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script-astra/Android/Sdk/sources/android-35/android/hardware/DataSpace.java

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/*
* Copyright 2021 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.
*/
package android.hardware;
import android.annotation.IntDef;
import android.view.SurfaceControl;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
/**
* DataSpace identifies three components of colors - standard (primaries), transfer and range.
*
* <p>A DataSpace describes how buffer data, such as from an {@link android.media.Image Image}
* or a {@link android.hardware.HardwareBuffer HardwareBuffer}
* should be interpreted by both applications and typical hardware.</p>
*
* <p>As buffer information is not guaranteed to be representative of color information,
* while DataSpace is typically used to describe three aspects of interpreting colors,
* some DataSpaces may describe other typical interpretations of buffer data
* such as depth information.</p>
*
* <p>Note that while {@link android.graphics.ColorSpace ColorSpace} and {@code DataSpace}
* are similar concepts, they are not equivalent. Not all ColorSpaces,
* such as {@link android.graphics.ColorSpace.Named#ACES ColorSpace.Named.ACES},
* are able to be understood by typical hardware blocks so they cannot be DataSpaces.</p>
*
* <h3>Standard aspect</h3>
*
* <p>Defines the chromaticity coordinates of the source primaries in terms of
* the CIE 1931 definition of x and y specified in ISO 11664-1.</p>
*
* <h3>Transfer aspect</h3>
*
* <p>Transfer characteristics are the opto-electronic transfer characteristic
* at the source as a function of linear optical intensity (luminance).</p>
*
* <p>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.</p>
*
* <h3>Range aspect</h3>
*
* <p>Defines the range of values corresponding to the unit range of {@code 0-1}.</p>
*/
public final class DataSpace {
/** @hide */
@Retention(RetentionPolicy.SOURCE)
@IntDef(flag = true, value = {
STANDARD_UNSPECIFIED,
STANDARD_BT709,
STANDARD_BT601_625,
STANDARD_BT601_625_UNADJUSTED,
STANDARD_BT601_525,
STANDARD_BT601_525_UNADJUSTED,
STANDARD_BT2020,
STANDARD_BT2020_CONSTANT_LUMINANCE,
STANDARD_BT470M,
STANDARD_FILM,
STANDARD_DCI_P3,
STANDARD_ADOBE_RGB
})
public @interface DataSpaceStandard {};
private static final int STANDARD_MASK = 63 << 16;
/**
* Chromacity coordinates are unknown or are determined by the application.
*/
public static final int STANDARD_UNSPECIFIED = 0 << 16;
/**
* Use the unadjusted {@code KR = 0.2126}, {@code KB = 0.0722} luminance interpretation
* for RGB conversion.
*
* <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>
*/
public static final int STANDARD_BT709 = 1 << 16;
/**
* Use the adjusted {@code KR = 0.299}, {@code KB = 0.114} 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.
*
* <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>
*/
public static final int STANDARD_BT601_625 = 2 << 16;
/**
* Use the unadjusted {@code KR = 0.222}, {@code KB = 0.071} luminance interpretation
* for RGB conversion.
*
* <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>
*/
public static final int STANDARD_BT601_625_UNADJUSTED = 3 << 16;
/**
* Use the adjusted {@code KR = 0.299}, {@code KB = 0.114} 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.
*
* <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>
*/
public static final int STANDARD_BT601_525 = 4 << 16;
/**
* Use the unadjusted {@code KR = 0.212}, {@code KB = 0.087} luminance interpretation
* for RGB conversion (as in SMPTE 240M).
*
* <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>
*/
public static final int STANDARD_BT601_525_UNADJUSTED = 5 << 16;
/**
* Use the unadjusted {@code KR = 0.2627}, {@code KB = 0.0593} luminance interpretation
* for RGB conversion.
*
* <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>
*/
public static final int STANDARD_BT2020 = 6 << 16;
/**
* Use the unadjusted {@code KR = 0.2627}, {@code KB = 0.0593} luminance interpretation
* for RGB conversion using the linear domain.
