| /* |
| * 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. |
| */ |
| |
| /** |
| * @defgroup ADataSpace Data Space |
| * |
| * ADataSpace describes how to interpret colors. |
| * @{ |
| */ |
| |
| /** |
| * @file data_space.h |
| */ |
| |
| #ifndef ANDROID_DATA_SPACE_H |
| #define ANDROID_DATA_SPACE_H |
| |
| #include <inttypes.h> |
| #include <stdint.h> |
| |
| #include <sys/cdefs.h> |
| |
| __BEGIN_DECLS |
| |
| /** |
| * ADataSpace. |
| */ |
| enum ADataSpace : int32_t { |
| /** |
| * 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, |
| |
| /** |
| * Color-description aspects |
| * |
| * The following aspects define various characteristics of the color |
| * specification. These represent bitfields, so that a data space value |
| * can specify each of them independently. |
| */ |
| |
| /** |
| * Standard aspect |
| * |
| * Defines the chromaticity coordinates of the source primaries in terms of |
| * the CIE 1931 definition of x and y specified in ISO 11664-1. |
| */ |
| STANDARD_MASK = 63 << 16, |
| |
| /** |
| * Chromacity coordinates are unknown or are determined by the application. |
| * Implementations shall use the following suggested standards: |
| * |
| * All YCbCr formats: BT709 if size is 720p or larger (since most video |
| * content is letterboxed this corresponds to width is |
| * 1280 or greater, or height is 720 or greater). |
| * BT601_625 if size is smaller than 720p or is JPEG. |
| * All RGB formats: BT709. |
| * |
| * For all other formats standard is undefined, and implementations should use |
| * an appropriate standard for the data represented. |
| */ |
| STANDARD_UNSPECIFIED = 0 << 16, |
| |
| /** |
| * <pre> |
| * Primaries: x y |
| * green 0.300 0.600 |
| * blue 0.150 0.060 |
| * red 0.640 0.330 |
| * white (D65) 0.3127 0.3290</pre> |
| * |
| * Use the unadjusted KR = 0.2126, KB = 0.0722 luminance interpretation |
| * for RGB conversion. |
| */ |
| STANDARD_BT709 = 1 << 16, |
| |
| /** |
| * <pre> |
| * Primaries: x y |
| * green 0.290 0.600 |
| * blue 0.150 0.060 |
| * red 0.640 0.330 |
| * white (D65) 0.3127 0.3290</pre> |
| * |
| * KR = 0.299, KB = 0.114. This adjusts the luminance interpretation |
| * for RGB conversion from the one purely determined by the primaries |
| * to minimize the color shift into RGB space that uses BT.709 |
| * primaries. |
| */ |
| STANDARD_BT601_625 = 2 << 16, |
| |
| /** |
| * <pre> |
| * Primaries: x y |
| * green 0.290 0.600 |
| * blue 0.150 0.060 |
| * red 0.640 0.330 |
| * white (D65) 0.3127 0.3290</pre> |
| * |
| * Use the unadjusted KR = 0.222, KB = 0.071 luminance interpretation |
| * for RGB conversion. |
| */ |
| STANDARD_BT601_625_UNADJUSTED = 3 << 16, |
| |
| /** |
| * <pre> |
| * Primaries: x y |
| * green 0.310 0.595 |
| * blue 0.155 0.070 |
| * red 0.630 0.340 |
| * white (D65) 0.3127 0.3290</pre> |
| * |
| * KR = 0.299, KB = 0.114. This adjusts the luminance interpretation |
| * for RGB conversion from the one purely determined by the primaries |
| * to minimize the color shift into RGB space that uses BT.709 |
| * primaries. |
| */ |
| STANDARD_BT601_525 = 4 << 16, |
| |
| /** |
