drm_fourcc.h

/*
 * Copyright 2011 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef DRM_FOURCC_H
#define DRM_FOURCC_H

#include "drm.h"

#if defined(__cplusplus)
extern "C" {
#endif

#define fourcc_code(a, b, c, d) ((__u32)(a) | ((__u32)(b) << 8) | \
				 ((__u32)(c) << 16) | ((__u32)(d) << 24))

#define DRM_FORMAT_BIG_ENDIAN (1<<31) /* format is big endian instead of little endian */

/* color index */
#define DRM_FORMAT_C8		fourcc_code('C', '8', ' ', ' ') /* [7:0] C */

/* 8 bpp Red */
#define DRM_FORMAT_R8		fourcc_code('R', '8', ' ', ' ') /* [7:0] R */

/* 16 bpp Red */
#define DRM_FORMAT_R16          fourcc_code('R', '1', '6', ' ') /* [15:0] R little endian */

/* 16 bpp RG */
#define DRM_FORMAT_RG88		fourcc_code('R', 'G', '8', '8') /* [15:0] R:G 8:8 little endian */
#define DRM_FORMAT_GR88		fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */

/* 8 bpp RGB */
#define DRM_FORMAT_RGB332	fourcc_code('R', 'G', 'B', '8') /* [7:0] R:G:B 3:3:2 */
#define DRM_FORMAT_BGR233	fourcc_code('B', 'G', 'R', '8') /* [7:0] B:G:R 2:3:3 */

/* 16 bpp RGB */
#define DRM_FORMAT_XRGB4444	fourcc_code('X', 'R', '1', '2') /* [15:0] x:R:G:B 4:4:4:4 little endian */
#define DRM_FORMAT_XBGR4444	fourcc_code('X', 'B', '1', '2') /* [15:0] x:B:G:R 4:4:4:4 little endian */
#define DRM_FORMAT_RGBX4444	fourcc_code('R', 'X', '1', '2') /* [15:0] R:G:B:x 4:4:4:4 little endian */
#define DRM_FORMAT_BGRX4444	fourcc_code('B', 'X', '1', '2') /* [15:0] B:G:R:x 4:4:4:4 little endian */

#define DRM_FORMAT_ARGB4444	fourcc_code('A', 'R', '1', '2') /* [15:0] A:R:G:B 4:4:4:4 little endian */
#define DRM_FORMAT_ABGR4444	fourcc_code('A', 'B', '1', '2') /* [15:0] A:B:G:R 4:4:4:4 little endian */
#define DRM_FORMAT_RGBA4444	fourcc_code('R', 'A', '1', '2') /* [15:0] R:G:B:A 4:4:4:4 little endian */
#define DRM_FORMAT_BGRA4444	fourcc_code('B', 'A', '1', '2') /* [15:0] B:G:R:A 4:4:4:4 little endian */

#define DRM_FORMAT_XRGB1555	fourcc_code('X', 'R', '1', '5') /* [15:0] x:R:G:B 1:5:5:5 little endian */
#define DRM_FORMAT_XBGR1555	fourcc_code('X', 'B', '1', '5') /* [15:0] x:B:G:R 1:5:5:5 little endian */
#define DRM_FORMAT_RGBX5551	fourcc_code('R', 'X', '1', '5') /* [15:0] R:G:B:x 5:5:5:1 little endian */
#define DRM_FORMAT_BGRX5551	fourcc_code('B', 'X', '1', '5') /* [15:0] B:G:R:x 5:5:5:1 little endian */

#define DRM_FORMAT_ARGB1555	fourcc_code('A', 'R', '1', '5') /* [15:0] A:R:G:B 1:5:5:5 little endian */
#define DRM_FORMAT_ABGR1555	fourcc_code('A', 'B', '1', '5') /* [15:0] A:B:G:R 1:5:5:5 little endian */
#define DRM_FORMAT_RGBA5551	fourcc_code('R', 'A', '1', '5') /* [15:0] R:G:B:A 5:5:5:1 little endian */
#define DRM_FORMAT_BGRA5551	fourcc_code('B', 'A', '1', '5') /* [15:0] B:G:R:A 5:5:5:1 little endian */

