| /*------------------------------------------------------------------------------ |
| -- -- |
| -- This software is confidential and proprietary and may be used -- |
| -- only as expressly authorized by a licensing agreement from -- |
| -- -- |
| -- Hantro Products Oy. -- |
| -- -- |
| -- (C) COPYRIGHT 2006 HANTRO PRODUCTS OY -- |
| -- ALL RIGHTS RESERVED -- |
| -- -- |
| -- The entire notice above must be reproduced -- |
| -- on all copies and should not be removed. -- |
| -- -- |
| -------------------------------------------------------------------------------- |
| */ |
| #ifndef VP8_RATE_CONTROL_H |
| #define VP8_RATE_CONTROL_H |
| |
| #include <stdint.h> |
| |
| #include "enccommon.h" |
| |
| typedef struct { |
| int32_t a1; /* model parameter */ |
| int32_t a2; /* model parameter */ |
| int32_t qp_prev; /* previous QP */ |
| int32_t qs[15]; /* quantization step size */ |
| int32_t bits[15]; /* Number of bits needed to code residual */ |
| int32_t pos; /* current position */ |
| int32_t len; /* current lenght */ |
| int32_t zero_div; /* a1 divisor is 0 */ |
| } linReg_s; |
| |
| /* Virtual buffer */ |
| typedef struct |
| { |
| int32_t bufferSize; /* size of the virtual buffer */ |
| int32_t bitRate; /* input bit rate per second */ |
| int32_t bitPerPic; /* average number of bits per picture */ |
| int32_t picTimeInc; /* timeInc since last coded picture */ |
| int32_t timeScale; /* input frame rate numerator */ |
| int32_t unitsInTic; /* input frame rate denominator */ |
| int32_t virtualBitCnt; /* virtual (channel) bit count */ |
| int32_t realBitCnt; /* real bit count */ |
| int32_t bufferOccupancy; /* number of bits in the buffer */ |
| int32_t skipFrameTarget; /* how many frames should be skipped in a row */ |
| int32_t skippedFrames; /* how many frames have been skipped in a row */ |
| int32_t bucketFullness; /* Leaky Bucket fullness */ |
| int32_t gopRem; /* Number of frames remaining in this GOP */ |
| } vp8VirtualBuffer_s; |
| |
| typedef struct |
| { |
| true_e picRc; |
| true_e picSkip; /* Frame Skip enable */ |
| true_e frameCoded; /* Frame coded or not */ |
| int32_t mbPerPic; /* Number of macroblock per picture */ |
| int32_t mbRows; /* MB rows in picture */ |
| int32_t currFrameIntra; /* Is current frame intra frame? */ |
| int32_t prevFrameIntra; /* Was previous frame intra frame? */ |
| int32_t fixedQp; /* Pic header qp when fixed */ |
| int32_t qpHdr; /* Pic header qp of current voded picture */ |
| int32_t qpMin; /* Pic header minimum qp, user set */ |
| int32_t qpMax; /* Pic header maximum qp, user set */ |
| int32_t qpHdrPrev; /* Pic header qp of previous coded picture */ |
| int32_t outRateNum; |
| int32_t outRateDenom; |
| vp8VirtualBuffer_s virtualBuffer; |
| /* for frame QP rate control */ |
| linReg_s linReg; /* Data for R-Q model */ |
| linReg_s rError; /* Rate prediction error (bits) */ |
| int32_t targetPicSize; |
| int32_t frameBitCnt; |
| /* for GOP rate control */ |
| int32_t gopQpSum; |
| int32_t gopQpDiv; |
| int32_t frameCnt; |
| int32_t gopLen; |
| int32_t intraQpDelta; |
| int32_t fixedIntraQp; |
| int32_t mbQpAdjustment; /* QP delta for MAD macroblock QP adjustment */ |
| int32_t intraPictureRate; |
| int32_t goldenPictureRate; |
| int32_t altrefPictureRate; |
| } vp8RateControl_s; |
| |
| /*------------------------------------------------------------------------------ |
| Function prototypes |
| ------------------------------------------------------------------------------*/ |
| void VP8InitRc(vp8RateControl_s* rc, uint32_t newStream); |
| void VP8BeforePicRc(vp8RateControl_s* rc, uint32_t timeInc, uint32_t frameTypeIntra); |
| void VP8AfterPicRc(vp8RateControl_s* rc, uint32_t byteCnt); |
| int32_t VP8Calculate(int32_t a, int32_t b, int32_t c); |
| #endif /* VP8_RATE_CONTROL_H */ |
| |
