// Copyright 2015 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "core/fxcodec/jbig2/JBig2_GrdProc.h"
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#include <memory>
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#include "core/fxcodec/include/fx_codec.h"
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#include "core/fxcodec/jbig2/JBig2_ArithDecoder.h"
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#include "core/fxcodec/jbig2/JBig2_BitStream.h"
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#include "core/fxcodec/jbig2/JBig2_Image.h"
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CJBig2_GRDProc::CJBig2_GRDProc()
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: m_loopIndex(0),
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m_pLine(nullptr),
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m_pPause(nullptr),
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m_DecodeType(0),
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m_LTP(FALSE) {
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m_ReplaceRect.left = 0;
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m_ReplaceRect.bottom = 0;
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m_ReplaceRect.top = 0;
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m_ReplaceRect.right = 0;
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}
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bool CJBig2_GRDProc::UseTemplate0Opt3() const {
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return (GBAT[0] == 3) && (GBAT[1] == -1) && (GBAT[2] == -3) &&
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(GBAT[3] == -1) && (GBAT[4] == 2) && (GBAT[5] == -2) &&
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(GBAT[6] == -2) && (GBAT[7] == -2);
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}
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bool CJBig2_GRDProc::UseTemplate1Opt3() const {
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return (GBAT[0] == 3) && (GBAT[1] == -1);
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}
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bool CJBig2_GRDProc::UseTemplate23Opt3() const {
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return (GBAT[0] == 2) && (GBAT[1] == -1);
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}
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CJBig2_Image* CJBig2_GRDProc::decode_Arith(CJBig2_ArithDecoder* pArithDecoder,
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JBig2ArithCtx* gbContext) {
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if (GBW == 0 || GBH == 0)
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return new CJBig2_Image(GBW, GBH);
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if (GBTEMPLATE == 0) {
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if (UseTemplate0Opt3())
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return decode_Arith_Template0_opt3(pArithDecoder, gbContext);
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return decode_Arith_Template0_unopt(pArithDecoder, gbContext);
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} else if (GBTEMPLATE == 1) {
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if (UseTemplate1Opt3())
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return decode_Arith_Template1_opt3(pArithDecoder, gbContext);
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return decode_Arith_Template1_unopt(pArithDecoder, gbContext);
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} else if (GBTEMPLATE == 2) {
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if (UseTemplate23Opt3())
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return decode_Arith_Template2_opt3(pArithDecoder, gbContext);
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return decode_Arith_Template2_unopt(pArithDecoder, gbContext);
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} else {
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if (UseTemplate23Opt3())
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return decode_Arith_Template3_opt3(pArithDecoder, gbContext);
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return decode_Arith_Template3_unopt(pArithDecoder, gbContext);
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}
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}
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CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template0_opt3(
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CJBig2_ArithDecoder* pArithDecoder,
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JBig2ArithCtx* gbContext) {
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std::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH));
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if (!GBREG->m_pData)
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return nullptr;
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FX_BOOL LTP = FALSE;
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uint8_t* pLine = GBREG->m_pData;
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int32_t nStride = GBREG->m_nStride;
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int32_t nStride2 = nStride << 1;
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int32_t nLineBytes = ((GBW + 7) >> 3) - 1;
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int32_t nBitsLeft = GBW - (nLineBytes << 3);
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uint32_t height = GBH & 0x7fffffff;
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for (uint32_t h = 0; h < height; h++) {
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if (TPGDON)
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LTP = LTP ^ pArithDecoder->DECODE(&gbContext[0x9b25]);
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if (LTP) {
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GBREG->copyLine(h, h - 1);
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} else {
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if (h > 1) {
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uint8_t* pLine1 = pLine - nStride2;
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uint8_t* pLine2 = pLine - nStride;
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uint32_t line1 = (*pLine1++) << 6;
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uint32_t line2 = *pLine2++;
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uint32_t CONTEXT = ((line1 & 0xf800) | (line2 & 0x07f0));
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for (int32_t cc = 0; cc < nLineBytes; cc++) {
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line1 = (line1 << 8) | ((*pLine1++) << 6);
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line2 = (line2 << 8) | (*pLine2++);
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uint8_t cVal = 0;
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for (int32_t k = 7; k >= 0; k--) {
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FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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cVal |= bVal << k;
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CONTEXT = (((CONTEXT & 0x7bf7) << 1) | bVal |
