| // 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/fxcodec/jbig2/JBig2_GrdProc.h" |
| |
| #include <memory> |
| |
| #include "core/fxcodec/fx_codec.h" |
| #include "core/fxcodec/jbig2/JBig2_ArithDecoder.h" |
| #include "core/fxcodec/jbig2/JBig2_BitStream.h" |
| #include "core/fxcodec/jbig2/JBig2_Image.h" |
| #include "third_party/base/ptr_util.h" |
| |
| CJBig2_GRDProc::CJBig2_GRDProc() |
| : m_loopIndex(0), |
| m_pLine(nullptr), |
| m_DecodeType(0), |
| m_LTP(0) { |
| m_ReplaceRect.left = 0; |
| m_ReplaceRect.bottom = 0; |
| m_ReplaceRect.top = 0; |
| m_ReplaceRect.right = 0; |
| } |
| |
| CJBig2_GRDProc::~CJBig2_GRDProc() {} |
| |
| 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) { |
| auto GBREG = pdfium::MakeUnique<CJBig2_Image>(GBW, GBH); |
| if (!GBREG->m_pData) |
| return nullptr; |
| |
| int LTP = 0; |
| uint8_t* pLine = GBREG->m_pData; |
| int32_t nStride = GBREG->stride(); |
| int32_t nStride2 = nStride << 1; |
| int32_t nLineBytes = ((GBW + 7) >> 3) - 1; |
| int32_t nBitsLeft = GBW - (nLineBytes << 3); |
| uint32_t height = GBH & 0x7fffffff; |
| for (uint32_t h = 0; h < height; h++) { |
| if (TPGDON) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| LTP = LTP ^ pArithDecoder->DECODE(&gbContext[0x9b25]); |
| } |
| if (LTP) { |
| GBREG->copyLine(h, h - 1); |
| } else { |
| if (h > 1) { |
| uint8_t* pLine1 = pLine - nStride2; |
| uint8_t* pLine2 = 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--) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| int 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; |
| uint8_t cVal1 = 0; |
| for (int32_t k = 0; k < nBitsLeft; k++) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| int bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| cVal1 |= bVal << (7 - k); |
| CONTEXT = |
| (((CONTEXT & 0x7bf7) << 1) | bVal | |
| ((line1 >> (7 - k)) & 0x0800) | ((line2 >> (7 - k)) & 0x0010)); |
| } |
| pLine[nLineBytes] = cVal1; |
| } else { |
| uint8_t* pLine2 = pLine - nStride; |
| uint32_t line2 = (h & 1) ? (*pLine2++) : 0; |
| uint32_t CONTEXT = (line2 & 0x07f0); |
| for (int32_t cc = 0; cc < nLineBytes; cc++) { |
| if (h & 1) { |
| line2 = (line2 << 8) | (*pLine2++); |
| } |
| uint8_t cVal = 0; |
| for (int32_t k = 7; k >= 0; k--) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| int bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| cVal |= bVal << k; |
| CONTEXT = |
| (((CONTEXT & 0x7bf7) << 1) | bVal | ((line2 >> k) & 0x0010)); |
| } |
| pLine[cc] = cVal; |
| } |
| line2 <<= 8; |
| uint8_t cVal1 = 0; |
| for (int32_t k = 0; k < nBitsLeft; k++) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| int bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| cVal1 |= bVal << (7 - k); |
| CONTEXT = (((CONTEXT & 0x7bf7) << 1) | bVal | |
| (((line2 >> (7 - k))) & 0x0010)); |
| } |
| pLine[nLineBytes] = cVal1; |
| } |
| } |
| pLine += nStride; |
| } |
| return GBREG.release(); |
| } |
| |
| CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template0_unopt( |
| CJBig2_ArithDecoder* pArithDecoder, |
| JBig2ArithCtx* gbContext) { |
| int LTP = 0; |
| auto GBREG = pdfium::MakeUnique<CJBig2_Image>(GBW, GBH); |
| GBREG->fill(0); |
| for (uint32_t h = 0; h < GBH; h++) { |
| if (TPGDON) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| LTP = LTP ^ pArithDecoder->DECODE(&gbContext[0x9b25]); |
| } |
| if (LTP) { |
| GBREG->copyLine(h, h - 1); |
| } else { |
| uint32_t line1 = GBREG->getPixel(1, h - 2); |
| line1 |= GBREG->getPixel(0, h - 2) << 1; |
| uint32_t line2 = GBREG->getPixel(2, h - 1); |
| line2 |= GBREG->getPixel(1, h - 1) << 1; |
| line2 |= GBREG->getPixel(0, h - 1) << 2; |
| uint32_t line3 = 0; |
| for (uint32_t w = 0; w < GBW; w++) { |
| int bVal; |
| if (USESKIP && SKIP->getPixel(w, h)) { |
| bVal = 0; |
| } else { |
| uint32_t 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; |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| 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) { |
| auto GBREG = pdfium::MakeUnique<CJBig2_Image>(GBW, GBH); |
| if (!GBREG->m_pData) |
| return nullptr; |
| |
| int LTP = 0; |
| uint8_t* pLine = GBREG->m_pData; |
| int32_t nStride = GBREG->stride(); |
| int32_t nStride2 = nStride << 1; |
| int32_t nLineBytes = ((GBW + 7) >> 3) - 1; |
| int32_t nBitsLeft = GBW - (nLineBytes << 3); |
| for (uint32_t h = 0; h < GBH; h++) { |
| if (TPGDON) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| LTP = LTP ^ pArithDecoder->DECODE(&gbContext[0x0795]); |
| } |
