[PATCH 1/2] winecoreaudio: Implement per-channel volume control.

[Davide Beatrici]

From: Davide Beatrici

---
 dlls/winecoreaudio.drv/coreaudio.c | 37 ++++++++++++++++--------------
 dlls/winecoreaudio.drv/mmdevdrv.c  | 16 ++++++-------
 2 files changed, 27 insertions(+), 26 deletions(-)

diff --git a/dlls/winecoreaudio.drv/coreaudio.c b/dlls/winecoreaudio.drv/coreaudio.c
index aef678e7ca7..f9dbe448eb9 100644
--- a/dlls/winecoreaudio.drv/coreaudio.c
+++ b/dlls/winecoreaudio.drv/coreaudio.c
@@ -1665,28 +1665,31 @@ static NTSTATUS unix_set_volumes(void *args)
 {
     struct set_volumes_params *params = args;
     struct coreaudio_stream *stream = handle_get_stream(params->stream);
-    Float32 level = 1.0, tmp;
+    Float32 level = params->master_volume;
     OSStatus sc;
     UINT32 i;
+    AudioObjectPropertyAddress prop_addr = {
+        kAudioDevicePropertyVolumeScalar,
+        kAudioObjectPropertyScopeGlobal,
+        kAudioObjectPropertyElementMain
+    };

-    if(params->channel >= stream->fmt->nChannels || params->channel < -1){
-        ERR("Incorrect channel %d\n", params->channel);
-        return STATUS_SUCCESS;
-    }
+    sc = AudioObjectSetPropertyData(stream->dev_id, &prop_addr, 0, NULL, sizeof(float), &level);
+    if (sc == noErr)
+        level = 1.0f;
+    else
+        WARN("Couldn't set master volume, applying it directly to the channels: %x\n", (int)sc);

-    if(params->channel == -1){
-        for(i = 0; i < stream->fmt->nChannels; ++i){
-            tmp = params->master_volume * params->volumes[i] * params->session_volumes[i];
-            level = tmp < level ? tmp : level;
-        }
-    }else
-        level = params->master_volume * params->volumes[params->channel] *
-            params->session_volumes[params->channel];
+    for (i = 1; i <= stream->fmt->nChannels; ++i) {
+        const float vol = level * params->session_volumes[i - 1] * params->volumes[i - 1];
+
+        prop_addr.mElement = i;

-    sc = AudioUnitSetParameter(stream->unit, kHALOutputParam_Volume,
-                               kAudioUnitScope_Global, 0, level, 0);
-    if(sc != noErr)
-        WARN("Couldn't set volume: %x\n", (int)sc);
+        sc = AudioObjectSetPropertyData(stream->dev_id, &prop_addr, 0, NULL, sizeof(float), &vol);
+        if (sc != noErr) {
+            WARN("Couldn't set channel #%u volume: %x\n", i, (int)sc);
+        }
+    }

return STATUS_SUCCESS;
 }
diff --git a/dlls/winecoreaudio.drv/mmdevdrv.c b/dlls/winecoreaudio.drv/mmdevdrv.c
index 5113132f09b..6f62a69028b 100644
--- a/dlls/winecoreaudio.drv/mmdevdrv.c
+++ b/dlls/winecoreaudio.drv/mmdevdrv.c
@@ -224,7 +224,7 @@ static void get_device_guid(EDataFlow flow, const char *dev, GUID *guid)
         RegCloseKey(key);
 }

-static void set_stream_volumes(ACImpl *This, int channel)
+static void set_stream_volumes(ACImpl *This)
 {
     struct set_volumes_params params;

@@ -232,7 +232,7 @@ static void set_stream_volumes(ACImpl *This, int channel)
     params.master_volume = This->session->mute ? 0.0f : This->session->master_vol;
     params.volumes = This->vols;
     params.session_volumes = This->session->channel_vols;
-    params.channel = channel;
+    params.channel = 0;

UNIX_CALL(set_volumes, &params);
 }
@@ -689,7 +689,7 @@ end:
         This->vols = NULL;
     }else{
         This->stream = stream;
-        set_stream_volumes(This, -1);
+        set_stream_volumes(This);
     }

sessions_unlock();
@@ -1521,8 +1521,7 @@ static HRESULT WINAPI AudioStreamVolume_SetChannelVolume(

This->vols[index] = level;

-    WARN("CoreAudio doesn't support per-channel volume control\n");
-    set_stream_volumes(This, index);
+    set_stream_volumes(This);

sessions_unlock();

@@ -1566,7 +1565,7 @@ static HRESULT WINAPI AudioStreamVolume_SetAllVolumes(
     for(i = 0; i < count; ++i)
         This->vols[i] = levels[i];

-    set_stream_volumes(This, -1);
+    set_stream_volumes(This);

sessions_unlock();

@@ -1682,9 +1681,8 @@ static HRESULT WINAPI ChannelAudioVolume_SetChannelVolume(

session->channel_vols[index] = level;

-    WARN("CoreAudio doesn't support per-channel volume control\n");
     LIST_FOR_EACH_ENTRY(client, &session->clients, ACImpl, entry)
-        set_stream_volumes(client, index);
+        set_stream_volumes(client);

sessions_unlock();

@@ -1737,7 +1735,7 @@ static HRESULT WINAPI ChannelAudioVolume_SetAllVolumes(
         session->channel_vols[i] = levels[i];

LIST_FOR_EACH_ENTRY(client, &session->clients, ACImpl, entry)
-        set_stream_volumes(client, -1);
+        set_stream_volumes(client);

sessions_unlock();