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((line1 >> k) & 0x0800) | ((line2 >> k) & 0x0010));
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}
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pLine[cc] = cVal;
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}
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line1 <<= 8;
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line2 <<= 8;
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uint8_t cVal1 = 0;
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for (int32_t k = 0; k < nBitsLeft; k++) {
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FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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cVal1 |= bVal << (7 - k);
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CONTEXT =
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(((CONTEXT & 0x7bf7) << 1) | bVal |
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((line1 >> (7 - k)) & 0x0800) | ((line2 >> (7 - k)) & 0x0010));
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}
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pLine[nLineBytes] = cVal1;
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} else {
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uint8_t* pLine2 = pLine - nStride;
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uint32_t line2 = (h & 1) ? (*pLine2++) : 0;
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uint32_t CONTEXT = (line2 & 0x07f0);
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for (int32_t cc = 0; cc < nLineBytes; cc++) {
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if (h & 1) {
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line2 = (line2 << 8) | (*pLine2++);
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}
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uint8_t cVal = 0;
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for (int32_t k = 7; k >= 0; k--) {
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FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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cVal |= bVal << k;
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CONTEXT =
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(((CONTEXT & 0x7bf7) << 1) | bVal | ((line2 >> k) & 0x0010));
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}
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pLine[cc] = cVal;
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}
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line2 <<= 8;
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uint8_t cVal1 = 0;
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for (int32_t k = 0; k < nBitsLeft; k++) {
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FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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cVal1 |= bVal << (7 - k);
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CONTEXT = (((CONTEXT & 0x7bf7) << 1) | bVal |
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(((line2 >> (7 - k))) & 0x0010));
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}
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pLine[nLineBytes] = cVal1;
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}
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}
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pLine += nStride;
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}
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return GBREG.release();
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}
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CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template0_unopt(
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CJBig2_ArithDecoder* pArithDecoder,
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JBig2ArithCtx* gbContext) {
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FX_BOOL LTP = FALSE;
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std::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH));
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GBREG->fill(0);
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for (uint32_t h = 0; h < GBH; h++) {
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if (TPGDON)
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LTP = LTP ^ pArithDecoder->DECODE(&gbContext[0x9b25]);
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if (LTP) {
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GBREG->copyLine(h, h - 1);
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} else {
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uint32_t line1 = GBREG->getPixel(1, h - 2);
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line1 |= GBREG->getPixel(0, h - 2) << 1;
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uint32_t line2 = GBREG->getPixel(2, h - 1);
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line2 |= GBREG->getPixel(1, h - 1) << 1;
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line2 |= GBREG->getPixel(0, h - 1) << 2;
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uint32_t line3 = 0;
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for (uint32_t w = 0; w < GBW; w++) {
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FX_BOOL bVal;
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if (USESKIP && SKIP->getPixel(w, h)) {
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bVal = 0;
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} else {
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uint32_t CONTEXT = line3;
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CONTEXT |= GBREG->getPixel(w + GBAT[0], h + GBAT[1]) << 4;
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CONTEXT |= line2 << 5;
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CONTEXT |= GBREG->getPixel(w + GBAT[2], h + GBAT[3]) << 10;
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CONTEXT |= GBREG->getPixel(w + GBAT[4], h + GBAT[5]) << 11;
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CONTEXT |= line1 << 12;
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CONTEXT |= GBREG->getPixel(w + GBAT[6], h + GBAT[7]) << 15;
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bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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}
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if (bVal) {
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GBREG->setPixel(w, h, bVal);
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}
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line1 = ((line1 << 1) | GBREG->getPixel(w + 2, h - 2)) & 0x07;
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line2 = ((line2 << 1) | GBREG->getPixel(w + 3, h - 1)) & 0x1f;
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line3 = ((line3 << 1) | bVal) & 0x0f;
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}
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}
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}
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return GBREG.release();
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}
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CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template1_opt3(
