First cut at WM8750 volume control (Jan Kiszka).

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4321 c046a42c-6fe2-441c-8c8c-71466251a162

2 files changed, 23 insertions, 2 deletions

diff --git a/audio/audio.c b/audio/audio.c
index 9e7fe80443..c178584ca0 100644
--- a/audio/audio.c
+++ b/audio/audio.c
@@ -117,8 +117,8 @@ volume_t nominal_volume = {
     1.0,
     1.0
 #else
-    UINT_MAX,
-    UINT_MAX
+    1ULL << 32,
+    1ULL << 32
 #endif
 };
 
@@ -1955,3 +1955,21 @@ 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) {
+        sw->vol.mute = mute;
+        sw->vol.l = nominal_volume.l * lvol / 255;
+        sw->vol.r = nominal_volume.r * rvol / 255;
+    }
+}
+
+void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol)
+{
+    if (sw) {
+        sw->vol.mute = mute;
+        sw->vol.l = nominal_volume.l * lvol / 255;
+        sw->vol.r = nominal_volume.r * rvol / 255;
+    }
+}
diff --git a/audio/audio.h b/audio/audio.h
index ec9eee46f4..ae29b8a63c 100644
--- a/audio/audio.h
+++ b/audio/audio.h
@@ -124,6 +124,9 @@ int  AUD_is_active_out (SWVoiceOut *sw);
 void     AUD_init_time_stamp_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts);
 uint64_t AUD_get_elapsed_usec_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts);
 
+void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol);
+void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol);
+
 SWVoiceIn *AUD_open_in (
     QEMUSoundCard *card,
     SWVoiceIn *sw,