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authorDan Sinclair <dsinclair@chromium.org>2016-03-14 13:35:12 -0400
committerDan Sinclair <dsinclair@chromium.org>2016-03-14 13:35:12 -0400
commit764ec513eecbebd12781bcc96ce81ed5e736ee92 (patch)
tree12763fde4be1f10ea1183d92185917b2b587e00b /core/fxcodec/jbig2/JBig2_TrdProc.cpp
parent97da97662417085774f75c26e535c6fbe70266ae (diff)
downloadpdfium-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_TrdProc.cpp')
-rw-r--r--core/fxcodec/jbig2/JBig2_TrdProc.cpp407
1 files changed, 407 insertions, 0 deletions
diff --git a/core/fxcodec/jbig2/JBig2_TrdProc.cpp b/core/fxcodec/jbig2/JBig2_TrdProc.cpp
new file mode 100644
index 0000000000..401249e3f2
--- /dev/null
+++ b/core/fxcodec/jbig2/JBig2_TrdProc.cpp
@@ -0,0 +1,407 @@
+// 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_TrdProc.h"
+
+#include <memory>
+
+#include "core/fxcodec/jbig2/JBig2_ArithDecoder.h"
+#include "core/fxcodec/jbig2/JBig2_ArithIntDecoder.h"
+#include "core/fxcodec/jbig2/JBig2_GrrdProc.h"
+#include "core/fxcodec/jbig2/JBig2_HuffmanDecoder.h"
+
+CJBig2_Image* CJBig2_TRDProc::decode_Huffman(CJBig2_BitStream* pStream,
+ JBig2ArithCtx* grContext) {
+ int32_t STRIPT, FIRSTS;
+ FX_DWORD NINSTANCES;
+ int32_t DT, DFS, CURS;
+ int32_t SI, TI;
+ CJBig2_Image* IBI;
+ FX_DWORD WI, HI;
+ int32_t IDS;
+ FX_BOOL RI;
+ int32_t RDWI, RDHI, RDXI, RDYI;
+ CJBig2_Image* IBOI;
+ FX_DWORD WOI, HOI;
+ FX_BOOL bFirst;
+ FX_DWORD nTmp;
+ int32_t nVal, nBits;
+ std::unique_ptr<CJBig2_HuffmanDecoder> pHuffmanDecoder(
+ new CJBig2_HuffmanDecoder(pStream));
+ std::unique_ptr<CJBig2_Image> SBREG(new CJBig2_Image(SBW, SBH));
+ SBREG->fill(SBDEFPIXEL);
+ if (pHuffmanDecoder->decodeAValue(SBHUFFDT, &STRIPT) != 0)
+ return nullptr;
+
+ STRIPT *= SBSTRIPS;
+ STRIPT = -STRIPT;
+ FIRSTS = 0;
+ NINSTANCES = 0;
+ while (NINSTANCES < SBNUMINSTANCES) {
+ if (pHuffmanDecoder->decodeAValue(SBHUFFDT, &DT) != 0)
+ return nullptr;
+
+ DT *= SBSTRIPS;
+ STRIPT = STRIPT + DT;
+ bFirst = TRUE;
+ for (;;) {
+ if (bFirst) {
+ if (pHuffmanDecoder->decodeAValue(SBHUFFFS, &DFS) != 0)
+ return nullptr;
+
+ FIRSTS = FIRSTS + DFS;
+ CURS = FIRSTS;
+ bFirst = FALSE;
+ } else {
+ nVal = pHuffmanDecoder->decodeAValue(SBHUFFDS, &IDS);
+ if (nVal == JBIG2_OOB) {
+ break;
+ } else if (nVal != 0) {