*
* <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>
*/
public static final int STANDARD_BT2020_CONSTANT_LUMINANCE = 7 << 16;
/**
* Use the unadjusted {@code KR = 0.30}, {@code KB = 0.11} luminance interpretation
* for RGB conversion.
*
* <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>
*/
public static final int STANDARD_BT470M = 8 << 16;
/**
* Use the unadjusted {@code KR = 0.254}, {@code KB = 0.068} luminance interpretation
* for RGB conversion.
*
* <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>
*/
public static final int STANDARD_FILM = 9 << 16;
/**
* SMPTE EG 432-1 and SMPTE RP 431-2.
*
* <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>
*/
public static final int STANDARD_DCI_P3 = 10 << 16;
/**
* Adobe RGB primaries.
*
* <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>
*/
public static final int STANDARD_ADOBE_RGB = 11 << 16;
/** @hide */
@Retention(RetentionPolicy.SOURCE)
@IntDef(flag = true, value = {
TRANSFER_UNSPECIFIED,
TRANSFER_LINEAR,
TRANSFER_SRGB,
TRANSFER_SMPTE_170M,
TRANSFER_GAMMA2_2,
TRANSFER_GAMMA2_6,
TRANSFER_GAMMA2_8,
TRANSFER_ST2084,
TRANSFER_HLG
})
public @interface DataSpaceTransfer {};
private static final int TRANSFER_MASK = 31 << 22;
/**
* Transfer characteristics are unknown or are determined by the
* application.
*/
public static final int TRANSFER_UNSPECIFIED = 0 << 22;
/**
* Linear transfer.
*
* <pre>{@code
* Transfer characteristic curve:
* E = L
* L - luminance of image 0 <= L <= 1 for conventional colorimetry
* E - corresponding electrical signal}</pre>
*/
public static final int TRANSFER_LINEAR = 1 << 22;
/**
* sRGB transfer.
*
* <pre>{@code
* 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>
*
* Use for RGB formats.
*/
public static final int TRANSFER_SRGB = 2 << 22;
/**
* SMPTE 170M transfer.
*
* <pre>{@code
* 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>
*
* Use for YCbCr formats.
*/
public static final int TRANSFER_SMPTE_170M = 3 << 22;
/**
* Display gamma 2.2.
*
* <pre>{@code
* Transfer characteristic curve:
* E = L ^ (1/2.2)
* L - luminance of image 0 <= L <= 1 for conventional colorimetry
* E - corresponding electrical signal}</pre>
*/
public static final int TRANSFER_GAMMA2_2 = 4 << 22;
/**
* Display gamma 2.6.
*
* <pre>{@code
* Transfer characteristic curve:
* E = L ^ (1/2.6)
* L - luminance of image 0 <= L <= 1 for conventional colorimetry
* E - corresponding electrical signal}</pre>
*/
public static final int TRANSFER_GAMMA2_6 = 5 << 22;
/**
* Display gamma 2.8.
*
* <pre>{@code
* Transfer characteristic curve:
* E = L ^ (1/2.8)
* L - luminance of image 0 <= L <= 1 for conventional colorimetry
* E - corresponding electrical signal}</pre>
*/
public static final int TRANSFER_GAMMA2_8 = 6 << 22;
/**
* SMPTE ST 2084 (Dolby Perceptual Quantizer).
*
* <pre>{@code
* 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>
*/
public static final int TRANSFER_ST2084 = 7 << 22;
/**
* ARIB STD-B67 Hybrid Log Gamma.
*
* <pre>{@code
* 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>
*/
public static final int TRANSFER_HLG = 8 << 22;
/** @hide */
@Retention(RetentionPolicy.SOURCE)
@IntDef(flag = true, value = {
RANGE_UNSPECIFIED,
RANGE_FULL,
RANGE_LIMITED,
RANGE_EXTENDED
})
public @interface DataSpaceRange {};
private static final int RANGE_MASK = 7 << 27;
/**
* Range characteristics are unknown or are determined by the application.
