libvideoeditor/lvpp/VideoEditorBGAudioProcessing.cpp - android_frameworks_av - Gitiles

 /*
  * Copyright (C) 2011 NXP Software
  * Copyright (C) 2011 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #define LOG_NDEBUG 1
 #define LOG_TAG "VideoEditorBGAudioProcessing"
 #include <utils/Log.h>
 #include "VideoEditorBGAudioProcessing.h"

 namespace android {

 VideoEditorBGAudioProcessing ::VideoEditorBGAudioProcessing() {

     LOGV("VideoEditorBGAudioProcessing:: Construct  VideoEditorBGAudioProcessing ");

     VideoEditorBGAudioProcessing::mAudVolArrIndex = 0;
     VideoEditorBGAudioProcessing::mDoDucking = 0;
     VideoEditorBGAudioProcessing::mDucking_enable = 0;
     VideoEditorBGAudioProcessing::mDucking_lowVolume = 0;
     VideoEditorBGAudioProcessing::mDucking_threshold = 0;
     VideoEditorBGAudioProcessing::mDuckingFactor = 0;

     VideoEditorBGAudioProcessing::mBTVolLevel = 0;
     VideoEditorBGAudioProcessing::mPTVolLevel = 0;

     VideoEditorBGAudioProcessing::mIsSSRCneeded = 0;
     VideoEditorBGAudioProcessing::mChannelConversion = 0;

     VideoEditorBGAudioProcessing::mBTFormat = MONO_16_BIT;

     VideoEditorBGAudioProcessing::mInSampleRate = 8000;
     VideoEditorBGAudioProcessing::mOutSampleRate = 16000;
     VideoEditorBGAudioProcessing::mPTChannelCount = 2;
     VideoEditorBGAudioProcessing::mBTChannelCount = 1;
 }

 M4OSA_Int32 VideoEditorBGAudioProcessing::veProcessAudioMixNDuck(
         void *pPTBuffer, void *pBTBuffer, void *pOutBuffer) {

     M4AM_Buffer16* pPrimaryTrack   = (M4AM_Buffer16*)pPTBuffer;
     M4AM_Buffer16* pBackgroundTrack = (M4AM_Buffer16*)pBTBuffer;
     M4AM_Buffer16* pMixedOutBuffer  = (M4AM_Buffer16*)pOutBuffer;

     LOGV("VideoEditorBGAudioProcessing::lvProcessAudioMixNDuck \
      pPTBuffer 0x%x pBTBuffer 0x%x pOutBuffer 0x%x", pPTBuffer,
       pBTBuffer, pOutBuffer);

     M4OSA_ERR result = M4NO_ERROR;
     M4OSA_Int16 *pBTMdata1;
     M4OSA_Int16 *pPTMdata2;
     M4OSA_UInt32 uiPCMsize;

     // Ducking variable
     M4OSA_UInt16 loopIndex = 0;
     M4OSA_Int16 *pPCM16Sample = M4OSA_NULL;
     M4OSA_Int32 peakDbValue = 0;
     M4OSA_Int32 previousDbValue = 0;
     M4OSA_UInt32 i;

     // Output size if same as PT size
     pMixedOutBuffer->m_bufferSize = pPrimaryTrack->m_bufferSize;

     // Before mixing, we need to have only PT as out buffer
     M4OSA_memcpy((M4OSA_MemAddr8)pMixedOutBuffer->m_dataAddress,
      (M4OSA_MemAddr8)pPrimaryTrack->m_dataAddress, pMixedOutBuffer->m_bufferSize);

     // Initially contains the input primary track
     pPTMdata2 = (M4OSA_Int16*)pMixedOutBuffer->m_dataAddress;
     // Contains BG track processed data(like channel conversion etc..
     pBTMdata1 = (M4OSA_Int16*) pBackgroundTrack->m_dataAddress;

