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EbEntropyCoding.c
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EbEntropyCoding.c
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/*
* Copyright(c) 2018 Intel Corporation
* SPDX - License - Identifier: BSD - 2 - Clause - Patent
*/
#include <stdlib.h>
#include <string.h>
#include "EbEntropyCoding.h"
#include "EbEntropyCodingUtil.h"
#include "EbUtility.h"
#include "EbCodingUnit.h"
#include "EbSequenceControlSet.h"
#include "EbTransformUnit.h"
#include "EbDeblockingFilter.h"
#include "EbErrorCodes.h"
#include "EbErrorHandling.h"
// SSE2 Intrinsics
#include "emmintrin.h"
/*****************************
* Defines
*****************************/
#define RPS_DEFAULT_VALUE ~0u
#define ONE_BIT 32768 // Fixed-point representation of 1.0 bits
/*****************************
* Enums
*****************************/
enum COEFF_SCAN_TYPE
{
SCAN_ZIGZAG = 0, // zigzag scan
SCAN_HOR, // first scan is horizontal
SCAN_VER, // first scan is vertical
SCAN_DIAG // up-right diagonal scan
};
/*****************************
* Static consts
*****************************/
//LUT used for LPSxRange calculation
static EB_U64 maxLumaPictureSize[TOTAL_LEVEL_COUNT] =
{ 36864U, 122880U, 245760U, 552960U, 983040U, 2228224U, 2228224U, 8912896U, 8912896U, 8912896U, 35651584U, 35651584U, 35651584U };
static EB_U64 maxLumaSampleRate[TOTAL_LEVEL_COUNT] =
{ 552960U, 3686400U, 7372800U, 16588800U, 33177600U, 66846720U, 133693440U, 267386880U, 534773760U, 1069547520U, 1069547520U, 2139095040U, 4278190080U };
static EB_U32 mainTierMaxBitrate[TOTAL_LEVEL_COUNT] =
{ 128000, 1500000, 3000000, 6000000, 10000000, 12000000, 20000000, 25000000, 40000000, 60000000, 60000000, 120000000, 240000000 };
static EB_U32 highTierMaxBitrate[TOTAL_LEVEL_COUNT] =
{ 128000, 1500000, 3000000, 6000000, 10000000, 30000000, 50000000, 100000000, 160000000, 240000000, 240000000, 480000000, 800000000 };
static EB_U32 mainTierMaxCPBsize[TOTAL_LEVEL_COUNT] =
{ 350000, 150000, 3000000, 6000000, 10000000, 12000000, 20000000, 25000000, 40000000, 60000000, 60000000, 120000000, 240000000 };
static EB_U32 highTierMaxCPBsize[TOTAL_LEVEL_COUNT] =
{ 350000, 1500000, 3000000, 6000000, 10000000, 30000000, 50000000, 100000000, 160000000, 240000000, 240000000, 480000000, 800000000 };
static EB_U32 maxTileColumn[TOTAL_LEVEL_COUNT] = { 1, 1, 1, 2, 3, 5, 5, 10, 10, 10, 20, 20, 20 };
static EB_U32 maxTileRow[TOTAL_LEVEL_COUNT] = { 1, 1, 1, 2, 3, 5, 5, 11, 11, 11, 22, 22, 22 };
/************************************************
* Bac Encoder Context:Finish Function
* It is the Finish function called in finish CU
*
* input: bacEncContext pointer
*
************************************************/
static void BacEncContextFinish(BacEncContext_t *bacEncContextPtr)
{
EB_U32 carry;
carry = bacEncContextPtr->intervalLowValue >> (32 - bacEncContextPtr->bitsRemainingNum);
bacEncContextPtr->intervalLowValue &= 0xffffffffu >> bacEncContextPtr->bitsRemainingNum;
if (carry > 0 || bacEncContextPtr->tempBufferedBytesNum > 0) {
OutputBitstreamWriteByte(bacEncContextPtr->m_pcTComBitIf, (bacEncContextPtr->tempBufferedByte + carry) & 0xff);
}
while (bacEncContextPtr->tempBufferedBytesNum > 1)
{
OutputBitstreamWriteByte(bacEncContextPtr->m_pcTComBitIf, (0xff + carry) & 0xff);
bacEncContextPtr->tempBufferedBytesNum--;
}
OutputBitstreamWrite(
bacEncContextPtr->m_pcTComBitIf,
bacEncContextPtr->intervalLowValue >> 8,
24 - bacEncContextPtr->bitsRemainingNum);
}
/************************************************
* Bac Encoder Context Reset Function
