Move core/src/ up to core/.

This CL moves the core/src/ files up to core/ and fixes up the include guards,
includes and build files.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1800523005 .

1 files changed, 0 insertions, 516 deletions

diff --git a/core/src/fxcodec/jbig2/JBig2_GrrdProc.cpp b/core/src/fxcodec/jbig2/JBig2_GrrdProc.cpp
deleted file mode 100644
index eaa9a76608..0000000000
--- 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();
-}