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complete the encoder interface of bit rate and frame rate updating

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This commit is contained in:
sijchen 2014-01-09 09:20:35 +08:00
parent 8df056618d
commit 4999b816ab
4 changed files with 67 additions and 6 deletions
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2
codec/encoder/core/inc/extern.h
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@ -108,6 +108,8 @@ int32_t ForceCodingIDR (sWelsEncCtx* pCtx);
* SVC adjustment results in new requirement in memory blocks adjustment
*/
int32_t WelsEncoderParamAdjust (sWelsEncCtx** ppCtx, SWelsSvcCodingParam* pNew);
void WelsEncoderApplyFrameRate (SWelsSvcCodingParam* pParam);
void WelsEncoderApplyBitRate(SWelsSvcCodingParam* pParam);
int32_t FilterLTRRecoveryRequest (sWelsEncCtx* pCtx, SLTRRecoverRequest* pLTRRecoverRequest);

4
codec/encoder/core/inc/wels_const.h
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@ -90,6 +90,10 @@
#define MAX_FRAME_RATE 30 // maximal frame rate to support
#define MIN_FRAME_RATE 1 // minimal frame rate need support
#define MAX_BIT_RATE INT_MAX // maximal bit rate to support
//TODO {Sijia}: 30fps*MaxCPB in level5.1 = 30*240000*1000bits = 7 200 000 000, larger than INT_MAX which is 2147483647, but this is also very big and abnormal number, should figure out a reasonable number after discussion
#define MIN_BIT_RATE 1 // minimal bit rate need support
#define SVC_QUALITY_BASE_QP 26
#define SVC_QUALITY_DELTA_QP (-3)

47
codec/encoder/core/src/encoder_ext.cpp
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@ -423,6 +423,53 @@ int32_t ParamValidationExt (void* pParam) {
return ParamValidation (pCodingParam);
}
void WelsEncoderApplyFrameRate(SWelsSvcCodingParam* pParam)
{
SDLayerParam* pLayerParam;
const float kfEpsn = 0.000001f;
const int32_t kiNumLayer = pParam->iNumDependencyLayer;
int32_t i;
const float kfMaxFrameRate = pParam->fMaxFrameRate;
float fRatio;
float fTargetOutputFrameRate;
//set input frame rate to each layer
for (i=0;i<kiNumLayer;i++) {
pLayerParam = &(pParam->sDependencyLayers[i]);
fRatio = pLayerParam->fOutputFrameRate / pLayerParam->fInputFrameRate;
if ( (kfMaxFrameRate - pLayerParam->fInputFrameRate) > kfEpsn
|| (kfMaxFrameRate - pLayerParam->fInputFrameRate) < -kfEpsn ) {
pLayerParam->fInputFrameRate = kfMaxFrameRate;
fTargetOutputFrameRate = kfMaxFrameRate*fRatio;
pLayerParam->fOutputFrameRate = (fTargetOutputFrameRate>=6)?fTargetOutputFrameRate:(pLayerParam->fInputFrameRate);
//TODO:{Sijia} from design, there is no sense to have temporal layer when under 6fps even with such setting?
}
}
}
void WelsEncoderApplyBitRate(SWelsSvcCodingParam* pParam)
{
//TODO (Sijia): this is a temporary solution which keep the ratio between layers
//but it is also possible to fulfill the bitrate of lower layer first
SDLayerParam* pLayerParam;
const int32_t iNumLayers = pParam->iNumDependencyLayer;
int32_t i, iOrigTotalBitrate=0;
//read old BR
for (i=0;i<iNumLayers;i++) {
iOrigTotalBitrate += pParam->sDependencyLayers[i].iSpatialBitrate;
}
//write new BR
float fRatio = 0.0;
for (i=0;i<iNumLayers;i++) {
pLayerParam = &(pParam->sDependencyLayers[i]);
fRatio = pLayerParam->iSpatialBitrate/(static_cast<float>(iOrigTotalBitrate));
pLayerParam->iSpatialBitrate = static_cast<int32_t>(pParam->iTargetBitrate*fRatio);
}
}
/*!
* \brief acquire count number of layers and NALs based on configurable paramters dependency
* \pParam pCtx sWelsEncCtx*

20
codec/encoder/plus/src/welsEncoderExt.cpp
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@ -942,19 +942,27 @@ int CWelsH264SVCEncoder::SetOption (ENCODER_OPTION eOptionId, void* pOption) {
"CWelsH264SVCEncoder::SetOption():ENCODER_OPTION_FRAME_RATE, m_uiCountFrameNum= %d, m_iCspInternal= 0x%x, iValue= %d\n",
m_uiCountFrameNum, m_iCspInternal, iValue);
#endif//REC_FRAME_COUNT
m_pEncContext->pSvcParam->fMaxFrameRate = iValue;
if (iValue<=0) {
return cmInitParaError;
}
//adjust to valid range
m_pEncContext->pSvcParam->fMaxFrameRate = WELS_CLIP3 (iValue, MIN_FRAME_RATE, MAX_FRAME_RATE);
WelsEncoderApplyFrameRate (m_pEncContext->pSvcParam);
}
break;
case ENCODER_OPTION_BITRATE: { // Target bit-rate
int32_t iValue = * ((int32_t*)pOption);
#ifdef REC_FRAME_COUNT
WelsLog (m_pEncContext, WELS_LOG_INFO,
"CWelsH264SVCEncoder::SetOption():ENCODER_OPTION_BITRATE, m_uiCountFrameNum= %d, m_iCspInternal= 0x%x, iValue= %d\n",
m_uiCountFrameNum, m_iCspInternal, iValue);
"CWelsH264SVCEncoder::SetOption():ENCODER_OPTION_BITRATE, m_uiCountFrameNum= %d, m_iCspInternal= 0x%x, iValue= %d\n",
m_uiCountFrameNum, m_iCspInternal, iValue);
#endif//REC_FRAME_COUNT
m_pEncContext->pSvcParam->iTargetBitrate = iValue;
if (iValue<=0) {
return cmInitParaError;
}
//adjust to valid range
m_pEncContext->pSvcParam->iTargetBitrate = WELS_CLIP3 (iValue, MIN_BIT_RATE, MAX_BIT_RATE);
WelsEncoderApplyBitRate (m_pEncContext->pSvcParam);
}
break;
case ENCODER_OPTION_RC_MODE: { // 0:quality mode;1:bit-rate mode