diff options
Diffstat (limited to 'core/src/fxcodec/jbig2/JBig2_GrdProc.cpp')
-rw-r--r-- | core/src/fxcodec/jbig2/JBig2_GrdProc.cpp | 1259 |
1 files changed, 0 insertions, 1259 deletions
diff --git a/core/src/fxcodec/jbig2/JBig2_GrdProc.cpp b/core/src/fxcodec/jbig2/JBig2_GrdProc.cpp deleted file mode 100644 index cf0f60405c..0000000000 --- a/core/src/fxcodec/jbig2/JBig2_GrdProc.cpp +++ /dev/null @@ -1,1259 +0,0 @@ -// Copyright 2015 PDFium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com - -#include "core/src/fxcodec/jbig2/JBig2_GrdProc.h" - -#include <memory> - -#include "core/include/fxcodec/fx_codec.h" -#include "core/src/fxcodec/jbig2/JBig2_ArithDecoder.h" -#include "core/src/fxcodec/jbig2/JBig2_BitStream.h" -#include "core/src/fxcodec/jbig2/JBig2_Image.h" - -CJBig2_GRDProc::CJBig2_GRDProc() - : m_loopIndex(0), - m_pLine(nullptr), - m_pPause(nullptr), - m_DecodeType(0), - LTP(0) { - m_ReplaceRect.left = 0; - m_ReplaceRect.bottom = 0; - m_ReplaceRect.top = 0; - m_ReplaceRect.right = 0; -} - -bool CJBig2_GRDProc::UseTemplate0Opt3() const { - return (GBAT[0] == 3) && (GBAT[1] == -1) && (GBAT[2] == -3) && - (GBAT[3] == -1) && (GBAT[4] == 2) && (GBAT[5] == -2) && - (GBAT[6] == -2) && (GBAT[7] == -2); -} - -bool CJBig2_GRDProc::UseTemplate1Opt3() const { - return (GBAT[0] == 3) && (GBAT[1] == -1); -} - -bool CJBig2_GRDProc::UseTemplate23Opt3() const { - return (GBAT[0] == 2) && (GBAT[1] == -1); -} - -CJBig2_Image* CJBig2_GRDProc::decode_Arith(CJBig2_ArithDecoder* pArithDecoder, - JBig2ArithCtx* gbContext) { - if (GBW == 0 || GBH == 0) - return new CJBig2_Image(GBW, GBH); - - if (GBTEMPLATE == 0) { - if (UseTemplate0Opt3()) - return decode_Arith_Template0_opt3(pArithDecoder, gbContext); - return decode_Arith_Template0_unopt(pArithDecoder, gbContext); - } else if (GBTEMPLATE == 1) { - if (UseTemplate1Opt3()) - return decode_Arith_Template1_opt3(pArithDecoder, gbContext); - return decode_Arith_Template1_unopt(pArithDecoder, gbContext); - } else if (GBTEMPLATE == 2) { - if (UseTemplate23Opt3()) - return decode_Arith_Template2_opt3(pArithDecoder, gbContext); - return decode_Arith_Template2_unopt(pArithDecoder, gbContext); - } else { - if (UseTemplate23Opt3()) - return decode_Arith_Template3_opt3(pArithDecoder, gbContext); - return decode_Arith_Template3_unopt(pArithDecoder, gbContext); - } -} -CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template0_opt3( - CJBig2_ArithDecoder* pArithDecoder, - JBig2ArithCtx* gbContext) { - FX_BOOL LTP, SLTP, bVal; - FX_DWORD CONTEXT; - FX_DWORD line1, line2; - uint8_t* pLine, *pLine1, *pLine2, cVal; - int32_t nStride, nStride2, k; - int32_t nLineBytes, nBitsLeft, cc; - LTP = 0; - std::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH)); - if (!GBREG->m_pData) - return nullptr; - - pLine = GBREG->m_pData; - nStride = GBREG->m_nStride; - nStride2 = nStride << 1; - nLineBytes = ((GBW + 7) >> 3) - 1; - nBitsLeft = GBW - (nLineBytes << 3); - FX_DWORD height = GBH & 0x7fffffff; - for (FX_DWORD h = 0; h < height; h++) { - if (TPGDON) { - SLTP = pArithDecoder->DECODE(&gbContext[0x9b25]); - LTP = LTP ^ SLTP; - } - if (LTP == 1) { - GBREG->copyLine(h, h - 1); - } else { - if (h > 1) { - pLine1 = pLine - nStride2; - pLine2 = pLine - nStride; - line1 = (*pLine1++) << 6; - line2 = *pLine2++; - CONTEXT = ((line1 & 0xf800) | (line2 & 