gbm.h 16 KB

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  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. #ifndef _GBM_H_
  28. #define _GBM_H_
  29. #define __GBM__ 1
  30. #include <stddef.h>
  31. #include <stdint.h>
  32. #ifdef __cplusplus
  33. extern "C" {
  34. #endif
  35. /**
  36. * \file gbm.h
  37. * \brief Generic Buffer Manager
  38. */
  39. struct gbm_device;
  40. struct gbm_bo;
  41. struct gbm_surface;
  42. /**
  43. * \mainpage The Generic Buffer Manager
  44. *
  45. * This module provides an abstraction that the caller can use to request a
  46. * buffer from the underlying memory management system for the platform.
  47. *
  48. * This allows the creation of portable code whilst still allowing access to
  49. * the underlying memory manager.
  50. */
  51. /**
  52. * Abstraction representing the handle to a buffer allocated by the
  53. * manager
  54. */
  55. union gbm_bo_handle {
  56. void *ptr;
  57. int32_t s32;
  58. uint32_t u32;
  59. int64_t s64;
  60. uint64_t u64;
  61. };
  62. /** Format of the allocated buffer */
  63. enum gbm_bo_format {
  64. /** RGB with 8 bits per channel in a 32 bit value */
  65. GBM_BO_FORMAT_XRGB8888,
  66. /** ARGB with 8 bits per channel in a 32 bit value */
  67. GBM_BO_FORMAT_ARGB8888
  68. };
  69. /**
  70. * The FourCC format codes are taken from the drm_fourcc.h definition, and
  71. * re-namespaced. New GBM formats must not be added, unless they are
  72. * identical ports from drm_fourcc.
  73. */
  74. #define __gbm_fourcc_code(a,b,c,d) ((uint32_t)(a) | ((uint32_t)(b) << 8) | \
  75. ((uint32_t)(c) << 16) | ((uint32_t)(d) << 24))
  76. #define GBM_FORMAT_BIG_ENDIAN (1<<31) /* format is big endian instead of little endian */
  77. /* color index */
  78. #define GBM_FORMAT_C8 __gbm_fourcc_code('C', '8', ' ', ' ') /* [7:0] C */
  79. /* 8 bpp Red */
  80. #define GBM_FORMAT_R8 __gbm_fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
  81. /* 16 bpp RG */
  82. #define GBM_FORMAT_GR88 __gbm_fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
  83. /* 8 bpp RGB */
  84. #define GBM_FORMAT_RGB332 __gbm_fourcc_code('R', 'G', 'B', '8') /* [7:0] R:G:B 3:3:2 */
  85. #define GBM_FORMAT_BGR233 __gbm_fourcc_code('B', 'G', 'R', '8') /* [7:0] B:G:R 2:3:3 */
  86. /* 16 bpp RGB */
  87. #define GBM_FORMAT_XRGB4444 __gbm_fourcc_code('X', 'R', '1', '2') /* [15:0] x:R:G:B 4:4:4:4 little endian */
  88. #define GBM_FORMAT_XBGR4444 __gbm_fourcc_code('X', 'B', '1', '2') /* [15:0] x:B:G:R 4:4:4:4 little endian */
  89. #define GBM_FORMAT_RGBX4444 __gbm_fourcc_code('R', 'X', '1', '2') /* [15:0] R:G:B:x 4:4:4:4 little endian */
  90. #define GBM_FORMAT_BGRX4444 __gbm_fourcc_code('B', 'X', '1', '2') /* [15:0] B:G:R:x 4:4:4:4 little endian */
  91. #define GBM_FORMAT_ARGB4444 __gbm_fourcc_code('A', 'R', '1', '2') /* [15:0] A:R:G:B 4:4:4:4 little endian */
