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path: root/core/fxcodec/jbig2/JBig2_GrrdProc.cpp
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Diffstat (limited to 'core/fxcodec/jbig2/JBig2_GrrdProc.cpp')
-rw-r--r--core/fxcodec/jbig2/JBig2_GrrdProc.cpp143
1 files changed, 59 insertions, 84 deletions
diff --git a/core/fxcodec/jbig2/JBig2_GrrdProc.cpp b/core/fxcodec/jbig2/JBig2_GrrdProc.cpp
index 049e50a1a9..71bd8e53e4 100644
--- a/core/fxcodec/jbig2/JBig2_GrrdProc.cpp
+++ b/core/fxcodec/jbig2/JBig2_GrrdProc.cpp
@@ -45,71 +45,31 @@ std::unique_ptr<CJBig2_Image> CJBig2_GRRDProc::decode_Template0_unopt(
for (uint32_t h = 0; h < GRH; h++) {
if (TPGRON)
LTP = LTP ^ pArithDecoder->DECODE(&grContext[0x0010]);
+
+ uint32_t lines[5];
+ lines[0] = GRREG->getPixel(1, h - 1);
+ lines[0] |= GRREG->getPixel(0, h - 1) << 1;
+ lines[1] = 0;
+ lines[2] = GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY - 1);
+ lines[2] |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY - 1)
+ << 1;
+ lines[3] = GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY);
+ lines[3] |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY) << 1;
+ lines[3] |= GRREFERENCE->getPixel(-GRREFERENCEDX - 1, h - GRREFERENCEDY)
+ << 2;
+ lines[4] = GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY + 1);
+ lines[4] |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY + 1)
+ << 1;
+ lines[4] |= GRREFERENCE->getPixel(-GRREFERENCEDX - 1, h - GRREFERENCEDY + 1)
+ << 2;
if (!LTP) {
- uint32_t line1 = GRREG->getPixel(1, h - 1);
- line1 |= GRREG->getPixel(0, h - 1) << 1;
- uint32_t line2 = 0;
- uint32_t line3 =
- GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY - 1);
- line3 |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY - 1)
- << 1;
- uint32_t line4 =
- GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY);
- line4 |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY) << 1;
- line4 |= GRREFERENCE->getPixel(-GRREFERENCEDX - 1, h - GRREFERENCEDY)
- << 2;
- uint32_t line5 =
- GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY + 1);
- line5 |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY + 1)
- << 1;
- line5 |= GRREFERENCE->getPixel(-GRREFERENCEDX - 1, h - GRREFERENCEDY + 1)
- << 2;
for (uint32_t w = 0; w < GRW; w++) {
- uint32_t CONTEXT = line5;
- CONTEXT |= line4 << 3;
- CONTEXT |= line3 << 6;
- CONTEXT |= GRREFERENCE->getPixel(w - GRREFERENCEDX + GRAT[2],
- h - GRREFERENCEDY + GRAT[3])
- << 8;
- CONTEXT |= line2 << 9;
- CONTEXT |= line1 << 10;
- CONTEXT |= GRREG->getPixel(w + GRAT[0], h + GRAT[1]) << 12;
+ uint32_t CONTEXT =
+ decode_Template0_unopt_CalculateContext(*GRREG, lines, w, h);
int bVal = pArithDecoder->DECODE(&grContext[CONTEXT]);
- GRREG->setPixel(w, h, bVal);
- line1 = ((line1 << 1) | GRREG->getPixel(w + 2, h - 1)) & 0x03;
- line2 = ((line2 << 1) | bVal) & 0x01;
- line3 = ((line3 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 2,
- h - GRREFERENCEDY - 1)) &
- 0x03;
- line4 =
- ((line4 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 2, h - GRREFERENCEDY)) &
- 0x07;
- line5 = ((line5 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 2,
- h - GRREFERENCEDY + 1)) &
- 0x07;
+ decode_Template0_unopt_SetPixel(GRREG.get(), lines, w, h, bVal);
}
} else {
- uint32_t line1 = GRREG->getPixel(1, h - 1);
- line1 |= GRREG->getPixel(0, h - 1) << 1;
