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#include <assert.h>
#include "sample.h"
size_t pa_sample_size(struct pa_sample_spec *spec) {
assert(spec);
size_t b = 1;
switch (spec->format) {
case PA_SAMPLE_U8:
case PA_SAMPLE_ULAW:
case PA_SAMPLE_ALAW:
b = 1;
break;
case PA_SAMPLE_S16LE:
case PA_SAMPLE_S16BE:
b = 2;
break;
case PA_SAMPLE_FLOAT32:
b = 4;
break;
default:
assert(0);
}
return b * spec->channels;
}
size_t pa_bytes_per_second(struct pa_sample_spec *spec) {
assert(spec);
return spec->rate*pa_sample_size(spec);
}
uint32_t pa_samples_usec(size_t length, struct pa_sample_spec *spec) {
assert(spec);
return (uint32_t) (((double) length /pa_sample_size(spec))/spec->rate*1000000);
}
int pa_sample_spec_valid(struct pa_sample_spec *spec) {
assert(spec);
if (!spec->rate || !spec->channels)
return 0;
if (spec->format <= 0 || spec->format >= PA_SAMPLE_MAX)
return 0;
return 1;
}
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