  92. #define GBM_FORMAT_ABGR4444 __gbm_fourcc_code('A', 'B', '1', '2') /* [15:0] A:B:G:R 4:4:4:4 little endian */
  93. #define GBM_FORMAT_RGBA4444 __gbm_fourcc_code('R', 'A', '1', '2') /* [15:0] R:G:B:A 4:4:4:4 little endian */
  94. #define GBM_FORMAT_BGRA4444 __gbm_fourcc_code('B', 'A', '1', '2') /* [15:0] B:G:R:A 4:4:4:4 little endian */
  95. #define GBM_FORMAT_XRGB1555 __gbm_fourcc_code('X', 'R', '1', '5') /* [15:0] x:R:G:B 1:5:5:5 little endian */
  96. #define GBM_FORMAT_XBGR1555 __gbm_fourcc_code('X', 'B', '1', '5') /* [15:0] x:B:G:R 1:5:5:5 little endian */
  97. #define GBM_FORMAT_RGBX5551 __gbm_fourcc_code('R', 'X', '1', '5') /* [15:0] R:G:B:x 5:5:5:1 little endian */
  98. #define GBM_FORMAT_BGRX5551 __gbm_fourcc_code('B', 'X', '1', '5') /* [15:0] B:G:R:x 5:5:5:1 little endian */
  99. #define GBM_FORMAT_ARGB1555 __gbm_fourcc_code('A', 'R', '1', '5') /* [15:0] A:R:G:B 1:5:5:5 little endian */
  100. #define GBM_FORMAT_ABGR1555 __gbm_fourcc_code('A', 'B', '1', '5') /* [15:0] A:B:G:R 1:5:5:5 little endian */
  101. #define GBM_FORMAT_RGBA5551 __gbm_fourcc_code('R', 'A', '1', '5') /* [15:0] R:G:B:A 5:5:5:1 little endian */
  102. #define GBM_FORMAT_BGRA5551 __gbm_fourcc_code('B', 'A', '1', '5') /* [15:0] B:G:R:A 5:5:5:1 little endian */
  103. #define GBM_FORMAT_RGB565 __gbm_fourcc_code('R', 'G', '1', '6') /* [15:0] R:G:B 5:6:5 little endian */
  104. #define GBM_FORMAT_BGR565 __gbm_fourcc_code('B', 'G', '1', '6') /* [15:0] B:G:R 5:6:5 little endian */
  105. /* 24 bpp RGB */
  106. #define GBM_FORMAT_RGB888 __gbm_fourcc_code('R', 'G', '2', '4') /* [23:0] R:G:B little endian */
  107. #define GBM_FORMAT_BGR888 __gbm_fourcc_code('B', 'G', '2', '4') /* [23:0] B:G:R little endian */
  108. /* 32 bpp RGB */
  109. #define GBM_FORMAT_XRGB8888 __gbm_fourcc_code('X', 'R', '2', '4') /* [31:0] x:R:G:B 8:8:8:8 little endian */
  110. #define GBM_FORMAT_XBGR8888 __gbm_fourcc_code('X', 'B', '2', '4') /* [31:0] x:B:G:R 8:8:8:8 little endian */
  111. #define GBM_FORMAT_RGBX8888 __gbm_fourcc_code('R', 'X', '2', '4') /* [31:0] R:G:B:x 8:8:8:8 little endian */
  112. #define GBM_FORMAT_BGRX8888 __gbm_fourcc_code('B', 'X', '2', '4') /* [31:0] B:G:R:x 8:8:8:8 little endian */
  113. #define GBM_FORMAT_ARGB8888 __gbm_fourcc_code('A', 'R', '2', '4') /* [31:0] A:R:G:B 8:8:8:8 little endian */
  114. #define GBM_FORMAT_ABGR8888 __gbm_fourcc_code('A', 'B', '2', '4') /* [31:0] A:B:G:R 8:8:8:8 little endian */
  115. #define GBM_FORMAT_RGBA8888 __gbm_fourcc_code('R', 'A', '2', '4') /* [31:0] R:G:B:A 8:8:8:8 little endian */
  116. #define GBM_FORMAT_BGRA8888 __gbm_fourcc_code('B', 'A', '2', '4') /* [31:0] B:G:R:A 8:8:8:8 little endian */
  117. #define GBM_FORMAT_XRGB2101010 __gbm_fourcc_code('X', 'R', '3', '0') /* [31:0] x:R:G:B 2:10:10:10 little endian */