************************************************/
inline static EB_ERRORTYPE ResetBacEnc(BacEncContext_t *bacEncContextPtr)
{
EB_ERRORTYPE return_error = EB_ErrorNone;
bacEncContextPtr->intervalLowValue = 0;
bacEncContextPtr->intervalRangeValue = 510;
bacEncContextPtr->bitsRemainingNum = 23;
bacEncContextPtr->tempBufferedBytesNum = 0;
bacEncContextPtr->tempBufferedByte = 0xff;
return return_error;
}
/*********************************************************************
* EncodeSplitFlag
* Encodes the split flag
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* puPtr
* input pointer to the prediction unit
*********************************************************************/
static void EncodeSplitFlag(
CabacEncodeContext_t *cabacEncodeCtxPtr,
EB_U32 cuDepth,
EB_U32 maxCuDepth,
EB_BOOL splitFlag,
EB_U32 cuOriginX,
EB_U32 cuOriginY,
NeighborArrayUnit_t *modeTypeNeighborArray,
NeighborArrayUnit_t *leafDepthNeighborArray)
{
EB_U32 modeTypeLeftNeighborIndex = GetNeighborArrayUnitLeftIndex(
modeTypeNeighborArray,
cuOriginY);
EB_U32 modeTypeTopNeighborIndex = GetNeighborArrayUnitTopIndex(
modeTypeNeighborArray,
cuOriginX);
EB_U32 leafDepthLeftNeighborIndex = GetNeighborArrayUnitLeftIndex(
leafDepthNeighborArray,
cuOriginY);
EB_U32 leafDepthTopNeighborIndex = GetNeighborArrayUnitTopIndex(
leafDepthNeighborArray,
cuOriginX);
EB_U32 contextIndex;
if (cuDepth < (maxCuDepth - 1)) {
contextIndex =
(modeTypeNeighborArray->leftArray[modeTypeLeftNeighborIndex] == (EB_U8)INVALID_MODE) ? 0 :
(leafDepthNeighborArray->leftArray[leafDepthLeftNeighborIndex] > cuDepth) ? 1 : 0;
contextIndex +=
(modeTypeNeighborArray->topArray[modeTypeTopNeighborIndex] == (EB_U8)INVALID_MODE) ? 0 :
(leafDepthNeighborArray->topArray[leafDepthTopNeighborIndex] > cuDepth) ? 1 : 0;
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
splitFlag,
&(cabacEncodeCtxPtr->contextModelEncContext.splitFlagContextModel[contextIndex]));
}
return;
}
/*********************************************************************
* EncodeSkipFlag
* Encodes the skip flag
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* puPtr
* input pointer to the prediction unit
*********************************************************************/
static void EncodeSkipFlag(
CabacEncodeContext_t *cabacEncodeCtxPtr,
EB_BOOL skipFlag,
EB_U32 cuOriginX,
EB_U32 cuOriginY,
NeighborArrayUnit_t *modeTypeNeighborArray,
NeighborArrayUnit_t *skipFlagNeighborArray)
{
EB_U32 modeTypeLeftNeighborIndex = GetNeighborArrayUnitLeftIndex(
modeTypeNeighborArray,
cuOriginY);
EB_U32 modeTypeTopNeighborIndex = GetNeighborArrayUnitTopIndex(
modeTypeNeighborArray,
cuOriginX);
EB_U32 skipFlagLeftNeighborIndex = GetNeighborArrayUnitLeftIndex(
skipFlagNeighborArray,
cuOriginY);
EB_U32 skipFlagTopNeighborIndex = GetNeighborArrayUnitTopIndex(
skipFlagNeighborArray,
cuOriginX);
EB_U32 contextIndex;
contextIndex =
(modeTypeNeighborArray->leftArray[modeTypeLeftNeighborIndex] == (EB_U8)INVALID_MODE) ? 0 :
(skipFlagNeighborArray->leftArray[skipFlagLeftNeighborIndex] == EB_TRUE) ? 1 : 0;
contextIndex +=
(modeTypeNeighborArray->topArray[modeTypeTopNeighborIndex] == (EB_U8)INVALID_MODE) ? 0 :
(skipFlagNeighborArray->topArray[skipFlagTopNeighborIndex] == EB_TRUE) ? 1 : 0;
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
skipFlag,
&(cabacEncodeCtxPtr->contextModelEncContext.skipFlagContextModel[contextIndex]));
}
/*********************************************************************
* EncodeMergeFlag
* Encodes the merge flag
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* puPtr
* input pointer to the prediction unit