+ return nullptr;
+ } else {
+ CURS = CURS + IDS + SBDSOFFSET;
+ }
+ }
+ uint8_t CURT = 0;
+ if (SBSTRIPS != 1) {
+ nTmp = 1;
+ while ((FX_DWORD)(1 << nTmp) < SBSTRIPS) {
+ nTmp++;
+ }
+ if (pStream->readNBits(nTmp, &nVal) != 0)
+ return nullptr;
+
+ CURT = nVal;
+ }
+ TI = STRIPT + CURT;
+ nVal = 0;
+ nBits = 0;
+ FX_DWORD IDI;
+ for (;;) {
+ if (pStream->read1Bit(&nTmp) != 0)
+ return nullptr;
+
+ nVal = (nVal << 1) | nTmp;
+ nBits++;
+ for (IDI = 0; IDI < SBNUMSYMS; IDI++) {
+ if ((nBits == SBSYMCODES[IDI].codelen) &&
+ (nVal == SBSYMCODES[IDI].code)) {
+ break;
+ }
+ }
+ if (IDI < SBNUMSYMS) {
+ break;
+ }
+ }
+ if (SBREFINE == 0) {
+ RI = 0;
+ } else {
+ if (pStream->read1Bit(&RI) != 0) {
+ return nullptr;
+ }
+ }
+ if (RI == 0) {
+ IBI = SBSYMS[IDI];
+ } else {
+ if ((pHuffmanDecoder->decodeAValue(SBHUFFRDW, &RDWI) != 0) ||
+ (pHuffmanDecoder->decodeAValue(SBHUFFRDH, &RDHI) != 0) ||
+ (pHuffmanDecoder->decodeAValue(SBHUFFRDX, &RDXI) != 0) ||
+ (pHuffmanDecoder->decodeAValue(SBHUFFRDY, &RDYI) != 0) ||
+ (pHuffmanDecoder->decodeAValue(SBHUFFRSIZE, &nVal) != 0)) {
+ return nullptr;
+ }
+ pStream->alignByte();
+ nTmp = pStream->getOffset();
+ IBOI = SBSYMS[IDI];
+ if (!IBOI)
+ return nullptr;
+
+ WOI = IBOI->m_nWidth;
+ HOI = IBOI->m_nHeight;
+ if ((int)(WOI + RDWI) < 0 || (int)(HOI + RDHI) < 0)
+ return nullptr;
+
+ std::unique_ptr<CJBig2_GRRDProc> pGRRD(new CJBig2_GRRDProc());
+ pGRRD->GRW = WOI + RDWI;
+ pGRRD->GRH = HOI + RDHI;
+ pGRRD->GRTEMPLATE = SBRTEMPLATE;
+ pGRRD->GRREFERENCE = IBOI;
+ pGRRD->GRREFERENCEDX = (RDWI >> 2) + RDXI;
+ pGRRD->GRREFERENCEDY = (RDHI >> 2) + RDYI;
+ pGRRD->TPGRON = 0;
+ pGRRD->GRAT[0] = SBRAT[0];
+ pGRRD->GRAT[1] = SBRAT[1];
+ pGRRD->GRAT[2] = SBRAT[2];
+ pGRRD->GRAT[3] = SBRAT[3];
+
+ {
+ std::unique_ptr<CJBig2_ArithDecoder> pArithDecoder(
+ new CJBig2_ArithDecoder(pStream));
+ IBI = pGRRD->decode(pArithDecoder.get(), grContext);
+ if (!IBI)
+ return nullptr;
+ }
+
+ pStream->alignByte();
+ pStream->offset(2);
+ if ((FX_DWORD)nVal != (pStream->getOffset() - nTmp)) {
+ delete IBI;
+ return nullptr;
+ }
+ }
+ if (!IBI) {
+ continue;
+ }
+ WI = IBI->m_nWidth;
+ HI = IBI->m_nHeight;
+ if (TRANSPOSED == 0 && ((REFCORNER == JBIG2_CORNER_TOPRIGHT) ||
+ (REFCORNER == JBIG2_CORNER_BOTTOMRIGHT))) {