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CJBig2_ArithDecoder* pArithDecoder,
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JBig2ArithCtx* gbContext) {
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std::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH));
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if (!GBREG->m_pData)
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return nullptr;
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FX_BOOL LTP = FALSE;
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uint8_t* pLine = GBREG->m_pData;
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int32_t nStride = GBREG->m_nStride;
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int32_t nStride2 = nStride << 1;
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int32_t nLineBytes = ((GBW + 7) >> 3) - 1;
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int32_t nBitsLeft = GBW - (nLineBytes << 3);
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for (uint32_t h = 0; h < GBH; h++) {
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if (TPGDON)
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LTP = LTP ^ pArithDecoder->DECODE(&gbContext[0x0795]);
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if (LTP) {
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GBREG->copyLine(h, h - 1);
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} else {
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if (h > 1) {
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uint8_t* pLine1 = pLine - nStride2;
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uint8_t* pLine2 = pLine - nStride;
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uint32_t line1 = (*pLine1++) << 4;
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uint32_t line2 = *pLine2++;
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uint32_t CONTEXT = (line1 & 0x1e00) | ((line2 >> 1) & 0x01f8);
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for (int32_t cc = 0; cc < nLineBytes; cc++) {
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line1 = (line1 << 8) | ((*pLine1++) << 4);
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line2 = (line2 << 8) | (*pLine2++);
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uint8_t cVal = 0;
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for (int32_t k = 7; k >= 0; k--) {
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FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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cVal |= bVal << k;
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CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal |
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((line1 >> k) & 0x0200) | ((line2 >> (k + 1)) & 0x0008);
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}
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pLine[cc] = cVal;
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}
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line1 <<= 8;
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line2 <<= 8;
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uint8_t cVal1 = 0;
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for (int32_t k = 0; k < nBitsLeft; k++) {
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FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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cVal1 |= bVal << (7 - k);
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CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal |
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((line1 >> (7 - k)) & 0x0200) |
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((line2 >> (8 - k)) & 0x0008);
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}
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pLine[nLineBytes] = cVal1;
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} else {
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uint8_t* pLine2 = pLine - nStride;
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uint32_t line2 = (h & 1) ? (*pLine2++) : 0;
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uint32_t CONTEXT = (line2 >> 1) & 0x01f8;
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for (int32_t cc = 0; cc < nLineBytes; cc++) {
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if (h & 1) {
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line2 = (line2 << 8) | (*pLine2++);
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}
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uint8_t cVal = 0;
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for (int32_t k = 7; k >= 0; k--) {
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FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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cVal |= bVal << k;
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CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal |
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((line2 >> (k + 1)) & 0x0008);
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}
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pLine[cc] = cVal;
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}
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line2 <<= 8;
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uint8_t cVal1 = 0;
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for (int32_t k = 0; k < nBitsLeft; k++) {
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FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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cVal1 |= bVal << (7 - k);
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CONTEXT =
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((CONTEXT & 0x0efb) << 1) | bVal | ((line2 >> (8 - k)) & 0x0008);
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}
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pLine[nLineBytes] = cVal1;
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}
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}
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pLine += nStride;
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}
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return GBREG.release();
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}
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CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template1_unopt(
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CJBig2_ArithDecoder* pArithDecoder,
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JBig2ArithCtx* gbContext) {
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FX_BOOL LTP = FALSE;
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std::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH));
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GBREG->fill(0);
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for (uint32_t h = 0; h < GBH; h++) {
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if (TPGDON)
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LTP = LTP ^ pArithDecoder->DECODE(&gbContext[0x0795]);
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if (LTP) {
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GBREG->copyLine(h, h - 1);
