summaryrefslogtreecommitdiffstats
path: root/libvideoeditor/lvpp/VideoEditorBGAudioProcessing.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'libvideoeditor/lvpp/VideoEditorBGAudioProcessing.cpp')
-rwxr-xr-xlibvideoeditor/lvpp/VideoEditorBGAudioProcessing.cpp295
1 files changed, 0 insertions, 295 deletions
diff --git a/libvideoeditor/lvpp/VideoEditorBGAudioProcessing.cpp b/libvideoeditor/lvpp/VideoEditorBGAudioProcessing.cpp
deleted file mode 100755
index 0c12aac..0000000
--- a/libvideoeditor/lvpp/VideoEditorBGAudioProcessing.cpp
+++ /dev/null
@@ -1,295 +0,0 @@
-/*
- * 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.
- */
-
-#include <inttypes.h>
-
-//#define LOG_NDEBUG 0
-#define LOG_TAG "VideoEditorBGAudioProcessing"
-#include <utils/Log.h>
-#include "VideoEditorBGAudioProcessing.h"
-
-namespace android {
-
-VideoEditorBGAudioProcessing::VideoEditorBGAudioProcessing() {
- ALOGV("Constructor");
-
- mAudVolArrIndex = 0;
- mDoDucking = 0;
- mDucking_enable = 0;
- mDucking_lowVolume = 0;
- mDucking_threshold = 0;
- mDuckingFactor = 0;
-
- mBTVolLevel = 0;
- mPTVolLevel = 0;
-
- mIsSSRCneeded = 0;
- mChannelConversion = 0;
-
- mBTFormat = MONO_16_BIT;
-
- mInSampleRate = 8000;
- mOutSampleRate = 16000;
- mPTChannelCount = 2;
- mBTChannelCount = 1;
-}
-
-M4OSA_Int32 VideoEditorBGAudioProcessing::mixAndDuck(
- void *primaryTrackBuffer,
- void *backgroundTrackBuffer,
- void *outBuffer) {
-
- ALOGV("mixAndDuck: track buffers (primary: %p and background: %p) "
- "and out buffer %p",
- primaryTrackBuffer, backgroundTrackBuffer, outBuffer);
-
- M4AM_Buffer16* pPrimaryTrack = (M4AM_Buffer16*)primaryTrackBuffer;
- M4AM_Buffer16* pBackgroundTrack = (M4AM_Buffer16*)backgroundTrackBuffer;
- M4AM_Buffer16* pMixedOutBuffer = (M4AM_Buffer16*)outBuffer;
-
- // Output size if same as PT size
- pMixedOutBuffer->m_bufferSize = pPrimaryTrack->m_bufferSize;
-
- // Before mixing, we need to have only PT as out buffer
- memcpy((void *)pMixedOutBuffer->m_dataAddress,
- (void *)pPrimaryTrack->m_dataAddress, pMixedOutBuffer->m_bufferSize);
-
- // Initialize ducking variables
- // Initially contains the input primary track
- M4OSA_Int16 *pPTMdata2 = (M4OSA_Int16*)pMixedOutBuffer->m_dataAddress;
-
- // Contains BG track processed data(like channel conversion etc..
- M4OSA_Int16 *pBTMdata1 = (M4OSA_Int16*) pBackgroundTrack->m_dataAddress;
-
- // Since we need to give sample count and not buffer size
- M4OSA_UInt32 uiPCMsize = pMixedOutBuffer->m_bufferSize / 2 ;
-
- if ((mDucking_enable) && (mPTVolLevel != 0.0)) {
- M4OSA_Int32 peakDbValue = 0;
- M4OSA_Int32 previousDbValue = 0;
- M4OSA_Int16 *pPCM16Sample = (M4OSA_Int16*)pPrimaryTrack->m_dataAddress;
- const size_t n = pPrimaryTrack->m_bufferSize / sizeof(M4OSA_Int16);
-
- for (size_t loopIndex = 0; loopIndex < n; ++loopIndex) {
- if (pPCM16Sample[loopIndex] >= 0) {
- peakDbValue = previousDbValue > pPCM16Sample[loopIndex] ?
- previousDbValue : pPCM16Sample[loopIndex];
- previousDbValue = peakDbValue;
- } else {
- peakDbValue = previousDbValue > -pPCM16Sample[loopIndex] ?
