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-rw-r--r--core/fxcodec/jbig2/JBig2_TrdProc.cpp130
1 files changed, 56 insertions, 74 deletions
diff --git a/core/fxcodec/jbig2/JBig2_TrdProc.cpp b/core/fxcodec/jbig2/JBig2_TrdProc.cpp
index b7661045dc..f65332050b 100644
--- a/core/fxcodec/jbig2/JBig2_TrdProc.cpp
+++ b/core/fxcodec/jbig2/JBig2_TrdProc.cpp
@@ -12,6 +12,7 @@
#include "core/fxcodec/jbig2/JBig2_ArithIntDecoder.h"
#include "core/fxcodec/jbig2/JBig2_GrrdProc.h"
#include "core/fxcodec/jbig2/JBig2_HuffmanDecoder.h"
+#include "core/fxcrt/cfx_maybe_owned.h"
#include "third_party/base/ptr_util.h"
std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::decode_Huffman(
@@ -82,8 +83,8 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::decode_Huffman(
return nullptr;
nVal |= nTmp;
- nBits++;
- for (IDI = 0; IDI < SBNUMSYMS; IDI++) {
+ ++nBits;
+ for (IDI = 0; IDI < SBNUMSYMS; ++IDI) {
if ((nBits == SBSYMCODES[IDI].codelen) &&
(nVal.ValueOrDie() == SBSYMCODES[IDI].code)) {
break;
@@ -95,7 +96,8 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::decode_Huffman(
bool RI = 0;
if (SBREFINE != 0 && pStream->read1Bit(&RI) != 0)
return nullptr;
- CJBig2_Image* IBI = nullptr;
+
+ CFX_MaybeOwned<CJBig2_Image> IBI;
if (RI == 0) {
IBI = SBSYMS[IDI];
} else {
@@ -119,8 +121,10 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::decode_Huffman(
uint32_t WOI = IBOI->width();
uint32_t HOI = IBOI->height();
- if ((int)(WOI + RDWI) < 0 || (int)(HOI + RDHI) < 0)
+ if (static_cast<int>(WOI + RDWI) < 0 ||
+ static_cast<int>(HOI + RDHI) < 0) {
return nullptr;
+ }
auto pGRRD = pdfium::MakeUnique<CJBig2_GRRDProc>();
pGRRD->GRW = WOI + RDWI;
@@ -136,16 +140,14 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::decode_Huffman(
pGRRD->GRAT[3] = SBRAT[3];
auto pArithDecoder = pdfium::MakeUnique<CJBig2_ArithDecoder>(pStream);
- IBI = pGRRD->decode(pArithDecoder.get(), grContext).release();
+ IBI = pGRRD->decode(pArithDecoder.get(), grContext);
if (!IBI)
return nullptr;
pStream->alignByte();
pStream->offset(2);
- if (static_cast<uint32_t>(HUFFRSIZE) != (pStream->getOffset() - nTmp)) {
- delete IBI;
+ if (static_cast<uint32_t>(HUFFRSIZE) != (pStream->getOffset() - nTmp))
return nullptr;
- }
}
if (!IBI)
continue;
@@ -163,37 +165,34 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::decode_Huffman(
if (TRANSPOSED == 0) {
switch (REFCORNER) {
case JBIG2_CORNER_TOPLEFT:
- SBREG->composeFrom(SI, TI, IBI, SBCOMBOP);
+ SBREG->composeFrom(SI, TI, IBI.Get(), SBCOMBOP);
break;
case JBIG2_CORNER_TOPRIGHT:
- SBREG->composeFrom(SI - WI + 1, TI, IBI, SBCOMBOP);
+ SBREG->composeFrom(SI - WI + 1, TI, IBI.Get(), SBCOMBOP);
break;
case JBIG2_CORNER_BOTTOMLEFT:
- SBREG->composeFrom(SI, TI - HI + 1, IBI, SBCOMBOP);
+ SBREG->composeFrom(SI, TI - HI + 1, IBI.Get(), SBCOMBOP);
break;
case JBIG2_CORNER_BOTTOMRIGHT:
- SBREG->composeFrom(SI - WI + 1, TI - HI + 1, IBI, SBCOMBOP);
+ SBREG->composeFrom(SI - WI + 1, TI - HI + 1, IBI.Get(), SBCOMBOP);
break;
}
} else {
switch (REFCORNER) {
