// 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_PddProc.h"
|
|
#include <memory>
|
|
#include "core/fxcodec/jbig2/JBig2_GrdProc.h"
|
#include "core/fxcodec/jbig2/JBig2_Image.h"
|
#include "core/fxcodec/jbig2/JBig2_PatternDict.h"
|
|
CJBig2_PatternDict* CJBig2_PDDProc::decode_Arith(
|
CJBig2_ArithDecoder* pArithDecoder,
|
JBig2ArithCtx* gbContext,
|
IFX_Pause* pPause) {
|
uint32_t GRAY;
|
CJBig2_Image* BHDC = nullptr;
|
std::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);
|
|
std::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)
|
status = 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) {
|
uint32_t GRAY;
|
CJBig2_Image* BHDC = nullptr;
|
std::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);
|
|
std::unique_ptr<CJBig2_GRDProc> pGRD(new CJBig2_GRDProc());
|
pGRD->MMR = HDMMR;
|
pGRD->GBW = (GRAYMAX + 1) * HDPW;
|
pGRD->GBH = HDPH;
|
pGRD->Start_decode_MMR(&BHDC, pStream, nullptr);
|
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();
|
}
|
