code.delx.au - pulseaudio/blob - src/pulsecore/source-output.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7
   8   PulseAudio is free software; you can redistribute it and/or modify
   9   it under the terms of the GNU Lesser General Public License as published
  10   by the Free Software Foundation; either version 2 of the License,
  11   or (at your option) any later version.
  12
  13   PulseAudio is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with PulseAudio; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21   USA.
  22 ***/
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 #include <pulse/utf8.h>
  33 #include <pulse/xmalloc.h>
  34
  35 #include <pulsecore/core-subscribe.h>
  36 #include <pulsecore/log.h>
  37 #include <pulsecore/namereg.h>
  38
  39 #include "source-output.h"
  40
  41 static PA_DEFINE_CHECK_TYPE(pa_source_output, pa_msgobject);
  42
  43 static void source_output_free(pa_object* mo);
  44
  45 pa_source_output_new_data* pa_source_output_new_data_init(pa_source_output_new_data *data) {
  46     pa_assert(data);
  47
  48     memset(data, 0, sizeof(*data));
  49     data->resample_method = PA_RESAMPLER_INVALID;
  50     return data;
  51 }
  52
  53 void pa_source_output_new_data_set_channel_map(pa_source_output_new_data *data, const pa_channel_map *map) {
  54     pa_assert(data);
  55
  56     if ((data->channel_map_is_set = !!map))
  57         data->channel_map = *map;
  58 }
  59
  60 void pa_source_output_new_data_set_sample_spec(pa_source_output_new_data *data, const pa_sample_spec *spec) {
  61     pa_assert(data);
  62
  63     if ((data->sample_spec_is_set = !!spec))
  64         data->sample_spec = *spec;
  65 }
  66
  67 pa_source_output* pa_source_output_new(
  68         pa_core *core,
  69         pa_source_output_new_data *data,
  70         pa_source_output_flags_t flags) {
  71
  72     pa_source_output *o;
  73     pa_resampler *resampler = NULL;
  74     char st[PA_SAMPLE_SPEC_SNPRINT_MAX];
  75
  76     pa_assert(core);
  77     pa_assert(data);
  78
  79     if (!(flags & PA_SOURCE_OUTPUT_NO_HOOKS))
  80         if (pa_hook_fire(&core->hook_source_output_new, data) < 0)
  81             return NULL;
  82
  83     pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
  84     pa_return_null_if_fail(!data->name || pa_utf8_valid(data->name));
  85
  86     if (!data->source)
  87         data->source = pa_namereg_get(core, NULL, PA_NAMEREG_SOURCE, 1);
  88
  89     pa_return_null_if_fail(data->source);
  90     pa_return_null_if_fail(pa_source_get_state(data->source) != PA_SOURCE_DISCONNECTED);
  91
  92     if (!data->sample_spec_is_set)
  93         data->sample_spec = data->source->sample_spec;
  94
  95     pa_return_null_if_fail(pa_sample_spec_valid(&data->sample_spec));
  96
  97     if (!data->channel_map_is_set) {
  98         if (data->source->channel_map.channels == data->sample_spec.channels)
  99             data->channel_map = data->source->channel_map;
 100         else
 101             pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT);
 102     }
 103
 104     pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
 105     pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
 106
 107     if (data->resample_method == PA_RESAMPLER_INVALID)
 108         data->resample_method = core->resample_method;
 109
 110     pa_return_null_if_fail(data->resample_method < PA_RESAMPLER_MAX);
 111
 112     if (pa_idxset_size(data->source->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
 113         pa_log("Failed to create source output: too many outputs per source.");
 114         return NULL;
 115     }
 116
 117     if ((flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ||
 118         !pa_sample_spec_equal(&data->sample_spec, &data->source->sample_spec) ||
 119         !pa_channel_map_equal(&data->channel_map, &data->source->channel_map)) {
 120
 121         if (!(resampler = pa_resampler_new(
 122                       core->mempool,
 123                       &data->source->sample_spec, &data->source->channel_map,
 124                       &data->sample_spec, &data->channel_map,
 125                       data->resample_method))) {
 126             pa_log_warn("Unsupported resampling operation.");
 127             return NULL;
 128         }
 129
 130         data->resample_method = pa_resampler_get_method(resampler);
 131     }
 132
 133     o = pa_msgobject_new(pa_source_output);
 134     o->parent.parent.free = source_output_free;
 135     o->parent.process_msg = pa_source_output_process_msg;