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} else {
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uint32_t line1 = GBREG->getPixel(2, h - 2);
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line1 |= GBREG->getPixel(1, h - 2) << 1;
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line1 |= GBREG->getPixel(0, h - 2) << 2;
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uint32_t line2 = GBREG->getPixel(2, h - 1);
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line2 |= GBREG->getPixel(1, h - 1) << 1;
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line2 |= GBREG->getPixel(0, h - 1) << 2;
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uint32_t line3 = 0;
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for (uint32_t w = 0; w < GBW; w++) {
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FX_BOOL bVal;
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if (USESKIP && SKIP->getPixel(w, h)) {
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bVal = 0;
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} else {
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uint32_t CONTEXT = line3;
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CONTEXT |= GBREG->getPixel(w + GBAT[0], h + GBAT[1]) << 3;
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CONTEXT |= line2 << 4;
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CONTEXT |= line1 << 9;
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bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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}
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if (bVal) {
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GBREG->setPixel(w, h, bVal);
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}
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line1 = ((line1 << 1) | GBREG->getPixel(w + 3, h - 2)) & 0x0f;
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line2 = ((line2 << 1) | GBREG->getPixel(w + 3, h - 1)) & 0x1f;
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line3 = ((line3 << 1) | bVal) & 0x07;
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}
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}
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}
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return GBREG.release();
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}
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CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template2_opt3(
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CJBig2_ArithDecoder* pArithDecoder,
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JBig2ArithCtx* gbContext) {
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std::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH));
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if (!GBREG->m_pData)
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return nullptr;
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FX_BOOL LTP = FALSE;
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uint8_t* pLine = GBREG->m_pData;
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int32_t nStride = GBREG->m_nStride;
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int32_t nStride2 = nStride << 1;
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int32_t nLineBytes = ((GBW + 7) >> 3) - 1;
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int32_t nBitsLeft = GBW - (nLineBytes << 3);
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for (uint32_t h = 0; h < GBH; h++) {
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if (TPGDON)
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LTP = LTP ^ pArithDecoder->DECODE(&gbContext[0x00e5]);
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if (LTP) {
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GBREG->copyLine(h, h - 1);
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} else {
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if (h > 1) {
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uint8_t* pLine1 = pLine - nStride2;
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uint8_t* pLine2 = pLine - nStride;
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uint32_t line1 = (*pLine1++) << 1;
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uint32_t line2 = *pLine2++;
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uint32_t CONTEXT = (line1 & 0x0380) | ((line2 >> 3) & 0x007c);
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for (int32_t cc = 0; cc < nLineBytes; cc++) {
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line1 = (line1 << 8) | ((*pLine1++) << 1);
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line2 = (line2 << 8) | (*pLine2++);
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uint8_t cVal = 0;
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for (int32_t k = 7; k >= 0; k--) {
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FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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cVal |= bVal << k;
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CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal |
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((line1 >> k) & 0x0080) | ((line2 >> (k + 3)) & 0x0004);
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}
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pLine[cc] = cVal;
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}
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line1 <<= 8;
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line2 <<= 8;
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uint8_t cVal1 = 0;
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for (int32_t k = 0; k < nBitsLeft; k++) {
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FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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cVal1 |= bVal << (7 - k);
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CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal |
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((line1 >> (7 - k)) & 0x0080) |
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((line2 >> (10 - k)) & 0x0004);
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}
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pLine[nLineBytes] = cVal1;
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} else {
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uint8_t* pLine2 = pLine - nStride;
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uint32_t line2 = (h & 1) ? (*pLine2++) : 0;
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uint32_t CONTEXT = (line2 >> 3) & 0x007c;
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for (int32_t cc = 0; cc < nLineBytes; cc++) {
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if (h & 1) {
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line2 = (line2 << 8) | (*pLine2++);
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}
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uint8_t cVal = 0;
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for (int32_t k = 7; k >= 0; k--) {
