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Unified Diff: core/src/fxcodec/jbig2/JBig2_GrrdProc.cpp

Issue 1800523005: Move core/src/ up to core/. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: Created 4 years, 9 months ago
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Index: core/src/fxcodec/jbig2/JBig2_GrrdProc.cpp
diff --git a/core/src/fxcodec/jbig2/JBig2_GrrdProc.cpp b/core/src/fxcodec/jbig2/JBig2_GrrdProc.cpp
deleted file mode 100644
index eaa9a76608f340a982a71089310312e45bb759f2..0000000000000000000000000000000000000000
--- a/core/src/fxcodec/jbig2/JBig2_GrrdProc.cpp
+++ /dev/null
@@ -1,516 +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_GrrdProc.h"
-
-#include <memory>
-
-#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_Image* CJBig2_GRRDProc::decode(CJBig2_ArithDecoder* pArithDecoder,
- JBig2ArithCtx* grContext) {
- if (GRW == 0 || GRH == 0)
- return new CJBig2_Image(GRW, GRH);
-
- if (GRTEMPLATE == 0) {
- if ((GRAT[0] == -1) && (GRAT[1] == -1) && (GRAT[2] == -1) &&
- (GRAT[3] == -1) && (GRREFERENCEDX == 0) &&
- (GRW == (FX_DWORD)GRREFERENCE->m_nWidth)) {
- return decode_Template0_opt(pArithDecoder, grContext);
- }
- return decode_Template0_unopt(pArithDecoder, grContext);
- }
-
- if ((GRREFERENCEDX == 0) && (GRW == (FX_DWORD)GRREFERENCE->m_nWidth))
- return decode_Template1_opt(pArithDecoder, grContext);
- return decode_Template1_unopt(pArithDecoder, grContext);
-}
-
-CJBig2_Image* CJBig2_GRRDProc::decode_Template0_unopt(
- CJBig2_ArithDecoder* pArithDecoder,
- JBig2ArithCtx* grContext) {
- FX_BOOL LTP, SLTP, bVal;
- FX_DWORD CONTEXT;
- FX_DWORD line1, line2, line3, line4, line5;
- LTP = 0;
- std::unique_ptr<CJBig2_Image> GRREG(new CJBig2_Image(GRW, GRH));
- GRREG->fill(0);
- for (FX_DWORD h = 0; h < GRH; h++) {
- if (TPGRON) {
- SLTP = pArithDecoder->DECODE(&grContext[0x0010]);
- LTP = LTP ^ SLTP;
- }
- if (LTP == 0) {
- line1 = GRREG->getPixel(1, h - 1);
- line1 |= GRREG->getPixel(0, h - 1) << 1;
- line2 = 0;
- line3 = GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY - 1);
- line3 |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY - 1)
- << 1;
- line4 = GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY);
- line4 |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY) << 1;
- line4 |= GRREFERENCE->getPixel(-GRREFERENCEDX - 1, h - GRREFERENCEDY)
- << 2;
- line5 = GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY + 1);
- line5 |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY + 1)
- << 1;
- line5 |= GRREFERENCE->getPixel(-GRREFERENCEDX - 1, h - GRREFERENCEDY + 1)
- << 2;
- for (FX_DWORD w = 0; w < GRW; w++) {
- CONTEXT = line5;
- CONTEXT |= line4 << 3;
- CONTEXT |= line3 << 6;
- CONTEXT |= GRREFERENCE->getPixel(w - GRREFERENCEDX + GRAT[2],
- h - GRREFERENCEDY + GRAT[3])
- << 8;
- CONTEXT |= line2 << 9;
- CONTEXT |= line1 << 10;
- CONTEXT |= GRREG->getPixel(w + GRAT[0], h + GRAT[1]) << 12;