#define DRM_FORMAT_RGB565	fourcc_code('R', 'G', '1', '6') /* [15:0] R:G:B 5:6:5 little endian */
#define DRM_FORMAT_BGR565	fourcc_code('B', 'G', '1', '6') /* [15:0] B:G:R 5:6:5 little endian */

/* 24 bpp RGB */
#define DRM_FORMAT_RGB888	fourcc_code('R', 'G', '2', '4') /* [23:0] R:G:B little endian */
#define DRM_FORMAT_BGR888	fourcc_code('B', 'G', '2', '4') /* [23:0] B:G:R little endian */

/* 32 bpp RGB */
#define DRM_FORMAT_XRGB8888	fourcc_code('X', 'R', '2', '4') /* [31:0] x:R:G:B 8:8:8:8 little endian */
#define DRM_FORMAT_XBGR8888	fourcc_code('X', 'B', '2', '4') /* [31:0] x:B:G:R 8:8:8:8 little endian */
#define DRM_FORMAT_RGBX8888	fourcc_code('R', 'X', '2', '4') /* [31:0] R:G:B:x 8:8:8:8 little endian */
#define DRM_FORMAT_BGRX8888	fourcc_code('B', 'X', '2', '4') /* [31:0] B:G:R:x 8:8:8:8 little endian */

#define DRM_FORMAT_ARGB8888	fourcc_code('A', 'R', '2', '4') /* [31:0] A:R:G:B 8:8:8:8 little endian */
#define DRM_FORMAT_ABGR8888	fourcc_code('A', 'B', '2', '4') /* [31:0] A:B:G:R 8:8:8:8 little endian */
#define DRM_FORMAT_RGBA8888	fourcc_code('R', 'A', '2', '4') /* [31:0] R:G:B:A 8:8:8:8 little endian */
#define DRM_FORMAT_BGRA8888	fourcc_code('B', 'A', '2', '4') /* [31:0] B:G:R:A 8:8:8:8 little endian */

#define DRM_FORMAT_XRGB2101010	fourcc_code('X', 'R', '3', '0') /* [31:0] x:R:G:B 2:10:10:10 little endian */
#define DRM_FORMAT_XBGR2101010	fourcc_code('X', 'B', '3', '0') /* [31:0] x:B:G:R 2:10:10:10 little endian */
#define DRM_FORMAT_RGBX1010102	fourcc_code('R', 'X', '3', '0') /* [31:0] R:G:B:x 10:10:10:2 little endian */
#define DRM_FORMAT_BGRX1010102	fourcc_code('B', 'X', '3', '0') /* [31:0] B:G:R:x 10:10:10:2 little endian */

#define DRM_FORMAT_ARGB2101010	fourcc_code('A', 'R', '3', '0') /* [31:0] A:R:G:B 2:10:10:10 little endian */
#define DRM_FORMAT_ABGR2101010	fourcc_code('A', 'B', '3', '0') /* [31:0] A:B:G:R 2:10:10:10 little endian */
#define DRM_FORMAT_RGBA1010102	fourcc_code('R', 'A', '3', '0') /* [31:0] R:G:B:A 10:10:10:2 little endian */
#define DRM_FORMAT_BGRA1010102	fourcc_code('B', 'A', '3', '0') /* [31:0] B:G:R:A 10:10:10:2 little endian */

/*
 * Floating point 64bpp RGB
 * IEEE 754-2008 binary16 half-precision float
 * [15:0] sign:exponent:mantissa 1:5:10
 */
#define DRM_FORMAT_XRGB16161616F fourcc_code('X', 'R', '4', 'H') /* [63:0] x:R:G:B 16:16:16:16 little endian */
#define DRM_FORMAT_XBGR16161616F fourcc_code('X', 'B', '4', 'H') /* [63:0] x:B:G:R 16:16:16:16 little endian */

