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eecf602476
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@30 fefdeb5f-60dc-0310-8127-8f9354f1896f
45 lines
1 KiB
C
45 lines
1 KiB
C
#ifndef foosamplehfoo
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#define foosamplehfoo
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#include <inttypes.h>
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#include "memblock.h"
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enum sample_format {
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SAMPLE_U8,
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SAMPLE_ALAW,
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SAMPLE_ULAW,
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SAMPLE_S16LE,
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SAMPLE_S16BE,
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SAMPLE_FLOAT32
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};
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#define SAMPLE_S16NE SAMPLE_S16LE
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struct sample_spec {
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enum sample_format format;
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uint32_t rate;
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uint8_t channels;
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};
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#define DEFAULT_SAMPLE_SPEC default_sample_spec
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extern struct sample_spec default_sample_spec;
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struct memblock *silence_memblock(struct memblock* b, struct sample_spec *spec);
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void silence_memchunk(struct memchunk *c, struct sample_spec *spec);
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void silence_memory(void *p, size_t length, struct sample_spec *spec);
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struct mix_info {
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struct memchunk chunk;
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uint8_t volume;
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void *userdata;
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};
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size_t mix_chunks(struct mix_info channels[], unsigned nchannels, void *data, size_t length, struct sample_spec *spec, uint8_t volume);
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size_t bytes_per_second(struct sample_spec *spec);
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size_t sample_size(struct sample_spec *spec);
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uint32_t samples_usec(size_t length, struct sample_spec *spec);
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#endif
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