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FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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cVal |= bVal << k;
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CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal |
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((line2 >> (k + 3)) & 0x0004);
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}
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pLine[cc] = cVal;
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}
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line2 <<= 8;
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uint8_t cVal1 = 0;
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for (int32_t k = 0; k < nBitsLeft; k++) {
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FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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cVal1 |= bVal << (7 - k);
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CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal |
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(((line2 >> (10 - k))) & 0x0004);
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}
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pLine[nLineBytes] = cVal1;
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}
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}
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pLine += nStride;
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}
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return GBREG.release();
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}
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CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template2_unopt(
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CJBig2_ArithDecoder* pArithDecoder,
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JBig2ArithCtx* gbContext) {
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FX_BOOL LTP = FALSE;
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std::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH));
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GBREG->fill(0);
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for (uint32_t h = 0; h < GBH; h++) {
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if (TPGDON)
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LTP = LTP ^ pArithDecoder->DECODE(&gbContext[0x00e5]);
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if (LTP) {
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GBREG->copyLine(h, h - 1);
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} else {
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uint32_t line1 = GBREG->getPixel(1, h - 2);
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line1 |= GBREG->getPixel(0, h - 2) << 1;
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uint32_t line2 = GBREG->getPixel(1, h - 1);
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line2 |= GBREG->getPixel(0, h - 1) << 1;
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uint32_t line3 = 0;
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for (uint32_t w = 0; w < GBW; w++) {
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FX_BOOL bVal;
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if (USESKIP && SKIP->getPixel(w, h)) {
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bVal = 0;
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} else {
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uint32_t CONTEXT = line3;
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CONTEXT |= GBREG->getPixel(w + GBAT[0], h + GBAT[1]) << 2;
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CONTEXT |= line2 << 3;
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CONTEXT |= line1 << 7;
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bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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}
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if (bVal) {
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GBREG->setPixel(w, h, bVal);
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}
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line1 = ((line1 << 1) | GBREG->getPixel(w + 2, h - 2)) & 0x07;
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line2 = ((line2 << 1) | GBREG->getPixel(w + 2, h - 1)) & 0x0f;
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line3 = ((line3 << 1) | bVal) & 0x03;
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}
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}
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}
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return GBREG.release();
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}
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CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template3_opt3(
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CJBig2_ArithDecoder* pArithDecoder,
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JBig2ArithCtx* gbContext) {
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std::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH));
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if (!GBREG->m_pData)
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return nullptr;
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FX_BOOL LTP = FALSE;
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uint8_t* pLine = GBREG->m_pData;
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int32_t nStride = GBREG->m_nStride;
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int32_t nLineBytes = ((GBW + 7) >> 3) - 1;
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int32_t nBitsLeft = GBW - (nLineBytes << 3);
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for (uint32_t h = 0; h < GBH; h++) {
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if (TPGDON)
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LTP = LTP ^ pArithDecoder->DECODE(&gbContext[0x0195]);
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if (LTP) {
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GBREG->copyLine(h, h - 1);
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} else {
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if (h > 0) {
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uint8_t* pLine1 = pLine - nStride;
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uint32_t line1 = *pLine1++;
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uint32_t CONTEXT = (line1 >> 1) & 0x03f0;
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for (int32_t cc = 0; cc < nLineBytes; cc++) {
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line1 = (line1 << 8) | (*pLine1++);
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uint8_t cVal = 0;
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for (int32_t k = 7; k >= 0; k--) {
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FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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cVal |= bVal << k;
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CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal |
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((line1 >> (k + 1)) & 0x0010);
