diff options
author | Lei Zhang <thestig@chromium.org> | 2015-09-24 01:13:26 -0700 |
---|---|---|
committer | Lei Zhang <thestig@chromium.org> | 2015-09-24 01:13:26 -0700 |
commit | b060a551917627e3436bfb0a2a5c7a08cb5c58af (patch) | |
tree | ecb7fa1d5d18bb07b3fd38d2eeb81d77b603e24b /core/src/fxcodec/jbig2/JBig2_PddProc.cpp | |
parent | 99b56f693e01e1d5e146cbfba8c750b943a0eaab (diff) | |
download | pdfium-b060a551917627e3436bfb0a2a5c7a08cb5c58af.tar.xz |
Merge to XFA: Split up JBig2_GeneralDecoder.cpp.
TBR=tsepez@chromium.org
Review URL: https://codereview.chromium.org/1359233002 .
(cherry picked from commit 630a28442364f03c1d3d9b48873da42755e1fddf)
Review URL: https://codereview.chromium.org/1364083004 .
Diffstat (limited to 'core/src/fxcodec/jbig2/JBig2_PddProc.cpp')
-rw-r--r-- | core/src/fxcodec/jbig2/JBig2_PddProc.cpp | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/core/src/fxcodec/jbig2/JBig2_PddProc.cpp b/core/src/fxcodec/jbig2/JBig2_PddProc.cpp new file mode 100644 index 0000000000..56443a01d2 --- /dev/null +++ b/core/src/fxcodec/jbig2/JBig2_PddProc.cpp @@ -0,0 +1,86 @@ +// 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_PddProc.h" + +#include "../../../../third_party/base/nonstd_unique_ptr.h" +#include "JBig2_GrdProc.h" +#include "JBig2_Image.h" +#include "JBig2_PatternDict.h" + +CJBig2_PatternDict* CJBig2_PDDProc::decode_Arith( + CJBig2_ArithDecoder* pArithDecoder, + JBig2ArithCtx* gbContext, + IFX_Pause* pPause) { + FX_DWORD GRAY; + CJBig2_Image* BHDC = nullptr; + nonstd::unique_ptr<CJBig2_PatternDict> pDict(new CJBig2_PatternDict()); + pDict->NUMPATS = GRAYMAX + 1; + pDict->HDPATS = FX_Alloc(CJBig2_Image*, pDict->NUMPATS); + JBIG2_memset(pDict->HDPATS, 0, sizeof(CJBig2_Image*) * pDict->NUMPATS); + + nonstd::unique_ptr<CJBig2_GRDProc> pGRD(new CJBig2_GRDProc()); + pGRD->MMR = HDMMR; + pGRD->GBW = (GRAYMAX + 1) * HDPW; + pGRD->GBH = HDPH; + pGRD->GBTEMPLATE = HDTEMPLATE; + pGRD->TPGDON = 0; + pGRD->USESKIP = 0; + pGRD->GBAT[0] = -(int32_t)HDPW; + pGRD->GBAT[1] = 0; + 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; + } + FXCODEC_STATUS status = + pGRD->Start_decode_Arith(&BHDC, pArithDecoder, gbContext, nullptr); + while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE) { + pGRD->Continue_decode(pPause); + } + if (!BHDC) + return nullptr; + + GRAY = 0; + while (GRAY <= GRAYMAX) { + pDict->HDPATS[GRAY] = BHDC->subImage(HDPW * GRAY, 0, HDPW, HDPH); + GRAY = GRAY + 1; + } + delete BHDC; + return pDict.release(); +} + +CJBig2_PatternDict* CJBig2_PDDProc::decode_MMR(CJBig2_BitStream* pStream, + IFX_Pause* pPause) { + FX_DWORD GRAY; + CJBig2_Image* BHDC = nullptr; + nonstd::unique_ptr<CJBig2_PatternDict> pDict(new CJBig2_PatternDict()); + pDict->NUMPATS = GRAYMAX + 1; + pDict->HDPATS = FX_Alloc(CJBig2_Image*, pDict->NUMPATS); + JBIG2_memset(pDict->HDPATS, 0, sizeof(CJBig2_Image*) * pDict->NUMPATS); + + nonstd::unique_ptr<CJBig2_GRDProc> pGRD(new CJBig2_GRDProc()); + pGRD->MMR = HDMMR; + pGRD->GBW = (GRAYMAX + 1) * HDPW; + pGRD->GBH = HDPH; + FXCODEC_STATUS status = pGRD->Start_decode_MMR(&BHDC, pStream, nullptr); + while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE) { + pGRD->Continue_decode(pPause); + } + if (!BHDC) + return nullptr; + + GRAY = 0; + while (GRAY <= GRAYMAX) { + pDict->HDPATS[GRAY] = BHDC->subImage(HDPW * GRAY, 0, HDPW, HDPH); + GRAY = GRAY + 1; + } + delete BHDC; + return pDict.release(); +} |