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pcm: Add snd_pcm_audio_tstamp_type_t constants

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These are mostly a copy-paste from the kernel headers. But since functions
snd_pcm_audio_tstamp_config make use of these they should be added to the
public API as well.

Reported-by: Alex Moon <alex.r.moon@gmail.com>
Signed-off-by: David Henningsson <diwic@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
David Henningsson 2020-12-16 19:55:22 +01:00 • committed by Takashi Iwai
parent 6d3311fefb
commit ea02dbd20a
1 changed files with 14 additions and 0 deletions
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14
include/pcm.h
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@ -350,6 +350,20 @@ typedef enum _snd_pcm_tstamp_type {
SND_PCM_TSTAMP_TYPE_LAST = SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW,
} snd_pcm_tstamp_type_t;
typedef enum _snd_pcm_audio_tstamp_type {
/**
* first definition for backwards compatibility only,
* maps to wallclock/link time for HDAudio playback and DEFAULT/DMA time for everything else
*/
SND_PCM_AUDIO_TSTAMP_TYPE_COMPAT = 0,
SND_PCM_AUDIO_TSTAMP_TYPE_DEFAULT = 1, /**< DMA time, reported as per hw_ptr */
SND_PCM_AUDIO_TSTAMP_TYPE_LINK = 2, /**< link time reported by sample or wallclock counter, reset on startup */
SND_PCM_AUDIO_TSTAMP_TYPE_LINK_ABSOLUTE = 3, /**< link time reported by sample or wallclock counter, not reset on startup */
SND_PCM_AUDIO_TSTAMP_TYPE_LINK_ESTIMATED = 4, /**< link time estimated indirectly */
SND_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED = 5, /**< link time synchronized with system time */
SND_PCM_AUDIO_TSTAMP_TYPE_LAST = SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED
} snd_pcm_audio_tstamp_type_t;
typedef struct _snd_pcm_audio_tstamp_config {
/* 5 of max 16 bits used */
unsigned int type_requested:4;