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#include <sys/types.h>
#include "bbuffer.h"
#include "sydney.h"
#include "malloc.h"
#include "macro.h"
int bbuffer_init(bbuffer_t *b, unsigned nchannels, size_t sample_size) {
sa_assert(b);
sa_assert(nchannels > 0);
sa_assert(sample_size > 0);
b->nchannels = nchannels;
b->sample_size = sample_size;
if (!(b->data = sa_new0(void *, nchannels))) {
b->size = NULL;
return SA_ERROR_OOM;
}
if (!(b->size = sa_new0(size_t, nchannels))) {
sa_free(b->data);
b->data = NULL;
return SA_ERROR_OOM;
}
return SA_SUCCESS;
}
void bbuffer_done(bbuffer_t *b) {
unsigned i;
sa_assert(b);
if (b->data) {
for (i = 0; i < b->nchannels; i++)
sa_free(b->data[i]);
sa_free(b->data);
}
sa_free(b->size);
b->data = NULL;
b->size = NULL;
}
void* bbuffer_get(bbuffer_t *b, unsigned channel, size_t size, int interleave) {
sa_assert(b);
sa_assert(channel < b->nchannels);
sa_assert(size > 0);
if (interleave) {
if (!b->data[0] || size * b->nchannels > b->size[0]) {
sa_free(b->data[0]);
b->size[0] = size * b->nchannels;
if (!(b->data[0] = sa_malloc(b->size[0])))
return NULL;
}
return (uint8_t*) b->data[0] + (b->sample_size * channel);
} else {
if (!b->data[channel] || size > b->size[channel]) {
sa_free(b->data[channel]);
b->size[channel] = size;
if (!(b->data[channel] = sa_malloc(size)))
return NULL;
}
return b->data[channel];
}
}
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