| * <pre> |
| * Primaries: x y |
| * green 0.310 0.595 |
| * blue 0.155 0.070 |
| * red 0.630 0.340 |
| * white (D65) 0.3127 0.3290</pre> |
| * |
| * Use the unadjusted KR = 0.212, KB = 0.087 luminance interpretation |
| * for RGB conversion (as in SMPTE 240M). |
| */ |
| STANDARD_BT601_525_UNADJUSTED = 5 << 16, |
| |
| /** |
| * <pre> |
| * Primaries: x y |
| * green 0.170 0.797 |
| * blue 0.131 0.046 |
| * red 0.708 0.292 |
| * white (D65) 0.3127 0.3290</pre> |
| * |
| * Use the unadjusted KR = 0.2627, KB = 0.0593 luminance interpretation |
| * for RGB conversion. |
| */ |
| STANDARD_BT2020 = 6 << 16, |
| |
| /** |
| * <pre> |
| * Primaries: x y |
| * green 0.170 0.797 |
| * blue 0.131 0.046 |
| * red 0.708 0.292 |
| * white (D65) 0.3127 0.3290</pre> |
| * |
| * Use the unadjusted KR = 0.2627, KB = 0.0593 luminance interpretation |
| * for RGB conversion using the linear domain. |
| */ |
| STANDARD_BT2020_CONSTANT_LUMINANCE = 7 << 16, |
| |
| /** |
| * <pre> |
| * Primaries: x y |
| * green 0.21 0.71 |
| * blue 0.14 0.08 |
| * red 0.67 0.33 |
| * white (C) 0.310 0.316</pre> |
| * |
| * Use the unadjusted KR = 0.30, KB = 0.11 luminance interpretation |
| * for RGB conversion. |
| */ |
| STANDARD_BT470M = 8 << 16, |
| |
| /** |
| * <pre> |
| * Primaries: x y |
| * green 0.243 0.692 |
| * blue 0.145 0.049 |
| * red 0.681 0.319 |
| * white (C) 0.310 0.316</pre> |
| * |
| * Use the unadjusted KR = 0.254, KB = 0.068 luminance interpretation |
| * for RGB conversion. |
| */ |
| STANDARD_FILM = 9 << 16, |
| |
| /** |
| * SMPTE EG 432-1 and SMPTE RP 431-2. (DCI-P3) |
| * <pre> |
| * Primaries: x y |
| * green 0.265 0.690 |
| * blue 0.150 0.060 |
| * red 0.680 0.320 |
| * white (D65) 0.3127 0.3290</pre> |
| */ |
| STANDARD_DCI_P3 = 10 << 16, |
| |
| /** |
| * Adobe RGB |
| * <pre> |
| * Primaries: x y |
| * green 0.210 0.710 |
| * blue 0.150 0.060 |
| * red 0.640 0.330 |
| * white (D65) 0.3127 0.3290</pre> |
| */ |
| STANDARD_ADOBE_RGB = 11 << 16, |
| |
| /** |
| * Transfer aspect |
| * |
| * Transfer characteristics are the opto-electronic transfer characteristic |
| * at the source as a function of linear optical intensity (luminance). |
| * |
| * For digital signals, E corresponds to the recorded value. Normally, the |
| * transfer function is applied in RGB space to each of the R, G and B |
| * components independently. This may result in color shift that can be |
| * minized by applying the transfer function in Lab space only for the L |
| * component. Implementation may apply the transfer function in RGB space |
| * for all pixel formats if desired. |
| */ |
| TRANSFER_MASK = 31 << 22, |
| |
| /** |
| * Transfer characteristics are unknown or are determined by the |
| * application. |
| * |
| * Implementations should use the following transfer functions: |
| * |
| * For YCbCr formats: use TRANSFER_SMPTE_170M |
| * For RGB formats: use TRANSFER_SRGB |
| * |
| * For all other formats transfer function is undefined, and implementations |
| * should use an appropriate standard for the data represented. |
| */ |
| TRANSFER_UNSPECIFIED = 0 << 22, |
| |
| /** |
| * Linear transfer. |
