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