1 /*
2 * Copyright 2011, The Android Open Source Project
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #define LOG_TAG "ImagesManager"
27 #define LOG_NDEBUG 1
28
29 #include "config.h"
30 #include "ImagesManager.h"
31
32 #include "AndroidLog.h"
33 #include "SkCanvas.h"
34 #include "SkDevice.h"
35 #include "SkRefCnt.h"
36 #include "ImageTexture.h"
37
38 namespace WebCore {
39
instance()40 ImagesManager* ImagesManager::instance()
41 {
42 if (!gInstance)
43 gInstance = new ImagesManager();
44
45 return gInstance;
46 }
47
48 ImagesManager* ImagesManager::gInstance = 0;
49
setImage(SkBitmapRef * imgRef)50 ImageTexture* ImagesManager::setImage(SkBitmapRef* imgRef)
51 {
52 if (!imgRef)
53 return 0;
54
55 TRACE_METHOD();
56 SkBitmap* bitmap = &imgRef->bitmap();
57 ImageTexture* image = 0;
58 SkBitmap* img = 0;
59 unsigned crc = 0;
60
61 crc = ImageTexture::computeCRC(bitmap);
62
63 {
64 android::Mutex::Autolock lock(m_imagesLock);
65 if (m_images.contains(crc)) {
66 image = m_images.get(crc);
67 SkSafeRef(image);
68 return image;
69 }
70 }
71
72 // the image is not in the map, we add it
73
74 img = ImageTexture::convertBitmap(bitmap);
75 image = new ImageTexture(img, crc);
76
77 android::Mutex::Autolock lock(m_imagesLock);
78 m_images.set(crc, image);
79
80 return image;
81 }
82
retainImage(unsigned imgCRC)83 ImageTexture* ImagesManager::retainImage(unsigned imgCRC)
84 {
85 if (!imgCRC)
86 return 0;
87
88 android::Mutex::Autolock lock(m_imagesLock);
89 ImageTexture* image = 0;
90 if (m_images.contains(imgCRC)) {
91 image = m_images.get(imgCRC);
92 SkSafeRef(image);
93 }
94 return image;
95 }
96
releaseImage(unsigned imgCRC)97 void ImagesManager::releaseImage(unsigned imgCRC)
98 {
99 if (!imgCRC)
100 return;
101
102 android::Mutex::Autolock lock(m_imagesLock);
103 if (m_images.contains(imgCRC)) {
104 ImageTexture* image = m_images.get(imgCRC);
105 if (image->getRefCnt() == 1)
106 m_images.remove(imgCRC);
107 SkSafeUnref(image);
108 }
109 }
110
nbTextures()111 int ImagesManager::nbTextures()
112 {
113 android::Mutex::Autolock lock(m_imagesLock);
114 HashMap<unsigned, ImageTexture*>::iterator end = m_images.end();
115 int i = 0;
116 int nb = 0;
117 for (HashMap<unsigned, ImageTexture*>::iterator it = m_images.begin(); it != end; ++it) {
118 nb += it->second->nbTextures();
119 i++;
120 }
121 return nb;
122 }
123
prepareTextures(GLWebViewState * state)124 bool ImagesManager::prepareTextures(GLWebViewState* state)
125 {
126 bool ret = false;
127 android::Mutex::Autolock lock(m_imagesLock);
128 HashMap<unsigned, ImageTexture*>::iterator end = m_images.end();
129 for (HashMap<unsigned, ImageTexture*>::iterator it = m_images.begin(); it != end; ++it) {
130 ret |= it->second->prepareGL(state);
131 }
132 return ret;
133 }
134
135 } // namespace WebCore
136