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Promoted plugin helpers to general use

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This commit is contained in:
Abramo Bagnara 2001-01-26 09:56:30 +00:00
parent 406587a531
commit c07201926b
9 changed files with 272 additions and 236 deletions
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55
src/pcm/pcm_plugin.h
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@ -62,9 +62,6 @@ int snd_pcm_plugin_munmap_status(snd_pcm_t *pcm);
int snd_pcm_plugin_munmap_control(snd_pcm_t *pcm);
int snd_pcm_plugin_munmap(snd_pcm_t *pcm);
int snd_pcm_plugin_poll_descriptor(snd_pcm_t *pcm);
int get_index(int src_format, int dst_format);
int put_index(int src_format, int dst_format);
int conv_index(int src_format, int dst_format);
int snd_pcm_plugin_hw_params_slave(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
int snd_pcm_plugin_hw_refine_slave(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
@ -86,27 +83,30 @@ extern snd_pcm_fast_ops_t snd_pcm_plugin_fast_ops;
#define ROUTE_PLUGIN_RESOLUTION 16
#if ROUTE_PLUGIN_FLOAT
typedef float ttable_entry_t;
typedef float snd_pcm_route_ttable_entry_t;
#define HALF 0.5
#define FULL 1.0
#else
typedef int ttable_entry_t;
typedef int snd_pcm_route_ttable_entry_t;
#define HALF (ROUTE_PLUGIN_RESOLUTION / 2)
#define FULL ROUTE_PLUGIN_RESOLUTION
#endif
int snd_pcm_linear_get_index(int src_format, int dst_format);
int snd_pcm_linear_put_index(int src_format, int dst_format);
int snd_pcm_linear_convert_index(int src_format, int dst_format);
int snd_pcm_copy_open(snd_pcm_t **pcmp, char *name, snd_pcm_t *slave, int close_slave);
int snd_pcm_linear_open(snd_pcm_t **pcmp, char *name, int sformat, snd_pcm_t *slave, int close_slave);
int snd_pcm_mulaw_open(snd_pcm_t **pcmp, char *name, int sformat, snd_pcm_t *slave, int close_slave);
int snd_pcm_alaw_open(snd_pcm_t **pcmp, char *name, int sformat, snd_pcm_t *slave, int close_slave);
int snd_pcm_adpcm_open(snd_pcm_t **pcmp, char *name, int sformat, snd_pcm_t *slave, int close_slave);
int snd_pcm_route_load_ttable(snd_config_t *tt, ttable_entry_t *ttable,
int snd_pcm_route_load_ttable(snd_config_t *tt, snd_pcm_route_ttable_entry_t *ttable,
unsigned int tt_csize, unsigned int tt_ssize,
unsigned int *tt_cused, unsigned int *tt_sused,
int schannels);
int snd_pcm_route_open(snd_pcm_t **pcmp, char *name,
int sformat, unsigned int schannels,
ttable_entry_t *ttable,
snd_pcm_route_ttable_entry_t *ttable,
unsigned int tt_ssize,
unsigned int tt_cused, unsigned int tt_sused,
snd_pcm_t *slave, int close_slave);
@ -118,3 +118,44 @@ int snd_pcm_rate_open(snd_pcm_t **pcmp, char *name, int sformat, int srate, snd_
(1 << SND_PCM_ACCESS_MMAP_NONINTERLEAVED) | \
(1 << SND_PCM_ACCESS_RW_NONINTERLEAVED))
void snd_pcm_linear_convert(const snd_pcm_channel_area_t *src_areas, snd_pcm_uframes_t src_offset,
const snd_pcm_channel_area_t *dst_areas, snd_pcm_uframes_t dst_offset,
unsigned int channels, snd_pcm_uframes_t frames, int convidx);
void snd_pcm_alaw_decode(const snd_pcm_channel_area_t *src_areas,
snd_pcm_uframes_t src_offset,
const snd_pcm_channel_area_t *dst_areas,
snd_pcm_uframes_t dst_offset,
unsigned int channels, snd_pcm_uframes_t frames, int putidx);
void snd_pcm_alaw_encode(const snd_pcm_channel_area_t *src_areas,
snd_pcm_uframes_t src_offset,
const snd_pcm_channel_area_t *dst_areas,
snd_pcm_uframes_t dst_offset,
unsigned int channels, snd_pcm_uframes_t frames, int getidx);
void snd_pcm_mulaw_decode(const snd_pcm_channel_area_t *src_areas,
snd_pcm_uframes_t src_offset,
const snd_pcm_channel_area_t *dst_areas,
snd_pcm_uframes_t dst_offset,
unsigned int channels, snd_pcm_uframes_t frames, int putidx);
void snd_pcm_mulaw_encode(const snd_pcm_channel_area_t *src_areas,
snd_pcm_uframes_t src_offset,
const snd_pcm_channel_area_t *dst_areas,
snd_pcm_uframes_t dst_offset,
unsigned int channels, snd_pcm_uframes_t frames, int getidx);
typedef struct _snd_pcm_adpcm_state {
int pred_val; /* Calculated predicted value */
int step_idx; /* Previous StepSize lookup index */
} snd_pcm_adpcm_state_t;
void snd_pcm_adpcm_decode(const snd_pcm_channel_area_t *src_areas,
snd_pcm_uframes_t src_offset,
const snd_pcm_channel_area_t *dst_areas,
snd_pcm_uframes_t dst_offset,
unsigned int channels, snd_pcm_uframes_t frames, int putidx,
snd_pcm_adpcm_state_t *states);
void snd_pcm_adpcm_encode(const snd_pcm_channel_area_t *src_areas,
snd_pcm_uframes_t src_offset,
const snd_pcm_channel_area_t *dst_areas,
snd_pcm_uframes_t dst_offset,
unsigned int channels, snd_pcm_uframes_t frames, int getidx,
snd_pcm_adpcm_state_t *states);