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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 "JBig2_GsidProc.h" | 7 #include "JBig2_GsidProc.h" |
8 | 8 |
9 #include "../../../../third_party/base/nonstd_unique_ptr.h" | 9 #include "../../../../third_party/base/nonstd_unique_ptr.h" |
10 #include "../../../include/fxcrt/fx_basic.h" | 10 #include "../../../include/fxcrt/fx_basic.h" |
11 #include "JBig2_BitStream.h" | 11 #include "JBig2_BitStream.h" |
12 #include "JBig2_GrdProc.h" | 12 #include "JBig2_GrdProc.h" |
13 #include "JBig2_Image.h" | 13 #include "JBig2_Image.h" |
| 14 #include "JBig2_List.h" |
14 | 15 |
15 FX_DWORD* CJBig2_GSIDProc::decode_Arith(CJBig2_ArithDecoder* pArithDecoder, | 16 FX_DWORD* CJBig2_GSIDProc::decode_Arith(CJBig2_ArithDecoder* pArithDecoder, |
16 JBig2ArithCtx* gbContext, | 17 JBig2ArithCtx* gbContext, |
17 IFX_Pause* pPause) { | 18 IFX_Pause* pPause) { |
18 nonstd::unique_ptr<CJBig2_GRDProc> pGRD(new CJBig2_GRDProc()); | 19 nonstd::unique_ptr<CJBig2_GRDProc> pGRD(new CJBig2_GRDProc()); |
19 pGRD->MMR = GSMMR; | 20 pGRD->MMR = GSMMR; |
20 pGRD->GBW = GSW; | 21 pGRD->GBW = GSW; |
21 pGRD->GBH = GSH; | 22 pGRD->GBH = GSH; |
22 pGRD->GBTEMPLATE = GSTEMPLATE; | 23 pGRD->GBTEMPLATE = GSTEMPLATE; |
23 pGRD->TPGDON = 0; | 24 pGRD->TPGDON = 0; |
24 pGRD->USESKIP = GSUSESKIP; | 25 pGRD->USESKIP = GSUSESKIP; |
25 pGRD->SKIP = GSKIP; | 26 pGRD->SKIP = GSKIP; |
26 if (GSTEMPLATE <= 1) { | 27 if (GSTEMPLATE <= 1) { |
27 pGRD->GBAT[0] = 3; | 28 pGRD->GBAT[0] = 3; |
28 } else { | 29 } else { |
29 pGRD->GBAT[0] = 2; | 30 pGRD->GBAT[0] = 2; |
30 } | 31 } |
31 pGRD->GBAT[1] = -1; | 32 pGRD->GBAT[1] = -1; |
32 if (pGRD->GBTEMPLATE == 0) { | 33 if (pGRD->GBTEMPLATE == 0) { |
33 pGRD->GBAT[2] = -3; | 34 pGRD->GBAT[2] = -3; |
34 pGRD->GBAT[3] = -1; | 35 pGRD->GBAT[3] = -1; |
35 pGRD->GBAT[4] = 2; | 36 pGRD->GBAT[4] = 2; |
36 pGRD->GBAT[5] = -2; | 37 pGRD->GBAT[5] = -2; |
37 pGRD->GBAT[6] = -2; | 38 pGRD->GBAT[6] = -2; |
38 pGRD->GBAT[7] = -2; | 39 pGRD->GBAT[7] = -2; |
39 } | 40 } |
40 | 41 |
41 nonstd::unique_ptr<CJBig2_Image*, FxFreeDeleter> GSPLANES( | 42 CJBig2_List<CJBig2_Image> GSPLANES(GSBPP); |
42 FX_Alloc(CJBig2_Image*, GSBPP)); | 43 for (int32_t i = GSBPP - 1; i >= 0; --i) { |
43 JBIG2_memset(GSPLANES.get(), 0, sizeof(CJBig2_Image*) * GSBPP); | 44 CJBig2_Image* pImage = nullptr; |
44 FXCODEC_STATUS status = pGRD->Start_decode_Arith( | 45 FXCODEC_STATUS status = |
45 &GSPLANES.get()[GSBPP - 1], pArithDecoder, gbContext, nullptr); | 46 pGRD->Start_decode_Arith(&pImage, pArithDecoder, gbContext, nullptr); |
46 while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE) { | 47 while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE) |
47 pGRD->Continue_decode(pPause); | 48 pGRD->Continue_decode(pPause); |
48 } | |
