TelemetryFeedback ACTelemetryPlugin::Update()
{
TelemetryInfo info = GetNewData();
feedback.isConnected = true;
float force = info.ForceValue;
if (pluginSettings->GetIsInverted())
force = force * -1;
feedback.torquePct = force / 3;
return feedback;
}
TCodecProcessResult CAriMp3DecMmfCodec::ProcessL( const CMMFBuffer& aSrc,
CMMFBuffer& aDst )
{
PRINT_ENTRY;
// total decoded bytes added to the dst buffer
TInt totalDstBytesAdded = 0;
// total src bytes added to the internal src buffer
TInt totalSrcBytesCopied = 0;
// temporary variable to use for copying the sorce or destination data
TInt numberOfBytesCopied;
// Flag for finding valid sync
TBool syncFound = EFalse;
/**
* Process the dst buffer, update the dstBufferPos and check
* whether dst buffer is NULL or not.
*/
CMMFDataBuffer* dst = static_cast<CMMFDataBuffer*>( &aDst );
const TInt dstMaxLen = dst->Data().MaxLength();
TUint8* dstPtr = const_cast<TUint8*>( dst->Data().Ptr() );
TInt dstBufferPos = dst->Position();
/**
* Process the src buffer, update srcbuffer length, position and
* flag for last frame. check whether src buffer is NULL or not
* and check src buffer contains any data
*/
const CMMFDataBuffer* src = static_cast<const CMMFDataBuffer*>( &aSrc );
TUint8* srcPtr = const_cast <TUint8*>( src->Data().Ptr() );
TInt srcBufferLen = src->Data().Length();
TInt srcBufferPos = src->Position();
TBool lastFrame = src->LastBuffer();
if ( srcBufferLen == 0 && iInternalInputBufferResidueLen == 0 )
{
PRINT_ERR( "source buffer length is zero" );
User::Leave( KErrArgument );
}
/**
* if any destination bytes from internal destination buffer is not
* given to the dst buffer from the previous call, give it to the
* dst buffer. After this block, it ensures that no bytes are remaining
* in the internal destination buffer.
*/
if ( iInternalOutputBufferResidueLen - iInternalOutputBufferPos > 0 )
{
numberOfBytesCopied = CopyToDstBuffer( dst, totalDstBytesAdded );
if ( iInternalOutputBufferResidueLen - iInternalOutputBufferPos > 0 )
{
PRINT_EXIT;
return Result( TCodecProcessResult::EProcessIncomplete,
totalSrcBytesCopied, totalDstBytesAdded );
}
else
{
if ( ( lastFrame ) && ( srcBufferLen - srcBufferPos == 0 )&&
( iInternalInputBufferResidueLen == 0 ) )
{
iInternalOutputBufferResidueLen = 0;
iInternalInputBufferResidueLen = 0;
iInternalOutputBufferPos = 0;
PRINT_EXIT;
return Result( TCodecProcessResult::EEndOfData,
totalSrcBytesCopied, totalDstBytesAdded );
}
iInternalOutputBufferPos = 0;
iInternalOutputBufferResidueLen = 0;
}
}
/**
* copy the src buffer data into the internal buffer till internal buffer
* holds minimum bytes to process i.e KMinBytesInput. After this block, it
* ensures that internal source buffer holds KMinBytesInput.
* if it is a last frame, treat remaining residual buffer as internal
* buffer.
*/
if ( ( KMinBytesInput - iInternalInputBufferResidueLen > 0 )
&& ( srcBufferLen - srcBufferPos > 0 ) )
{
numberOfBytesCopied = CopyFromSrcBuffer( src, totalSrcBytesCopied );
}
if ( ( KMinBytesInput > iInternalInputBufferResidueLen )
&& ( !lastFrame ) )
{
PRINT_EXIT;
return Result( TCodecProcessResult::EDstNotFilled,
srcBufferLen - srcBufferPos, totalDstBytesAdded );
}
/**
* process the src buffer till destination buffer or source buffer
* or both buffers are exhausted.
*/
do
{
/**
* call seeksync to find the valid fram start offset i.e syncpos.
* update internal buffer position to that offset position if it is
* success.if it is failed then there is no valid frame start in
* the available buffer. Go for new src buffer. all bytes present
* in the internal buffer are discarded.
*/
TInt syncpos;
TInt srcBufferRemainingBytes = srcBufferLen
- srcBufferPos
- totalSrcBytesCopied;
TInt dstBufferRemainingBytes = dstMaxLen
- dstBufferPos
- totalDstBytesAdded;
TInt internalInputBufferPos = 0;
if ( KErrNone != iCodec->SeekSync(
&iInternalInputBuffer[internalInputBufferPos],
( iInternalInputBufferResidueLen - internalInputBufferPos ),
syncpos ) )
{
TCodecProcessResult result = GetNewData( src, totalSrcBytesCopied,
totalDstBytesAdded );
if ( result.iStatus == TCodecProcessResult::EDstNotFilled ||
result.iStatus == TCodecProcessResult::EEndOfData )
{
return result;
}
}
else
{
syncFound = ETrue;
internalInputBufferPos += syncpos;
}
/**
* call GetFrameInfo to find whether valid frame is present in the
* availabel buffer.if it is success and framelength is 0 then
* there is no valid frame is present, discard the present buffer
* till sync position and add new buffer.