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}
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pLine[cc] = cVal;
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}
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line1 <<= 8;
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uint8_t cVal1 = 0;
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for (int32_t k = 0; k < nBitsLeft; k++) {
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FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
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cVal1 |= bVal << (7 - k);
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CONTEXT =
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((CONTEXT & 0x01f7) << 1) | bVal | ((line1 >> (8 - k)) & 0x0010);
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}
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pLine[nLineBytes] = cVal1;
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} else {
|
uint32_t CONTEXT = 0;
|
for (int32_t cc = 0; cc < nLineBytes; cc++) {
|
uint8_t cVal = 0;
|
for (int32_t k = 7; k >= 0; k--) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal |= bVal << k;
|
CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal;
|
}
|
pLine[cc] = cVal;
|
}
|
uint8_t cVal1 = 0;
|
for (int32_t k = 0; k < nBitsLeft; k++) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal1 |= bVal << (7 - k);
|
CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal;
|
}
|
pLine[nLineBytes] = cVal1;
|
}
|
}
|
pLine += nStride;
|
}
|
return GBREG.release();
|
}
|
|
CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template3_unopt(
|
CJBig2_ArithDecoder* pArithDecoder,
|
JBig2ArithCtx* gbContext) {
|
FX_BOOL LTP = FALSE;
|
std::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH));
|
GBREG->fill(0);
|
for (uint32_t h = 0; h < GBH; h++) {
|
if (TPGDON)
|
LTP = LTP ^ pArithDecoder->DECODE(&gbContext[0x0195]);
|
if (LTP == 1) {
|
GBREG->copyLine(h, h - 1);
|
} else {
|
uint32_t line1 = GBREG->getPixel(1, h - 1);
|
line1 |= GBREG->getPixel(0, h - 1) << 1;
|
uint32_t line2 = 0;
|
for (uint32_t w = 0; w < GBW; w++) {
|
FX_BOOL bVal;
|
if (USESKIP && SKIP->getPixel(w, h)) {
|
bVal = 0;
|
} else {
|
uint32_t CONTEXT = line2;
|
CONTEXT |= GBREG->getPixel(w + GBAT[0], h + GBAT[1]) << 4;
|
CONTEXT |= line1 << 5;
|
bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
}
|
if (bVal) {
|
GBREG->setPixel(w, h, bVal);
|
}
|
line1 = ((line1 << 1) | GBREG->getPixel(w + 2, h - 1)) & 0x1f;
|
line2 = ((line2 << 1) | bVal) & 0x0f;
|
}
|
}
|
}
|
return GBREG.release();
|
}
|
|
FXCODEC_STATUS CJBig2_GRDProc::Start_decode_Arith(
|
CJBig2_Image** pImage,
|
CJBig2_ArithDecoder* pArithDecoder,
|
JBig2ArithCtx* gbContext,
|
IFX_Pause* pPause) {
|
if (GBW == 0 || GBH == 0) {
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH;
|
return FXCODEC_STATUS_DECODE_FINISH;
|
}
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_READY;
|
m_pPause = pPause;
|
if (!*pImage)
|
*pImage = new CJBig2_Image(GBW, GBH);
|
if (!(*pImage)->m_pData) {
|
delete *pImage;
|
*pImage = nullptr;
|
m_ProssiveStatus = FXCODEC_STATUS_ERROR;
|
return FXCODEC_STATUS_ERROR;
|
}
|
m_DecodeType = 1;
|
m_pImage = pImage;
|
(*m_pImage)->fill(0);
|
m_pArithDecoder = pArithDecoder;
|
m_gbContext = gbContext;
|
m_LTP = FALSE;
|
m_pLine = nullptr;
|
m_loopIndex = 0;
|
return decode_Arith(pPause);
|
}
|
|
FXCODEC_STATUS CJBig2_GRDProc::decode_Arith(IFX_Pause* pPause) {
|
int iline = m_loopIndex;
|
CJBig2_Image* pImage = *m_pImage;
|
if (GBTEMPLATE == 0) {
|
if (UseTemplate0Opt3()) {
|
m_ProssiveStatus = decode_Arith_Template0_opt3(pImage, m_pArithDecoder,
|
m_gbContext, pPause);
|
} else {
|
m_ProssiveStatus = decode_Arith_Template0_unopt(pImage, m_pArithDecoder,
|
m_gbContext, pPause);
|
}
|
} else if (GBTEMPLATE == 1) {
|
if (UseTemplate1Opt3()) {
|
m_ProssiveStatus = decode_Arith_Template1_opt3(pImage, m_pArithDecoder,
|
m_gbContext, pPause);
|
} else {
|
m_ProssiveStatus = decode_Arith_Template1_unopt(pImage, m_pArithDecoder,
|
m_gbContext, pPause);
|
}
|
} else if (GBTEMPLATE == 2) {
|
if (UseTemplate23Opt3()) {
|
m_ProssiveStatus = decode_Arith_Template2_opt3(pImage, m_pArithDecoder,
|
m_gbContext, pPause);
|
} else {
|
m_ProssiveStatus = decode_Arith_Template2_unopt(pImage, m_pArithDecoder,
|
m_gbContext, pPause);
|
}
|
} else {
|
if (UseTemplate23Opt3()) {
|
m_ProssiveStatus = decode_Arith_Template3_opt3(pImage, m_pArithDecoder,
|
m_gbContext, pPause);
|
} else {
|
m_ProssiveStatus = decode_Arith_Template3_unopt(pImage, m_pArithDecoder,
|
m_gbContext, pPause);
|
}
|
}
|
m_ReplaceRect.left = 0;
|
m_ReplaceRect.right = pImage->m_nWidth;
|
m_ReplaceRect.top = iline;
|
m_ReplaceRect.bottom = m_loopIndex;
|
if (m_ProssiveStatus == FXCODEC_STATUS_DECODE_FINISH) {
|
m_loopIndex = 0;
|
}
|
return m_ProssiveStatus;
|
}
|
|
FXCODEC_STATUS CJBig2_GRDProc::Start_decode_MMR(CJBig2_Image** pImage,
|
CJBig2_BitStream* pStream,
|
IFX_Pause* pPause) {
|
int bitpos, i;
|
*pImage = new CJBig2_Image(GBW, GBH);
|
if (!(*pImage)->m_pData) {
|
delete (*pImage);
|
(*pImage) = nullptr;
|
m_ProssiveStatus = FXCODEC_STATUS_ERROR;
|
return m_ProssiveStatus;
|
}
|
bitpos = (int)pStream->getBitPos();
|
FaxG4Decode(pStream->getBuf(), pStream->getLength(), &bitpos,
|
(*pImage)->m_pData, GBW, GBH, (*pImage)->m_nStride);
|
pStream->setBitPos(bitpos);
|
for (i = 0; (uint32_t)i < (*pImage)->m_nStride * GBH; i++) {
|
(*pImage)->m_pData[i] = ~(*pImage)->m_pData[i];
|
}
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH;
|
return m_ProssiveStatus;
|
}
|
|
FXCODEC_STATUS CJBig2_GRDProc::Continue_decode(IFX_Pause* pPause) {
|
if (m_ProssiveStatus != FXCODEC_STATUS_DECODE_TOBECONTINUE)
|
return m_ProssiveStatus;
|
|
if (m_DecodeType != 1) {
|
m_ProssiveStatus = FXCODEC_STATUS_ERROR;
|
return m_ProssiveStatus;
|
}
|
|
return decode_Arith(pPause);
|
}
|
|
FXCODEC_STATUS CJBig2_GRDProc::decode_Arith_Template0_opt3(
|
CJBig2_Image* pImage,
|
CJBig2_ArithDecoder* pArithDecoder,
|
JBig2ArithCtx* gbContext,
|
IFX_Pause* pPause) {
|
if (!m_pLine) {
|
m_pLine = pImage->m_pData;
|
}
|
int32_t nStride = pImage->m_nStride;
|
int32_t nStride2 = nStride << 1;
|
int32_t nLineBytes = ((GBW + 7) >> 3) - 1;
|
int32_t nBitsLeft = GBW - (nLineBytes << 3);
|
uint32_t height = GBH & 0x7fffffff;
|
for (; m_loopIndex < height; m_loopIndex++) {
|
if (TPGDON)
|
m_LTP = m_LTP ^ pArithDecoder->DECODE(&gbContext[0x9b25]);
|
if (m_LTP) {
|
pImage->copyLine(m_loopIndex, m_loopIndex - 1);
|
} else {
|
if (m_loopIndex > 1) {
|
uint8_t* pLine1 = m_pLine - nStride2;
|
uint8_t* pLine2 = m_pLine - nStride;
|
uint32_t line1 = (*pLine1++) << 6;
|
uint32_t line2 = *pLine2++;
|
uint32_t CONTEXT = ((line1 & 0xf800) | (line2 & 0x07f0));
|
for (int32_t cc = 0; cc < nLineBytes; cc++) {
|
line1 = (line1 << 8) | ((*pLine1++) << 6);
|
line2 = (line2 << 8) | (*pLine2++);
|
uint8_t cVal = 0;
|
for (int32_t k = 7; k >= 0; k--) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal |= bVal << k;
|
CONTEXT = (((CONTEXT & 0x7bf7) << 1) | bVal |
|
((line1 >> k) & 0x0800) | ((line2 >> k) & 0x0010));
|
}
|
m_pLine[cc] = cVal;
|
}
|
line1 <<= 8;
|
line2 <<= 8;
|
uint8_t cVal1 = 0;
|
for (int32_t k = 0; k < nBitsLeft; k++) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal1 |= bVal << (7 - k);
|
CONTEXT =
|
(((CONTEXT & 0x7bf7) << 1) | bVal |
|
