// Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
// All rights reserved.
// This component and the accompanying materials are made available
// under the terms of "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:
// Nokia Corporation - initial contribution.
//
// Contributors:
//
// Description:
//
/**
@file
@publishedPartner
*/
#include <bluetooth/logger.h>
#include <bluetoothav.h>
#include "gavdpinterface.h"
#ifdef __FLOG_ACTIVE
_LIT8(KLogComponent, LOG_COMPONENT_AVLIB);
#endif
#ifdef _DEBUG
PANICCATEGORY("medcodec");
#endif
TAvdtpMediaCodecCapabilities::TAvdtpMediaCodecCapabilities(
SymbianBluetoothAV::TBluetoothMediaType aMediaType,
TBluetoothMediaCodecType aCodecType,
TInt aLOSC)
: TAvdtpServiceCapability(EServiceCategoryMediaCodec, aLOSC),
iMediaType(aMediaType),
iMediaCodecType(aCodecType)
{
}
/**
Parse AVDTP protocol-domain buffer representing media codec capabilities into this
@param aPtr the buffer
@internalTechnology
*/
EXPORT_C /*virtual*/ void TAvdtpMediaCodecCapabilities::Parse(const TDesC8& aPtr)
{
ASSERT_DEBUG(aPtr.Length()>=2); // the parse broke if this is not true
iMediaType = static_cast<SymbianBluetoothAV::TBluetoothMediaType>(aPtr[0]>>4);
iMediaCodecType = static_cast<TBluetoothMediaCodecType>(aPtr[1]);
}
/**
Allocate a concrete codec capability from an AVDTP-protocol domain buffer
*/
/*static*/ TAvdtpMediaCodecCapabilities* TAvdtpMediaCodecCapabilities::AllocCodecFromPDUL(const TDesC8& aBuf)
{
const TInt KMinMediaCodecLOSC = 2;
if (aBuf.Length() < KMinMediaCodecLOSC)
{
User::Leave(KErrCorrupt);
}
using namespace SymbianBluetoothAV;
TAvdtpMediaCodecCapabilities* res = NULL;
static const TInt KMediaTypeOffset = 0;
TBluetoothMediaType type = static_cast
<TBluetoothMediaType>(aBuf[KMediaTypeOffset]);
static const TInt KMediaCodecTypeOffset = 1;
TBluetoothMediaCodecType codec = static_cast
<TBluetoothMediaCodecType>(aBuf[KMediaCodecTypeOffset]);
switch (codec)
{
// at present only support SBC
// more useful for SymbianOS as nearly always want to mix anyway
// which means decoding to PCM
// must then re-encode to something, and that might as well be SBC as mandatory
case EAudioCodecSBC:
{
res = new (ELeave) TSBCCodecCapabilities;
}
break;
// to allow other codecs just arrange for a descriptor - clients don't
// get the parsing done for free
// later could use ECOM plugins to support other codecs
// other codecs can be added compile time in the style of the SBC codec
default:
{
res = new (ELeave) TNonSBCCodecCapabilities(type, codec);
}
}
return res;
}
/**
Returns the media type
@return media type
@see SymbianBluetoothAV::TBluetoothMediaType
*/
EXPORT_C SymbianBluetoothAV::TBluetoothMediaType TAvdtpMediaCodecCapabilities::MediaType() const
{
return iMediaType;
}
/**
Returns the media codec type
@return media codec type
@see SymbianBluetoothAV::TBluetoothMediaType
*/
EXPORT_C TBluetoothMediaCodecType TAvdtpMediaCodecCapabilities::MediaCodecType() const
{
return iMediaCodecType;
}