| * <pre> |
| * Transfer characteristic curve: |
| * E = L |
| * L - luminance of image 0 <= L <= 1 for conventional colorimetry |
| * E - corresponding electrical signal</pre> |
| */ |
| TRANSFER_LINEAR = 1 << 22, |
| |
| /** |
| * sRGB transfer. |
| * <pre> |
| * Transfer characteristic curve: |
| * E = 1.055 * L^(1/2.4) - 0.055 for 0.0031308 <= L <= 1 |
| * = 12.92 * L for 0 <= L < 0.0031308 |
| * L - luminance of image 0 <= L <= 1 for conventional colorimetry |
| * E - corresponding electrical signal</pre> |
| */ |
| TRANSFER_SRGB = 2 << 22, |
| |
| /** |
| * SMPTE 170M transfer. |
| * <pre> |
| * Transfer characteristic curve: |
| * E = 1.099 * L ^ 0.45 - 0.099 for 0.018 <= L <= 1 |
| * = 4.500 * L for 0 <= L < 0.018 |
| * L - luminance of image 0 <= L <= 1 for conventional colorimetry |
| * E - corresponding electrical signal</pre> |
| */ |
| TRANSFER_SMPTE_170M = 3 << 22, |
| |
| /** |
| * Display gamma 2.2. |
| * <pre> |
| * Transfer characteristic curve: |
| * E = L ^ (1/2.2) |
| * L - luminance of image 0 <= L <= 1 for conventional colorimetry |
| * E - corresponding electrical signal</pre> |
| */ |
| TRANSFER_GAMMA2_2 = 4 << 22, |
| |
| /** |
| * Display gamma 2.6. |
| * <pre> |
| * Transfer characteristic curve: |
| * E = L ^ (1/2.6) |
| * L - luminance of image 0 <= L <= 1 for conventional colorimetry |
| * E - corresponding electrical signal</pre> |
| */ |
| TRANSFER_GAMMA2_6 = 5 << 22, |
| |
| /** |
| * Display gamma 2.8. |
| * <pre> |
| * Transfer characteristic curve: |
| * E = L ^ (1/2.8) |
| * L - luminance of image 0 <= L <= 1 for conventional colorimetry |
| * E - corresponding electrical signal</pre> |
| */ |
| TRANSFER_GAMMA2_8 = 6 << 22, |
| |
| /** |
| * SMPTE ST 2084 (Dolby Perceptual Quantizer). |
| * <pre> |
| * Transfer characteristic curve: |
| * E = ((c1 + c2 * L^n) / (1 + c3 * L^n)) ^ m |
| * c1 = c3 - c2 + 1 = 3424 / 4096 = 0.8359375 |
| * c2 = 32 * 2413 / 4096 = 18.8515625 |
| * c3 = 32 * 2392 / 4096 = 18.6875 |
| * m = 128 * 2523 / 4096 = 78.84375 |
| * n = 0.25 * 2610 / 4096 = 0.1593017578125 |
| * L - luminance of image 0 <= L <= 1 for HDR colorimetry. |
| * L = 1 corresponds to 10000 cd/m2 |
| * E - corresponding electrical signal</pre> |
| */ |
| TRANSFER_ST2084 = 7 << 22, |
| |
| /** |
| * ARIB STD-B67 Hybrid Log Gamma. |
| * <pre> |
| * Transfer characteristic curve: |
| * E = r * L^0.5 for 0 <= L <= 1 |
| * = a * ln(L - b) + c for 1 < L |
| * a = 0.17883277 |
| * b = 0.28466892 |
| * c = 0.55991073 |
| * r = 0.5 |
| * L - luminance of image 0 <= L for HDR colorimetry. L = 1 corresponds |
| * to reference white level of 100 cd/m2 |
| * E - corresponding electrical signal</pre> |
| */ |
| TRANSFER_HLG = 8 << 22, |
| |
| /** |
| * Range aspect |
| * |
| * Defines the range of values corresponding to the unit range of 0-1. |
| * This is defined for YCbCr only, but can be expanded to RGB space. |
| */ |
| RANGE_MASK = 7 << 27, |
| |
| /** |
| * Range is unknown or are determined by the application. Implementations |
| * shall use the following suggested ranges: |
| * |
| * All YCbCr formats: limited range. |
