Remove JBig2_GsidProc class

This CL removes the JBig2_GsidProc since it is only used as a single
instance in each of the methods in CJBig2_HTRDProc, so it is completely
unnecessary.

Change-Id: I69d0a4a059b9eb6ebcbbb79b92ea1cd6c22cb1cb
Reviewed-on: https://pdfium-review.googlesource.com/7930
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 0 insertions, 106 deletions

diff --git a/core/fxcodec/jbig2/JBig2_GsidProc.cpp b/core/fxcodec/jbig2/JBig2_GsidProc.cpp
deleted file mode 100644
index 6510f08487..0000000000
--- a/core/fxcodec/jbig2/JBig2_GsidProc.cpp
+++ /dev/null
@@ -1,106 +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/fxcodec/jbig2/JBig2_GsidProc.h"
-
-#include <memory>
-#include <utility>
-#include <vector>
-
-#include "core/fxcodec/jbig2/JBig2_BitStream.h"
-#include "core/fxcodec/jbig2/JBig2_GrdProc.h"
-#include "core/fxcodec/jbig2/JBig2_Image.h"
-#include "core/fxcrt/fx_basic.h"
-#include "third_party/base/ptr_util.h"
-
-uint32_t* CJBig2_GSIDProc::decode_Arith(CJBig2_ArithDecoder* pArithDecoder,
-                                        JBig2ArithCtx* gbContext,
-                                        IFX_Pause* pPause) {
-  auto pGRD = pdfium::MakeUnique<CJBig2_GRDProc>();
-  pGRD->MMR = GSMMR;
-  pGRD->GBW = GSW;
-  pGRD->GBH = GSH;
-  pGRD->GBTEMPLATE = GSTEMPLATE;
-  pGRD->TPGDON = 0;
-  pGRD->USESKIP = GSUSESKIP;
-  pGRD->SKIP = GSKIP;
-  if (GSTEMPLATE <= 1) {
-    pGRD->GBAT[0] = 3;
-  } else {
-    pGRD->GBAT[0] = 2;
-  }
-  pGRD->GBAT[1] = -1;
-  if (pGRD->GBTEMPLATE == 0) {
-    pGRD->GBAT[2] = -3;
-    pGRD->GBAT[3] = -1;
-    pGRD->GBAT[4] = 2;
-    pGRD->GBAT[5] = -2;
-    pGRD->GBAT[6] = -2;
-    pGRD->GBAT[7] = -2;
-  }
-
-  std::vector<std::unique_ptr<CJBig2_Image>> GSPLANES(GSBPP);
-  for (int32_t i = GSBPP - 1; i >= 0; --i) {
-    std::unique_ptr<CJBig2_Image> pImage;
-    FXCODEC_STATUS status =
-        pGRD->Start_decode_Arith(&pImage, pArithDecoder, gbContext, nullptr);
-    while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE)
-      status = pGRD->Continue_decode(pPause, pArithDecoder);
-
-    if (!pImage)
-      return nullptr;
-
-    GSPLANES[i] = std::move(pImage);
-    if (i < GSBPP - 1)
-      GSPLANES[i]->composeFrom(0, 0, GSPLANES[i + 1].get(), JBIG2_COMPOSE_XOR);
-  }
-  std::unique_ptr<uint32_t, FxFreeDeleter> GSVALS(
-      FX_Alloc2D(uint32_t, GSW, GSH));
-  JBIG2_memset(GSVALS.get(), 0, sizeof(uint32_t) * GSW * GSH);
-  for (uint32_t y = 0; y < GSH; ++y) {
-    for (uint32_t x = 0; x < GSW; ++x) {
-      for (int32_t i = 0; i < GSBPP; ++i)
-        GSVALS.get()[y * GSW + x] |= GSPLANES[i]->getPixel(x, y) << i;
-    }
-  }
-  return GSVALS.release();
-}
-
-uint32_t* CJBig2_GSIDProc::decode_MMR(CJBig2_BitStream* pStream) {
-  auto pGRD = pdfium::MakeUnique<CJBig2_GRDProc>();
-  pGRD->MMR = GSMMR;
-  pGRD->GBW = GSW;
-  pGRD->GBH = GSH;
-
-  std::vector<std::unique_ptr<CJBig2_Image>> GSPLANES(GSBPP);
-  pGRD->Start_decode_MMR(&GSPLANES[GSBPP - 1], pStream);
-  if (!GSPLANES[GSBPP - 1])
-    return nullptr;
-
-  pStream->alignByte();
-  pStream->offset(3);
-  int32_t J = GSBPP - 2;
-  while (J >= 0) {
-    pGRD->Start_decode_MMR(&GSPLANES[J], pStream);
-    if (!GSPLANES[J])
-      return nullptr;
-
-    pStream->alignByte();
-    pStream->offset(3);
-    GSPLANES[J]->composeFrom(0, 0, GSPLANES[J + 1].get(), JBIG2_COMPOSE_XOR);
-    J = J - 1;
-  }
-  std::unique_ptr<uint32_t> GSVALS(FX_Alloc2D(uint32_t, GSW, GSH));
-  JBIG2_memset(GSVALS.get(), 0, sizeof(uint32_t) * GSW * GSH);
-  for (uint32_t y = 0; y < GSH; ++y) {
-    for (uint32_t x = 0; x < GSW; ++x) {
-      for (J = 0; J < GSBPP; ++J) {
-        GSVALS.get()[y * GSW + x] |= GSPLANES[J]->getPixel(x, y) << J;
-      }
-    }
-  }
-  return GSVALS.release();
-}