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

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   8
   9   PulseAudio is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU Lesser General Public License as published
  11   by the Free Software Foundation; either version 2 of the License,
  12   or (at your option) any later version.
  13
  14   PulseAudio is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with PulseAudio; if not, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <stdio.h>
  30 #include <assert.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33
  34 #include <pulse/utf8.h>
  35 #include <pulse/xmalloc.h>
  36
  37 #include <pulsecore/source-output.h>
  38 #include <pulsecore/namereg.h>
  39 #include <pulsecore/core-subscribe.h>
  40 #include <pulsecore/log.h>
  41 #include <pulsecore/sample-util.h>
  42
  43 #include "source.h"
  44
  45 #define CHECK_VALIDITY_RETURN_NULL(condition) \
  46 do {\
  47 if (!(condition)) \
  48     return NULL; \
  49 } while (0)
  50
  51 pa_source* pa_source_new(
  52         pa_core *core,
  53         const char *driver,
  54         const char *name,
  55         int fail,
  56         const pa_sample_spec *spec,
  57         const pa_channel_map *map) {
  58
  59     pa_source *s;
  60     char st[256];
  61     int r;
  62     pa_channel_map tmap;
  63
  64     assert(core);
  65     assert(name);
  66     assert(spec);
  67
  68     CHECK_VALIDITY_RETURN_NULL(pa_sample_spec_valid(spec));
  69
  70     if (!map)
  71         map = pa_channel_map_init_auto(&tmap, spec->channels, PA_CHANNEL_MAP_DEFAULT);
  72
  73     CHECK_VALIDITY_RETURN_NULL(map && pa_channel_map_valid(map));
  74     CHECK_VALIDITY_RETURN_NULL(map->channels == spec->channels);
  75     CHECK_VALIDITY_RETURN_NULL(!driver || pa_utf8_valid(driver));
  76     CHECK_VALIDITY_RETURN_NULL(pa_utf8_valid(name) && *name);
  77
  78     s = pa_xnew(pa_source, 1);
  79
  80     if (!(name = pa_namereg_register(core, name, PA_NAMEREG_SOURCE, s, fail))) {
  81         pa_xfree(s);
  82         return NULL;
  83     }
  84
  85     s->ref = 1;
  86     s->core = core;
  87     s->state = PA_SOURCE_RUNNING;
  88     s->name = pa_xstrdup(name);
  89     s->description = NULL;
  90     s->driver = pa_xstrdup(driver);
  91     s->owner = NULL;
  92
  93     s->sample_spec = *spec;
  94     s->channel_map = *map;
  95
  96     s->outputs = pa_idxset_new(NULL, NULL);
  97     s->monitor_of = NULL;
  98
  99     pa_cvolume_reset(&s->sw_volume, spec->channels);
 100     pa_cvolume_reset(&s->hw_volume, spec->channels);
 101     s->sw_muted = 0;
 102     s->hw_muted = 0;
 103
 104     s->is_hardware = 0;
 105
 106     s->get_latency = NULL;
 107     s->notify = NULL;
 108     s->set_hw_volume = NULL;
 109     s->get_hw_volume = NULL;
 110     s->set_hw_mute = NULL;
 111     s->get_hw_mute = NULL;
 112     s->userdata = NULL;
 113
 114     r = pa_idxset_put(core->sources, s, &s->index);
 115     assert(s->index != PA_IDXSET_INVALID && r >= 0);
 116
 117     pa_sample_spec_snprint(st, sizeof(st), spec);
 118     pa_log_info("created %u \"%s\" with sample spec \"%s\"", s->index, s->name, st);
 119
 120     pa_subscription_post(core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
 121
 122     return s;
 123 }
 124
 125 void pa_source_disconnect(pa_source *s) {
 126     pa_source_output *o, *j = NULL;
 127
 128     assert(s);
 129     assert(s->state == PA_SOURCE_RUNNING);
 130
 131     s->state = PA_SOURCE_DISCONNECTED;
 132     pa_namereg_unregister(s->core, s->name);
 133
 134     pa_hook_fire(&s->core->hook_source_disconnect, s);
 135
 136     while ((o = pa_idxset_first(s->outputs, NULL))) {
 137         assert(o != j);
 138         pa_source_output_kill(o);
 139         j = o;
 140     }
 141
 142     pa_idxset_remove_by_data(s->core->sources, s, NULL);
 143
 144     s->get_latency = NULL;
 145     s->notify = NULL;
 146     s->get_hw_volume = NULL;
 147     s->set_hw_volume = NULL;
 148     s->set_hw_mute = NULL;
 149     s->get_hw_mute = NULL;
 150
 151     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
 152 }
 153
 154 static void source_free(pa_source *s) {
 155     assert(s);
 156     assert(!s->ref);
 157
 158     if (s->state != PA_SOURCE_DISCONNECTED)
 159         pa_source_disconnect(s);
 160
 161     pa_log_info("freed %u \"%s\"", s->index, s->name);
 162
 163     pa_idxset_free(s->outputs, NULL, NULL);
 164
 165     pa_xfree(s->name);
 166     pa_xfree(s->description);
 167     pa_xfree(s->driver);
 168     pa_xfree(s);
 169 }
 170