- bVal = pArithDecoder->DECODE(&grContext[CONTEXT]);
- GRREG->setPixel(w, h, bVal);
- line1 = ((line1 << 1) | GRREG->getPixel(w + 2, h - 1)) & 0x03;
- line2 = ((line2 << 1) | bVal) & 0x01;
- line3 = ((line3 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 2,
- h - GRREFERENCEDY - 1)) &
- 0x03;
- line4 =
- ((line4 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 2, h - GRREFERENCEDY)) &
- 0x07;
- line5 = ((line5 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 2,
- h - GRREFERENCEDY + 1)) &
- 0x07;
- }
- } else {
- line1 = GRREG->getPixel(1, h - 1);
- line1 |= GRREG->getPixel(0, h - 1) << 1;
- line2 = 0;
- line3 = GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY - 1);
- line3 |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY - 1)
- << 1;
- line4 = GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY);
- line4 |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY) << 1;
- line4 |= GRREFERENCE->getPixel(-GRREFERENCEDX - 1, h - GRREFERENCEDY)
- << 2;
- line5 = GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY + 1);
- line5 |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY + 1)
- << 1;
- line5 |= GRREFERENCE->getPixel(-GRREFERENCEDX - 1, h - GRREFERENCEDY + 1)
- << 2;
- for (FX_DWORD w = 0; w < GRW; w++) {
- bVal = GRREFERENCE->getPixel(w, h);
- if (!(TPGRON && (bVal == GRREFERENCE->getPixel(w - 1, h - 1)) &&
- (bVal == GRREFERENCE->getPixel(w, h - 1)) &&
- (bVal == GRREFERENCE->getPixel(w + 1, h - 1)) &&
- (bVal == GRREFERENCE->getPixel(w - 1, h)) &&
- (bVal == GRREFERENCE->getPixel(w + 1, h)) &&
- (bVal == GRREFERENCE->getPixel(w - 1, h + 1)) &&
- (bVal == GRREFERENCE->getPixel(w, h + 1)) &&
- (bVal == GRREFERENCE->getPixel(w + 1, h + 1)))) {
- CONTEXT = line5;
- CONTEXT |= line4 << 3;
- CONTEXT |= line3 << 6;
- CONTEXT |= GRREFERENCE->getPixel(w - GRREFERENCEDX + GRAT[2],
- h - GRREFERENCEDY + GRAT[3])
- << 8;
- CONTEXT |= line2 << 9;
- CONTEXT |= line1 << 10;
- CONTEXT |= GRREG->getPixel(w + GRAT[0], h + GRAT[1]) << 12;
- bVal = pArithDecoder->DECODE(&grContext[CONTEXT]);
- }
- GRREG->setPixel(w, h, bVal);
- line1 = ((line1 << 1) | GRREG->getPixel(w + 2, h - 1)) & 0x03;
- line2 = ((line2 << 1) | bVal) & 0x01;
- line3 = ((line3 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 2,
- h - GRREFERENCEDY - 1)) &
- 0x03;
- line4 =
- ((line4 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 2, h - GRREFERENCEDY)) &
- 0x07;
- line5 = ((line5 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 2,
- h - GRREFERENCEDY + 1)) &
- 0x07;
- }
- }
- }
- return GRREG.release();
-}
-
-CJBig2_Image* CJBig2_GRRDProc::decode_Template0_opt(
- CJBig2_ArithDecoder* pArithDecoder,
- JBig2ArithCtx* grContext) {
- if (!GRREFERENCE->m_pData)
- return nullptr;
-
- FX_BOOL LTP, SLTP, bVal;
- FX_DWORD CONTEXT;
- FX_DWORD line1, line1_r, line2_r, line3_r;
- uint8_t* pLine, *pLineR, cVal;
- intptr_t nStride, nStrideR, nOffset;
