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ladybird/Libraries/LibGfx/ImageDecoder.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: Add ImageLoader, a simple abstraction for image loading An ImageLoader is a generic interface for loading encoded image data of any supported format. It has an ImageLoaderPlugin internally that does all the work. This patch adds an initial PNGImageLoaderPlugin that knows how to retrieve the size of a PNG, and the bitmap. The API is divided into size() and bitmap() to facilitate geometry-only decoding. This will be useful in places like LibHTML where we need dimensions for layout purposes but can wait with the bitmap until later.
2019-10-15 19:48:08 +00:00
#pragma once
LibGfx: Add ImageDecoder factory overload for ByteBuffers
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#include <AK/ByteBuffer.h>
LibDraw: Add ImageLoader, a simple abstraction for image loading An ImageLoader is a generic interface for loading encoded image data of any supported format. It has an ImageLoaderPlugin internally that does all the work. This patch adds an initial PNGImageLoaderPlugin that knows how to retrieve the size of a PNG, and the bitmap. The API is divided into size() and bitmap() to facilitate geometry-only decoding. This will be useful in places like LibHTML where we need dimensions for layout purposes but can wait with the bitmap until later.
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#include <AK/OwnPtr.h>
#include <AK/RefCounted.h>
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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#include <AK/RefPtr.h>
LibGfx: Rename from LibDraw :^)
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#include <LibGfx/Size.h>
LibDraw: Add ImageLoader, a simple abstraction for image loading An ImageLoader is a generic interface for loading encoded image data of any supported format. It has an ImageLoaderPlugin internally that does all the work. This patch adds an initial PNGImageLoaderPlugin that knows how to retrieve the size of a PNG, and the bitmap. The API is divided into size() and bitmap() to facilitate geometry-only decoding. This will be useful in places like LibHTML where we need dimensions for layout purposes but can wait with the bitmap until later.
2019-10-15 19:48:08 +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 {
class Bitmap;
LibDraw: Add ImageLoader, a simple abstraction for image loading An ImageLoader is a generic interface for loading encoded image data of any supported format. It has an ImageLoaderPlugin internally that does all the work. This patch adds an initial PNGImageLoaderPlugin that knows how to retrieve the size of a PNG, and the bitmap. The API is divided into size() and bitmap() to facilitate geometry-only decoding. This will be useful in places like LibHTML where we need dimensions for layout purposes but can wait with the bitmap until later.
2019-10-15 19:48:08 +00:00
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.
2020-05-03 16:12:54 +00:00
struct ImageFrameDescriptor {
RefPtr<Bitmap> image;
int duration { 0 };
};
LibDraw: Rename ImageLoader => ImageDecoder ImageLoader was not the right name for this, as there is no loading happening, only decoding. :^)
2019-10-19 17:56:49 +00:00
class ImageDecoderPlugin {
LibDraw: Add ImageLoader, a simple abstraction for image loading An ImageLoader is a generic interface for loading encoded image data of any supported format. It has an ImageLoaderPlugin internally that does all the work. This patch adds an initial PNGImageLoaderPlugin that knows how to retrieve the size of a PNG, and the bitmap. The API is divided into size() and bitmap() to facilitate geometry-only decoding. This will be useful in places like LibHTML where we need dimensions for layout purposes but can wait with the bitmap until later.
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public:
LibGfx: Add ImageDecoder factory overload for ByteBuffers
2020-06-01 19:32:54 +00:00
virtual ~ImageDecoderPlugin() { }
LibDraw: Add ImageLoader, a simple abstraction for image loading An ImageLoader is a generic interface for loading encoded image data of any supported format. It has an ImageLoaderPlugin internally that does all the work. This patch adds an initial PNGImageLoaderPlugin that knows how to retrieve the size of a PNG, and the bitmap. The API is divided into size() and bitmap() to facilitate geometry-only decoding. This will be useful in places like LibHTML where we need dimensions for layout purposes but can wait with the bitmap until later.
2019-10-15 19:48:08 +00:00
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.
