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Expand HAL_DATASPACE to include range, standard and transfer bitfields 

Bug: 25975353
Change-Id: Id2668508b523130e5fa3496440d9423682b31632
This commit is contained in:
Lajos Molnar 2016-01-15 15:42:41 -08:00
parent c31f1f3f6e
commit 9136922045
1 changed files with 369 additions and 88 deletions
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457
include/system/graphics.h
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@ -553,6 +553,37 @@ typedef enum android_transform {
* which describes both gamma curve and numeric range (within the bit depth).
*
* Other dataspaces include depth measurement data from a depth camera.
*
* A dataspace is comprised of a number of fields.
*
* Version
* --------
* The top 2 bits represent the revision of the field specification. This is
* currently always 0.
*
*
* bits 31-30 29 - 0
* +-----+----------------------------------------------------+
* fields | Rev | Revision specific fields |
* +-----+----------------------------------------------------+
*
* Field layout for version = 0:
* ----------------------------
*
* A dataspace is comprised of the following fields:
* Standard
* Transfer function
* Range
*
* bits 31-30 29-27 26 - 22 21 - 16 15 - 0
* +-----+-----+--------+--------+----------------------------+
* fields | 0 |Range|Transfer|Standard| Legacy and custom |
* +-----+-----+--------+--------+----------------------------+
* VV RRR TTTTT SSSSSS LLLLLLLL LLLLLLLL
*
* If range, transfer and standard fields are all 0 (e.g. top 16 bits are
* all zeroes), the bottom 16 bits contain either a legacy dataspace value,
* or a custom value.
*/
typedef enum android_dataspace {
@ -581,14 +612,309 @@ typedef enum android_dataspace {
HAL_DATASPACE_ARBITRARY = 0x1,
/*
* RGB Colorspaces
* -----------------
* Color-description aspects
*
* Primaries are given using (x,y) coordinates in the CIE 1931 definition
* of x and y specified by ISO 11664-1.
* 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.
*/
HAL_DATASPACE_STANDARD_SHIFT = 16,
/*
* 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.
*/
HAL_DATASPACE_STANDARD_MASK = 63 << HAL_DATASPACE_STANDARD_SHIFT, // 0x3F
/*
* 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.
*/
HAL_DATASPACE_STANDARD_UNSPECIFIED = 0 << HAL_DATASPACE_STANDARD_SHIFT,
/*
* Primaries: x y
* green 0.300 0.600
* blue 0.150 0.060
* red 0.640 0.330
* white (D65) 0.3127 0.3290
*
* Use the unadjusted KR = 0.2126, KB = 0.0722 luminance interpretation
* for RGB conversion.
*/
HAL_DATASPACE_STANDARD_BT709 = 1 << HAL_DATASPACE_STANDARD_SHIFT,
/*
* Primaries: x y
* green 0.290 0.600
* blue 0.150 0.060
* red 0.640 0.330
* white (D65) 0.3127 0.3290
*
* 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.
*/
HAL_DATASPACE_STANDARD_BT601_625 = 2 << HAL_DATASPACE_STANDARD_SHIFT,
/*
* Primaries: x y
* green 0.290 0.600
* blue 0.150 0.060
* red 0.640 0.330
* white (D65) 0.3127 0.3290
*
* Use the unadjusted KR = 0.222, KB = 0.071 luminance interpretation
* for RGB conversion.
*/
HAL_DATASPACE_STANDARD_BT601_625_UNADJUSTED = 3 << HAL_DATASPACE_STANDARD_SHIFT,
/*
* Primaries: x y
* green 0.310 0.595
* blue 0.155 0.070
* red 0.630 0.340
* white (D65) 0.3127 0.3290
*
* 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.
*/
HAL_DATASPACE_STANDARD_BT601_525 = 4 << HAL_DATASPACE_STANDARD_SHIFT,
/*
* Primaries: x y
* green 0.310 0.595
* blue 0.155 0.070
* red 0.630 0.340
* white (D65) 0.3127 0.3290
*
* Use the unadjusted KR = 0.212, KB = 0.087 luminance interpretation
* for RGB conversion (as in SMPTE 240M).
*/
HAL_DATASPACE_STANDARD_BT601_525_UNADJUSTED = 5 << HAL_DATASPACE_STANDARD_SHIFT,
/*
* Primaries: x y
* green 0.170 0.797
* blue 0.131 0.046
* red 0.708 0.292
* white (D65) 0.3127 0.3290
*
* Use the unadjusted KR = 0.2627, KB = 0.0593 luminance interpretation
* for RGB conversion.
*/
HAL_DATASPACE_STANDARD_BT2020 = 6 << HAL_DATASPACE_STANDARD_SHIFT,
/*
* Primaries: x y
* green 0.170 0.797
* blue 0.131 0.046
* red 0.708 0.292
* white (D65) 0.3127 0.3290
*
* Use the unadjusted KR = 0.2627, KB = 0.0593 luminance interpretation
* for RGB conversion using the linear domain.
