1 /* 2 * Copyright © 2011 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 19 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 20 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 22 * DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: 25 * Benjamin Franzke <benjaminfranzke@googlemail.com> 26 */ 27 28 #ifndef _GBM_H_ 29 #define _GBM_H_ 30 31 #define __GBM__ 1 32 33 #include <stddef.h> 34 #include <stdint.h> 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 41 /** 42 * \file gbm.h 43 * \brief Generic Buffer Manager 44 */ 45 46 struct gbm_device; 47 struct gbm_bo; 48 struct gbm_surface; 49 50 /** 51 * \mainpage The Generic Buffer Manager 52 * 53 * This module provides an abstraction that the caller can use to request a 54 * buffer from the underlying memory management system for the platform. 55 * 56 * This allows the creation of portable code whilst still allowing access to 57 * the underlying memory manager. 58 */ 59 60 /** 61 * Abstraction representing the handle to a buffer allocated by the 62 * manager 63 */ 64 union gbm_bo_handle { 65 void *ptr; 66 int32_t s32; 67 uint32_t u32; 68 int64_t s64; 69 uint64_t u64; 70 }; 71 72 /** Format of the allocated buffer */ 73 enum gbm_bo_format { 74 /** RGB with 8 bits per channel in a 32 bit value */ 75 GBM_BO_FORMAT_XRGB8888, 76 /** ARGB with 8 bits per channel in a 32 bit value */ 77 GBM_BO_FORMAT_ARGB8888 78 }; 79 80 81 /** 82 * The FourCC format codes are taken from the drm_fourcc.h definition, and 83 * re-namespaced. New GBM formats must not be added, unless they are 84 * identical ports from drm_fourcc. 85 */ 86 #define __gbm_fourcc_code(a,b,c,d) ((uint32_t)(a) | ((uint32_t)(b) << 8) | \ 87 ((uint32_t)(c) << 16) | ((uint32_t)(d) << 24)) 88 89 #define GBM_FORMAT_BIG_ENDIAN (1<<31) /* format is big endian instead of little endian */ 90 91 /* color index */ 92 #define GBM_FORMAT_C8 __gbm_fourcc_code('C', '8', ' ', ' ') /* [7:0] C */ 93 94 /* 8 bpp Red */ 95 #define GBM_FORMAT_R8 __gbm_fourcc_code('R', '8', ' ', ' ') /* [7:0] R */ 96 97 /* 16 bpp RG */ 98 #define GBM_FORMAT_GR88 __gbm_fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */ 99 100 /* 8 bpp RGB */ 101 #define GBM_FORMAT_RGB332 __gbm_fourcc_code('R', 'G', 'B', '8') /* [7:0] R:G:B 3:3:2 */ 102 #define GBM_FORMAT_BGR233 __gbm_fourcc_code('B', 'G', 'R', '8') /* [7:0] B:G:R 2:3:3 */ 103 104 /* 16 bpp RGB */ 105 #define GBM_FORMAT_XRGB4444 __gbm_fourcc_code('X', 'R', '1', '2') /* [15:0] x:R:G:B 4:4:4:4 little endian */ 106 #define GBM_FORMAT_XBGR4444 __gbm_fourcc_code('X', 'B', '1', '2') /* [15:0] x:B:G:R 4:4:4:4 little endian */ 107 #define GBM_FORMAT_RGBX4444 __gbm_fourcc_code('R', 'X', '1', '2') /* [15:0] R:G:B:x 4:4:4:4 little endian */ 108 #define GBM_FORMAT_BGRX4444 __gbm_fourcc_code('B', 'X', '1', '2') /* [15:0] B:G:R:x 4:4:4:4 little endian */ 109 110 #define GBM_FORMAT_ARGB4444 __gbm_fourcc_code('A', 'R', '1', '2') /* [15:0] A:R:G:B 4:4:4:4 little endian */ 111 #define GBM_FORMAT_ABGR4444 __gbm_fourcc_code('A', 'B', '1', '2') /* [15:0] A:B:G:R 4:4:4:4 little endian */ 112 #define GBM_FORMAT_RGBA4444 __gbm_fourcc_code('R', 