- int32_t k, nBits;
- int32_t GRWR, GRHR;
- int32_t GRW, GRH;
- GRW = (int32_t)CJBig2_GRRDProc::GRW;
- GRH = (int32_t)CJBig2_GRRDProc::GRH;
- LTP = 0;
- std::unique_ptr<CJBig2_Image> GRREG(new CJBig2_Image(GRW, GRH));
- if (!GRREG->m_pData)
- return nullptr;
-
- pLine = GRREG->m_pData;
- pLineR = GRREFERENCE->m_pData;
- nStride = GRREG->m_nStride;
- nStrideR = GRREFERENCE->m_nStride;
- GRWR = (int32_t)GRREFERENCE->m_nWidth;
- GRHR = (int32_t)GRREFERENCE->m_nHeight;
- if (GRREFERENCEDY < -GRHR + 1 || GRREFERENCEDY > GRHR - 1) {
- GRREFERENCEDY = 0;
- }
- nOffset = -GRREFERENCEDY * nStrideR;
- for (int32_t h = 0; h < GRH; h++) {
- if (TPGRON) {
- SLTP = pArithDecoder->DECODE(&grContext[0x0010]);
- LTP = LTP ^ SLTP;
- }
- line1 = (h > 0) ? pLine[-nStride] << 4 : 0;
- int32_t reference_h = h - GRREFERENCEDY;
- FX_BOOL line1_r_ok = (reference_h > 0 && reference_h < GRHR + 1);
- FX_BOOL line2_r_ok = (reference_h > -1 && reference_h < GRHR);
- FX_BOOL line3_r_ok = (reference_h > -2 && reference_h < GRHR - 1);
- line1_r = line1_r_ok ? pLineR[nOffset - nStrideR] : 0;
- line2_r = line2_r_ok ? pLineR[nOffset] : 0;
- line3_r = line3_r_ok ? pLineR[nOffset + nStrideR] : 0;
- if (LTP == 0) {
- CONTEXT = (line1 & 0x1c00) | (line1_r & 0x01c0) |
- ((line2_r >> 3) & 0x0038) | ((line3_r >> 6) & 0x0007);
- for (int32_t w = 0; w < GRW; w += 8) {
- nBits = GRW - w > 8 ? 8 : GRW - w;
- if (h > 0)
- line1 = (line1 << 8) |
- (w + 8 < GRW ? pLine[-nStride + (w >> 3) + 1] << 4 : 0);
- if (h > GRHR + GRREFERENCEDY + 1) {
- line1_r = 0;
- line2_r = 0;
- line3_r = 0;
- } else {
- if (line1_r_ok)
- line1_r =
- (line1_r << 8) |
- (w + 8 < GRWR ? pLineR[nOffset - nStrideR + (w >> 3) + 1] : 0);
- if (line2_r_ok)
- line2_r = (line2_r << 8) |
- (w + 8 < GRWR ? pLineR[nOffset + (w >> 3) + 1] : 0);
- if (line3_r_ok) {
- line3_r =
- (line3_r << 8) |
- (w + 8 < GRWR ? pLineR[nOffset + nStrideR + (w >> 3) + 1] : 0);
- } else {
- line3_r = 0;
- }
- }
- cVal = 0;
- for (k = 0; k < nBits; k++) {
- bVal = pArithDecoder->DECODE(&grContext[CONTEXT]);
- cVal |= bVal << (7 - k);
- CONTEXT = ((CONTEXT & 0x0cdb) << 1) | (bVal << 9) |
- ((line1 >> (7 - k)) & 0x0400) |
- ((line1_r >> (7 - k)) & 0x0040) |
- ((line2_r >> (10 - k)) & 0x0008) |
- ((line3_r >> (13 - k)) & 0x0001);
- }
- pLine[w >> 3] = cVal;
- }
- } else {
- CONTEXT = (line1 & 0x1c00) | (line1_r & 0x01c0) |
- ((line2_r >> 3) & 0x0038) | ((line3_r >> 6) & 0x0007);
- for (int32_t w = 0; w < GRW; w += 8) {
- nBits = GRW - w > 8 ? 8 : GRW - w;
- if (h > 0)
- line1 = (line1 << 8) |
- (w + 8 < GRW ? pLine[-nStride + (w >> 3) + 1] << 4 : 0);
- if (line1_r_ok)
- line1_r =
- (line1_r << 8) |
- (w + 8 < GRWR ? pLineR[nOffset - nStrideR + (w >> 3) + 1] : 0);
- if (line2_r_ok)
- line2_r = (line2_r << 8) |
- (w + 8 < GRWR ? pLineR[nOffset + (w >> 3) + 1] : 0);
- if (line3_r_ok) {
- line3_r =
- (line3_r << 8) |
- (w + 8 < GRWR ? pLineR[nOffset + nStrideR + (w >> 3) + 1] : 0);