     // Since we need to give sample count and not buffer size
     uiPCMsize = pMixedOutBuffer->m_bufferSize/2 ;

     if((this->mDucking_enable) && (this->mPTVolLevel != 0.0)) {
         // LOGI("VideoEditorBGAudioProcessing:: In Ducking analysis ");
         loopIndex = 0;
         peakDbValue = 0;
         previousDbValue = peakDbValue;

         pPCM16Sample = (M4OSA_Int16*)pPrimaryTrack->m_dataAddress;

         while( loopIndex < pPrimaryTrack->m_bufferSize/sizeof(M4OSA_Int16))
         {
             if (pPCM16Sample[loopIndex] >= 0){
                 peakDbValue = previousDbValue > pPCM16Sample[loopIndex] ?
                  previousDbValue : pPCM16Sample[loopIndex];
                 previousDbValue = peakDbValue;
             }else{
                 peakDbValue = previousDbValue > -pPCM16Sample[loopIndex] ?
                  previousDbValue: -pPCM16Sample[loopIndex];
                 previousDbValue = peakDbValue;
             }
             loopIndex++;
         }

         this->mAudioVolumeArray[this->mAudVolArrIndex] =
          getDecibelSound(peakDbValue);

         LOGV("VideoEditorBGAudioProcessing:: getDecibelSound %d",
          this->mAudioVolumeArray[this->mAudVolArrIndex]);

         // WINDOW_SIZE is 10 by default
         // Check for threshold is done after 10 cycles
         if ( this->mAudVolArrIndex >= WINDOW_SIZE -1) {
             this->mDoDucking = isThresholdBreached(this->mAudioVolumeArray,
              this->mAudVolArrIndex,this->mDucking_threshold );

             this->mAudVolArrIndex = 0;
         } else {
             this->mAudVolArrIndex++;
         }

         //
         // Below logic controls the mixing weightage
         // for Background and Primary Tracks
         // for the duration of window under analysis,
         // to give fade-out for Background and fade-in for primary
         // Current fading factor is distributed in equal range over
         // the defined window size.
         // For a window size = 25
         // (500 ms (window under analysis) / 20 ms (sample duration))
         //

         if(this->mDoDucking){
             if ( this->mDuckingFactor > this->mDucking_lowVolume) {
                 // FADE OUT BG Track
                 // Increment ducking factor in total steps in factor
                 // of low volume steps to reach low volume level
                 this->mDuckingFactor -= (this->mDucking_lowVolume);
             }
             else {
                 this->mDuckingFactor = this->mDucking_lowVolume;
             }
         } else {
             if ( this->mDuckingFactor < 1.0 ){
                 // FADE IN BG Track
                 // Increment ducking factor in total steps of
                 // low volume factor to reach orig.volume level
                 this->mDuckingFactor += (this->mDucking_lowVolume);
             }
             else{
                 this->mDuckingFactor = 1.0;
             }
         }
     } // end if - mDucking_enable


     // Mixing Logic

     LOGV("VideoEditorBGAudioProcessing:: Out of Ducking analysis uiPCMsize\
      %d %f %f", this->mDoDucking, this->mDuckingFactor,this->mBTVolLevel);

     while(uiPCMsize-->0) {

         M4OSA_Int32 temp;
         // Set vol factor for BT and PT
         *pBTMdata1 = (M4OSA_Int16)(*pBTMdata1*this->mBTVolLevel);
         *pPTMdata2 = (M4OSA_Int16)(*pPTMdata2*this->mPTVolLevel);

         // Mix the two samples
         if ( this->mDoDucking) {

             // Duck the BG track to ducking factor value before mixing
             *pBTMdata1 = (M4OSA_Int16)((*pBTMdata1)*(this->mDuckingFactor));

             // mix as normal case
             *pBTMdata1 = (M4OSA_Int16)(*pBTMdata1 /2 + *pPTMdata2 /2);
         }
         else {

