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authorMarc-André Lureau <marcandre.lureau@gmail.com>2012-04-17 14:32:36 +0200
committermalc <av1474@comtv.ru>2012-04-17 16:57:57 +0400
commitc01b2456238f73964876471452e27d4aad7900fb (patch)
tree828e8798ffc13fac2972657332fdc9bccd7ee965 /audio
parent6c95ab94f9f7e8d3156e4e16ecc7c499e141bb1a (diff)
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audio: don't apply volume effect if backend has VOICE_VOLUME_CAP
If the audio backend is capable of volume control, don't apply software volume (mixeng_volume ()), but instead, rely on backend volume control. This will allow guest to have full range volume control. Signed-off-by: Marc-Andr? Lureau <marcandre.lureau@redhat.com> Signed-off-by: malc <av1474@comtv.ru>
Diffstat (limited to 'audio')
-rw-r--r--audio/audio.c9
-rw-r--r--audio/audio_int.h5
-rw-r--r--audio/audio_template.h2
3 files changed, 14 insertions, 2 deletions
diff --git a/audio/audio.c b/audio/audio.c
index d76c342..bd9237e 100644
--- a/audio/audio.c
+++ b/audio/audio.c
@@ -957,7 +957,9 @@ int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size)
total += isamp;
}
- mixeng_volume (sw->buf, ret, &sw->vol);
+ if (!(hw->ctl_caps & VOICE_VOLUME_CAP)) {
+ mixeng_volume (sw->buf, ret, &sw->vol);
+ }
sw->clip (buf, sw->buf, ret);
sw->total_hw_samples_acquired += total;
@@ -1041,7 +1043,10 @@ int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size)
swlim = audio_MIN (swlim, samples);
if (swlim) {
sw->conv (sw->buf, buf, swlim);
- mixeng_volume (sw->buf, swlim, &sw->vol);
+
+ if (!(sw->hw->ctl_caps & VOICE_VOLUME_CAP)) {
+ mixeng_volume (sw->buf, swlim, &sw->vol);
+ }
}
while (swlim) {
diff --git a/audio/audio_int.h b/audio/audio_int.h
index 117f95e..b9b0676 100644
--- a/audio/audio_int.h
+++ b/audio/audio_int.h
@@ -82,6 +82,7 @@ typedef struct HWVoiceOut {
int samples;
QLIST_HEAD (sw_out_listhead, SWVoiceOut) sw_head;
QLIST_HEAD (sw_cap_listhead, SWVoiceCap) cap_head;
+ int ctl_caps;
struct audio_pcm_ops *pcm_ops;
QLIST_ENTRY (HWVoiceOut) entries;
} HWVoiceOut;
@@ -101,6 +102,7 @@ typedef struct HWVoiceIn {
int samples;
QLIST_HEAD (sw_in_listhead, SWVoiceIn) sw_head;
+ int ctl_caps;
struct audio_pcm_ops *pcm_ops;
QLIST_ENTRY (HWVoiceIn) entries;
} HWVoiceIn;
@@ -150,6 +152,7 @@ struct audio_driver {
int max_voices_in;
int voice_size_out;
int voice_size_in;
+ int ctl_caps;
};
struct audio_pcm_ops {
@@ -233,6 +236,8 @@ void audio_run (const char *msg);
#define VOICE_DISABLE 2
#define VOICE_VOLUME 3
+#define VOICE_VOLUME_CAP (1 << VOICE_VOLUME)
+
static inline int audio_ring_dist (int dst, int src, int len)
{
return (dst >= src) ? (dst - src) : (len - src + dst);
diff --git a/audio/audio_template.h b/audio/audio_template.h
index e62a713..519432a 100644
--- a/audio/audio_template.h
+++ b/audio/audio_template.h
@@ -263,6 +263,8 @@ static HW *glue (audio_pcm_hw_add_new_, TYPE) (struct audsettings *as)
}
hw->pcm_ops = drv->pcm_ops;
+ hw->ctl_caps = drv->ctl_caps;
+
QLIST_INIT (&hw->sw_head);
#ifdef DAC
QLIST_INIT (&hw->cap_head);