0x07f0)); - for (cc = 0; cc < nLineBytes; cc++) { - line1 = (line1 << 8) | ((*pLine1++) << 6); - line2 = (line2 << 8) | (*pLine2++); - cVal = 0; - for (k = 7; k >= 0; k--) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << k; - CONTEXT = (((CONTEXT & 0x7bf7) << 1) | bVal | - ((line1 >> k) & 0x0800) | ((line2 >> k) & 0x0010)); - } - pLine[cc] = cVal; - } - line1 <<= 8; - line2 <<= 8; - cVal = 0; - for (k = 0; k < nBitsLeft; k++) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << (7 - k); - CONTEXT = - (((CONTEXT & 0x7bf7) << 1) | bVal | - ((line1 >> (7 - k)) & 0x0800) | ((line2 >> (7 - k)) & 0x0010)); - } - pLine[nLineBytes] = cVal; - } else { - pLine2 = pLine - nStride; - line2 = (h & 1) ? (*pLine2++) : 0; - CONTEXT = (line2 & 0x07f0); - for (cc = 0; cc < nLineBytes; cc++) { - if (h & 1) { - line2 = (line2 << 8) | (*pLine2++); - } - cVal = 0; - for (k = 7; k >= 0; k--) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << k; - CONTEXT = - (((CONTEXT & 0x7bf7) << 1) | bVal | ((line2 >> k) & 0x0010)); - } - pLine[cc] = cVal; - } - line2 <<= 8; - cVal = 0; - for (k = 0; k < nBitsLeft; k++) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << (7 - k); - CONTEXT = (((CONTEXT & 0x7bf7) << 1) | bVal | - (((line2 >> (7 - k))) & 0x0010)); - } - pLine[nLineBytes] = cVal; - } - } - pLine += nStride; - } - return GBREG.release(); -} - -CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template0_unopt( - CJBig2_ArithDecoder* pArithDecoder, - JBig2ArithCtx* gbContext) { - FX_BOOL LTP, SLTP, bVal; - FX_DWORD CONTEXT; - FX_DWORD line1, line2, line3; - LTP = 0; - std::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH)); - GBREG->fill(0); - for (FX_DWORD h = 0; h < GBH; h++) { - if (TPGDON) { - SLTP = pArithDecoder->DECODE(&gbContext[0x9b25]); - LTP = LTP ^ SLTP; - } - if (LTP == 1) { - GBREG->copyLine(h, h - 1); - } else { - line1 = GBREG->getPixel(1, h - 2); - line1 |= GBREG->getPixel(0, h - 2) << 1; - line2 = GBREG->getPixel(2, h - 1); - line2 |= GBREG->getPixel(1, h - 1) << 1; - line2 |= GBREG->getPixel(0, h - 1) << 2; - line3 = 0; - for (FX_DWORD w = 0; w < GBW; w++) { - if (USESKIP && SKIP->getPixel(w, h)) { - bVal = 0; - } else { - CONTEXT = line3; - CONTEXT |= GBREG->getPixel(w + GBAT[0], h + GBAT[1]) << 4; - CONTEXT |= line2 << 5; - CONTEXT |= GBREG->getPixel(w + GBAT[2], h + GBAT[3]) << 10; - CONTEXT |= GBREG->getPixel(w + GBAT[4], h + GBAT[5]) << 11; - CONTEXT |= line1 << 12; - CONTEXT |= GBREG->getPixel(w + GBAT[6], h + GBAT[7]) << 15; - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - } - if (bVal) { - GBREG->setPixel(w, h, bVal); - } - line1 = ((line1 << 1) | GBREG->getPixel(w + 2, h - 2)) & 0x07; - line2 = ((line2 << 1) | GBREG->getPixel(w + 3, h - 1)) & 0x1f; - line3 = ((line3 << 1) | bVal) & 0x0f; - } - } - } - return GBREG.release(); -} - -CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template1_opt3( - CJBig2_ArithDecoder* pArithDecoder, - JBig2ArithCtx* gbContext) { - FX_BOOL LTP, SLTP, bVal; - FX_DWORD CONTEXT; - FX_DWORD line1, line2; - uint8_t* pLine, *pLine1, *pLine2, cVal; - int32_t nStride, nStride2, k; - int32_t nLineBytes, nBitsLeft, cc; - LTP = 0; - std::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH)); - if (!GBREG->m_pData) - return nullptr; - - pLine = GBREG->m_pData; - nStride = GBREG->m_nStride; - nStride2 = nStride << 1; - nLineBytes = ((GBW + 7) >> 3) - 1; - nBitsLeft = GBW - (nLineBytes << 3); - for (FX_DWORD h = 0; h < GBH; h++) { - if (TPGDON) { - SLTP = pArithDecoder->DECODE(&gbContext[0x0795]); - LTP = LTP ^ SLTP; - } - if (LTP == 1) { - GBREG->copyLine(h, h - 1); - } else { - if (h > 1) { - pLine1 = pLine - nStride2; - pLine2 = pLine - nStride; - line1 = (*pLine1++) << 4; - line2 = *pLine2++; - CONTEXT = (line1 & 0x1e00) | ((line2 >> 1) & 0x01f8); - for (cc = 0; cc < nLineBytes; cc++) { - line1 = (line1 << 8) | ((*pLine1++) << 4); - line2 = (line2 << 8) | (*pLine2++); - cVal = 0; - for (k = 7; k >= 0; k--) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << k; - CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal | - ((line1 >> k) & 0x0200) | ((line2 >> (k + 1)) & 0x0008); - } - pLine[cc] = cVal; - } - line1 <<= 8; - line2 <<= 8; - cVal = 0; - for (k = 0; k < nBitsLeft; k++) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << (7 - k); - CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal | - ((line1 >> (7 - k)) & 0x0200) | - ((line2 >> (8 - k)) & 0x0008); - } - pLine[nLineBytes] = cVal; - } else { - pLine2 = pLine - nStride; - line2 = (h & 1) ? (*pLine2++) : 0; - CONTEXT = (line2 >> 1) & 0x01f8; - for (cc = 0; cc < nLineBytes; cc++) { - if (h & 1) { - line2 = (line2 << 8) | (*pLine2++); - } - cVal = 0; - for (k = 7; k >= 0; k--) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << k; - CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal | - ((line2 >> (k + 1)) & 0x0008); - } - pLine[cc] = cVal; - } - line2 <<= 8; - cVal = 0; - for (k = 0; k < nBitsLeft; k++) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << (7 - k); - CONTEXT = - ((CONTEXT & 0x0efb) << 1) | bVal | ((line2 >> (8 - k)) & 0x0008); - } - pLine[nLineBytes] = cVal; - } - } - pLine += nStride; - } - return GBREG.release(); -} - -CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template1_unopt( - CJBig2_ArithDecoder* pArithDecoder, - JBig2ArithCtx* gbContext) { - FX_BOOL LTP, SLTP, bVal; - FX_DWORD CONTEXT; - FX_DWORD line1, line2, line3; - LTP = 0; - std::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH)); - GBREG->fill(0); - for (FX_DWORD h = 0; h < GBH; h++) { - if (TPGDON) { - SLTP = pArithDecoder->DECODE(&gbContext[0x0795]); - LTP = LTP ^ SLTP; - } - if (LTP == 1) { - GBREG->copyLine(h, h - 1); - } else { - line1 = GBREG->getPixel(2, h - 2); - line1 |= GBREG->getPixel(1, h - 2) << 1; - line1 |= GBREG->getPixel(0, h - 2) << 2; - line2 = GBREG->getPixel(2, h - 1); - line2 |= GBREG->getPixel(1, h - 1) << 1; - line2 |= GBREG->getPixel(0, h - 1) << 2; - line3 = 0; - for (FX_DWORD w = 0; w < GBW; w++) { - if (USESKIP && SKIP->getPixel(w, h)) { - bVal = 0; - } else { - CONTEXT = line3; - CONTEXT |= GBREG->getPixel(w + GBAT[0], h + GBAT[1]) << 3; - CONTEXT |= line2 << 4; - CONTEXT |= line1 << 9; - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - } - if (bVal) { - GBREG->setPixel(w, h, bVal); - } - line1 = ((line1 << 1) | GBREG->getPixel(w + 3, h - 2)) & 0x0f; - line2 = ((line2 << 1) | GBREG->getPixel(w + 3, h - 1)) & 0x1f; - line3 = ((line3 << 1) | bVal) & 0x07; - } - } - } - return GBREG.release(); -} -CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template2_opt3( - CJBig2_ArithDecoder* pArithDecoder, - JBig2ArithCtx* gbContext) { - FX_BOOL LTP, SLTP, bVal; - FX_DWORD