*/
if ( syncFound )
{
TInt frameLen;
TMp3FrameInfo frameInfo;
if ( KErrNone != iCodec->GetFrameInfo(
&iInternalInputBuffer[internalInputBufferPos],
( iInternalInputBufferResidueLen - internalInputBufferPos ),
frameLen, frameInfo ) )
{
PRINT_ERR( "Decoder Getframeinfo failed" );
User::Leave( KErrGeneral );
}
if ( frameLen == 0 )
{
TCodecProcessResult result = GetNewData( src,
totalSrcBytesCopied, totalDstBytesAdded );
if ( result.iStatus == TCodecProcessResult::EDstNotFilled ||
result.iStatus == TCodecProcessResult::EEndOfData )
{
return result;
}
}
/**
* if the buffer has less than framelen then fill the internal
* sorce buffer with KMinBytesInput bytes.
*/
if ( frameLen > ( iInternalInputBufferResidueLen
- internalInputBufferPos ) )
{
if( lastFrame )
{
iInternalInputBufferResidueLen = 0;
iInternalOutputBufferResidueLen = 0;
iInternalOutputBufferPos = 0;
PRINT_EXIT;
return Result(
TCodecProcessResult::EEndOfData,
totalSrcBytesCopied, totalDstBytesAdded );
}
ShiftData( internalInputBufferPos, 0 );
numberOfBytesCopied = CopyFromSrcBuffer( src,
totalSrcBytesCopied );
internalInputBufferPos = 0;
if ( iInternalInputBufferResidueLen < KMinBytesInput )
{
PRINT_EXIT;
return Result(
TCodecProcessResult::EDstNotFilled,
totalSrcBytesCopied, totalDstBytesAdded );
}
}
/**
* initialize the variables like srcUsed and dstLen accordingly.
* call Decode.
*/
TInt srcUsed = iInternalInputBufferResidueLen
- internalInputBufferPos;
TInt dstLen = iOutFrameSize;
TInt error = iCodec->Decode(
&iInternalInputBuffer[internalInputBufferPos],
srcUsed, iInternalOutputBuffer, dstLen );
if ( KErrNone != error )
{
iInternalInputBufferResidueLen = 0;
PRINT_ERR( error );
return Result(
TCodecProcessResult::EProcessError,
totalSrcBytesCopied, totalDstBytesAdded );
}
/**
* Fill Destination Buffer
*/
iInternalOutputBufferResidueLen = dstLen;
numberOfBytesCopied = CopyToDstBuffer( dst, totalDstBytesAdded );
dstBufferRemainingBytes -= numberOfBytesCopied;
/***
* Fill Sorce Buffer
*/
internalInputBufferPos += srcUsed ;
ShiftData( internalInputBufferPos, 0 );
numberOfBytesCopied = CopyFromSrcBuffer( src,
totalSrcBytesCopied );
srcBufferRemainingBytes -= numberOfBytesCopied;
internalInputBufferPos = 0;
/***
* check four conditions if else for src and if else for dst
*/
// src buffer has available bytes to decode
if ( srcBufferRemainingBytes > 0 )
{
if ( dstBufferRemainingBytes == 0 )
{
PRINT_EXIT;
return Result( TCodecProcessResult::EProcessIncomplete,
totalSrcBytesCopied, totalDstBytesAdded );
}
}
else
{
// dst buffer has availabe space for decoded bytes
if ( dstBufferRemainingBytes > 0 )
{
// last frame of the input stream
if ( lastFrame )
{
if ( iInternalInputBufferResidueLen == 0 )
{
PRINT_EXIT;
return Result( TCodecProcessResult::EEndOfData,
totalSrcBytesCopied, totalDstBytesAdded );
}
}
else
{
PRINT_EXIT;
return Result( TCodecProcessResult::EDstNotFilled,
totalSrcBytesCopied, totalDstBytesAdded );
}
}
else
{
/**
*internal output buffer has decoded bytes which is not
*given to dst buffer.
*/
if ( iInternalOutputBufferResidueLen
- iInternalOutputBufferPos > 0 )
{
PRINT_EXIT;
return Result(
TCodecProcessResult::EProcessIncomplete,
totalSrcBytesCopied, totalDstBytesAdded );
}
// last frame of the input stream
else if ( lastFrame )
{
// if internal buffer has available bytes to decode
if ( iInternalInputBufferResidueLen > 0 )
{
PRINT_EXIT;
return Result(
TCodecProcessResult::EProcessIncomplete,
totalSrcBytesCopied, totalDstBytesAdded );
}
else
{
iInternalInputBufferResidueLen = 0;
PRINT_EXIT;
return Result(
TCodecProcessResult::EEndOfData,
totalSrcBytesCopied, totalDstBytesAdded );
}
}
else
{
PRINT_EXIT;
return Result(
TCodecProcessResult::EProcessComplete,
totalSrcBytesCopied, totalDstBytesAdded );
}
}
}
}
} while ( 1 );
}
