Remove dead JBig2 code.

core/src/fxcodec/jbig2/JBig2_GeneralDecoder.cpp

 // Copyright 2014 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_GeneralDecoder.h"
 #include "JBig2_ArithDecoder.h"
 #include "JBig2_ArithIntDecoder.h"
 #include "JBig2_HuffmanDecoder.h"
@@ skipping 48 matching lines @@
       return decode_Arith_Template2_unopt(pArithDecoder, gbContext);
     }
   } else {
     if ((GBAT[0] == 2) && (GBAT[1] == (int8_t)-1)) {
       return decode_Arith_Template3_opt3(pArithDecoder, gbContext);
     } else {
       return decode_Arith_Template3_unopt(pArithDecoder, gbContext);
     }
   }
 }
-CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template0_opt(
-    CJBig2_ArithDecoder* pArithDecoder,
-    JBig2ArithCtx* gbContext) {
-  FX_BOOL LTP, SLTP, bVal;
-  FX_DWORD CONTEXT;
-  CJBig2_Image* GBREG;
-  FX_DWORD line1, line2, line3;
-  LTP = 0;
-  JBIG2_ALLOC(GBREG, 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(2, h - 2);
-      line1 |= GBREG->getPixel(1, h - 2) << 1;
-      line1 |= GBREG->getPixel(0, h - 2) << 2;
-      line2 = GBREG->getPixel(3, h - 1);
-      line2 |= GBREG->getPixel(2, h - 1) << 1;
-      line2 |= GBREG->getPixel(1, h - 1) << 2;
-      line2 |= GBREG->getPixel(0, h - 1) << 3;
-      line3 = 0;
-      for (FX_DWORD w = 0; w < GBW; w++) {
-        if (USESKIP && SKIP->getPixel(w, h)) {
-          bVal = 0;
-        } else {
-          CONTEXT = line3;
-          CONTEXT |= line2 << 4;
-          CONTEXT |= line1 << 11;
-          bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
-        }
-        if (bVal) {
-          GBREG->setPixel(w, h, bVal);
-        }
-        line1 = ((line1 << 1) | GBREG->getPixel(w + 3, h - 2)) & 0x1f;
-        line2 = ((line2 << 1) | GBREG->getPixel(w + 4, h - 1)) & 0x7f;
-        line3 = ((line3 << 1) | bVal) & 0x0f;
-      }
-    }
-  }
-  return GBREG;
-}
-CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template0_opt2(
-    CJBig2_ArithDecoder* pArithDecoder,
-    JBig2ArithCtx* gbContext) {
-  FX_BOOL LTP, SLTP, bVal;
-  FX_DWORD CONTEXT;
-  CJBig2_Image* GBREG;
-  FX_DWORD line1, line2;
-  uint8_t *pLine, cVal;
-  intptr_t nStride, nStride2;
-  int32_t nBits, k;
-  LTP = 0;
-  JBIG2_ALLOC(GBREG, CJBig2_Image(GBW, GBH));
-  if (GBREG->m_pData == NULL) {
-    delete GBREG;
-    m_pModule->JBig2_Error(
-        "Generic region decoding procedure: Create Image Failed with width = "
-        "%d, height = %d\n",
-        GBW, GBH);
-    return NULL;
-  }
-  pLine = GBREG->m_pData;
-  nStride = GBREG->m_nStride;
-  nStride2 = nStride << 1;
-  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 = (h > 1) ? pLine[-nStride2] << 6 : 0;
-      line2 = (h > 0) ? pLine[-nStride] : 0;
-      CONTEXT = (line1 & 0xf800) | (line2 & 0x07f0);
-      for (FX_DWORD w = 0; w < GBW; w += 8) {
-        if (w + 8 < GBW) {
-          nBits = 8;
-          if (h > 1) {
-            line1 = (line1 << 8) | (pLine[-nStride2 + (w >> 3) + 1] << 6);
-          }
-          if (h > 0) {
-            line2 = (line2 << 8) | (pLine[-nStride + (w >> 3) + 1]);
-          }
-        } else {
-          nBits = GBW - w;
-          if (h > 1) {
-            line1 <<= 8;
-          }
-          if (h > 0) {
-            line2 <<= 8;
-          }
-        }
-        cVal = 0;
-        for (k = 0; k < nBits; k++) {
-          if (USESKIP && SKIP->getPixel(w, h)) {
