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Initial proposal for simple PCM API extension

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Jaroslav Kysela 2004-03-14 18:37:55 +00:00
parent 871206c848
commit 894bd9157e
1 changed files with 49 additions and 0 deletions
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49
include/pcm.h
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@ -1213,6 +1213,55 @@ int16_t *snd_pcm_scope_s16_get_channel_buffer(snd_pcm_scope_t *scope,
/** \} */
/**
* \defgroup PCM_Simple Simple setup functions
* \ingroup PCM
* See the \ref pcm page for more details.
* \{
*/
/** Simple PCM latency type */
typedef enum _snd_spcm_latency {
/** standard latency - for standard playback or capture
(estimated latency in one direction 350ms) */
SND_SPCM_LATENCY_STANDARD = 0,
/** medium latency - software phones etc.
(estimated latency in one direction maximally 25ms */
SND_SPCM_LATENCY_MEDIUM,
/** realtime latency - realtime applications (effect processors etc.)
(estimated latency in one direction 5ms and better) */
SND_SPCM_LATENCY_REALTIME
} snd_spcm_latency_t;
/** Simple PCM xrun type */
typedef enum _snd_spcm_xrun_type {
/** driver / library will ignore all xruns, the stream runs forever */
SND_SPCM_XRUN_IGNORE = 0,
/** driver / library stops the stream when an xrun occurs */
SND_SPCM_XRUN_STOP
} snd_spcm_xrun_type_t;
int snd_spcm_init(snd_pcm_t *pcm,
unsigned int rate,
unsigned int channels,
snd_pcm_format_t format,
snd_pcm_subformat_t subformat,
snd_spcm_latency_t latency,
snd_pcm_access_t access,
snd_spcm_xrun_type_t xrun_type);
int snd_spcm_init_duplex(snd_pcm_t *playback_pcm,
snd_pcm_t *capture_pcm,
unsigned int rate,
unsigned int channels,
snd_pcm_format_t format,
snd_pcm_subformat_t subformat,
snd_spcm_latency_t latency,
snd_pcm_access_t access,
snd_spcm_xrun_type_t xrun_type);
/** \} */
/**
* \defgroup PCM_Deprecated Deprecated Functions
* \ingroup PCM