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sample-util: add pa_convert_size() call for converting sizes between two sample specs

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This commit is contained in:
Lennart Poettering 2009-09-09 04:27:16 +02:00
parent c2f1994968
commit 1f0904b800
2 changed files with 12 additions and 0 deletions
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10
src/pulsecore/sample-util.c
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@ -1056,3 +1056,13 @@ void pa_memchunk_sine(pa_memchunk *c, pa_mempool *pool, unsigned rate, unsigned
calc_sine(p, c->length, freq * l / rate);
pa_memblock_release(c->memblock);
}
size_t pa_convert_size(size_t size, const pa_sample_spec *from, const pa_sample_spec *to) {
pa_usec_t usec;
pa_assert(from);
pa_assert(to);
usec = pa_bytes_to_usec_round_up(size, from);
return pa_usec_to_bytes_round_up(usec, to);
}

2
src/pulsecore/sample-util.h
View file

@ -91,6 +91,8 @@ typedef void (*pa_do_volume_func_t) (void *samples, void *volumes, unsigned chan
pa_do_volume_func_t pa_get_volume_func(pa_sample_format_t f);
void pa_set_volume_func(pa_sample_format_t f, pa_do_volume_func_t func);
size_t pa_convert_size(size_t size, const pa_sample_spec *from, const pa_sample_spec *to);
#define PA_CHANNEL_POSITION_MASK_LEFT \
(PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_LEFT) \
| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_REAR_LEFT) \