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     pa_assert(cb);
  89
  90     PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
  91     PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
  92
  93     o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
  94
  95     t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
  96     pa_tagstruct_putu32(t, PA_INVALID_INDEX);
  97     pa_tagstruct_puts(t, "module-stream-restore");
  98     pa_tagstruct_putu32(t, SUBCOMMAND_TEST);
  99     pa_pstream_send_tagstruct(c->pstream, t);
 100     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);
 101
 102     return o;
 103 }
 104
 105 static void ext_stream_restore_read_cb(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
 106     pa_operation *o = userdata;
 107     int eol = 1;
 108
 109     pa_assert(pd);
 110     pa_assert(o);
 111     pa_assert(PA_REFCNT_VALUE(o) >= 1);
 112
 113     if (!o->context)
 114         goto finish;
 115
 116     if (command != PA_COMMAND_REPLY) {
 117         if (pa_context_handle_error(o->context, command, t, FALSE) < 0)
 118             goto finish;
 119
 120         eol = -1;
 121     } else {
 122
 123         while (!pa_tagstruct_eof(t)) {
 124             pa_ext_stream_restore_info i;
 125             pa_bool_t mute = FALSE;
 126
 127             memset(&i, 0, sizeof(i));
 128
 129             if (pa_tagstruct_gets(t, &i.name) < 0 ||
 130                 pa_tagstruct_get_channel_map(t, &i.channel_map) < 0 ||
 131                 pa_tagstruct_get_cvolume(t, &i.volume) < 0 ||
 132                 pa_tagstruct_gets(t, &i.device) < 0 ||
 133                 pa_tagstruct_get_boolean(t, &mute) < 0) {
 134
 135                 pa_context_fail(o->context, PA_ERR_PROTOCOL);
 136                 goto finish;
 137             }
 138
 139             i.mute = (int) mute;
 140
 141             if (o->callback) {
 142                 pa_ext_stream_restore_read_cb_t cb = (pa_ext_stream_restore_read_cb_t) o->callback;
 143                 cb(o->context, &i, 0, o->userdata);
 144             }
 145         }
 146     }
 147
 148     if (o->callback) {
 149         pa_ext_stream_restore_read_cb_t cb = (pa_ext_stream_restore_read_cb_t) o->callback;
 150         cb(o->context, NULL, eol, o->userdata);
 151     }
 152
 153 finish:
 154     pa_operation_done(o);
 155     pa_operation_unref(o);
 156 }
 157
 158 pa_operation *pa_ext_stream_restore_read(
 159         pa_context *c,
 160         pa_ext_stream_restore_read_cb_t cb,
 161         void *userdata) {
 162
 163     uint32_t tag;
 164     pa_operation *o;
 165     pa_tagstruct *t;
 166
 167     pa_assert(c);
 168     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 169     pa_assert(cb);
 170
 171     PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
 172     PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
 173
 174     o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
 175
 176     t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
 177     pa_tagstruct_putu32(t, PA_INVALID_INDEX);
 178     pa_tagstruct_puts(t, "module-stream-restore");
 179     pa_tagstruct_putu32(t, SUBCOMMAND_READ);
 180     pa_pstream_send_tagstruct(c->pstream, t);
 181     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);
 182
 183     return o;
 184 }
 185
 186 pa_operation *pa_ext_stream_restore_write(
 187         pa_context *c,
 188         pa_update_mode_t mode,
 189         const pa_ext_stream_restore_info data[],
 190         unsigned n,
 191         pa_bool_t apply_immediately,
 192         pa_context_success_cb_t cb,
 193         void *userdata) {
 194
 195     uint32_t tag;
 196     pa_operation *o;
 197     pa_tagstruct *t;
 198
 199     pa_assert(c);
 200     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 201     pa_assert(mode == PA_UPDATE_MERGE || mode == PA_UPDATE_REPLACE || mode == PA_UPDATE_SET);
 202     pa_assert(data);
 203     pa_assert(cb);
 204
 205     PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
 206     PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
