1/*
2 * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
3 * Copyright (C) 2008, 2009 Google, Inc.
4 * Copyright (C) 2009 Holger Hans Peter Freyther
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include "config.h"
29#include "ImageDecoder.h"
30
31#include <QPixmap>
32#include <stdio.h>
33
34namespace WebCore {
35
36RGBA32Buffer::RGBA32Buffer()
37    : m_hasAlpha(false)
38    , m_size()
39    , m_status(FrameEmpty)
40    , m_duration(0)
41    , m_disposalMethod(DisposeNotSpecified)
42{
43}
44
45// The image must not have format 8888 pre multiplied...
46void RGBA32Buffer::setDecodedImage(const QImage& image)
47{
48    m_image = image;
49    m_size = image.size();
50    m_hasAlpha = image.hasAlphaChannel();
51}
52
53void RGBA32Buffer::clear()
54{
55    m_image = QImage();
56    m_status = FrameEmpty;
57    // NOTE: Do not reset other members here; clearFrameBufferCache()
58    // calls this to free the bitmap data, but other functions like
59    // initFrameBuffer() and frameComplete() may still need to read
60    // other metadata out of this frame later.
61}
62
63void RGBA32Buffer::zeroFill()
64{
65    m_image.fill(0);
66}
67
68void RGBA32Buffer::copyBitmapData(const RGBA32Buffer& other)
69{
70    if (this == &other)
71        return;
72
73    m_image = other.m_image;
74    m_size = other.m_size;
75    m_hasAlpha = other.m_hasAlpha;
76}
77
78bool RGBA32Buffer::setSize(int newWidth, int newHeight)
79{
80    // This function should only be called once, it will leak memory
81    // otherwise.
82    ASSERT(width() == 0 && height() == 0);
83
84    m_size = IntSize(newWidth, newHeight);
85    m_image = QImage(newWidth, newHeight, QImage::Format_ARGB32_Premultiplied);
86    if (m_image.isNull())
87        return false;
88
89    // Zero the image.
90    zeroFill();
91
92    return true;
93}
94
95QPixmap* RGBA32Buffer::asNewNativeImage() const
96{
97    QPixmap pix = QPixmap::fromImage(m_image);
98    m_image = QImage();
99
100    return new QPixmap(pix);
101}
102
103bool RGBA32Buffer::hasAlpha() const
104{
105    return m_hasAlpha;
106}
107
108void RGBA32Buffer::setHasAlpha(bool alpha)
109{
110    m_hasAlpha = alpha;
111}
112
113void RGBA32Buffer::setStatus(FrameStatus status)
114{
115    m_status = status;
116}
117
118RGBA32Buffer& RGBA32Buffer::operator=(const RGBA32Buffer& other)
119{
120    if (this == &other)
121        return *this;
122
123    copyBitmapData(other);
124    setRect(other.rect());
125    setStatus(other.status());
126    setDuration(other.duration());
127    setDisposalMethod(other.disposalMethod());
128    return *this;
129}
130
131int RGBA32Buffer::width() const
132{
133    return m_size.width();
134}
135
136int RGBA32Buffer::height() const
137{
138    return m_size.height();
139}
140
141}
142