*********************************************************************/
EB_ERRORTYPE EncodeMergeFlag(
CabacEncodeContext_t *cabacEncodeCtxPtr,
PredictionUnit_t *puPtr)
{
EB_ERRORTYPE return_error = EB_ErrorNone;
EB_U32 mergeFlag = (puPtr->mergeFlag) ? 1 : 0;
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
mergeFlag,
&(cabacEncodeCtxPtr->contextModelEncContext.mergeFlagContextModel[0]));
return return_error;
}
/*********************************************************************
* EncodeMergeIndex
* Encodes the merge index
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* puPtr
* input pointer to the prediction unit
*********************************************************************/
EB_ERRORTYPE EncodeMergeIndex(
CabacEncodeContext_t *cabacEncodeCtxPtr,
PredictionUnit_t *puPtr)
{
EB_ERRORTYPE return_error = EB_ErrorNone;
EB_U32 mergeIndex = puPtr->mergeIndex;
switch (mergeIndex){
case 4:
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
1,
&(cabacEncodeCtxPtr->contextModelEncContext.mergeIndexContextModel[0]));
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
1);
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
1);
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
1);
break;
case 3:
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
1,
&(cabacEncodeCtxPtr->contextModelEncContext.mergeIndexContextModel[0]));
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
1);
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
1);
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
0);
break;
case 2:
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
1,
&(cabacEncodeCtxPtr->contextModelEncContext.mergeIndexContextModel[0]));
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
1);
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
0);
break;
case 1:
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
1,
&(cabacEncodeCtxPtr->contextModelEncContext.mergeIndexContextModel[0]));
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
0);
break;
case 0:
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
0,
&(cabacEncodeCtxPtr->contextModelEncContext.mergeIndexContextModel[0]));
break;
default:
break;
}
return return_error;
}
/*********************************************************************
* EncodeMvpIndex
* Encodes the motion vector prediction index
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* puPtr
* input pointer to the prediction unit
*
* refList
* input pointer to the prediction unit
*********************************************************************/
EB_ERRORTYPE EncodeMvpIndex(
CabacEncodeContext_t *cabacEncodeCtxPtr,
PredictionUnit_t *puPtr,
EB_REFLIST refList)
{
EB_ERRORTYPE return_error = EB_ErrorNone;
EB_U32 mvpIndex = refList == REF_LIST_0 ? puPtr->mvd[REF_LIST_0].predIdx : puPtr->mvd[REF_LIST_1].predIdx;
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
mvpIndex,
&(cabacEncodeCtxPtr->contextModelEncContext.mvpIndexContextModel[0]));
return return_error;
}
/*********************************************************************
* EncodePartitionSize
* Encodes the partition size of a PU
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* puPtr
* input pointer to the prediction unit
*********************************************************************/
EB_ERRORTYPE EncodePartitionSize(
CabacEncodeContext_t *cabacEncodeCtxPtr,
CodingUnit_t *cuPtr,
EB_U32 tbMaxDepth)
{
EB_ERRORTYPE return_error = EB_ErrorNone;
if (cuPtr->predictionModeFlag == INTRA_MODE) {
if (GetCodedUnitStats(cuPtr->leafIndex)->depth == (tbMaxDepth - 1)) {
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
1, // SIZE_2Nx2N