 136
 137     o->core = core;
 138     o->state = data->start_corked ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING;
 139     o->flags = flags;
 140     o->name = pa_xstrdup(data->name);
 141     o->driver = pa_xstrdup(data->driver);
 142     o->module = data->module;
 143     o->source = data->source;
 144     o->client = data->client;
 145
 146     o->resample_method = data->resample_method;
 147     o->sample_spec = data->sample_spec;
 148     o->channel_map = data->channel_map;
 149
 150     o->push = NULL;
 151     o->kill = NULL;
 152     o->get_latency = NULL;
 153     o->userdata = NULL;
 154
 155     o->thread_info.state = o->state;
 156     o->thread_info.sample_spec = o->sample_spec;
 157     o->thread_info.resampler = resampler;
 158
 159     pa_assert_se(pa_idxset_put(core->source_outputs, o, &o->index) == 0);
 160     pa_assert_se(pa_idxset_put(o->source->outputs, pa_source_output_ref(o), NULL) == 0);
 161
 162     pa_log_info("Created output %u \"%s\" on %s with sample spec %s",
 163                 o->index,
 164                 o->name,
 165                 o->source->name,
 166                 pa_sample_spec_snprint(st, sizeof(st), &o->sample_spec));
 167
 168     /* Don't forget to call pa_source_output_put! */
 169
 170     return o;
 171 }
 172
 173 static int source_output_set_state(pa_source_output *o, pa_source_output_state_t state) {
 174     pa_assert(o);
 175
 176     if (o->state == state)
 177         return 0;
 178
 179     if (pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) < 0)
 180         return -1;
 181
 182     o->state = state;
 183     return 0;
 184 }
 185
 186 void pa_source_output_disconnect(pa_source_output*o) {
 187     pa_assert(o);
 188     pa_return_if_fail(o->state != PA_SOURCE_OUTPUT_DISCONNECTED);
 189
 190     pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_REMOVE_OUTPUT, o, 0, NULL);
 191
 192     pa_idxset_remove_by_data(o->source->core->source_outputs, o, NULL);
 193     pa_idxset_remove_by_data(o->source->outputs, o, NULL);
 194     pa_source_output_unref(o);
 195
 196     pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_REMOVE, o->index);
 197
 198     source_output_set_state(o, PA_SOURCE_OUTPUT_DISCONNECTED);
 199     pa_source_update_status(o->source);
 200
 201     o->source = NULL;
 202     o->push = NULL;
 203     o->kill = NULL;
 204     o->get_latency = NULL;
 205 }
 206
 207 static void source_output_free(pa_object* mo) {
 208     pa_source_output *o = PA_SOURCE_OUTPUT(mo);
 209
 210     pa_assert(pa_source_output_refcnt(o) == 0);
 211
 212     if (o->state != PA_SOURCE_OUTPUT_DISCONNECTED)
 213         pa_source_output_disconnect(o);
 214
 215     pa_log_info("Freeing output %u \"%s\"", o->index, o->name);
 216
 217     if (o->thread_info.resampler)
 218         pa_resampler_free(o->thread_info.resampler);
 219
 220     pa_xfree(o->name);
 221     pa_xfree(o->driver);
 222     pa_xfree(o);
 223 }
 224
 225 void pa_source_output_put(pa_source_output *o) {
 226     pa_source_output_assert_ref(o);
 227
 228     pa_asyncmsgq_post(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_ADD_OUTPUT, pa_source_output_ref(o), 0, NULL, (pa_free_cb_t) pa_source_output_unref);
 229     pa_source_update_status(o->source);
 230
 231     pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_NEW, o->index);
 232 }
 233
 234 void pa_source_output_kill(pa_source_output*o) {
 235     pa_source_output_assert_ref(o);
 236
 237     if (o->kill)
 238         o->kill(o);
 239 }
 240
 241 pa_usec_t pa_source_output_get_latency(pa_source_output *o) {
 242     pa_usec_t r = 0;
 243
 244     pa_source_output_assert_ref(o);
 245
 246     if (pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY, &r, 0, NULL) < 0)
 247         r = 0;
 248
 249     if (o->get_latency)
 250         r += o->get_latency(o);
 251
 252     return r;
 253 }
 254
 255 void pa_source_output_push(pa_source_output *o, const pa_memchunk *chunk) {
 256     pa_memchunk rchunk;
 257
 258     pa_source_output_assert_ref(o);
 259     pa_assert(chunk);
 260     pa_assert(chunk->length);
 261
 262     if (!o->push || o->state == PA_SOURCE_OUTPUT_DISCONNECTED || o->state == PA_SOURCE_OUTPUT_CORKED)
 263         return;
 264
 265     pa_assert(o->state == PA_SOURCE_OUTPUT_RUNNING);
 266
 267     if (!o->thread_info.resampler) {
 268         o->push(o, chunk);
 269         return;
 270     }
 271
 272     pa_resampler_run(o->thread_info.resampler, chunk, &rchunk);
 273     if (!rchunk.length)
 274         return;
