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Completed PCM documentation

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This commit is contained in:
Abramo Bagnara 2001-03-24 16:14:44 +00:00
parent 10a2d4267f
commit ddc9a186cf
13 changed files with 2899 additions and 1320 deletions
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24
include/pcm.h
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@ -281,6 +281,7 @@ typedef struct _snd_pcm_channel_area {
unsigned int step;
} snd_pcm_channel_area_t;
/** #SND_PCM_TYPE_METER scope handle */
typedef struct _snd_pcm_scope snd_pcm_scope_t;
#ifdef __cplusplus
@ -330,12 +331,6 @@ snd_pcm_type_t snd_pcm_type(snd_pcm_t *pcm);
/* HW params */
int snd_pcm_hw_params_any(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
int snd_pcm_hw_params_try_explain_failure(snd_pcm_t *pcm,
snd_pcm_hw_params_t *fail,
snd_pcm_hw_params_t *success,
unsigned int depth,
snd_output_t *out);
int snd_pcm_hw_params_get_rate_numden(const snd_pcm_hw_params_t *params,
unsigned int *rate_num,
unsigned int *rate_den);
@ -343,6 +338,7 @@ int snd_pcm_hw_params_get_sbits(const snd_pcm_hw_params_t *params);
int snd_pcm_hw_params_get_fifo_size(const snd_pcm_hw_params_t *params);
int snd_pcm_hw_params_dump(snd_pcm_hw_params_t *params, snd_output_t *out);
#if 0
typedef struct _snd_pcm_hw_strategy snd_pcm_hw_strategy_t;
/* choices need to be sorted on ascending badness */
@ -360,6 +356,13 @@ void snd_pcm_hw_strategy_free(snd_pcm_hw_strategy_t *strategy);
int snd_pcm_hw_strategy_simple(snd_pcm_hw_strategy_t **strategyp,
unsigned int badness_min,
unsigned int badness_max);
int snd_pcm_hw_params_try_explain_failure(snd_pcm_t *pcm,
snd_pcm_hw_params_t *fail,
snd_pcm_hw_params_t *success,
unsigned int depth,
snd_output_t *out);
#endif
int snd_pcm_sw_params_current(snd_pcm_t *pcm, snd_pcm_sw_params_t *params);
int snd_pcm_sw_params_dump(snd_pcm_sw_params_t *params, snd_output_t *out);
@ -405,14 +408,21 @@ ssize_t snd_pcm_frames_to_bytes(snd_pcm_t *pcm, snd_pcm_sframes_t frames);
int snd_pcm_bytes_to_samples(snd_pcm_t *pcm, ssize_t bytes);
ssize_t snd_pcm_samples_to_bytes(snd_pcm_t *pcm, int samples);
/* meter */
/** #SND_PCM_TYPE_METER scope functions */
typedef struct _snd_pcm_scope_ops {
/** Enable and prepare it using current params */
int (*enable)(snd_pcm_scope_t *scope);
/** Disable */
void (*disable)(snd_pcm_scope_t *scope);
/** PCM has been started */
void (*start)(snd_pcm_scope_t *scope);
/** PCM has been stopped */
void (*stop)(snd_pcm_scope_t *scope);
/** New frames are present */
void (*update)(snd_pcm_scope_t *scope);
/** Reset status */
void (*reset)(snd_pcm_scope_t *scope);
/** PCM is closing */
void (*close)(snd_pcm_scope_t *scope);
} snd_pcm_scope_ops_t;