-            bVal = 0;
-          } else {
-            bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
-          }
-          cVal |= bVal << (7 - k);
-          CONTEXT = ((CONTEXT & 0x7bf7) << 1) | bVal |
-                    ((line1 >> (7 - k)) & 0x0800) |
-                    ((line2 >> (7 - k)) & 0x0010);
-        }
-        pLine[w >> 3] = cVal;
-      }
-    }
-    pLine += nStride;
-  }
-  return GBREG;
-}
 CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template0_opt3(
     CJBig2_ArithDecoder* pArithDecoder,
     JBig2ArithCtx* gbContext) {
   FX_BOOL LTP, SLTP, bVal;
   FX_DWORD CONTEXT;
   CJBig2_Image* GBREG;
   FX_DWORD line1, line2;
   uint8_t *pLine, *pLine1, *pLine2, cVal;
   int32_t nStride, nStride2, k;
   int32_t nLineBytes, nBitsLeft, cc;
@@ skipping 123 matching lines @@
           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;
 }
-CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template1_opt(
-    CJBig2_ArithDecoder* pArithDecoder,
-    JBig2ArithCtx* gbContext) {
-  FX_BOOL LTP, SLTP, bVal;
-  FX_DWORD CONTEXT;
-  CJBig2_Image* GBREG;
-  FX_DWORD line1, line2, line3;
-  LTP = 0;
-  JBIG2_ALLOC(GBREG, 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(3, h - 1);
-      line2 |= GBREG->getPixel(2, h - 1) << 1;
-      line2 |= GBREG->getPixel(1, h - 1) << 2;
-      line2 |= GBREG->getPixel(0, h - 1) << 3;
-      line3 = 0;
-      for (FX_DWORD w = 0; w < GBW; w++) {
-        if (USESKIP && SKIP->getPixel(w, h)) {
-          bVal = 0;
-        } else {
-          CONTEXT = line3;
-          CONTEXT |= line2 << 3;
-          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 + 4, h - 1)) & 0x3f;
-        line3 = ((line3 << 1) | bVal) & 0x07;
-      }
-    }
-  }
-  return GBREG;
-}
-CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template1_opt2(
-    CJBig2_ArithDecoder* pArithDecoder,
-    JBig2ArithCtx* gbContext) {
-  FX_BOOL LTP, SLTP, bVal;
-  FX_DWORD CONTEXT;
-  CJBig2_Image* GBREG;
-  FX_DWORD line1, line2;
-  uint8_t *pLine, cVal;
-  intptr_t nStride, nStride2;
-  int32_t nBits, k;
-  LTP = 0;
-  JBIG2_ALLOC(GBREG, CJBig2_Image(GBW, GBH));
-  if (GBREG->m_pData == NULL) {
-    delete GBREG;
-    m_pModule->JBig2_Error(
-        "Generic region decoding procedure: Create Image Failed with width = "
-        "%d, height = %d\n",
-        GBW, GBH);
-    return NULL;
-  }
-  pLine = GBREG->m_pData;
-  nStride = GBREG->m_nStride;
-  nStride2 = nStride << 1;
-  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 = (h > 1) ? pLine[-nStride2] << 4 : 0;
-      line2 = (h > 0) ? pLine[-nStride] : 0;
-      CONTEXT = (line1 & 0x1e00) | ((line2 >> 1) & 0x01f8);
-      for (FX_DWORD w = 0; w < GBW; w += 8) {
-        if (w + 8 < GBW) {
-          nBits = 8;
-          if (h > 1) {
-            line1 = (line1 << 8) | (pLine[-nStride2 + (w >> 3) + 1] << 4);
-          }
-          if (h > 0) {
-            line2 = (line2 << 8) | (pLine[-nStride + (w >> 3) + 1]);
-          }
-        } else {
-          nBits = GBW - w;
-          if (h > 1) {
-            line1 <<= 8;
-          }
-          if (h > 0) {
-            line2 <<= 8;
-          }
-        }
-        cVal = 0;
-        for (k = 0; k < nBits; k++) {
-          if (USESKIP && SKIP->getPixel(w, h)) {
-            bVal = 0;
-          } else {
-            bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