+ CURS = CURS + WI - 1;
+ } else if (TRANSPOSED == 1 && ((REFCORNER == JBIG2_CORNER_BOTTOMLEFT) ||
+ (REFCORNER == JBIG2_CORNER_BOTTOMRIGHT))) {
+ CURS = CURS + HI - 1;
+ }
+ SI = CURS;
+ if (TRANSPOSED == 0) {
+ switch (REFCORNER) {
+ case JBIG2_CORNER_TOPLEFT:
+ SBREG->composeFrom(SI, TI, IBI, SBCOMBOP);
+ break;
+ case JBIG2_CORNER_TOPRIGHT:
+ SBREG->composeFrom(SI - WI + 1, TI, IBI, SBCOMBOP);
+ break;
+ case JBIG2_CORNER_BOTTOMLEFT:
+ SBREG->composeFrom(SI, TI - HI + 1, IBI, SBCOMBOP);
+ break;
+ case JBIG2_CORNER_BOTTOMRIGHT:
+ SBREG->composeFrom(SI - WI + 1, TI - HI + 1, IBI, SBCOMBOP);
+ break;
+ }
+ } else {
+ switch (REFCORNER) {
+ case JBIG2_CORNER_TOPLEFT:
+ SBREG->composeFrom(TI, SI, IBI, SBCOMBOP);
+ break;
+ case JBIG2_CORNER_TOPRIGHT:
+ SBREG->composeFrom(TI - WI + 1, SI, IBI, SBCOMBOP);
+ break;
+ case JBIG2_CORNER_BOTTOMLEFT:
+ SBREG->composeFrom(TI, SI - HI + 1, IBI, SBCOMBOP);
+ break;
+ case JBIG2_CORNER_BOTTOMRIGHT:
+ SBREG->composeFrom(TI - WI + 1, SI - HI + 1, IBI, SBCOMBOP);
+ break;
+ }
+ }
+ if (RI != 0) {
+ delete IBI;
+ }
+ if (TRANSPOSED == 0 && ((REFCORNER == JBIG2_CORNER_TOPLEFT) ||
+ (REFCORNER == JBIG2_CORNER_BOTTOMLEFT))) {
+ CURS = CURS + WI - 1;
+ } else if (TRANSPOSED == 1 && ((REFCORNER == JBIG2_CORNER_TOPLEFT) ||
+ (REFCORNER == JBIG2_CORNER_TOPRIGHT))) {
+ CURS = CURS + HI - 1;
+ }
+ NINSTANCES = NINSTANCES + 1;
+ }
+ }
+ return SBREG.release();
+}
+
+CJBig2_Image* CJBig2_TRDProc::decode_Arith(CJBig2_ArithDecoder* pArithDecoder,
+ JBig2ArithCtx* grContext,
+ JBig2IntDecoderState* pIDS) {
+ std::unique_ptr<CJBig2_ArithIntDecoder> IADT;
+ std::unique_ptr<CJBig2_ArithIntDecoder> IAFS;
+ std::unique_ptr<CJBig2_ArithIntDecoder> IADS;
+ std::unique_ptr<CJBig2_ArithIntDecoder> IAIT;
+ std::unique_ptr<CJBig2_ArithIntDecoder> IARI;
+ std::unique_ptr<CJBig2_ArithIntDecoder> IARDW;
+ std::unique_ptr<CJBig2_ArithIntDecoder> IARDH;
+ std::unique_ptr<CJBig2_ArithIntDecoder> IARDX;
+ std::unique_ptr<CJBig2_ArithIntDecoder> IARDY;
+ std::unique_ptr<CJBig2_ArithIaidDecoder> IAID;
+ CJBig2_ArithIntDecoder* pIADT;
+ CJBig2_ArithIntDecoder* pIAFS;
+ CJBig2_ArithIntDecoder* pIADS;
+ CJBig2_ArithIntDecoder* pIAIT;
+ CJBig2_ArithIntDecoder* pIARI;
+ CJBig2_ArithIntDecoder* pIARDW;
+ CJBig2_ArithIntDecoder* pIARDH;
+ CJBig2_ArithIntDecoder* pIARDX;
