mirror of
https://github.com/flutter/flutter.git
synced 2026-02-20 02:29:02 +08:00
90 lines
3.1 KiB
C++
90 lines
3.1 KiB
C++
/*
|
|
* Copyright (C) 2010 Google Inc. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following disclaimer
|
|
* in the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* * Neither the name of Google Inc. nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef WebImageDecoder_h
|
|
#define WebImageDecoder_h
|
|
|
|
#include "../platform/WebCommon.h"
|
|
#include "../platform/WebImage.h"
|
|
#include "../platform/WebNonCopyable.h"
|
|
|
|
namespace blink {
|
|
|
|
class ImageDecoder;
|
|
class WebData;
|
|
typedef ImageDecoder WebImageDecoderPrivate;
|
|
|
|
class WebImageDecoder : public WebNonCopyable {
|
|
public:
|
|
enum Type {
|
|
TypeBMP,
|
|
TypeICO
|
|
};
|
|
|
|
~WebImageDecoder() { reset(); }
|
|
|
|
explicit WebImageDecoder(Type type) { init(type); }
|
|
|
|
// Sets data contents for underlying decoder. All the API methods
|
|
// require that setData() is called prior to their use.
|
|
BLINK_EXPORT void setData(const WebData& data, bool allDataReceived);
|
|
|
|
// Deletes owned decoder.
|
|
BLINK_EXPORT void reset();
|
|
|
|
// Returns true if image decoding failed.
|
|
BLINK_EXPORT bool isFailed() const;
|
|
|
|
// Returns true if size information is available for the decoder.
|
|
BLINK_EXPORT bool isSizeAvailable() const;
|
|
|
|
// Returns the size of the image.
|
|
BLINK_EXPORT WebSize size() const;
|
|
|
|
// Gives frame count for the image. For multiple frames, decoder scans the image data for the count.
|
|
BLINK_EXPORT size_t frameCount() const;
|
|
|
|
// Returns if the frame at given index is completely decoded.
|
|
BLINK_EXPORT bool isFrameCompleteAtIndex(int index) const;
|
|
|
|
// Creates and returns WebImage from buffer at the index.
|
|
BLINK_EXPORT WebImage getFrameAtIndex(int index) const;
|
|
|
|
private:
|
|
// Creates type-specific decoder.
|
|
BLINK_EXPORT void init(Type type);
|
|
|
|
WebImageDecoderPrivate* m_private;
|
|
};
|
|
|
|
} // namespace blink
|
|
|
|
#endif
|