  118. #define GBM_FORMAT_XBGR2101010 __gbm_fourcc_code('X', 'B', '3', '0') /* [31:0] x:B:G:R 2:10:10:10 little endian */
  119. #define GBM_FORMAT_RGBX1010102 __gbm_fourcc_code('R', 'X', '3', '0') /* [31:0] R:G:B:x 10:10:10:2 little endian */
  120. #define GBM_FORMAT_BGRX1010102 __gbm_fourcc_code('B', 'X', '3', '0') /* [31:0] B:G:R:x 10:10:10:2 little endian */
  121. #define GBM_FORMAT_ARGB2101010 __gbm_fourcc_code('A', 'R', '3', '0') /* [31:0] A:R:G:B 2:10:10:10 little endian */
  122. #define GBM_FORMAT_ABGR2101010 __gbm_fourcc_code('A', 'B', '3', '0') /* [31:0] A:B:G:R 2:10:10:10 little endian */
  123. #define GBM_FORMAT_RGBA1010102 __gbm_fourcc_code('R', 'A', '3', '0') /* [31:0] R:G:B:A 10:10:10:2 little endian */
  124. #define GBM_FORMAT_BGRA1010102 __gbm_fourcc_code('B', 'A', '3', '0') /* [31:0] B:G:R:A 10:10:10:2 little endian */
  125. /*
  126. * Floating point 64bpp RGB
  127. * IEEE 754-2008 binary16 half-precision float
  128. * [15:0] sign:exponent:mantissa 1:5:10
  129. */
  130. #define GBM_FORMAT_XBGR16161616F __gbm_fourcc_code('X', 'B', '4', 'H') /* [63:0] x:B:G:R 16:16:16:16 little endian */
  131. #define GBM_FORMAT_ABGR16161616F __gbm_fourcc_code('A', 'B', '4', 'H') /* [63:0] A:B:G:R 16:16:16:16 little endian */
  132. /* packed YCbCr */
  133. #define GBM_FORMAT_YUYV __gbm_fourcc_code('Y', 'U', 'Y', 'V') /* [31:0] Cr0:Y1:Cb0:Y0 8:8:8:8 little endian */
  134. #define GBM_FORMAT_YVYU __gbm_fourcc_code('Y', 'V', 'Y', 'U') /* [31:0] Cb0:Y1:Cr0:Y0 8:8:8:8 little endian */
  135. #define GBM_FORMAT_UYVY __gbm_fourcc_code('U', 'Y', 'V', 'Y') /* [31:0] Y1:Cr0:Y0:Cb0 8:8:8:8 little endian */
  136. #define GBM_FORMAT_VYUY __gbm_fourcc_code('V', 'Y', 'U', 'Y') /* [31:0] Y1:Cb0:Y0:Cr0 8:8:8:8 little endian */
  137. #define GBM_FORMAT_AYUV __gbm_fourcc_code('A', 'Y', 'U', 'V') /* [31:0] A:Y:Cb:Cr 8:8:8:8 little endian */
  138. #define GBM_FORMAT_YVU444_PACK10_IMG __gbm_fourcc_code('I', 'M', 'G', '2') /* [31:0] unused:Y:Cr:Cb 2:10:10:10 little endian */
  139. /*
  140. * 2 plane YCbCr
  141. * index 0 = Y plane, [7:0] Y
  142. * index 1 = Cr:Cb plane, [15:0] Cr:Cb little endian
  143. * or
  144. * index 1 = Cb:Cr plane, [15:0] Cb:Cr little endian
  145. */
  146. #define GBM_FORMAT_NV12 __gbm_fourcc_code('N', 'V', '1', '2') /* 2x2 subsampled Cr:Cb plane */
  147. #define GBM_FORMAT_NV21 __gbm_fourcc_code('N', 'V', '2', '1') /* 2x2 subsampled Cb:Cr plane */
  148. #define GBM_FORMAT_NV16 __gbm_fourcc_code('N', 'V', '1', '6') /* 2x1 subsampled Cr:Cb plane */
  149. #define GBM_FORMAT_NV61 __gbm_fourcc_code('N', 'V', '6', '1') /* 2x1 subsampled Cb:Cr plane */
  150. /*
  151. * 3 plane YCbCr
  152. * index 0: Y plane, [7:0] Y
  153. * index 1: Cb plane, [7:0] Cb
  154. * index 2: Cr plane, [7:0] Cr
  155. * or
  156. * index 1: Cr plane, [7:0] Cr