+ CJBig2_ArithIntDecoder* pIARDY;
+ CJBig2_ArithIaidDecoder* pIAID;
+ if (pIDS) {
+ pIADT = pIDS->IADT;
+ pIAFS = pIDS->IAFS;
+ pIADS = pIDS->IADS;
+ pIAIT = pIDS->IAIT;
+ pIARI = pIDS->IARI;
+ pIARDW = pIDS->IARDW;
+ pIARDH = pIDS->IARDH;
+ pIARDX = pIDS->IARDX;
+ pIARDY = pIDS->IARDY;
+ pIAID = pIDS->IAID;
+ } else {
+ IADT.reset(new CJBig2_ArithIntDecoder());
+ IAFS.reset(new CJBig2_ArithIntDecoder());
+ IADS.reset(new CJBig2_ArithIntDecoder());
+ IAIT.reset(new CJBig2_ArithIntDecoder());
+ IARI.reset(new CJBig2_ArithIntDecoder());
+ IARDW.reset(new CJBig2_ArithIntDecoder());
+ IARDH.reset(new CJBig2_ArithIntDecoder());
+ IARDX.reset(new CJBig2_ArithIntDecoder());
+ IARDY.reset(new CJBig2_ArithIntDecoder());
+ IAID.reset(new CJBig2_ArithIaidDecoder(SBSYMCODELEN));
+ pIADT = IADT.get();
+ pIAFS = IAFS.get();
+ pIADS = IADS.get();
+ pIAIT = IAIT.get();
+ pIARI = IARI.get();
+ pIARDW = IARDW.get();
+ pIARDH = IARDH.get();
+ pIARDX = IARDX.get();
+ pIARDY = IARDY.get();
+ pIAID = IAID.get();
+ }
+ std::unique_ptr<CJBig2_Image> SBREG(new CJBig2_Image(SBW, SBH));
+ SBREG->fill(SBDEFPIXEL);
+ int32_t STRIPT;
+ pIADT->decode(pArithDecoder, &STRIPT);
+ STRIPT *= SBSTRIPS;
+ STRIPT = -STRIPT;
+ int32_t FIRSTS = 0;
+ FX_DWORD NINSTANCES = 0;
+ while (NINSTANCES < SBNUMINSTANCES) {
+ int32_t CURS;
+ int32_t DT;
+ pIADT->decode(pArithDecoder, &DT);
+ DT *= SBSTRIPS;
+ STRIPT += DT;
+ bool bFirst = true;
+ for (;;) {
+ if (bFirst) {
+ int32_t DFS;
+ pIAFS->decode(pArithDecoder, &DFS);
+ FIRSTS += DFS;
+ CURS = FIRSTS;
+ bFirst = false;
+ } else {
+ int32_t IDS;
+ if (!pIADS->decode(pArithDecoder, &IDS))
+ break;
+ CURS += IDS + SBDSOFFSET;
+ }
+ if (NINSTANCES >= SBNUMINSTANCES) {
+ break;
+ }
+ int CURT = 0;
+ if (SBSTRIPS != 1)
+ pIAIT->decode(pArithDecoder, &CURT);
+
+ int32_t TI = STRIPT + CURT;
+ FX_DWORD IDI;
+ pIAID->decode(pArithDecoder, &IDI);
+ if (IDI >= SBNUMSYMS)
+ return nullptr;
+
+ int RI;
+ if (SBREFINE == 0)
+ RI = 0;
+ else
+ pIARI->decode(pArithDecoder, &RI);
+
+ std::unique_ptr<CJBig2_Image> IBI;
+ CJBig2_Image* pIBI;
+ if (RI == 0) {
+ pIBI = SBSYMS[IDI];
+ } else {
+ int32_t RDWI;
+ int32_t RDHI;
+ int32_t RDXI;
+ int32_t RDYI;
+ pIARDW->decode(pArithDecoder, &RDWI);
+ pIARDH->decode(pArithDecoder, &RDHI);
+ pIARDX->decode(pArithDecoder, &RDXI);