| if (LTP) { |
| GBREG->copyLine(h, h - 1); |
| } else { |
| if (h > 1) { |
| uint8_t* pLine1 = pLine - nStride2; |
| uint8_t* pLine2 = 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--) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| int 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; |
| uint8_t cVal1 = 0; |
| for (int32_t k = 0; k < nBitsLeft; k++) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| int bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| cVal1 |= bVal << (7 - k); |
| CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal | |
| ((line1 >> (7 - k)) & 0x0200) | |
| ((line2 >> (8 - k)) & 0x0008); |
| } |
| pLine[nLineBytes] = cVal1; |
| } else { |
| uint8_t* pLine2 = pLine - nStride; |
| uint32_t line2 = (h & 1) ? (*pLine2++) : 0; |
| uint32_t CONTEXT = (line2 >> 1) & 0x01f8; |
| for (int32_t cc = 0; cc < nLineBytes; cc++) { |
| if (h & 1) { |
| line2 = (line2 << 8) | (*pLine2++); |
| } |
| uint8_t cVal = 0; |
| for (int32_t k = 7; k >= 0; k--) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| int bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| cVal |= bVal << k; |
| CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal | |
| ((line2 >> (k + 1)) & 0x0008); |
| } |
| pLine[cc] = cVal; |
| } |
| line2 <<= 8; |
| uint8_t cVal1 = 0; |
| for (int32_t k = 0; k < nBitsLeft; k++) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| int bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| cVal1 |= bVal << (7 - k); |
| CONTEXT = |
| ((CONTEXT & 0x0efb) << 1) | bVal | ((line2 >> (8 - k)) & 0x0008); |
| } |
| pLine[nLineBytes] = cVal1; |
| } |
| } |
| pLine += nStride; |
| } |
| return GBREG.release(); |
| } |
| |
| CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template1_unopt( |
| CJBig2_ArithDecoder* pArithDecoder, |
| JBig2ArithCtx* gbContext) { |
| int LTP = 0; |
| auto GBREG = pdfium::MakeUnique<CJBig2_Image>(GBW, GBH); |
| GBREG->fill(0); |
| for (uint32_t h = 0; h < GBH; h++) { |
| if (TPGDON) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| LTP = LTP ^ pArithDecoder->DECODE(&gbContext[0x0795]); |
| } |
| if (LTP) { |
| GBREG->copyLine(h, h - 1); |
| } else { |
| uint32_t line1 = GBREG->getPixel(2, h - 2); |
| line1 |= GBREG->getPixel(1, h - 2) << 1; |
| line1 |= GBREG->getPixel(0, h - 2) << 2; |
| uint32_t line2 = GBREG->getPixel(2, h - 1); |
| line2 |= GBREG->getPixel(1, h - 1) << 1; |
| line2 |= GBREG->getPixel(0, h - 1) << 2; |
| uint32_t line3 = 0; |
| for (uint32_t w = 0; w < GBW; w++) { |
| int bVal; |
| if (USESKIP && SKIP->getPixel(w, h)) { |
| bVal = 0; |
| } else { |
| uint32_t CONTEXT = line3; |
| CONTEXT |= GBREG->getPixel(w + GBAT[0], h + GBAT[1]) << 3; |
| CONTEXT |= line2 << 4; |
| CONTEXT |= line1 << 9; |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| 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) { |
| auto GBREG = pdfium::MakeUnique<CJBig2_Image>(GBW, GBH); |
| if (!GBREG->m_pData) |
| return nullptr; |
| |
| int LTP = 0; |
| uint8_t* pLine = GBREG->m_pData; |
| int32_t nStride = GBREG->stride(); |
| int32_t nStride2 = nStride << 1; |
| int32_t nLineBytes = ((GBW + 7) >> 3) - 1; |
| int32_t nBitsLeft = GBW - (nLineBytes << 3); |
| for (uint32_t h = 0; h < GBH; h++) { |
| if (TPGDON) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| LTP = LTP ^ pArithDecoder->DECODE(&gbContext[0x00e5]); |
| } |
| if (LTP) { |
| GBREG->copyLine(h, h - 1); |
| } else { |
| if (h > 1) { |
| uint8_t* pLine1 = pLine - nStride2; |
| uint8_t* pLine2 = 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--) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| int 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; |
| uint8_t cVal1 = 0; |
| for (int32_t k = 0; k < nBitsLeft; k++) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| int bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| cVal1 |= bVal << (7 - k); |
| CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | |
| ((line1 >> (7 - k)) & 0x0080) | |
| ((line2 >> (10 - k)) & 0x0004); |
| } |
| pLine[nLineBytes] = cVal1; |
| } else { |
| uint8_t* pLine2 = pLine - nStride; |
| uint32_t line2 = (h & 1) ? (*pLine2++) : 0; |
| uint32_t CONTEXT = (line2 >> 3) & 0x007c; |
| for (int32_t cc = 0; cc < nLineBytes; cc++) { |
| if (h & 1) { |
| line2 = (line2 << 8) | (*pLine2++); |
| } |
| uint8_t cVal = 0; |
| for (int32_t k = 7; k >= 0; k--) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| int bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| cVal |= bVal << k; |
| CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | |
| ((line2 >> (k + 3)) & 0x0004); |
| } |
| pLine[cc] = cVal; |
| } |
| line2 <<= 8; |
| uint8_t cVal1 = 0; |
| for (int32_t k = 0; k < nBitsLeft; k++) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| int bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| cVal1 |= bVal << (7 - k); |
| CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | |
| (((line2 >> (10 - k))) & 0x0004); |
| } |
| pLine[nLineBytes] = cVal1; |
| } |
| } |
| pLine += nStride; |
| } |
| return GBREG.release(); |
| } |
| |
| CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template2_unopt( |
| CJBig2_ArithDecoder* pArithDecoder, |
| JBig2ArithCtx* gbContext) { |
| int LTP = 0; |
| auto GBREG = pdfium::MakeUnique<CJBig2_Image>(GBW, GBH); |
| GBREG->fill(0); |
| for (uint32_t h = 0; h < GBH; h++) { |
| if (TPGDON) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| LTP = LTP ^ pArithDecoder->DECODE(&gbContext[0x00e5]); |
| } |
| if (LTP) { |
| GBREG->copyLine(h, h - 1); |
| } else { |
| uint32_t line1 = GBREG->getPixel(1, h - 2); |
| line1 |= GBREG->getPixel(0, h - 2) << 1; |
| uint32_t line2 = GBREG->getPixel(1, h - 1); |
| line2 |= GBREG->getPixel(0, h - 1) << 1; |
| uint32_t line3 = 0; |
| for (uint32_t w = 0; w < GBW; w++) { |
| int bVal; |
| if (USESKIP && SKIP->getPixel(w, h)) { |
| bVal = 0; |
| } else { |
| uint32_t CONTEXT = line3; |
| CONTEXT |= GBREG->getPixel(w + GBAT[0], h + GBAT[1]) << 2; |
| CONTEXT |= line2 << 3; |
| CONTEXT |= line1 << 7; |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| 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) { |
| auto GBREG = pdfium::MakeUnique<CJBig2_Image>(GBW, GBH); |
| if (!GBREG->m_pData) |
| return nullptr; |
| |
| int LTP = 0; |
| uint8_t* pLine = GBREG->m_pData; |
| int32_t nStride = GBREG->stride(); |
| int32_t nLineBytes = ((GBW + 7) >> 3) - 1; |
| int32_t nBitsLeft = GBW - (nLineBytes << 3); |
| |
| for (uint32_t h = 0; h < GBH; h++) { |
| if (TPGDON) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| LTP = LTP ^ pArithDecoder->DECODE(&gbContext[0x0195]); |
| } |
| |
| if (LTP) { |
| GBREG->copyLine(h, h - 1); |
| } else { |
| if (h > 0) { |
| uint8_t* pLine1 = 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--) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| int bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| cVal |= bVal << k; |
| CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal | |
| ((line1 >> (k + 1)) & 0x0010); |
| } |
| pLine[cc] = cVal; |
| } |
| line1 <<= 8; |
| uint8_t cVal1 = 0; |
| for (int32_t k = 0; k < nBitsLeft; k++) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| int bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| cVal1 |= bVal << (7 - k); |
| CONTEXT = |
| ((CONTEXT & 0x01f7) << 1) | bVal | ((line1 >> (8 - k)) & 0x0010); |
| } |
| 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--) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| int 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++) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| int 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) { |
| int LTP = 0; |
| auto GBREG = pdfium::MakeUnique<CJBig2_Image>(GBW, GBH); |
| GBREG->fill(0); |
| for (uint32_t h = 0; h < GBH; h++) { |
| if (TPGDON) { |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| 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++) { |
| int 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; |
| if (pArithDecoder->IsComplete()) |
| return nullptr; |
| |
| 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; |
| 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 = 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.Get(), m_gbContext, pPause); |
| } else { |
| m_ProssiveStatus = decode_Arith_Template0_unopt( |
| pImage, m_pArithDecoder.Get(), m_gbContext, pPause); |
| } |
| } else if (GBTEMPLATE == 1) { |
| if (UseTemplate1Opt3()) { |
| m_ProssiveStatus = decode_Arith_Template1_opt3( |
| pImage, m_pArithDecoder.Get(), m_gbContext, pPause); |
| } else { |
| m_ProssiveStatus = decode_Arith_Template1_unopt( |
| pImage, m_pArithDecoder.Get(), m_gbContext, pPause); |
| } |
| } else if (GBTEMPLATE == 2) { |
| if (UseTemplate23Opt3()) { |
| m_ProssiveStatus = decode_Arith_Template2_opt3( |
| pImage, m_pArithDecoder.Get(), m_gbContext, pPause); |
| } else { |
| m_ProssiveStatus = decode_Arith_Template2_unopt( |
| pImage, m_pArithDecoder.Get(), m_gbContext, pPause); |
