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https://github.com/LadybirdBrowser/ladybird.git
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d22bb92764
Adds methods to determine whether an image is animated, how many times the animation loops, the number of frames, and to get individual frames. Implements stubs of these methods for PNGImageDecoderPlugin and GIFImageDecoderPlugin.
87 lines
3 KiB
C++
87 lines
3 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/OwnPtr.h>
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#include <AK/RefCounted.h>
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#include <AK/RefPtr.h>
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#include <LibGfx/Size.h>
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namespace Gfx {
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class Bitmap;
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struct ImageFrameDescriptor {
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RefPtr<Bitmap> image;
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int duration { 0 };
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};
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class ImageDecoderPlugin {
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public:
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virtual ~ImageDecoderPlugin() {}
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virtual Size size() = 0;
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virtual RefPtr<Gfx::Bitmap> bitmap() = 0;
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virtual void set_volatile() = 0;
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[[nodiscard]] virtual bool set_nonvolatile() = 0;
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virtual bool sniff() = 0;
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virtual bool is_animated() = 0;
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virtual size_t loop_count() = 0;
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virtual size_t frame_count() = 0;
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virtual ImageFrameDescriptor frame(size_t i) = 0;
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protected:
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ImageDecoderPlugin() {}
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};
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class ImageDecoder : public RefCounted<ImageDecoder> {
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public:
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static NonnullRefPtr<ImageDecoder> create(const u8* data, size_t size) { return adopt(*new ImageDecoder(data, size)); }
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~ImageDecoder();
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Size size() const { return m_plugin->size(); }
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int width() const { return size().width(); }
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int height() const { return size().height(); }
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RefPtr<Gfx::Bitmap> bitmap() const;
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void set_volatile() { m_plugin->set_volatile(); }
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[[nodiscard]] bool set_nonvolatile() { return m_plugin->set_nonvolatile(); }
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bool sniff() const { return m_plugin->sniff(); }
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bool is_animated() const { return m_plugin->is_animated(); }
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size_t loop_count() const { return m_plugin->loop_count(); }
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size_t frame_count() const { return m_plugin->frame_count(); }
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ImageFrameDescriptor frame(size_t i) const { return m_plugin->frame(i); }
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private:
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ImageDecoder(const u8*, size_t);
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mutable OwnPtr<ImageDecoderPlugin> m_plugin;
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};
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}
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