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ladybird/Libraries/LibGfx/GIFLoader.h

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Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
2020-01-18 08:38:21 +00:00
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. 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.
*
* 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 HOLDER 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.
*/
LibDraw: Start work on a GIF decoder (not yet functional!) Here comes the first part of a GIF decoder. It decodes up to the point of gathering all the LZW-compressed data. The next step is to implement decompression, and then turn the decompressed data into a bitmap using the color maps, etc.
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#pragma once
LibGfx: Rename GraphicsBitmap.{cpp,h} => Bitmap.{cpp,h}
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#include <LibGfx/Bitmap.h>
LibGfx: Rename from LibDraw :^)
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#include <LibGfx/ImageDecoder.h>
LibDraw: Start work on a GIF decoder (not yet functional!) Here comes the first part of a GIF decoder. It decodes up to the point of gathering all the LZW-compressed data. The next step is to implement decompression, and then turn the decompressed data into a bitmap using the color maps, etc.
2019-11-23 15:48:28 +00:00
LibDraw: Put all classes in the Gfx namespace I started adding things to a Draw namespace, but it somehow felt really wrong seeing Draw::Rect and Draw::Bitmap, etc. So instead, let's rename the library to LibGfx. :^)
2020-02-06 10:56:38 +00:00
namespace Gfx {
RefPtr<Gfx::Bitmap> load_gif(const StringView& path);
RefPtr<Gfx::Bitmap> load_gif_from_memory(const u8*, size_t);
LibDraw: Start work on a GIF decoder (not yet functional!) Here comes the first part of a GIF decoder. It decodes up to the point of gathering all the LZW-compressed data. The next step is to implement decompression, and then turn the decompressed data into a bitmap using the color maps, etc.
2019-11-23 15:48:28 +00:00
struct GIFLoadingContext;
class GIFImageDecoderPlugin final : public ImageDecoderPlugin {
public:
virtual ~GIFImageDecoderPlugin() override;
GIFImageDecoderPlugin(const u8*, size_t);
LibGfx: Rename Rect,Point,Size => IntRect,IntPoint,IntSize This fits nicer with FloatRect,FloatPoint,FloatSize and gives a much better visual clue about what type of metric is being used.
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virtual IntSize size() override;
LibDraw: Put all classes in the Gfx namespace I started adding things to a Draw namespace, but it somehow felt really wrong seeing Draw::Rect and Draw::Bitmap, etc. So instead, let's rename the library to LibGfx. :^)
2020-02-06 10:56:38 +00:00
virtual RefPtr<Gfx::Bitmap> bitmap() override;
LibDraw: Override set_{non,}volatile in GIFLoader
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virtual void set_volatile() override;
[[nodiscard]] virtual bool set_nonvolatile() override;
LibGfx: Add a sniff method to ImageDecoder and implement for GIF and PNG The sniff method is intended to be used for content sniffing. It should be a cheap test to rapidly rule out whether a candidate image can be successfully decoded. For the GIF and PNG implementations it simply attempts to decode the image header, returning true if successful and false if not.
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virtual bool sniff() override;
LibGfx: Add support for animated images to ImageDecoder{Plugin} 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.
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virtual bool is_animated() override;
virtual size_t loop_count() override;
virtual size_t frame_count() override;
virtual ImageFrameDescriptor frame(size_t i) override;
LibDraw: Start work on a GIF decoder (not yet functional!) Here comes the first part of a GIF decoder. It decodes up to the point of gathering all the LZW-compressed data. The next step is to implement decompression, and then turn the decompressed data into a bitmap using the color maps, etc.
2019-11-23 15:48:28 +00:00
private:
OwnPtr<GIFLoadingContext> m_context;
};
LibDraw: Put all classes in the Gfx namespace I started adding things to a Draw namespace, but it somehow felt really wrong seeing Draw::Rect and Draw::Bitmap, etc. So instead, let's rename the library to LibGfx. :^)
2020-02-06 10:56:38 +00:00
}
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