Enum wayland_client::protocol::wl_shm::Format

source ·

#[non_exhaustive]
#[repr(u32)]pub enum Format {
Show 123 variants    Argb8888 = 0,
    Xrgb8888 = 1,
    C8 = 538_982_467,
    Rgb332 = 943_867_730,
    Bgr233 = 944_916_290,
    Xrgb4444 = 842_093_144,
    Xbgr4444 = 842_089_048,
    Rgbx4444 = 842_094_674,
    Bgrx4444 = 842_094_658,
    Argb4444 = 842_093_121,
    Abgr4444 = 842_089_025,
    Rgba4444 = 842_088_786,
    Bgra4444 = 842_088_770,
    Xrgb1555 = 892_424_792,
    Xbgr1555 = 892_420_696,
    Rgbx5551 = 892_426_322,
    Bgrx5551 = 892_426_306,
    Argb1555 = 892_424_769,
    Abgr1555 = 892_420_673,
    Rgba5551 = 892_420_434,
    Bgra5551 = 892_420_418,
    Rgb565 = 909_199_186,
    Bgr565 = 909_199_170,
    Rgb888 = 875_710_290,
    Bgr888 = 875_710_274,
    Xbgr8888 = 875_709_016,
    Rgbx8888 = 875_714_642,
    Bgrx8888 = 875_714_626,
    Abgr8888 = 875_708_993,
    Rgba8888 = 875_708_754,
    Bgra8888 = 875_708_738,
    Xrgb2101010 = 808_669_784,
    Xbgr2101010 = 808_665_688,
    Rgbx1010102 = 808_671_314,
    Bgrx1010102 = 808_671_298,
    Argb2101010 = 808_669_761,
    Abgr2101010 = 808_665_665,
    Rgba1010102 = 808_665_426,
    Bgra1010102 = 808_665_410,
    Yuyv = 1_448_695_129,
    Yvyu = 1_431_918_169,
    Uyvy = 1_498_831_189,
    Vyuy = 1_498_765_654,
    Ayuv = 1_448_433_985,
    Nv12 = 842_094_158,
    Nv21 = 825_382_478,
    Nv16 = 909_203_022,
    Nv61 = 825_644_622,
    Yuv410 = 961_959_257,
    Yvu410 = 961_893_977,
    Yuv411 = 825_316_697,
    Yvu411 = 825_316_953,
    Yuv420 = 842_093_913,
    Yvu420 = 842_094_169,
    Yuv422 = 909_202_777,
    Yvu422 = 909_203_033,
    Yuv444 = 875_713_881,
    Yvu444 = 875_714_137,
    R8 = 538_982_482,
    R16 = 540_422_482,
    Rg88 = 943_212_370,
    Gr88 = 943_215_175,
    Rg1616 = 842_221_394,
    Gr1616 = 842_224_199,
    Xrgb16161616f = 1_211_388_504,
    Xbgr16161616f = 1_211_384_408,
    Argb16161616f = 1_211_388_481,
    Abgr16161616f = 1_211_384_385,
    Xyuv8888 = 1_448_434_008,
    Vuy888 = 875_713_878,
    Vuy101010 = 808_670_550,
    Y210 = 808_530_521,
    Y212 = 842_084_953,
    Y216 = 909_193_817,
    Y410 = 808_531_033,
    Y412 = 842_085_465,
    Y416 = 909_194_329,
    Xvyu2101010 = 808_670_808,
    Xvyu1216161616 = 909_334_104,
    Xvyu16161616 = 942_954_072,
    Y0l0 = 810_299_481,
    X0l0 = 810_299_480,
    Y0l2 = 843_853_913,
    X0l2 = 843_853_912,
    Yuv4208bit = 942_691_673,
    Yuv42010bit = 808_539_481,
    Xrgb8888A8 = 943_805_016,
    Xbgr8888A8 = 943_800_920,
    Rgbx8888A8 = 943_806_546,
    Bgrx8888A8 = 943_806_530,
    Rgb888A8 = 943_798_354,
    Bgr888A8 = 943_798_338,
    Rgb565A8 = 943_797_586,
    Bgr565A8 = 943_797_570,
    Nv24 = 875_714_126,
    Nv42 = 842_290_766,
    P210 = 808_530_512,
    P010 = 808_530_000,
    P012 = 842_084_432,
    P016 = 909_193_296,
    Axbxgxrx106106106106 = 808_534_593,
    Nv15 = 892_425_806,
    Q410 = 808_531_025,
    Q401 = 825_242_705,
    Xrgb16161616 = 942_953_048,
    Xbgr16161616 = 942_948_952,
    Argb16161616 = 942_953_025,
    Abgr16161616 = 942_948_929,
    C1 = 538_980_675,
    C2 = 538_980_931,
    C4 = 538_981_443,
    D1 = 538_980_676,
    D2 = 538_980_932,
    D4 = 538_981_444,
    D8 = 538_982_468,
    R1 = 538_980_690,
    R2 = 538_980_946,
    R4 = 538_981_458,
    R10 = 540_029_266,
    R12 = 540_160_338,
    Avuy8888 = 1_498_764_865,
    Xvuy8888 = 1_498_764_888,
    P030 = 808_661_072,
}

