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158 lines
5.0 KiB
158 lines
5.0 KiB
/* |
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* Copyright 2018 The Android Open Source Project |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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/** |
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* @file data_space.h |
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*/ |
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#ifndef ANDROID_DATA_SPACE_H |
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#define ANDROID_DATA_SPACE_H |
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#include <inttypes.h> |
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#include <sys/cdefs.h> |
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__BEGIN_DECLS |
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/** |
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* ADataSpace. |
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*/ |
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enum ADataSpace { |
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/** |
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* Default-assumption data space, when not explicitly specified. |
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* |
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* It is safest to assume the buffer is an image with sRGB primaries and |
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* encoding ranges, but the consumer and/or the producer of the data may |
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* simply be using defaults. No automatic gamma transform should be |
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* expected, except for a possible display gamma transform when drawn to a |
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* screen. |
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*/ |
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ADATASPACE_UNKNOWN = 0, |
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/** |
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* scRGB linear encoding: |
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* |
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* The red, green, and blue components are stored in extended sRGB space, |
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* but are linear, not gamma-encoded. |
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* The RGB primaries and the white point are the same as BT.709. |
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* |
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* The values are floating point. |
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* A pixel value of 1.0, 1.0, 1.0 corresponds to sRGB white (D65) at 80 nits. |
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* Values beyond the range [0.0 - 1.0] would correspond to other colors |
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* spaces and/or HDR content. |
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*/ |
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ADATASPACE_SCRGB_LINEAR = 406913024, // STANDARD_BT709 | TRANSFER_LINEAR | RANGE_EXTENDED |
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/** |
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* sRGB gamma encoding: |
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* |
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* The red, green and blue components are stored in sRGB space, and |
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* converted to linear space when read, using the SRGB transfer function |
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* for each of the R, G and B components. When written, the inverse |
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* transformation is performed. |
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* |
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* The alpha component, if present, is always stored in linear space and |
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* is left unmodified when read or written. |
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* |
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* Use full range and BT.709 standard. |
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*/ |
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ADATASPACE_SRGB = 142671872, // STANDARD_BT709 | TRANSFER_SRGB | RANGE_FULL |
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/** |
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* scRGB: |
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* |
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* The red, green, and blue components are stored in extended sRGB space, |
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* and gamma-encoded using the SRGB transfer function. |
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* The RGB primaries and the white point are the same as BT.709. |
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* |
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* The values are floating point. |
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* A pixel value of 1.0, 1.0, 1.0 corresponds to sRGB white (D65) at 80 nits. |
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* Values beyond the range [0.0 - 1.0] would correspond to other colors |
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* spaces and/or HDR content. |
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*/ |
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ADATASPACE_SCRGB = 411107328, // STANDARD_BT709 | TRANSFER_SRGB | RANGE_EXTENDED |
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/** |
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* Display P3 |
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* |
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* Use same primaries and white-point as DCI-P3 |
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* but sRGB transfer function. |
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*/ |
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ADATASPACE_DISPLAY_P3 = 143261696, // STANDARD_DCI_P3 | TRANSFER_SRGB | RANGE_FULL |
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/** |
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* ITU-R Recommendation 2020 (BT.2020) |
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* |
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* Ultra High-definition television |
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* |
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* Use full range, SMPTE 2084 (PQ) transfer and BT2020 standard |
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*/ |
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ADATASPACE_BT2020_PQ = 163971072, // STANDARD_BT2020 | TRANSFER_ST2084 | RANGE_FULL |
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/** |
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* Adobe RGB |
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* |
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* Use full range, gamma 2.2 transfer and Adobe RGB primaries |
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* Note: Application is responsible for gamma encoding the data as |
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* a 2.2 gamma encoding is not supported in HW. |
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*/ |
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ADATASPACE_ADOBE_RGB = 151715840, // STANDARD_ADOBE_RGB | TRANSFER_GAMMA2_2 | RANGE_FULL |
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/** |
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* ITU-R Recommendation 2020 (BT.2020) |
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* |
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* Ultra High-definition television |
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* |
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* Use full range, BT.709 transfer and BT2020 standard |
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*/ |
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ADATASPACE_BT2020 = 147193856, // STANDARD_BT2020 | TRANSFER_SMPTE_170M | RANGE_FULL |
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/** |
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* ITU-R Recommendation 709 (BT.709) |
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* |
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* High-definition television |
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* |
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* Use limited range, BT.709 transfer and BT.709 standard. |
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*/ |
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ADATASPACE_BT709 = 281083904, // STANDARD_BT709 | TRANSFER_SMPTE_170M | RANGE_LIMITED |
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/** |
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* SMPTE EG 432-1 and SMPTE RP 431-2. |
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* |
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* Digital Cinema DCI-P3 |
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* |
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* Use full range, gamma 2.6 transfer and D65 DCI-P3 standard |
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* Note: Application is responsible for gamma encoding the data as |
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* a 2.6 gamma encoding is not supported in HW. |
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*/ |
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ADATASPACE_DCI_P3 = 155844608, // STANDARD_DCI_P3 | TRANSFER_GAMMA2_6 | RANGE_FULL |
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/** |
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* sRGB linear encoding: |
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* |
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* The red, green, and blue components are stored in sRGB space, but |
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* are linear, not gamma-encoded. |
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* The RGB primaries and the white point are the same as BT.709. |
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* |
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* The values are encoded using the full range ([0,255] for 8-bit) for all |
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* components. |
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*/ |
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ADATASPACE_SRGB_LINEAR = 138477568, // STANDARD_BT709 | TRANSFER_LINEAR | RANGE_FULL |
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}; |
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__END_DECLS |
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#endif // ANDROID_DATA_SPACE_H
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