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pcm: Add MSBITS subformat options

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Improve granularity of format selection for S32/U32 formats by adding
masks representing 20, 24 and 32 most significant bits.

Closes: https://github.com/alsa-project/alsa-lib/pull/342
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Cezary Rojewski 2023-08-04 10:13:40 +02:00 • committed by Jaroslav Kysela
parent f33284e85e
commit d8000f57fc
4 changed files with 21 additions and 3 deletions
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8
include/pcm.h
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@ -286,7 +286,13 @@ typedef enum _snd_pcm_subformat {
SND_PCM_SUBFORMAT_UNKNOWN = -1,
/** Standard */
SND_PCM_SUBFORMAT_STD = 0,
SND_PCM_SUBFORMAT_LAST = SND_PCM_SUBFORMAT_STD
/** Maximum bits based on PCM format */
SND_PCM_SUBFORMAT_MSBITS_MAX = 1,
/** 20 most significant bits */
SND_PCM_SUBFORMAT_MSBITS_20 = 2,
/** 24 most significant bits */
SND_PCM_SUBFORMAT_MSBITS_24 = 3,
SND_PCM_SUBFORMAT_LAST = SND_PCM_SUBFORMAT_MSBITS_24
} snd_pcm_subformat_t;
/** PCM state */