umc_h264_avbr.h

audio-video-codecs.rar语音编解码器

/*
//
//               INTEL CORPORATION PROPRIETARY INFORMATION
//  This software is supplied under the terms of a license agreement or
//  nondisclosure agreement with Intel Corporation and may not be copied
//  or disclosed except in accordance with the terms of that agreement.
//      Copyright (c) 2006-2007 Intel Corporation. All Rights Reserved.
//
//  Purpose
//    AVBR frame adaptive bitrate control
*/

#include "ippdefs.h"
#include "umc_defs.h"
#include "umc_structures.h"
#include "umc_h264_pub.h"


namespace UMC_H264_ENCODER {


class H264_AVBR
{
protected :
    Ipp32s  mBitRate, mBitsDesiredFrame;
    Ipp64s  mBitsEncodedTotal, mBitsDesiredTotal;
    Ipp8u   *mRCqb;
    Ipp32s  mRCqh, mRCqs, mRCbf, mRClen;
    bool    mIsInit;
    Ipp32s  mQuantI, mQuantP, mQuantB, mQuantMax, mQuantPrev, mQuantOffset;
    Ipp32s  mMethod, mRCfap, mRCqap, mRCbap, mRCq;
    Ipp64f  mRCqa, mRCfa;
public :
    H264_AVBR();
    ~H264_AVBR();
    UMC::Status     Init(Ipp32s histLen, Ipp32s bitRate, Ipp64f frameRate, Ipp32s fWidth, Ipp32s fHeight, Ipp32s bitDepth, Ipp32s chromaSampling, Ipp32s alpha);
    UMC::Status     Init(Ipp32s qas, Ipp32s fas, Ipp32s bas, Ipp32s bitRate, Ipp64f frameRate, Ipp32s fWidth, Ipp32s fHeight, Ipp32s bitDepth, Ipp32s chromaSampling, Ipp32s alpha);
    void            Close();
    void            PostFrame(EnumPicCodType frameType, Ipp32s bpfEncoded);
    Ipp8u           GetQP(EnumPicCodType frameType);
    void            SetQP( EnumPicCodType frameType, Ipp32s qp );
    Ipp32s          GetInitQP(Ipp32s bitRate, Ipp64f frameRate, Ipp32s fWidth, Ipp32s fHeight, Ipp32s bitDepth, Ipp32s chromaSampling, Ipp32s alpha);
};


#define h264_Clip(a, l, r) if (a < (l)) a = l; else if (a > (r)) a = r
#define h264_ClipL(a, l) if (a < (l)) a = l
#define h264_ClipR(a, r) if (a > (r)) a = r
#define h264_Abs(a) ((a) >= 0 ? (a) : -(a))


}