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Fixed serious bug in the rate plugin

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This commit is contained in:
Jaroslav Kysela 2004-02-04 18:29:41 +00:00
parent 4a4cc2a301
commit 77a9f73984
1 changed files with 19 additions and 29 deletions
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46
src/pcm/pcm_rate.c
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@ -87,22 +87,6 @@ typedef struct {
snd_pcm_channel_area_t *sareas; /* areas for splitted period (slave pcm) */
} snd_pcm_rate_t;
static int16_t initial_sample(const char *src, unsigned int getidx)
{
#define GET16_LABELS
#include "plugin_ops.h"
#undef GET16_LABELS
void *get = get16_labels[getidx];
int sample = 0;
goto *get;
#define GET16_END after_get
#include "plugin_ops.h"
#undef GET16_END
after_get:
return sample;
}
static void snd_pcm_rate_expand(const snd_pcm_channel_area_t *dst_areas,
snd_pcm_uframes_t dst_offset, snd_pcm_uframes_t dst_frames,
const snd_pcm_channel_area_t *src_areas,
@ -125,6 +109,7 @@ static void snd_pcm_rate_expand(const snd_pcm_channel_area_t *dst_areas,
int16_t sample = 0;
for (channel = 0; channel < channels; ++channel) {
//int xpos = 0;
const snd_pcm_channel_area_t *src_area = &src_areas[channel];
const snd_pcm_channel_area_t *dst_area = &dst_areas[channel];
const char *src;
@ -140,22 +125,26 @@ static void snd_pcm_rate_expand(const snd_pcm_channel_area_t *dst_areas,
src_frames1 = 0;
dst_frames1 = 0;
if (!states->u.linear.init) {
sample = initial_sample(src, getidx);
old_sample = new_sample = sample;
states->u.linear.init = 1;
goto __force_get;
} else {
states->u.linear.init = 2;
}
while (dst_frames1 < dst_frames) {
if (states->u.linear.init == 2) {
old_sample = new_sample;
__force_get:
goto *get;
#define GET16_END after_get
#include "plugin_ops.h"
#undef GET16_END
after_get:
new_sample = sample;
if (!states->u.linear.init)
old_sample = sample;
states->u.linear.init = 1;
}
sample = (((int64_t)old_sample * (int64_t)(get_threshold - pos)) + ((int64_t)new_sample * pos)) / get_threshold;
//printf("sample[%i] = %i (old_sample = %i, new_sample = %i)\n", xpos++, sample, old_sample, new_sample);
goto *put;
#define PUT16_END after_put
#include "plugin_ops.h"
@ -169,6 +158,7 @@ static void snd_pcm_rate_expand(const snd_pcm_channel_area_t *dst_areas,
src += src_step;
src_frames1++;
states->u.linear.init = 2; /* get a new sample */
//printf("new_src_pos = %i\n", (src - (char *)snd_pcm_channel_area_addr(src_area, src_offset)) / src_step);
assert(src_frames1 <= src_frames);
}
}
@ -415,8 +405,6 @@ static int snd_pcm_rate_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t * params)
return err;
if (pcm->stream == SND_PCM_STREAM_PLAYBACK) {
period_size = slave->period_size;
buffer_size = slave->buffer_size;
err = INTERNAL(snd_pcm_hw_params_get_format)(params, &src_format);
if (err < 0)
return err;
@ -426,12 +414,6 @@ static int snd_pcm_rate_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t * params)
dst_rate = slave->rate;
err = INTERNAL(snd_pcm_hw_params_get_rate)(params, &src_rate, 0);
} else {
err = INTERNAL(snd_pcm_hw_params_get_period_size)(params, &period_size, 0);
if (err < 0)
return err;
err = INTERNAL(snd_pcm_hw_params_get_buffer_size)(params, &buffer_size);
if (err < 0)
return err;
sformat = src_format = slave->format;
err = INTERNAL(snd_pcm_hw_params_get_format)(params, &dst_format);
if (err < 0)
@ -440,6 +422,12 @@ static int snd_pcm_rate_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t * params)
src_rate = slave->rate;
err = INTERNAL(snd_pcm_hw_params_get_rate)(params, &dst_rate, 0);
}
if (err < 0)
return err;
err = INTERNAL(snd_pcm_hw_params_get_period_size)(params, &period_size, 0);
if (err < 0)
return err;
err = INTERNAL(snd_pcm_hw_params_get_buffer_size)(params, &buffer_size);
if (err < 0)
return err;
err = INTERNAL(snd_pcm_hw_params_get_channels)(params, &channels);
@ -460,7 +448,8 @@ static int snd_pcm_rate_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t * params)
rate->states = malloc(channels * sizeof(*rate->states));
if (rate->states == NULL)
return -ENOMEM;
if ((buffer_size / period_size) * period_size == buffer_size)
if ((buffer_size / period_size) * period_size == buffer_size &&
(slave->buffer_size / slave->period_size) * slave->period_size == slave->buffer_size)
return 0;
rate->pareas = malloc(2 * channels * sizeof(*rate->pareas));
if (rate->pareas == NULL)
@ -1130,6 +1119,7 @@ static snd_pcm_sframes_t snd_pcm_rate_mmap_commit(snd_pcm_t *pcm,
snd_pcm_mmap_appl_forward(pcm, pcm->period_size);
snd_atomic_write_end(&rate->watom);
}
size %= pcm->period_size;
if (size > 0) {
snd_atomic_write_begin(&rate->watom);
snd_pcm_mmap_appl_forward(pcm, size);