Constructor

Destructor.

Deletes all objects and releases all resources owned by this instance.

Implements an asynchronous custom command

Cancels the initialization process of a CMMFDevSound object

Cancels the Registered Notification.

Returns the supported Audio settings ie. encoding, sample rates, mono/stereo operation, buffer size etc..

Returns the current device configuration.

Symbian constructor

Retrieves a custom interface to the device. CMMFDevSound::CBody::CustomInterface

Returns custom interface proxy object created by Proxy Custom Interface Utility.

Empties the play buffers below DevSound without causing the codec to be deleted.

Returns an integer representing the current gain.

Returns the speaker balance set for playing.

Returns the microphone gain balance set for recording.

Returns the Notification data which the client needs to resume playing.

Returns a list of the supported input datatypes that can be sent to DevSound for playing audio. The datatypes returned are those that the DevSound supports given the priority settings passed in aPrioritySettings. Note that if no supported data types are found this does not constitute failure, the function will return normally with no entries in aSupportedDataTypes.

Returns a list of the supported output dataypes that can be received from DevSound for recording audio. The datatypes returned are those that the DevSound supports given the priority settings passed in aPrioritySettings. Note that if no supported data types are found this does not constitute failure, the function will return normally with no entries in aSupportedDataTypes.

Initializes to raw audio data PCM16 and Sampling Rate of 8 KHz. On completion of Initialization, calls InitializeComplete() on aDevSoundObserver.

Initializes DevSound object for the mode aMode for processing audio data with hardware device supporting FourCC aDesiredFourCC.

Returns an integer representing the maximum gain the device supports. This is the maximum value which can be passed to CMMFDevSound::SetGain

Returns an integer representing the maximum volume device supports. This is the maximum value which can be passed to CMMFDevSound::SetVolume .

Factory function - returning instance of the class.

Temporarily Stops the ongoing operation (Play, Record, TonePlay).

Initializes the audio device and starts playing the DTMF string aDTMFString.

Plays data in the buffer at the current volume. The client should fill the buffer with audio data before calling this function. The observer gets a reference to the buffer along with the callback function BufferToBeFilled(). When playing of the audio sample is complete, successfully or otherwise, the function PlayError() on the observer is called. The last buffer of the audio stream being played should have the last buffer flag set using CMMFBuffer::SetLastBuffer(TBool) . If a subsequent attempt to play the clip is made, this flag will need resetting by the client.

Initializes audio device and starts playing a dual tone. Dual Tone is played with the specified frequencies and for the specified duration.

Initializes the audio device and starts the play process. This function queries and acquires the audio policy before initializing audio device. If there was an error during policy initialization, PlayError() function will be called on the observer with error code KErrAccessDenied, otherwise BufferToBeFilled() function will be called with a buffer reference. After reading data into the buffer reference passed, the client should call PlayData() to play data. The amount of data that can be played is specified in CMMFBuffer::RequestSize() . Any data that is read into buffer beyond this size will be ignored.

Initializes the audio device and starts playing a tone. The tone is played with the frequency and duration specified. Leaves on failure.

Initializes the audio device and starts playing a tone sequence.

Contine the process of recording. Once the buffer is filled with recorded data, the Observer gets a reference to the buffer along with the callback function BufferToBeEmptied(). After processing the buffer (copying over to a different buffer or writing to file) the client should call this function to continue the recording process.

Initializes the audio device and starts the record process. This function queries and acquires the audio policy before initializing audio device. If there was an error during policy initialization, RecordError() function will be called on the observer with error code KErrAccessDenied, otherwise BufferToBeEmptied() function will be called with a buffer reference. This buffer contains recorded or encoded data. After processing data in the buffer reference passed, the client should call RecordData() to continue recording process. The amount of data that is available is specified in CMMFBuffer::RequestSize() .

Registers the client for notification of resource avalibility.

Returns the Sample played so far

Returns the Sample recorded so far

Configure CMMFDevSound object with the settings in aConfig. Use this to set sampling rate, encoding and mono/stereo.

Defines the duration of tone on, tone off and tone pause to be used during the DTMF tone playback operation. Supported only during tone playing.

Changes the current recording gain to a specified value. The gain can be changed before or during recording and is effective immediately.

Sets the speaker balance for playing. The speaker balance can be changed before or during playback and is effective immediately.

Defines the priority settings that should be used for this instance.

Sets the microphone balance for recording. The microphone balance can be changed before or during recording and is effective immediately.

Defines the number of times the audio is to be repeated during the tone playback operation. A period of silence can follow each playing of a tone. The tone playing can be repeated indefinitely

Changes the current playback volume to a specified value. The volume can be changed before or during playback and is effective immediately.

Defines the period over which the volume level is to rise smoothly from nothing to the normal volume level. The function is only available before playing.

Stops the ongoing operation (Play, Record, TonePlay).

Implements a synchronous custom command

Returns an integer representing the current volume.

Wait for the clients to resume play back even after the default timeout expires. Unless the client cancels the notification request or completes no other client gets notification.