Class MMMFAudioOutput

class MMMFAudioOutput : public MDataSink;

Description

Interface class to allow dynamic linkage to CMMFAudioOutput.

Derivation

• MDataSink - Abstract class representing a data sink.

• MMMFAudioOutput - Interface class to allow dynamic linkage to CMMFAudioOutput.

Members

Defined in MMMFAudioOutput:

• BytesPlayed()Returns the number of bytes played.
• HWEmptyBufferL(CMMFBuffer *,MDataSource *)Gets audio from hardware device abstracted MMFDevsound (not used).
• MMMFAudioOutput()Protected constructor.
• NewAudioOutputL(TUid,const TDesC8 &)Gets a new audio output object.
• SoundDevice()Returns the sound device.

Inherited from MDataSink:

• BufferFilledL(CMMFBuffer *)Function called by a data source to pass back a filled buffer to the sink.
• CanCreateSinkBuffer()Function to indicate whether the data sink can create a buffer.
• ConstructSinkL(const TDesC8 &)Performs any sink construction dependant on the sink construction initialisation...
• CreateSinkBufferL(TMediaId,TBool &)Returns a buffer created by the data sink.
• DataSinkType()constReturns the UID identifying the type of data sink.
• EmptyBufferL(CMMFBuffer *,MDataSource *,TMediaId)Method called by a MDataSource to request the data sink to empty aBuffer of data...
• MDataSink(TUid)Protected constructor.
• NegotiateL(MDataSource &)Allows the data sink to negotiate with a data source.
• NewSinkL(TUid,const TDesC8 &)Instantiates a new data sink.
• SetSinkDataTypeCode(TFourCC,TMediaId)Sets the data type as a fourCC code for the data sink.
• SetSinkPrioritySettings(const TMMFPrioritySettings &)Sets the sink priority settings.
• SinkCustomCommand(TMMFMessage &)Calls a sink specific custom command.
• SinkDataTypeCode(TMediaId)Returns the data type as a fourCC code of the data sink.
• SinkPauseL()Function to 'pause' the data sink.
• SinkPlayL()Function 'play' the data sink.
• SinkPrimeL()Function to 'prime' the data sink.
• SinkStopL()Function to 'stop' the data sink.
• SinkThreadLogoff()Function to 'logoff' the data sink from the same thread that sink consumes data ...
• SinkThreadLogon(MAsyncEventHandler &)Function to 'logon' the data sink to the same thread that sink will be consuming...

protected: inline MMMFAudioOutput();

Description

Protected constructor.

static inline MMMFAudioOutput* NewAudioOutputL(TUid aImplementationUid, const TDesC8 &aInitData);

Description

Gets a new audio output object.

Parameters

TUid aImplementationUid The implementation UID. const TDesC8 &aInitData The initialisation data.

Return value

MMMFAudioOutput * The audio output object.

virtual CMMFDevSound& SoundDevice()=0;

Description

Returns the sound device.

Accessor function exposing public CMMFDevsound methods.

Return value

CMMFDevSound & A reference to a CMMFDevSound objector.

virtual TInt BytesPlayed()=0;

Description

Returns the number of bytes played.

Return value

TInt The number of bytes played. If 16-bit divide this number returned by 2 to get word length.

Interface status:

deprecated

virtual void HWEmptyBufferL(CMMFBuffer *aBuffer, MDataSource *aSupplier)=0;

Description

Gets audio from hardware device abstracted MMFDevsound (not used).

Parameters

CMMFBuffer *aBuffer The data to read in from a Hardware Device MDataSource *aSupplier The MDataSink consuming the data contained in aBuffer.