Multimedia

Audio Management

As of 4.4.1 release QAudioInterface provides an easy way for the application developer to allow Qt Extended to control the audio of there applications.

• Control is implemented in the mediaserver (src/tools/mediaserver/qaudiointerfaceserver.cpp)
• Each QAudioInterface connects to this server instance running as part of the mediaserver

For Example:

    QAudioInput      *audio;
    QAudioInterface  *audiomgr;

First we create out audio input class.

    audio = new QAudioInput(this);

Then we create out control class using the default Media as the domain.

    audiomgr = new QAudioInterface("Media", this);

Then we tell the control class what audio it has to control, if you are not using a QAudioInput or QAudioOutput class then you will need to connect to the QAudioInterface::audioStarted() and QAudioInterface::audioStopped() signals to implement the open and close functionality.

    audiomgr->setInput(audio);

User requests to start recording.

    audiomgr->audioStart();

When all the handshaking is done, conflicting instances are stopped or paused and audio state is changed to support audio request QAudioInterface::audioStarted() signal is emitted to begin reading the input.