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/*
* Copyright 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file data_space.h
*/
#ifndef ANDROID_DATA_SPACE_H
#define ANDROID_DATA_SPACE_H
#include <inttypes.h>
#include <sys/cdefs.h>
__BEGIN_DECLS
/**
* ADataSpace.
*/
enum ADataSpace {
/**
* Default-assumption data space, when not explicitly specified.
*
* It is safest to assume the buffer is an image with sRGB primaries and
* encoding ranges, but the consumer and/or the producer of the data may
* simply be using defaults. No automatic gamma transform should be
* expected, except for a possible display gamma transform when drawn to a
* screen.
*/
ADATASPACE_UNKNOWN = 0,
/**
* scRGB linear encoding:
*
* The red, green, and blue components are stored in extended sRGB space,
* but are linear, not gamma-encoded.
* The RGB primaries and the white point are the same as BT.709.
*
* The values are floating point.
* A pixel value of 1.0, 1.0, 1.0 corresponds to sRGB white (D65) at 80 nits.
* Values beyond the range [0.0 - 1.0] would correspond to other colors
* spaces and/or HDR content.
*/
ADATASPACE_SCRGB_LINEAR = 406913024, // STANDARD_BT709 | TRANSFER_LINEAR | RANGE_EXTENDED
/**
* sRGB gamma encoding:
*
* The red, green and blue components are stored in sRGB space, and
* converted to linear space when read, using the SRGB transfer function
* for each of the R, G and B components. When written, the inverse
* transformation is performed.
*
* The alpha component, if present, is always stored in linear space and
* is left unmodified when read or written.
*
* Use full range and BT.709 standard.
*/
ADATASPACE_SRGB = 142671872, // STANDARD_BT709 | TRANSFER_SRGB | RANGE_FULL
/**
* scRGB:
*
* The red, green, and blue components are stored in extended sRGB space,
* and gamma-encoded using the SRGB transfer function.
* The RGB primaries and the white point are the same as BT.709.
*
* The values are floating point.
* A pixel value of 1.0, 1.0, 1.0 corresponds to sRGB white (D65) at 80 nits.
* Values beyond the range [0.0 - 1.0] would correspond to other colors
* spaces and/or HDR content.
*/
ADATASPACE_SCRGB = 411107328, // STANDARD_BT709 | TRANSFER_SRGB | RANGE_EXTENDED
/**
* Display P3
*
* Use same primaries and white-point as DCI-P3
* but sRGB transfer function.
*/
ADATASPACE_DISPLAY_P3 = 143261696, // STANDARD_DCI_P3 | TRANSFER_SRGB | RANGE_FULL
/**
* ITU-R Recommendation 2020 (BT.2020)
*
* Ultra High-definition television
*
* Use full range, SMPTE 2084 (PQ) transfer and BT2020 standard
*/
ADATASPACE_BT2020_PQ = 163971072, // STANDARD_BT2020 | TRANSFER_ST2084 | RANGE_FULL
};
__END_DECLS
#endif // ANDROID_DATA_SPACE_H
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