             *pBTMdata1 = (M4OSA_Int16)((*pBTMdata1)*(this->mDuckingFactor));
             *pBTMdata1 = (M4OSA_Int16)(*pBTMdata1 /2 + *pPTMdata2 /2);
         }

         if ( *pBTMdata1 < 0) {
             temp = -(*pBTMdata1) * 2; // bring to original Amplitude level

             if ( temp > 32767) {
                 *pBTMdata1 = -32766; // less then max allowed value
             }
             else{
                 *pBTMdata1 = (M4OSA_Int16)(-temp);
             }
         }
         else {
             temp = (*pBTMdata1) * 2; // bring to original Amplitude level
             if ( temp > 32768) {
                 *pBTMdata1 = 32767; // less than max allowed value
             }
             else {
                 *pBTMdata1 = (M4OSA_Int16)temp;
             }
         }

         pBTMdata1++;
         pPTMdata2++;
     }
     //LOGV("VideoEditorBGAudioProcessing:: Copy final out ");
     M4OSA_memcpy((M4OSA_MemAddr8)pMixedOutBuffer->m_dataAddress,
      (M4OSA_MemAddr8)pBackgroundTrack->m_dataAddress,
       pBackgroundTrack->m_bufferSize);

     LOGV("VideoEditorBGAudioProcessing::lvProcessAudioMixNDuck EXIT");
     return result;
 }

 VideoEditorBGAudioProcessing:: ~VideoEditorBGAudioProcessing() {

  //free(VideoEditorBGAudioProcessing:: pTempBuffer);
 }

 M4OSA_Int32 VideoEditorBGAudioProcessing::calculateOutResampleBufSize() {

     M4OSA_Int32 bufSize =0;

     // This already takes care of channel count in mBTBuffer.m_bufferSize
     bufSize = (this->mOutSampleRate/this->mInSampleRate)*this->mBTBuffer.m_bufferSize;

     return bufSize;
 }

 void VideoEditorBGAudioProcessing ::veSetAudioProcessingParams(
         veAudMixSettings gInputParams) {

     LOGV("VideoEditorBGAudioProcessing:: ENTER lvSetAudioProcessingParams ");
     this->mDucking_enable       = gInputParams.lvInDucking_enable;
     this->mDucking_lowVolume    = gInputParams.lvInDucking_lowVolume;
     this->mDucking_threshold    = gInputParams.lvInDucking_threshold;

     this->mPTVolLevel           = gInputParams.lvPTVolLevel;
     this->mBTVolLevel           = gInputParams.lvBTVolLevel ;

     this->mBTChannelCount       = gInputParams.lvBTChannelCount;
     this->mPTChannelCount       = gInputParams.lvPTChannelCount;

     this->mBTFormat             = gInputParams.lvBTFormat;

     this->mInSampleRate         = gInputParams.lvInSampleRate;
     this->mOutSampleRate        = gInputParams.lvOutSampleRate;

     this->mAudVolArrIndex       = 0;
     this->mDoDucking            = 0;
     this->mDuckingFactor        = 1.0; // default

     LOGV("VideoEditorBGAudioProcessing::  ducking_enable 0x%x \
      ducking_lowVolume %f  ducking_threshold %d  fPTVolLevel %f BTVolLevel %f",
      this->mDucking_enable, this->mDucking_lowVolume, this->mDucking_threshold,
      this->mPTVolLevel, this->mPTVolLevel);

     // Following logc decides if SSRC support is needed for this mixing
     if ( gInputParams.lvInSampleRate != gInputParams.lvOutSampleRate){
         this->mIsSSRCneeded      = 1;
     }else{
         this->mIsSSRCneeded      = 0;
     }
     if( gInputParams.lvBTChannelCount != gInputParams.lvPTChannelCount){
         if (gInputParams.lvBTChannelCount == 2){
             this->mChannelConversion   = 1; // convert to MONO
         }else{
             this->mChannelConversion   = 2; // Convert to STEREO
         }
     }else{
         this->mChannelConversion   = 0;
     }
     LOGV("VideoEditorBGAudioProcessing:: EXIT veSetAudioProcessingParams ");
 }


