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add scene change detection in workflow for screen content

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This commit is contained in:
ruil2
2014-03-28 11:30:51 +08:00
parent 62139f0981
commit 4751fe7690
2 changed files with 41 additions and 5 deletions
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1
codec/encoder/core/inc/wels_preprocess.h
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@@ -161,6 +161,7 @@ class CWelsPreProcess {
void WelsMoveMemoryWrapper (SWelsSvcCodingParam* pSvcParam, SPicture* pDstPic, const SSourcePicture* kpSrc,
const int32_t kiWidth, const int32_t kiHeight);
ESceneChangeIdc DetectSceneChangeScreen(sWelsEncCtx* pCtx,SPicture* pCurPicture);
private:
Scaled_Picture m_sScaledPicture;
SPicture* m_pLastSpatialPicture[MAX_DEPENDENCY_LAYER][2];

41
codec/encoder/core/src/wels_preprocess.cpp
View File

@@ -442,15 +442,23 @@ int32_t CWelsPreProcess::SingleLayerPreprocess (sWelsEncCtx* pCtx, const SSource
}
DownsamplePadding (pSrcPic, pDstPic, iSrcWidth, iSrcHeight, iShrinkWidth, iShrinkHeight, iTargetWidth, iTargetHeight);
if (pSvcParam->bEnableSceneChangeDetect && !pCtx->pVaa->bIdrPeriodFlag
&& !pCtx->bEncCurFrmAsIdrFlag
&& ! (pCtx->iCodingIndex & (pSvcParam->uiGopSize - 1))) {
if (pSvcParam->bEnableSceneChangeDetect && !pCtx->pVaa->bIdrPeriodFlag){
if(pSvcParam->iUsageType == SCREEN_CONTENT_REAL_TIME)
{
pCtx->pVaa->eSceneChangeIdc = (pCtx->bEncCurFrmAsIdrFlag ? LARGE_CHANGED_SCENE: DetectSceneChangeScreen(pCtx,pDstPic));
pCtx->pVaa->bSceneChangeFlag = ( LARGE_CHANGED_SCENE == pCtx->pVaa->eSceneChangeIdc);
}
else
{
if((!pCtx->bEncCurFrmAsIdrFlag )&& ! (pCtx->iCodingIndex & (pSvcParam->uiGopSize - 1))) {
SPicture* pRefPic = pCtx->pLtr[iDependencyId].bReceivedT0LostFlag ?
m_pSpatialPic[iDependencyId][m_uiSpatialLayersInTemporal[iDependencyId] +
pCtx->pVaa->uiValidLongTermPicIdx] : m_pLastSpatialPicture[iDependencyId][0];
pCtx->pVaa->bSceneChangeFlag = DetectSceneChange (pDstPic, pRefPic);
}
}
}
for (int32_t i = 0; i < pSvcParam->iSpatialLayerNum; i++) {
if (pSvcParam->sDependencyLayers[i].uiCodingIdx2TemporalId[pCtx->iCodingIndex & (pSvcParam->uiGopSize - 1)]
@@ -893,6 +901,33 @@ void CWelsPreProcess::AnalyzePictureComplexity (sWelsEncCtx* pCtx, SPicture* pCu
}
}
ESceneChangeIdc CWelsPreProcess::DetectSceneChangeScreen(sWelsEncCtx* pCtx,SPicture* pCurPicture)
{
#define STATIC_SCENE_MOTION_RATIO 0.01f
SWelsSvcCodingParam* pSvcParam = pCtx->pSvcParam;
SVAAFrameInfoExt *pVaaExt = static_cast<SVAAFrameInfoExt *>(pCtx->pVaa);
if ( NULL==pCtx || NULL == pVaaExt || NULL== pCurPicture)
{
return LARGE_CHANGED_SCENE;
}
const int32_t iTargetDid = pSvcParam->iSpatialLayerNum-1;
if ( 0!= iTargetDid )
{
return LARGE_CHANGED_SCENE;
}
ESceneChangeIdc iVaaFrameSceneChangeIdc = LARGE_CHANGED_SCENE;
SPicture **pSrcPicList = &m_pSpatialPic[iTargetDid][1];
if ( NULL==pSrcPicList )
{
return LARGE_CHANGED_SCENE;
}
return static_cast<ESceneChangeIdc>(iVaaFrameSceneChangeIdc);
}
void CWelsPreProcess::Padding (uint8_t* pSrcY, uint8_t* pSrcU, uint8_t* pSrcV, int32_t iStrideY, int32_t iStrideUV,
int32_t iActualWidth, int32_t iPaddingWidth, int32_t iActualHeight, int32_t iPaddingHeight) {
int32_t i;