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core-format: Add pa_format_info_to_sample_spec2()

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The function will be used in pa_sink_input_new() and
pa_source_output_new(). The fallback parameters are used to merge the
data in the format info with the sink/source sample spec and channel
map, when the format info is lacking some information.
This commit is contained in:
Tanu Kaskinen 2013-11-18 19:58:37 +02:00
parent dfa3c50700
commit 30a32d35c8
2 changed files with 76 additions and 0 deletions
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12
src/pulsecore/core-format.h
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@ -42,6 +42,18 @@ int pa_format_info_get_channels(pa_format_info *f, uint8_t *channels);
* -PA_ERR_NOENTITY. */
int pa_format_info_get_channel_map(pa_format_info *f, pa_channel_map *map);
/* Convert the format info into a sample spec and a channel map. If the format
* info doesn't contain some information, the fallback sample spec and channel
* map are used to populate the output.
*
* pa_format_info_to_sample_spec() exists too. This "version 2" was created,
* because the original function doesn't provide the possibility of specifying
* a fallback sample spec and channel map. That functionality can't be added to
* the original function, because the function is part of the public API and
* adding parameters to it would break the API. */
int pa_format_info_to_sample_spec2(pa_format_info *f, pa_sample_spec *ss, pa_channel_map *map, pa_sample_spec *fallback_ss,
pa_channel_map *fallback_map);
/* For compressed formats. Converts the format info into a sample spec and a
* channel map that an ALSA device can use as its configuration parameters when
* playing back the compressed data. That is, the returned sample spec doesn't