Expand description

pixel formats

This describes the memory layout of an individual pixel.

All renderers should support argb8888 and xrgb8888 but any other formats are optional and may not be supported by the particular renderer in use.

The drm format codes match the macros defined in drm_fourcc.h, except argb8888 and xrgb8888. The formats actually supported by the compositor will be reported by the format event.

For all wl_shm formats and unless specified in another protocol extension, pre-multiplied alpha is used for pixel values.

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

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Argb8888 = 0

32-bit ARGB format, [31:0] A:R:G:B 8:8:8:8 little endian

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Xrgb8888 = 1

32-bit RGB format, [31:0] x:R:G:B 8:8:8:8 little endian

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C8 = 538_982_467

8-bit color index format, [7:0] C

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Rgb332 = 943_867_730

8-bit RGB format, [7:0] R:G:B 3:3:2

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Bgr233 = 944_916_290

8-bit BGR format, [7:0] B:G:R 2:3:3

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Xrgb4444 = 842_093_144

16-bit xRGB format, [15:0] x:R:G:B 4:4:4:4 little endian

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Xbgr4444 = 842_089_048

16-bit xBGR format, [15:0] x:B:G:R 4:4:4:4 little endian

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Rgbx4444 = 842_094_674

16-bit RGBx format, [15:0] R:G:B:x 4:4:4:4 little endian

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Bgrx4444 = 842_094_658

16-bit BGRx format, [15:0] B:G:R:x 4:4:4:4 little endian

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Argb4444 = 842_093_121

16-bit ARGB format, [15:0] A:R:G:B 4:4:4:4 little endian

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Abgr4444 = 842_089_025

16-bit ABGR format, [15:0] A:B:G:R 4:4:4:4 little endian

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Rgba4444 = 842_088_786

16-bit RBGA format, [15:0] R:G:B:A 4:4:4:4 little endian

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Bgra4444 = 842_088_770

16-bit BGRA format, [15:0] B:G:R:A 4:4:4:4 little endian

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Xrgb1555 = 892_424_792

16-bit xRGB format, [15:0] x:R:G:B 1:5:5:5 little endian

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Xbgr1555 = 892_420_696

16-bit xBGR 1555 format, [15:0] x:B:G:R 1:5:5:5 little endian

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Rgbx5551 = 892_426_322

16-bit RGBx 5551 format, [15:0] R:G:B:x 5:5:5:1 little endian

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Bgrx5551 = 892_426_306

16-bit BGRx 5551 format, [15:0] B:G:R:x 5:5:5:1 little endian

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Argb1555 = 892_424_769

16-bit ARGB 1555 format, [15:0] A:R:G:B 1:5:5:5 little endian

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Abgr1555 = 892_420_673

16-bit ABGR 1555 format, [15:0] A:B:G:R 1:5:5:5 little endian

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Rgba5551 = 892_420_434

16-bit RGBA 5551 format, [15:0] R:G:B:A 5:5:5:1 little endian

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Bgra5551 = 892_420_418

16-bit BGRA 5551 format, [15:0] B:G:R:A 5:5:5:1 little endian

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Rgb565 = 909_199_186

16-bit RGB 565 format, [15:0] R:G:B 5:6:5 little endian

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Bgr565 = 909_199_170

16-bit BGR 565 format, [15:0] B:G:R 5:6:5 little endian

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Rgb888 = 875_710_290

24-bit RGB format, [23:0] R:G:B little endian

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Bgr888 = 875_710_274