*/
HAL_DATASPACE_STANDARD_BT2020_CONSTANT_LUMINANCE = 7 << HAL_DATASPACE_STANDARD_SHIFT,
/*
* Primaries: x y
* green 0.21 0.71
* blue 0.14 0.08
* red 0.67 0.33
* white (C) 0.310 0.316
*
* Use the unadjusted KR = 0.30, KB = 0.11 luminance interpretation
* for RGB conversion.
*/
HAL_DATASPACE_STANDARD_BT470M = 8 << HAL_DATASPACE_STANDARD_SHIFT,
/*
* Primaries: x y
* green 0.243 0.692
* blue 0.145 0.049
* red 0.681 0.319
* white (C) 0.310 0.316
*
* Use the unadjusted KR = 0.254, KB = 0.068 luminance interpretation
* for RGB conversion.
*/
HAL_DATASPACE_STANDARD_FILM = 9 << HAL_DATASPACE_STANDARD_SHIFT,
HAL_DATASPACE_TRANSFER_SHIFT = 22,
/*
* 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.
*/
HAL_DATASPACE_TRANSFER_MASK = 31 << HAL_DATASPACE_TRANSFER_SHIFT, // 0x1F
/*
* Transfer characteristics are unknown or are determined by the
* application.
*
* Implementations should use the following transfer functions:
*
* For YCbCr formats: use HAL_DATASPACE_TRANSFER_SMPTE_170M
* For RGB formats: use HAL_DATASPACE_TRANSFER_SRGB
*
* For all other formats transfer function is undefined, and implementations
* should use an appropriate standard for the data represented.
*/
HAL_DATASPACE_TRANSFER_UNSPECIFIED = 0 << HAL_DATASPACE_TRANSFER_SHIFT,
/*
* Transfer characteristic curve:
* E = L
* L - luminance of image 0 <= L <= 1 for conventional colorimetry
* E - corresponding electrical signal
*/
HAL_DATASPACE_TRANSFER_LINEAR = 1 << HAL_DATASPACE_TRANSFER_SHIFT,
/*
* 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
*/
HAL_DATASPACE_TRANSFER_SRGB = 2 << HAL_DATASPACE_TRANSFER_SHIFT,
/*
* BT.601 525, BT.601 625, BT.709, BT.2020
*
* 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
*/
HAL_DATASPACE_TRANSFER_SMPTE_170M = 3 << HAL_DATASPACE_TRANSFER_SHIFT,
/*
* Assumed display gamma 2.2.
*
* Transfer characteristic curve:
* E = L ^ (1/2.2)
* L - luminance of image 0 <= L <= 1 for conventional colorimetry
* E - corresponding electrical signal
*/
HAL_DATASPACE_TRANSFER_GAMMA2_2 = 4 << HAL_DATASPACE_TRANSFER_SHIFT,
/*
* display gamma 2.8.
*
* Transfer characteristic curve:
* E = L ^ (1/2.8)
* L - luminance of image 0 <= L <= 1 for conventional colorimetry
* E - corresponding electrical signal
*/
HAL_DATASPACE_TRANSFER_GAMMA2_8 = 5 << HAL_DATASPACE_TRANSFER_SHIFT,
/*
* SMPTE ST 2084
*
* 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
*/
HAL_DATASPACE_TRANSFER_ST2084 = 6 << HAL_DATASPACE_TRANSFER_SHIFT,
/*
* ARIB STD-B67 Hybrid Log Gamma
*
* 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
*/
HAL_DATASPACE_TRANSFER_HLG = 7 << HAL_DATASPACE_TRANSFER_SHIFT,
HAL_DATASPACE_RANGE_SHIFT = 27,
/*
* 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.
*/
HAL_DATASPACE_RANGE_MASK = 7 << HAL_DATASPACE_RANGE_SHIFT, // 0x7
/*
* 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.
*/
HAL_DATASPACE_RANGE_UNSPECIFIED = 0 << HAL_DATASPACE_RANGE_SHIFT,
/*
* 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.
*/
HAL_DATASPACE_RANGE_FULL = 1 << HAL_DATASPACE_RANGE_SHIFT,
/*
* 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
*/
HAL_DATASPACE_RANGE_LIMITED = 2 << HAL_DATASPACE_RANGE_SHIFT,
/*
* Legacy dataspaces
*/
/*
@ -601,34 +927,30 @@ typedef enum android_dataspace {
* The values are encoded using the full range ([0,255] for 8-bit) for all
* components.
