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Unified Diff: core/src/fxcodec/jbig2/JBig2_GrdProc.cpp

Issue 1359233002: Split up JBig2_GeneralDecoder.cpp. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: rebase Created 5 years, 3 months ago
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Index: core/src/fxcodec/jbig2/JBig2_GrdProc.cpp
diff --git a/core/src/fxcodec/jbig2/JBig2_GrdProc.cpp b/core/src/fxcodec/jbig2/JBig2_GrdProc.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..5eb0570e72a4662803c764f9ba2fbb9dc444e956
--- /dev/null
+++ b/core/src/fxcodec/jbig2/JBig2_GrdProc.cpp
@@ -0,0 +1,1257 @@
+// 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 "JBig2_GrdProc.h"
+
+#include "../../../../third_party/base/nonstd_unique_ptr.h"
+#include "JBig2_ArithDecoder.h"
+#include "JBig2_BitStream.h"
+#include "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;
+ nonstd::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;
+ nonstd::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;
+ nonstd::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;
+ nonstd::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;
+ nonstd::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;
+ nonstd::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;
+ nonstd::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;
+ nonstd::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;
+}
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