24-bit BGR format, [23:0] B:G:R little endian

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Xbgr8888 = 875_709_016

32-bit xBGR format, [31:0] x:B:G:R 8:8:8:8 little endian

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Rgbx8888 = 875_714_642

32-bit RGBx format, [31:0] R:G:B:x 8:8:8:8 little endian

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Bgrx8888 = 875_714_626

32-bit BGRx format, [31:0] B:G:R:x 8:8:8:8 little endian

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Abgr8888 = 875_708_993

32-bit ABGR format, [31:0] A:B:G:R 8:8:8:8 little endian

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Rgba8888 = 875_708_754

32-bit RGBA format, [31:0] R:G:B:A 8:8:8:8 little endian

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Bgra8888 = 875_708_738

32-bit BGRA format, [31:0] B:G:R:A 8:8:8:8 little endian

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Xrgb2101010 = 808_669_784

32-bit xRGB format, [31:0] x:R:G:B 2:10:10:10 little endian

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Xbgr2101010 = 808_665_688

32-bit xBGR format, [31:0] x:B:G:R 2:10:10:10 little endian

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Rgbx1010102 = 808_671_314

32-bit RGBx format, [31:0] R:G:B:x 10:10:10:2 little endian

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Bgrx1010102 = 808_671_298

32-bit BGRx format, [31:0] B:G:R:x 10:10:10:2 little endian

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Argb2101010 = 808_669_761

32-bit ARGB format, [31:0] A:R:G:B 2:10:10:10 little endian

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Abgr2101010 = 808_665_665

32-bit ABGR format, [31:0] A:B:G:R 2:10:10:10 little endian

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Rgba1010102 = 808_665_426

32-bit RGBA format, [31:0] R:G:B:A 10:10:10:2 little endian

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Bgra1010102 = 808_665_410

32-bit BGRA format, [31:0] B:G:R:A 10:10:10:2 little endian

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Yuyv = 1_448_695_129

packed YCbCr format, [31:0] Cr0:Y1:Cb0:Y0 8:8:8:8 little endian

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Yvyu = 1_431_918_169

packed YCbCr format, [31:0] Cb0:Y1:Cr0:Y0 8:8:8:8 little endian

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Uyvy = 1_498_831_189

packed YCbCr format, [31:0] Y1:Cr0:Y0:Cb0 8:8:8:8 little endian

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Vyuy = 1_498_765_654

packed YCbCr format, [31:0] Y1:Cb0:Y0:Cr0 8:8:8:8 little endian

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Ayuv = 1_448_433_985

packed AYCbCr format, [31:0] A:Y:Cb:Cr 8:8:8:8 little endian

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Nv12 = 842_094_158

2 plane YCbCr Cr:Cb format, 2x2 subsampled Cr:Cb plane

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Nv21 = 825_382_478

2 plane YCbCr Cb:Cr format, 2x2 subsampled Cb:Cr plane

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Nv16 = 909_203_022

2 plane YCbCr Cr:Cb format, 2x1 subsampled Cr:Cb plane

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Nv61 = 825_644_622

2 plane YCbCr Cb:Cr format, 2x1 subsampled Cb:Cr plane

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Yuv410 = 961_959_257

3 plane YCbCr format, 4x4 subsampled Cb (1) and Cr (2) planes

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Yvu410 = 961_893_977

3 plane YCbCr format, 4x4 subsampled Cr (1) and Cb (2) planes

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Yuv411 = 825_316_697

3 plane YCbCr format, 4x1 subsampled Cb (1) and Cr (2) planes

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Yvu411 = 825_316_953

3 plane YCbCr format, 4x1 subsampled Cr (1) and Cb (2) planes