2020-06-10 08:57:59 +00:00
virtual IntSize size() = 0;
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() = 0;
LibDraw: Add ImageLoader, a simple abstraction for image loading An ImageLoader is a generic interface for loading encoded image data of any supported format. It has an ImageLoaderPlugin internally that does all the work. This patch adds an initial PNGImageLoaderPlugin that knows how to retrieve the size of a PNG, and the bitmap. The API is divided into size() and bitmap() to facilitate geometry-only decoding. This will be useful in places like LibHTML where we need dimensions for layout purposes but can wait with the bitmap until later.
2019-10-15 19:48:08 +00:00
LibDraw: Create purgeable GraphicsBitmap in the PNG decoder Also add ImageDecoder APIs for controlling the volatile flag.
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virtual void set_volatile() = 0;
[[nodiscard]] virtual bool set_nonvolatile() = 0;
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() = 0;
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.
2020-05-03 16:12:54 +00:00
virtual bool is_animated() = 0;
virtual size_t loop_count() = 0;
virtual size_t frame_count() = 0;
virtual ImageFrameDescriptor frame(size_t i) = 0;
LibDraw: Add ImageLoader, a simple abstraction for image loading An ImageLoader is a generic interface for loading encoded image data of any supported format. It has an ImageLoaderPlugin internally that does all the work. This patch adds an initial PNGImageLoaderPlugin that knows how to retrieve the size of a PNG, and the bitmap. The API is divided into size() and bitmap() to facilitate geometry-only decoding. This will be useful in places like LibHTML where we need dimensions for layout purposes but can wait with the bitmap until later.
2019-10-15 19:48:08 +00:00
protected:
LibGfx: Add ImageDecoder factory overload for ByteBuffers
2020-06-01 19:32:54 +00:00
ImageDecoderPlugin() { }
LibDraw: Add ImageLoader, a simple abstraction for image loading An ImageLoader is a generic interface for loading encoded image data of any supported format. It has an ImageLoaderPlugin internally that does all the work. This patch adds an initial PNGImageLoaderPlugin that knows how to retrieve the size of a PNG, and the bitmap. The API is divided into size() and bitmap() to facilitate geometry-only decoding. This will be useful in places like LibHTML where we need dimensions for layout purposes but can wait with the bitmap until later.
2019-10-15 19:48:08 +00:00
};
LibDraw: Rename ImageLoader => ImageDecoder ImageLoader was not the right name for this, as there is no loading happening, only decoding. :^)
2019-10-19 17:56:49 +00:00
class ImageDecoder : public RefCounted<ImageDecoder> {
LibDraw: Add ImageLoader, a simple abstraction for image loading An ImageLoader is a generic interface for loading encoded image data of any supported format. It has an ImageLoaderPlugin internally that does all the work. This patch adds an initial PNGImageLoaderPlugin that knows how to retrieve the size of a PNG, and the bitmap. The API is divided into size() and bitmap() to facilitate geometry-only decoding. This will be useful in places like LibHTML where we need dimensions for layout purposes but can wait with the bitmap until later.
2019-10-15 19:48:08 +00:00
public:
LibDraw: Rename ImageLoader => ImageDecoder ImageLoader was not the right name for this, as there is no loading happening, only decoding. :^)
2019-10-19 17:56:49 +00:00
static NonnullRefPtr<ImageDecoder> create(const u8* data, size_t size) { return adopt(*new ImageDecoder(data, size)); }
LibGfx: Add ImageDecoder factory overload for ByteBuffers
2020-06-01 19:32:54 +00:00
static NonnullRefPtr<ImageDecoder> create(const ByteBuffer& data) { return adopt(*new ImageDecoder(data.data(), data.size())); }
LibDraw: Rename ImageLoader => ImageDecoder ImageLoader was not the right name for this, as there is no loading happening, only decoding. :^)
2019-10-19 17:56:49 +00:00
~ImageDecoder();
LibDraw: Add ImageLoader, a simple abstraction for image loading An ImageLoader is a generic interface for loading encoded image data of any supported format. It has an ImageLoaderPlugin internally that does all the work. This patch adds an initial PNGImageLoaderPlugin that knows how to retrieve the size of a PNG, and the bitmap. The API is divided into size() and bitmap() to facilitate geometry-only decoding. This will be useful in places like LibHTML where we need dimensions for layout purposes but can wait with the bitmap until later.
