void RCInitFrameQP(AVCEncObject *encvid)
{
AVCCommonObj *video = encvid->common;
AVCRateControl *rateCtrl = encvid->rateCtrl;
AVCPicParamSet *picParam = video->currPicParams;
MultiPass *pMP = rateCtrl->pMP;
if (rateCtrl->rcEnable == TRUE)
{
/* frame layer rate control */
if (rateCtrl->encoded_frames == 0)
{
video->QPy = rateCtrl->Qc = rateCtrl->initQP;
}
else
{
calculateQuantizer_Multipass(encvid, video, rateCtrl, pMP);
video->QPy = rateCtrl->Qc;
}
rateCtrl->NumberofHeaderBits = 0;
rateCtrl->NumberofTextureBits = 0;
rateCtrl->numFrameBits = 0; // reset
/* update pMP->framePos */
if (++pMP->framePos == pMP->frameRange) pMP->framePos = 0;
if (rateCtrl->T == 0)
{
pMP->counter_BTdst = (int)(rateCtrl->frame_rate * 7.5 + 0.5); /* 0.75s time frame */
pMP->counter_BTdst = AVC_MIN(pMP->counter_BTdst, (int)(rateCtrl->max_BitVariance_num / 2 * 0.40)); /* 0.75s time frame may go beyond VBV buffer if we set the buffer size smaller than 0.75s */
pMP->counter_BTdst = AVC_MAX(pMP->counter_BTdst, (int)((rateCtrl->Bs / 2 - rateCtrl->VBV_fullness) * 0.30 / (rateCtrl->TMN_TH / 10.0) + 0.5)); /* At least 30% of VBV buffer size/2 */
pMP->counter_BTdst = AVC_MIN(pMP->counter_BTdst, 20); /* Limit the target to be smaller than 3C */
pMP->target_bits = rateCtrl->T = rateCtrl->TMN_TH = (int)(rateCtrl->TMN_TH * (1.0 + pMP->counter_BTdst * 0.1));
pMP->diff_counter = pMP->counter_BTdst;
}
/* collect the necessary data: target bits, actual bits, mad and QP */
pMP->target_bits = rateCtrl->T;
pMP->QP = video->QPy;
pMP->mad = (OsclFloat)rateCtrl->totalSAD / video->PicSizeInMbs; //ComputeFrameMAD(video, rateCtrl);
if (pMP->mad < MAD_MIN) pMP->mad = MAD_MIN; /* MAD_MIN is defined as 1 in mp4def.h */
pMP->bitrate = rateCtrl->bitRate; /* calculated in RCVopQPSetting */
pMP->framerate = rateCtrl->frame_rate;
/* first pass encoding */
pMP->nRe_Quantized = 0;
} // rcEnable
else
{
video->QPy = rateCtrl->initQP;
}
// printf(" %d ",video->QPy);
if (video->CurrPicNum == 0 && encvid->outOfBandParamSet == FALSE)
{
picParam->pic_init_qs_minus26 = 0;
picParam->pic_init_qp_minus26 = video->QPy - 26;
}
// need this for motion estimation
encvid->lambda_mode = QP2QUANT[AVC_MAX(0, video->QPy-SHIFT_QP)];
encvid->lambda_motion = LAMBDA_FACTOR(encvid->lambda_mode);
return ;
}
PV_STATUS RC_VopQPSetting(VideoEncData *video, rateControl *prc[])
{
Int currLayer = video->currLayer;
Vol *currVol = video->vol[currLayer];
Vop *currVop = video->currVop;
#ifdef TEST_MBBASED_QP
int i;
#endif
rateControl *rc = video->rc[currLayer];
MultiPass *pMP = video->pMP[currLayer];
OSCL_UNUSED_ARG(prc);
if (video->encParams->RC_Type == CONSTANT_Q)
{
M4VENC_MEMSET(video->QPMB, currVop->quantizer, sizeof(UChar)*currVol->nTotalMB);
return PV_SUCCESS;
}
else
{
if (video->rc[currLayer]->encoded_frames == 0) /* rc[currLayer]->totalFrameNumber*/
{
M4VENC_MEMSET(video->QPMB, currVop->quantizer, sizeof(UChar)*currVol->nTotalMB);
video->rc[currLayer]->Qc = video->encParams->InitQuantIvop[currLayer];
}
else
{
calculateQuantizer_Multipass((void*) video);
currVop->quantizer = video->rc[currLayer]->Qc;
#ifdef TEST_MBBASED_QP
i = currVol->nTotalMB; /* testing changing QP at MB level */
while (i)
{
i--;
video->QPMB[i] = (i & 1) ? currVop->quantizer - 1 : currVop->quantizer + 1;
}
#else
M4VENC_MEMSET(video->QPMB, currVop->quantizer, sizeof(UChar)*currVol->nTotalMB);
#endif
}
video->header_bits = 0;
}
/* update pMP->framePos */
if (++pMP->framePos == pMP->frameRange) pMP->framePos = 0;
if (rc->T == 0)
{
pMP->counter_BTdst = (Int)(video->encParams->LayerFrameRate[video->currLayer] * 7.5 + 0.5); /* 0.75s time frame */
pMP->counter_BTdst = PV_MIN(pMP->counter_BTdst, (Int)(rc->max_BitVariance_num / 2 * 0.40)); /* 0.75s time frame may go beyond VBV buffer if we set the buffer size smaller than 0.75s */
pMP->counter_BTdst = PV_MAX(pMP->counter_BTdst, (Int)((rc->Bs / 2 - rc->VBV_fullness) * 0.30 / (rc->TMN_TH / 10.0) + 0.5)); /* At least 30% of VBV buffer size/2 */
pMP->counter_BTdst = PV_MIN(pMP->counter_BTdst, 20); /* Limit the target to be smaller than 3C */
pMP->target_bits = rc->T = rc->TMN_TH = (Int)(rc->TMN_TH * (1.0 + pMP->counter_BTdst * 0.1));
pMP->diff_counter = pMP->counter_BTdst;
}
/* collect the necessary data: target bits, actual bits, mad and QP */
pMP->target_bits = rc->T;
pMP->QP = currVop->quantizer;
pMP->mad = video->sumMAD / (float)currVol->nTotalMB;
if (pMP->mad < MAD_MIN) pMP->mad = MAD_MIN; /* MAD_MIN is defined as 1 in mp4def.h */
pMP->bitrate = rc->bitrate; /* calculated in RCVopQPSetting */
pMP->framerate = rc->framerate;
/* first pass encoding */
pMP->nRe_Quantized = 0;
return PV_SUCCESS;
}