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Yuv420 = 842_093_913

3 plane YCbCr format, 2x2 subsampled Cb (1) and Cr (2) planes

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Yvu420 = 842_094_169

3 plane YCbCr format, 2x2 subsampled Cr (1) and Cb (2) planes

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Yuv422 = 909_202_777

3 plane YCbCr format, 2x1 subsampled Cb (1) and Cr (2) planes

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Yvu422 = 909_203_033

3 plane YCbCr format, 2x1 subsampled Cr (1) and Cb (2) planes

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Yuv444 = 875_713_881

3 plane YCbCr format, non-subsampled Cb (1) and Cr (2) planes

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Yvu444 = 875_714_137

3 plane YCbCr format, non-subsampled Cr (1) and Cb (2) planes

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R8 = 538_982_482

[7:0] R

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R16 = 540_422_482

[15:0] R little endian

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Rg88 = 943_212_370

[15:0] R:G 8:8 little endian

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Gr88 = 943_215_175

[15:0] G:R 8:8 little endian

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Rg1616 = 842_221_394

[31:0] R:G 16:16 little endian

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Gr1616 = 842_224_199

[31:0] G:R 16:16 little endian

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Xrgb16161616f = 1_211_388_504

[63:0] x:R:G:B 16:16:16:16 little endian

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Xbgr16161616f = 1_211_384_408

[63:0] x:B:G:R 16:16:16:16 little endian

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Argb16161616f = 1_211_388_481

[63:0] A:R:G:B 16:16:16:16 little endian

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Abgr16161616f = 1_211_384_385

[63:0] A:B:G:R 16:16:16:16 little endian

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Xyuv8888 = 1_448_434_008

[31:0] X:Y:Cb:Cr 8:8:8:8 little endian

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Vuy888 = 875_713_878

[23:0] Cr:Cb:Y 8:8:8 little endian

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Vuy101010 = 808_670_550

Y followed by U then V, 10:10:10. Non-linear modifier only

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Y210 = 808_530_521

[63:0] Cr0:0:Y1:0:Cb0:0:Y0:0 10:6:10:6:10:6:10:6 little endian per 2 Y pixels

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Y212 = 842_084_953

[63:0] Cr0:0:Y1:0:Cb0:0:Y0:0 12:4:12:4:12:4:12:4 little endian per 2 Y pixels

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Y216 = 909_193_817

[63:0] Cr0:Y1:Cb0:Y0 16:16:16:16 little endian per 2 Y pixels

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Y410 = 808_531_033

[31:0] A:Cr:Y:Cb 2:10:10:10 little endian

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Y412 = 842_085_465

[63:0] A:0:Cr:0:Y:0:Cb:0 12:4:12:4:12:4:12:4 little endian

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Y416 = 909_194_329

[63:0] A:Cr:Y:Cb 16:16:16:16 little endian

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Xvyu2101010 = 808_670_808

[31:0] X:Cr:Y:Cb 2:10:10:10 little endian

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Xvyu1216161616 = 909_334_104

[63:0] X:0:Cr:0:Y:0:Cb:0 12:4:12:4:12:4:12:4 little endian

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Xvyu16161616 = 942_954_072

[63:0] X:Cr:Y:Cb 16:16:16:16 little endian

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Y0l0 = 810_299_481

[63:0] A3:A2:Y3:0:Cr0:0:Y2:0:A1:A0:Y1:0:Cb0:0:Y0:0 1:1:8:2:8:2:8:2:1:1:8:2:8:2:8:2 little endian

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X0l0 = 810_299_480

[63:0] X3:X2:Y3:0:Cr0:0:Y2:0:X1:X0:Y1:0:Cb0:0:Y0:0 1:1:8:2:8:2:8:2:1:1:8:2:8:2:8:2 little endian