| * All RGB or RGBA formats (including RAW and Bayer): full range. |
| * All Y formats: full range |
| * |
| * For all other formats range is undefined, and implementations should use |
| * an appropriate range for the data represented. |
| */ |
| RANGE_UNSPECIFIED = 0 << 27, |
| |
| /** |
| * Full range uses all values for Y, Cb and Cr from |
| * 0 to 2^b-1, where b is the bit depth of the color format. |
| */ |
| RANGE_FULL = 1 << 27, |
| |
| /** |
| * Limited range uses values 16/256*2^b to 235/256*2^b for Y, and |
| * 1/16*2^b to 15/16*2^b for Cb, Cr, R, G and B, where b is the bit depth of |
| * the color format. |
| * |
| * E.g. For 8-bit-depth formats: |
| * Luma (Y) samples should range from 16 to 235, inclusive |
| * Chroma (Cb, Cr) samples should range from 16 to 240, inclusive |
| * |
| * For 10-bit-depth formats: |
| * Luma (Y) samples should range from 64 to 940, inclusive |
| * Chroma (Cb, Cr) samples should range from 64 to 960, inclusive |
| */ |
| RANGE_LIMITED = 2 << 27, |
| |
| /** |
| * Extended range is used for scRGB. Intended for use with |
| * floating point pixel formats. [0.0 - 1.0] is the standard |
| * sRGB space. Values outside the range 0.0 - 1.0 can encode |
| * color outside the sRGB gamut. |
| * Used to blend / merge multiple dataspaces on a single display. |
| */ |
| RANGE_EXTENDED = 3 << 27, |
| |
| /** |
| * scRGB linear encoding |
| * |
| * The red, green, and blue components are stored in extended sRGB space, |
| * but are linear, not gamma-encoded. |
| * |
| * 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. |
| * |
| * Uses extended range, linear transfer and BT.709 standard. |
| */ |
| 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. |
| * |
| * Uses full range, sRGB transfer 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 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. |
| * |
| * Uses extended range, sRGB transfer and BT.709 standard. |
| */ |
| ADATASPACE_SCRGB = 411107328, // STANDARD_BT709 | TRANSFER_SRGB | RANGE_EXTENDED |
| |
| /** |
| * Display P3 |
| * |
| * Uses full range, sRGB transfer and D65 DCI-P3 standard. |
| */ |
| ADATASPACE_DISPLAY_P3 = 143261696, // STANDARD_DCI_P3 | TRANSFER_SRGB | RANGE_FULL |
| |
| /** |
| * ITU-R Recommendation 2020 (BT.2020) |
| * |
| * Ultra High-definition television |
| * |
| * Uses full range, SMPTE 2084 (PQ) transfer and BT2020 standard. |
| */ |
| ADATASPACE_BT2020_PQ = 163971072, // STANDARD_BT2020 | TRANSFER_ST2084 | RANGE_FULL |
| |
| /** |
| * ITU-R Recommendation 2020 (BT.2020) |
| * |
| * Ultra High-definition television |
| * |
| * Uses limited range, SMPTE 2084 (PQ) transfer and BT2020 standard. |
| */ |
| ADATASPACE_BT2020_ITU_PQ = 298188800, // STANDARD_BT2020 | TRANSFER_ST2084 | RANGE_LIMITED |
| |
| /** |
| * Adobe RGB |
| * |
| * Uses full range, gamma 2.2 transfer and Adobe RGB standard. |
| * |
| * Note: Application is responsible for gamma encoding the data as |
| * a 2.2 gamma encoding is not supported in HW. |
| */ |
| ADATASPACE_ADOBE_RGB = 151715840, // STANDARD_ADOBE_RGB | TRANSFER_GAMMA2_2 | RANGE_FULL |
| |
| /** |
| * JPEG File Interchange Format (JFIF) |