- } else {
- line3_r = 0;
- }
- cVal = 0;
- for (k = 0; k < nBits; k++) {
- bVal = GRREFERENCE->getPixel(w + k, h);
- if (!(TPGRON && (bVal == GRREFERENCE->getPixel(w + k - 1, h - 1)) &&
- (bVal == GRREFERENCE->getPixel(w + k, h - 1)) &&
- (bVal == GRREFERENCE->getPixel(w + k + 1, h - 1)) &&
- (bVal == GRREFERENCE->getPixel(w + k - 1, h)) &&
- (bVal == GRREFERENCE->getPixel(w + k + 1, h)) &&
- (bVal == GRREFERENCE->getPixel(w + k - 1, h + 1)) &&
- (bVal == GRREFERENCE->getPixel(w + k, h + 1)) &&
- (bVal == GRREFERENCE->getPixel(w + k + 1, h + 1)))) {
- bVal = pArithDecoder->DECODE(&grContext[CONTEXT]);
- }
- cVal |= bVal << (7 - k);
- CONTEXT = ((CONTEXT & 0x0cdb) << 1) | (bVal << 9) |
- ((line1 >> (7 - k)) & 0x0400) |
- ((line1_r >> (7 - k)) & 0x0040) |
- ((line2_r >> (10 - k)) & 0x0008) |
- ((line3_r >> (13 - k)) & 0x0001);
- }
- pLine[w >> 3] = cVal;
- }
- }
- pLine += nStride;
- if (h < GRHR + GRREFERENCEDY) {
- pLineR += nStrideR;
- }
- }
- return GRREG.release();
-}
-
-CJBig2_Image* CJBig2_GRRDProc::decode_Template1_unopt(
- CJBig2_ArithDecoder* pArithDecoder,
- JBig2ArithCtx* grContext) {
- FX_BOOL LTP, SLTP, bVal;
- FX_DWORD CONTEXT;
- FX_DWORD line1, line2, line3, line4, line5;
- LTP = 0;
- std::unique_ptr<CJBig2_Image> GRREG(new CJBig2_Image(GRW, GRH));
- GRREG->fill(0);
- for (FX_DWORD h = 0; h < GRH; h++) {
- if (TPGRON) {
- SLTP = pArithDecoder->DECODE(&grContext[0x0008]);
- LTP = LTP ^ SLTP;
- }
- if (LTP == 0) {
- line1 = GRREG->getPixel(1, h - 1);
- line1 |= GRREG->getPixel(0, h - 1) << 1;
- line1 |= GRREG->getPixel(-1, h - 1) << 2;
- line2 = 0;
- line3 = GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY - 1);
- line4 = GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY);
- line4 |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY) << 1;
- line4 |= GRREFERENCE->getPixel(-GRREFERENCEDX - 1, h - GRREFERENCEDY)
- << 2;
- line5 = GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY + 1);
- line5 |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY + 1)
- << 1;
- for (FX_DWORD w = 0; w < GRW; w++) {
- CONTEXT = line5;
- CONTEXT |= line4 << 2;
- CONTEXT |= line3 << 5;
- CONTEXT |= line2 << 6;
- CONTEXT |= line1 << 7;
- bVal = pArithDecoder->DECODE(&grContext[CONTEXT]);
- GRREG->setPixel(w, h, bVal);
- line1 = ((line1 << 1) | GRREG->getPixel(w + 2, h - 1)) & 0x07;
- line2 = ((line2 << 1) | bVal) & 0x01;
- line3 = ((line3 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 1,
- h - GRREFERENCEDY - 1)) &
- 0x01;
- line4 =
- ((line4 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 2, h - GRREFERENCEDY)) &
- 0x07;
- line5 = ((line5 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 2,
- h - GRREFERENCEDY + 1)) &
- 0x03;
- }
- } else {
- line1 = GRREG->getPixel(1, h - 1);
- line1 |= GRREG->getPixel(0, h - 1) << 1;
- line1 |= GRREG->getPixel(-1, h - 1) << 2;
- line2 = 0;