&(cabacEncodeCtxPtr->contextModelEncContext.partSizeContextModel[0]));
}
}
// only true for P-mode and 2Nx2N partition
else {
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
1,
&(cabacEncodeCtxPtr->contextModelEncContext.partSizeContextModel[0]));
}
return return_error;
}
EB_ERRORTYPE EncodeIntra4x4PartitionSize(
CabacEncodeContext_t *cabacEncodeCtxPtr,
CodingUnit_t *cuPtr,
EB_U32 tbMaxDepth)
{
EB_ERRORTYPE return_error = EB_ErrorNone;
if (GetCodedUnitStats(cuPtr->leafIndex)->depth == (tbMaxDepth - 1)) {
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
0, // SIZE_NxN
&(cabacEncodeCtxPtr->contextModelEncContext.partSizeContextModel[0]));
}
return return_error;
}
/*********************************************************************
* EncodePredictionMode
* Encodes the prediction mode of a PU
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* puPtr
* input pointer to the prediction unit
*********************************************************************/
EB_ERRORTYPE EncodePredictionMode(
CabacEncodeContext_t *cabacEncodeCtxPtr,
CodingUnit_t *cuPtr)
{
EB_ERRORTYPE return_error = EB_ErrorNone;
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
(cuPtr->predictionModeFlag == INTER_MODE) ? 0 : 1,
&(cabacEncodeCtxPtr->contextModelEncContext.predModeContextModel[0]));
return return_error;
}
/*********************************************************************
* EncodeIntraLumaModeFirstStage
* Encodes the intra luma mode
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* puPtr
* input pointer to the prediction unit
*********************************************************************/
static void EncodeIntraLumaModeFirstStage(
CabacEncodeContext_t *cabacEncodeCtxPtr,
EB_U32 puOriginX,
EB_U32 puOriginY,
EB_U32 lcuSize,
EB_U8 *intraLumaLeftMode,
EB_U8 *intraLumaTopMode,
EB_U32 lumaMode,
NeighborArrayUnit_t *modeTypeNeighborArray,
NeighborArrayUnit_t *intraLumaModeNeighborArray)
{
EB_U32 modeTypeLeftNeighborIndex = GetNeighborArrayUnitLeftIndex(
modeTypeNeighborArray,
puOriginY);
EB_U32 modeTypeTopNeighborIndex = GetNeighborArrayUnitTopIndex(
modeTypeNeighborArray,
puOriginX);
EB_U32 intraLumaModeLeftNeighborIndex = GetNeighborArrayUnitLeftIndex(
intraLumaModeNeighborArray,
puOriginY);
EB_U32 intraLumaModeTopNeighborIndex = GetNeighborArrayUnitTopIndex(
intraLumaModeNeighborArray,
puOriginX);
EB_S32 predictionIndex;
EB_U32 lumaPredictionArray[3];
EB_U32 leftNeighborMode = (EB_U32)(
(modeTypeNeighborArray->leftArray[modeTypeLeftNeighborIndex] != INTRA_MODE) ? (EB_U32)EB_INTRA_DC :
intraLumaModeNeighborArray->leftArray[intraLumaModeLeftNeighborIndex]);
EB_U32 topNeighborMode = (EB_U32)(
(modeTypeNeighborArray->topArray[modeTypeTopNeighborIndex] != INTRA_MODE) ? (EB_U32)EB_INTRA_DC :
((puOriginY & (lcuSize - 1)) == 0) ? (EB_U32)EB_INTRA_DC :
intraLumaModeNeighborArray->topArray[intraLumaModeTopNeighborIndex]);
*intraLumaLeftMode = (EB_U8)leftNeighborMode;
*intraLumaTopMode = (EB_U8)topNeighborMode;
if (leftNeighborMode == topNeighborMode) {
if (leftNeighborMode > 1) { // For angular modes
lumaPredictionArray[0] = leftNeighborMode;
lumaPredictionArray[1] = ((leftNeighborMode + 29) & 0x1F) + 2;
lumaPredictionArray[2] = ((leftNeighborMode - 1) & 0x1F) + 2;
}
else { // Non Angular modes
lumaPredictionArray[0] = EB_INTRA_PLANAR;
lumaPredictionArray[1] = EB_INTRA_DC;
lumaPredictionArray[2] = EB_INTRA_VERTICAL;
}
}
else {
lumaPredictionArray[0] = leftNeighborMode;
lumaPredictionArray[1] = topNeighborMode;
if (leftNeighborMode && topNeighborMode) {
lumaPredictionArray[2] = EB_INTRA_PLANAR; // when both modes are non planar
}
else {
