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audio: split sample conversion and volume mixing

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Refactor the volume mixing, so it can be reused for capturing devices.
Additionally, it removes superfluous multiplications with the nominal
volume within the hardware voice code path.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: malc <av1474@comtv.ru>
This commit is contained in:
Michael Walle 2011-01-05 01:05:47 +01:00 • committed by malc
parent 0f136d9e06
commit 00e076795f
13 changed files with 52 additions and 55 deletions
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2
audio/audio_int.h
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@ -211,7 +211,7 @@ extern struct audio_driver esd_audio_driver;
extern struct audio_driver pa_audio_driver;
extern struct audio_driver spice_audio_driver;
extern struct audio_driver winwave_audio_driver;
extern struct mixeng_volume nominal_volume;
extern const struct mixeng_volume nominal_volume;
void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as);
void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len);