'A', '1', '2') /* [15:0] R:G:B:A 4:4:4:4 little endian */ 113 #define GBM_FORMAT_BGRA4444 __gbm_fourcc_code('B', 'A', '1', '2') /* [15:0] B:G:R:A 4:4:4:4 little endian */ 114 115 #define GBM_FORMAT_XRGB1555 __gbm_fourcc_code('X', 'R', '1', '5') /* [15:0] x:R:G:B 1:5:5:5 little endian */ 116 #define GBM_FORMAT_XBGR1555 __gbm_fourcc_code('X', 'B', '1', '5') /* [15:0] x:B:G:R 1:5:5:5 little endian */ 117 #define GBM_FORMAT_RGBX5551 __gbm_fourcc_code('R', 'X', '1', '5') /* [15:0] R:G:B:x 5:5:5:1 little endian */ 118 #define GBM_FORMAT_BGRX5551 __gbm_fourcc_code('B', 'X', '1', '5') /* [15:0] B:G:R:x 5:5:5:1 little endian */ 119 120 #define GBM_FORMAT_ARGB1555 __gbm_fourcc_code('A', 'R', '1', '5') /* [15:0] A:R:G:B 1:5:5:5 little endian */ 121 #define GBM_FORMAT_ABGR1555 __gbm_fourcc_code('A', 'B', '1', '5') /* [15:0] A:B:G:R 1:5:5:5 little endian */ 122 #define GBM_FORMAT_RGBA5551 __gbm_fourcc_code('R', 'A', '1', '5') /* [15:0] R:G:B:A 5:5:5:1 little endian */ 123 #define GBM_FORMAT_BGRA5551 __gbm_fourcc_code('B', 'A', '1', '5') /* [15:0] B:G:R:A 5:5:5:1 little endian */ 124 125 #define GBM_FORMAT_RGB565 __gbm_fourcc_code('R', 'G', '1', '6') /* [15:0] R:G:B 5:6:5 little endian */ 126 #define GBM_FORMAT_BGR565 __gbm_fourcc_code('B', 'G', '1', '6') /* [15:0] B:G:R 5:6:5 little endian */ 127 128 /* 24 bpp RGB */ 129 #define GBM_FORMAT_RGB888 __gbm_fourcc_code('R', 'G', '2', '4') /* [23:0] R:G:B little endian */ 130 #define GBM_FORMAT_BGR888 __gbm_fourcc_code('B', 'G', '2', '4') /* [23:0] B:G:R little endian */ 131 132 /* 32 bpp RGB */ 133 #define GBM_FORMAT_XRGB8888 __gbm_fourcc_code('X', 'R', '2', '4') /* [31:0] x:R:G:B 8:8:8:8 little endian */ 134 #define GBM_FORMAT_XBGR8888 __gbm_fourcc_code('X', 'B', '2', '4') /* [31:0] x:B:G:R 8:8:8:8 little endian */ 135 #define GBM_FORMAT_RGBX8888 __gbm_fourcc_code('R', 'X', '2', '4') /* [31:0] R:G:B:x 8:8:8:8 little endian */ 136 #define GBM_FORMAT_BGRX8888 __gbm_fourcc_code('B', 'X', '2', '4') /* [31:0] B:G:R:x 8:8:8:8 little endian */ 137 138 #define GBM_FORMAT_ARGB8888 __gbm_fourcc_code('A', 'R', '2', '4') /* [31:0] A:R:G:B 8:8:8:8 little endian */ 139 #define GBM_FORMAT_ABGR8888 __gbm_fourcc_code('A', 'B', '2', '4') /* [31:0] A:B:G:R 8:8:8:8 little endian */ 140 #define GBM_FORMAT_RGBA8888 __gbm_fourcc_code('R', 'A', '2', '4') /* [31:0] R:G:B:A 8:8:8:8 little endian */ 141 #define GBM_FORMAT_BGRA8888 __gbm_fourcc_code('B', 'A', '2', '4') /* [31:0] B:G:R:A 8:8:8:8 little endian */ 142 143 #define GBM_FORMAT_XRGB2101010 __gbm_fourcc_code('X', 'R', '3', '0') /* [31:0] x:R:G:B 2:10:10:10 little endian */ 144 #define GBM_FORMAT_XBGR2101010 __gbm_fourcc_code('X', 'B', '3', '0') /* [31:0] x:B:G:R 2:10:10:10 little endian */ 145 #define GBM_FORMAT_RGBX1010102 __gbm_fourcc_code('R', 'X', '3', '0') /* [31:0] R:G:B:x 10:10:10:2 little endian */ 146 #define GBM_FORMAT_BGRX1010102 __gbm_fourcc_code('B', 'X', '3', '0') /* [31:0] B:G:R:x 10:10:10:2 little endian */ 147 148 #define GBM_FORMAT_ARGB2101010 __gbm_fourcc_code('A', 'R', '3', '0') /* [31:0] A:R:G:B 2:10:10:10 little endian */ 149 #define GBM_FORMAT_ABGR2101010 __gbm_fourcc_code('A', 'B', '3', '0') /* [31:0] A:B:G:R 2:10:10:10 little endian */ 150 #define GBM_FORMAT_RGBA1010102 __gbm_fourcc_code('R', 'A', '3', '0') /* [31:0] R:G:B:A 10:10:10:2 little endian */ 151 #define GBM_FORMAT_BGRA1010102 __gbm_fourcc_code('B', 'A', '3', '0') /* [31:0] B:G:R:A 10:10:10:2 little endian */ 152 153 /* 154 * Floating point 64bpp RGB 155 * IEEE 754-2008 binary16 half-precision float 156 * [15:0] sign:exponent:mantissa 1:5:10 157 */ 158 #define GBM_FORMAT_XBGR16161616F __gbm_fourcc_code('X', 'B', '4', 'H') /* [63:0] x:B:G:R 16:16:16:16 little endian */ 159 160 #define GBM_FORMAT_ABGR16161616F __gbm_fourcc_code('A', 'B', '4', 'H') /* [63:0] A:B:G:R 16:16:16:16 little endian */ 161 162 /* packed YCbCr */ 163 #define GBM_FORMAT_YUYV __gbm_fourcc_code('Y', 'U', 'Y', 'V') /* [31:0] Cr0:Y1:Cb0:Y0 8:8:8:8 little endian */ 164 #define GBM_FORMAT_YVYU __gbm_fourcc_code('Y', 'V', 'Y', 'U') /* [31:0] Cb0:Y1:Cr0:Y0 8:8:8:8 little endian */ 165 #define GBM_FORMAT_UYVY __gbm_fourcc_code('U', 'Y', 'V', 'Y') /* [31:0] Y1:Cr0:Y0:Cb0 8:8:8:8 little endian */ 166 #define GBM_FORMAT_VYUY __gbm_fourcc_code('V', 'Y', 'U', 'Y') /* [31:0] Y1:Cb0:Y0:Cr0 8:8:8:8 little endian */ 167 168 #define GBM_FORMAT_AYUV __gbm_fourcc_code('A', 'Y', 'U', 'V') /* [31:0] A:Y:Cb:Cr 8:8:8:8 little endian */ 169 170 /* 171 * 2 plane YCbCr 172 * index 0 = Y plane, [7:0] Y 173 * index 1 = Cr:Cb plane, [15:0] Cr:Cb little endian 174 * or 175 * index 1 = Cb:Cr plane, [15:0] Cb:Cr little endian 176 */ 177 #define GBM_FORMAT_NV12 __gbm_fourcc_code('N', 'V', '1', '2') /* 2x2 subsampled Cr:Cb plane */ 178 #define GBM_FORMAT_NV21 __gbm_fourcc_code('N', 'V', '2', '1') /* 2x2 subsampled Cb:Cr plane */ 179 #define GBM_FORMAT_NV16 __gbm_fourcc_code('N', 'V', '1', '6') /* 2x1 subsampled Cr:Cb plane */ 180 #define GBM_FORMAT_NV61 __gbm_fourcc_code('N', 'V', '6', '1') /* 2x1 subsampled Cb:Cr plane */ 181 182 /* 183 * 3 plane YCbCr 184 * index 0: Y plane, [7:0] Y 185 * index 1: Cb plane, [7:0] Cb 186 * index 2: Cr plane, [7:0] Cr 187 * or 188 * index 1: Cr plane, [7:0] Cr 189 * index 2: Cb plane, [7:0] Cb 190 */ 191 #define GBM_FORMAT_YUV410 __gbm_fourcc_code('Y', 'U', 'V', '9') /* 4x4 subsampled Cb (1) and Cr (2) planes */ 192 #define GBM_FORMAT_YVU410 __gbm_fourcc_code('Y', 'V', 'U', '9') /* 4x4 subsampled Cr (1) and Cb (2) planes */ 193 #define GBM_FORMAT_YUV411 __gbm_fourcc_code('Y', 'U', '1', '1') /* 4x1 subsampled Cb (1) and Cr (2) planes */ 194 #define GBM_FORMAT_YVU411 __gbm_fourcc_code('Y', 'V', '1', '1') /* 4x1 subsampled Cr (1) and Cb (2) planes */ 195 #define GBM_FORMAT_YUV420 __gbm_fourcc_code('Y', 'U', '1', '2') /* 2x2 subsampled Cb (1) and Cr (2) planes */ 196 #define GBM_FORMAT_YVU420 __gbm_fourcc_code('Y', 'V', '1', '2') /* 2x2 subsampled Cr (1) and Cb (2) planes */ 197 #define GBM_FORMAT_YUV422 __gbm_fourcc_code('Y', 'U', '1', '6') /* 2x1 subsampled Cb (1) and Cr (2) planes */ 198 #define GBM_FORMAT_YVU422 __gbm_fourcc_code('Y', 'V', '1', '6') /* 2x1 subsampled Cr (1) and Cb (2) planes */ 199 #define GBM_FORMAT_YUV444 __gbm_fourcc_code('Y', 