CONTEXT; - FX_DWORD line1, line2; - uint8_t* pLine, *pLine1, *pLine2, cVal; - int32_t nStride, nStride2, k; - int32_t nLineBytes, nBitsLeft, cc; - LTP = 0; - std::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH)); - if (!GBREG->m_pData) - return nullptr; - - pLine = GBREG->m_pData; - nStride = GBREG->m_nStride; - nStride2 = nStride << 1; - nLineBytes = ((GBW + 7) >> 3) - 1; - nBitsLeft = GBW - (nLineBytes << 3); - for (FX_DWORD h = 0; h < GBH; h++) { - if (TPGDON) { - SLTP = pArithDecoder->DECODE(&gbContext[0x00e5]); - LTP = LTP ^ SLTP; - } - if (LTP == 1) { - GBREG->copyLine(h, h - 1); - } else { - if (h > 1) { - pLine1 = pLine - nStride2; - pLine2 = pLine - nStride; - line1 = (*pLine1++) << 1; - line2 = *pLine2++; - CONTEXT = (line1 & 0x0380) | ((line2 >> 3) & 0x007c); - for (cc = 0; cc < nLineBytes; cc++) { - line1 = (line1 << 8) | ((*pLine1++) << 1); - line2 = (line2 << 8) | (*pLine2++); - cVal = 0; - for (k = 7; k >= 0; k--) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << k; - CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | - ((line1 >> k) & 0x0080) | ((line2 >> (k + 3)) & 0x0004); - } - pLine[cc] = cVal; - } - line1 <<= 8; - line2 <<= 8; - cVal = 0; - for (k = 0; k < nBitsLeft; k++) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << (7 - k); - CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | - ((line1 >> (7 - k)) & 0x0080) | - ((line2 >> (10 - k)) & 0x0004); - } - pLine[nLineBytes] = cVal; - } else { - pLine2 = pLine - nStride; - line2 = (h & 1) ? (*pLine2++) : 0; - CONTEXT = (line2 >> 3) & 0x007c; - for (cc = 0; cc < nLineBytes; cc++) { - if (h & 1) { - line2 = (line2 << 8) | (*pLine2++); - } - cVal = 0; - for (k = 7; k >= 0; k--) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << k; - CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | - ((line2 >> (k + 3)) & 0x0004); - } - pLine[cc] = cVal; - } - line2 <<= 8; - cVal = 0; - for (k = 0; k < nBitsLeft; k++) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << (7 - k); - CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | - (((line2 >> (10 - k))) & 0x0004); - } - pLine[nLineBytes] = cVal; - } - } - pLine += nStride; - } - return GBREG.release(); -} - -CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template2_unopt( - CJBig2_ArithDecoder* pArithDecoder, - JBig2ArithCtx* gbContext) { - FX_BOOL LTP, SLTP, bVal; - FX_DWORD CONTEXT; - FX_DWORD line1, line2, line3; - LTP = 0; - std::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH)); - GBREG->fill(0); - for (FX_DWORD h = 0; h < GBH; h++) { - if (TPGDON) { - SLTP = pArithDecoder->DECODE(&gbContext[0x00e5]); - LTP = LTP ^ SLTP; - } - if (LTP == 1) { - GBREG->copyLine(h, h - 1); - } else { - line1 = GBREG->getPixel(1, h - 2); - line1 |= GBREG->getPixel(0, h - 2) << 1; - line2 = GBREG->getPixel(1, h - 1); - line2 |= GBREG->getPixel(0, h - 1) << 1; - line3 = 0; - for (FX_DWORD w = 0; w < GBW; w++) { - if (USESKIP && SKIP->getPixel(w, h)) { - bVal = 0; - } else { - CONTEXT = line3; - CONTEXT |= GBREG->getPixel(w + GBAT[0], h + GBAT[1]) << 2; - CONTEXT |= line2 << 3; - CONTEXT |= line1 << 7; - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - } - if (bVal) { - GBREG->setPixel(w, h, bVal); - } - line1 = ((line1 << 1) | GBREG->getPixel(w + 2, h - 2)) & 0x07; - line2 = ((line2 << 1) | GBREG->getPixel(w + 