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sink,source: support for rate update

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Avoid resampling or use integer resampling when supported by the
sinks/sources

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
This commit is contained in:
Pierre-Louis Bossart 2011-08-02 18:37:28 -05:00 • committed by Arun Raghavan
parent 5bcfd2b630
commit f0ec495938
7 changed files with 219 additions and 0 deletions
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11
src/pulsecore/sink.h
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@ -88,6 +88,8 @@ struct pa_sink {
pa_sample_spec sample_spec;
pa_channel_map channel_map;
uint32_t default_sample_rate;
uint32_t alternate_sample_rate;
pa_idxset *inputs;
unsigned n_corked;
@ -233,6 +235,10 @@ struct pa_sink {
* set). Makes a copy of the formats passed in. */
pa_bool_t (*set_formats)(pa_sink *s, pa_idxset *formats); /* may be NULL */
/* Called whenever the sampling frequency shall be changed. Called from
* main thread. */
pa_bool_t (*update_rate)(pa_sink *s, uint32_t rate);
/* Contains copies of the above data so that the real-time worker
* thread can work without access locking */
struct {
@ -337,11 +343,13 @@ typedef struct pa_sink_new_data {
pa_sample_spec sample_spec;
pa_channel_map channel_map;
uint32_t alternate_sample_rate;
pa_cvolume volume;
pa_bool_t muted :1;
pa_bool_t sample_spec_is_set:1;
pa_bool_t channel_map_is_set:1;
pa_bool_t alternate_sample_rate_is_set:1;
pa_bool_t volume_is_set:1;
pa_bool_t muted_is_set:1;
@ -356,6 +364,7 @@ pa_sink_new_data* pa_sink_new_data_init(pa_sink_new_data *data);
void pa_sink_new_data_set_name(pa_sink_new_data *data, const char *name);
void pa_sink_new_data_set_sample_spec(pa_sink_new_data *data, const pa_sample_spec *spec);
void pa_sink_new_data_set_channel_map(pa_sink_new_data *data, const pa_channel_map *map);
void pa_sink_new_data_set_alternate_sample_rate(pa_sink_new_data *data, const uint32_t alternate_sample_rate);
void pa_sink_new_data_set_volume(pa_sink_new_data *data, const pa_cvolume *volume);
void pa_sink_new_data_set_muted(pa_sink_new_data *data, pa_bool_t mute);
void pa_sink_new_data_set_port(pa_sink_new_data *data, const char *port);
@ -403,6 +412,8 @@ unsigned pa_device_init_priority(pa_proplist *p);
/**** May be called by everyone, from main context */
pa_bool_t pa_sink_update_rate(pa_sink *s, uint32_t rate, pa_bool_t passthrough);
/* The returned value is supposed to be in the time domain of the sound card! */
pa_usec_t pa_sink_get_latency(pa_sink *s);
pa_usec_t pa_sink_get_requested_latency(pa_sink *s);