstruct *t;
 238     const char *const *k;
 239
 240     pa_assert(c);
 241     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 242     pa_assert(s);
 243
 244     PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
 245     PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
 246
 247     o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
 248
 249     t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
 250     pa_tagstruct_putu32(t, PA_INVALID_INDEX);
 251     pa_tagstruct_puts(t, "module-stream-restore");
 252     pa_tagstruct_putu32(t, SUBCOMMAND_DELETE);
 253
 254     for (k = s; *k; k++)
 255         pa_tagstruct_puts(t, *k);
 256
 257     pa_pstream_send_tagstruct(c->pstream, t);
 258     pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
 259
 260     return o;
 261 }
 262
 263 pa_operation *pa_ext_stream_restore_subscribe(
 264         pa_context *c,
 265         int enable,
 266         pa_context_success_cb_t cb,
 267         void *userdata) {
 268
 269     uint32_t tag;
 270     pa_operation *o;
 271     pa_tagstruct *t;
 272
 273     pa_assert(c);
 274     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 275
 276     PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
 277     PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
 278
 279     o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
 280
 281     t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
 282     pa_tagstruct_putu32(t, PA_INVALID_INDEX);
 283     pa_tagstruct_puts(t, "module-stream-restore");
 284     pa_tagstruct_putu32(t, SUBCOMMAND_SUBSCRIBE);
 285     pa_tagstruct_put_boolean(t, enable);
 286     pa_pstream_send_tagstruct(c->pstream, t);
 287     pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
 288
 289     return o;
 290 }
 291
 292 void pa_ext_stream_restore_set_subscribe_cb(
 293         pa_context *c,
 294         pa_ext_stream_restore_subscribe_cb_t cb,
 295         void *userdata) {
 296
 297     pa_assert(c);
 298     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 299
 300     c->ext_stream_restore.callback = cb;
 301     c->ext_stream_restore.userdata = userdata;
 302 }
 303
 304 void pa_ext_stream_restore_command(pa_context *c, uint32_t tag, pa_tagstruct *t) {
 305     uint32_t subcommand;
 306
 307     pa_assert(c);
 308     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 309     pa_assert(t);
 310
 311     if (pa_tagstruct_getu32(t, &subcommand) < 0 ||
 312         !pa_tagstruct_eof(t)) {
 313
 314         pa_context_fail(c, PA_ERR_PROTOCOL);
 315         return;
 316     }
 317
 318     if (subcommand != SUBCOMMAND_EVENT) {
 319         pa_context_fail(c, PA_ERR_PROTOCOL);
 320         return;
 321     }
 322
 323     if (c->ext_stream_restore.callback)
 324         c->ext_stream_restore.callback(c, c->ext_stream_restore.userdata);
 325
 326 }