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ladybird/Libraries/LibGfx/CMYKBitmap.h

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LibGfx: Add CMYKBitmap This is a simple container for 2d CMYK data. This is a new class instead of a new format in Bitmap because: * Almost all clients of Bitmap will want to deal with RGB data * It keeps the ARGB32 typedef working * Bitmap already does a lot of things The idea is that a few select places will be able to use CMYKBitmap and a color profile to do a better CMYK -> RGB conversion than an image decoder could do, and then store the result in a Bitmap for later display then. CMYKBitmap misses some of Bitmap's features, such as shared memory support, high-dpi scaling capability, etc.
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/*
* Copyright (c) 2024, Nico Weber <thakis@chromium.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/ByteBuffer.h>
#include <AK/NonnullRefPtr.h>
#include <AK/RefCounted.h>
LibGfx/JPEG+CMYKBitmap: Extract the CMYK to RGB conversion code Right now, the JPEG decoder is the only one supporting CMYK, but that won't last for long. So, let's move the conversion to CMYKBitmap.
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#include <LibGfx/Bitmap.h>
LibGfx: Add CMYKBitmap This is a simple container for 2d CMYK data. This is a new class instead of a new format in Bitmap because: * Almost all clients of Bitmap will want to deal with RGB data * It keeps the ARGB32 typedef working * Bitmap already does a lot of things The idea is that a few select places will be able to use CMYKBitmap and a color profile to do a better CMYK -> RGB conversion than an image decoder could do, and then store the result in a Bitmap for later display then. CMYKBitmap misses some of Bitmap's features, such as shared memory support, high-dpi scaling capability, etc.
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#include <LibGfx/Size.h>
namespace Gfx {
struct CMYK {
u8 c;
u8 m;
u8 y;
u8 k;
LibGfx: Add comparison operators to CMYK
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int operator<=>(CMYK const&) const = default;
LibGfx: Add CMYKBitmap This is a simple container for 2d CMYK data. This is a new class instead of a new format in Bitmap because: * Almost all clients of Bitmap will want to deal with RGB data * It keeps the ARGB32 typedef working * Bitmap already does a lot of things The idea is that a few select places will be able to use CMYKBitmap and a color profile to do a better CMYK -> RGB conversion than an image decoder could do, and then store the result in a Bitmap for later display then. CMYKBitmap misses some of Bitmap's features, such as shared memory support, high-dpi scaling capability, etc.
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};
class CMYKBitmap : public RefCounted<CMYKBitmap> {
public:
static ErrorOr<NonnullRefPtr<CMYKBitmap>> create_with_size(IntSize const& size);
IntSize const& size() const { return m_size; }
[[nodiscard]] CMYK* scanline(int y);
[[nodiscard]] CMYK const* scanline(int y) const;
[[nodiscard]] CMYK* begin();
[[nodiscard]] CMYK* end();
LibGfx: Add data_size() accessors to Bitmap and CMYKBitmap These return the size of the data in bytes.
2024-01-24 16:43:39 +00:00
[[nodiscard]] size_t data_size() const { return m_data.size(); }
LibGfx: Add CMYKBitmap This is a simple container for 2d CMYK data. This is a new class instead of a new format in Bitmap because: * Almost all clients of Bitmap will want to deal with RGB data * It keeps the ARGB32 typedef working * Bitmap already does a lot of things The idea is that a few select places will be able to use CMYKBitmap and a color profile to do a better CMYK -> RGB conversion than an image decoder could do, and then store the result in a Bitmap for later display then. CMYKBitmap misses some of Bitmap's features, such as shared memory support, high-dpi scaling capability, etc.
2024-01-08 01:29:24 +00:00
LibGfx/JPEG+CMYKBitmap: Extract the CMYK to RGB conversion code Right now, the JPEG decoder is the only one supporting CMYK, but that won't last for long. So, let's move the conversion to CMYKBitmap.
2024-01-18 21:59:42 +00:00
ErrorOr<RefPtr<Bitmap>> to_low_quality_rgb() const;
LibGfx: Add CMYKBitmap This is a simple container for 2d CMYK data. This is a new class instead of a new format in Bitmap because: * Almost all clients of Bitmap will want to deal with RGB data * It keeps the ARGB32 typedef working * Bitmap already does a lot of things The idea is that a few select places will be able to use CMYKBitmap and a color profile to do a better CMYK -> RGB conversion than an image decoder could do, and then store the result in a Bitmap for later display then. CMYKBitmap misses some of Bitmap's features, such as shared memory support, high-dpi scaling capability, etc.
2024-01-08 01:29:24 +00:00
private:
CMYKBitmap(IntSize const& size, ByteBuffer data)
: m_size(size)
, m_data(move(data))
{
}
IntSize m_size;
ByteBuffer m_data;
LibGfx/JPEG+CMYKBitmap: Extract the CMYK to RGB conversion code Right now, the JPEG decoder is the only one supporting CMYK, but that won't last for long. So, let's move the conversion to CMYKBitmap.
2024-01-18 21:59:42 +00:00
mutable RefPtr<Bitmap> m_rgb_bitmap;
LibGfx: Add CMYKBitmap This is a simple container for 2d CMYK data. This is a new class instead of a new format in Bitmap because: * Almost all clients of Bitmap will want to deal with RGB data * It keeps the ARGB32 typedef working * Bitmap already does a lot of things The idea is that a few select places will be able to use CMYKBitmap and a color profile to do a better CMYK -> RGB conversion than an image decoder could do, and then store the result in a Bitmap for later display then. CMYKBitmap misses some of Bitmap's features, such as shared memory support, high-dpi scaling capability, etc.
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};
inline CMYK* CMYKBitmap::scanline(int y)
{
VERIFY(y >= 0 && y < m_size.height());
return reinterpret_cast<CMYK*>(m_data.data() + y * m_size.width() * sizeof(CMYK));
}
inline CMYK const* CMYKBitmap::scanline(int y) const
{
VERIFY(y >= 0 && y < m_size.height());
return reinterpret_cast<CMYK const*>(m_data.data() + y * m_size.width() * sizeof(CMYK));
}
inline CMYK* CMYKBitmap::begin()
{
return reinterpret_cast<CMYK*>(m_data.data());
}
inline CMYK* CMYKBitmap::end()
{
LibGfx: Add data_size() accessors to Bitmap and CMYKBitmap These return the size of the data in bytes.
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return reinterpret_cast<CMYK*>(m_data.data() + data_size());
LibGfx: Add CMYKBitmap This is a simple container for 2d CMYK data. This is a new class instead of a new format in Bitmap because: * Almost all clients of Bitmap will want to deal with RGB data * It keeps the ARGB32 typedef working * Bitmap already does a lot of things The idea is that a few select places will be able to use CMYKBitmap and a color profile to do a better CMYK -> RGB conversion than an image decoder could do, and then store the result in a Bitmap for later display then. CMYKBitmap misses some of Bitmap's features, such as shared memory support, high-dpi scaling capability, etc.
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}
}
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