2, h - 1)) & 0x0f; - line3 = ((line3 << 1) | bVal) & 0x03; - } - } - } - return GBREG.release(); -} - -CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template3_opt3( - CJBig2_ArithDecoder* pArithDecoder, - JBig2ArithCtx* gbContext) { - FX_BOOL LTP, SLTP, bVal; - FX_DWORD CONTEXT; - FX_DWORD line1; - uint8_t* pLine, *pLine1, cVal; - int32_t nStride, k; - int32_t nLineBytes, nBitsLeft, cc; - LTP = 0; - std::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH)); - if (!GBREG->m_pData) - return nullptr; - - pLine = GBREG->m_pData; - nStride = GBREG->m_nStride; - nLineBytes = ((GBW + 7) >> 3) - 1; - nBitsLeft = GBW - (nLineBytes << 3); - for (FX_DWORD h = 0; h < GBH; h++) { - if (TPGDON) { - SLTP = pArithDecoder->DECODE(&gbContext[0x0195]); - LTP = LTP ^ SLTP; - } - if (LTP == 1) { - GBREG->copyLine(h, h - 1); - } else { - if (h > 0) { - pLine1 = pLine - nStride; - line1 = *pLine1++; - CONTEXT = (line1 >> 1) & 0x03f0; - for (cc = 0; cc < nLineBytes; cc++) { - line1 = (line1 << 8) | (*pLine1++); - cVal = 0; - for (k = 7; k >= 0; k--) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << k; - CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal | - ((line1 >> (k + 1)) & 0x0010); - } - pLine[cc] = cVal; - } - line1 <<= 8; - cVal = 0; - for (k = 0; k < nBitsLeft; k++) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << (7 - k); - CONTEXT = - ((CONTEXT & 0x01f7) << 1) | bVal | ((line1 >> (8 - k)) & 0x0010); - } - pLine[nLineBytes] = cVal; - } else { - CONTEXT = 0; - for (cc = 0; cc < nLineBytes; cc++) { - cVal = 0; - for (k = 7; k >= 0; k--) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << k; - CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal; - } - pLine[cc] = cVal; - } - cVal = 0; - for (k = 0; k < nBitsLeft; k++) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << (7 - k); - CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal; - } - pLine[nLineBytes] = cVal; - } - } - pLine += nStride; - } - return GBREG.release(); -} - -CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template3_unopt( - CJBig2_ArithDecoder* pArithDecoder, - JBig2ArithCtx* gbContext) { - FX_BOOL LTP, SLTP, bVal; - FX_DWORD CONTEXT; - FX_DWORD line1, line2; - LTP = 0; - std::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH)); - GBREG->fill(0); - for (FX_DWORD h = 0; h < GBH; h++) { - if (TPGDON) { - SLTP = pArithDecoder->DECODE(&gbContext[0x0195]); - LTP = LTP ^ SLTP; - } - if (LTP == 1) { - GBREG->copyLine(h, h - 1); - } else { - line1 = GBREG->getPixel(1, h - 1); - line1 |= GBREG->getPixel(0, h - 1) << 1; - line2 = 0; - for (FX_DWORD w = 0; w < GBW; w++) { - if (USESKIP && SKIP->getPixel(w, h)) { - bVal = 0; - } else { - 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; - LTP = 0; - 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; (FX_DWORD)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) { - FX_BOOL SLTP, bVal; - FX_DWORD CONTEXT; - FX_DWORD line1, line2; - uint8_t* pLine1, *pLine2, cVal; - int32_t nStride, nStride2, k; - int32_t nLineBytes, nBitsLeft, cc; - if (!m_pLine) { - m_pLine = pImage->m_pData; - } - nStride = pImage->m_nStride; - nStride2 = nStride << 1; - nLineBytes = ((GBW + 7) >> 3) - 1; - nBitsLeft = GBW - (nLineBytes << 3); - FX_DWORD height = GBH & 0x7fffffff; - for (; m_loopIndex < height; m_loopIndex++) { - if (TPGDON) { - SLTP = pArithDecoder->DECODE(&gbContext[0x9b25]); - LTP = LTP ^ SLTP; - } - if (LTP == 1) { - pImage->copyLine(m_loopIndex, m_loopIndex - 1); - } else { - if (m_loopIndex > 1) { - pLine1 = m_pLine - nStride2; - pLine2 = m_pLine - nStride; - line1 = (*pLine1++) << 6; - line2 = *pLine2++; - CONTEXT = ((line1 & 0xf800) | (line2 & 0x07f0)); - for (cc = 0; cc < nLineBytes; cc++) { - line1 = (line1 << 8) | ((*pLine1++) << 6); - line2 = (line2 << 8) | (*pLine2++); - cVal = 0; - for (k = 7; k >= 0; k--) { - 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; - cVal = 0; - for (k = 0; k < nBitsLeft; k++) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << (7 - k); - CONTEXT = - (((CONTEXT & 0x7bf7) << 1) | bVal | - ((line1 >> (7 - k)) & 0x0800) | ((line2 >> (7 - k)) & 0x0010)); - } - m_pLine[nLineBytes] = cVal; - } else { - pLine2 = m_pLine - nStride; - line2 = (m_loopIndex & 1) ? (*pLine2++) : 0; - CONTEXT = (line2 & 0x07f0); - for (cc = 0; cc < nLineBytes; cc++) { - if (m_loopIndex & 1) { - line2 = (line2 << 8) | (*pLine2++); - } - cVal = 0; - for (k = 7; k >= 0; k--) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << k; - CONTEXT = - (((CONTEXT & 0x7bf7) << 1) | bVal | ((line2 >> k) & 0x0010)); - } - m_pLine[cc] = cVal; - } - line2 <<= 8; - cVal = 0; - for (k = 0; k < nBitsLeft; k++) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << (7 - k); - CONTEXT = (((CONTEXT & 0x7bf7) << 1) | bVal | - ((line2 >> (7 - k)) & 0x0010)); - } - m_pLine[nLineBytes] = cVal; - } - } - 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) { - FX_BOOL SLTP, bVal; - FX_DWORD CONTEXT; - FX_DWORD line1, line2, line3; - for (; m_loopIndex < GBH; m_loopIndex++) { - if (TPGDON) { - SLTP = pArithDecoder->DECODE(&gbContext[0x9b25]); - LTP = LTP ^ SLTP; - } - if (LTP == 1) { - pImage->copyLine(m_loopIndex, m_loopIndex - 1); - } else { - line1 = pImage->getPixel(1, m_loopIndex - 2); - line1 |= pImage->getPixel(0, m_loopIndex - 2) << 1; - line2 = pImage->getPixel(2, m_loopIndex - 1); - line2 |= pImage->getPixel(1, m_loopIndex - 1) << 1; - line2 |= pImage->getPixel(0, m_loopIndex - 1) << 2; - line3 = 0; - for (FX_DWORD w = 0; w < GBW; w++) { - if (USESKIP && SKIP->getPixel(w, m_loopIndex)) { - bVal = 0; - } else { - 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) { - FX_BOOL SLTP, bVal; - FX_DWORD CONTEXT; - FX_DWORD line1, line2; - uint8_t* pLine1, *pLine2, cVal; - int32_t nStride, nStride2, k; - int32_t nLineBytes, nBitsLeft, cc; - if (!m_pLine) { - m_pLine = pImage->m_pData; - } - nStride = pImage->m_nStride; - nStride2 = nStride << 1; - nLineBytes = ((GBW + 7) >> 3) - 1; - nBitsLeft = GBW - (nLineBytes << 3); - for (; m_loopIndex < GBH; m_loopIndex++) { - if (TPGDON) { - SLTP = pArithDecoder->DECODE(&gbContext[0x0795]); - LTP = LTP ^ SLTP; - } - if (LTP == 1) { - pImage->copyLine(m_loopIndex, m_loopIndex - 1); - } else { - if (m_loopIndex > 1) { - pLine1 = m_pLine - nStride2; - pLine2 = m_pLine - nStride; - line1 = (*pLine1++) << 4; - line2 = *pLine2++; - CONTEXT = (line1 & 0x1e00) | ((line2 >> 1) & 0x01f8); - for (cc = 0; cc < nLineBytes; cc++) { - line1 = (line1 << 8) | ((*pLine1++) << 4); - line2 = (line2 << 8) | (*pLine2++); - cVal = 0; - for (k = 7; k >= 0; k--) { - 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; - cVal = 0; - for (k = 0; k < nBitsLeft; k++) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << (7 - k); - CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal | - ((line1 >> (7 - k)) & 0x0200) | - ((line2 >> (8 - k)) & 0x0008); - } - m_pLine[nLineBytes] = cVal; - } else { - pLine2 = m_pLine - nStride; - line2 = (m_loopIndex & 1) ? (*pLine2++) : 0; - CONTEXT = (line2 >> 1) & 0x01f8; - for (cc = 0; cc < nLineBytes; cc++) { - if (m_loopIndex & 1) { - line2 = (line2 << 8) | (*pLine2++); - } - cVal = 0; - for (k = 7; k >= 0; k--) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << k; - CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal | - ((line2 >> (k + 1)) & 0x0008); - } - m_pLine[cc] = cVal; - } - line2 <<= 8; - cVal = 0; - for (k = 0; k < nBitsLeft; k++) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << (7 - k); - CONTEXT = - ((CONTEXT & 0x0efb) << 1) | bVal | ((line2 >> (8 - k)) & 0x0008); - } - m_pLine[nLineBytes] = cVal; - } - } - 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) { - FX_BOOL SLTP, bVal; - FX_DWORD CONTEXT; - FX_DWORD line1, line2, line3; - for (FX_DWORD h = 0; h < GBH; h++) { - if (TPGDON) { - SLTP = pArithDecoder->DECODE(&gbContext[0x0795]); - LTP = LTP ^ SLTP; - } - if (LTP == 1) { - pImage->copyLine(h, h - 1); - } else { - line1 = pImage->getPixel(2, h - 2); - line1 |= pImage->getPixel(1, h - 2) << 1; - line1 |= pImage->getPixel(0, h - 2) << 2; - line2 = pImage->getPixel(2, h - 1); - line2 |= pImage->getPixel(1, h - 1) << 1; - line2 |= pImage->getPixel(0, h - 1) << 2; - line3 = 0; - for (FX_DWORD w = 0; w < GBW; w++) { - if (USESKIP && SKIP->getPixel(w, h)) { - bVal = 0; - } else { - 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) { - FX_BOOL SLTP, bVal; - FX_DWORD CONTEXT; - FX_DWORD line1, line2; - uint8_t* pLine1, *pLine2, cVal; - int32_t nStride, nStride2, k; - int32_t nLineBytes, nBitsLeft, cc; - if (!m_pLine) { - m_pLine = pImage->m_pData; - } - nStride = pImage->m_nStride; - nStride2 = nStride << 1; - nLineBytes = ((GBW + 7) >> 3) - 1; - nBitsLeft = GBW - (nLineBytes << 3); - for (; m_loopIndex < GBH; m_loopIndex++) { - if (TPGDON) { - SLTP = pArithDecoder->DECODE(&gbContext[0x00e5]); - LTP = LTP ^ SLTP; - } - if (LTP == 1) { - pImage->copyLine(m_loopIndex, m_loopIndex - 1); - } else { - if (m_loopIndex > 1) { - pLine1 = m_pLine - nStride2; - pLine2 = m_pLine - nStride; - line1 = (*pLine1++) << 1; - line2 = *pLine2++; - CONTEXT = (line1 & 0x0380) | ((line2 >> 3) & 0x007c); - for (cc = 0; cc < nLineBytes; cc++) { - line1 = (line1 << 8) | ((*pLine1++) << 1); - line2 = (line2 << 8) | (*pLine2++); - cVal = 0; - for (k = 7; k >= 0; k--) { - 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; - cVal = 0; - for (k = 0; k < nBitsLeft; k++) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << (7 - k); - CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | - ((line1 >> (7 - k)) & 0x0080) | - ((line2 >> (10 - k)) & 0x0004); - } - m_pLine[nLineBytes] = cVal; - } else { - pLine2 = m_pLine - nStride; - line2 = (m_loopIndex & 1) ? (*pLine2++) : 0; - CONTEXT = (line2 >> 3) & 0x007c; - for (cc = 0; cc < nLineBytes; cc++) { - if (m_loopIndex & 1) { - line2 = (line2 << 8) | (*pLine2++); - } - cVal = 0; - for (k = 7; k >= 0; k--) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << k; - CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | - ((line2 >> (k + 3)) & 