1 /*

     2 * This component and the accompanying materials are made available

     3 * under the terms of the License "Eclipse Public License v1.0"

     4 * which accompanies this distribution, and is available

     5 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     6 *

     7 * Initial Contributors:

     8 * Accenture Ltd

     9 *

    10 * Contributors:

    11 *

    12 * Description: This file is a part of sound driver for Syborg adaptation.

    13 *

    14 */

    15 

    16 #ifndef VIRTIO_AUDIO_DEFS_H //x

    17 #define VIRTIO_AUDIO_DEFS_H

    18 

    19 #include <e32def.h>

    20 

    21 /// @file virtio_audio_defs.h

    22 /// most of definitions here come from VirtIo Audio spec

    23 /// and was made compatible to the qemu backend (which means diverged from spec)

    24 

    25 namespace VirtIo

    26 {

    27 namespace Audio

    28 {

    29 

    30 static const TUint KMaxSGLItemCountPerAudioBuffer = 64;

    31 

    32 enum CommandId

    33 	{

    34 	ECmdSetEndian=1,

    35 	ECmdSetChannels=2,

    36 	ECmdSetFormat=3,

    37 	ECmdSetFrequency=4,

    38 	ECmdInit=5,

    39 	ECmdRun=6

    40 	};

    41 

    42 enum FormatId

    43 	{

    44 	EFormatU8=0,

    45 	EFormatS8=1,

    46 	EFormatU16=2,

    47 	EFormatS16=3,

    48 	EFormatU32=4,

    49 	EFormatS32=5

    50 	};

    51 

    52 enum RunType

    53 	{

    54 	EDoStop = 0,

    55 	EDoRun = 1

    56 	};

    57 

    58 // note the values are opposite to what spec says

    59 enum StreamDirection

    60 	{

    61 	EDirectionPlayback = 0,

    62 	EDirectionRecord = 1

    63 	};

    64 

    65 struct TCommand

    66 	{

    67 	TUint32 iCommand;

    68 	TUint32 iStream;

    69 	TUint32 iArg;

    70 	};

    71 	

    72 struct TBufferInfo

    73 	{

    74 	TUint32 bufferSize;

    75 	TUint32 iA[3];	// not really documented

    76 	};	

    77 

    78 static const TUint32 KVirtIoPeripheralId = 0xc51d000a;

    79 static const TUint32 KVirtIoDeviceId = 0xffff;

    80 

    81 } // namespace Audio

    82 } // namespace VirtIo

    83 

    84 #endif

    85