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pulseaudio/src/pulsecore/sink.c
Lennart Poettering b5207fc9ca add pa_sink_used_by()/pa_source_used_by() 
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1226 fefdeb5f-60dc-0310-8127-8f9354f1896f
2006-08-12 16:50:58 +00:00

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/* $Id$ */
/***
This file is part of PulseAudio.
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <assert.h>
#include <string.h>
#include <stdio.h>
#include <pulse/introspect.h>
#include <pulse/utf8.h>
#include <pulse/xmalloc.h>
#include <pulsecore/sink-input.h>
#include <pulsecore/namereg.h>
#include <pulsecore/core-util.h>
#include <pulsecore/sample-util.h>
#include <pulsecore/core-subscribe.h>
#include <pulsecore/log.h>
#include "sink.h"
#define MAX_MIX_CHANNELS 32
#define CHECK_VALIDITY_RETURN_NULL(condition) \
do {\
if (!(condition)) \
return NULL; \
} while (0)
pa_sink* pa_sink_new(
pa_core *core,
const char *driver,
const char *name,
int fail,
const pa_sample_spec *spec,
const pa_channel_map *map) {
pa_sink *s;
char *n = NULL;
char st[256];
int r;
pa_channel_map tmap;
assert(core);
assert(name);
assert(spec);
CHECK_VALIDITY_RETURN_NULL(pa_sample_spec_valid(spec));
if (!map)
map = pa_channel_map_init_auto(&tmap, spec->channels, PA_CHANNEL_MAP_DEFAULT);
CHECK_VALIDITY_RETURN_NULL(map && pa_channel_map_valid(map));
CHECK_VALIDITY_RETURN_NULL(map->channels == spec->channels);
CHECK_VALIDITY_RETURN_NULL(!driver || pa_utf8_valid(driver));
CHECK_VALIDITY_RETURN_NULL(pa_utf8_valid(name) && *name);
s = pa_xnew(pa_sink, 1);
if (!(name = pa_namereg_register(core, name, PA_NAMEREG_SINK, s, fail))) {
pa_xfree(s);
return NULL;
}
s->ref = 1;
s->core = core;
s->state = PA_SINK_RUNNING;
s->name = pa_xstrdup(name);
s->description = NULL;
s->driver = pa_xstrdup(driver);
s->owner = NULL;
s->sample_spec = *spec;
s->channel_map = *map;
s->inputs = pa_idxset_new(NULL, NULL);
pa_cvolume_reset(&s->sw_volume, spec->channels);
pa_cvolume_reset(&s->hw_volume, spec->channels);
s->sw_muted = 0;
s->hw_muted = 0;
s->is_hardware = 0;
s->get_latency = NULL;
s->notify = NULL;
s->set_hw_volume = NULL;
s->get_hw_volume = NULL;
s->set_hw_mute = NULL;
s->get_hw_mute = NULL;
s->userdata = NULL;
r = pa_idxset_put(core->sinks, s, &s->index);
assert(s->index != PA_IDXSET_INVALID && r >= 0);
pa_sample_spec_snprint(st, sizeof(st), spec);
pa_log_info(__FILE__": created %u \"%s\" with sample spec \"%s\"", s->index, s->name, st);
n = pa_sprintf_malloc("%s.monitor", name);
if (!(s->monitor_source = pa_source_new(core, driver, n, 0, spec, map)))
pa_log_warn(__FILE__": failed to create monitor source.");
else {
char *d;
s->monitor_source->monitor_of = s;
d = pa_sprintf_malloc("Monitor Source of %s", s->name);
pa_source_set_description(s->monitor_source, d);
pa_xfree(d);
}
pa_xfree(n);
pa_subscription_post(core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_NEW, s->index);
return s;
}
void pa_sink_disconnect(pa_sink* s) {
pa_sink_input *i, *j = NULL;
assert(s);
assert(s->state == PA_SINK_RUNNING);
pa_namereg_unregister(s->core, s->name);
while ((i = pa_idxset_first(s->inputs, NULL))) {
assert(i != j);
pa_sink_input_kill(i);
j = i;
}
if (s->monitor_source)
pa_source_disconnect(s->monitor_source);
pa_idxset_remove_by_data(s->core->sinks, s, NULL);
s->get_latency = NULL;
s->notify = NULL;
s->get_hw_volume = NULL;
s->set_hw_volume = NULL;
s->set_hw_mute = NULL;
s->get_hw_mute = NULL;
s->state = PA_SINK_DISCONNECTED;
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
}
static void sink_free(pa_sink *s) {
assert(s);
assert(!s->ref);
if (s->state != PA_SINK_DISCONNECTED)