 171 void pa_source_unref(pa_source *s) {
 172     assert(s);
 173     assert(s->ref >= 1);
 174
 175     if (!(--s->ref))
 176         source_free(s);
 177 }
 178
 179 pa_source* pa_source_ref(pa_source *s) {
 180     assert(s);
 181     assert(s->ref >= 1);
 182
 183     s->ref++;
 184     return s;
 185 }
 186
 187 void pa_source_notify(pa_source*s) {
 188     assert(s);
 189     assert(s->ref >= 1);
 190
 191     if (s->notify)
 192         s->notify(s);
 193 }
 194
 195 static int do_post(void *p, PA_GCC_UNUSED uint32_t idx, PA_GCC_UNUSED int *del, void*userdata) {
 196     pa_source_output *o = p;
 197     const pa_memchunk *chunk = userdata;
 198
 199     assert(o);
 200     assert(chunk);
 201
 202     pa_source_output_push(o, chunk);
 203     return 0;
 204 }
 205
 206 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
 207     assert(s);
 208     assert(s->ref >= 1);
 209     assert(chunk);
 210
 211     pa_source_ref(s);
 212
 213     if (s->sw_muted || !pa_cvolume_is_norm(&s->sw_volume)) {
 214         pa_memchunk vchunk = *chunk;
 215
 216         pa_memblock_ref(vchunk.memblock);
 217         pa_memchunk_make_writable(&vchunk, 0);
 218         if (s->sw_muted)
 219             pa_silence_memchunk(&vchunk, &s->sample_spec);
 220         else
 221             pa_volume_memchunk(&vchunk, &s->sample_spec, &s->sw_volume);
 222         pa_idxset_foreach(s->outputs, do_post, &vchunk);
 223         pa_memblock_unref(vchunk.memblock);
 224     } else
 225         pa_idxset_foreach(s->outputs, do_post, (void*) chunk);
 226
 227     pa_source_unref(s);
 228 }
 229
 230 void pa_source_set_owner(pa_source *s, pa_module *m) {
 231     assert(s);
 232     assert(s->ref >= 1);
 233
 234     if (m == s->owner)
 235         return;
 236
 237     s->owner = m;
 238     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 239 }
 240
 241 pa_usec_t pa_source_get_latency(pa_source *s) {
 242     assert(s);
 243     assert(s->ref >= 1);
 244
 245     if (!s->get_latency)
 246         return 0;
 247
 248     return s->get_latency(s);
 249 }
 250
 251 void pa_source_set_volume(pa_source *s, pa_mixer_t m, const pa_cvolume *volume) {
 252     pa_cvolume *v;
 253
 254     assert(s);
 255     assert(s->ref >= 1);
 256     assert(volume);
 257
 258     if (m == PA_MIXER_HARDWARE && s->set_hw_volume)
 259         v = &s->hw_volume;
 260     else
 261         v = &s->sw_volume;
 262
 263     if (pa_cvolume_equal(v, volume))
 264         return;
 265
 266     *v = *volume;
 267
 268     if (v == &s->hw_volume)
 269         if (s->set_hw_volume(s) < 0)
 270             s->sw_volume =  *volume;
 271
 272     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 273 }
 274
 275 const pa_cvolume *pa_source_get_volume(pa_source *s, pa_mixer_t m) {
 276     assert(s);
 277     assert(s->ref >= 1);
 278
 279     if (m == PA_MIXER_HARDWARE && s->set_hw_volume) {
 280
 281         if (s->get_hw_volume)
 282             s->get_hw_volume(s);
 283
 284         return &s->hw_volume;
 285     } else
 286         return &s->sw_volume;
 287 }
 288
 289 void pa_source_set_mute(pa_source *s, pa_mixer_t m, int mute) {
 290     int *t;
 291
 292     assert(s);
 293     assert(s->ref >= 1);
 294
 295     if (m == PA_MIXER_HARDWARE && s->set_hw_mute)
 296         t = &s->hw_muted;
 297     else
 298         t = &s->sw_muted;
 299
 300     if (!!*t == !!mute)
 301         return;
 302
 303     *t = !!mute;
 304
 305     if (t == &s->hw_muted)
 306         if (s->set_hw_mute(s) < 0)
 307             s->sw_muted = !!mute;
 308
 309     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 310 }
 311
 312 int pa_source_get_mute(pa_source *s, pa_mixer_t m) {
 313     assert(s);
 314     assert(s->ref >= 1);
 315
 316     if (m == PA_MIXER_HARDWARE && s->set_hw_mute) {
 317
 318         if (s->get_hw_mute)
 319             s->get_hw_mute(s);
 320
 321         return s->hw_muted;
 322     } else
 323         return s->sw_muted;
 324 }
 325
 326 void pa_source_set_description(pa_source *s, const char *description) {
 327     assert(s);
 328     assert(s->ref >= 1);
 329
 330     if (!description && !s->description)
 331         return;
 332
 333     if (description && s->description && !strcmp(description, s->description))
 334         return;
 335
 336     pa_xfree(s->description);
 337     s->description = pa_xstrdup(description);
 338
 339     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 340 }
 341
 342 unsigned pa_source_used_by(pa_source *s) {
 343     assert(s);
 344     assert(s->ref >= 1);
 345
 346     return pa_idxset_size(s->outputs);
 347 }