((line1 >> (7 - k)) & 0x0800) | ((line2 >> (7 - k)) & 0x0010));
|
}
|
m_pLine[nLineBytes] = cVal1;
|
} else {
|
uint8_t* pLine2 = m_pLine - nStride;
|
uint32_t line2 = (m_loopIndex & 1) ? (*pLine2++) : 0;
|
uint32_t CONTEXT = (line2 & 0x07f0);
|
for (int32_t cc = 0; cc < nLineBytes; cc++) {
|
if (m_loopIndex & 1) {
|
line2 = (line2 << 8) | (*pLine2++);
|
}
|
uint8_t cVal = 0;
|
for (int32_t k = 7; k >= 0; k--) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal |= bVal << k;
|
CONTEXT =
|
(((CONTEXT & 0x7bf7) << 1) | bVal | ((line2 >> k) & 0x0010));
|
}
|
m_pLine[cc] = cVal;
|
}
|
line2 <<= 8;
|
uint8_t cVal1 = 0;
|
for (int32_t k = 0; k < nBitsLeft; k++) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal1 |= bVal << (7 - k);
|
CONTEXT = (((CONTEXT & 0x7bf7) << 1) | bVal |
|
((line2 >> (7 - k)) & 0x0010));
|
}
|
m_pLine[nLineBytes] = cVal1;
|
}
|
}
|
m_pLine += nStride;
|
if (pPause && pPause->NeedToPauseNow()) {
|
m_loopIndex++;
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE;
|
return FXCODEC_STATUS_DECODE_TOBECONTINUE;
|
}
|
}
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH;
|
return FXCODEC_STATUS_DECODE_FINISH;
|
}
|
|
FXCODEC_STATUS CJBig2_GRDProc::decode_Arith_Template0_unopt(
|
CJBig2_Image* pImage,
|
CJBig2_ArithDecoder* pArithDecoder,
|
JBig2ArithCtx* gbContext,
|
IFX_Pause* pPause) {
|
for (; m_loopIndex < GBH; m_loopIndex++) {
|
if (TPGDON)
|
m_LTP = m_LTP ^ pArithDecoder->DECODE(&gbContext[0x9b25]);
|
if (m_LTP) {
|
pImage->copyLine(m_loopIndex, m_loopIndex - 1);
|
} else {
|
uint32_t line1 = pImage->getPixel(1, m_loopIndex - 2);
|
line1 |= pImage->getPixel(0, m_loopIndex - 2) << 1;
|
uint32_t line2 = pImage->getPixel(2, m_loopIndex - 1);
|
line2 |= pImage->getPixel(1, m_loopIndex - 1) << 1;
|
line2 |= pImage->getPixel(0, m_loopIndex - 1) << 2;
|
uint32_t line3 = 0;
|
for (uint32_t w = 0; w < GBW; w++) {
|
FX_BOOL bVal;
|
if (USESKIP && SKIP->getPixel(w, m_loopIndex)) {
|
bVal = 0;
|
} else {
|
uint32_t CONTEXT = line3;
|
CONTEXT |= pImage->getPixel(w + GBAT[0], m_loopIndex + GBAT[1]) << 4;
|
CONTEXT |= line2 << 5;
|
CONTEXT |= pImage->getPixel(w + GBAT[2], m_loopIndex + GBAT[3]) << 10;
|
CONTEXT |= pImage->getPixel(w + GBAT[4], m_loopIndex + GBAT[5]) << 11;
|
CONTEXT |= line1 << 12;
|
CONTEXT |= pImage->getPixel(w + GBAT[6], m_loopIndex + GBAT[7]) << 15;
|
bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
}
|
if (bVal) {
|
pImage->setPixel(w, m_loopIndex, bVal);
|
}
|
line1 =
|
((line1 << 1) | pImage->getPixel(w + 2, m_loopIndex - 2)) & 0x07;
|
line2 =
|
((line2 << 1) | pImage->getPixel(w + 3, m_loopIndex - 1)) & 0x1f;
|
line3 = ((line3 << 1) | bVal) & 0x0f;
|
}
|
}
|
if (pPause && pPause->NeedToPauseNow()) {
|
m_loopIndex++;
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE;
|
return FXCODEC_STATUS_DECODE_TOBECONTINUE;
|
}
|
}
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH;
|
return FXCODEC_STATUS_DECODE_FINISH;
|
}
|
|
FXCODEC_STATUS CJBig2_GRDProc::decode_Arith_Template1_opt3(
|
CJBig2_Image* pImage,
|
CJBig2_ArithDecoder* pArithDecoder,
|
JBig2ArithCtx* gbContext,
|
IFX_Pause* pPause) {
|
if (!m_pLine) {
|
m_pLine = pImage->m_pData;
|
}
|
int32_t nStride = pImage->m_nStride;
|
int32_t nStride2 = nStride << 1;
|
int32_t nLineBytes = ((GBW + 7) >> 3) - 1;
|
int32_t nBitsLeft = GBW - (nLineBytes << 3);
|
for (; m_loopIndex < GBH; m_loopIndex++) {
|
if (TPGDON)
|
m_LTP = m_LTP ^ pArithDecoder->DECODE(&gbContext[0x0795]);
|
if (m_LTP) {
|
pImage->copyLine(m_loopIndex, m_loopIndex - 1);
|
} else {
|
if (m_loopIndex > 1) {
|
uint8_t* pLine1 = m_pLine - nStride2;
|
uint8_t* pLine2 = m_pLine - nStride;
|
uint32_t line1 = (*pLine1++) << 4;
|
uint32_t line2 = *pLine2++;
|
uint32_t CONTEXT = (line1 & 0x1e00) | ((line2 >> 1) & 0x01f8);
|
for (int32_t cc = 0; cc < nLineBytes; cc++) {
|
line1 = (line1 << 8) | ((*pLine1++) << 4);
|
line2 = (line2 << 8) | (*pLine2++);
|
uint8_t cVal = 0;
|
for (int32_t k = 7; k >= 0; k--) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal |= bVal << k;
|
CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal |
|
((line1 >> k) & 0x0200) | ((line2 >> (k + 1)) & 0x0008);
|
}
|
m_pLine[cc] = cVal;
|
}
|
line1 <<= 8;
|
line2 <<= 8;
|
uint8_t cVal1 = 0;
|
for (int32_t k = 0; k < nBitsLeft; k++) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal1 |= bVal << (7 - k);
|
CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal |
|
((line1 >> (7 - k)) & 0x0200) |
|
((line2 >> (8 - k)) & 0x0008);
|
}
|
m_pLine[nLineBytes] = cVal1;
|
} else {
|
uint8_t* pLine2 = m_pLine - nStride;
|
uint32_t line2 = (m_loopIndex & 1) ? (*pLine2++) : 0;
|
uint32_t CONTEXT = (line2 >> 1) & 0x01f8;
|
for (int32_t cc = 0; cc < nLineBytes; cc++) {
|
if (m_loopIndex & 1) {
|
line2 = (line2 << 8) | (*pLine2++);
|
}
|
uint8_t cVal = 0;
|
for (int32_t k = 7; k >= 0; k--) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal |= bVal << k;
|
CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal |
|
((line2 >> (k + 1)) & 0x0008);
|
}
|
m_pLine[cc] = cVal;
|
}
|
line2 <<= 8;
|
uint8_t cVal1 = 0;
|
for (int32_t k = 0; k < nBitsLeft; k++) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal1 |= bVal << (7 - k);
|
CONTEXT =
|
((CONTEXT & 0x0efb) << 1) | bVal | ((line2 >> (8 - k)) & 0x0008);
|
}
|
m_pLine[nLineBytes] = cVal1;
|
}
|
}
|
m_pLine += nStride;
|
if (pPause && pPause->NeedToPauseNow()) {
|
m_loopIndex++;
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE;
|
return FXCODEC_STATUS_DECODE_TOBECONTINUE;
|
}
|
}
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH;
|
return FXCODEC_STATUS_DECODE_FINISH;
|
}
|
|
FXCODEC_STATUS CJBig2_GRDProc::decode_Arith_Template1_unopt(
|
CJBig2_Image* pImage,
|
CJBig2_ArithDecoder* pArithDecoder,
|
JBig2ArithCtx* gbContext,
|
IFX_Pause* pPause) {
|
for (uint32_t h = 0; h < GBH; h++) {
|
if (TPGDON)
|
m_LTP = m_LTP ^ pArithDecoder->DECODE(&gbContext[0x0795]);
|
if (m_LTP) {
|
pImage->copyLine(h, h - 1);
|
} else {
|
uint32_t line1 = pImage->getPixel(2, h - 2);
|
line1 |= pImage->getPixel(1, h - 2) << 1;
|
line1 |= pImage->getPixel(0, h - 2) << 2;
|
uint32_t line2 = pImage->getPixel(2, h - 1);
|
line2 |= pImage->getPixel(1, h - 1) << 1;
|
line2 |= pImage->getPixel(0, h - 1) << 2;
|
uint32_t line3 = 0;
|
for (uint32_t w = 0; w < GBW; w++) {
|
FX_BOOL bVal;
|
if (USESKIP && SKIP->getPixel(w, h)) {
|
bVal = 0;
|
} else {
|
uint32_t CONTEXT = line3;
|
CONTEXT |= pImage->getPixel(w + GBAT[0], h + GBAT[1]) << 3;
|
CONTEXT |= line2 << 4;
|
CONTEXT |= line1 << 9;
|
bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
}
|
if (bVal) {
|
pImage->setPixel(w, h, bVal);
|
}
|
line1 = ((line1 << 1) | pImage->getPixel(w + 3, h - 2)) & 0x0f;
|
line2 = ((line2 << 1) | pImage->getPixel(w + 3, h - 1)) & 0x1f;
|
line3 = ((line3 << 1) | bVal) & 0x07;
|
}
|
}
|
if (pPause && pPause->NeedToPauseNow()) {
|
m_loopIndex++;
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE;
|
return FXCODEC_STATUS_DECODE_TOBECONTINUE;
|
}
|
}
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH;
|
return FXCODEC_STATUS_DECODE_FINISH;
|
}
|
|
FXCODEC_STATUS CJBig2_GRDProc::decode_Arith_Template2_opt3(
|
CJBig2_Image* pImage,
|
CJBig2_ArithDecoder* pArithDecoder,
|
JBig2ArithCtx* gbContext,
|
IFX_Pause* pPause) {
|
if (!m_pLine) {
|
m_pLine = pImage->m_pData;
|
}
|
int32_t nStride = pImage->m_nStride;
|
int32_t nStride2 = nStride << 1;
