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da72652618
Currently we can only use the gfx.color_management.force_srgb pref to force all images to sRGB, or just accept device space. It would be nice to be able to test device space in our tests, as well as sRGB. This patch adds a surface flag which allows us to selectively output sRGB. This will also be useful for clipboard and re-encoding purposes, since they want a neutral output. In an ideal world we would just output the color profile and the pixel data in the original color space, but for now this is a relatively simple approach that works on all platforms and interops well with all applications. Differential Revision: https://phabricator.services.mozilla.com/D65734 --HG-- extra : moz-landing-system : lando
72 lines
2.2 KiB
C++
72 lines
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_image_SurfaceFlags_h
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#define mozilla_image_SurfaceFlags_h
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#include "imgIContainer.h"
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#include "mozilla/TypedEnumBits.h"
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namespace mozilla {
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namespace image {
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/**
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* Flags that change the output a decoder generates. Because different
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* combinations of these flags result in logically different surfaces, these
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* flags must be taken into account in SurfaceCache lookups.
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*/
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enum class SurfaceFlags : uint8_t {
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NO_PREMULTIPLY_ALPHA = 1 << 0,
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NO_COLORSPACE_CONVERSION = 1 << 1,
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TO_SRGB_COLORSPACE = 2 << 1,
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};
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MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(SurfaceFlags)
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/**
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* @return the default set of surface flags.
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*/
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inline SurfaceFlags DefaultSurfaceFlags() { return SurfaceFlags(); }
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/**
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* Given a set of imgIContainer FLAG_* flags, returns a set of SurfaceFlags with
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* the corresponding flags set.
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*/
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inline SurfaceFlags ToSurfaceFlags(uint32_t aFlags) {
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SurfaceFlags flags = DefaultSurfaceFlags();
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if (aFlags & imgIContainer::FLAG_DECODE_NO_PREMULTIPLY_ALPHA) {
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flags |= SurfaceFlags::NO_PREMULTIPLY_ALPHA;
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}
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if (aFlags & imgIContainer::FLAG_DECODE_NO_COLORSPACE_CONVERSION) {
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flags |= SurfaceFlags::NO_COLORSPACE_CONVERSION;
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}
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if (aFlags & imgIContainer::FLAG_DECODE_TO_SRGB_COLORSPACE) {
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flags |= SurfaceFlags::TO_SRGB_COLORSPACE;
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}
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return flags;
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}
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/**
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* Given a set of SurfaceFlags, returns a set of imgIContainer FLAG_* flags with
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* the corresponding flags set.
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*/
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inline uint32_t FromSurfaceFlags(SurfaceFlags aFlags) {
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uint32_t flags = imgIContainer::DECODE_FLAGS_DEFAULT;
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if (aFlags & SurfaceFlags::NO_PREMULTIPLY_ALPHA) {
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flags |= imgIContainer::FLAG_DECODE_NO_PREMULTIPLY_ALPHA;
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}
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if (aFlags & SurfaceFlags::NO_COLORSPACE_CONVERSION) {
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flags |= imgIContainer::FLAG_DECODE_NO_COLORSPACE_CONVERSION;
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}
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if (aFlags & SurfaceFlags::TO_SRGB_COLORSPACE) {
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flags |= imgIContainer::FLAG_DECODE_TO_SRGB_COLORSPACE;
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}
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return flags;
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}
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} // namespace image
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} // namespace mozilla
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#endif // mozilla_image_SurfaceFlags_h
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