pa_sink_disconnect(s);
pa_log_info(__FILE__": freed %u \"%s\"", s->index, s->name);
if (s->monitor_source) {
pa_source_unref(s->monitor_source);
s->monitor_source = NULL;
}
pa_idxset_free(s->inputs, NULL, NULL);
pa_xfree(s->name);
pa_xfree(s->description);
pa_xfree(s->driver);
pa_xfree(s);
}
void pa_sink_unref(pa_sink*s) {
assert(s);
assert(s->ref >= 1);
if (!(--s->ref))
sink_free(s);
}
pa_sink* pa_sink_ref(pa_sink *s) {
assert(s);
assert(s->ref >= 1);
s->ref++;
return s;
}
void pa_sink_notify(pa_sink*s) {
assert(s);
assert(s->ref >= 1);
if (s->notify)
s->notify(s);
}
static unsigned fill_mix_info(pa_sink *s, pa_mix_info *info, unsigned maxinfo) {
uint32_t idx = PA_IDXSET_INVALID;
pa_sink_input *i;
unsigned n = 0;
assert(s);
assert(s->ref >= 1);
assert(info);
for (i = pa_idxset_first(s->inputs, &idx); maxinfo > 0 && i; i = pa_idxset_next(s->inputs, &idx)) {
/* Increase ref counter, to make sure that this input doesn't
* vanish while we still need it */
pa_sink_input_ref(i);
if (pa_sink_input_peek(i, &info->chunk, &info->volume) < 0) {
pa_sink_input_unref(i);
continue;
}
info->userdata = i;
assert(info->chunk.memblock);
assert(info->chunk.memblock->data);
assert(info->chunk.length);
info++;
maxinfo--;
n++;
}
return n;
}
static void inputs_drop(pa_sink *s, pa_mix_info *info, unsigned maxinfo, size_t length) {
assert(s);
assert(s->ref >= 1);
assert(info);
for (; maxinfo > 0; maxinfo--, info++) {
pa_sink_input *i = info->userdata;
assert(i);
assert(info->chunk.memblock);
/* Drop read data */
pa_sink_input_drop(i, &info->chunk, length);
pa_memblock_unref(info->chunk.memblock);
/* Decrease ref counter */
pa_sink_input_unref(i);
info->userdata = NULL;
}
}
int pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result) {
pa_mix_info info[MAX_MIX_CHANNELS];
unsigned n;
int r = -1;
assert(s);
assert(s->ref >= 1);
assert(length);
assert(result);
pa_sink_ref(s);
n = fill_mix_info(s, info, MAX_MIX_CHANNELS);
if (n <= 0)
goto finish;
if (n == 1) {
pa_cvolume volume;
*result = info[0].chunk;
pa_memblock_ref(result->memblock);
if (result->length > length)
result->length = length;
pa_sw_cvolume_multiply(&volume, &s->sw_volume, &info[0].volume);
if (s->sw_muted || !pa_cvolume_is_norm(&volume)) {
pa_memchunk_make_writable(result, s->core->memblock_stat, 0);
if (s->sw_muted)
pa_silence_memchunk(result, &s->sample_spec);
else
pa_volume_memchunk(result, &s->sample_spec, &volume);
}
} else {
result->memblock = pa_memblock_new(length, s->core->memblock_stat);
assert(result->memblock);
/* pa_log("mixing %i", n); */
result->length = pa_mix(info, n, result->memblock->data, length,
&s->sample_spec, &s->sw_volume, s->sw_muted);
result->index = 0;
}
inputs_drop(s, info, n, result->length);
if (s->monitor_source)
pa_source_post(s->monitor_source, result);
r = 0;
finish:
pa_sink_unref(s);
return r;
}
int pa_sink_render_into(pa_sink*s, pa_memchunk *target) {
pa_mix_info info[MAX_MIX_CHANNELS];
unsigned n;
int r = -1;
assert(s);
assert(s->ref >= 1);
assert(target);
assert(target->memblock);
assert(target->length);
assert(target->memblock->data);
pa_sink_ref(s);
n = fill_mix_info(s, info, MAX_MIX_CHANNELS);
if (n <= 0)
goto finish;
if (n == 1) {
pa_cvolume volume;
if (target->length > info[0].chunk.length)
target->length = info[0].chunk.length;
memcpy((uint8_t*) target->memblock->data + target->index,
(uint8_t*) info[0].chunk.memblock->data + info[0].chunk.index,
target->length);
pa_sw_cvolume_multiply(&volume, &s->sw_volume, &info[0].volume);
if (s->sw_muted)
pa_silence_memchunk(target, &s->sample_spec);
else if (!pa_cvolume_is_norm(&volume))
pa_volume_memchunk(target, &s->sample_spec, &volume);