49 if (!GSPLANES.get()[GSBPP - 1]) | |
50 return nullptr; | |
51 | 49 |
52 int32_t J = GSBPP - 2; | 50 if (!pImage) |
53 while (J >= 0) { | 51 return nullptr; |
54 FXCODEC_STATUS status = pGRD->Start_decode_Arith( | 52 |
55 &GSPLANES.get()[J], pArithDecoder, gbContext, nullptr); | 53 GSPLANES.set(i, pImage); |
56 while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE) { | 54 |
57 pGRD->Continue_decode(pPause); | 55 if (i < GSBPP - 1) |
58 } | 56 pImage->composeFrom(0, 0, GSPLANES.get(i + 1), JBIG2_COMPOSE_XOR); |
59 if (!GSPLANES.get()[J]) { | |
60 for (int32_t K = GSBPP - 1; K > J; --K) { | |
61 delete GSPLANES.get()[K]; | |
62 return nullptr; | |
63 } | |
64 } | |
65 GSPLANES.get()[J]->composeFrom(0, 0, GSPLANES.get()[J + 1], | |
66 JBIG2_COMPOSE_XOR); | |
67 J = J - 1; | |
68 } | 57 } |
69 nonstd::unique_ptr<FX_DWORD, FxFreeDeleter> GSVALS( | 58 nonstd::unique_ptr<FX_DWORD, FxFreeDeleter> GSVALS( |
70 FX_Alloc2D(FX_DWORD, GSW, GSH)); | 59 FX_Alloc2D(FX_DWORD, GSW, GSH)); |
71 JBIG2_memset(GSVALS.get(), 0, sizeof(FX_DWORD) * GSW * GSH); | 60 JBIG2_memset(GSVALS.get(), 0, sizeof(FX_DWORD) * GSW * GSH); |
72 for (FX_DWORD y = 0; y < GSH; ++y) { | 61 for (FX_DWORD y = 0; y < GSH; ++y) { |
73 for (FX_DWORD x = 0; x < GSW; ++x) { | 62 for (FX_DWORD x = 0; x < GSW; ++x) { |
74 for (J = 0; J < GSBPP; ++J) { | 63 for (int32_t i = 0; i < GSBPP; ++i) { |
75 GSVALS.get()[y * GSW + x] |= GSPLANES.get()[J]->getPixel(x, y) << J; | 64 GSVALS.get()[y * GSW + x] |= GSPLANES.get(i)->getPixel(x, y) << i; |
76 } | 65 } |
77 } | 66 } |
78 } | 67 } |
79 for (J = 0; J < GSBPP; ++J) { | |
80 delete GSPLANES.get()[J]; | |
81 } | |
82 return GSVALS.release(); | 68 return GSVALS.release(); |
83 } | 69 } |
84 | 70 |
85 FX_DWORD* CJBig2_GSIDProc::decode_MMR(CJBig2_BitStream* pStream, | 71 FX_DWORD* CJBig2_GSIDProc::decode_MMR(CJBig2_BitStream* pStream, |
86 IFX_Pause* pPause) { | 72 IFX_Pause* pPause) { |
87 nonstd::unique_ptr<CJBig2_GRDProc> pGRD(new CJBig2_GRDProc()); | 73 nonstd::unique_ptr<CJBig2_GRDProc> pGRD(new CJBig2_GRDProc()); |
88 pGRD->MMR = GSMMR; | 74 pGRD->MMR = GSMMR; |
89 pGRD->GBW = GSW; | 75 pGRD->GBW = GSW; |
90 pGRD->GBH = GSH; | 76 pGRD->GBH = GSH; |
91 | 77 |
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127 for (J = 0; J < GSBPP; ++J) { | 113 for (J = 0; J < GSBPP; ++J) { |
128 GSVALS.get()[y * GSW + x] |= GSPLANES.get()[J]->getPixel(x, y) << J; | 114 GSVALS.get()[y * GSW + x] |= GSPLANES.get()[J]->getPixel(x, y) << J; |
129 } | 115 } |
130 } | 116 } |
131 } | 117 } |
132 for (J = 0; J < GSBPP; ++J) { | 118 for (J = 0; J < GSBPP; ++J) { |
133 delete GSPLANES.get()[J]; | 119 delete GSPLANES.get()[J]; |
134 } | 120 } |
135 return GSVALS.release(); | 121 return GSVALS.release(); |
136 } | 122 } |
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