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
|
// 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"
#include "core/fxge/dib/cfx_dibitmap.h"
CPDF_ImageCacheEntry::CPDF_ImageCacheEntry(CPDF_Document* pDoc,
const RetainPtr<CPDF_Image>& pImage)
: m_dwTimeCount(0),
m_MatteColor(0),
m_pDocument(pDoc),
m_pImage(pImage),
m_dwCacheSize(0) {}
CPDF_ImageCacheEntry::~CPDF_ImageCacheEntry() {}
void CPDF_ImageCacheEntry::Reset(const RetainPtr<CFX_DIBitmap>& pBitmap) {
m_pCachedBitmap.Reset();
if (pBitmap)
m_pCachedBitmap = pBitmap->Clone(nullptr);
CalcSize();
}
static uint32_t FPDF_ImageCache_EstimateImageSize(
const RetainPtr<CFX_DIBSource>& pDIB) {
return pDIB && pDIB->GetBuffer()
? (uint32_t)pDIB->GetHeight() * pDIB->GetPitch() +
(uint32_t)pDIB->GetPaletteSize() * 4
: 0;
}
RetainPtr<CFX_DIBSource> CPDF_ImageCacheEntry::DetachBitmap() {
return std::move(m_pCurBitmap);
}
RetainPtr<CFX_DIBSource> CPDF_ImageCacheEntry::DetachMask() {
return std::move(m_pCurMask);
}
int CPDF_ImageCacheEntry::StartGetCachedBitmap(
CPDF_Dictionary* pFormResources,
CPDF_Dictionary* pPageResources,
bool bStdCS,
uint32_t GroupFamily,
bool bLoadMask,
CPDF_RenderStatus* pRenderStatus) {
ASSERT(pRenderStatus);
if (m_pCachedBitmap) {
m_pCurBitmap = m_pCachedBitmap;
m_pCurMask = m_pCachedMask;
return 1;
}
m_pCurBitmap = pdfium::MakeRetain<CPDF_DIBSource>();
int ret = m_pCurBitmap.As<CPDF_DIBSource>()->StartLoadDIBSource(
m_pDocument.Get(), m_pImage->GetStream(), true, pFormResources,
pPageResources, bStdCS, GroupFamily, bLoadMask);
if (ret == 2)
return ret;
if (!ret) {
m_pCurBitmap.Reset();
return 0;
}
ContinueGetCachedBitmap(pRenderStatus);
return 0;
}
void CPDF_ImageCacheEntry::ContinueGetCachedBitmap(
CPDF_RenderStatus* pRenderStatus) {
m_MatteColor = m_pCurBitmap.As<CPDF_DIBSource>()->GetMatteColor();
m_pCurMask = m_pCurBitmap.As<CPDF_DIBSource>()->DetachMask();
CPDF_RenderContext* pContext = pRenderStatus->GetContext();
CPDF_PageRenderCache* pPageRenderCache = pContext->GetPageCache();
m_dwTimeCount = pPageRenderCache->GetTimeCount();
if (m_pCurBitmap->GetPitch() * m_pCurBitmap->GetHeight() <
FPDF_HUGE_IMAGE_SIZE) {
m_pCachedBitmap = m_pCurBitmap->Clone(nullptr);
m_pCurBitmap.Reset();
} else {
m_pCachedBitmap = m_pCurBitmap;
}
if (m_pCurMask) {
m_pCachedMask = m_pCurMask->Clone(nullptr);
m_pCurMask.Reset();
}
m_pCurBitmap = m_pCachedBitmap;
m_pCurMask = m_pCachedMask;
CalcSize();
}
int CPDF_ImageCacheEntry::Continue(IFX_PauseIndicator* pPause,
CPDF_RenderStatus* pRenderStatus) {
int ret = m_pCurBitmap.As<CPDF_DIBSource>()->ContinueLoadDIBSource(pPause);
if (!ret) {
m_pCurBitmap.Reset();
return 0;
}
if (ret == 2)
return ret;
ContinueGetCachedBitmap(pRenderStatus);
return 0;
}
void CPDF_ImageCacheEntry::CalcSize() {
m_dwCacheSize = FPDF_ImageCache_EstimateImageSize(m_pCachedBitmap) +
FPDF_ImageCache_EstimateImageSize(m_pCachedMask);
}
|