case JBIG2_CORNER_TOPLEFT:
- SBREG->composeFrom(TI, SI, IBI, SBCOMBOP);
+ SBREG->composeFrom(TI, SI, IBI.Get(), SBCOMBOP);
break;
case JBIG2_CORNER_TOPRIGHT:
- SBREG->composeFrom(TI - WI + 1, SI, IBI, SBCOMBOP);
+ SBREG->composeFrom(TI - WI + 1, SI, IBI.Get(), SBCOMBOP);
break;
case JBIG2_CORNER_BOTTOMLEFT:
- SBREG->composeFrom(TI, SI - HI + 1, IBI, SBCOMBOP);
+ SBREG->composeFrom(TI, SI - HI + 1, IBI.Get(), SBCOMBOP);
break;
case JBIG2_CORNER_BOTTOMRIGHT:
- SBREG->composeFrom(TI - WI + 1, SI - HI + 1, IBI, SBCOMBOP);
+ SBREG->composeFrom(TI - WI + 1, SI - HI + 1, IBI.Get(), SBCOMBOP);
break;
}
}
- if (RI != 0) {
- delete IBI;
- }
if (TRANSPOSED == 0 && ((REFCORNER == JBIG2_CORNER_TOPLEFT) ||
(REFCORNER == JBIG2_CORNER_BOTTOMLEFT))) {
CURS = CURS + WI - 1;
@@ -211,26 +210,16 @@ std::unique_ptr<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;
+ CFX_MaybeOwned<CJBig2_ArithIntDecoder> pIADT;
+ CFX_MaybeOwned<CJBig2_ArithIntDecoder> pIAFS;
+ CFX_MaybeOwned<CJBig2_ArithIntDecoder> pIADS;
+ CFX_MaybeOwned<CJBig2_ArithIntDecoder> pIAIT;
+ CFX_MaybeOwned<CJBig2_ArithIntDecoder> pIARI;
+ CFX_MaybeOwned<CJBig2_ArithIntDecoder> pIARDW;
+ CFX_MaybeOwned<CJBig2_ArithIntDecoder> pIARDH;
+ CFX_MaybeOwned<CJBig2_ArithIntDecoder> pIARDX;
+ CFX_MaybeOwned<CJBig2_ArithIntDecoder> pIARDY;
+ CFX_MaybeOwned<CJBig2_ArithIaidDecoder> pIAID;
if (pIDS) {
pIADT = pIDS->IADT;
pIAFS = pIDS->IAFS;
@@ -243,32 +232,23 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::decode_Arith(
pIARDY = pIDS->IARDY;
pIAID = pIDS->IAID;
} else {
- IADT = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
- IAFS = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
- IADS = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
- IAIT = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
- IARI = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
- IARDW = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
- IARDH = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
- IARDX = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
- IARDY = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
- IAID = pdfium::MakeUnique<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();
+ pIADT = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
+ pIAFS = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
+ pIADS = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
+ pIAIT = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
+ pIARI = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
+ pIARDW = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
+ pIARDH = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
+ pIARDX = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
+ pIARDY = pdfium::MakeUnique<CJBig2_ArithIntDecoder>();
+ pIAID = pdfium::MakeUnique<CJBig2_ArithIaidDecoder>(SBSYMCODELEN);
}
auto SBREG = pdfium::MakeUnique<CJBig2_Image>(SBW, SBH);
SBREG->fill(SBDEFPIXEL);
int32_t STRIPT;
if (!pIADT->decode(pArithDecoder, &STRIPT))
return nullptr;
+
STRIPT *= SBSTRIPS;
