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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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48
src/pcm/pcm_rate.c
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@ -31,7 +31,7 @@ typedef struct {
int16_t sample;
int sum;
unsigned int pos;
} rate_state_t;
} snd_pcm_rate_state_t;
typedef snd_pcm_uframes_t (*rate_f)(const snd_pcm_channel_area_t *src_areas,
snd_pcm_uframes_t src_offset, snd_pcm_uframes_t src_frames,
@ -40,7 +40,7 @@ typedef snd_pcm_uframes_t (*rate_f)(const snd_pcm_channel_area_t *src_areas,
unsigned int channels,
int getidx, int putidx,
unsigned int arg,
rate_state_t *states);
snd_pcm_rate_state_t *states);
typedef struct {
/* This field need to be the first */
@ -51,17 +51,17 @@ typedef struct {
rate_f func;
int sformat;
int srate;
rate_state_t *states;
snd_pcm_rate_state_t *states;
} snd_pcm_rate_t;
static snd_pcm_uframes_t resample_expand(const snd_pcm_channel_area_t *src_areas,
snd_pcm_uframes_t src_offset, snd_pcm_uframes_t src_frames,
const snd_pcm_channel_area_t *dst_areas,
snd_pcm_uframes_t dst_offset, snd_pcm_uframes_t *dst_framesp,
unsigned int channels,
int getidx, int putidx,
unsigned int get_threshold,
rate_state_t *states)
snd_pcm_uframes_t snd_pcm_rate_expand(const snd_pcm_channel_area_t *src_areas,
snd_pcm_uframes_t src_offset, snd_pcm_uframes_t src_frames,
const snd_pcm_channel_area_t *dst_areas,
snd_pcm_uframes_t dst_offset, snd_pcm_uframes_t *dst_framesp,
unsigned int channels,
int getidx, int putidx,
unsigned int get_threshold,
snd_pcm_rate_state_t *states)
{
#define GET16_LABELS
#define PUT16_LABELS
@ -136,14 +136,14 @@ static snd_pcm_uframes_t resample_expand(const snd_pcm_channel_area_t *src_areas
return src_frames1;
}
static snd_pcm_uframes_t resample_shrink(const snd_pcm_channel_area_t *src_areas,
snd_pcm_uframes_t src_offset, snd_pcm_uframes_t src_frames,
const snd_pcm_channel_area_t *dst_areas,
snd_pcm_uframes_t dst_offset, snd_pcm_uframes_t *dst_framesp,
unsigned int channels,
int getidx, int putidx,
unsigned int get_increment,
rate_state_t *states)
snd_pcm_uframes_t snd_pcm_rate_shrink(const snd_pcm_channel_area_t *src_areas,
snd_pcm_uframes_t src_offset, snd_pcm_uframes_t src_frames,
const snd_pcm_channel_area_t *dst_areas,
snd_pcm_uframes_t dst_offset, snd_pcm_uframes_t *dst_framesp,
unsigned int channels,
int getidx, int putidx,
unsigned int get_increment,
snd_pcm_rate_state_t *states)
{
#define GET16_LABELS
#define PUT16_LABELS
@ -367,13 +367,13 @@ static int snd_pcm_rate_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t * params)
src_rate = slave->rate;
dst_rate = snd_pcm_hw_param_value(params, SND_PCM_HW_PARAM_RATE, 0);
}
rate->get_idx = get_index(src_format, SND_PCM_FORMAT_S16);
rate->put_idx = put_index(SND_PCM_FORMAT_S16, dst_format);
rate->get_idx = snd_pcm_linear_get_index(src_format, SND_PCM_FORMAT_S16);
rate->put_idx = snd_pcm_linear_put_index(SND_PCM_FORMAT_S16, dst_format);
if (src_rate < dst_rate) {
rate->func = resample_expand;
rate->func = snd_pcm_rate_expand;
/* pitch is get_threshold */
} else {
rate->func = resample_shrink;
rate->func = snd_pcm_rate_shrink;
/* pitch is get_increment */
}
rate->pitch = (((u_int64_t)dst_rate * DIV) + src_rate / 2) / src_rate;
@ -412,7 +412,7 @@ static int snd_pcm_rate_init(snd_pcm_t *pcm)
for (k = 0; k < pcm->channels; ++k) {
rate->states[k].sum = 0;
rate->states[k].sample = 0;
if (rate->func == resample_expand) {
if (rate->func == snd_pcm_rate_expand) {
/* Get a sample on entry */
rate->states[k].pos = rate->pitch + DIV;
} else {