From 649a0efe74b6e8a6032289a66478d9bb8fb7f285 Mon Sep 17 00:00:00 2001 From: Lei Zhang Date: Thu, 18 Feb 2016 14:27:10 -0800 Subject: Remove gotos in CJBig2_TRDProc. R=tsepez@chromium.org Review URL: https://codereview.chromium.org/1708413002 . --- core/src/fxcodec/jbig2/JBig2_Context.cpp | 2 +- core/src/fxcodec/jbig2/JBig2_TrdProc.cpp | 222 +++++++++++++++---------------- core/src/fxcodec/jbig2/JBig2_TrdProc.h | 2 +- 3 files changed, 110 insertions(+), 116 deletions(-) (limited to 'core') diff --git a/core/src/fxcodec/jbig2/JBig2_Context.cpp b/core/src/fxcodec/jbig2/JBig2_Context.cpp index 566b84e54d..958c4a63e2 100644 --- a/core/src/fxcodec/jbig2/JBig2_Context.cpp +++ b/core/src/fxcodec/jbig2/JBig2_Context.cpp @@ -940,7 +940,7 @@ int32_t CJBig2_Context::parseTextRegion(CJBig2_Segment* pSegment) { new CJBig2_ArithDecoder(m_pStream.get())); pSegment->m_nResultType = JBIG2_IMAGE_POINTER; pSegment->m_Result.im = - pTRD->decode_Arith(pArithDecoder.get(), grContext.get()); + pTRD->decode_Arith(pArithDecoder.get(), grContext.get(), nullptr); if (!pSegment->m_Result.im) return JBIG2_ERROR_FATAL; m_pStream->alignByte(); diff --git a/core/src/fxcodec/jbig2/JBig2_TrdProc.cpp b/core/src/fxcodec/jbig2/JBig2_TrdProc.cpp index 963c7b1f76..aa9ca59893 100644 --- a/core/src/fxcodec/jbig2/JBig2_TrdProc.cpp +++ b/core/src/fxcodec/jbig2/JBig2_TrdProc.cpp @@ -215,103 +215,124 @@ CJBig2_Image* CJBig2_TRDProc::decode_Huffman(CJBig2_BitStream* pStream, CJBig2_Image* CJBig2_TRDProc::decode_Arith(CJBig2_ArithDecoder* pArithDecoder, JBig2ArithCtx* grContext, JBig2IntDecoderState* pIDS) { - 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; - int RI; - int32_t RDWI, RDHI, RDXI, RDYI; - CJBig2_Image* IBOI; - FX_DWORD WOI, HOI; - FX_BOOL bFirst; - int32_t bRetained; - CJBig2_ArithIntDecoder* IADT, *IAFS, *IADS, *IAIT, *IARI, *IARDW, *IARDH, - *IARDX, *IARDY; - CJBig2_ArithIaidDecoder* IAID; + std::unique_ptr IADT; + std::unique_ptr IAFS; + std::unique_ptr IADS; + std::unique_ptr IAIT; + std::unique_ptr IARI; + std::unique_ptr IARDW; + std::unique_ptr IARDH; + std::unique_ptr IARDX; + std::unique_ptr IARDY; + std::unique_ptr 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) { - IADT = pIDS->IADT; - IAFS = pIDS->IAFS; - IADS = pIDS->IADS; - IAIT = pIDS->IAIT; - IARI = pIDS->IARI; - IARDW = pIDS->IARDW; - IARDH = pIDS->IARDH; - IARDX = pIDS->IARDX; - IARDY = pIDS->IARDY; - IAID = pIDS->IAID; - bRetained = TRUE; + 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 = new CJBig2_ArithIntDecoder(); - IAFS = new CJBig2_ArithIntDecoder(); - IADS = new CJBig2_ArithIntDecoder(); - IAIT = new CJBig2_ArithIntDecoder(); - IARI = new CJBig2_ArithIntDecoder(); - IARDW = new CJBig2_ArithIntDecoder(); - IARDH = new CJBig2_ArithIntDecoder(); - IARDX = new CJBig2_ArithIntDecoder(); - IARDY = new CJBig2_ArithIntDecoder(); - IAID = new CJBig2_ArithIaidDecoder(SBSYMCODELEN); - bRetained = FALSE; + 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 SBREG(new CJBig2_Image(SBW, SBH)); SBREG->fill(SBDEFPIXEL); - IADT->decode(pArithDecoder, &STRIPT); + int32_t STRIPT; + pIADT->decode(pArithDecoder, &STRIPT); STRIPT *= SBSTRIPS; STRIPT = -STRIPT; - FIRSTS = 0; - NINSTANCES = 0; + int32_t FIRSTS = 0; + FX_DWORD NINSTANCES = 0; while (NINSTANCES < SBNUMINSTANCES) { - IADT->decode(pArithDecoder, &DT); + int32_t CURS; + int32_t DT; + pIADT->decode(pArithDecoder, &DT); DT *= SBSTRIPS; - STRIPT = STRIPT + DT; - bFirst = TRUE; + STRIPT += DT; + bool bFirst = true; for (;;) { if (bFirst) { - IAFS->decode(pArithDecoder, &DFS); - FIRSTS = FIRSTS + DFS; + int32_t DFS; + pIAFS->decode(pArithDecoder, &DFS); + FIRSTS += DFS; CURS = FIRSTS; - bFirst = FALSE; + bFirst = false; } else { - if (!IADS->decode(pArithDecoder, &IDS)) + int32_t IDS; + if (!pIADS->decode(pArithDecoder, &IDS)) break; - CURS = CURS + IDS + SBDSOFFSET; + CURS += IDS + SBDSOFFSET; } if (NINSTANCES >= SBNUMINSTANCES) { break; } int CURT = 0; if (SBSTRIPS != 1) - IAIT->decode(pArithDecoder, &CURT); + pIAIT->decode(pArithDecoder, &CURT); - TI = STRIPT + CURT; + int32_t TI = STRIPT + CURT; FX_DWORD IDI; - IAID->decode(pArithDecoder, &IDI); + pIAID->decode(pArithDecoder, &IDI); if (IDI >= SBNUMSYMS) - goto failed; + return nullptr; + int RI; if (SBREFINE == 0) RI = 0; else - IARI->decode(pArithDecoder, &RI); - - if (!SBSYMS[IDI]) - goto failed; + pIARI->decode(pArithDecoder, &RI); + std::unique_ptr IBI; + CJBig2_Image* pIBI; if (RI == 0) { - IBI = SBSYMS[IDI]; + pIBI = SBSYMS[IDI]; } else { - IARDW->decode(pArithDecoder, &RDWI); - IARDH->decode(pArithDecoder, &RDHI); - IARDX->decode(pArithDecoder, &RDXI); - IARDY->decode(pArithDecoder, &RDYI); - IBOI = SBSYMS[IDI]; - WOI = IBOI->m_nWidth; - HOI = IBOI->m_nHeight; + 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) { - goto failed; + return nullptr; } std::unique_ptr pGRRD(new CJBig2_GRRDProc()); pGRRD->GRW = WOI + RDWI; @@ -325,89 +346,62 @@ CJBig2_Image* CJBig2_TRDProc::decode_Arith(CJBig2_ArithDecoder* pArithDecoder, pGRRD->GRAT[1] = SBRAT[1]; pGRRD->GRAT[2] = SBRAT[2]; pGRRD->GRAT[3] = SBRAT[3]; - IBI = pGRRD->decode(pArithDecoder, grContext); - if (!IBI) - goto failed; + IBI.reset(pGRRD->decode(pArithDecoder, grContext)); + pIBI = IBI.get(); } - WI = IBI->m_nWidth; - HI = IBI->m_nHeight; + 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 = CURS + WI - 1; + CURS += WI - 1; } else if (TRANSPOSED == 1 && ((REFCORNER == JBIG2_CORNER_BOTTOMLEFT) || (REFCORNER == JBIG2_CORNER_BOTTOMRIGHT))) { - CURS = CURS + HI - 1; + CURS += HI - 1; } - SI = CURS; + int32_t SI = CURS; if (TRANSPOSED == 0) { switch (REFCORNER) { case JBIG2_CORNER_TOPLEFT: - SBREG->composeFrom(SI, TI, IBI, SBCOMBOP); + SBREG->composeFrom(SI, TI, pIBI, SBCOMBOP); break; case JBIG2_CORNER_TOPRIGHT: - SBREG->composeFrom(SI - WI + 1, TI, IBI, SBCOMBOP); + SBREG->composeFrom(SI - WI + 1, TI, pIBI, SBCOMBOP); break; case JBIG2_CORNER_BOTTOMLEFT: - SBREG->composeFrom(SI, TI - HI + 1, IBI, SBCOMBOP); + SBREG->composeFrom(SI, TI - HI + 1, pIBI, SBCOMBOP); break; case JBIG2_CORNER_BOTTOMRIGHT: - SBREG->composeFrom(SI - WI + 1, TI - HI + 1, IBI, SBCOMBOP); + SBREG->composeFrom(SI - WI + 1, TI - HI + 1, pIBI, SBCOMBOP); break; } } else { switch (REFCORNER) { case JBIG2_CORNER_TOPLEFT: - SBREG->composeFrom(TI, SI, IBI, SBCOMBOP); + SBREG->composeFrom(TI, SI, pIBI, SBCOMBOP); break; case JBIG2_CORNER_TOPRIGHT: - SBREG->composeFrom(TI - WI + 1, SI, IBI, SBCOMBOP); + SBREG->composeFrom(TI - WI + 1, SI, pIBI, SBCOMBOP); break; case JBIG2_CORNER_BOTTOMLEFT: - SBREG->composeFrom(TI, SI - HI + 1, IBI, SBCOMBOP); + SBREG->composeFrom(TI, SI - HI + 1, pIBI, SBCOMBOP); break; case JBIG2_CORNER_BOTTOMRIGHT: - SBREG->composeFrom(TI - WI + 1, SI - HI + 1, IBI, SBCOMBOP); + SBREG->composeFrom(TI - WI + 1, SI - HI + 1, pIBI, SBCOMBOP); break; } } - if (RI != 0) { - delete IBI; - } if (TRANSPOSED == 0 && ((REFCORNER == JBIG2_CORNER_TOPLEFT) || (REFCORNER == JBIG2_CORNER_BOTTOMLEFT))) { - CURS = CURS + WI - 1; + CURS += WI - 1; } else if (TRANSPOSED == 1 && ((REFCORNER == JBIG2_CORNER_TOPLEFT) || (REFCORNER == JBIG2_CORNER_TOPRIGHT))) { - CURS = CURS + HI - 1; + CURS += HI - 1; } - NINSTANCES = NINSTANCES + 1; + ++NINSTANCES; } } - if (bRetained == FALSE) { - delete IADT; - delete IAFS; - delete IADS; - delete IAIT; - delete IARI; - delete IARDW; - delete IARDH; - delete IARDX; - delete IARDY; - delete IAID; - } return SBREG.release(); -failed: - if (bRetained == FALSE) { - delete IADT; - delete IAFS; - delete IADS; - delete IAIT; - delete IARI; - delete IARDW; - delete IARDH; - delete IARDX; - delete IARDY; - delete IAID; - } - return nullptr; } diff --git a/core/src/fxcodec/jbig2/JBig2_TrdProc.h b/core/src/fxcodec/jbig2/JBig2_TrdProc.h index 423b42f758..e36b269ba6 100644 --- a/core/src/fxcodec/jbig2/JBig2_TrdProc.h +++ b/core/src/fxcodec/jbig2/JBig2_TrdProc.h @@ -45,7 +45,7 @@ class CJBig2_TRDProc { CJBig2_Image* decode_Arith(CJBig2_ArithDecoder* pArithDecoder, JBig2ArithCtx* grContext, - JBig2IntDecoderState* pIDS = NULL); + JBig2IntDecoderState* pIDS); public: FX_BOOL SBHUFF; -- cgit v1.2.3