+ pIARDY->decode(pArithDecoder, &RDYI);
+ CJBig2_Image* IBOI = SBSYMS[IDI];
+ FX_DWORD WOI = IBOI->m_nWidth;
+ FX_DWORD HOI = IBOI->m_nHeight;
+ if ((int)(WOI + RDWI) < 0 || (int)(HOI + RDHI) < 0) {
+ return nullptr;
+ }
+ std::unique_ptr<CJBig2_GRRDProc> pGRRD(new CJBig2_GRRDProc());
+ pGRRD->GRW = WOI + RDWI;
+ pGRRD->GRH = HOI + RDHI;
+ pGRRD->GRTEMPLATE = SBRTEMPLATE;
+ pGRRD->GRREFERENCE = IBOI;
+ pGRRD->GRREFERENCEDX = (RDWI >> 1) + RDXI;
+ pGRRD->GRREFERENCEDY = (RDHI >> 1) + RDYI;
+ pGRRD->TPGRON = 0;
+ pGRRD->GRAT[0] = SBRAT[0];
+ pGRRD->GRAT[1] = SBRAT[1];
+ pGRRD->GRAT[2] = SBRAT[2];
+ pGRRD->GRAT[3] = SBRAT[3];
+ IBI.reset(pGRRD->decode(pArithDecoder, grContext));
+ pIBI = IBI.get();
+ }
+ if (!pIBI)
+ return nullptr;
+
+ FX_DWORD WI = pIBI->m_nWidth;
+ FX_DWORD HI = pIBI->m_nHeight;
+ if (TRANSPOSED == 0 && ((REFCORNER == JBIG2_CORNER_TOPRIGHT) ||
+ (REFCORNER == JBIG2_CORNER_BOTTOMRIGHT))) {
+ CURS += WI - 1;
+ } else if (TRANSPOSED == 1 && ((REFCORNER == JBIG2_CORNER_BOTTOMLEFT) ||
+ (REFCORNER == JBIG2_CORNER_BOTTOMRIGHT))) {
+ CURS += HI - 1;
+ }
+ int32_t SI = CURS;
+ if (TRANSPOSED == 0) {
+ switch (REFCORNER) {
+ case JBIG2_CORNER_TOPLEFT:
+ SBREG->composeFrom(SI, TI, pIBI, SBCOMBOP);
+ break;
+ case JBIG2_CORNER_TOPRIGHT:
+ SBREG->composeFrom(SI - WI + 1, TI, pIBI, SBCOMBOP);
+ break;
+ case JBIG2_CORNER_BOTTOMLEFT:
+ SBREG->composeFrom(SI, TI - HI + 1, pIBI, SBCOMBOP);
+ break;
+ case JBIG2_CORNER_BOTTOMRIGHT:
+ SBREG->composeFrom(SI - WI + 1, TI - HI + 1, pIBI, SBCOMBOP);
+ break;
+ }
+ } else {
+ switch (REFCORNER) {
+ case JBIG2_CORNER_TOPLEFT:
+ SBREG->composeFrom(TI, SI, pIBI, SBCOMBOP);
+ break;
+ case JBIG2_CORNER_TOPRIGHT:
+ SBREG->composeFrom(TI - WI + 1, SI, pIBI, SBCOMBOP);
+ break;
+ case JBIG2_CORNER_BOTTOMLEFT:
+ SBREG->composeFrom(TI, SI - HI + 1, pIBI, SBCOMBOP);
+ break;
+ case JBIG2_CORNER_BOTTOMRIGHT:
+ SBREG->composeFrom(TI - WI + 1, SI - HI + 1, pIBI, SBCOMBOP);
+ break;
+ }
+ }
+ if (TRANSPOSED == 0 && ((REFCORNER == JBIG2_CORNER_TOPLEFT) ||
+ (REFCORNER == JBIG2_CORNER_BOTTOMLEFT))) {
+ CURS += WI - 1;
+ } else if (TRANSPOSED == 1 && ((REFCORNER == JBIG2_CORNER_TOPLEFT) ||
+ (REFCORNER == JBIG2_CORNER_TOPRIGHT))) {
+ CURS += HI - 1;
+ }
+ ++NINSTANCES;
+ }
+ }
+ return SBREG.release();
+}