 M4OSA_Int32 VideoEditorBGAudioProcessing:: getDecibelSound(M4OSA_UInt32 value) {

     int dbSound = 1;

     if (value == 0) return 0;

     if (value > 0x4000 && value <= 0x8000) // 32768
         dbSound = 90;
     else if (value > 0x2000 && value <= 0x4000) // 16384
         dbSound = 84;
     else if (value > 0x1000 && value <= 0x2000) // 8192
         dbSound = 78;
     else if (value > 0x0800 && value <= 0x1000) // 4028
         dbSound = 72;
     else if (value > 0x0400 && value <= 0x0800) // 2048
         dbSound = 66;
     else if (value > 0x0200 && value <= 0x0400) // 1024
         dbSound = 60;
     else if (value > 0x0100 && value <= 0x0200) // 512
         dbSound = 54;
     else if (value > 0x0080 && value <= 0x0100) // 256
         dbSound = 48;
     else if (value > 0x0040 && value <= 0x0080) // 128
         dbSound = 42;
     else if (value > 0x0020 && value <= 0x0040) // 64
         dbSound = 36;
     else if (value > 0x0010 && value <= 0x0020) // 32
         dbSound = 30;
     else if (value > 0x0008 && value <= 0x0010) //16
         dbSound = 24;
     else if (value > 0x0007 && value <= 0x0008) //8
         dbSound = 24;
     else if (value > 0x0003 && value <= 0x0007) // 4
         dbSound = 18;
     else if (value > 0x0001 && value <= 0x0003) //2
         dbSound = 12;
     else if (value > 0x000 && value <= 0x0001) // 1
         dbSound = 6;
     else
         dbSound = 0;

     return dbSound;
 }

 M4OSA_Bool VideoEditorBGAudioProcessing:: isThresholdBreached(
         M4OSA_Int32* averageValue, M4OSA_Int32 storeCount,
          M4OSA_Int32 thresholdValue) {

     M4OSA_Bool result = 0;
     int i;
     int finalValue = 0;

     for (i=0; i< storeCount;i++)
         finalValue += averageValue[i];

     finalValue = finalValue/storeCount;

     //printf ("<%d > \t  ", finalValue);

     if (finalValue > thresholdValue)
         result = M4OSA_TRUE;
     else
         result = M4OSA_FALSE;

     return result;
 }

 }//namespace android
	/*
	* Copyright (C) 2011 NXP Software
	* Copyright (C) 2011 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#define LOG_NDEBUG 1
	#define LOG_TAG "VideoEditorBGAudioProcessing"
	#include <utils/Log.h>
	#include "VideoEditorBGAudioProcessing.h"

	namespace android {

	VideoEditorBGAudioProcessing ::VideoEditorBGAudioProcessing() {

	LOGV("VideoEditorBGAudioProcessing:: Construct VideoEditorBGAudioProcessing ");

	VideoEditorBGAudioProcessing::mAudVolArrIndex = 0;
	VideoEditorBGAudioProcessing::mDoDucking = 0;
	VideoEditorBGAudioProcessing::mDucking_enable = 0;
	VideoEditorBGAudioProcessing::mDucking_lowVolume = 0;
	VideoEditorBGAudioProcessing::mDucking_threshold = 0;
	VideoEditorBGAudioProcessing::mDuckingFactor = 0;

	VideoEditorBGAudioProcessing::mBTVolLevel = 0;
	VideoEditorBGAudioProcessing::mPTVolLevel = 0;

	VideoEditorBGAudioProcessing::mIsSSRCneeded = 0;
	VideoEditorBGAudioProcessing::mChannelConversion = 0;

	VideoEditorBGAudioProcessing::mBTFormat = MONO_16_BIT;

	VideoEditorBGAudioProcessing::mInSampleRate = 8000;
	VideoEditorBGAudioProcessing::mOutSampleRate = 16000;
	VideoEditorBGAudioProcessing::mPTChannelCount = 2;
	VideoEditorBGAudioProcessing::mBTChannelCount = 1;
	}

	M4OSA_Int32 VideoEditorBGAudioProcessing::veProcessAudioMixNDuck(
	void pPTBuffer, void pBTBuffer, void *pOutBuffer) {

