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/* $Id$ */
/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
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 <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <pulse/utf8.h>
#include <pulse/xmalloc.h>
#include <pulsecore/core-subscribe.h>
#include <pulsecore/log.h>
#include <pulsecore/namereg.h>
#include "source-output.h"
#define CHECK_VALIDITY_RETURN_NULL(condition) \
do {\
if (!(condition)) \
return NULL; \
} while (0)
pa_source_output_new_data* pa_source_output_new_data_init(pa_source_output_new_data *data) {
assert(data);
memset(data, 0, sizeof(*data));
data->resample_method = PA_RESAMPLER_INVALID;
return data;
}
void pa_source_output_new_data_set_channel_map(pa_source_output_new_data *data, const pa_channel_map *map) {
assert(data);
if ((data->channel_map_is_set = !!map))
data->channel_map = *map;
}
void pa_source_output_new_data_set_sample_spec(pa_source_output_new_data *data, const pa_sample_spec *spec) {
assert(data);
if ((data->sample_spec_is_set = !!spec))
data->sample_spec = *spec;
}
pa_source_output* pa_source_output_new(
pa_core *core,
pa_source_output_new_data *data,
pa_source_output_flags_t flags) {
pa_source_output *o;
pa_resampler *resampler = NULL;
int r;
char st[PA_SAMPLE_SPEC_SNPRINT_MAX];
assert(core);
assert(data);
if (!(flags & PA_SOURCE_OUTPUT_NO_HOOKS))
if (pa_hook_fire(&core->hook_source_output_new, data) < 0)
return NULL;
CHECK_VALIDITY_RETURN_NULL(!data->driver || pa_utf8_valid(data->driver));
CHECK_VALIDITY_RETURN_NULL(!data->name || pa_utf8_valid(data->name));
if (!data->source)
data->source = pa_namereg_get(core, NULL, PA_NAMEREG_SOURCE, 1);
CHECK_VALIDITY_RETURN_NULL(data->source);
CHECK_VALIDITY_RETURN_NULL(data->source->state == PA_SOURCE_RUNNING);
if (!data->sample_spec_is_set)
data->sample_spec = data->source->sample_spec;
CHECK_VALIDITY_RETURN_NULL(pa_sample_spec_valid(&data->sample_spec));
if (!data->channel_map_is_set)
pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT);
CHECK_VALIDITY_RETURN_NULL(pa_channel_map_valid(&data->channel_map));
CHECK_VALIDITY_RETURN_NULL(data->channel_map.channels == data->sample_spec.channels);
if (data->resample_method == PA_RESAMPLER_INVALID)
data->resample_method = core->resample_method;
CHECK_VALIDITY_RETURN_NULL(data->resample_method < PA_RESAMPLER_MAX);
if (pa_idxset_size(data->source->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
pa_log("Failed to create source output: too many outputs per source.");
return NULL;
}
if (!pa_sample_spec_equal(&data->sample_spec, &data->source->sample_spec) ||
!pa_channel_map_equal(&data->channel_map, &data->source->channel_map))
if (!(resampler = pa_resampler_new(
core->mempool,
&data->source->sample_spec, &data->source->channel_map,
&data->sample_spec, &data->channel_map,
data->resample_method))) {
pa_log_warn("Unsupported resampling operation.");
return NULL;
}
o = pa_xnew(pa_source_output, 1);
o->ref = 1;
o->state = PA_SOURCE_OUTPUT_RUNNING;
o->name = pa_xstrdup(data->name);
o->driver = pa_xstrdup(data->driver);
o->module = data->module;
o->source = data->source;
o->client = data->client;
o->sample_spec = data->sample_spec;
o->channel_map = data->channel_map;
o->push = NULL;
o->kill = NULL;
o->get_latency = NULL;
o->userdata = NULL;
o->resampler = resampler;
o->resample_method = data->resample_method;
r = pa_idxset_put(core->source_outputs, o, &o->index);
assert(r == 0);
r = pa_idxset_put(o->source->outputs, o, NULL);
assert(r == 0);
pa_log_info("created %u \"%s\" on %s with sample spec %s",
o->index,
o->name,
o->source->name,
pa_sample_spec_snprint(st, sizeof(st), &o->sample_spec));
pa_subscription_post(core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_NEW, o->index);
/* We do not call pa_source_notify() here, because the virtual
* functions have not yet been initialized */
return o;
}
void pa_source_output_disconnect(pa_source_output*o) {
assert(o);