 275
 276     pa_assert(rchunk.memblock);
 277     o->push(o, &rchunk);
 278     pa_memblock_unref(rchunk.memblock);
 279 }
 280
 281 void pa_source_output_cork(pa_source_output *o, int b) {
 282     pa_source_output_assert_ref(o);
 283
 284     source_output_set_state(o, b ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING);
 285 }
 286
 287 int pa_source_output_set_rate(pa_source_output *o, uint32_t rate) {
 288     pa_source_output_assert_ref(o);
 289     pa_return_val_if_fail(o->thread_info.resampler, -1);
 290
 291     if (o->sample_spec.rate == rate)
 292         return 0;
 293
 294     o->sample_spec.rate = rate;
 295
 296     pa_asyncmsgq_post(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_RATE, PA_UINT_TO_PTR(rate), 0, NULL, NULL);
 297
 298     pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
 299     return 0;
 300 }
 301
 302 void pa_source_output_set_name(pa_source_output *o, const char *name) {
 303     pa_source_output_assert_ref(o);
 304
 305     if (!o->name && !name)
 306         return;
 307
 308     if (o->name && name && !strcmp(o->name, name))
 309         return;
 310
 311     pa_xfree(o->name);
 312     o->name = pa_xstrdup(name);
 313
 314     pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
 315 }
 316
 317 pa_resample_method_t pa_source_output_get_resample_method(pa_source_output *o) {
 318     pa_source_output_assert_ref(o);
 319
 320     return o->resample_method;
 321 }
 322
 323 int pa_source_output_move_to(pa_source_output *o, pa_source *dest) {
 324 /*     pa_source *origin; */
 325 /*     pa_resampler *new_resampler = NULL; */
 326
 327     pa_source_output_assert_ref(o);
 328     pa_source_assert_ref(dest);
 329
 330     return -1;
 331
 332 /*     origin = o->source; */
 333
 334 /*     if (dest == origin) */
 335 /*         return 0; */
 336
 337 /*     if (pa_idxset_size(dest->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) { */
 338 /*         pa_log_warn("Failed to move source output: too many outputs per source."); */
 339 /*         return -1; */
 340 /*     } */
 341
 342 /*     if (o->resampler && */
 343 /*         pa_sample_spec_equal(&origin->sample_spec, &dest->sample_spec) && */
 344 /*         pa_channel_map_equal(&origin->channel_map, &dest->channel_map)) */
 345
 346 /*         /\* Try to reuse the old resampler if possible *\/ */
 347 /*         new_resampler = o->resampler; */
 348
 349 /*     else if (!pa_sample_spec_equal(&o->sample_spec, &dest->sample_spec) || */
 350 /*         !pa_channel_map_equal(&o->channel_map, &dest->channel_map)) { */
 351
 352 /*         /\* Okey, we need a new resampler for the new source *\/ */
 353
 354 /*         if (!(new_resampler = pa_resampler_new( */
 355 /*                       dest->core->mempool, */
 356 /*                       &dest->sample_spec, &dest->channel_map, */
 357 /*                       &o->sample_spec, &o->channel_map, */
 358 /*                       o->resample_method))) { */
 359 /*             pa_log_warn("Unsupported resampling operation."); */
 360 /*             return -1; */
 361 /*         } */
 362 /*     } */
 363
 364 /*     /\* Okey, let's move it *\/ */
 365 /*     pa_idxset_remove_by_data(origin->outputs, o, NULL); */
 366 /*     pa_idxset_put(dest->outputs, o, NULL); */
 367 /*     o->source = dest; */
 368
 369 /*     /\* Replace resampler *\/ */
 370 /*     if (new_resampler != o->resampler) { */
 371 /*         if (o->resampler) */
 372 /*             pa_resampler_free(o->resampler); */
 373 /*         o->resampler = new_resampler; */
 374 /*     } */
 375
 376 /*     /\* Notify everyone *\/ */
 377 /*     pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index); */
 378 /*     pa_source_notify(o->source); */
 379
 380 /*     return 0; */
 381 }
 382
 383 int pa_source_output_process_msg(pa_msgobject *mo, int code, void *userdata, int64_t offset, pa_memchunk* chunk) {
 384     pa_source_output *o = PA_SOURCE_OUTPUT(mo);
 385
 386     pa_source_output_assert_ref(o);
 387
 388     switch (code) {
 389
 390         case PA_SOURCE_OUTPUT_MESSAGE_SET_RATE: {
 391
 392             o->thread_info.sample_spec.rate = PA_PTR_TO_UINT(userdata);
 393             pa_resampler_set_output_rate(o->thread_info.resampler, PA_PTR_TO_UINT(userdata));
 394
 395             return 0;
 396         }
 397
 398         case PA_SOURCE_OUTPUT_MESSAGE_SET_STATE: {
 399             o->thread_info.state = PA_PTR_TO_UINT(userdata);
 400
 401             return 0;
 402         }
 403
 404     }
 405
 406     return -1;
 407 }