1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
// Copyright 2016 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "core/fpdfapi/render/cpdf_imagecacheentry.h"
#include <memory>
#include <utility>
#include "core/fpdfapi/page/cpdf_page.h"
#include "core/fpdfapi/parser/cpdf_dictionary.h"
#include "core/fpdfapi/parser/cpdf_document.h"
#include "core/fpdfapi/parser/cpdf_stream.h"
#include "core/fpdfapi/render/cpdf_dibsource.h"
#include "core/fpdfapi/render/cpdf_pagerendercache.h"
#include "core/fpdfapi/render/cpdf_rendercontext.h"
#include "core/fpdfapi/render/cpdf_renderstatus.h"
CPDF_ImageCacheEntry::CPDF_ImageCacheEntry(CPDF_Document* pDoc,
CPDF_Stream* pStream)
: m_dwTimeCount(0),
m_MatteColor(0),
m_pRenderStatus(nullptr),
m_pDocument(pDoc),
m_pStream(pStream),
m_pCurBitmap(nullptr),
m_pCurMask(nullptr),
m_dwCacheSize(0) {}
CPDF_ImageCacheEntry::~CPDF_ImageCacheEntry() {}
void CPDF_ImageCacheEntry::Reset(const CFX_DIBitmap* pBitmap) {
m_pCachedBitmap.reset();
if (pBitmap)
m_pCachedBitmap = pBitmap->Clone();
CalcSize();
}
static uint32_t FPDF_ImageCache_EstimateImageSize(const CFX_DIBSource* pDIB) {
return pDIB && pDIB->GetBuffer()
? (uint32_t)pDIB->GetHeight() * pDIB->GetPitch() +
(uint32_t)pDIB->GetPaletteSize() * 4
: 0;
}
bool CPDF_ImageCacheEntry::GetCachedBitmap(CFX_DIBSource*& pBitmap,
CFX_DIBSource*& pMask,
uint32_t& MatteColor,
CPDF_Dictionary* pPageResources,
bool bStdCS,
uint32_t GroupFamily,
bool bLoadMask,
CPDF_RenderStatus* pRenderStatus,
int32_t downsampleWidth,
int32_t downsampleHeight) {
if (m_pCachedBitmap) {
pBitmap = m_pCachedBitmap.get();
pMask = m_pCachedMask.get();
MatteColor = m_MatteColor;
return true;
}
if (!pRenderStatus)
return false;
CPDF_RenderContext* pContext = pRenderStatus->GetContext();
CPDF_PageRenderCache* pPageRenderCache = pContext->GetPageCache();
m_dwTimeCount = pPageRenderCache->GetTimeCount();
std::unique_ptr<CPDF_DIBSource> pSrc = pdfium::MakeUnique<CPDF_DIBSource>();
CPDF_DIBSource* pMaskSrc = nullptr;
if (!pSrc->Load(m_pDocument, m_pStream, &pMaskSrc, &MatteColor,
pRenderStatus->m_pFormResource, pPageResources, bStdCS,
GroupFamily, bLoadMask)) {
pBitmap = nullptr;
return false;
}
m_MatteColor = MatteColor;
m_pCachedBitmap = std::move(pSrc);
if (pMaskSrc)
m_pCachedMask = pdfium::WrapUnique<CFX_DIBSource>(pMaskSrc);
pBitmap = m_pCachedBitmap.get();
pMask = m_pCachedMask.get();
CalcSize();
return false;
}
CFX_DIBSource* CPDF_ImageCacheEntry::DetachBitmap() {
CFX_DIBSource* pDIBSource = m_pCurBitmap;
m_pCurBitmap = nullptr;
return pDIBSource;
}
CFX_DIBSource* CPDF_ImageCacheEntry::DetachMask() {
CFX_DIBSource* pDIBSource = m_pCurMask;
m_pCurMask = nullptr;
return pDIBSource;
}
int CPDF_ImageCacheEntry::StartGetCachedBitmap(CPDF_Dictionary* pFormResources,
CPDF_Dictionary* pPageResources,
bool bStdCS,
uint32_t GroupFamily,
bool bLoadMask,
CPDF_RenderStatus* pRenderStatus,
int32_t downsampleWidth,
int32_t downsampleHeight) {
if (m_pCachedBitmap) {
m_pCurBitmap = m_pCachedBitmap.get();
m_pCurMask = m_pCachedMask.get();
return 1;
}
if (!pRenderStatus)
return 0;
m_pRenderStatus = pRenderStatus;
m_pCurBitmap = new CPDF_DIBSource;
int ret =
((CPDF_DIBSource*)m_pCurBitmap)
->StartLoadDIBSource(m_pDocument, m_pStream, true, pFormResources,
pPageResources, bStdCS, GroupFamily, bLoadMask);
if (ret == 2)
return ret;
if (!ret) {
delete m_pCurBitmap;
m_pCurBitmap = nullptr;
return 0;
}
ContinueGetCachedBitmap();
return 0;
}
void CPDF_ImageCacheEntry::ContinueGetCachedBitmap() {
m_MatteColor = ((CPDF_DIBSource*)m_pCurBitmap)->GetMatteColor();
m_pCurMask = ((CPDF_DIBSource*)m_pCurBitmap)->DetachMask();
CPDF_RenderContext* pContext = m_pRenderStatus->GetContext();
CPDF_PageRenderCache* pPageRenderCache = pContext->GetPageCache();
m_dwTimeCount = pPageRenderCache->GetTimeCount();
m_pCachedBitmap = pdfium::WrapUnique<CFX_DIBSource>(m_pCurBitmap);
if (m_pCurMask)
m_pCachedMask = pdfium::WrapUnique<CFX_DIBSource>(m_pCurMask);
else
m_pCurMask = m_pCachedMask.get();
CalcSize();
}
int CPDF_ImageCacheEntry::Continue(IFX_Pause* pPause) {
int ret = ((CPDF_DIBSource*)m_pCurBitmap)->ContinueLoadDIBSource(pPause);
if (ret == 2)
return ret;
if (!ret) {
delete m_pCurBitmap;
m_pCurBitmap = nullptr;
return 0;
}
ContinueGetCachedBitmap();
return 0;
}
void CPDF_ImageCacheEntry::CalcSize() {
m_dwCacheSize = FPDF_ImageCache_EstimateImageSize(m_pCachedBitmap.get()) +
FPDF_ImageCache_EstimateImageSize(m_pCachedMask.get());
}
|