#define DRM_FORMAT_ARGB16161616F fourcc_code('A', 'R', '4', 'H') /* [63:0] A:R:G:B 16:16:16:16 little endian */
#define DRM_FORMAT_ABGR16161616F fourcc_code('A', 'B', '4', 'H') /* [63:0] A:B:G:R 16:16:16:16 little endian */

/* packed YCbCr */
#define DRM_FORMAT_YUYV		fourcc_code('Y', 'U', 'Y', 'V') /* [31:0] Cr0:Y1:Cb0:Y0 8:8:8:8 little endian */
#define DRM_FORMAT_YVYU		fourcc_code('Y', 'V', 'Y', 'U') /* [31:0] Cb0:Y1:Cr0:Y0 8:8:8:8 little endian */
#define DRM_FORMAT_UYVY		fourcc_code('U', 'Y', 'V', 'Y') /* [31:0] Y1:Cr0:Y0:Cb0 8:8:8:8 little endian */
#define DRM_FORMAT_VYUY		fourcc_code('V', 'Y', 'U', 'Y') /* [31:0] Y1:Cb0:Y0:Cr0 8:8:8:8 little endian */

#define DRM_FORMAT_AYUV		fourcc_code('A', 'Y', 'U', 'V') /* [31:0] A:Y:Cb:Cr 8:8:8:8 little endian */

/*
 * 2 plane YCbCr
 * index 0 = Y plane, [7:0] Y
 * index 1 = Cr:Cb plane, [15:0] Cr:Cb little endian
 * or
 * index 1 = Cb:Cr plane, [15:0] Cb:Cr little endian
 */
#define DRM_FORMAT_NV12		fourcc_code('N', 'V', '1', '2') /* 2x2 subsampled Cr:Cb plane */
#define DRM_FORMAT_NV21		fourcc_code('N', 'V', '2', '1') /* 2x2 subsampled Cb:Cr plane */
#define DRM_FORMAT_NV16		fourcc_code('N', 'V', '1', '6') /* 2x1 subsampled Cr:Cb plane */
#define DRM_FORMAT_NV61		fourcc_code('N', 'V', '6', '1') /* 2x1 subsampled Cb:Cr plane */
#define DRM_FORMAT_NV24		fourcc_code('N', 'V', '2', '4') /* non-subsampled Cr:Cb plane */
#define DRM_FORMAT_NV42		fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */

/*
 * 3 plane YCbCr
 * index 0: Y plane, [7:0] Y
 * index 1: Cb plane, [7:0] Cb
 * index 2: Cr plane, [7:0] Cr
 * or
 * index 1: Cr plane, [7:0] Cr
 * index 2: Cb plane, [7:0] Cb
 */
#define DRM_FORMAT_YUV410	fourcc_code('Y', 'U', 'V', '9') /* 4x4 subsampled Cb (1) and Cr (2) planes */
#define DRM_FORMAT_YVU410	fourcc_code('Y', 'V', 'U', '9') /* 4x4 subsampled Cr (1) and Cb (2) planes */
#define DRM_FORMAT_YUV411	fourcc_code('Y', 'U', '1', '1') /* 4x1 subsampled Cb (1) and Cr (2) planes */
#define DRM_FORMAT_YVU411	fourcc_code('Y', 'V', '1', '1') /* 4x1 subsampled Cr (1) and Cb (2) planes */
#define DRM_FORMAT_YUV420	fourcc_code('Y', 'U', '1', '2') /* 2x2 subsampled Cb (1) and Cr (2) planes */
#define DRM_FORMAT_YVU420	fourcc_code('Y', 'V', '1', '2') /* 2x2 subsampled Cr (1) and Cb (2) planes */
#define DRM_FORMAT_YUV422	fourcc_code('Y', 'U', '1', '6') /* 2x1 subsampled Cb (1) and Cr (2) planes */
#define DRM_FORMAT_YVU422	fourcc_code('Y', 'V', '1', '6') /* 2x1 subsampled Cr (1) and Cb (2) planes */
#define DRM_FORMAT_YUV444	fourcc_code('Y', 'U', '2', '4') /* non-subsampled Cb (1) and Cr (2) planes */
#define DRM_FORMAT_YVU444	fourcc_code('Y', 'V', '2', '4') /* non-subsampled Cr (1) and Cb (2) planes */