 207
 208     o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
 209
 210     t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
 211     pa_tagstruct_putu32(t, PA_INVALID_INDEX);
 212     pa_tagstruct_puts(t, "module-stream-restore");
 213     pa_tagstruct_putu32(t, SUBCOMMAND_WRITE);
 214
 215     pa_tagstruct_putu32(t, mode);
 216     pa_tagstruct_put_boolean(t, apply_immediately);
 217
 218     for (; n > 0; n--, data++) {
 219         pa_tagstruct_puts(t, data->name);
 220         pa_tagstruct_put_channel_map(t, &data->channel_map);
 221         pa_tagstruct_put_cvolume(t, &data->volume);
 222         pa_tagstruct_puts(t, data->device);
 223         pa_tagstruct_put_boolean(t, data->mute);
 224     }
 225
 226     pa_pstream_send_tagstruct(c->pstream, t);
 227     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);
 228
 229     return o;
 230 }
 231
 232 pa_operation *pa_ext_stream_restore_delete(
 233         pa_context *c,
 234         const char *const s[],
 235         pa_context_success_cb_t cb,
 236         void *userdata) {
 237
 238     uint32_t tag;
 239     pa_operation *o;
 240     pa_tagstruct *t;
 241     const char *const *k;
 242
 243     pa_assert(c);
 244     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 245     pa_assert(s);
 246     pa_assert(cb);
 247
 248     PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
 249     PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
 250
 251     o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
 252
 253     t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
 254     pa_tagstruct_putu32(t, PA_INVALID_INDEX);
 255     pa_tagstruct_puts(t, "module-stream-restore");
 256     pa_tagstruct_putu32(t, SUBCOMMAND_DELETE);
 257
 258     for (k = s; *k; k++)
 259         pa_tagstruct_puts(t, *k);
 260
 261     pa_pstream_send_tagstruct(c->pstream, t);
 262     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);
 263
 264     return o;
 265 }
 266
 267 pa_operation *pa_ext_stream_restore_subscribe(
 268         pa_context *c,
 269         int enable,
 270         pa_context_success_cb_t cb,
 271         void *userdata) {
 272
 273     uint32_t tag;
 274     pa_operation *o;
 275     pa_tagstruct *t;
 276
 277     pa_assert(c);
 278     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 279     pa_assert(cb);
 280
 281     PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
 282     PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
 283
 284     o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
 285
 286     t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
 287     pa_tagstruct_putu32(t, PA_INVALID_INDEX);
 288     pa_tagstruct_puts(t, "module-stream-restore");
 289     pa_tagstruct_putu32(t, SUBCOMMAND_SUBSCRIBE);
 290     pa_tagstruct_put_boolean(t, enable);
 291     pa_pstream_send_tagstruct(c->pstream, t);
 292     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);
 293
 294     return o;
 295 }
 296
 297 void pa_ext_stream_restore_set_subscribe_cb(
 298         pa_context *c,
 299         pa_ext_stream_restore_subscribe_cb_t cb,
 300         void *userdata) {
 301
 302     pa_assert(c);
 303     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 304
 305     c->ext_stream_restore.callback = cb;
 306     c->ext_stream_restore.userdata = userdata;
 307 }
 308
 309 void pa_ext_stream_restore_command(pa_context *c, uint32_t tag, pa_tagstruct *t) {
 310     uint32_t subcommand;
 311
 312     pa_assert(c);
 313     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 314     pa_assert(t);
 315
 316     if (pa_tagstruct_getu32(t, &subcommand) < 0 ||
 317         !pa_tagstruct_eof(t)) {
 318
 319         pa_context_fail(c, PA_ERR_PROTOCOL);
 320         return;
 321     }
 322
 323     if (subcommand != SUBCOMMAND_EVENT) {
 324         pa_context_fail(c, PA_ERR_PROTOCOL);
 325         return;
 326     }
 327
 328     if (c->ext_stream_restore.callback)
 329         c->ext_stream_restore.callback(c, c->ext_stream_restore.userdata);
 330
 331 }