-          }
-          cVal |= bVal << (7 - k);
-          CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal |
-                    ((line1 >> (7 - k)) & 0x0200) |
-                    ((line2 >> (8 - k)) & 0x0008);
-        }
-        pLine[w >> 3] = cVal;
-      }
-    }
-    pLine += nStride;
-  }
-  return GBREG;
-}
 CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template1_opt3(
     CJBig2_ArithDecoder* pArithDecoder,
     JBig2ArithCtx* gbContext) {
   FX_BOOL LTP, SLTP, bVal;
   FX_DWORD CONTEXT;
   CJBig2_Image* GBREG;
   FX_DWORD line1, line2;
   uint8_t *pLine, *pLine1, *pLine2, cVal;
   int32_t nStride, nStride2, k;
   int32_t nLineBytes, nBitsLeft, cc;
@@ skipping 120 matching lines @@
           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;
 }
-CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template2_opt(
-    CJBig2_ArithDecoder* pArithDecoder,
-    JBig2ArithCtx* gbContext) {
-  FX_BOOL LTP, SLTP, bVal;
-  FX_DWORD CONTEXT;
-  CJBig2_Image* GBREG;
-  FX_DWORD line1, line2, line3;
-  LTP = 0;
-  JBIG2_ALLOC(GBREG, 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(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 |= line2 << 2;
-          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 + 3, h - 1)) & 0x1f;
-        line3 = ((line3 << 1) | bVal) & 0x03;
-      }
-    }
-  }
-  return GBREG;
-}
-CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template2_opt2(
-    CJBig2_ArithDecoder* pArithDecoder,
-    JBig2ArithCtx* gbContext) {
-  FX_BOOL LTP, SLTP, bVal;
-  FX_DWORD CONTEXT;
-  CJBig2_Image* GBREG;
-  FX_DWORD line1, line2;
-  uint8_t *pLine, cVal;
-  intptr_t nStride, nStride2;
-  int32_t nBits, k;
-  LTP = 0;
-  JBIG2_ALLOC(GBREG, CJBig2_Image(GBW, GBH));
-  if (GBREG->m_pData == NULL) {
-    delete GBREG;
-    m_pModule->JBig2_Error(
-        "Generic region decoding procedure: Create Image Failed with width = "
-        "%d, height = %d\n",
-        GBW, GBH);
-    return NULL;
-  }
-  pLine = GBREG->m_pData;
-  nStride = GBREG->m_nStride;
-  nStride2 = nStride << 1;
-  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 = (h > 1) ? pLine[-nStride2] << 1 : 0;
-      line2 = (h > 0) ? pLine[-nStride] : 0;
-      CONTEXT = (line1 & 0x0380) | ((line2 >> 3) & 0x007c);
-      for (FX_DWORD w = 0; w < GBW; w += 8) {
-        if (w + 8 < GBW) {
-          nBits = 8;
-          if (h > 1) {
-            line1 = (line1 << 8) | (pLine[-nStride2 + (w >> 3) + 1] << 1);
-          }
-          if (h > 0) {
-            line2 = (line2 << 8) | (pLine[-nStride + (w >> 3) + 1]);
-          }
-        } else {
-          nBits = GBW - w;
-          if (h > 1) {
-            line1 <<= 8;
-          }
-          if (h > 0) {
-            line2 <<= 8;
-          }
-        }
-        cVal = 0;
-        for (k = 0; k < nBits; k++) {
-          if (USESKIP && SKIP->getPixel(w, h)) {
-            bVal = 0;
-          } else {
-            bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
-          }
-          cVal |= bVal << (7 - k);
-          CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal |
-                    ((line1 >> (7 - k)) & 0x0080) |
-                    ((line2 >> (10 - k)) & 0x0004);
-        }
-        pLine[w >> 3] = cVal;
-      }
-    }
-    pLine += nStride;
-  }
-  return GBREG;
-}
 CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template2_opt3(
