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

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of polypaudio.
   5
   6   polypaudio 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   polypaudio 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 polypaudio; 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 <stdio.h>
  27 #include <assert.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30
  31 #include <polypcore/xmalloc.h>
  32 #include <polypcore/core-subscribe.h>
  33 #include <polypcore/log.h>
  34
  35 #include "source-output.h"
  36
  37 pa_source_output* pa_source_output_new(
  38     pa_source *s,
  39     const char *driver,
  40     const char *name,
  41     const pa_sample_spec *spec,
  42     const pa_channel_map *map,
  43     int resample_method) {
  44
  45     pa_source_output *o;
  46     pa_resampler *resampler = NULL;
  47     int r;
  48     char st[256];
  49     pa_channel_map tmap;
  50
  51     assert(s);
  52     assert(spec);
  53     assert(s->state == PA_SOURCE_RUNNING);
  54
  55     if (pa_idxset_size(s->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
  56         pa_log(__FILE__": Failed to create source output: too many outputs per source.\n");
  57         return NULL;
  58     }
  59
  60     if (resample_method == PA_RESAMPLER_INVALID)
  61         resample_method = s->core->resample_method;
  62
  63     if (!map) {
  64         pa_channel_map_init_auto(&tmap, spec->channels);
  65         map = &tmap;
  66     }
  67
  68     if (!pa_sample_spec_equal(&s->sample_spec, spec) || !pa_channel_map_equal(&s->channel_map, map))
  69         if (!(resampler = pa_resampler_new(&s->sample_spec, &s->channel_map, spec, map, s->core->memblock_stat, resample_method)))
  70             return NULL;
  71
  72     o = pa_xmalloc(sizeof(pa_source_output));
  73     o->ref = 1;
  74     o->state = PA_SOURCE_OUTPUT_RUNNING;
  75     o->name = pa_xstrdup(name);
  76     o->driver = pa_xstrdup(driver);
  77     o->owner = NULL;
  78     o->source = s;
  79     o->client = NULL;
  80
  81     o->sample_spec = *spec;
  82     o->channel_map = *map;
  83
  84     o->push = NULL;
  85     o->kill = NULL;
  86     o->get_latency = NULL;
  87     o->userdata = NULL;
  88
  89     o->resampler = resampler;
  90
  91     assert(s->core);
  92     r = pa_idxset_put(s->core->source_outputs, o, &o->index);
  93     assert(r == 0 && o->index != PA_IDXSET_INVALID);
  94     r = pa_idxset_put(s->outputs, o, NULL);
  95     assert(r == 0);
  96
  97     pa_sample_spec_snprint(st, sizeof(st), spec);
  98     pa_log_info(__FILE__": created %u \"%s\" on %u with sample spec \"%s\"\n", o->index, o->name, s->index, st);
  99
 100     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_NEW, o->index);
 101
 102     return o;
 103 }
 104
 105 void pa_source_output_disconnect(pa_source_output*o) {
 106     assert(o);
 107     assert(o->state != PA_SOURCE_OUTPUT_DISCONNECTED);
 108     assert(o->source);
 109     assert(o->source->core);
 110
 111     pa_idxset_remove_by_data(o->source->core->source_outputs, o, NULL);
 112     pa_idxset_remove_by_data(o->source->outputs, o, NULL);
 113
 114     pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_REMOVE, o->index);
 115     o->source = NULL;
 116
 117     o->push = NULL;
 118     o->kill = NULL;
 119     o->get_latency = NULL;
 120
 121     o->state = PA_SOURCE_OUTPUT_DISCONNECTED;
 122 }
 123
 124 static void source_output_free(pa_source_output* o) {
 125     assert(o);
 126
 127     if (o->state != PA_SOURCE_OUTPUT_DISCONNECTED)
 128         pa_source_output_disconnect(o);
 129
 130     pa_log_info(__FILE__": freed %u \"%s\"\n", o->index, o->name);
 131
 132     if (o->resampler)
 133         pa_resampler_free(o->resampler);
 134
 135     pa_xfree(o->name);
 136     pa_xfree(o->driver);
 137     pa_xfree(o);
 138 }
 139
 140
 141 void pa_source_output_unref(pa_source_output* o) {
 142     assert(o);
 143     assert(o->ref >= 1);
 144
 145     if (!(--o->ref))
 146         source_output_free(o);
 147 }
 148
 149 pa_source_output* pa_source_output_ref(pa_source_output *o) {
 150     assert(o);
 151     assert(o->ref >= 1);
 152
 153     o->ref++;
 154     return o;
 155 }
 156
 157
 158 void pa_source_output_kill(pa_source_output*o) {
 159     assert(o);
 160     assert(o->ref >= 1);
 161
 162     if (o->kill)
 163         o->kill(o);
 164 }
 165
 166 void pa_source_output_push(pa_source_output *o, const pa_memchunk *chunk) {
 167     pa_memchunk rchunk;
 168
 169     assert(o);
 170     assert(chunk);
 171     assert(chunk->length);
 172     assert(o->push);
 173
 174     if (o->state == PA_SOURCE_OUTPUT_CORKED)
 175         return;
 176
 177     if (!o->resampler) {
 178         o->push(o, chunk);
 179         return;
 180     }
 181
 182     pa_resampler_run(o->resampler, chunk, &rchunk);
 183     if (!rchunk.length)
 184         return;
 185
 186     assert(rchunk.memblock);
 187     o->push(o, &rchunk);
 188     pa_memblock_unref(rchunk.memblock);
 189 }
 190
 191 void pa_source_output_set_name(pa_source_output *o, const char *name) {
 192     assert(o);
 193     assert(o->ref >= 1);
 194
 195     pa_xfree(o->name);
 196     o->name = pa_xstrdup(name);
 197
 198     pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
 199 }
 200
 201 pa_usec_t pa_source_output_get_latency(pa_source_output *o) {
 202     assert(o);
 203     assert(o->ref >= 1);
 204
 205     if (o->get_latency)
 206         return o->get_latency(o);
 207
 208     return 0;
 209 }
 210
 211 void pa_source_output_cork(pa_source_output *o, int b) {
 212     assert(o);
 213     assert(o->ref >= 1);
 214
 215     if (o->state == PA_SOURCE_OUTPUT_DISCONNECTED)
 216         return;
 217
 218     o->state = b ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING;
 219 }
 220
 221 pa_resample_method_t pa_source_output_get_resample_method(pa_source_output *o) {
 222     assert(o);
 223     assert(o->ref >= 1);
 224
 225     if (!o->resampler)
 226         return PA_RESAMPLER_INVALID;
 227
 228     return pa_resampler_get_method(o->resampler);
 229 }