*/
public static final int RANGE_UNSPECIFIED = 0 << 27;
/**
* Full range uses all values for Y, Cb and Cr from
* {@code 0} to {@code 2^b-1}, where b is the bit depth of the color format.
*/
public static final int RANGE_FULL = 1 << 27;
/**
* Limited range uses values {@code 16/256*2^b} to {@code 235/256*2^b} for Y, and
* {@code 1/16*2^b} to {@code 15/16*2^b} for Cb, Cr, R, G and B, where b is the bit depth of
* the color format.
*
* <p>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. </p>
*/
public static final int RANGE_LIMITED = 2 << 27;
/**
* Extended range can be used in combination with FP16 to communicate scRGB or with
* {@link android.view.SurfaceControl.Transaction#setExtendedRangeBrightness(SurfaceControl, float, float)}
* to indicate an HDR range.
*
* <p>When used with floating point pixel formats and #STANDARD_BT709 then [0.0 - 1.0] is the
* standard sRGB space and values outside the range [0.0 - 1.0] can encode
* color outside the sRGB gamut. [-0.5, 7.5] is the standard scRGB range.
* Used to blend/merge multiple dataspaces on a single display.</p>
*
* <p>As of {@link android.os.Build.VERSION_CODES#UPSIDE_DOWN_CAKE} this may be combined with
* {@link android.view.SurfaceControl.Transaction#setExtendedRangeBrightness(SurfaceControl, float, float)}
* and other formats such as {@link HardwareBuffer#RGBA_8888} or
* {@link HardwareBuffer#RGBA_1010102} to communicate a variable HDR brightness range</p>
*/
public static final int RANGE_EXTENDED = 3 << 27;
/**
* Depth.
*
* This value is valid with formats HAL_PIXEL_FORMAT_Y16 and HAL_PIXEL_FORMAT_BLOB.
*/
public static final int DATASPACE_DEPTH = 4096;
/**
* ISO 16684-1:2011(E) Dynamic Depth.
*
* Embedded depth metadata following the dynamic depth specification.
*/
public static final int DATASPACE_DYNAMIC_DEPTH = 4098;
/**
* High Efficiency Image File Format (HEIF).
*
* <p>This value is valid with {@link android.hardware.HardwareBuffer#BLOB HardwareBuffer.BLOB}
* format. The combination is an HEIC image encoded by HEIC or HEVC encoder according to
* ISO/IEC 23008-12.</p>
*/
public static final int DATASPACE_HEIF = 4100;
/**
* ISO/IEC TBD
*
* JPEG image with embedded recovery map following the Jpeg/R specification.
*
* <p>This value must always remain aligned with the public ImageFormat Jpeg/R definition and is
* valid with formats:
* HAL_PIXEL_FORMAT_BLOB: JPEG image encoded by Jpeg/R encoder according to ISO/IEC TBD.
* The image contains a standard SDR JPEG and a recovery map. Jpeg/R decoders can use the
* map to recover the input image.</p>
*/
public static final int DATASPACE_JPEG_R = 4101;
/** @hide */
@Retention(RetentionPolicy.SOURCE)
@IntDef(flag = true, value = {
DATASPACE_UNKNOWN,
DATASPACE_SCRGB_LINEAR,
DATASPACE_SRGB,
DATASPACE_SCRGB,
DATASPACE_DISPLAY_P3,
DATASPACE_BT2020_HLG,
DATASPACE_BT2020_PQ,
DATASPACE_ADOBE_RGB,
DATASPACE_JFIF,
DATASPACE_BT601_625,
DATASPACE_BT601_525,
DATASPACE_BT2020,
DATASPACE_BT709,
DATASPACE_DCI_P3,
DATASPACE_SRGB_LINEAR
})
public @interface ColorDataSpace {};
/**
* Default-assumption data space, when not explicitly specified.