- uint32_t line2 = 0;
- uint32_t line3 =
- GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY - 1);
- line3 |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY - 1)
- << 1;
- uint32_t line4 =
- GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY);
- line4 |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY) << 1;
- line4 |= GRREFERENCE->getPixel(-GRREFERENCEDX - 1, h - GRREFERENCEDY)
- << 2;
- uint32_t line5 =
- GRREFERENCE->getPixel(-GRREFERENCEDX + 1, h - GRREFERENCEDY + 1);
- line5 |= GRREFERENCE->getPixel(-GRREFERENCEDX, h - GRREFERENCEDY + 1)
- << 1;
- line5 |= GRREFERENCE->getPixel(-GRREFERENCEDX - 1, h - GRREFERENCEDY + 1)
- << 2;
for (uint32_t w = 0; w < GRW; w++) {
int bVal = GRREFERENCE->getPixel(w, h);
if (!(TPGRON && (bVal == GRREFERENCE->getPixel(w - 1, h - 1)) &&
@@ -120,38 +80,53 @@ std::unique_ptr<CJBig2_Image> CJBig2_GRRDProc::decode_Template0_unopt(
(bVal == GRREFERENCE->getPixel(w - 1, h + 1)) &&
(bVal == GRREFERENCE->getPixel(w, h + 1)) &&
(bVal == GRREFERENCE->getPixel(w + 1, h + 1)))) {
- uint32_t CONTEXT = line5;
- CONTEXT |= line4 << 3;
- CONTEXT |= line3 << 6;
- CONTEXT |= GRREFERENCE->getPixel(w - GRREFERENCEDX + GRAT[2],
- h - GRREFERENCEDY + GRAT[3])
- << 8;
- CONTEXT |= line2 << 9;
- CONTEXT |= line1 << 10;
- CONTEXT |= GRREG->getPixel(w + GRAT[0], h + GRAT[1]) << 12;
+ uint32_t CONTEXT =
+ decode_Template0_unopt_CalculateContext(*GRREG, lines, w, h);
bVal = pArithDecoder->DECODE(&grContext[CONTEXT]);
}
- GRREG->setPixel(w, h, bVal);
- line1 = ((line1 << 1) | GRREG->getPixel(w + 2, h - 1)) & 0x03;
- line2 = ((line2 << 1) | bVal) & 0x01;
- line3 = ((line3 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 2,
- h - GRREFERENCEDY - 1)) &
- 0x03;
- line4 =
- ((line4 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 2, h - GRREFERENCEDY)) &
- 0x07;
- line5 = ((line5 << 1) |
- GRREFERENCE->getPixel(w - GRREFERENCEDX + 2,
- h - GRREFERENCEDY + 1)) &
- 0x07;
+ decode_Template0_unopt_SetPixel(GRREG.get(), lines, w, h, bVal);
}
}
}
return GRREG;
}
+uint32_t CJBig2_GRRDProc::decode_Template0_unopt_CalculateContext(
+ const CJBig2_Image& GRREG,
+ const uint32_t* lines,
+ uint32_t w,
+ uint32_t h) const {
+ uint32_t CONTEXT = lines[4];
+ CONTEXT |= lines[3] << 3;
+ CONTEXT |= lines[2] << 6;
+ CONTEXT |= GRREFERENCE->getPixel(w - GRREFERENCEDX + GRAT[2],
+ h - GRREFERENCEDY + GRAT[3])
+ << 8;
+ CONTEXT |= lines[1] << 9;
+ CONTEXT |= lines[0] << 10;
+ CONTEXT |= GRREG.getPixel(w + GRAT[0], h + GRAT[1]) << 12;
+ return CONTEXT;
+}
+
+void CJBig2_GRRDProc::decode_Template0_unopt_SetPixel(CJBig2_Image* GRREG,
+ uint32_t* lines,
+ uint32_t w,
+ uint32_t h,
+ int bVal) {
+ GRREG->setPixel(w, h, bVal);
+ lines[0] = ((lines[0] << 1) | GRREG->getPixel(w + 2, h - 1)) & 0x03;
+ lines[1] = ((lines[1] << 1) | bVal) & 0x01;
+ lines[2] = ((lines[2] << 1) | GRREFERENCE->getPixel(w - GRREFERENCEDX + 2,
+ h - GRREFERENCEDY - 1)) &
+ 0x03;
+ lines[3] = ((lines[3] << 1) |
+ GRREFERENCE->getPixel(w - GRREFERENCEDX + 2, h - GRREFERENCEDY)) &
+ 0x07;
+ lines[4] = ((lines[4] << 1) | GRREFERENCE->getPixel(w - GRREFERENCEDX + 2,
+ h - GRREFERENCEDY + 1)) &
+ 0x07;
+}
+
std::unique_ptr<CJBig2_Image> CJBig2_GRRDProc::decode_Template0_opt(
CJBig2_ArithDecoder* pArithDecoder,
JBig2ArithCtx* grContext) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-02 17:22:27 +0000