*/
HAL_DATASPACE_SRGB_LINEAR = 0x200,
HAL_DATASPACE_SRGB_LINEAR_LEGACY = 0x200,
HAL_DATASPACE_SRGB_LINEAR = HAL_DATASPACE_STANDARD_BT709 |
HAL_DATASPACE_TRANSFER_LINEAR | HAL_DATASPACE_RANGE_FULL,
/*
* sRGB gamma encoding:
*
* The red, green and blue components are stored in sRGB space, and
* converted to linear space when read, using the standard sRGB to linear
* equation:
*
* Clinear = Csrgb / 12.92 for Csrgb <= 0.04045
* = (Csrgb + 0.055 / 1.055)^2.4 for Csrgb > 0.04045
*
* When written the inverse transformation is performed:
*
* Csrgb = 12.92 * Clinear for Clinear <= 0.0031308
* = 1.055 * Clinear^(1/2.4) - 0.055 for Clinear > 0.0031308
*
* 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.
*
* 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.
*
* Use full range and BT.709 standard.
*/
HAL_DATASPACE_SRGB = 0x201,
HAL_DATASPACE_SRGB_LEGACY = 0x201,
HAL_DATASPACE_SRGB = HAL_DATASPACE_STANDARD_BT709 |
HAL_DATASPACE_TRANSFER_SRGB | HAL_DATASPACE_RANGE_FULL,
/*
* YCbCr Colorspaces
@ -646,94 +968,53 @@ typedef enum android_dataspace {
*
* Same model as BT.601-625, but all values (Y, Cb, Cr) range from 0 to 255
*
* Transfer characteristic curve:
* E = 1.099 * L ^ 0.45 - 0.099, 1.00 >= L >= 0.018
* E = 4.500 L, 0.018 > L >= 0
* L - luminance of image 0 <= L <= 1 for conventional colorimetry
* E - corresponding electrical signal
*
* Primaries: x y
* green 0.290 0.600
* blue 0.150 0.060
* red 0.640 0.330
* white (D65) 0.3127 0.3290
* Use full range, BT.601 transfer and BT.601_625 standard.
*/
HAL_DATASPACE_JFIF = 0x101,
HAL_DATASPACE_JFIF_LEGACY = 0x101,
HAL_DATASPACE_JFIF = HAL_DATASPACE_STANDARD_BT601_625 |
HAL_DATASPACE_TRANSFER_SMPTE_170M | HAL_DATASPACE_RANGE_FULL,
/*
* ITU-R Recommendation 601 (BT.601) - 625-line
*
* Standard-definition television, 625 Lines (PAL)
*
* 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
*
* Transfer characteristic curve:
* E = 1.099 * L ^ 0.45 - 0.099, 1.00 >= L >= 0.018
* E = 4.500 L, 0.018 > L >= 0
* L - luminance of image 0 <= L <= 1 for conventional colorimetry
* E - corresponding electrical signal
*
* Primaries: x y
* green 0.290 0.600
* blue 0.150 0.060
* red 0.640 0.330
* white (D65) 0.3127 0.3290
* Use limited range, BT.601 transfer and BT.601_625 standard.
*/
HAL_DATASPACE_BT601_625 = 0x102,
HAL_DATASPACE_BT601_625_LEGACY = 0x102,
HAL_DATASPACE_BT601_625 = HAL_DATASPACE_STANDARD_BT601_625 |
HAL_DATASPACE_TRANSFER_SMPTE_170M | HAL_DATASPACE_RANGE_LIMITED,
/*
* ITU-R Recommendation 601 (BT.601) - 525-line
*
* Standard-definition television, 525 Lines (NTSC)
*
* 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
*
* Transfer characteristic curve:
* E = 1.099 * L ^ 0.45 - 0.099, 1.00 >= L >= 0.018
* E = 4.500 L, 0.018 > L >= 0
* L - luminance of image 0 <= L <= 1 for conventional colorimetry
* E - corresponding electrical signal
*
* Primaries: x y
* green 0.310 0.595
* blue 0.155 0.070
* red 0.630 0.340
* white (D65) 0.3127 0.3290
* Use limited range, BT.601 transfer and BT.601_525 standard.
*/
HAL_DATASPACE_BT601_525 = 0x103,
HAL_DATASPACE_BT601_525_LEGACY = 0x103,
HAL_DATASPACE_BT601_525 = HAL_DATASPACE_STANDARD_BT601_525 |
HAL_DATASPACE_TRANSFER_SMPTE_170M | HAL_DATASPACE_RANGE_LIMITED,
/*
* ITU-R Recommendation 709 (BT.709)
*
* High-definition television
*
* 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
*
* Primaries: x y
* green 0.300 0.600
* blue 0.150 0.060
* red 0.640 0.330
* white (D65) 0.3127 0.3290
* Use limited range, BT.709 transfer and BT.709 standard.
*/
HAL_DATASPACE_BT709_LEGACY = 0x104,
HAL_DATASPACE_BT709 = HAL_DATASPACE_STANDARD_BT709 |
HAL_DATASPACE_TRANSFER_SMPTE_170M | HAL_DATASPACE_RANGE_LIMITED,
/*
* Data spaces for non-color formats
*/
HAL_DATASPACE_BT709 = 0x104,
/*
* The buffer contains depth ranging measurements from a depth camera.