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volume work

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@42 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2004-06-29 20:37:24 +00:00
parent e31bac0257
commit d571be6f51
12 changed files with 203 additions and 35 deletions
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11
src/sample-util.h
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@ -8,16 +8,23 @@
extern struct pa_sample_spec default_sample_spec;
#define VOLUME_NORM (0x100)
#define VOLUME_MUTE (0)
struct memblock *silence_memblock(struct memblock* b, struct pa_sample_spec *spec);
void silence_memchunk(struct memchunk *c, struct pa_sample_spec *spec);
void silence_memory(void *p, size_t length, struct pa_sample_spec *spec);
struct mix_info {
struct memchunk chunk;
uint8_t volume;
uint32_t volume;
void *userdata;
};
size_t mix_chunks(struct mix_info channels[], unsigned nchannels, void *data, size_t length, struct pa_sample_spec *spec, uint8_t volume);
size_t mix_chunks(struct mix_info channels[], unsigned nchannels, void *data, size_t length, struct pa_sample_spec *spec, uint32_t volume);
void volume_memchunk(struct memchunk*c, struct pa_sample_spec *spec, uint32_t volume);
uint32_t volume_multiply(uint32_t a, uint32_t b);
#endif