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add support for volume manipulation

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@125 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2004-08-15 13:15:51 +00:00
parent c17545108b
commit efc3491f1f
7 changed files with 71 additions and 7 deletions
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5
polyp/sample.h
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@ -65,8 +65,13 @@ int pa_sample_spec_equal(const struct pa_sample_spec*a, const struct pa_sample_s
#define PA_SAMPLE_SNPRINT_MAX_LENGTH 32
void pa_sample_snprint(char *s, size_t l, const struct pa_sample_spec *spec);
/** Normal volume (100%) */
#define PA_VOLUME_NORM (0x100)
/** Muted volume (0%) */
#define PA_VOLUME_MUTE (0)
/** Multiply two volumes specifications, return the result. This uses PA_VOLUME_NORM as neutral element of multiplication. */
uint32_t pa_volume_multiply(uint32_t a, uint32_t b);
PA_C_DECL_END