Class MMMFAudioInput

class MMMFAudioInput : public MDataSource;

Description

Interface class to allow dynamic linkage to CMMFAudioInput.

Derivation

• MDataSource - Abstract class representing a data source.

• MMMFAudioInput - Interface class to allow dynamic linkage to CMMFAudioInput.

Members

Defined in MMMFAudioInput:

• BytesPlayed()Returns the number of bytes played.
• HWFillBufferL(CMMFBuffer *,MDataSink *)Gets audio from hardware device abstracted MMFDevsound (not used).
• MMMFAudioInput()Protected constructor.
• NewAudioInputL(TUid,const TDesC8 &)Allocates and constructs an audio input object.
• SoundDevice()Returns the sound device.

Inherited from MDataSource:

• BufferEmptiedL(CMMFBuffer *)Function called by a data sink to pass back an emptied buffer to the source.
• CanCreateSourceBuffer()Function to indicate whether the data source can create a buffer.
• ConstructSourceL(const TDesC8 &)Performs any source construction dependant on the source construction initialisa...
• CreateSourceBufferL(TMediaId,CMMFBuffer &,TBool &)Returns a buffer created by the data source.
• CreateSourceBufferL(TMediaId,TBool &)Returns a buffer created by the data source
• DataSourceType()constReturns the UID identifying the type of data source.
• FillBufferL(CMMFBuffer *,MDataSink *,TMediaId)Function called by a MDataSink to request the data source to fill aBuffer with d...
• MDataSource(TUid)Protected constructor.
• NegotiateSourceL(MDataSink &)Function to allow the data source to negotiate with a data sink
• NewSourceL(TUid,const TDesC8 &)Instantiates a data source.
• SetSourceDataTypeCode(TFourCC,TMediaId)Sets the data type as a fourCC code for the data source.
• SetSourcePrioritySettings(const TMMFPrioritySettings &)Function to set the source priority settings.
• SourceCustomCommand(TMMFMessage &)Function to call a source specific custom command.
• SourceDataTypeCode(TMediaId)Returns the data type as a fourCC code of the data source.
• SourcePauseL()Function to 'pause' the data source.
• SourcePlayL()Function to 'play' the data source.
• SourcePrimeL()Function to 'prime' the data source.
• SourceSampleConvert()Indicates whether the data source supports sample rate conversion.
• SourceStopL()Function to 'stop' the data source.
• SourceThreadLogoff()Function to 'logoff' the data source from the same thread that source supplies d...
• SourceThreadLogon(MAsyncEventHandler &)Function to 'logon' the data source to the same thread that source will be suppl...

protected: inline MMMFAudioInput();

Description

Protected constructor.

static inline MMMFAudioInput* NewAudioInputL(TUid aImplementationUid, const TDesC8 &aInitData);

Description

Allocates and constructs an audio input object.

Calls MDataSource::NewSourceL(TUid,const TDesC8 &).

Parameters

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

Return value

MMMFAudioInput * A new audio input object.

virtual CMMFDevSound& SoundDevice()=0;

Description

Returns the sound device.

Return value

CMMFDevSound & A reference to a CMMFDevSound objector. Accessor function exposing public CMMFDevsound methods.

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 HWFillBufferL(CMMFBuffer *aBuffer, MDataSink *aConsumer)=0;

Description

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

Parameters

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