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https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
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e61c2dddb7
fix downsampling/resampling add support for U8 samples git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@49 fefdeb5f-60dc-0310-8127-8f9354f1896f
31 lines
956 B
C
31 lines
956 B
C
#ifndef foosampleutilhfoo
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#define foosampleutilhfoo
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#include "sample.h"
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#include "memblock.h"
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#include "memchunk.h"
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#define PA_DEFAULT_SAMPLE_SPEC pa_default_sample_spec
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extern struct pa_sample_spec pa_default_sample_spec;
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#define PA_VOLUME_NORM (0x100)
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#define PA_VOLUME_MUTE (0)
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struct pa_memblock *pa_silence_memblock(struct pa_memblock* b, const struct pa_sample_spec *spec);
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void pa_silence_memchunk(struct pa_memchunk *c, const struct pa_sample_spec *spec);
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void pa_silence_memory(void *p, size_t length, const struct pa_sample_spec *spec);
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struct pa_mix_info {
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struct pa_memchunk chunk;
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uint32_t volume;
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void *userdata;
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};
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size_t pa_mix(struct pa_mix_info channels[], unsigned nchannels, void *data, size_t length, const struct pa_sample_spec *spec, uint32_t volume);
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void pa_volume_memchunk(struct pa_memchunk*c, const struct pa_sample_spec *spec, uint32_t volume);
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uint32_t pa_volume_multiply(uint32_t a, uint32_t b);
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#endif
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