Stop inlining CJBig2_BitStream.
[pdfium.git] / core / src / fxcodec / jbig2 / JBig2_PddProc.cpp
1 // Copyright 2015 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "JBig2_PddProc.h"
8
9 #include "../../../../third_party/base/nonstd_unique_ptr.h"
10 #include "JBig2_GrdProc.h"
11 #include "JBig2_Image.h"
12 #include "JBig2_PatternDict.h"
13
14 CJBig2_PatternDict* CJBig2_PDDProc::decode_Arith(
15     CJBig2_ArithDecoder* pArithDecoder,
16     JBig2ArithCtx* gbContext,
17     IFX_Pause* pPause) {
18   FX_DWORD GRAY;
19   CJBig2_Image* BHDC = nullptr;
20   nonstd::unique_ptr<CJBig2_PatternDict> pDict(new CJBig2_PatternDict());
21   pDict->NUMPATS = GRAYMAX + 1;
22   pDict->HDPATS = FX_Alloc(CJBig2_Image*, pDict->NUMPATS);
23   JBIG2_memset(pDict->HDPATS, 0, sizeof(CJBig2_Image*) * pDict->NUMPATS);
24
25   nonstd::unique_ptr<CJBig2_GRDProc> pGRD(new CJBig2_GRDProc());
26   pGRD->MMR = HDMMR;
27   pGRD->GBW = (GRAYMAX + 1) * HDPW;
28   pGRD->GBH = HDPH;
29   pGRD->GBTEMPLATE = HDTEMPLATE;
30   pGRD->TPGDON = 0;
31   pGRD->USESKIP = 0;
32   pGRD->GBAT[0] = -(int32_t)HDPW;
33   pGRD->GBAT[1] = 0;
34   if (pGRD->GBTEMPLATE == 0) {
35     pGRD->GBAT[2] = -3;
36     pGRD->GBAT[3] = -1;
37     pGRD->GBAT[4] = 2;
38     pGRD->GBAT[5] = -2;
39     pGRD->GBAT[6] = -2;
40     pGRD->GBAT[7] = -2;
41   }
42   FXCODEC_STATUS status =
43       pGRD->Start_decode_Arith(&BHDC, pArithDecoder, gbContext, nullptr);
44   while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE) {
45     pGRD->Continue_decode(pPause);
46   }
47   if (!BHDC)
48     return nullptr;
49
50   GRAY = 0;
51   while (GRAY <= GRAYMAX) {
52     pDict->HDPATS[GRAY] = BHDC->subImage(HDPW * GRAY, 0, HDPW, HDPH);
53     GRAY = GRAY + 1;
54   }
55   delete BHDC;
56   return pDict.release();
57 }
58
59 CJBig2_PatternDict* CJBig2_PDDProc::decode_MMR(CJBig2_BitStream* pStream,
60                                                IFX_Pause* pPause) {
61   FX_DWORD GRAY;
62   CJBig2_Image* BHDC = nullptr;
63   nonstd::unique_ptr<CJBig2_PatternDict> pDict(new CJBig2_PatternDict());
64   pDict->NUMPATS = GRAYMAX + 1;
65   pDict->HDPATS = FX_Alloc(CJBig2_Image*, pDict->NUMPATS);
66   JBIG2_memset(pDict->HDPATS, 0, sizeof(CJBig2_Image*) * pDict->NUMPATS);
67
68   nonstd::unique_ptr<CJBig2_GRDProc> pGRD(new CJBig2_GRDProc());
69   pGRD->MMR = HDMMR;
70   pGRD->GBW = (GRAYMAX + 1) * HDPW;
71   pGRD->GBH = HDPH;
72   FXCODEC_STATUS status = pGRD->Start_decode_MMR(&BHDC, pStream, nullptr);
73   while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE) {
74     pGRD->Continue_decode(pPause);
75   }
76   if (!BHDC)
77     return nullptr;
78
79   GRAY = 0;
80   while (GRAY <= GRAYMAX) {
81     pDict->HDPATS[GRAY] = BHDC->subImage(HDPW * GRAY, 0, HDPW, HDPH);
82     GRAY = GRAY + 1;
83   }
84   delete BHDC;
85   return pDict.release();
86 }