lumaPredictionArray[2] = (leftNeighborMode + topNeighborMode) < 2 ? EB_INTRA_VERTICAL : EB_INTRA_DC;
}
}
predictionIndex = (lumaMode == lumaPredictionArray[0]) ? 0 :
(lumaMode == lumaPredictionArray[1]) ? 1 :
(lumaMode == lumaPredictionArray[2]) ? 2 :
-1; // luma mode is not equal to any of the predictors
if (predictionIndex != -1) {
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
1,
&(cabacEncodeCtxPtr->contextModelEncContext.intraLumaContextModel[0]));
}
else {
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
0,
&(cabacEncodeCtxPtr->contextModelEncContext.intraLumaContextModel[0]));
}
}
/*********************************************************************
* EncodeIntraLumaModeFirstStage
* Encodes the intra luma mode
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* puPtr
* input pointer to the prediction unit
*********************************************************************/
static void EncodeIntraLumaModeSecondStage(
CabacEncodeContext_t *cabacEncodeCtxPtr,
EB_U8 leftNeighborMode,
EB_U8 topNeighborMode,
EB_U32 lumaMode)
{
EB_S32 predictionIndex;
EB_U32 lumaPredictionArray[3];
if (leftNeighborMode == topNeighborMode) {
if (leftNeighborMode > 1) { // For angular modes
lumaPredictionArray[0] = leftNeighborMode;
lumaPredictionArray[1] = ((leftNeighborMode + 29) & 0x1F) + 2;
lumaPredictionArray[2] = ((leftNeighborMode - 1) & 0x1F) + 2;
}
else { // Non Angular modes
lumaPredictionArray[0] = EB_INTRA_PLANAR;
lumaPredictionArray[1] = EB_INTRA_DC;
lumaPredictionArray[2] = EB_INTRA_VERTICAL;
}
}
else {
lumaPredictionArray[0] = leftNeighborMode;
lumaPredictionArray[1] = topNeighborMode;
if (leftNeighborMode && topNeighborMode) {
lumaPredictionArray[2] = EB_INTRA_PLANAR; // when both modes are non planar
}
else {
lumaPredictionArray[2] = (leftNeighborMode + topNeighborMode) < 2 ? EB_INTRA_VERTICAL : EB_INTRA_DC;
}
}
predictionIndex = (lumaMode == lumaPredictionArray[0]) ? 0 :
(lumaMode == lumaPredictionArray[1]) ? 1 :
(lumaMode == lumaPredictionArray[2]) ? 2 :
-1; // luma mode is not equal to any of the predictors
if (predictionIndex != -1) {
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
predictionIndex ? 1 : 0);
if (predictionIndex) {
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
predictionIndex - 1);
}
}
else {
if (lumaPredictionArray[0] > lumaPredictionArray[1]) {
SWAP(lumaPredictionArray[0], lumaPredictionArray[1]);
}
if (lumaPredictionArray[0] > lumaPredictionArray[2]) {
SWAP(lumaPredictionArray[0], lumaPredictionArray[2]);
}
if (lumaPredictionArray[1] > lumaPredictionArray[2]) {
SWAP(lumaPredictionArray[1], lumaPredictionArray[2]);
}
lumaMode =
(lumaMode > lumaPredictionArray[2]) ? lumaMode - 1 :
lumaMode;
lumaMode =
(lumaMode > lumaPredictionArray[1]) ? lumaMode - 1 :
lumaMode;
lumaMode =
(lumaMode > lumaPredictionArray[0]) ? lumaMode - 1 :
lumaMode;
EncodeBypassBins(
&(cabacEncodeCtxPtr->bacEncContext),
lumaMode,
5);
}
}
/*********************************************************************
* EncodeIntraChromaMode
* Encodes the intra chroma mode
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* puPtr
* input pointer to the prediction unit
*********************************************************************/
EB_ERRORTYPE EncodeIntraChromaMode(
CabacEncodeContext_t *cabacEncodeCtxPtr)
{
EB_ERRORTYPE return_error = EB_ErrorNone;
// EB_INTRA_CHROMA_DM
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
0,
&(cabacEncodeCtxPtr->contextModelEncContext.intraChromaContextModel[0]));
return return_error;
}
/*********************************************************************
* ExponentialGolombCode
