--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/baseport/syborg/soundsc/virtio_audio_defs.h	Thu Mar 04 00:55:21 2010 +0000
@@ -0,0 +1,85 @@
+/*
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Accenture Ltd
+*
+* Contributors:
+*
+* Description: This file is a part of sound driver for Syborg adaptation.
+*
+*/
+
+#ifndef VIRTIO_AUDIO_DEFS_H //x
+#define VIRTIO_AUDIO_DEFS_H
+
+#include <e32def.h>
+
+/// @file virtio_audio_defs.h
+/// most of definitions here come from VirtIo Audio spec
+/// and was made compatible to the qemu backend (which means diverged from spec)
+
+namespace VirtIo
+{
+namespace Audio
+{
+
+static const TUint KMaxSGLItemCountPerAudioBuffer = 64;
+
+enum CommandId
+	{
+	ECmdSetEndian=1,
+	ECmdSetChannels=2,
+	ECmdSetFormat=3,
+	ECmdSetFrequency=4,
+	ECmdInit=5,
+	ECmdRun=6
+	};
+
+enum FormatId
+	{
+	EFormatU8=0,
+	EFormatS8=1,
+	EFormatU16=2,
+	EFormatS16=3,
+	EFormatU32=4,
+	EFormatS32=5
+	};
+
+enum RunType
+	{
+	EDoStop = 0,
+	EDoRun = 1
+	};
+
+// note the values are opposite to what spec says
+enum StreamDirection
+	{
+	EDirectionPlayback = 0,
+	EDirectionRecord = 1
+	};
+
+struct TCommand
+	{
+	TUint32 iCommand;
+	TUint32 iStream;
+	TUint32 iArg;
+	};
+	
+struct TBufferInfo
+	{
+	TUint32 bufferSize;
+	TUint32 iA[3];	// not really documented
+	};	
+
+static const TUint32 KVirtIoPeripheralId = 0xc51d000a;
+static const TUint32 KVirtIoDeviceId = 0xffff;
+
+} // namespace Audio
+} // namespace VirtIo
+
+#endif
+