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1 // Copyright 2015 PDFium Authors. All rights reserved. | 1 // Copyright 2015 PDFium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
6 | 6 |
7 #include "core/fxcodec/jbig2/JBig2_GrrdProc.h" | 7 #include "core/fxcodec/jbig2/JBig2_GrrdProc.h" |
8 | 8 |
9 #include <memory> | 9 #include <memory> |
10 | 10 |
11 #include "core/fxcodec/jbig2/JBig2_ArithDecoder.h" | 11 #include "core/fxcodec/jbig2/JBig2_ArithDecoder.h" |
12 #include "core/fxcodec/jbig2/JBig2_BitStream.h" | 12 #include "core/fxcodec/jbig2/JBig2_BitStream.h" |
13 #include "core/fxcodec/jbig2/JBig2_Image.h" | 13 #include "core/fxcodec/jbig2/JBig2_Image.h" |
14 | 14 |
15 CJBig2_Image* CJBig2_GRRDProc::decode(CJBig2_ArithDecoder* pArithDecoder, | 15 CJBig2_Image* CJBig2_GRRDProc::decode(CJBig2_ArithDecoder* pArithDecoder, |
16 JBig2ArithCtx* grContext) { | 16 JBig2ArithCtx* grContext) { |
17 if (GRW == 0 || GRH == 0) | 17 if (GRW == 0 || GRH == 0) |
18 return new CJBig2_Image(GRW, GRH); | 18 return new CJBig2_Image(GRW, GRH); |
19 | 19 |
20 if (GRTEMPLATE == 0) { | 20 if (GRTEMPLATE == 0) { |
21 if ((GRAT[0] == -1) && (GRAT[1] == -1) && (GRAT[2] == -1) && | 21 if ((GRAT[0] == -1) && (GRAT[1] == -1) && (GRAT[2] == -1) && |
22 (GRAT[3] == -1) && (GRREFERENCEDX == 0) && | 22 (GRAT[3] == -1) && (GRREFERENCEDX == 0) && |
23 (GRW == (uint32_t)GRREFERENCE->m_nWidth)) { | 23 (GRW == (uint32_t)GRREFERENCE->width())) { |
24 return decode_Template0_opt(pArithDecoder, grContext); | 24 return decode_Template0_opt(pArithDecoder, grContext); |
25 } | 25 } |
26 return decode_Template0_unopt(pArithDecoder, grContext); | 26 return decode_Template0_unopt(pArithDecoder, grContext); |
27 } | 27 } |
28 | 28 |
29 if ((GRREFERENCEDX == 0) && (GRW == (uint32_t)GRREFERENCE->m_nWidth)) | 29 if ((GRREFERENCEDX == 0) && (GRW == (uint32_t)GRREFERENCE->width())) |
30 return decode_Template1_opt(pArithDecoder, grContext); | 30 return decode_Template1_opt(pArithDecoder, grContext); |
31 return decode_Template1_unopt(pArithDecoder, grContext); | 31 return decode_Template1_unopt(pArithDecoder, grContext); |
32 } | 32 } |
33 | 33 |
34 CJBig2_Image* CJBig2_GRRDProc::decode_Template0_unopt( | 34 CJBig2_Image* CJBig2_GRRDProc::decode_Template0_unopt( |
35 CJBig2_ArithDecoder* pArithDecoder, | 35 CJBig2_ArithDecoder* pArithDecoder, |
36 JBig2ArithCtx* grContext) { | 36 JBig2ArithCtx* grContext) { |
37 FX_BOOL LTP = FALSE; | 37 FX_BOOL LTP = FALSE; |
38 std::unique_ptr<CJBig2_Image> GRREG(new CJBig2_Image(GRW, GRH)); | 38 std::unique_ptr<CJBig2_Image> GRREG(new CJBig2_Image(GRW, GRH)); |
39 GRREG->fill(0); | 39 GRREG->fill(0); |
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155 | 155 |
156 int32_t iGRW = static_cast<int32_t>(GRW); | 156 int32_t iGRW = static_cast<int32_t>(GRW); |
157 int32_t iGRH = static_cast<int32_t>(GRH); | 157 int32_t iGRH = static_cast<int32_t>(GRH); |
158 std::unique_ptr<CJBig2_Image> GRREG(new CJBig2_Image(iGRW, iGRH)); | 158 std::unique_ptr<CJBig2_Image> GRREG(new CJBig2_Image(iGRW, iGRH)); |
159 if (!GRREG->m_pData) | 159 if (!GRREG->m_pData) |
160 return nullptr; | 160 return nullptr; |
161 | 161 |
162 FX_BOOL LTP = FALSE; | 162 FX_BOOL LTP = FALSE; |
163 uint8_t* pLine = GRREG->m_pData; | 163 uint8_t* pLine = GRREG->m_pData; |
164 uint8_t* pLineR = GRREFERENCE->m_pData; | 164 uint8_t* pLineR = GRREFERENCE->m_pData; |
165 intptr_t nStride = GRREG->m_nStride; | 165 intptr_t nStride = GRREG->stride(); |
166 intptr_t nStrideR = GRREFERENCE->m_nStride; | 166 intptr_t nStrideR = GRREFERENCE->stride(); |
167 int32_t GRWR = GRREFERENCE->m_nWidth; | 167 int32_t GRWR = GRREFERENCE->width(); |