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Y0l2 = 843_853_913

[63:0] A3:A2:Y3:Cr0:Y2:A1:A0:Y1:Cb0:Y0 1:1:10:10:10:1:1:10:10:10 little endian

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X0l2 = 843_853_912

[63:0] X3:X2:Y3:Cr0:Y2:X1:X0:Y1:Cb0:Y0 1:1:10:10:10:1:1:10:10:10 little endian

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Nv24 = 875_714_126

non-subsampled Cr:Cb plane

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Nv42 = 842_290_766

non-subsampled Cb:Cr plane

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P210 = 808_530_512

2x1 subsampled Cr:Cb plane, 10 bit per channel

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P010 = 808_530_000

2x2 subsampled Cr:Cb plane 10 bits per channel

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P012 = 842_084_432

2x2 subsampled Cr:Cb plane 12 bits per channel

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P016 = 909_193_296

2x2 subsampled Cr:Cb plane 16 bits per channel

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Axbxgxrx106106106106 = 808_534_593

[63:0] A:x:B:x:G:x:R:x 10:6:10:6:10:6:10:6 little endian

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Nv15 = 892_425_806

2x2 subsampled Cr:Cb plane

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Q410 = 808_531_025

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Q401 = 825_242_705

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Xrgb16161616 = 942_953_048

[63:0] x:R:G:B 16:16:16:16 little endian

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Xbgr16161616 = 942_948_952

[63:0] x:B:G:R 16:16:16:16 little endian

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Argb16161616 = 942_953_025

[63:0] A:R:G:B 16:16:16:16 little endian

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Abgr16161616 = 942_948_929

[63:0] A:B:G:R 16:16:16:16 little endian

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C1 = 538_980_675

[7:0] C0:C1:C2:C3:C4:C5:C6:C7 1:1:1:1:1:1:1:1 eight pixels/byte

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C2 = 538_980_931

[7:0] C0:C1:C2:C3 2:2:2:2 four pixels/byte

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C4 = 538_981_443

[7:0] C0:C1 4:4 two pixels/byte

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D1 = 538_980_676

[7:0] D0:D1:D2:D3:D4:D5:D6:D7 1:1:1:1:1:1:1:1 eight pixels/byte

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D2 = 538_980_932

[7:0] D0:D1:D2:D3 2:2:2:2 four pixels/byte

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D4 = 538_981_444

[7:0] D0:D1 4:4 two pixels/byte

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D8 = 538_982_468

[7:0] D

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R1 = 538_980_690

[7:0] R0:R1:R2:R3:R4:R5:R6:R7 1:1:1:1:1:1:1:1 eight pixels/byte

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R2 = 538_980_946

[7:0] R0:R1:R2:R3 2:2:2:2 four pixels/byte

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R4 = 538_981_458

[7:0] R0:R1 4:4 two pixels/byte

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R10 = 540_029_266

[15:0] x:R 6:10 little endian

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R12 = 540_160_338

[15:0] x:R 4:12 little endian

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Avuy8888 = 1_498_764_865

[31:0] A:Cr:Cb:Y 8:8:8:8 little endian

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Xvuy8888 = 1_498_764_888

[31:0] X:Cr:Cb:Y 8:8:8:8 little endian

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P030 = 808_661_072

2x2 subsampled Cr:Cb plane 10 bits per channel packed

Trait Implementations§

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impl Clone for Format

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fn clone(&self) -> Format

Returns a copy of the value. Read more

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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl Debug for Format

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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impl From<Format> for u32

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fn from(val: Format) -> u32

Converts to this type from the input type.

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impl Hash for Format

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fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher. Read more

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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more

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impl Ord for Format

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fn cmp(&self, other: &Format) -> Ordering

This method returns an Ordering between self and other. Read more

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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more

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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more

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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more

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impl PartialEq for Format

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fn eq(&self, other: &Format) -> bool

This method tests for self and other values to be equal, and is used by ==.

