/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/** * Flags that change the output a decoder generates. Because different * combinations of these flags result in logically different surfaces, these * flags must be taken into account in SurfaceCache lookups.
*/ enumclass SurfaceFlags : uint8_t {
NO_PREMULTIPLY_ALPHA = 1 << 0,
NO_COLORSPACE_CONVERSION = 1 << 1,
TO_SRGB_COLORSPACE = 1 << 2,
RECORD_BLOB = 1 << 3,
};
MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(SurfaceFlags)
/** * @return the default set of surface flags.
*/ inline SurfaceFlags DefaultSurfaceFlags() { return SurfaceFlags(); }
/** * Given a set of imgIContainer FLAG_* flags, returns a set of SurfaceFlags with * the corresponding flags set.
*/ inline SurfaceFlags ToSurfaceFlags(uint32_t aFlags) {
SurfaceFlags flags = DefaultSurfaceFlags(); if (aFlags & imgIContainer::FLAG_DECODE_NO_PREMULTIPLY_ALPHA) {
flags |= SurfaceFlags::NO_PREMULTIPLY_ALPHA;
} if (aFlags & imgIContainer::FLAG_DECODE_NO_COLORSPACE_CONVERSION) {
flags |= SurfaceFlags::NO_COLORSPACE_CONVERSION;
} if (aFlags & imgIContainer::FLAG_DECODE_TO_SRGB_COLORSPACE) {
flags |= SurfaceFlags::TO_SRGB_COLORSPACE;
} if (aFlags & imgIContainer::FLAG_RECORD_BLOB) {
flags |= SurfaceFlags::RECORD_BLOB;
} return flags;
}
/** * Given a set of SurfaceFlags, returns a set of imgIContainer FLAG_* flags with * the corresponding flags set.
*/ inline uint32_t FromSurfaceFlags(SurfaceFlags aFlags) {
uint32_t flags = imgIContainer::DECODE_FLAGS_DEFAULT; if (aFlags & SurfaceFlags::NO_PREMULTIPLY_ALPHA) {
flags |= imgIContainer::FLAG_DECODE_NO_PREMULTIPLY_ALPHA;
} if (aFlags & SurfaceFlags::NO_COLORSPACE_CONVERSION) {
flags |= imgIContainer::FLAG_DECODE_NO_COLORSPACE_CONVERSION;
} if (aFlags & SurfaceFlags::TO_SRGB_COLORSPACE) {
flags |= imgIContainer::FLAG_DECODE_TO_SRGB_COLORSPACE;
} if (aFlags & SurfaceFlags::RECORD_BLOB) {
flags |= imgIContainer::FLAG_RECORD_BLOB;
} return flags;
}
} // namespace image
} // namespace mozilla
#endif// mozilla_image_SurfaceFlags_h
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