  157. * index 2: Cb plane, [7:0] Cb
  158. */
  159. #define GBM_FORMAT_YUV410 __gbm_fourcc_code('Y', 'U', 'V', '9') /* 4x4 subsampled Cb (1) and Cr (2) planes */
  160. #define GBM_FORMAT_YVU410 __gbm_fourcc_code('Y', 'V', 'U', '9') /* 4x4 subsampled Cr (1) and Cb (2) planes */
  161. #define GBM_FORMAT_YUV411 __gbm_fourcc_code('Y', 'U', '1', '1') /* 4x1 subsampled Cb (1) and Cr (2) planes */
  162. #define GBM_FORMAT_YVU411 __gbm_fourcc_code('Y', 'V', '1', '1') /* 4x1 subsampled Cr (1) and Cb (2) planes */
  163. #define GBM_FORMAT_YUV420 __gbm_fourcc_code('Y', 'U', '1', '2') /* 2x2 subsampled Cb (1) and Cr (2) planes */
  164. #define GBM_FORMAT_YVU420 __gbm_fourcc_code('Y', 'V', '1', '2') /* 2x2 subsampled Cr (1) and Cb (2) planes */
  165. #define GBM_FORMAT_YUV422 __gbm_fourcc_code('Y', 'U', '1', '6') /* 2x1 subsampled Cb (1) and Cr (2) planes */
  166. #define GBM_FORMAT_YVU422 __gbm_fourcc_code('Y', 'V', '1', '6') /* 2x1 subsampled Cr (1) and Cb (2) planes */
  167. #define GBM_FORMAT_YUV444 __gbm_fourcc_code('Y', 'U', '2', '4') /* non-subsampled Cb (1) and Cr (2) planes */
  168. #define GBM_FORMAT_YVU444 __gbm_fourcc_code('Y', 'V', '2', '4') /* non-subsampled Cr (1) and Cb (2) planes */
  169. struct gbm_format_name_desc {
  170. char name[5];
  171. };
  172. /**
  173. * Flags to indicate the intended use for the buffer - these are passed into
  174. * gbm_bo_create(). The caller must set the union of all the flags that are
  175. * appropriate
  176. *
  177. * \sa Use gbm_device_is_format_supported() to check if the combination of format
  178. * and use flags are supported
  179. */
  180. enum gbm_bo_flags {
  181. /**
  182. * Buffer is going to be presented to the screen using an API such as KMS
  183. */
  184. GBM_BO_USE_SCANOUT = (1 << 0),
  185. /**
  186. * Buffer is going to be used as cursor
  187. */
  188. GBM_BO_USE_CURSOR = (1 << 1),
  189. /**
  190. * Deprecated
  191. */
  192. GBM_BO_USE_CURSOR_64X64 = GBM_BO_USE_CURSOR,
  193. /**
  194. * Buffer is to be used for rendering - for example it is going to be used
  195. * as the storage for a color buffer
  196. */
  197. GBM_BO_USE_RENDERING = (1 << 2),
  198. /**
  199. * Buffer can be used for gbm_bo_write. This is guaranteed to work
  200. * with GBM_BO_USE_CURSOR, but may not work for other combinations.
  201. */
  202. GBM_BO_USE_WRITE = (1 << 3),
  203. /**
  204. * Buffer is linear, i.e. not tiled.
  205. */
  206. GBM_BO_USE_LINEAR = (1 << 4),
  207. /**
  208. * Buffer is protected, i.e. encrypted and not readable by CPU or any
  209. * other non-secure / non-trusted components nor by non-trusted OpenGL,
  210. * OpenCL, and Vulkan applications.
  211. */
  212. GBM_BO_USE_PROTECTED = (1 << 5),
  213. };
  214. /**
  215. * Flags to control the behaviour of a blit - these are passed to
  216. * gbm_bo_blit().