/*
 * Format Modifiers:
 *
 * Format modifiers describe, typically, a re-ordering or modification
 * of the data in a plane of an FB.  This can be used to express tiled/
 * swizzled formats, or compression, or a combination of the two.
 *
 * The upper 8 bits of the format modifier are a vendor-id as assigned
 * below.  The lower 56 bits are assigned as vendor sees fit.
 */

/* Vendor Ids: */
#define DRM_FORMAT_MOD_NONE           0
#define DRM_FORMAT_MOD_VENDOR_NONE    0
#define DRM_FORMAT_MOD_VENDOR_INTEL   0x01
#define DRM_FORMAT_MOD_VENDOR_AMD     0x02
#define DRM_FORMAT_MOD_VENDOR_NV      0x03
#define DRM_FORMAT_MOD_VENDOR_SAMSUNG 0x04
#define DRM_FORMAT_MOD_VENDOR_QCOM    0x05
#define DRM_FORMAT_MOD_VENDOR_ARM     0x08
#define DRM_FORMAT_MOD_VENDOR_AMLOGIC    0x0a
/* add more to the end as needed */

#define DRM_FORMAT_RESERVED	      ((1ULL << 56) - 1)

#define fourcc_mod_code(vendor, val) \
	((((__u64)DRM_FORMAT_MOD_VENDOR_## vendor) << 56) | ((val) & 0x00ffffffffffffffULL))

/*
 * Format Modifier tokens:
 *
 * When adding a new token please document the layout with a code comment,
 * similar to the fourcc codes above. drm_fourcc.h is considered the
 * authoritative source for all of these.
 */

/*
 * Invalid Modifier
 *
 * This modifier can be used as a sentinel to terminate the format modifiers
 * list, or to initialize a variable with an invalid modifier. It might also be
 * used to report an error back to userspace for certain APIs.
 */
#define DRM_FORMAT_MOD_INVALID	fourcc_mod_code(NONE, DRM_FORMAT_RESERVED)

/*
 * Linear Layout
 *
 * Just plain linear layout. Note that this is different from no specifying any
 * modifier (e.g. not setting DRM_MODE_FB_MODIFIERS in the DRM_ADDFB2 ioctl),
 * which tells the driver to also take driver-internal information into account
 * and so might actually result in a tiled framebuffer.
 */
#define DRM_FORMAT_MOD_LINEAR	fourcc_mod_code(NONE, 0)

/* Intel framebuffer modifiers */

/*
 * Intel X-tiling layout
 *
 * This is a tiled layout using 4Kb tiles (except on gen2 where the tiles 2Kb)
 * in row-major layout. Within the tile bytes are laid out row-major, with
 * a platform-dependent stride. On top of that the memory can apply
 * platform-depending swizzling of some higher address bits into bit6.
 *
 * This format is highly platforms specific and not useful for cross-driver
 * sharing. It exists since on a given platform it does uniquely identify the
 * layout in a simple way for i915-specific userspace.
 */
#define I915_FORMAT_MOD_X_TILED	fourcc_mod_code(INTEL, 1)