168 int32_t GRHR = GRREFERENCE->m_nHeight; | 168 int32_t GRHR = GRREFERENCE->height(); |
169 if (GRREFERENCEDY < -GRHR + 1 || GRREFERENCEDY > GRHR - 1) | 169 if (GRREFERENCEDY < -GRHR + 1 || GRREFERENCEDY > GRHR - 1) |
170 GRREFERENCEDY = 0; | 170 GRREFERENCEDY = 0; |
171 intptr_t nOffset = -GRREFERENCEDY * nStrideR; | 171 intptr_t nOffset = -GRREFERENCEDY * nStrideR; |
172 for (int32_t h = 0; h < iGRH; h++) { | 172 for (int32_t h = 0; h < iGRH; h++) { |
173 if (TPGRON) | 173 if (TPGRON) |
174 LTP = LTP ^ pArithDecoder->DECODE(&grContext[0x0010]); | 174 LTP = LTP ^ pArithDecoder->DECODE(&grContext[0x0010]); |
175 uint32_t line1 = (h > 0) ? pLine[-nStride] << 4 : 0; | 175 uint32_t line1 = (h > 0) ? pLine[-nStride] << 4 : 0; |
176 int32_t reference_h = h - GRREFERENCEDY; | 176 int32_t reference_h = h - GRREFERENCEDY; |
177 FX_BOOL line1_r_ok = (reference_h > 0 && reference_h < GRHR + 1); | 177 FX_BOOL line1_r_ok = (reference_h > 0 && reference_h < GRHR + 1); |
178 FX_BOOL line2_r_ok = (reference_h > -1 && reference_h < GRHR); | 178 FX_BOOL line2_r_ok = (reference_h > -1 && reference_h < GRHR); |
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389 | 389 |
390 int32_t iGRW = static_cast<int32_t>(GRW); | 390 int32_t iGRW = static_cast<int32_t>(GRW); |
391 int32_t iGRH = static_cast<int32_t>(GRH); | 391 int32_t iGRH = static_cast<int32_t>(GRH); |
392 std::unique_ptr<CJBig2_Image> GRREG(new CJBig2_Image(iGRW, iGRH)); | 392 std::unique_ptr<CJBig2_Image> GRREG(new CJBig2_Image(iGRW, iGRH)); |
393 if (!GRREG->m_pData) | 393 if (!GRREG->m_pData) |
394 return nullptr; | 394 return nullptr; |
395 | 395 |
396 FX_BOOL LTP = FALSE; | 396 FX_BOOL LTP = FALSE; |
397 uint8_t* pLine = GRREG->m_pData; | 397 uint8_t* pLine = GRREG->m_pData; |
398 uint8_t* pLineR = GRREFERENCE->m_pData; | 398 uint8_t* pLineR = GRREFERENCE->m_pData; |
399 intptr_t nStride = GRREG->m_nStride; | 399 intptr_t nStride = GRREG->stride(); |
400 intptr_t nStrideR = GRREFERENCE->m_nStride; | 400 intptr_t nStrideR = GRREFERENCE->stride(); |
401 int32_t GRWR = GRREFERENCE->m_nWidth; | 401 int32_t GRWR = GRREFERENCE->width(); |
402 int32_t GRHR = GRREFERENCE->m_nHeight; | 402 int32_t GRHR = GRREFERENCE->height(); |
403 if (GRREFERENCEDY < -GRHR + 1 || GRREFERENCEDY > GRHR - 1) { | 403 if (GRREFERENCEDY < -GRHR + 1 || GRREFERENCEDY > GRHR - 1) { |
404 GRREFERENCEDY = 0; | 404 GRREFERENCEDY = 0; |
405 } | 405 } |
406 intptr_t nOffset = -GRREFERENCEDY * nStrideR; | 406 intptr_t nOffset = -GRREFERENCEDY * nStrideR; |
407 for (int32_t h = 0; h < iGRH; h++) { | 407 for (int32_t h = 0; h < iGRH; h++) { |
408 if (TPGRON) | 408 if (TPGRON) |
409 LTP = LTP ^ pArithDecoder->DECODE(&grContext[0x0008]); | 409 LTP = LTP ^ pArithDecoder->DECODE(&grContext[0x0008]); |
410 uint32_t line1 = (h > 0) ? pLine[-nStride] << 1 : 0; | 410 uint32_t line1 = (h > 0) ? pLine[-nStride] << 1 : 0; |
411 int32_t reference_h = h - GRREFERENCEDY; | 411 int32_t reference_h = h - GRREFERENCEDY; |
412 FX_BOOL line1_r_ok = (reference_h > 0 && reference_h < GRHR + 1); | 412 FX_BOOL line1_r_ok = (reference_h > 0 && reference_h < GRHR + 1); |
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494 pLine[w >> 3] = cVal; | 494 pLine[w >> 3] = cVal; |
495 } | 495 } |
496 } | 496 } |
497 pLine += nStride; | 497 pLine += nStride; |
498 if (h < GRHR + GRREFERENCEDY) { | 498 if (h < GRHR + GRREFERENCEDY) { |
499 pLineR += nStrideR; | 499 pLineR += nStrideR; |
500 } | 500 } |
501 } | 501 } |
502 return GRREG.release(); | 502 return GRREG.release(); |
503 } | 503 } |
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