1/*
2 * Copyright (C) 2012 Google Inc. All rights reserved.
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 *
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 AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef MockImageDecoder_h
27
28#include "platform/image-decoders/ImageDecoder.h"
29#include "wtf/PassOwnPtr.h"
30
31namespace blink {
32
33class MockImageDecoderClient {
34public:
35    virtual void decoderBeingDestroyed() = 0;
36    virtual void frameBufferRequested() = 0;
37    virtual ImageFrame::Status status() = 0;
38    virtual size_t frameCount() = 0;
39    virtual int repetitionCount() const = 0;
40    virtual float frameDuration() const = 0;
41
42    // Clients can control the behavior of MockImageDecoder::decodedSize() by
43    // overriding this method. The default implementation causes
44    // MockImageDecoder::decodedSize() to return the same thing as
45    // MockImageDecoder::size(). See the precise implementation of
46    // MockImageDecoder::decodedSize() below.
47    virtual IntSize decodedSize() const { return IntSize(); }
48};
49
50class MockImageDecoder : public ImageDecoder {
51public:
52    static PassOwnPtr<MockImageDecoder> create(MockImageDecoderClient* client) { return adoptPtr(new MockImageDecoder(client)); }
53
54    MockImageDecoder(MockImageDecoderClient* client)
55        : ImageDecoder(ImageSource::AlphaPremultiplied, ImageSource::GammaAndColorProfileApplied, noDecodedImageByteLimit)
56        , m_client(client)
57    { }
58
59    ~MockImageDecoder()
60    {
61        m_client->decoderBeingDestroyed();
62    }
63
64    virtual IntSize decodedSize() const OVERRIDE
65    {
66        return m_client->decodedSize().isEmpty() ? size() : m_client->decodedSize();
67    }
68
69    virtual bool setSize(unsigned width, unsigned height) OVERRIDE
70    {
71        ImageDecoder::setSize(width, height);
72        m_frameBufferCache.resize(1);
73        m_frameBufferCache[0].setSize(width, height);
74        return true;
75    }
76
77    virtual String filenameExtension() const OVERRIDE
78    {
79        return "mock";
80    }
81
82    virtual size_t frameCount() OVERRIDE
83    {
84        return m_client->frameCount();
85    }
86
87    virtual int repetitionCount() const OVERRIDE
88    {
89        return m_client->repetitionCount();
90    }
91
92    virtual ImageFrame* frameBufferAtIndex(size_t) OVERRIDE
93    {
94        m_client->frameBufferRequested();
95
96        m_frameBufferCache[0].setStatus(m_client->status());
97        return &m_frameBufferCache[0];
98    }
99
100    virtual bool frameIsCompleteAtIndex(size_t) const OVERRIDE
101    {
102        return m_client->status() == ImageFrame::FrameComplete;
103    }
104
105    virtual float frameDurationAtIndex(size_t) const OVERRIDE
106    {
107        return m_client->frameDuration();
108    }
109
110    void setFrameHasAlpha(bool hasAlpha) { m_frameBufferCache[0].setHasAlpha(hasAlpha); }
111
112private:
113    MockImageDecoderClient* m_client;
114};
115
116class MockImageDecoderFactory : public ImageDecoderFactory {
117public:
118    static PassOwnPtr<MockImageDecoderFactory> create(MockImageDecoderClient* client, const SkISize& decodedSize)
119    {
120        return adoptPtr(new MockImageDecoderFactory(client, IntSize(decodedSize.width(), decodedSize.height())));
121    }
122
123    static PassOwnPtr<MockImageDecoderFactory> create(MockImageDecoderClient* client, const IntSize& decodedSize)
124    {
125        return adoptPtr(new MockImageDecoderFactory(client, decodedSize));
126    }
127
128    virtual PassOwnPtr<ImageDecoder> create() OVERRIDE
129    {
130        OwnPtr<MockImageDecoder> decoder = MockImageDecoder::create(m_client);
131        decoder->setSize(m_decodedSize.width(), m_decodedSize.height());
132        decoder->setFrameHasAlpha(false);
133        return decoder.release();
134    }
135
136private:
137    MockImageDecoderFactory(MockImageDecoderClient* client, const IntSize& decodedSize)
138        : m_client(client)
139        , m_decodedSize(decodedSize)
140    {
141    }
142
143    MockImageDecoderClient* m_client;
144    IntSize m_decodedSize;
145};
146
147} // namespace blink
148
149#endif // MockImageDecoder_h
150