     CJBig2_ArithDecoder* pArithDecoder,
     JBig2ArithCtx* gbContext) {
   FX_BOOL LTP, SLTP, bVal;
   FX_DWORD CONTEXT;
   CJBig2_Image* GBREG;
   FX_DWORD line1, line2;
   uint8_t *pLine, *pLine1, *pLine2, cVal;
   int32_t nStride, nStride2, k;
   int32_t nLineBytes, nBitsLeft, cc;
@@ skipping 118 matching lines @@
           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;
 }
-CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template3_opt(
-    CJBig2_ArithDecoder* pArithDecoder,
-    JBig2ArithCtx* gbContext) {
-  FX_BOOL LTP, SLTP, bVal;
-  FX_DWORD CONTEXT;
-  CJBig2_Image* GBREG;
-  FX_DWORD line1, line2;
-  LTP = 0;
-  JBIG2_ALLOC(GBREG, 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(2, h - 1);
-      line1 |= GBREG->getPixel(1, h - 1) << 1;
-      line1 |= GBREG->getPixel(0, h - 1) << 2;
-      line2 = 0;
-      for (FX_DWORD w = 0; w < GBW; w++) {
-        if (USESKIP && SKIP->getPixel(w, h)) {
-          bVal = 0;
-        } else {
-          CONTEXT = line2;
-          CONTEXT |= line1 << 4;
-          bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
-        }
-        if (bVal) {
-          GBREG->setPixel(w, h, bVal);
-        }
-        line1 = ((line1 << 1) | GBREG->getPixel(w + 3, h - 1)) & 0x3f;
-        line2 = ((line2 << 1) | bVal) & 0x0f;
-      }
-    }
-  }
-  return GBREG;
-}
-CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template3_opt2(
-    CJBig2_ArithDecoder* pArithDecoder,
-    JBig2ArithCtx* gbContext) {
-  FX_BOOL LTP, SLTP, bVal;
-  FX_DWORD CONTEXT;
-  CJBig2_Image* GBREG;
-  FX_DWORD line1;
-  uint8_t *pLine, cVal;
-  intptr_t nStride;
-  int32_t nBits, k;
-  LTP = 0;
-  JBIG2_ALLOC(GBREG, CJBig2_Image(GBW, GBH));
-  if (GBREG->m_pData == NULL) {
-    delete GBREG;
-    m_pModule->JBig2_Error(
-        "Generic region decoding procedure: Create Image Failed with width = "
-        "%d, height = %d\n",
-        GBW, GBH);
-    return NULL;
-  }
-  pLine = GBREG->m_pData;
-  nStride = GBREG->m_nStride;
-  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 = (h > 0) ? pLine[-nStride] : 0;
-      CONTEXT = (line1 >> 1) & 0x03f0;
-      for (FX_DWORD w = 0; w < GBW; w += 8) {
-        if (w + 8 < GBW) {
-          nBits = 8;
-          if (h > 0) {
-            line1 = (line1 << 8) | (pLine[-nStride + (w >> 3) + 1]);
-          }
-        } else {
-          nBits = GBW - w;
-          if (h > 0) {
-            line1 <<= 8;
-          }
-        }
-        cVal = 0;
-        for (k = 0; k < nBits; k++) {
-          if (USESKIP && SKIP->getPixel(w, h)) {
-            bVal = 0;
-          } else {
-            bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]);
-          }
-          cVal |= bVal << (7 - k);
-          CONTEXT =
-              ((CONTEXT & 0x01f7) << 1) | bVal | ((line1 >> (8 - k)) & 0x0010);
-        }
-        pLine[w >> 3] = cVal;
-      }
-    }
-    pLine += nStride;
-  }
-  return GBREG;
-}
 CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template3_opt3(
     CJBig2_ArithDecoder* pArithDecoder,
     JBig2ArithCtx* gbContext) {
   FX_BOOL LTP, SLTP, bVal;
   FX_DWORD CONTEXT;
   CJBig2_Image* GBREG;
   FX_DWORD line1;
   uint8_t *pLine, *pLine1, cVal;
   int32_t nStride, k;
   int32_t nLineBytes, nBitsLeft, cc;
@@ skipping 2927 matching lines @@
     }
     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;
 }