| } |
| } else { |
| if (UseTemplate23Opt3()) { |
| m_ProssiveStatus = decode_Arith_Template3_opt3( |
| pImage, m_pArithDecoder.Get(), m_gbContext, pPause); |
| } else { |
| m_ProssiveStatus = decode_Arith_Template3_unopt( |
| pImage, m_pArithDecoder.Get(), m_gbContext, pPause); |
| } |
| } |
| m_ReplaceRect.left = 0; |
| m_ReplaceRect.right = pImage->width(); |
| 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) { |
| 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)->stride()); |
| pStream->setBitPos(bitpos); |
| for (i = 0; (uint32_t)i < (*pImage)->stride() * 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->stride(); |
| 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) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| 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--) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| int 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++) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| int 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--) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| int 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++) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| int 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) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| 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++) { |
| int 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; |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| 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->stride(); |
| 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) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| 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--) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| int 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++) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| int 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--) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| int 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++) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| int 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) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| 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++) { |
| int 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; |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| 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->stride(); |
| 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) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| 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--) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| int 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++) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| int 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--) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| int 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++) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| int 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) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| 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++) { |
| int 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; |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| 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->stride(); |
| int32_t nLineBytes = ((GBW + 7) >> 3) - 1; |
| int32_t nBitsLeft = GBW - (nLineBytes << 3); |
| for (; m_loopIndex < GBH; m_loopIndex++) { |
| if (TPGDON) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| 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--) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| int 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++) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| int 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--) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| int 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++) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| int 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) { |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| 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++) { |
| int 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; |
| if (pArithDecoder->IsComplete()) |
| return FXCODEC_STATUS_ERROR; |
| |
| 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; |
| } |