|
int32_t nLineBytes = ((GBW + 7) >> 3) - 1;
|
int32_t nBitsLeft = GBW - (nLineBytes << 3);
|
for (; m_loopIndex < GBH; m_loopIndex++) {
|
if (TPGDON)
|
m_LTP = m_LTP ^ pArithDecoder->DECODE(&gbContext[0x00e5]);
|
if (m_LTP) {
|
pImage->copyLine(m_loopIndex, m_loopIndex - 1);
|
} else {
|
if (m_loopIndex > 1) {
|
uint8_t* pLine1 = m_pLine - nStride2;
|
uint8_t* pLine2 = m_pLine - nStride;
|
uint32_t line1 = (*pLine1++) << 1;
|
uint32_t line2 = *pLine2++;
|
uint32_t CONTEXT = (line1 & 0x0380) | ((line2 >> 3) & 0x007c);
|
for (int32_t cc = 0; cc < nLineBytes; cc++) {
|
line1 = (line1 << 8) | ((*pLine1++) << 1);
|
line2 = (line2 << 8) | (*pLine2++);
|
uint8_t cVal = 0;
|
for (int32_t k = 7; k >= 0; k--) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal |= bVal << k;
|
CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal |
|
((line1 >> k) & 0x0080) | ((line2 >> (k + 3)) & 0x0004);
|
}
|
m_pLine[cc] = cVal;
|
}
|
line1 <<= 8;
|
line2 <<= 8;
|
uint8_t cVal1 = 0;
|
for (int32_t k = 0; k < nBitsLeft; k++) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal1 |= bVal << (7 - k);
|
CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal |
|
((line1 >> (7 - k)) & 0x0080) |
|
((line2 >> (10 - k)) & 0x0004);
|
}
|
m_pLine[nLineBytes] = cVal1;
|
} else {
|
uint8_t* pLine2 = m_pLine - nStride;
|
uint32_t line2 = (m_loopIndex & 1) ? (*pLine2++) : 0;
|
uint32_t CONTEXT = (line2 >> 3) & 0x007c;
|
for (int32_t cc = 0; cc < nLineBytes; cc++) {
|
if (m_loopIndex & 1) {
|
line2 = (line2 << 8) | (*pLine2++);
|
}
|
uint8_t cVal = 0;
|
for (int32_t k = 7; k >= 0; k--) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal |= bVal << k;
|
CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal |
|
((line2 >> (k + 3)) & 0x0004);
|
}
|
m_pLine[cc] = cVal;
|
}
|
line2 <<= 8;
|
uint8_t cVal1 = 0;
|
for (int32_t k = 0; k < nBitsLeft; k++) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal1 |= bVal << (7 - k);
|
CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal |
|
(((line2 >> (10 - k))) & 0x0004);
|
}
|
m_pLine[nLineBytes] = cVal1;
|
}
|
}
|
m_pLine += nStride;
|
if (pPause && m_loopIndex % 50 == 0 && pPause->NeedToPauseNow()) {
|
m_loopIndex++;
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE;
|
return FXCODEC_STATUS_DECODE_TOBECONTINUE;
|
}
|
}
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH;
|
return FXCODEC_STATUS_DECODE_FINISH;
|
}
|
|
FXCODEC_STATUS CJBig2_GRDProc::decode_Arith_Template2_unopt(
|
CJBig2_Image* pImage,
|
CJBig2_ArithDecoder* pArithDecoder,
|
JBig2ArithCtx* gbContext,
|
IFX_Pause* pPause) {
|
for (; m_loopIndex < GBH; m_loopIndex++) {
|
if (TPGDON)
|
m_LTP = m_LTP ^ pArithDecoder->DECODE(&gbContext[0x00e5]);
|
if (m_LTP) {
|
pImage->copyLine(m_loopIndex, m_loopIndex - 1);
|
} else {
|
uint32_t line1 = pImage->getPixel(1, m_loopIndex - 2);
|
line1 |= pImage->getPixel(0, m_loopIndex - 2) << 1;
|
uint32_t line2 = pImage->getPixel(1, m_loopIndex - 1);
|
line2 |= pImage->getPixel(0, m_loopIndex - 1) << 1;
|
uint32_t line3 = 0;
|
for (uint32_t w = 0; w < GBW; w++) {
|
FX_BOOL bVal;
|
if (USESKIP && SKIP->getPixel(w, m_loopIndex)) {
|
bVal = 0;
|
} else {
|
uint32_t CONTEXT = line3;
|
CONTEXT |= pImage->getPixel(w + GBAT[0], m_loopIndex + GBAT[1]) << 2;
|
CONTEXT |= line2 << 3;
|
CONTEXT |= line1 << 7;
|
bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
}
|
if (bVal) {
|
pImage->setPixel(w, m_loopIndex, bVal);
|
}
|
line1 =
|
((line1 << 1) | pImage->getPixel(w + 2, m_loopIndex - 2)) & 0x07;
|
line2 =
|
((line2 << 1) | pImage->getPixel(w + 2, m_loopIndex - 1)) & 0x0f;
|
line3 = ((line3 << 1) | bVal) & 0x03;
|
}
|
}
|
if (pPause && pPause->NeedToPauseNow()) {
|
m_loopIndex++;
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE;
|
return FXCODEC_STATUS_DECODE_TOBECONTINUE;
|
}
|
}
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH;
|
return FXCODEC_STATUS_DECODE_FINISH;
|
}
|
|
FXCODEC_STATUS CJBig2_GRDProc::decode_Arith_Template3_opt3(
|
CJBig2_Image* pImage,
|
CJBig2_ArithDecoder* pArithDecoder,
|
JBig2ArithCtx* gbContext,
|
IFX_Pause* pPause) {
|
if (!m_pLine)
|
m_pLine = pImage->m_pData;
|
|
int32_t nStride = pImage->m_nStride;
|
int32_t nLineBytes = ((GBW + 7) >> 3) - 1;
|
int32_t nBitsLeft = GBW - (nLineBytes << 3);
|
for (; m_loopIndex < GBH; m_loopIndex++) {
|
if (TPGDON)
|
m_LTP = m_LTP ^ pArithDecoder->DECODE(&gbContext[0x0195]);
|
if (m_LTP) {
|
pImage->copyLine(m_loopIndex, m_loopIndex - 1);
|
} else {
|
if (m_loopIndex > 0) {
|
uint8_t* pLine1 = m_pLine - nStride;
|
uint32_t line1 = *pLine1++;
|
uint32_t CONTEXT = (line1 >> 1) & 0x03f0;
|
for (int32_t cc = 0; cc < nLineBytes; cc++) {
|
line1 = (line1 << 8) | (*pLine1++);
|
uint8_t cVal = 0;
|
for (int32_t k = 7; k >= 0; k--) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal |= bVal << k;
|
CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal |
|
((line1 >> (k + 1)) & 0x0010);
|
}
|
m_pLine[cc] = cVal;
|
}
|
line1 <<= 8;
|
uint8_t cVal1 = 0;
|
for (int32_t k = 0; k < nBitsLeft; k++) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal1 |= bVal << (7 - k);
|
CONTEXT =
|
((CONTEXT & 0x01f7) << 1) | bVal | ((line1 >> (8 - k)) & 0x0010);
|
}
|
m_pLine[nLineBytes] = cVal1;
|
} else {
|
uint32_t CONTEXT = 0;
|
for (int32_t cc = 0; cc < nLineBytes; cc++) {
|
uint8_t cVal = 0;
|
for (int32_t k = 7; k >= 0; k--) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal |= bVal << k;
|
CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal;
|
}
|
m_pLine[cc] = cVal;
|
}
|
uint8_t cVal1 = 0;
|
for (int32_t k = 0; k < nBitsLeft; k++) {
|
FX_BOOL bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
cVal1 |= bVal << (7 - k);
|
CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal;
|
}
|
m_pLine[nLineBytes] = cVal1;
|
}
|
}
|
m_pLine += nStride;
|
if (pPause && pPause->NeedToPauseNow()) {
|
m_loopIndex++;
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE;
|
return FXCODEC_STATUS_DECODE_TOBECONTINUE;
|
}
|
}
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH;
|
return FXCODEC_STATUS_DECODE_FINISH;
|
}
|
|
FXCODEC_STATUS CJBig2_GRDProc::decode_Arith_Template3_unopt(
|
CJBig2_Image* pImage,
|
CJBig2_ArithDecoder* pArithDecoder,
|
JBig2ArithCtx* gbContext,
|
IFX_Pause* pPause) {
|
for (; m_loopIndex < GBH; m_loopIndex++) {
|
if (TPGDON)
|
m_LTP = m_LTP ^ pArithDecoder->DECODE(&gbContext[0x0195]);
|
if (m_LTP) {
|
pImage->copyLine(m_loopIndex, m_loopIndex - 1);
|
} else {
|
uint32_t line1 = pImage->getPixel(1, m_loopIndex - 1);
|
line1 |= pImage->getPixel(0, m_loopIndex - 1) << 1;
|
uint32_t line2 = 0;
|
for (uint32_t w = 0; w < GBW; w++) {
|
FX_BOOL bVal;
|
if (USESKIP && SKIP->getPixel(w, m_loopIndex)) {
|
bVal = 0;
|
} else {
|
uint32_t CONTEXT = line2;
|
CONTEXT |= pImage->getPixel(w + GBAT[0], m_loopIndex + GBAT[1]) << 4;
|
CONTEXT |= line1 << 5;
|
bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
|
}
|
if (bVal) {
|
pImage->setPixel(w, m_loopIndex, bVal);
|
}
|
line1 =
|
((line1 << 1) | pImage->getPixel(w + 2, m_loopIndex - 1)) & 0x1f;
|
line2 = ((line2 << 1) | bVal) & 0x0f;
|
}
|
}
|
if (pPause && pPause->NeedToPauseNow()) {
|
m_loopIndex++;
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE;
|
return FXCODEC_STATUS_DECODE_TOBECONTINUE;
|
}
|
}
|
m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH;
|
return FXCODEC_STATUS_DECODE_FINISH;
|
}
|
