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audio: add VOICE_VOLUME ctl

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Add a new PCM control operation to update the stream volume on the
audio backend.  The argument given is a SWVoiceOut/SWVoiceIn.

v4:
- verified other backends didn't fail/assert on this new control
  they randomly return 0 or -1, but we ignore return value.

Signed-off-by: Marc-Andr? Lureau <marcandre.lureau@redhat.com>
Signed-off-by: malc <av1474@comtv.ru>
This commit is contained in:
Marc-André Lureau 2012-04-17 14:32:35 +02:00 committed by malc
parent 158fd3ce98
commit 6c95ab94f9
2 changed files with 13 additions and 0 deletions
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12
audio/audio.c
View File

@ -2053,17 +2053,29 @@ void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque)
void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol)
{
if (sw) {
HWVoiceOut *hw = sw->hw;
sw->vol.mute = mute;
sw->vol.l = nominal_volume.l * lvol / 255;
sw->vol.r = nominal_volume.r * rvol / 255;
if (hw->pcm_ops->ctl_out) {
hw->pcm_ops->ctl_out (hw, VOICE_VOLUME, sw);
}
}
}
void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol)
{
if (sw) {
HWVoiceIn *hw = sw->hw;
sw->vol.mute = mute;
sw->vol.l = nominal_volume.l * lvol / 255;
sw->vol.r = nominal_volume.r * rvol / 255;
if (hw->pcm_ops->ctl_in) {
hw->pcm_ops->ctl_in (hw, VOICE_VOLUME, sw);
}
}
}

1
audio/audio_int.h
View File

@ -231,6 +231,7 @@ void audio_run (const char *msg);
#define VOICE_ENABLE 1
#define VOICE_DISABLE 2
#define VOICE_VOLUME 3
static inline int audio_ring_dist (int dst, int src, int len)
{