	M4AM_Buffer16* pPrimaryTrack = (M4AM_Buffer16*)pPTBuffer;
	M4AM_Buffer16* pBackgroundTrack = (M4AM_Buffer16*)pBTBuffer;
	M4AM_Buffer16* pMixedOutBuffer = (M4AM_Buffer16*)pOutBuffer;

	LOGV("VideoEditorBGAudioProcessing::lvProcessAudioMixNDuck \
	pPTBuffer 0x%x pBTBuffer 0x%x pOutBuffer 0x%x", pPTBuffer,
	pBTBuffer, pOutBuffer);

	M4OSA_ERR result = M4NO_ERROR;
	M4OSA_Int16 *pBTMdata1;
	M4OSA_Int16 *pPTMdata2;
	M4OSA_UInt32 uiPCMsize;

	// Ducking variable
	M4OSA_UInt16 loopIndex = 0;
	M4OSA_Int16 *pPCM16Sample = M4OSA_NULL;
	M4OSA_Int32 peakDbValue = 0;
	M4OSA_Int32 previousDbValue = 0;
	M4OSA_UInt32 i;

	// Output size if same as PT size
	pMixedOutBuffer->m_bufferSize = pPrimaryTrack->m_bufferSize;

	// Before mixing, we need to have only PT as out buffer
	M4OSA_memcpy((M4OSA_MemAddr8)pMixedOutBuffer->m_dataAddress,
	(M4OSA_MemAddr8)pPrimaryTrack->m_dataAddress, pMixedOutBuffer->m_bufferSize);

	// Initially contains the input primary track
	pPTMdata2 = (M4OSA_Int16*)pMixedOutBuffer->m_dataAddress;
	// Contains BG track processed data(like channel conversion etc..
	pBTMdata1 = (M4OSA_Int16*) pBackgroundTrack->m_dataAddress;

	// Since we need to give sample count and not buffer size
	uiPCMsize = pMixedOutBuffer->m_bufferSize/2 ;

	if((this->mDucking_enable) && (this->mPTVolLevel != 0.0)) {
	// LOGI("VideoEditorBGAudioProcessing:: In Ducking analysis ");
	loopIndex = 0;
	peakDbValue = 0;
	previousDbValue = peakDbValue;

	pPCM16Sample = (M4OSA_Int16*)pPrimaryTrack->m_dataAddress;

	while( loopIndex < pPrimaryTrack->m_bufferSize/sizeof(M4OSA_Int16))
	{
	if (pPCM16Sample[loopIndex] >= 0){
	peakDbValue = previousDbValue > pPCM16Sample[loopIndex] ?
	previousDbValue : pPCM16Sample[loopIndex];
	previousDbValue = peakDbValue;
	}else{
	peakDbValue = previousDbValue > -pPCM16Sample[loopIndex] ?
	previousDbValue: -pPCM16Sample[loopIndex];
	previousDbValue = peakDbValue;
	}
	loopIndex++;
	}

	this->mAudioVolumeArray[this->mAudVolArrIndex] =
	getDecibelSound(peakDbValue);

	LOGV("VideoEditorBGAudioProcessing:: getDecibelSound %d",
	this->mAudioVolumeArray[this->mAudVolArrIndex]);

	// WINDOW_SIZE is 10 by default
	// Check for threshold is done after 10 cycles
	if ( this->mAudVolArrIndex >= WINDOW_SIZE -1) {
	this->mDoDucking = isThresholdBreached(this->mAudioVolumeArray,
	this->mAudVolArrIndex,this->mDucking_threshold );

	this->mAudVolArrIndex = 0;
	} else {
	this->mAudVolArrIndex++;
	}

	//
	// Below logic controls the mixing weightage
	// for Background and Primary Tracks
	// for the duration of window under analysis,
	// to give fade-out for Background and fade-in for primary
	// Current fading factor is distributed in equal range over
	// the defined window size.
	// For a window size = 25
	// (500 ms (window under analysis) / 20 ms (sample duration))
	//