} else
target->length = pa_mix(info, n,
(uint8_t*) target->memblock->data + target->index,
target->length,
&s->sample_spec,
&s->sw_volume,
s->sw_muted);
inputs_drop(s, info, n, target->length);
if (s->monitor_source)
pa_source_post(s->monitor_source, target);
r = 0;
finish:
pa_sink_unref(s);
return r;
}
void pa_sink_render_into_full(pa_sink *s, pa_memchunk *target) {
pa_memchunk chunk;
size_t l, d;
assert(s);
assert(s->ref >= 1);
assert(target);
assert(target->memblock);
assert(target->length);
assert(target->memblock->data);
pa_sink_ref(s);
l = target->length;
d = 0;
while (l > 0) {
chunk = *target;
chunk.index += d;
chunk.length -= d;
if (pa_sink_render_into(s, &chunk) < 0)
break;
d += chunk.length;
l -= chunk.length;
}
if (l > 0) {
chunk = *target;
chunk.index += d;
chunk.length -= d;
pa_silence_memchunk(&chunk, &s->sample_spec);
}
pa_sink_unref(s);
}
void pa_sink_render_full(pa_sink *s, size_t length, pa_memchunk *result) {
assert(s);
assert(s->ref >= 1);
assert(length);
assert(result);
/*** This needs optimization ***/
result->memblock = pa_memblock_new(result->length = length, s->core->memblock_stat);
result->index = 0;
pa_sink_render_into_full(s, result);
}
pa_usec_t pa_sink_get_latency(pa_sink *s) {
assert(s);
assert(s->ref >= 1);
if (!s->get_latency)
return 0;
return s->get_latency(s);
}
void pa_sink_set_owner(pa_sink *s, pa_module *m) {
assert(s);
assert(s->ref >= 1);
if (s->owner == m)
return;
s->owner = m;
if (s->monitor_source)
pa_source_set_owner(s->monitor_source, m);
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
}
void pa_sink_set_volume(pa_sink *s, pa_mixer_t m, const pa_cvolume *volume) {
pa_cvolume *v;
assert(s);
assert(s->ref >= 1);
assert(volume);
if (m == PA_MIXER_HARDWARE && s->set_hw_volume)
v = &s->hw_volume;
else
v = &s->sw_volume;
if (pa_cvolume_equal(v, volume))
return;
*v = *volume;
if (v == &s->hw_volume)
if (s->set_hw_volume(s) < 0)
s->sw_volume = *volume;
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
}
const pa_cvolume *pa_sink_get_volume(pa_sink *s, pa_mixer_t m) {
assert(s);
assert(s->ref >= 1);
if (m == PA_MIXER_HARDWARE && s->set_hw_volume) {
if (s->get_hw_volume)
s->get_hw_volume(s);
return &s->hw_volume;
} else
return &s->sw_volume;
}
void pa_sink_set_mute(pa_sink *s, pa_mixer_t m, int mute) {
int *t;
assert(s);
assert(s->ref >= 1);
if (m == PA_MIXER_HARDWARE && s->set_hw_mute)
t = &s->hw_muted;
else
t = &s->sw_muted;
if (!!*t == !!mute)
return;
*t = !!mute;
if (t == &s->hw_muted)
if (s->set_hw_mute(s) < 0)
s->sw_muted = !!mute;
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
}
int pa_sink_get_mute(pa_sink *s, pa_mixer_t m) {
assert(s);
assert(s->ref >= 1);
if (m == PA_MIXER_HARDWARE && s->set_hw_mute) {
if (s->get_hw_mute)
s->get_hw_mute(s);
return s->hw_muted;
} else
return s->sw_muted;
}
void pa_sink_set_description(pa_sink *s, const char *description) {
assert(s);
assert(s->ref >= 1);
if (!description && !s->description)
return;
if (description && s->description && !strcmp(description, s->description))
return;
pa_xfree(s->description);
s->description = pa_xstrdup(description);
if (s->monitor_source) {
char *n;
n = pa_sprintf_malloc("Monitor Source of %s", s->description? s->description : s->name);
pa_source_set_description(s->monitor_source, n);
pa_xfree(n);
}
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
}
unsigned pa_sink_used_by(pa_sink *s) {
unsigned ret;
assert(s);
assert(s->ref >= 1);
ret = pa_idxset_size(s->inputs);
if (s->monitor_source)
ret += pa_source_used_by(s->monitor_source);
return ret;
}
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