0x0004); - } - m_pLine[cc] = cVal; - } - line2 <<= 8; - cVal = 0; - for (k = 0; k < nBitsLeft; k++) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << (7 - k); - CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | - (((line2 >> (10 - k))) & 0x0004); - } - m_pLine[nLineBytes] = cVal; - } - } - 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) { - FX_BOOL SLTP, bVal; - FX_DWORD CONTEXT; - FX_DWORD line1, line2, line3; - for (; m_loopIndex < GBH; m_loopIndex++) { - if (TPGDON) { - SLTP = pArithDecoder->DECODE(&gbContext[0x00e5]); - LTP = LTP ^ SLTP; - } - if (LTP == 1) { - pImage->copyLine(m_loopIndex, m_loopIndex - 1); - } else { - line1 = pImage->getPixel(1, m_loopIndex - 2); - line1 |= pImage->getPixel(0, m_loopIndex - 2) << 1; - line2 = pImage->getPixel(1, m_loopIndex - 1); - line2 |= pImage->getPixel(0, m_loopIndex - 1) << 1; - line3 = 0; - for (FX_DWORD w = 0; w < GBW; w++) { - if (USESKIP && SKIP->getPixel(w, m_loopIndex)) { - bVal = 0; - } else { - 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) { - FX_BOOL SLTP, bVal; - FX_DWORD CONTEXT; - FX_DWORD line1; - uint8_t* pLine1, cVal; - int32_t nStride, k; - int32_t nLineBytes, nBitsLeft, cc; - if (!m_pLine) { - m_pLine = pImage->m_pData; - } - nStride = pImage->m_nStride; - nLineBytes = ((GBW + 7) >> 3) - 1; - nBitsLeft = GBW - (nLineBytes << 3); - for (; m_loopIndex < GBH; m_loopIndex++) { - if (TPGDON) { - SLTP = pArithDecoder->DECODE(&gbContext[0x0195]); - LTP = LTP ^ SLTP; - } - if (LTP == 1) { - pImage->copyLine(m_loopIndex, m_loopIndex - 1); - } else { - if (m_loopIndex > 0) { - pLine1 = m_pLine - nStride; - line1 = *pLine1++; - CONTEXT = (line1 >> 1) & 0x03f0; - for (cc = 0; cc < nLineBytes; cc++) { - line1 = (line1 << 8) | (*pLine1++); - cVal = 0; - for (k = 7; k >= 0; k--) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << k; - CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal | - ((line1 >> (k + 1)) & 0x0010); - } - m_pLine[cc] = cVal; - } - line1 <<= 8; - cVal = 0; - for (k = 0; k < nBitsLeft; k++) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << (7 - k); - CONTEXT = - ((CONTEXT & 0x01f7) << 1) | bVal | ((line1 >> (8 - k)) & 0x0010); - } - m_pLine[nLineBytes] = cVal; - } else { - CONTEXT = 0; - for (cc = 0; cc < nLineBytes; cc++) { - cVal = 0; - for (k = 7; k >= 0; k--) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << k; - CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal; - } - m_pLine[cc] = cVal; - } - cVal = 0; - for (k = 0; k < nBitsLeft; k++) { - bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); - cVal |= bVal << (7 - k); - CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal; - } - m_pLine[nLineBytes] = cVal; - } - } - 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) { - FX_BOOL SLTP, bVal; - FX_DWORD CONTEXT; - FX_DWORD line1, line2; - for (; m_loopIndex < GBH; m_loopIndex++) { - if (TPGDON) { - SLTP = pArithDecoder->DECODE(&gbContext[0x0195]); - LTP = LTP ^ SLTP; - } - if (LTP == 1) { - pImage->copyLine(m_loopIndex, m_loopIndex - 1); - } else { - line1 = pImage->getPixel(1, m_loopIndex - 1); - line1 |= pImage->getPixel(0, m_loopIndex - 1) << 1; - line2 = 0; - for (FX_DWORD w = 0; w < GBW; w++) { - if (USESKIP && SKIP->getPixel(w, m_loopIndex)) { - bVal = 0; - } else { - 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; -} |