4 This file is part of polypaudio.
6 polypaudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU 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.
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.
16 You should have received a copy of the GNU 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
31 #include "sink-input.h"
32 #include "sample-util.h"
34 #include "subscribe.h"
36 #define CONVERT_BUFFER_LENGTH 4096
38 struct pa_sink_input* pa_sink_input_new(struct pa_sink *s, const char *name, const struct pa_sample_spec *spec) {
39 struct pa_sink_input *i;
40 struct pa_resampler *resampler = NULL;
45 if (pa_idxset_ncontents(s->inputs) >= PA_MAX_INPUTS_PER_SINK) {
46 fprintf(stderr, __FILE__": Failed to create sink input: too many inputs per sink.\n");
50 if (!pa_sample_spec_equal(spec, &s->sample_spec))
51 if (!(resampler = pa_resampler_new(spec, &s->sample_spec, s->core->memblock_stat)))
54 i = pa_xmalloc(sizeof(struct pa_sink_input));
55 i->name = pa_xstrdup(name);
59 i->sample_spec = *spec;
64 i->get_latency = NULL;
68 i->volume = PA_VOLUME_NORM;
70 i->resampled_chunk.memblock = NULL;
71 i->resampled_chunk.index = i->resampled_chunk.length = 0;
72 i->resampler = resampler;
75 r = pa_idxset_put(s->core->sink_inputs, i, &i->index);
76 assert(r == 0 && i->index != PA_IDXSET_INVALID);
77 r = pa_idxset_put(s->inputs, i, NULL);
80 pa_sample_spec_snprint(st, sizeof(st), spec);
81 fprintf(stderr, "sink-input: created %u \"%s\" on %u with sample spec \"%s\"\n", i->index, i->name, s->index, st);
83 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_NEW, i->index);
88 void pa_sink_input_free(struct pa_sink_input* i) {
91 assert(i->sink && i->sink->core);
92 pa_idxset_remove_by_data(i->sink->core->sink_inputs, i, NULL);
93 pa_idxset_remove_by_data(i->sink->inputs, i, NULL);
95 if (i->resampled_chunk.memblock)
96 pa_memblock_unref(i->resampled_chunk.memblock);
98 pa_resampler_free(i->resampler);
100 pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_REMOVE, i->index);
106 void pa_sink_input_kill(struct pa_sink_input*i) {
113 pa_usec_t pa_sink_input_get_latency(struct pa_sink_input *i) {
117 return i->get_latency(i);
122 int pa_sink_input_peek(struct pa_sink_input *i, struct pa_memchunk *chunk) {
123 assert(i && chunk && i->peek && i->drop);
129 return i->peek(i, chunk);
131 if (!i->resampled_chunk.memblock) {
132 struct pa_memchunk tchunk;
136 if ((ret = i->peek(i, &tchunk)) < 0)
139 assert(tchunk.length);
141 l = pa_resampler_request(i->resampler, CONVERT_BUFFER_LENGTH);
143 if (tchunk.length > l)
146 i->drop(i, &tchunk, tchunk.length);
148 pa_resampler_run(i->resampler, &tchunk, &i->resampled_chunk);
149 pa_memblock_unref(tchunk.memblock);
152 assert(i->resampled_chunk.memblock && i->resampled_chunk.length);
153 *chunk = i->resampled_chunk;
154 pa_memblock_ref(i->resampled_chunk.memblock);
158 void pa_sink_input_drop(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length) {
162 i->drop(i, chunk, length);
166 assert(i->resampled_chunk.memblock && i->resampled_chunk.length >= length);
168 i->resampled_chunk.index += length;
169 i->resampled_chunk.length -= length;
171 if (!i->resampled_chunk.length) {
172 pa_memblock_unref(i->resampled_chunk.memblock);
173 i->resampled_chunk.memblock = NULL;
174 i->resampled_chunk.index = i->resampled_chunk.length = 0;
178 void pa_sink_input_set_volume(struct pa_sink_input *i, pa_volume_t volume) {
179 assert(i && i->sink && i->sink->core);
181 if (i->volume != volume) {
183 pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
187 void pa_sink_input_cork(struct pa_sink_input *i, int b) {
194 pa_sink_notify(i->sink);