2 * Copyright (C) 2012 Google Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. 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.
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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.
26 #ifndef DeferredImageDecoder_h
27 #define DeferredImageDecoder_h
30 #include "platform/PlatformExport.h"
31 #include "platform/geometry/IntSize.h"
32 #include "platform/graphics/ImageFrameGenerator.h"
33 #include "platform/graphics/ImageSource.h"
34 #include "platform/image-decoders/ImageDecoder.h"
35 #include "wtf/Forward.h"
36 #include "wtf/OwnPtr.h"
37 #include "wtf/Vector.h"
41 class ImageFrameGenerator;
44 class PLATFORM_EXPORT DeferredImageDecoder {
45 WTF_MAKE_NONCOPYABLE(DeferredImageDecoder);
47 ~DeferredImageDecoder();
48 static PassOwnPtr<DeferredImageDecoder> create(const SharedBuffer& data, ImageSource::AlphaOption, ImageSource::GammaAndColorProfileOption);
50 static PassOwnPtr<DeferredImageDecoder> createForTesting(PassOwnPtr<ImageDecoder>);
52 static bool isLazyDecoded(const SkBitmap&);
54 static void setEnabled(bool);
55 static bool enabled();
57 String filenameExtension() const;
59 ImageFrame* frameBufferAtIndex(size_t index);
61 void setData(SharedBuffer& data, bool allDataReceived);
63 bool isSizeAvailable();
64 bool hasColorProfile() const;
66 IntSize frameSizeAtIndex(size_t index) const;
68 int repetitionCount() const;
69 size_t clearCacheExceptFrame(size_t);
70 bool frameHasAlphaAtIndex(size_t index) const;
71 bool frameIsCompleteAtIndex(size_t) const;
72 float frameDurationAtIndex(size_t) const;
73 unsigned frameBytesAtIndex(size_t index) const;
74 ImageOrientation orientation() const;
75 bool hotSpot(IntPoint&) const;
78 ImageFrameGenerator* frameGenerator() { return m_frameGenerator.get(); }
81 explicit DeferredImageDecoder(PassOwnPtr<ImageDecoder> actualDecoder);
82 void prepareLazyDecodedFrames();
83 SkBitmap createBitmap(size_t index);
84 SkBitmap createSkiaDiscardableBitmap(size_t index);
85 SkBitmap createLazyDecodingBitmap(size_t index);
86 void activateLazyDecoding();
88 RefPtr<SharedBuffer> m_data;
89 bool m_allDataReceived;
90 unsigned m_lastDataSize;
92 OwnPtr<ImageDecoder> m_actualDecoder;
94 String m_filenameExtension;
96 ImageOrientation m_orientation;
97 int m_repetitionCount;
98 bool m_hasColorProfile;
100 Vector<OwnPtr<ImageFrame> > m_lazyDecodedFrames;
101 RefPtr<ImageFrameGenerator> m_frameGenerator;
103 static bool s_enabled;
104 static bool s_skiaDiscardableMemoryEnabled;
107 } // namespace WebCore