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, source_output_check_type, pa_msgobject_check_type);
  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, source_output_check_type);
 134     o->parent.parent.free = source_output_free;
 135     o->parent.process_msg = pa_source_output_process_msg;
 136
 137     o->core = core;
 138     pa_atomic_store(&o->state, 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->process_msg = NULL;
 151     o->push = NULL;
 152     o->kill = NULL;
 153     o->get_latency = NULL;
 154     o->userdata = NULL;
 155
 156     o->thread_info.resampler = resampler;
 157
 158     pa_assert_se(pa_idxset_put(core->source_outputs, o, &o->index) == 0);
 159     pa_assert_se( pa_idxset_put(o->source->outputs, o, NULL) == 0);
 160
 161     pa_log_info("Created output %u \"%s\" on %s with sample spec %s",
 162                 o->index,
 163                 o->name,
 164                 o->source->name,
 165                 pa_sample_spec_snprint(st, sizeof(st), &o->sample_spec));
 166
 167     /* Don't forget to call pa_source_output_put! */
 168
 169     return o;
 170 }
 171
 172 void pa_source_output_disconnect(pa_source_output*o) {
 173     pa_assert(o);
 174     pa_return_if_fail(pa_source_output_get_state(o) != PA_SOURCE_OUTPUT_DISCONNECTED);
 175     pa_assert(o->source);
 176     pa_assert(o->source->core);
 177
 178     pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_REMOVE_OUTPUT, o, NULL);
 179
 180     pa_idxset_remove_by_data(o->source->core->source_outputs, o, NULL);
 181     pa_idxset_remove_by_data(o->source->outputs, o, NULL);
 182
 183     pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_REMOVE, o->index);
 184
 185     pa_source_update_status(o->source);
 186
 187     o->source = NULL;
 188     o->process_msg = NULL;
 189     o->push = NULL;
 190     o->kill = NULL;
 191     o->get_latency = NULL;
 192
 193     pa_atomic_store(&o->state, PA_SOURCE_OUTPUT_DISCONNECTED);
 194 }
 195
 196 static void source_output_free(pa_object* mo) {
 197     pa_source_output *o = PA_SOURCE_OUTPUT(mo);
 198
 199     pa_assert(pa_source_output_refcnt(o) == 0);
 200
 201     pa_source_output_disconnect(o);
 202
 203     pa_log_info("Freeing output %u \"%s\"", o->index, o->name);
 204
 205     if (o->thread_info.resampler)
 206         pa_resampler_free(o->thread_info.resampler);
 207
 208     pa_xfree(o->name);
 209     pa_xfree(o->driver);
 210     pa_xfree(o);
 211 }
 212
 213 void pa_source_output_put(pa_source_output *o) {
 214     pa_source_output_assert_ref(o);
 215
 216     pa_asyncmsgq_post(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_ADD_OUTPUT, pa_source_output_ref(o), NULL, (pa_free_cb_t) pa_source_output_unref);
 217     pa_source_update_status(o->source);
 218
 219     pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_NEW, o->index);
 220 }
 221
 222 void pa_source_output_kill(pa_source_output*o) {
 223     pa_source_output_assert_ref(o);
 224
 225     if (o->kill)
 226         o->kill(o);
 227 }
 228
 229 pa_usec_t pa_source_output_get_latency(pa_source_output *o) {
 230     pa_usec_t r = 0;
 231
 232     pa_source_output_assert_ref(o);
 233
 234     if (pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY, &r, NULL) < 0)
 235         r = 0;
 236
 237     if (o->get_latency)
 238         r += o->get_latency(o);
 239
 240     return r;
 241 }
 242
 243 void pa_source_output_push(pa_source_output *o, const pa_memchunk *chunk) {
 244     pa_memchunk rchunk;
 245     pa_source_output_state_t state;
 246
 247     pa_source_output_assert_ref(o);
 248     pa_assert(chunk);
 249     pa_assert(chunk->length);
 250
 251     state = pa_source_output_get_state(o);
 252
 253     if (!o->push || state == PA_SOURCE_OUTPUT_DISCONNECTED || state == PA_SOURCE_OUTPUT_CORKED)
 254         return;
 255
 256     pa_assert(state = PA_SOURCE_OUTPUT_RUNNING);
 257
 258     if (!o->thread_info.resampler) {
 259         o->push(o, chunk);
 260         return;
 261     }
 262
 263     pa_resampler_run(o->thread_info.resampler, chunk, &rchunk);
 264     if (!rchunk.length)
 265         return;
 266
 267     pa_assert(rchunk.memblock);
 268     o->push(o, &rchunk);
 269     pa_memblock_unref(rchunk.memblock);
 270 }
 271
 272 void pa_source_output_cork(pa_source_output *o, int b) {
 273     pa_source_output_state_t state;
 274
 275     pa_source_output_assert_ref(o);