* Encodes the symbol using Exponential Golomb Code
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* symbol
* input to be coded using exponential golomb code
*
* count
* input count for exponential golomb code
*********************************************************************/
EB_ERRORTYPE ExponentialGolombCode(
CabacEncodeContext_t *cabacEncodeCtxPtr,
EB_U32 symbol,
EB_U32 count)
{
EB_ERRORTYPE return_error = EB_ErrorNone;
EB_U32 bins = 0;
EB_S32 numOfBins = 0;
while (symbol >= (EB_U32)(1 << count))
{
bins = (bins << 1) + 1;
numOfBins++;
symbol -= 1 << count;
count++;
}
bins = (bins << 1);
numOfBins++;
bins = (bins << count) | symbol;
numOfBins += count;
EncodeBypassBins(
&(cabacEncodeCtxPtr->bacEncContext),
bins,
numOfBins);
return return_error;
}
/*********************************************************************
* EncodeMvd
* Encodes the motion vector difference
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* puPtr
* input pointer to the prediction unit
*
* refList
* input pointer to the prediction unit
*********************************************************************/
EB_ERRORTYPE EncodeMvd(
CabacEncodeContext_t *cabacEncodeCtxPtr,
PredictionUnit_t *puPtr,
EB_REFLIST refList)
{
EB_ERRORTYPE return_error = EB_ErrorNone;
const EB_S32 mvdX = refList == REF_LIST_0 ? puPtr->mvd[REF_LIST_0].mvdX : puPtr->mvd[REF_LIST_1].mvdX;
const EB_S32 mvdY = refList == REF_LIST_0 ? puPtr->mvd[REF_LIST_0].mvdY : puPtr->mvd[REF_LIST_1].mvdY;
EB_U32 xSign = (0 > mvdX);
EB_U32 ySign = (0 > mvdY);
EB_U32 absMvdX = ABS(mvdX);
EB_U32 absMvdY = ABS(mvdY);
EB_U32 mvdXneq0 = (mvdX != 0);
EB_U32 mvdYneq0 = (mvdY != 0);
EB_U32 absmvdXgt1 = (absMvdX > 1);
EB_U32 absmvdYgt1 = (absMvdY > 1);
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
mvdXneq0,
&(cabacEncodeCtxPtr->contextModelEncContext.mvdContextModel[0]));
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
mvdYneq0,
&(cabacEncodeCtxPtr->contextModelEncContext.mvdContextModel[0]));
if (mvdXneq0){
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
absmvdXgt1,
&(cabacEncodeCtxPtr->contextModelEncContext.mvdContextModel[1]));
}
if (mvdYneq0) {
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
absmvdYgt1,
&(cabacEncodeCtxPtr->contextModelEncContext.mvdContextModel[1]));
}
switch (mvdXneq0) {
case 1:
switch (absmvdXgt1) {
case 1:
ExponentialGolombCode(
cabacEncodeCtxPtr,
(EB_S32)absMvdX - 2,
1);
case 0:
// Sign of mvdX
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
xSign);
break;
default:
break;
}
case 0:
break;
default:
break;
}
switch (mvdYneq0) {
case 1:
switch (absmvdYgt1){
case 1:
ExponentialGolombCode(
cabacEncodeCtxPtr,
(EB_S32)absMvdY - 2,
1);
case 0:
// Sign of mvdY
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
ySign);
default:
break;
}
case 0:
default:
break;
}
return return_error;
}
/*********************************************************************
* EncodePredictionDirection
* Encodes the inter prediction direction
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* puPtr
* input pointer to the prediction unit
*********************************************************************/
EB_ERRORTYPE EncodePredictionDirection(
CabacEncodeContext_t *cabacEncodeCtxPtr,
PredictionUnit_t *puPtr,
CodingUnit_t *cuPtr)
{
EB_ERRORTYPE return_error = EB_ErrorNone;
EB_U32 predictionDirection = puPtr->interPredDirectionIndex;
{
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
predictionDirection == BI_PRED ? 1 : 0,
&(cabacEncodeCtxPtr->contextModelEncContext.interDirContextModel[GetCodedUnitStats(cuPtr->leafIndex)->depth]));
}
if (predictionDirection != BI_PRED){
