/usr/include/sipxtapi/mp/MprFromInputDevice.h is in libsipxtapi-dev 3.3.0~test17-1.
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// Copyright (C) 2007-2008 SIPez LLC.
// Licensed to SIPfoundry under a Contributor Agreement.
//
// Copyright (C) 2007-2008 SIPfoundry Inc.
// Licensed by SIPfoundry under the LGPL license.
//
// $$
///////////////////////////////////////////////////////////////////////////////
// Author: Dan Petrie <dpetrie AT SIPez DOT com>
#ifndef _MprFromInputDevice_h_
#define _MprFromInputDevice_h_
// SYSTEM INCLUDES
// APPLICATION INCLUDES
#include <mp/MpAudioResource.h>
#include <mp/MpResampler.h>
#include <mp/MpResourceMsg.h>
#include <mp/MpBridgeAlgBase.h> // For MpBridgeGain type
// DEFINES
// MACROS
// EXTERNAL FUNCTIONS
// EXTERNAL VARIABLES
// CONSTANTS
// STRUCTS
// TYPEDEFS
// FORWARD DECLARATIONS
class MpInputDeviceManager;
/**
* @brief Resource in which input media from source outside the flowgraph
* is introduced.
*
* The MprFromInputDevice get frames of media from its MpInputDeviceManager.
* The MpInputDeviceManager provides some simple buffering of frames from
* each device for a small window of time. It is the MprFromInputDevice
* responsibility to decide how current to keep (e.g. delay to prevent
* starvation) with the frames in the MpInputDeviceManager for the specific
* device from which to recieve input.
*/
class MprFromInputDevice : public MpAudioResource
{
/* //////////////////////////// PUBLIC //////////////////////////////////// */
public:
/* ============================ CREATORS ================================== */
///@name Creators
//@{
/// Default constructor
MprFromInputDevice(const UtlString& rName,
MpInputDeviceManager* deviceManager,
MpInputDeviceHandle deviceId);
/// Destructor
virtual
~MprFromInputDevice();
//@}
/* ============================ MANIPULATORS ============================== */
///@name Manipulators
//@{
/// Send message to set gain to apply to the audio.
static OsStatus setGain(const UtlString& namedResource,
OsMsgQ& fgQ,
MpBridgeGain gain);
/**<
* @param[in] gain - the gain value (multiplier) to apply to the incoming
* audio. Set to MP_BRIDGE_GAIN_PASSTHROUGH to pass audio
* unchanged.
*/
//@}
/* ============================ ACCESSORS ================================= */
///@name Accessors
//@{
//@}
/* ============================ INQUIRY =================================== */
///@name Inquiry
//@{
//@}
/* //////////////////////////// PROTECTED ///////////////////////////////// */
protected:
/* //////////////////////////// PRIVATE /////////////////////////////////// */
private:
typedef enum
{
MPRM_SET_GAIN = MpResourceMsg::MPRM_EXTERNAL_MESSAGE_START,
} AddlMsgTypes;
virtual UtlBoolean doProcessFrame(MpBufPtr inBufs[],
MpBufPtr outBufs[],
int inBufsSize,
int outBufsSize,
UtlBoolean isEnabled,
int samplesPerFrame,
int samplesPerSecond);
MpInputDeviceManager* mpInputDeviceManager;
UtlBoolean mFrameTimeInitialized;
MpFrameTime mPreviousFrameTime;
MpInputDeviceHandle mDeviceId;
MpResamplerBase *mpResampler;
MpBridgeGain mGain;
MpBridgeAccum *mpGainBuffer;
/// Handle resource messages for this resource.
virtual UtlBoolean handleMessage(MpResourceMsg& rMsg);
/// Actually set gain to apply to incoming audio.
virtual UtlBoolean handleSetGain(MpBridgeGain gain);
/**<
* @see setGain() for explanation of parameters.
*/
/// Copy constructor (not implemented for this class)
MprFromInputDevice(const MprFromInputDevice& rMprFromInputDevice);
/// Assignment operator (not implemented for this class)
MprFromInputDevice& operator=(const MprFromInputDevice& rhs);
};
/* ============================ INLINE METHODS ============================ */
#endif // _MprFromInputDevice_h_
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