| * |
| * Same model as BT.601-625, but all values (Y, Cb, Cr) range from 0 to 255. |
| * |
| * Uses full range, SMPTE 170M transfer and BT.601_625 standard. |
| */ |
| ADATASPACE_JFIF = 146931712, // STANDARD_BT601_625 | TRANSFER_SMPTE_170M | RANGE_FULL |
| |
| /** |
| * ITU-R Recommendation 601 (BT.601) - 625-line |
| * |
| * Standard-definition television, 625 Lines (PAL) |
| * |
| * Uses limited range, SMPTE 170M transfer and BT.601_625 standard. |
| */ |
| ADATASPACE_BT601_625 = 281149440, // STANDARD_BT601_625 | TRANSFER_SMPTE_170M | RANGE_LIMITED |
| |
| /** |
| * ITU-R Recommendation 601 (BT.601) - 525-line |
| * |
| * Standard-definition television, 525 Lines (NTSC) |
| * |
| * Uses limited range, SMPTE 170M transfer and BT.601_525 standard. |
| */ |
| ADATASPACE_BT601_525 = 281280512, // STANDARD_BT601_525 | TRANSFER_SMPTE_170M | RANGE_LIMITED |
| |
| /** |
| * ITU-R Recommendation 2020 (BT.2020) |
| * |
| * Ultra High-definition television |
| * |
| * Uses full range, SMPTE 170M transfer and BT2020 standard. |
| */ |
| ADATASPACE_BT2020 = 147193856, // STANDARD_BT2020 | TRANSFER_SMPTE_170M | RANGE_FULL |
| |
| /** |
| * ITU-R Recommendation 709 (BT.709) |
| * |
| * High-definition television |
| * |
| * Uses limited range, SMPTE 170M transfer and BT.709 standard. |
| */ |
| ADATASPACE_BT709 = 281083904, // STANDARD_BT709 | TRANSFER_SMPTE_170M | RANGE_LIMITED |
| |
| /** |
| * SMPTE EG 432-1 and SMPTE RP 431-2 |
| * |
| * Digital Cinema DCI-P3 |
| * |
| * Uses full range, gamma 2.6 transfer and D65 DCI-P3 standard. |
| * |
| * Note: Application is responsible for gamma encoding the data as |
| * a 2.6 gamma encoding is not supported in HW. |
| */ |
| ADATASPACE_DCI_P3 = 155844608, // STANDARD_DCI_P3 | TRANSFER_GAMMA2_6 | RANGE_FULL |
| |
| /** |
| * sRGB linear encoding |
| * |
| * The red, green, and blue components are stored in sRGB space, but |
| * are linear, not gamma-encoded. |
| * The RGB primaries and the white point are the same as BT.709. |
| * |
| * The values are encoded using the full range ([0,255] for 8-bit) for all |
| * components. |
| * |
| * Uses full range, linear transfer and BT.709 standard. |
| */ |
| ADATASPACE_SRGB_LINEAR = 138477568, // STANDARD_BT709 | TRANSFER_LINEAR | RANGE_FULL |
| |
| /** |
| * Hybrid Log Gamma encoding |
| * |
| * Uses full range, hybrid log gamma transfer and BT2020 standard. |
| */ |
| ADATASPACE_BT2020_HLG = 168165376, // STANDARD_BT2020 | TRANSFER_HLG | RANGE_FULL |
| |
| /** |
| * ITU Hybrid Log Gamma encoding |
| * |
| * Uses limited range, hybrid log gamma transfer and BT2020 standard. |
| */ |
| ADATASPACE_BT2020_ITU_HLG = 302383104, // STANDARD_BT2020 | TRANSFER_HLG | RANGE_LIMITED |
| |
| /** |
| * Depth |
| * |
| * This value is valid with formats HAL_PIXEL_FORMAT_Y16 and HAL_PIXEL_FORMAT_BLOB. |
| */ |
| ADATASPACE_DEPTH = 4096, |
| |
| /** |
| * ISO 16684-1:2011(E) Dynamic Depth |
| * |
| * Embedded depth metadata following the dynamic depth specification. |
| */ |
| ADATASPACE_DYNAMIC_DEPTH = 4098 |
| }; |
| |
| __END_DECLS |
| |
| #endif // ANDROID_DATA_SPACE_H |
| |
| /** @} */ |
