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author | Dan Sinclair <dsinclair@chromium.org> | 2016-03-14 13:35:12 -0400 |
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committer | Dan Sinclair <dsinclair@chromium.org> | 2016-03-14 13:35:12 -0400 |
commit | 764ec513eecbebd12781bcc96ce81ed5e736ee92 (patch) | |
tree | 12763fde4be1f10ea1183d92185917b2b587e00b /core/fxcodec/jbig2/JBig2_HtrdProc.cpp | |
parent | 97da97662417085774f75c26e535c6fbe70266ae (diff) | |
download | pdfium-764ec513eecbebd12781bcc96ce81ed5e736ee92.tar.xz |
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 .
Diffstat (limited to 'core/fxcodec/jbig2/JBig2_HtrdProc.cpp')
-rw-r--r-- | core/fxcodec/jbig2/JBig2_HtrdProc.cpp | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/core/fxcodec/jbig2/JBig2_HtrdProc.cpp b/core/fxcodec/jbig2/JBig2_HtrdProc.cpp new file mode 100644 index 0000000000..daee067d74 --- /dev/null +++ b/core/fxcodec/jbig2/JBig2_HtrdProc.cpp @@ -0,0 +1,104 @@ +// 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_HtrdProc.h" + +#include <memory> + +#include "core/fxcodec/jbig2/JBig2_GsidProc.h" +#include "core/include/fxcrt/fx_basic.h" + +CJBig2_Image* CJBig2_HTRDProc::decode_Arith(CJBig2_ArithDecoder* pArithDecoder, + JBig2ArithCtx* gbContext, + IFX_Pause* pPause) { + FX_DWORD ng, mg; + int32_t x, y; + FX_DWORD HBPP; + FX_DWORD* GI; + std::unique_ptr<CJBig2_Image> HSKIP; + std::unique_ptr<CJBig2_Image> HTREG(new CJBig2_Image(HBW, HBH)); + HTREG->fill(HDEFPIXEL); + if (HENABLESKIP == 1) { + HSKIP.reset(new CJBig2_Image(HGW, HGH)); + for (mg = 0; mg < HGH; mg++) { + for (ng = 0; ng < HGW; ng++) { + x = (HGX + mg * HRY + ng * HRX) >> 8; + y = (HGY + mg * HRX - ng * HRY) >> 8; + if ((x + HPW <= 0) | (x >= (int32_t)HBW) | (y + HPH <= 0) | + (y >= (int32_t)HPH)) { + HSKIP->setPixel(ng, mg, 1); + } else { + HSKIP->setPixel(ng, mg, 0); + } + } + } + } + HBPP = 1; + while ((FX_DWORD)(1 << HBPP) < HNUMPATS) { + HBPP++; + } + std::unique_ptr<CJBig2_GSIDProc> pGID(new CJBig2_GSIDProc()); + pGID->GSMMR = HMMR; + pGID->GSW = HGW; + pGID->GSH = HGH; + pGID->GSBPP = (uint8_t)HBPP; + pGID->GSUSESKIP = HENABLESKIP; + pGID->GSKIP = HSKIP.get(); + pGID->GSTEMPLATE = HTEMPLATE; + GI = pGID->decode_Arith(pArithDecoder, gbContext, pPause); + if (!GI) + return nullptr; + + for (mg = 0; mg < HGH; mg++) { + for (ng = 0; ng < HGW; ng++) { + x = (HGX + mg * HRY + ng * HRX) >> 8; + y = (HGY + mg * HRX - ng * HRY) >> 8; + FX_DWORD pat_index = GI[mg * HGW + ng]; + if (pat_index >= HNUMPATS) { + pat_index = HNUMPATS - 1; + } + HTREG->composeFrom(x, y, HPATS[pat_index], HCOMBOP); + } + } + FX_Free(GI); + return HTREG.release(); +} + +CJBig2_Image* CJBig2_HTRDProc::decode_MMR(CJBig2_BitStream* pStream, + IFX_Pause* pPause) { + FX_DWORD ng, mg; + int32_t x, y; + FX_DWORD* GI; + std::unique_ptr<CJBig2_Image> HTREG(new CJBig2_Image(HBW, HBH)); + HTREG->fill(HDEFPIXEL); + FX_DWORD HBPP = 1; + while ((FX_DWORD)(1 << HBPP) < HNUMPATS) { + HBPP++; + } + std::unique_ptr<CJBig2_GSIDProc> pGID(new CJBig2_GSIDProc()); + pGID->GSMMR = HMMR; + pGID->GSW = HGW; + pGID->GSH = HGH; + pGID->GSBPP = (uint8_t)HBPP; + pGID->GSUSESKIP = 0; + GI = pGID->decode_MMR(pStream, pPause); + if (!GI) + return nullptr; + + for (mg = 0; mg < HGH; mg++) { + for (ng = 0; ng < HGW; ng++) { + x = (HGX + mg * HRY + ng * HRX) >> 8; + y = (HGY + mg * HRX - ng * HRY) >> 8; + FX_DWORD pat_index = GI[mg * HGW + ng]; + if (pat_index >= HNUMPATS) { + pat_index = HNUMPATS - 1; + } + HTREG->composeFrom(x, y, HPATS[pat_index], HCOMBOP); + } + } + FX_Free(GI); + return HTREG.release(); +} |