STRIPT = -STRIPT;
int32_t FIRSTS = 0;
@@ -278,6 +258,7 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::decode_Arith(
int32_t DT;
if (!pIADT->decode(pArithDecoder, &DT))
return nullptr;
+
DT *= SBSTRIPS;
STRIPT += DT;
bool bFirst = true;
@@ -292,11 +273,12 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::decode_Arith(
int32_t IDS;
if (!pIADS->decode(pArithDecoder, &IDS))
break;
+
CURS += IDS + SBDSOFFSET;
}
- if (NINSTANCES >= SBNUMINSTANCES) {
+ if (NINSTANCES >= SBNUMINSTANCES)
break;
- }
+
int CURT = 0;
if (SBSTRIPS != 1)
pIAIT->decode(pArithDecoder, &CURT);
@@ -313,8 +295,7 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::decode_Arith(
else
pIARI->decode(pArithDecoder, &RI);
- std::unique_ptr<CJBig2_Image> IBI;
- CJBig2_Image* pIBI;
+ CFX_MaybeOwned<CJBig2_Image> pIBI;
if (RI == 0) {
pIBI = SBSYMS[IDI];
} else {
@@ -332,8 +313,10 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::decode_Arith(
uint32_t WOI = IBOI->width();
uint32_t HOI = IBOI->height();
- if ((int)(WOI + RDWI) < 0 || (int)(HOI + RDHI) < 0)
+ if (static_cast<int>(WOI + RDWI) < 0 ||
+ static_cast<int>(HOI + RDHI) < 0) {
return nullptr;
+ }
auto pGRRD = pdfium::MakeUnique<CJBig2_GRRDProc>();
pGRRD->GRW = WOI + RDWI;
@@ -347,8 +330,7 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::decode_Arith(
pGRRD->GRAT[1] = SBRAT[1];
pGRRD->GRAT[2] = SBRAT[2];
pGRRD->GRAT[3] = SBRAT[3];
- IBI = pGRRD->decode(pArithDecoder, grContext);
- pIBI = IBI.get();
+ pIBI = pGRRD->decode(pArithDecoder, grContext);
}
if (!pIBI)
return nullptr;
@@ -366,31 +348,31 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::decode_Arith(
if (TRANSPOSED == 0) {
switch (REFCORNER) {
case JBIG2_CORNER_TOPLEFT:
- SBREG->composeFrom(SI, TI, pIBI, SBCOMBOP);
+ SBREG->composeFrom(SI, TI, pIBI.Get(), SBCOMBOP);
break;
case JBIG2_CORNER_TOPRIGHT:
- SBREG->composeFrom(SI - WI + 1, TI, pIBI, SBCOMBOP);
+ SBREG->composeFrom(SI - WI + 1, TI, pIBI.Get(), SBCOMBOP);
break;
case JBIG2_CORNER_BOTTOMLEFT:
- SBREG->composeFrom(SI, TI - HI + 1, pIBI, SBCOMBOP);
+ SBREG->composeFrom(SI, TI - HI + 1, pIBI.Get(), SBCOMBOP);
break;
case JBIG2_CORNER_BOTTOMRIGHT:
- SBREG->composeFrom(SI - WI + 1, TI - HI + 1, pIBI, SBCOMBOP);
+ SBREG->composeFrom(SI - WI + 1, TI - HI + 1, pIBI.Get(), SBCOMBOP);
break;
}
} else {
switch (REFCORNER) {
case JBIG2_CORNER_TOPLEFT:
- SBREG->composeFrom(TI, SI, pIBI, SBCOMBOP);
+ SBREG->composeFrom(TI, SI, pIBI.Get(), SBCOMBOP);
break;
case JBIG2_CORNER_TOPRIGHT:
- SBREG->composeFrom(TI - WI + 1, SI, pIBI, SBCOMBOP);
+ SBREG->composeFrom(TI - WI + 1, SI, pIBI.Get(), SBCOMBOP);
break;
case JBIG2_CORNER_BOTTOMLEFT:
- SBREG->composeFrom(TI, SI - HI + 1, pIBI, SBCOMBOP);
+ SBREG->composeFrom(TI, SI - HI + 1, pIBI.Get(), SBCOMBOP);
break;
case JBIG2_CORNER_BOTTOMRIGHT:
- SBREG->composeFrom(TI - WI + 1, SI - HI + 1, pIBI, SBCOMBOP);
+ SBREG->composeFrom(TI - WI + 1, SI - HI + 1, pIBI.Get(), SBCOMBOP);
break;
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 02:04:53 +0000