'U', '2', '4') /* non-subsampled Cb (1) and Cr (2) planes */ 200 #define GBM_FORMAT_YVU444 __gbm_fourcc_code('Y', 'V', '2', '4') /* non-subsampled Cr (1) and Cb (2) planes */ 201 202 struct gbm_format_name_desc { 203 char name[5]; 204 }; 205 206 /** 207 * Flags to indicate the intended use for the buffer - these are passed into 208 * gbm_bo_create(). The caller must set the union of all the flags that are 209 * appropriate 210 * 211 * \sa Use gbm_device_is_format_supported() to check if the combination of format 212 * and use flags are supported 213 */ 214 enum gbm_bo_flags { 215 /** 216 * Buffer is going to be presented to the screen using an API such as KMS 217 */ 218 GBM_BO_USE_SCANOUT = (1 << 0), 219 /** 220 * Buffer is going to be used as cursor 221 */ 222 GBM_BO_USE_CURSOR = (1 << 1), 223 /** 224 * Deprecated 225 */ 226 GBM_BO_USE_CURSOR_64X64 = GBM_BO_USE_CURSOR, 227 /** 228 * Buffer is to be used for rendering - for example it is going to be used 229 * as the storage for a color buffer 230 */ 231 GBM_BO_USE_RENDERING = (1 << 2), 232 /** 233 * Buffer can be used for gbm_bo_write. This is guaranteed to work 234 * with GBM_BO_USE_CURSOR, but may not work for other combinations. 235 */ 236 GBM_BO_USE_WRITE = (1 << 3), 237 /** 238 * Buffer is linear, i.e. not tiled. 239 */ 240 GBM_BO_USE_LINEAR = (1 << 4), 241 /** 242 * Buffer is protected, i.e. encrypted and not readable by CPU or any 243 * other non-secure / non-trusted components nor by non-trusted OpenGL, 244 * OpenCL, and Vulkan applications. 245 */ 246 GBM_BO_USE_PROTECTED = (1 << 5), 247 }; 248 249 int 250 gbm_device_get_fd(struct gbm_device *gbm); 251 252 const char * 253 gbm_device_get_backend_name(struct gbm_device *gbm); 254 255 int 256 gbm_device_is_format_supported(struct gbm_device *gbm, 257 uint32_t format, uint32_t usage); 258 259 int 260 gbm_device_get_format_modifier_plane_count(struct gbm_device *gbm, 261 uint32_t format, 262 uint64_t modifier); 263 264 void 265 gbm_device_destroy(struct gbm_device *gbm); 266 267 struct gbm_device * 268 gbm_create_device(int fd); 269 270 struct gbm_bo * 271 gbm_bo_create(struct gbm_device *gbm, 272 uint32_t width, uint32_t height, 273 uint32_t format, uint32_t flags); 274 275 struct gbm_bo * 276 gbm_bo_create_with_modifiers(struct gbm_device *gbm, 277 uint32_t width, uint32_t height, 278 uint32_t format, 279 const uint64_t *modifiers, 280 const unsigned int count); 281 #define GBM_BO_IMPORT_WL_BUFFER 0x5501 282 #define GBM_BO_IMPORT_EGL_IMAGE 0x5502 283 #define GBM_BO_IMPORT_FD 0x5503 284 #define GBM_BO_IMPORT_FD_MODIFIER 0x5504 285 286 struct gbm_import_fd_data { 287 int fd; 288 uint32_t width; 289 uint32_t height; 290 uint32_t stride; 291 uint32_t format; 292 }; 293 294 #define GBM_MAX_PLANES 4 295 296 struct gbm_import_fd_modifier_data { 297 uint32_t width; 298 uint32_t height; 299 uint32_t format; 300 uint32_t num_fds; 301 int fds[GBM_MAX_PLANES]; 302 int strides[GBM_MAX_PLANES]; 303 int offsets[GBM_MAX_PLANES]; 304 uint64_t modifier; 305 }; 306 307 struct gbm_bo * 308 gbm_bo_import(struct gbm_device *gbm, uint32_t type, 309 void *buffer, uint32_t usage); 310 311 /** 312 * Flags to indicate the type of mapping for the buffer - these are 313 * passed into gbm_bo_map(). The caller must set the union of all the 314 * flags that are appropriate. 