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pcm: Add sw_params API functions to get/set timestamp type

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For obtaining / changing the timestamp type, add the corresponding
sw_params accessor API functions together with the public definitions
of timestamp types.

This patch only adds the functions and defines but doesn't bring the
functional changes yet.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2014-07-10 14:26:37 +02:00
parent 5250a8e212
commit 0d393c29a2
4 changed files with 64 additions and 0 deletions
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9
include/pcm.h
View file

@ -317,6 +317,13 @@ typedef enum _snd_pcm_tstamp {
SND_PCM_TSTAMP_LAST = SND_PCM_TSTAMP_ENABLE
} snd_pcm_tstamp_t;
typedef enum _snd_pcm_tstamp_type {
SND_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /** gettimeofday equivalent */
SND_PCM_TSTAMP_TYPE_MONOTONIC, /** posix_clock_monotonic equivalent */
SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW, /** monotonic_raw (no NTP) */
SND_PCM_TSTAMP_TYPE_LAST = SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW,
} snd_pcm_tstamp_type_t;
/** Unsigned frames quantity */
typedef unsigned long snd_pcm_uframes_t;
/** Signed frames quantity */
@ -844,6 +851,8 @@ int snd_pcm_sw_params_get_boundary(const snd_pcm_sw_params_t *params, snd_pcm_uf
int snd_pcm_sw_params_set_tstamp_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_t val);
int snd_pcm_sw_params_get_tstamp_mode(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_t *val);
int snd_pcm_sw_params_set_tstamp_type(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_type_t val);
int snd_pcm_sw_params_get_tstamp_type(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_type_t *val);
int snd_pcm_sw_params_set_avail_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
int snd_pcm_sw_params_get_avail_min(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
int snd_pcm_sw_params_set_period_event(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, int val);