assert(o->state != PA_SOURCE_OUTPUT_DISCONNECTED);
assert(o->source);
assert(o->source->core);
pa_idxset_remove_by_data(o->source->core->source_outputs, o, NULL);
pa_idxset_remove_by_data(o->source->outputs, o, NULL);
pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_REMOVE, o->index);
o->source = NULL;
o->push = NULL;
o->kill = NULL;
o->get_latency = NULL;
o->state = PA_SOURCE_OUTPUT_DISCONNECTED;
}
static void source_output_free(pa_source_output* o) {
assert(o);
if (o->state != PA_SOURCE_OUTPUT_DISCONNECTED)
pa_source_output_disconnect(o);
pa_log_info("freed %u \"%s\"", o->index, o->name);
if (o->resampler)
pa_resampler_free(o->resampler);
pa_xfree(o->name);
pa_xfree(o->driver);
pa_xfree(o);
}
void pa_source_output_unref(pa_source_output* o) {
assert(o);
assert(o->ref >= 1);
if (!(--o->ref))
source_output_free(o);
}
pa_source_output* pa_source_output_ref(pa_source_output *o) {
assert(o);
assert(o->ref >= 1);
o->ref++;
return o;
}
void pa_source_output_kill(pa_source_output*o) {
assert(o);
assert(o->ref >= 1);
if (o->kill)
o->kill(o);
}
void pa_source_output_push(pa_source_output *o, const pa_memchunk *chunk) {
pa_memchunk rchunk;
assert(o);
assert(chunk);
assert(chunk->length);
assert(o->push);
if (o->state == PA_SOURCE_OUTPUT_CORKED)
return;
if (!o->resampler) {
o->push(o, chunk);
return;
}
pa_resampler_run(o->resampler, chunk, &rchunk);
if (!rchunk.length)
return;
assert(rchunk.memblock);
o->push(o, &rchunk);
pa_memblock_unref(rchunk.memblock);
}
void pa_source_output_set_name(pa_source_output *o, const char *name) {
assert(o);
assert(o->ref >= 1);
if (!o->name && !name)
return;
if (o->name && name && !strcmp(o->name, name))
return;
pa_xfree(o->name);
o->name = pa_xstrdup(name);
pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
}
pa_usec_t pa_source_output_get_latency(pa_source_output *o) {
assert(o);
assert(o->ref >= 1);
if (o->get_latency)
return o->get_latency(o);
return 0;
}
void pa_source_output_cork(pa_source_output *o, int b) {
int n;
assert(o);
assert(o->ref >= 1);
if (o->state == PA_SOURCE_OUTPUT_DISCONNECTED)
return;
n = o->state == PA_SOURCE_OUTPUT_CORKED && !b;
o->state = b ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING;
if (n)
pa_source_notify(o->source);
}
pa_resample_method_t pa_source_output_get_resample_method(pa_source_output *o) {
assert(o);
assert(o->ref >= 1);
if (!o->resampler)
return o->resample_method;
return pa_resampler_get_method(o->resampler);
}
int pa_source_output_move_to(pa_source_output *o, pa_source *dest) {
pa_source *origin;
pa_resampler *new_resampler = NULL;
assert(o);
assert(o->ref >= 1);
assert(dest);
origin = o->source;
if (dest == origin)
return 0;
if (pa_idxset_size(dest->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
pa_log_warn("Failed to move source output: too many outputs per source.");
return -1;
}
if (o->resampler &&
pa_sample_spec_equal(&origin->sample_spec, &dest->sample_spec) &&
pa_channel_map_equal(&origin->channel_map, &dest->channel_map))
/* Try to reuse the old resampler if possible */
new_resampler = o->resampler;
else if (!pa_sample_spec_equal(&o->sample_spec, &dest->sample_spec) ||
!pa_channel_map_equal(&o->channel_map, &dest->channel_map)) {
/* Okey, we need a new resampler for the new sink */
if (!(new_resampler = pa_resampler_new(
dest->core->mempool,
&dest->sample_spec, &dest->channel_map,
&o->sample_spec, &o->channel_map,
o->resample_method))) {
pa_log_warn("Unsupported resampling operation.");
return -1;
}
}
/* Okey, let's move it */
pa_idxset_remove_by_data(origin->outputs, o, NULL);
pa_idxset_put(dest->outputs, o, NULL);
o->source = dest;
/* Replace resampler */
if (new_resampler != o->resampler) {
if (o->resampler)
pa_resampler_free(o->resampler);
o->resampler = new_resampler;
}
/* Notify everyone */
pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
pa_source_notify(o->source);
return 0;
}
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