	if(this->mDoDucking){
	if ( this->mDuckingFactor > this->mDucking_lowVolume) {
	// FADE OUT BG Track
	// Increment ducking factor in total steps in factor
	// of low volume steps to reach low volume level
	this->mDuckingFactor -= (this->mDucking_lowVolume);
	}
	else {
	this->mDuckingFactor = this->mDucking_lowVolume;
	}
	} else {
	if ( this->mDuckingFactor < 1.0 ){
	// FADE IN BG Track
	// Increment ducking factor in total steps of
	// low volume factor to reach orig.volume level
	this->mDuckingFactor += (this->mDucking_lowVolume);
	}
	else{
	this->mDuckingFactor = 1.0;
	}
	}
	} // end if - mDucking_enable


	// Mixing Logic

	LOGV("VideoEditorBGAudioProcessing:: Out of Ducking analysis uiPCMsize\
	%d %f %f", this->mDoDucking, this->mDuckingFactor,this->mBTVolLevel);

	while(uiPCMsize-->0) {

	M4OSA_Int32 temp;
	// Set vol factor for BT and PT
	pBTMdata1 = (M4OSA_Int16)(pBTMdata1*this->mBTVolLevel);
	pPTMdata2 = (M4OSA_Int16)(pPTMdata2*this->mPTVolLevel);

	// Mix the two samples
	if ( this->mDoDucking) {

	// Duck the BG track to ducking factor value before mixing
	pBTMdata1 = (M4OSA_Int16)((pBTMdata1)*(this->mDuckingFactor));

	// mix as normal case
	pBTMdata1 = (M4OSA_Int16)(pBTMdata1 /2 + *pPTMdata2 /2);
	}
	else {

	pBTMdata1 = (M4OSA_Int16)((pBTMdata1)*(this->mDuckingFactor));
	pBTMdata1 = (M4OSA_Int16)(pBTMdata1 /2 + *pPTMdata2 /2);
	}

	if ( *pBTMdata1 < 0) {
	temp = -(pBTMdata1) 2; // bring to original Amplitude level

	if ( temp > 32767) {
	*pBTMdata1 = -32766; // less then max allowed value
	}
	else{
	*pBTMdata1 = (M4OSA_Int16)(-temp);
	}
	}
	else {
	temp = (pBTMdata1) 2; // bring to original Amplitude level
	if ( temp > 32768) {
	*pBTMdata1 = 32767; // less than max allowed value
	}
	else {
	*pBTMdata1 = (M4OSA_Int16)temp;
	}
	}

	pBTMdata1++;
	pPTMdata2++;
	}
	//LOGV("VideoEditorBGAudioProcessing:: Copy final out ");
	M4OSA_memcpy((M4OSA_MemAddr8)pMixedOutBuffer->m_dataAddress,
	(M4OSA_MemAddr8)pBackgroundTrack->m_dataAddress,
	pBackgroundTrack->m_bufferSize);

	LOGV("VideoEditorBGAudioProcessing::lvProcessAudioMixNDuck EXIT");
	return result;
	}

	VideoEditorBGAudioProcessing:: ~VideoEditorBGAudioProcessing() {

	//free(VideoEditorBGAudioProcessing:: pTempBuffer);
	}

	M4OSA_Int32 VideoEditorBGAudioProcessing::calculateOutResampleBufSize() {

	M4OSA_Int32 bufSize =0;

	// This already takes care of channel count in mBTBuffer.m_bufferSize
	bufSize = (this->mOutSampleRate/this->mInSampleRate)*this->mBTBuffer.m_bufferSize;

	return bufSize;
	}

	void VideoEditorBGAudioProcessing ::veSetAudioProcessingParams(
	veAudMixSettings gInputParams) {