*
* <p>It is safest to assume a 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.</p>
*/
public static final int DATASPACE_UNKNOWN = 0;
/**
* scRGB linear encoding.
*
* <p>Composed of the following -</p>
* <pre>
* Primaries: STANDARD_BT709
* Transfer: TRANSFER_LINEAR
* Range: RANGE_EXTENDED</pre>
*
* 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.
*/
public static final int DATASPACE_SCRGB_LINEAR = 406913024;
/**
* sRGB gamma encoding.
*
* <p>Composed of the following -</p>
* <pre>
* Primaries: STANDARD_BT709
* Transfer: TRANSFER_SRGB
* Range: RANGE_FULL</pre>
*
* 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.
*/
public static final int DATASPACE_SRGB = 142671872;
/**
* scRGB gamma encoding.
*
* <p>Composed of the following -</p>
* <pre>
* Primaries: STANDARD_BT709
* Transfer: TRANSFER_SRGB
* Range: RANGE_EXTENDED</pre>
*
* 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.
*/
public static final int DATASPACE_SCRGB = 411107328;
/**
* Display P3 encoding.
*
* <p>Composed of the following -</p>
* <pre>
* Primaries: STANDARD_DCI_P3
* Transfer: TRANSFER_SRGB
* Range: RANGE_FULL</pre>
*/
public static final int DATASPACE_DISPLAY_P3 = 143261696;
/**
* Hybrid Log Gamma encoding.
*
* <p>Composed of the following -</p>
* <pre>
* Primaries: STANDARD_BT2020
* Transfer: TRANSFER_HLG
* Range: RANGE_FULL</pre>
*/
public static final int DATASPACE_BT2020_HLG = 168165376;
/**
* Perceptual Quantizer encoding.
*
* <p>Composed of the following -</p>
* <pre>
* Primaries: STANDARD_BT2020
* Transfer: TRANSFER_ST2084
* Range: RANGE_FULL</pre>
*/
public static final int DATASPACE_BT2020_PQ = 163971072;
/**
* Adobe RGB encoding.
*
* <p>Composed of the following -</p>
* <pre>
* Primaries: STANDARD_ADOBE_RGB
* Transfer: TRANSFER_GAMMA2_2
* Range: RANGE_FULL</pre>
*
* Note: Application is responsible for gamma encoding the data.
*/
public static final int DATASPACE_ADOBE_RGB = 151715840;
/**
* JPEG File Interchange Format (JFIF).
*
* <p>Composed of the following -</p>
* <pre>
* Primaries: STANDARD_BT601_625
* Transfer: TRANSFER_SMPTE_170M
* Range: RANGE_FULL</pre>
*
* Same model as BT.601-625, but all values (Y, Cb, Cr) range from {@code 0} to {@code 255}
*/
public static final int DATASPACE_JFIF = 146931712;
/**
* ITU-R Recommendation 601 (BT.601) - 525-line
*
* Standard-definition television, 525 Lines (NTSC).
*
* <p>Composed of the following -</p>
* <pre>
* Primaries: STANDARD_BT601_625
* Transfer: TRANSFER_SMPTE_170M
* Range: RANGE_LIMITED</pre>
*/
public static final int DATASPACE_BT601_625 = 281149440;
/**
* ITU-R Recommendation 709 (BT.709)
*
* High-definition television.
*
* <p>Composed of the following -</p>
* <pre>
* Primaries: STANDARD_BT601_525
* Transfer: TRANSFER_SMPTE_170M
* Range: RANGE_LIMITED</pre>
*/
public static final int DATASPACE_BT601_525 = 281280512;
/**
* ITU-R Recommendation 2020 (BT.2020)
*
* Ultra High-definition television.
*
* <p>Composed of the following -</p>
* <pre>
* Primaries: STANDARD_BT2020
* Transfer: TRANSFER_SMPTE_170M
* Range: RANGE_FULL</pre>
*/
public static final int DATASPACE_BT2020 = 147193856;
/**
* ITU-R Recommendation 709 (BT.709)
*
* High-definition television.