315 * 316 * These flags are independent of the GBM_BO_USE_* creation flags. However, 317 * mapping the buffer may require copying to/from a staging buffer. 318 * 319 * See also: pipe_map_flags 320 */ 321 enum gbm_bo_transfer_flags { 322 /** 323 * Buffer contents read back (or accessed directly) at transfer 324 * create time. 325 */ 326 GBM_BO_TRANSFER_READ = (1 << 0), 327 /** 328 * Buffer contents will be written back at unmap time 329 * (or modified as a result of being accessed directly). 330 */ 331 GBM_BO_TRANSFER_WRITE = (1 << 1), 332 /** 333 * Read/modify/write 334 */ 335 GBM_BO_TRANSFER_READ_WRITE = (GBM_BO_TRANSFER_READ | GBM_BO_TRANSFER_WRITE), 336 }; 337 338 void * 339 gbm_bo_map(struct gbm_bo *bo, 340 uint32_t x, uint32_t y, uint32_t width, uint32_t height, 341 uint32_t flags, uint32_t *stride, void **map_data); 342 343 void 344 gbm_bo_unmap(struct gbm_bo *bo, void *map_data); 345 346 uint32_t 347 gbm_bo_get_width(struct gbm_bo *bo); 348 349 uint32_t 350 gbm_bo_get_height(struct gbm_bo *bo); 351 352 uint32_t 353 gbm_bo_get_stride(struct gbm_bo *bo); 354 355 uint32_t 356 gbm_bo_get_stride_for_plane(struct gbm_bo *bo, int plane); 357 358 uint32_t 359 gbm_bo_get_format(struct gbm_bo *bo); 360 361 uint32_t 362 gbm_bo_get_bpp(struct gbm_bo *bo); 363 364 uint32_t 365 gbm_bo_get_offset(struct gbm_bo *bo, int plane); 366 367 struct gbm_device * 368 gbm_bo_get_device(struct gbm_bo *bo); 369 370 union gbm_bo_handle 371 gbm_bo_get_handle(struct gbm_bo *bo); 372 373 int 374 gbm_bo_get_fd(struct gbm_bo *bo); 375 376 uint64_t 377 gbm_bo_get_modifier(struct gbm_bo *bo); 378 379 int 380 gbm_bo_get_plane_count(struct gbm_bo *bo); 381 382 union gbm_bo_handle 383 gbm_bo_get_handle_for_plane(struct gbm_bo *bo, int plane); 384 385 int 386 gbm_bo_write(struct gbm_bo *bo, const void *buf, size_t count); 387 388 void 389 gbm_bo_set_user_data(struct gbm_bo *bo, void *data, 390 void (*destroy_user_data)(struct gbm_bo *, void *)); 391 392 void * 393 gbm_bo_get_user_data(struct gbm_bo *bo); 394 395 void 396 gbm_bo_destroy(struct gbm_bo *bo); 397 398 struct gbm_surface * 399 gbm_surface_create(struct gbm_device *gbm, 400 uint32_t width, uint32_t height, 401 uint32_t format, uint32_t flags); 402 403 struct gbm_surface * 404 gbm_surface_create_with_modifiers(struct gbm_device *gbm, 405 uint32_t width, uint32_t height, 406 uint32_t format, 407 const uint64_t *modifiers, 408 const unsigned int count); 409 410 struct gbm_bo * 411 gbm_surface_lock_front_buffer(struct gbm_surface *surface); 412 413 void 414 gbm_surface_release_buffer(struct gbm_surface *surface, struct gbm_bo *bo); 415 416 int 417 gbm_surface_has_free_buffers(struct gbm_surface *surface); 418 419 void 420 gbm_surface_destroy(struct gbm_surface *surface); 421 422 char * 423 gbm_format_get_name(uint32_t gbm_format, struct gbm_format_name_desc *desc); 424 425 #ifdef __cplusplus 426 } 427 #endif 428 429 #endif 430