/*
 * Intel Y-tiling layout
 *
 * This is a tiled layout using 4Kb tiles (except on gen2 where the tiles 2Kb)
 * in row-major layout. Within the tile bytes are laid out in OWORD (16 bytes)
 * chunks column-major, with a platform-dependent height. On top of that the
 * memory can apply platform-depending swizzling of some higher address bits
 * into bit6.
 *
 * This format is highly platforms specific and not useful for cross-driver
 * sharing. It exists since on a given platform it does uniquely identify the
 * layout in a simple way for i915-specific userspace.
 */
#define I915_FORMAT_MOD_Y_TILED	fourcc_mod_code(INTEL, 2)

/*
 * Intel Yf-tiling layout
 *
 * This is a tiled layout using 4Kb tiles in row-major layout.
 * Within the tile pixels are laid out in 16 256 byte units / sub-tiles which
 * are arranged in four groups (two wide, two high) with column-major layout.
 * Each group therefore consits out of four 256 byte units, which are also laid
 * out as 2x2 column-major.
 * 256 byte units are made out of four 64 byte blocks of pixels, producing
 * either a square block or a 2:1 unit.
 * 64 byte blocks of pixels contain four pixel rows of 16 bytes, where the width
 * in pixel depends on the pixel depth.
 */
#define I915_FORMAT_MOD_Yf_TILED fourcc_mod_code(INTEL, 3)

/*
 * Tiled, NV12MT, grouped in 64 (pixels) x 32 (lines) -sized macroblocks
 *
 * Macroblocks are laid in a Z-shape, and each pixel data is following the
 * standard NV12 style.
 * As for NV12, an image is the result of two frame buffers: one for Y,
 * one for the interleaved Cb/Cr components (1/2 the height of the Y buffer).
 * Alignment requirements are (for each buffer):
 * - multiple of 128 pixels for the width
 * - multiple of  32 pixels for the height
 *
 * For more information: see https://linuxtv.org/downloads/v4l-dvb-apis/re32.html
 */
#define DRM_FORMAT_MOD_SAMSUNG_64_32_TILE	fourcc_mod_code(SAMSUNG, 1)

/*
 * Arm Framebuffer Compression (AFBC) modifiers
 *
 * AFBC is a proprietary lossless image compression protocol and format.
 * It provides fine-grained random access and minimizes the amount of data
 * transferred between IP blocks.
 *
 * AFBC has several features which may be supported and/or used, which are
 * represented using bits in the modifier. Not all combinations are valid,
 * and different devices or use-cases may support different combinations.
 */

/*
 * The top 4 bits (out of the 56 bits alloted for specifying vendor specific
 * modifiers) denote the category for modifiers. Currently we have only two
 * categories of modifiers ie AFBC and MISC. We can have a maximum of sixteen
 * different categories.
 */
#define DRM_FORMAT_MOD_ARM_CODE(__type, __val) \
	fourcc_mod_code(ARM, ((__u64)(__type) << 52) | ((__val) & 0x000fffffffffffffULL))

#define DRM_FORMAT_MOD_ARM_TYPE_AFBC 0x00
#define DRM_FORMAT_MOD_ARM_TYPE_MISC 0x01

#define DRM_FORMAT_MOD_ARM_AFBC(__afbc_mode) \
	DRM_FORMAT_MOD_ARM_CODE(DRM_FORMAT_MOD_ARM_TYPE_AFBC, __afbc_mode)

/*
 * AFBC superblock size
 *
 * Indicates the superblock size(s) used for the AFBC buffer. The buffer
 * size (in pixels) must be aligned to a multiple of the superblock size.
 * Four lowest significant bits(LSBs) are reserved for block size.
 *
 * Where one superblock size is specified, it applies to all planes of the
 * buffer (e.g. 16x16, 32x8). When multiple superblock sizes are specified,
 * the first applies to the Luma plane and the second applies to the Chroma
 * plane(s). e.g. (32x8_64x4 means 32x8 Luma, with 64x4 Chroma).
 * Multiple superblock sizes are only valid for multi-plane YCbCr formats.
 */
#define AFBC_FORMAT_MOD_BLOCK_SIZE_MASK      0xf
#define AFBC_FORMAT_MOD_BLOCK_SIZE_16x16     (1ULL)
#define AFBC_FORMAT_MOD_BLOCK_SIZE_32x8      (2ULL)
#define AFBC_FORMAT_MOD_BLOCK_SIZE_64x4      (3ULL)
#define AFBC_FORMAT_MOD_BLOCK_SIZE_32x8_64x4 (4ULL)