 276
 277     state = pa_source_output_get_state(o);
 278     pa_assert(state != PA_SOURCE_OUTPUT_DISCONNECTED);
 279
 280     if (b && state != PA_SOURCE_OUTPUT_CORKED)
 281         pa_atomic_store(&o->state, PA_SOURCE_OUTPUT_CORKED);
 282     else if (!b && state == PA_SOURCE_OUTPUT_CORKED)
 283         pa_atomic_cmpxchg(&o->state, state, PA_SOURCE_OUTPUT_RUNNING);
 284 }
 285
 286 int pa_source_output_set_rate(pa_source_output *o, uint32_t rate) {
 287     pa_source_output_assert_ref(o);
 288     pa_return_val_if_fail(o->thread_info.resampler, -1);
 289
 290     if (o->sample_spec.rate == rate)
 291         return 0;
 292
 293     o->sample_spec.rate = rate;
 294
 295     pa_asyncmsgq_post(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_RATE, PA_UINT_TO_PTR(rate), NULL, NULL);
 296
 297     pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
 298     return 0;
 299 }
 300
 301 void pa_source_output_set_name(pa_source_output *o, const char *name) {
 302     pa_source_output_assert_ref(o);
 303
 304     if (!o->name && !name)
 305         return;
 306
 307     if (o->name && name && !strcmp(o->name, name))
 308         return;
 309
 310     pa_xfree(o->name);
 311     o->name = pa_xstrdup(name);
 312
 313     pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
 314 }
 315
 316 pa_resample_method_t pa_source_output_get_resample_method(pa_source_output *o) {
 317     pa_source_output_assert_ref(o);
 318
 319     return o->resample_method;
 320 }
 321
 322 int pa_source_output_move_to(pa_source_output *o, pa_source *dest) {
 323 /*     pa_source *origin; */
 324 /*     pa_resampler *new_resampler = NULL; */
 325
 326     pa_source_output_assert_ref(o);
 327     pa_source_assert_ref(dest);
 328
 329     return -1;
 330
 331 /*     origin = o->source; */
 332
 333 /*     if (dest == origin) */
 334 /*         return 0; */
 335
 336 /*     if (pa_idxset_size(dest->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) { */
 337 /*         pa_log_warn("Failed to move source output: too many outputs per source."); */
 338 /*         return -1; */
 339 /*     } */
 340
 341 /*     if (o->resampler && */
 342 /*         pa_sample_spec_equal(&origin->sample_spec, &dest->sample_spec) && */
 343 /*         pa_channel_map_equal(&origin->channel_map, &dest->channel_map)) */
 344
 345 /*         /\* Try to reuse the old resampler if possible *\/ */
 346 /*         new_resampler = o->resampler; */
 347
 348 /*     else if (!pa_sample_spec_equal(&o->sample_spec, &dest->sample_spec) || */
 349 /*         !pa_channel_map_equal(&o->channel_map, &dest->channel_map)) { */
 350
 351 /*         /\* Okey, we need a new resampler for the new source *\/ */
 352
 353 /*         if (!(new_resampler = pa_resampler_new( */
 354 /*                       dest->core->mempool, */
 355 /*                       &dest->sample_spec, &dest->channel_map, */
 356 /*                       &o->sample_spec, &o->channel_map, */
 357 /*                       o->resample_method))) { */
 358 /*             pa_log_warn("Unsupported resampling operation."); */
 359 /*             return -1; */
 360 /*         } */
 361 /*     } */
 362
 363 /*     /\* Okey, let's move it *\/ */
 364 /*     pa_idxset_remove_by_data(origin->outputs, o, NULL); */
 365 /*     pa_idxset_put(dest->outputs, o, NULL); */
 366 /*     o->source = dest; */
 367
 368 /*     /\* Replace resampler *\/ */
 369 /*     if (new_resampler != o->resampler) { */
 370 /*         if (o->resampler) */
 371 /*             pa_resampler_free(o->resampler); */
 372 /*         o->resampler = new_resampler; */
 373 /*     } */
 374
 375 /*     /\* Notify everyone *\/ */
 376 /*     pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index); */
 377 /*     pa_source_notify(o->source); */
 378
 379 /*     return 0; */
 380 }
 381
 382 int pa_source_output_process_msg(pa_msgobject *mo, int code, void *userdata, pa_memchunk* chunk) {
 383     pa_source_output *o = PA_SOURCE_OUTPUT(mo);
 384
 385     pa_source_output_assert_ref(o);
 386
 387     switch (code) {
 388
 389         case PA_SOURCE_OUTPUT_MESSAGE_SET_RATE: {
 390
 391             o->thread_info.sample_spec.rate = PA_PTR_TO_UINT(userdata);
 392             pa_resampler_set_output_rate(o->thread_info.resampler, PA_PTR_TO_UINT(userdata));
 393
 394             return 0;
 395         }
 396     }
 397
 398     return -1;
 399 }