From b060a551917627e3436bfb0a2a5c7a08cb5c58af Mon Sep 17 00:00:00 2001 From: Lei Zhang Date: Thu, 24 Sep 2015 01:13:26 -0700 Subject: 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 . --- core/src/fxcodec/jbig2/JBig2_GsidProc.cpp | 150 ++++++++++++++++++++++++++++++ 1 file changed, 150 insertions(+) create mode 100644 core/src/fxcodec/jbig2/JBig2_GsidProc.cpp (limited to 'core/src/fxcodec/jbig2/JBig2_GsidProc.cpp') diff --git a/core/src/fxcodec/jbig2/JBig2_GsidProc.cpp b/core/src/fxcodec/jbig2/JBig2_GsidProc.cpp new file mode 100644 index 0000000000..b97a212926 --- /dev/null +++ b/core/src/fxcodec/jbig2/JBig2_GsidProc.cpp @@ -0,0 +1,150 @@ +// 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_GsidProc.h" + +#include "../../../../third_party/base/nonstd_unique_ptr.h" +#include "../../../include/fxcrt/fx_basic.h" +#include "JBig2_BitStream.h" +#include "JBig2_GrdProc.h" +#include "JBig2_Image.h" + +FX_DWORD* CJBig2_GSIDProc::decode_Arith(CJBig2_ArithDecoder* pArithDecoder, + JBig2ArithCtx* gbContext, + IFX_Pause* pPause) { + CJBig2_Image** GSPLANES; + int32_t J, K; + FX_DWORD x, y; + FX_DWORD* GSVALS; + GSPLANES = FX_Alloc(CJBig2_Image*, GSBPP); + GSVALS = FX_Alloc2D(FX_DWORD, GSW, GSH); + JBIG2_memset(GSPLANES, 0, sizeof(CJBig2_Image*) * GSBPP); + JBIG2_memset(GSVALS, 0, sizeof(FX_DWORD) * GSW * GSH); + + nonstd::unique_ptr pGRD(new 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; + } + FXCODEC_STATUS status = pGRD->Start_decode_Arith( + &GSPLANES[GSBPP - 1], pArithDecoder, gbContext, nullptr); + while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE) { + pGRD->Continue_decode(pPause); + } + if (!GSPLANES[GSBPP - 1]) { + goto failed; + } + J = GSBPP - 2; + while (J >= 0) { + FXCODEC_STATUS status = pGRD->Start_decode_Arith( + &GSPLANES[J], pArithDecoder, gbContext, nullptr); + while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE) { + pGRD->Continue_decode(pPause); + } + if (!GSPLANES[J]) { + for (K = GSBPP - 1; K > J; K--) { + delete GSPLANES[K]; + goto failed; + } + } + GSPLANES[J]->composeFrom(0, 0, GSPLANES[J + 1], JBIG2_COMPOSE_XOR); + J = J - 1; + } + for (y = 0; y < GSH; y++) { + for (x = 0; x < GSW; x++) { + for (J = 0; J < GSBPP; J++) { + GSVALS[y * GSW + x] |= GSPLANES[J]->getPixel(x, y) << J; + } + } + } + for (J = 0; J < GSBPP; J++) { + delete GSPLANES[J]; + } + FX_Free(GSPLANES); + return GSVALS; +failed: + FX_Free(GSPLANES); + FX_Free(GSVALS); + return nullptr; +} + +FX_DWORD* CJBig2_GSIDProc::decode_MMR(CJBig2_BitStream* pStream, + IFX_Pause* pPause) { + CJBig2_Image** GSPLANES; + int32_t J, K; + FX_DWORD x, y; + FX_DWORD* GSVALS; + GSPLANES = FX_Alloc(CJBig2_Image*, GSBPP); + GSVALS = FX_Alloc2D(FX_DWORD, GSW, GSH); + JBIG2_memset(GSPLANES, 0, sizeof(CJBig2_Image*) * GSBPP); + JBIG2_memset(GSVALS, 0, sizeof(FX_DWORD) * GSW * GSH); + + nonstd::unique_ptr pGRD(new CJBig2_GRDProc()); + pGRD->MMR = GSMMR; + pGRD->GBW = GSW; + pGRD->GBH = GSH; + FXCODEC_STATUS status = + pGRD->Start_decode_MMR(&GSPLANES[GSBPP - 1], pStream, nullptr); + while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE) { + pGRD->Continue_decode(pPause); + } + if (!GSPLANES[GSBPP - 1]) { + goto failed; + } + pStream->alignByte(); + pStream->offset(3); + J = GSBPP - 2; + while (J >= 0) { + FXCODEC_STATUS status = + pGRD->Start_decode_MMR(&GSPLANES[J], pStream, nullptr); + while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE) { + pGRD->Continue_decode(pPause); + } + if (!GSPLANES[J]) { + for (K = GSBPP - 1; K > J; K--) { + delete GSPLANES[K]; + goto failed; + } + } + pStream->alignByte(); + pStream->offset(3); + GSPLANES[J]->composeFrom(0, 0, GSPLANES[J + 1], JBIG2_COMPOSE_XOR); + J = J - 1; + } + for (y = 0; y < GSH; y++) { + for (x = 0; x < GSW; x++) { + for (J = 0; J < GSBPP; J++) { + GSVALS[y * GSW + x] |= GSPLANES[J]->getPixel(x, y) << J; + } + } + } + for (J = 0; J < GSBPP; J++) { + delete GSPLANES[J]; + } + FX_Free(GSPLANES); + return GSVALS; +failed: + FX_Free(GSPLANES); + FX_Free(GSVALS); + return nullptr; +} -- cgit v1.2.3