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core: Add extended stream API to support compressed formats

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This is the beginning of work to support compressed formats natively in
PulseAudio. This adds a pa_stream_new_extended() that takes a format
structure, sends it to the server (=> protocol extension) and has the
server negotiate with the appropropriate sink to figure out what format
it should use.

This is work in progress, and works only with PCM streams. Actual
compressed format support in some sink needs to be implemented, and
extensive testing is required.

More details on how this is supposed to work is available at:
http://pulseaudio.org/wiki/PassthroughSupport
This commit is contained in:
Arun Raghavan 2011-02-28 13:23:23 +05:30
parent 47e0f91aa2
commit 0ac2cfce6d
25 changed files with 347 additions and 82 deletions
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7
src/pulsecore/sink-input.h
View file

@ -28,6 +28,7 @@
typedef struct pa_sink_input pa_sink_input;
#include <pulse/sample.h>
#include <pulse/format.h>
#include <pulsecore/hook-list.h>
#include <pulsecore/memblockq.h>
#include <pulsecore/resampler.h>
@ -92,6 +93,7 @@ struct pa_sink_input {
pa_sample_spec sample_spec;
pa_channel_map channel_map;
pa_format_info *format;
pa_sink_input *sync_prev, *sync_next;
@ -279,6 +281,9 @@ typedef struct pa_sink_input_new_data {
pa_sample_spec sample_spec;
pa_channel_map channel_map;
pa_format_info *format;
pa_idxset *req_formats;
pa_idxset *nego_formats;
pa_cvolume volume, volume_factor, volume_factor_sink;
pa_bool_t muted:1;
@ -303,6 +308,8 @@ void pa_sink_input_new_data_set_volume(pa_sink_input_new_data *data, const pa_cv
void pa_sink_input_new_data_apply_volume_factor(pa_sink_input_new_data *data, const pa_cvolume *volume_factor);
void pa_sink_input_new_data_apply_volume_factor_sink(pa_sink_input_new_data *data, const pa_cvolume *volume_factor);
void pa_sink_input_new_data_set_muted(pa_sink_input_new_data *data, pa_bool_t mute);
pa_bool_t pa_sink_input_new_data_set_sink(pa_sink_input_new_data *data, pa_sink *s, pa_bool_t save);
pa_bool_t pa_sink_input_new_data_set_formats(pa_sink_input_new_data *data, pa_idxset *formats);
void pa_sink_input_new_data_done(pa_sink_input_new_data *data);
/* To be called by the implementing module only */