	LOGV("VideoEditorBGAudioProcessing:: ENTER lvSetAudioProcessingParams ");
	this->mDucking_enable = gInputParams.lvInDucking_enable;
	this->mDucking_lowVolume = gInputParams.lvInDucking_lowVolume;
	this->mDucking_threshold = gInputParams.lvInDucking_threshold;

	this->mPTVolLevel = gInputParams.lvPTVolLevel;
	this->mBTVolLevel = gInputParams.lvBTVolLevel ;

	this->mBTChannelCount = gInputParams.lvBTChannelCount;
	this->mPTChannelCount = gInputParams.lvPTChannelCount;

	this->mBTFormat = gInputParams.lvBTFormat;

	this->mInSampleRate = gInputParams.lvInSampleRate;
	this->mOutSampleRate = gInputParams.lvOutSampleRate;

	this->mAudVolArrIndex = 0;
	this->mDoDucking = 0;
	this->mDuckingFactor = 1.0; // default

	LOGV("VideoEditorBGAudioProcessing:: ducking_enable 0x%x \
	ducking_lowVolume %f ducking_threshold %d fPTVolLevel %f BTVolLevel %f",
	this->mDucking_enable, this->mDucking_lowVolume, this->mDucking_threshold,
	this->mPTVolLevel, this->mPTVolLevel);

	// Following logc decides if SSRC support is needed for this mixing
	if ( gInputParams.lvInSampleRate != gInputParams.lvOutSampleRate){
	this->mIsSSRCneeded = 1;
	}else{
	this->mIsSSRCneeded = 0;
	}
	if( gInputParams.lvBTChannelCount != gInputParams.lvPTChannelCount){
	if (gInputParams.lvBTChannelCount == 2){
	this->mChannelConversion = 1; // convert to MONO
	}else{
	this->mChannelConversion = 2; // Convert to STEREO
	}
	}else{
	this->mChannelConversion = 0;
	}
	LOGV("VideoEditorBGAudioProcessing:: EXIT veSetAudioProcessingParams ");
	}


	M4OSA_Int32 VideoEditorBGAudioProcessing:: getDecibelSound(M4OSA_UInt32 value) {

	int dbSound = 1;

	if (value == 0) return 0;

	if (value > 0x4000 && value <= 0x8000) // 32768
	dbSound = 90;
	else if (value > 0x2000 && value <= 0x4000) // 16384
	dbSound = 84;
	else if (value > 0x1000 && value <= 0x2000) // 8192
	dbSound = 78;
	else if (value > 0x0800 && value <= 0x1000) // 4028
	dbSound = 72;
	else if (value > 0x0400 && value <= 0x0800) // 2048
	dbSound = 66;
	else if (value > 0x0200 && value <= 0x0400) // 1024
	dbSound = 60;
	else if (value > 0x0100 && value <= 0x0200) // 512
	dbSound = 54;
	else if (value > 0x0080 && value <= 0x0100) // 256
	dbSound = 48;
	else if (value > 0x0040 && value <= 0x0080) // 128
	dbSound = 42;
	else if (value > 0x0020 && value <= 0x0040) // 64
	dbSound = 36;
	else if (value > 0x0010 && value <= 0x0020) // 32
	dbSound = 30;
	else if (value > 0x0008 && value <= 0x0010) //16
	dbSound = 24;
	else if (value > 0x0007 && value <= 0x0008) //8
	dbSound = 24;
	else if (value > 0x0003 && value <= 0x0007) // 4
	dbSound = 18;
	else if (value > 0x0001 && value <= 0x0003) //2
	dbSound = 12;
	else if (value > 0x000 && value <= 0x0001) // 1
	dbSound = 6;
	else
	dbSound = 0;

	return dbSound;
	}

	M4OSA_Bool VideoEditorBGAudioProcessing:: isThresholdBreached(
	M4OSA_Int32* averageValue, M4OSA_Int32 storeCount,
	M4OSA_Int32 thresholdValue) {

	M4OSA_Bool result = 0;
	int i;
	int finalValue = 0;

	for (i=0; i< storeCount;i++)
	finalValue += averageValue[i];

	finalValue = finalValue/storeCount;

	//printf ("<%d > \t ", finalValue);

	if (finalValue > thresholdValue)
	result = M4OSA_TRUE;
	else
	result = M4OSA_FALSE;

	return result;
	}

	}//namespace android