/*
 * AFBC lossless colorspace transform
 *
 * Indicates that the buffer makes use of the AFBC lossless colorspace
 * transform.
 */
#define AFBC_FORMAT_MOD_YTR     (1ULL <<  4)

/*
 * AFBC block-split
 *
 * Indicates that the payload of each superblock is split. The second
 * half of the payload is positioned at a predefined offset from the start
 * of the superblock payload.
 */
#define AFBC_FORMAT_MOD_SPLIT   (1ULL <<  5)

/*
 * AFBC sparse layout
 *
 * This flag indicates that the payload of each superblock must be stored at a
 * predefined position relative to the other superblocks in the same AFBC
 * buffer. This order is the same order used by the header buffer. In this mode
 * each superblock is given the same amount of space as an uncompressed
 * superblock of the particular format would require, rounding up to the next
 * multiple of 128 bytes in size.
 */
#define AFBC_FORMAT_MOD_SPARSE  (1ULL <<  6)

/*
 * AFBC copy-block restrict
 *
 * Buffers with this flag must obey the copy-block restriction. The restriction
 * is such that there are no copy-blocks referring across the border of 8x8
 * blocks. For the subsampled data the 8x8 limitation is also subsampled.
 */
#define AFBC_FORMAT_MOD_CBR     (1ULL <<  7)

/*
 * AFBC tiled layout
 *
 * The tiled layout groups superblocks in 8x8 or 4x4 tiles, where all
 * superblocks inside a tile are stored together in memory. 8x8 tiles are used
 * for pixel formats up to and including 32 bpp while 4x4 tiles are used for
 * larger bpp formats. The order between the tiles is scan line.
 * When the tiled layout is used, the buffer size (in pixels) must be aligned
 * to the tile size.
 */
#define AFBC_FORMAT_MOD_TILED   (1ULL <<  8)

/*
 * AFBC solid color blocks
 *
 * Indicates that the buffer makes use of solid-color blocks, whereby bandwidth
 * can be reduced if a whole superblock is a single color.
 */
#define AFBC_FORMAT_MOD_SC      (1ULL <<  9)

/*
 * AFBC double-buffer
 *
 * Indicates that the buffer is allocated in a layout safe for front-buffer
 * rendering.
 */
#define AFBC_FORMAT_MOD_DB      (1ULL << 10)

/*
 * AFBC buffer content hints
 *
 * Indicates that the buffer includes per-superblock content hints.
 */
#define AFBC_FORMAT_MOD_BCH     (1ULL << 11)

/*
 * Arm 16x16 Block U-Interleaved modifier
 *
 * This is used by Arm Mali Utgard and Midgard GPUs. It divides the image
 * into 16x16 pixel blocks. Blocks are stored linearly in order, but pixels
 * in the block are reordered.
 */
#define DRM_FORMAT_MOD_ARM_16X16_BLOCK_U_INTERLEAVED \
	DRM_FORMAT_MOD_ARM_CODE(DRM_FORMAT_MOD_ARM_TYPE_MISC, 1ULL)

#define DRM_FORMAT_MOD_MESON_AFBC	fourcc_mod_code(AMLOGIC, 1)
#define DRM_FORMAT_MOD_MESON_AFBC_WB	fourcc_mod_code(AMLOGIC, 2)

#if defined(__cplusplus)
}
#endif

#endif /* DRM_FOURCC_H */