*
* <p>Composed of the following -</p>
* <pre>
* Primaries: STANDARD_BT709
* Transfer: TRANSFER_SMPTE_170M
* Range: RANGE_LIMITED</pre>
*/
public static final int DATASPACE_BT709 = 281083904;
/**
* SMPTE EG 432-1 and SMPTE RP 431-2
*
* Digital Cinema DCI-P3.
*
* <p>Composed of the following -</p>
* <pre>
* Primaries: STANDARD_DCI_P3
* Transfer: TRANSFER_GAMMA2_6
* Range: RANGE_FULL</pre>
*
* Note: Application is responsible for gamma encoding the data as
* a 2.6 gamma encoding is not supported in HW.
*/
public static final int DATASPACE_DCI_P3 = 155844608;
/**
* sRGB linear encoding.
*
* <p>Composed of the following -</p>
* <pre>
* Primaries: STANDARD_BT709
* Transfer: TRANSFER_LINEAR
* Range: RANGE_FULL</pre>
*
* The values are encoded using the full range ([0,255] for 8-bit) for all
* components.
*/
public static final int DATASPACE_SRGB_LINEAR = 138477568;
/** @hide */
@Retention(RetentionPolicy.SOURCE)
@IntDef(flag = true, value = {
DATASPACE_DEPTH,
DATASPACE_DYNAMIC_DEPTH,
DATASPACE_HEIF,
DATASPACE_JPEG_R,
DATASPACE_UNKNOWN,
DATASPACE_SCRGB_LINEAR,
DATASPACE_SRGB,
DATASPACE_SCRGB,
DATASPACE_DISPLAY_P3,
DATASPACE_BT2020_HLG,
DATASPACE_BT2020_PQ,
DATASPACE_ADOBE_RGB,
DATASPACE_JFIF,
DATASPACE_BT601_625,
DATASPACE_BT601_525,
DATASPACE_BT2020,
DATASPACE_BT709,
DATASPACE_DCI_P3,
DATASPACE_SRGB_LINEAR
})
public @interface NamedDataSpace {};
private DataSpace() {}
/**
* Pack the dataSpace value using standard, transfer and range field value.
* Field values should be in the correct bits place.
*
* @param standard Chromaticity coordinates of source primaries
* @param transfer Opto-electronic transfer characteristic at the source
* @param range The range of values
*
* @return The int dataspace packed by standard, transfer and range value
*/
public static @ColorDataSpace int pack(@DataSpaceStandard int standard,
@DataSpaceTransfer int transfer,
@DataSpaceRange int range) {
if ((standard & STANDARD_MASK) != standard) {
throw new IllegalArgumentException("Invalid standard " + standard);
}
if ((transfer & TRANSFER_MASK) != transfer) {
throw new IllegalArgumentException("Invalid transfer " + transfer);
}
if ((range & RANGE_MASK) != range) {
throw new IllegalArgumentException("Invalid range " + range);
}
return standard | transfer | range;
}
/**
* Unpack the standard field value from the packed dataSpace value.
*
* @param dataSpace The packed dataspace value
*
* @return The standard aspect
*/
public static @DataSpaceStandard int getStandard(@ColorDataSpace int dataSpace) {
@DataSpaceStandard int standard = dataSpace & STANDARD_MASK;
return standard;
}
/**
* Unpack the transfer field value from the packed dataSpace value
*
* @param dataSpace The packed dataspace value
*
* @return The transfer aspect
*/
public static @DataSpaceTransfer int getTransfer(@ColorDataSpace int dataSpace) {
@DataSpaceTransfer int transfer = dataSpace & TRANSFER_MASK;
return transfer;
}
/**
* Unpack the range field value from the packed dataSpace value
*
* @param dataSpace The packed dataspace value
*
* @return The range aspect
*/
public static @DataSpaceRange int getRange(@ColorDataSpace int dataSpace) {
@DataSpaceRange int range = dataSpace & RANGE_MASK;
return range;
}
}
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