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
predictionDirection,
&(cabacEncodeCtxPtr->contextModelEncContext.interDirContextModel[4]));
}
return return_error;
}
/*********************************************************************
* EncodeReferencePictureIndex
* Encodes the reference picture index
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* puPtr
* input pointer to the prediction unit
*
* refList
* input pointer to the prediction unit
*********************************************************************/
EB_ERRORTYPE EncodeReferencePictureIndex(
CabacEncodeContext_t *cabacEncodeCtxPtr,
EB_REFLIST refList,
PictureControlSet_t *pictureControlSetPtr)
{
EB_ERRORTYPE return_error = EB_ErrorNone;
EB_S32 refListsCount = (refList == REF_LIST_0) ?
pictureControlSetPtr->ParentPcsPtr->refList0Count :
pictureControlSetPtr->ParentPcsPtr->refList1Count;
if (refListsCount > 1) {
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
0,
&(cabacEncodeCtxPtr->contextModelEncContext.refPicContextModel[0]));
}
return return_error;
}
/*********************************************************************
* EncodeSaoMerge
* Encodes the SAO Merge
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* mergeLeftFlag
* input sao merge flag
*
* componentType
* Y, Cb, or Cr
*********************************************************************/
EB_ERRORTYPE EncodeSaoMerge(
CabacEncodeContext_t *cabacEncodeCtxPtr,
EB_U32 mergeFlag)
{
EB_ERRORTYPE return_error = EB_ErrorNone;
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
mergeFlag ? 1 : 0,
&(cabacEncodeCtxPtr->contextModelEncContext.saoMergeFlagContextModel[0]));
return return_error;
}
/*********************************************************************
* EncodeSaoType
* Encodes the SAO type
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* saoType
* input sao type
*
*********************************************************************/
EB_ERRORTYPE EncodeSaoType(
CabacEncodeContext_t *cabacEncodeCtxPtr,
EB_U32 saoType)
{
EB_ERRORTYPE return_error = EB_ErrorNone;
if (saoType == 0) {
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
0,
&(cabacEncodeCtxPtr->contextModelEncContext.saoTypeIndexContextModel[0]));
}
else {
EncodeOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
1,
&(cabacEncodeCtxPtr->contextModelEncContext.saoTypeIndexContextModel[0]));
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
(saoType <= 4) ? 1 : 0);
}
return return_error;
}
/*********************************************************************
* EncodeOffsetTrunUnary
* Encodes SAO offset
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* offset
* input offset value
*
* maxValue
* input maximum value of the offsets
*********************************************************************/
EB_ERRORTYPE EncodeOffsetTrunUnary(
CabacEncodeContext_t *cabacEncodeCtxPtr,
EB_U32 offset,
EB_U32 maxValue)
{
EB_ERRORTYPE return_error = EB_ErrorNone;
EB_U32 index;
EB_BOOL codeLastBin = (maxValue > offset) ? EB_TRUE : EB_FALSE;
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
(offset == 0) ? 0 : 1);
if (offset != 0) {
for (index = 0; index < (offset - 1); index++) {
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
1);
}
if (codeLastBin) {
EncodeBypassOneBin(
&(cabacEncodeCtxPtr->bacEncContext),
0);
}
}
return return_error;
}
/*********************************************************************
* EncodeSaoOffsets
* Encodes SAO offsets
*
* cabacEncContextPtr
* pointer to the CABAC structure passed as input
*
* *offset
* input pointer to offset values
*
* bandPosition
* input position of the band