- previousDbValue: -pPCM16Sample[loopIndex];
- previousDbValue = peakDbValue;
- }
- }
-
- mAudioVolumeArray[mAudVolArrIndex] = getDecibelSound(peakDbValue);
-
- // Check for threshold is done after kProcessingWindowSize cycles
- if (mAudVolArrIndex >= kProcessingWindowSize - 1) {
- mDoDucking = isThresholdBreached(
- mAudioVolumeArray, mAudVolArrIndex, mDucking_threshold);
-
- mAudVolArrIndex = 0;
- } else {
- 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 (mDoDucking) {
- if (mDuckingFactor > mDucking_lowVolume) {
- // FADE OUT BG Track
- // Increment ducking factor in total steps in factor
- // of low volume steps to reach low volume level
- mDuckingFactor -= mDucking_lowVolume;
- } else {
- mDuckingFactor = mDucking_lowVolume;
- }
- } else {
- if (mDuckingFactor < 1.0 ) {
- // FADE IN BG Track
- // Increment ducking factor in total steps of
- // low volume factor to reach orig.volume level
- mDuckingFactor += mDucking_lowVolume;
- } else {
- mDuckingFactor = 1.0;
- }
- }
- } // end if - mDucking_enable
-
-
- // Mixing logic
- ALOGV("Out of Ducking analysis uiPCMsize %d %f %f",
- mDoDucking, mDuckingFactor, mBTVolLevel);
- while (uiPCMsize-- > 0) {
-
- // Set vol factor for BT and PT
- *pBTMdata1 = (M4OSA_Int16)(*pBTMdata1*mBTVolLevel);
- *pPTMdata2 = (M4OSA_Int16)(*pPTMdata2*mPTVolLevel);
-
- // Mix the two samples
- if (mDoDucking) {
-
- // Duck the BG track to ducking factor value before mixing
- *pBTMdata1 = (M4OSA_Int16)((*pBTMdata1)*(mDuckingFactor));
-
- // mix as normal case
- *pBTMdata1 = (M4OSA_Int16)(*pBTMdata1 /2 + *pPTMdata2 /2);
- } else {
-
- *pBTMdata1 = (M4OSA_Int16)((*pBTMdata1)*(mDuckingFactor));
- *pBTMdata1 = (M4OSA_Int16)(*pBTMdata1 /2 + *pPTMdata2 /2);
- }
-
- M4OSA_Int32 temp;
- 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++;
- }
-
- memcpy((void *)pMixedOutBuffer->m_dataAddress,
- (void *)pBackgroundTrack->m_dataAddress,
- pBackgroundTrack->m_bufferSize);
-
- ALOGV("mixAndDuck: X");
- return M4NO_ERROR;
-}
-
-M4OSA_Int32 VideoEditorBGAudioProcessing::calculateOutResampleBufSize() {
-
- // This already takes care of channel count in mBTBuffer.m_bufferSize
- return (mOutSampleRate / mInSampleRate) * mBTBuffer.m_bufferSize;
-}
-
-void VideoEditorBGAudioProcessing::setMixParams(
- const AudioMixSettings& setting) {
- ALOGV("setMixParams");
-
- mDucking_enable = setting.lvInDucking_enable;
- mDucking_lowVolume = setting.lvInDucking_lowVolume;
- mDucking_threshold = setting.lvInDucking_threshold;
- mPTVolLevel = setting.lvPTVolLevel;
- mBTVolLevel = setting.lvBTVolLevel ;
- mBTChannelCount = setting.lvBTChannelCount;
- mPTChannelCount = setting.lvPTChannelCount;
- mBTFormat = setting.lvBTFormat;
- mInSampleRate = setting.lvInSampleRate;
- mOutSampleRate = setting.lvOutSampleRate;
-
- // Reset the following params to default values
- mAudVolArrIndex = 0;
- mDoDucking = 0;
- mDuckingFactor = 1.0;
-
- ALOGV("ducking enable 0x%x lowVolume %f threshold %" PRIu32 " "
- "fPTVolLevel %f BTVolLevel %f",
- mDucking_enable, mDucking_lowVolume, mDucking_threshold,
- mPTVolLevel, mPTVolLevel);
-
- // Decides if SSRC support is needed for this mixing
- mIsSSRCneeded = (setting.lvInSampleRate != setting.lvOutSampleRate);
- if (setting.lvBTChannelCount != setting.lvPTChannelCount){
- if (setting.lvBTChannelCount == 2){
- mChannelConversion = 1; // convert to MONO
- } else {
- mChannelConversion = 2; // Convert to STEREO
- }
- } else {
- mChannelConversion = 0;
- }
-}
-
-// Fast way to compute 10 * log(value)
-M4OSA_Int32 VideoEditorBGAudioProcessing::getDecibelSound(M4OSA_UInt32 value) {
- ALOGV("getDecibelSound: %ld", value);
-
- if (value <= 0 || value > 0x8000) {
- return 0;
- } else if (value > 0x4000) { // 32768
- return 90;
- } else if (value > 0x2000) { // 16384
- return 84;
- } else if (value > 0x1000) { // 8192
- return 78;
- } else if (value > 0x0800) { // 4028
- return 72;
- } else if (value > 0x0400) { // 2048
- return 66;
- } else if (value > 0x0200) { // 1024
- return 60;
- } else if (value > 0x0100) { // 512
- return 54;
- } else if (value > 0x0080) { // 256
- return 48;
- } else if (value > 0x0040) { // 128
- return 42;
- } else if (value > 0x0020) { // 64
- return 36;
- } else if (value > 0x0010) { // 32
- return 30;
- } else if (value > 0x0008) { // 16
- return 24;
- } else if (value > 0x0007) { // 8
- return 24;
- } else if (value > 0x0003) { // 4
- return 18;
- } else if (value > 0x0001) { // 2
- return 12;
- } else { // 1
- return 6;
- }
-}
-
-M4OSA_Bool VideoEditorBGAudioProcessing::isThresholdBreached(
- M4OSA_Int32* averageValue,
- M4OSA_Int32 storeCount,
- M4OSA_Int32 thresholdValue) {
-
- ALOGV("isThresholdBreached");
-
- int totalValue = 0;
- for (int i = 0; i < storeCount; ++i) {
- totalValue += averageValue[i];
- }
- return (totalValue / storeCount > thresholdValue);
-}
-
-}//namespace android
generated by cgit v1.1 at 2024-05-14 00:11:47 +0000