2019-10-15 19:48:08 +00:00
LibGfx: Don't keep an unused GIF decoder plugin in failed ImageDecoders If we can't decode the input data, just have a null decoder. In this state we simply return a null bitmap and whatever empty values make sense for each API. This way, we don't try to decode the same thing over and over since it's not gonna work anyway. :^)
2020-06-13 13:28:04 +00:00
bool is_valid() const { return m_plugin; }
IntSize size() const { return m_plugin ? m_plugin->size() : IntSize(); }
LibDraw: Add ImageLoader, a simple abstraction for image loading An ImageLoader is a generic interface for loading encoded image data of any supported format. It has an ImageLoaderPlugin internally that does all the work. This patch adds an initial PNGImageLoaderPlugin that knows how to retrieve the size of a PNG, and the bitmap. The API is divided into size() and bitmap() to facilitate geometry-only decoding. This will be useful in places like LibHTML where we need dimensions for layout purposes but can wait with the bitmap until later.
2019-10-15 19:48:08 +00:00
int width() const { return size().width(); }
int height() const { return size().height(); }
LibGfx: Move a bunch of LogStream::operator<< to cpp files
2020-02-14 23:58:14 +00:00
RefPtr<Gfx::Bitmap> bitmap() const;
LibGfx: Don't keep an unused GIF decoder plugin in failed ImageDecoders If we can't decode the input data, just have a null decoder. In this state we simply return a null bitmap and whatever empty values make sense for each API. This way, we don't try to decode the same thing over and over since it's not gonna work anyway. :^)
2020-06-13 13:28:04 +00:00
void set_volatile()
{
if (m_plugin)
m_plugin->set_volatile();
}
[[nodiscard]] bool set_nonvolatile() { return m_plugin ? m_plugin->set_nonvolatile() : false; }
bool sniff() const { return m_plugin ? m_plugin->sniff() : false; }
bool is_animated() const { return m_plugin ? m_plugin->is_animated() : false; }
size_t loop_count() const { return m_plugin ? m_plugin->loop_count() : 0; }
size_t frame_count() const { return m_plugin ? m_plugin->frame_count() : 0; }
ImageFrameDescriptor frame(size_t i) const { return m_plugin ? m_plugin->frame(i) : ImageFrameDescriptor(); }
LibDraw: Add ImageLoader, a simple abstraction for image loading An ImageLoader is a generic interface for loading encoded image data of any supported format. It has an ImageLoaderPlugin internally that does all the work. This patch adds an initial PNGImageLoaderPlugin that knows how to retrieve the size of a PNG, and the bitmap. The API is divided into size() and bitmap() to facilitate geometry-only decoding. This will be useful in places like LibHTML where we need dimensions for layout purposes but can wait with the bitmap until later.
2019-10-15 19:48:08 +00:00
private:
LibDraw: Rename ImageLoader => ImageDecoder ImageLoader was not the right name for this, as there is no loading happening, only decoding. :^)
2019-10-19 17:56:49 +00:00
ImageDecoder(const u8*, size_t);
LibDraw: Add ImageLoader, a simple abstraction for image loading An ImageLoader is a generic interface for loading encoded image data of any supported format. It has an ImageLoaderPlugin internally that does all the work. This patch adds an initial PNGImageLoaderPlugin that knows how to retrieve the size of a PNG, and the bitmap. The API is divided into size() and bitmap() to facilitate geometry-only decoding. This will be useful in places like LibHTML where we need dimensions for layout purposes but can wait with the bitmap until later.
2019-10-15 19:48:08 +00:00
LibDraw: Rename ImageLoader => ImageDecoder ImageLoader was not the right name for this, as there is no loading happening, only decoding. :^)
2019-10-19 17:56:49 +00:00
mutable OwnPtr<ImageDecoderPlugin> m_plugin;
LibDraw: Add ImageLoader, a simple abstraction for image loading An ImageLoader is a generic interface for loading encoded image data of any supported format. It has an ImageLoaderPlugin internally that does all the work. This patch adds an initial PNGImageLoaderPlugin that knows how to retrieve the size of a PNG, and the bitmap. The API is divided into size() and bitmap() to facilitate geometry-only decoding. This will be useful in places like LibHTML where we need dimensions for layout purposes but can wait with the bitmap until later.
2019-10-15 19:48:08 +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
}
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