- line3 = GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY - 1);
- line4 = GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY);
- line4 |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY) << 1;
- line4 |= GRREFERENCE->getPixel(-GRREFERENCEDX - 1, h - GRREFERENCEDY)
- << 2;
- line5 = GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY + 1);
- line5 |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY + 1)
- << 1;
- for (FX_DWORD w = 0; w < GRW; w++) {
- bVal = GRREFERENCE->getPixel(w, h);
- if (!(TPGRON && (bVal == GRREFERENCE->getPixel(w - 1, h - 1)) &&
- (bVal == GRREFERENCE->getPixel(w, h - 1)) &&
- (bVal == GRREFERENCE->getPixel(w + 1, h - 1)) &&
- (bVal == GRREFERENCE->getPixel(w - 1, h)) &&
- (bVal == GRREFERENCE->getPixel(w + 1, h)) &&
- (bVal == GRREFERENCE->getPixel(w - 1, h + 1)) &&
- (bVal == GRREFERENCE->getPixel(w, h + 1)) &&
- (bVal == GRREFERENCE->getPixel(w + 1, h + 1)))) {
- CONTEXT = line5;
- CONTEXT |= line4 << 2;
- CONTEXT |= line3 << 5;
- CONTEXT |= line2 << 6;
- CONTEXT |= line1 << 7;
- bVal = pArithDecoder->DECODE(&grContext[CONTEXT]);
- }
- GRREG->setPixel(w, h, bVal);
- line1 = ((line1 << 1) | GRREG->getPixel(w + 2, h - 1)) & 0x07;
- line2 = ((line2 << 1) | bVal) & 0x01;
- line3 = ((line3 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 1,
- h - GRREFERENCEDY - 1)) &
- 0x01;
- line4 =
- ((line4 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 2, h - GRREFERENCEDY)) &
- 0x07;
- line5 = ((line5 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 2,
- h - GRREFERENCEDY + 1)) &
- 0x03;
- }
- }
- }
- return GRREG.release();
-}
-
-CJBig2_Image* CJBig2_GRRDProc::decode_Template1_opt(
- CJBig2_ArithDecoder* pArithDecoder,
- JBig2ArithCtx* grContext) {
- if (!GRREFERENCE->m_pData)
- return nullptr;
-
- FX_BOOL LTP, SLTP, bVal;
- FX_DWORD CONTEXT;
- FX_DWORD line1, line1_r, line2_r, line3_r;
- uint8_t* pLine, *pLineR, cVal;
- intptr_t nStride, nStrideR, nOffset;
- int32_t k, nBits;
- int32_t GRWR, GRHR;
- int32_t GRW, GRH;
- GRW = (int32_t)CJBig2_GRRDProc::GRW;
- GRH = (int32_t)CJBig2_GRRDProc::GRH;
- LTP = 0;
- std::unique_ptr<CJBig2_Image> GRREG(new CJBig2_Image(GRW, GRH));
- if (!GRREG->m_pData)
- return nullptr;
-
- pLine = GRREG->m_pData;
- pLineR = GRREFERENCE->m_pData;
- nStride = GRREG->m_nStride;
- nStrideR = GRREFERENCE->m_nStride;
- GRWR = (int32_t)GRREFERENCE->m_nWidth;
- GRHR = (int32_t)GRREFERENCE->m_nHeight;
- if (GRREFERENCEDY < -GRHR + 1 || GRREFERENCEDY > GRHR - 1) {
- GRREFERENCEDY = 0;
- }
- nOffset = -GRREFERENCEDY * nStrideR;
- for (int32_t h = 0; h < GRH; h++) {
- if (TPGRON) {
- SLTP = pArithDecoder->DECODE(&grContext[0x0008]);
- LTP = LTP ^ SLTP;
- }
- line1 = (h > 0) ? pLine[-nStride] << 1 : 0;
- int32_t reference_h = h - GRREFERENCEDY;
- FX_BOOL line1_r_ok = (reference_h > 0 && reference_h < GRHR + 1);
- FX_BOOL line2_r_ok = (reference_h > -1 && reference_h < GRHR);
