diff options
Diffstat (limited to 'core/fxcodec/jbig2/JBig2_TrdProc.cpp')
| -rw-r--r-- | core/fxcodec/jbig2/JBig2_TrdProc.cpp | 137 |
1 files changed, 60 insertions, 77 deletions
diff --git a/core/fxcodec/jbig2/JBig2_TrdProc.cpp b/core/fxcodec/jbig2/JBig2_TrdProc.cpp index 258014ab10..474b3ccdf2 100644 --- a/core/fxcodec/jbig2/JBig2_TrdProc.cpp +++ b/core/fxcodec/jbig2/JBig2_TrdProc.cpp @@ -179,45 +179,11 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::DecodeHuffman( return nullptr; int32_t SI = CURS.ValueOrDie(); - if (TRANSPOSED == 0) { - switch (REFCORNER) { - case JBIG2_CORNER_TOPLEFT: - SBREG->ComposeFrom(SI, TI, IBI.Get(), SBCOMBOP); - break; - case JBIG2_CORNER_TOPRIGHT: - SBREG->ComposeFrom(SI - WI + 1, TI, IBI.Get(), SBCOMBOP); - break; - case JBIG2_CORNER_BOTTOMLEFT: - SBREG->ComposeFrom(SI, TI - HI + 1, IBI.Get(), SBCOMBOP); - break; - case JBIG2_CORNER_BOTTOMRIGHT: - SBREG->ComposeFrom(SI - WI + 1, TI - HI + 1, IBI.Get(), SBCOMBOP); - break; - } - } else { - switch (REFCORNER) { - case JBIG2_CORNER_TOPLEFT: - SBREG->ComposeFrom(TI, SI, IBI.Get(), SBCOMBOP); - break; - case JBIG2_CORNER_TOPRIGHT: - SBREG->ComposeFrom(TI - WI + 1, SI, IBI.Get(), SBCOMBOP); - break; - case JBIG2_CORNER_BOTTOMLEFT: - SBREG->ComposeFrom(TI, SI - HI + 1, IBI.Get(), SBCOMBOP); - break; - case JBIG2_CORNER_BOTTOMRIGHT: - SBREG->ComposeFrom(TI - WI + 1, SI - HI + 1, IBI.Get(), 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 = NINSTANCES + 1; + ComposeData compose = GetComposeData(SI, TI, WI, HI); + SBREG->ComposeFrom(compose.x, compose.y, IBI.Get(), SBCOMBOP); + if (compose.increment) + CURS += compose.increment; + ++NINSTANCES; } } return SBREG; @@ -379,46 +345,63 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::DecodeArith( return nullptr; int32_t SI = CURS.ValueOrDie(); - if (TRANSPOSED == 0) { - switch (REFCORNER) { - case JBIG2_CORNER_TOPLEFT: - SBREG->ComposeFrom(SI, TI, pIBI.Get(), SBCOMBOP); - break; - case JBIG2_CORNER_TOPRIGHT: - SBREG->ComposeFrom(SI - WI + 1, TI, pIBI.Get(), SBCOMBOP); - break; - case JBIG2_CORNER_BOTTOMLEFT: - SBREG->ComposeFrom(SI, TI - HI + 1, pIBI.Get(), SBCOMBOP); - break; - case JBIG2_CORNER_BOTTOMRIGHT: - SBREG->ComposeFrom(SI - WI + 1, TI - HI + 1, pIBI.Get(), SBCOMBOP); - break; - } - } else { - switch (REFCORNER) { - case JBIG2_CORNER_TOPLEFT: - SBREG->ComposeFrom(TI, SI, pIBI.Get(), SBCOMBOP); - break; - case JBIG2_CORNER_TOPRIGHT: - SBREG->ComposeFrom(TI - WI + 1, SI, pIBI.Get(), SBCOMBOP); - break; - case JBIG2_CORNER_BOTTOMLEFT: - SBREG->ComposeFrom(TI, SI - HI + 1, pIBI.Get(), SBCOMBOP); - break; - case JBIG2_CORNER_BOTTOMRIGHT: - SBREG->ComposeFrom(TI - WI + 1, SI - HI + 1, pIBI.Get(), 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; - } + ComposeData compose = GetComposeData(SI, TI, WI, HI); + SBREG->ComposeFrom(compose.x, compose.y, pIBI.Get(), SBCOMBOP); + if (compose.increment) + CURS += compose.increment; ++NINSTANCES; } } return SBREG; } + +CJBig2_TRDProc::ComposeData CJBig2_TRDProc::GetComposeData(int32_t SI, + int32_t TI, + uint32_t WI, + uint32_t HI) const { + ComposeData results; + if (TRANSPOSED == 0) { + switch (REFCORNER) { + case JBIG2_CORNER_TOPLEFT: + results.x = SI; + results.y = TI; + results.increment = WI - 1; + break; + case JBIG2_CORNER_TOPRIGHT: + results.x = SI - WI + 1; + results.y = TI; + break; + case JBIG2_CORNER_BOTTOMLEFT: + results.x = SI; + results.y = TI - HI + 1; + results.increment = WI - 1; + break; + case JBIG2_CORNER_BOTTOMRIGHT: + results.x = SI - WI + 1; + results.y = TI - HI + 1; + break; + } + } else { + switch (REFCORNER) { + case JBIG2_CORNER_TOPLEFT: + results.x = TI; + results.y = SI; + results.increment = HI - 1; + break; + case JBIG2_CORNER_TOPRIGHT: + results.x = TI - WI + 1; + results.y = SI; + results.increment = HI - 1; + break; + case JBIG2_CORNER_BOTTOMLEFT: + results.x = TI; + results.y = SI - HI + 1; + break; + case JBIG2_CORNER_BOTTOMRIGHT: + results.x = TI - WI + 1; + results.y = SI - HI + 1; + break; + } + } + return results; +} |