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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

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impl PartialOrd for Format

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fn partial_cmp(&self, other: &Format) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more

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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more

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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more

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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

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impl TryFrom<u32> for Format

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type Error = ()

The type returned in the event of a conversion error.

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fn try_from(val: u32) -> Result<Format, ()>

Performs the conversion.

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impl Copy for Format

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impl Eq for Format

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impl StructuralPartialEq for Format

Auto Trait Implementations§

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impl Freeze for Format

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impl RefUnwindSafe for Format

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impl Send for Format

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impl Sync for Format

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impl Unpin for Format

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impl UnwindSafe for Format

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

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impl<T> BorrowMut<T> for T
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fn borrow_mut(&mut self) -> &mut T

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fn into_any(self: Box<T>) -> Box<dyn Any>

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where T: Clone,

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type Owned = T

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Enum wayland_client::protocol::wl_shm::FormatCopy item path

Variants (Non-exhaustive)§

Argb8888 = 0

Xrgb8888 = 1

C8 = 538_982_467

Rgb332 = 943_867_730

Bgr233 = 944_916_290

Xrgb4444 = 842_093_144

Xbgr4444 = 842_089_048

Rgbx4444 = 842_094_674

Bgrx4444 = 842_094_658

Argb4444 = 842_093_121

Abgr4444 = 842_089_025

Rgba4444 = 842_088_786

Bgra4444 = 842_088_770

Xrgb1555 = 892_424_792

Xbgr1555 = 892_420_696

Rgbx5551 = 892_426_322

Bgrx5551 = 892_426_306

Argb1555 = 892_424_769

Abgr1555 = 892_420_673

Rgba5551 = 892_420_434

Bgra5551 = 892_420_418

Rgb565 = 909_199_186

Bgr565 = 909_199_170

Rgb888 = 875_710_290

Bgr888 = 875_710_274

Xbgr8888 = 875_709_016

Rgbx8888 = 875_714_642

Bgrx8888 = 875_714_626

Abgr8888 = 875_708_993

Rgba8888 = 875_708_754

Bgra8888 = 875_708_738

Xrgb2101010 = 808_669_784

Xbgr2101010 = 808_665_688

Rgbx1010102 = 808_671_314

Bgrx1010102 = 808_671_298

Argb2101010 = 808_669_761

Abgr2101010 = 808_665_665

Rgba1010102 = 808_665_426

Bgra1010102 = 808_665_410

Yuyv = 1_448_695_129

Yvyu = 1_431_918_169

Uyvy = 1_498_831_189

Vyuy = 1_498_765_654

Ayuv = 1_448_433_985

Nv12 = 842_094_158

Nv21 = 825_382_478

Nv16 = 909_203_022

Nv61 = 825_644_622

Yuv410 = 961_959_257

Yvu410 = 961_893_977

Yuv411 = 825_316_697

Yvu411 = 825_316_953

Yuv420 = 842_093_913

Yvu420 = 842_094_169

Yuv422 = 909_202_777

Yvu422 = 909_203_033

Yuv444 = 875_713_881

Yvu444 = 875_714_137

R8 = 538_982_482

R16 = 540_422_482

Rg88 = 943_212_370

Gr88 = 943_215_175

Rg1616 = 842_221_394

Gr1616 = 842_224_199

Xrgb16161616f = 1_211_388_504

Xbgr16161616f = 1_211_384_408

Argb16161616f = 1_211_388_481

Abgr16161616f = 1_211_384_385

Xyuv8888 = 1_448_434_008

Vuy888 = 875_713_878

Vuy101010 = 808_670_550

Y210 = 808_530_521

Y212 = 842_084_953

Y216 = 909_193_817

Y410 = 808_531_033

Y412 = 842_085_465

Y416 = 909_194_329

Xvyu2101010 = 808_670_808

Enum wayland_client::protocol::wl_shm::Format

fn hash<H: Hasher>(&self, state: &mut H)

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

fn max(self, other: Self) -> Self
where Self: Sized,

fn min(self, other: Self) -> Self
where Self: Sized,

fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,