1 /*
2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
3 * Copyright (C) 2008, 2009 Google, Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include "config.h"
28 #include "ImageDecoder.h"
29 #if PLATFORM(ANDROID)
30 #include "SkBitmapRef.h"
31 #endif
32
33 namespace WebCore {
34
RGBA32Buffer()35 RGBA32Buffer::RGBA32Buffer()
36 : m_status(FrameEmpty)
37 , m_duration(0)
38 , m_disposalMethod(DisposeNotSpecified)
39 {
40 }
41
clear()42 void RGBA32Buffer::clear()
43 {
44 m_bitmap.reset();
45 m_status = FrameEmpty;
46 // NOTE: Do not reset other members here; clearFrameBufferCache()
47 // calls this to free the bitmap data, but other functions like
48 // initFrameBuffer() and frameComplete() may still need to read
49 // other metadata out of this frame later.
50 }
51
zeroFill()52 void RGBA32Buffer::zeroFill()
53 {
54 m_bitmap.eraseARGB(0, 0, 0, 0);
55 }
56
copyBitmapData(const RGBA32Buffer & other)57 void RGBA32Buffer::copyBitmapData(const RGBA32Buffer& other)
58 {
59 if (this == &other)
60 return;
61
62 m_bitmap.reset();
63 const NativeImageSkia& otherBitmap = other.m_bitmap;
64 otherBitmap.copyTo(&m_bitmap, otherBitmap.config());
65 }
66
setSize(int newWidth,int newHeight)67 bool RGBA32Buffer::setSize(int newWidth, int newHeight)
68 {
69 // This function should only be called once, it will leak memory
70 // otherwise.
71 ASSERT(width() == 0 && height() == 0);
72 m_bitmap.setConfig(SkBitmap::kARGB_8888_Config, newWidth, newHeight);
73 if (!m_bitmap.allocPixels())
74 return false;
75
76 // Zero the image.
77 zeroFill();
78
79 return true;
80 }
81
asNewNativeImage() const82 NativeImagePtr RGBA32Buffer::asNewNativeImage() const
83 {
84 #if PLATFORM(ANDROID)
85 return new SkBitmapRef(m_bitmap);
86 #else
87 return new NativeImageSkia(m_bitmap);
88 #endif
89 }
90
hasAlpha() const91 bool RGBA32Buffer::hasAlpha() const
92 {
93 return !m_bitmap.isOpaque();
94 }
95
setHasAlpha(bool alpha)96 void RGBA32Buffer::setHasAlpha(bool alpha)
97 {
98 m_bitmap.setIsOpaque(!alpha);
99 }
100
setStatus(FrameStatus status)101 void RGBA32Buffer::setStatus(FrameStatus status)
102 {
103 m_status = status;
104 if (m_status == FrameComplete)
105 m_bitmap.setDataComplete(); // Tell the bitmap it's done.
106 }
107
operator =(const RGBA32Buffer & other)108 RGBA32Buffer& RGBA32Buffer::operator=(const RGBA32Buffer& other)
109 {
110 if (this == &other)
111 return *this;
112
113 m_bitmap = other.m_bitmap;
114 // Keep the pixels locked since we will be writing directly into the
115 // bitmap throughout this object's lifetime.
116 m_bitmap.lockPixels();
117 setRect(other.rect());
118 setStatus(other.status());
119 setDuration(other.duration());
120 setDisposalMethod(other.disposalMethod());
121 return *this;
122 }
123
width() const124 int RGBA32Buffer::width() const
125 {
126 return m_bitmap.width();
127 }
128
height() const129 int RGBA32Buffer::height() const
130 {
131 return m_bitmap.height();
132 }
133
134 } // namespace WebCore
135