- FX_BOOL line3_r_ok = (reference_h > -2 && reference_h < GRHR - 1);
- line1_r = line1_r_ok ? pLineR[nOffset - nStrideR] : 0;
- line2_r = line2_r_ok ? pLineR[nOffset] : 0;
- line3_r = line3_r_ok ? pLineR[nOffset + nStrideR] : 0;
- if (LTP == 0) {
- CONTEXT = (line1 & 0x0380) | ((line1_r >> 2) & 0x0020) |
- ((line2_r >> 4) & 0x001c) | ((line3_r >> 6) & 0x0003);
- for (int32_t w = 0; w < GRW; w += 8) {
- nBits = GRW - w > 8 ? 8 : GRW - w;
- if (h > 0)
- line1 = (line1 << 8) |
- (w + 8 < GRW ? pLine[-nStride + (w >> 3) + 1] << 1 : 0);
- if (line1_r_ok)
- line1_r =
- (line1_r << 8) |
- (w + 8 < GRWR ? pLineR[nOffset - nStrideR + (w >> 3) + 1] : 0);
- if (line2_r_ok)
- line2_r = (line2_r << 8) |
- (w + 8 < GRWR ? pLineR[nOffset + (w >> 3) + 1] : 0);
- if (line3_r_ok) {
- line3_r =
- (line3_r << 8) |
- (w + 8 < GRWR ? pLineR[nOffset + nStrideR + (w >> 3) + 1] : 0);
- } else {
- line3_r = 0;
- }
- cVal = 0;
- for (k = 0; k < nBits; k++) {
- bVal = pArithDecoder->DECODE(&grContext[CONTEXT]);
- cVal |= bVal << (7 - k);
- CONTEXT = ((CONTEXT & 0x018d) << 1) | (bVal << 6) |
- ((line1 >> (7 - k)) & 0x0080) |
- ((line1_r >> (9 - k)) & 0x0020) |
- ((line2_r >> (11 - k)) & 0x0004) |
- ((line3_r >> (13 - k)) & 0x0001);
- }
- pLine[w >> 3] = cVal;
- }
- } else {
- CONTEXT = (line1 & 0x0380) | ((line1_r >> 2) & 0x0020) |
- ((line2_r >> 4) & 0x001c) | ((line3_r >> 6) & 0x0003);
- for (int32_t w = 0; w < GRW; w += 8) {
- nBits = GRW - w > 8 ? 8 : GRW - w;
- if (h > 0)
- line1 = (line1 << 8) |
- (w + 8 < GRW ? pLine[-nStride + (w >> 3) + 1] << 1 : 0);
- if (line1_r_ok)
- line1_r =
- (line1_r << 8) |
- (w + 8 < GRWR ? pLineR[nOffset - nStrideR + (w >> 3) + 1] : 0);
- if (line2_r_ok)
- line2_r = (line2_r << 8) |
- (w + 8 < GRWR ? pLineR[nOffset + (w >> 3) + 1] : 0);
- if (line3_r_ok) {
- line3_r =
- (line3_r << 8) |
- (w + 8 < GRWR ? pLineR[nOffset + nStrideR + (w >> 3) + 1] : 0);
- } else {
- line3_r = 0;
- }
- cVal = 0;
- for (k = 0; k < nBits; k++) {
- bVal = GRREFERENCE->getPixel(w + k, h);
- if (!(TPGRON && (bVal == GRREFERENCE->getPixel(w + k - 1, h - 1)) &&
- (bVal == GRREFERENCE->getPixel(w + k, h - 1)) &&
- (bVal == GRREFERENCE->getPixel(w + k + 1, h - 1)) &&
- (bVal == GRREFERENCE->getPixel(w + k - 1, h)) &&
- (bVal == GRREFERENCE->getPixel(w + k + 1, h)) &&
- (bVal == GRREFERENCE->getPixel(w + k - 1, h + 1)) &&
- (bVal == GRREFERENCE->getPixel(w + k, h + 1)) &&
- (bVal == GRREFERENCE->getPixel(w + k + 1, h + 1)))) {
- bVal = pArithDecoder->DECODE(&grContext[CONTEXT]);
- }
- cVal |= bVal << (7 - k);
- CONTEXT = ((CONTEXT & 0x018d) << 1) | (bVal << 6) |
- ((line1 >> (7 - k)) & 0x0080) |
- ((line1_r >> (9 - k)) & 0x0020) |
- ((line2_r >> (11 - k)) & 0x0004) |
- ((line3_r >> (13 - k)) & 0x0001);
- }
- pLine[w >> 3] = cVal;
- }
- }
- pLine += nStride;
- if (h < GRHR + GRREFERENCEDY) {
- pLineR += nStrideR;
- }
- }
- return GRREG.release();
-}
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