  217. */
  218. enum gbm_blit_flags {
  219. /**
  220. * Force blit execution in finite time
  221. */
  222. GBM_BLIT_FLAG_FLUSH = 0x0001,
  223. /**
  224. * Flush, and wait for the blit to complete
  225. */
  226. GBM_BLIT_FLAG_FINISH = 0x0002
  227. };
  228. int
  229. gbm_device_get_fd(struct gbm_device *gbm);
  230. const char *
  231. gbm_device_get_backend_name(struct gbm_device *gbm);
  232. int
  233. gbm_device_is_format_supported(struct gbm_device *gbm,
  234. uint32_t format, uint32_t usage);
  235. int
  236. gbm_device_get_format_modifier_plane_count(struct gbm_device *gbm,
  237. uint32_t format,
  238. uint64_t modifier);
  239. void
  240. gbm_device_destroy(struct gbm_device *gbm);
  241. struct gbm_device *
  242. gbm_create_device(int fd);
  243. struct gbm_bo *
  244. gbm_bo_create(struct gbm_device *gbm,
  245. uint32_t width, uint32_t height,
  246. uint32_t format, uint32_t flags);
  247. struct gbm_bo *
  248. gbm_bo_create_with_modifiers(struct gbm_device *gbm,
  249. uint32_t width, uint32_t height,
  250. uint32_t format,
  251. const uint64_t *modifiers,
  252. const unsigned int count);
  253. #define GBM_BO_IMPORT_WL_BUFFER 0x5501
  254. #define GBM_BO_IMPORT_EGL_IMAGE 0x5502
  255. #define GBM_BO_IMPORT_FD 0x5503
  256. #define GBM_BO_IMPORT_FD_MODIFIER 0x5504
  257. struct gbm_import_fd_data {
  258. int fd;
  259. uint32_t width;
  260. uint32_t height;
  261. uint32_t stride;
  262. uint32_t format;
  263. };
  264. #define GBM_MAX_PLANES 4
  265. struct gbm_import_fd_modifier_data {
  266. uint32_t width;
  267. uint32_t height;
  268. uint32_t format;
  269. uint32_t num_fds;
  270. int fds[GBM_MAX_PLANES];
  271. int strides[GBM_MAX_PLANES];
  272. int offsets[GBM_MAX_PLANES];
  273. uint64_t modifier;
  274. };
  275. struct gbm_bo *
  276. gbm_bo_import(struct gbm_device *gbm, uint32_t type,
  277. void *buffer, uint32_t usage);
  278. /**
  279. * Flags to indicate the type of mapping for the buffer - these are
  280. * passed into gbm_bo_map(). The caller must set the union of all the
  281. * flags that are appropriate.
  282. *
  283. * These flags are independent of the GBM_BO_USE_* creation flags. However,
  284. * mapping the buffer may require copying to/from a staging buffer.
  285. *
  286. * See also: pipe_map_flags
  287. */
  288. enum gbm_bo_transfer_flags {
  289. /**
  290. * Buffer contents read back (or accessed directly) at transfer
  291. * create time.
  292. */
  293. GBM_BO_TRANSFER_READ = (1 << 0),
  294. /**
  295. * Buffer contents will be written back at unmap time
  296. * (or modified as a result of being accessed directly).
  297. */
  298. GBM_BO_TRANSFER_WRITE = (1 << 1),
  299. /**
  300. * Read/modify/write
  301. */
  302. GBM_BO_TRANSFER_READ_WRITE = (GBM_BO_TRANSFER_READ | GBM_BO_TRANSFER_WRITE),
  303. };
  304. void *
  305. gbm_bo_map(struct gbm_bo *bo,
  306. uint32_t x, uint32_t y, uint32_t width, uint32_t height,
  307. uint32_t flags, uint32_t *stride, void **map_data);
  308. void
  309. gbm_bo_unmap(struct gbm_bo *bo, void *map_data);
  310. uint32_t
  311. gbm_bo_get_width(struct gbm_bo *bo);
  312. uint32_t
  313. gbm_bo_get_height(struct gbm_bo *bo);
  314. uint32_t
  315. gbm_bo_get_stride(struct gbm_bo *bo);
  316. uint32_t
  317. gbm_bo_get_stride_for_plane(struct gbm_bo *bo, int plane);
  318. uint32_t
  319. gbm_bo_get_format(struct gbm_bo *bo);
  320. uint32_t
  321. gbm_bo_get_bpp(struct gbm_bo *bo);
  322. uint32_t
  323. gbm_bo_get_offset(struct gbm_bo *bo, int plane);
  324. struct gbm_device *
  325. gbm_bo_get_device(struct gbm_bo *bo);
  326. union gbm_bo_handle
  327. gbm_bo_get_handle(struct gbm_bo *bo);
  328. int
  329. gbm_bo_get_fd(struct gbm_bo *bo);
  330. uint64_t
  331. gbm_bo_get_modifier(struct gbm_bo *bo);
  332. int
  333. gbm_bo_get_plane_count(struct gbm_bo *bo);
  334. union gbm_bo_handle
  335. gbm_bo_get_handle_for_plane(struct gbm_bo *bo, int plane);
  336. int
  337. gbm_bo_write(struct gbm_bo *bo, const void *buf, size_t count);
  338. void
  339. gbm_bo_set_user_data(struct gbm_bo *bo, void *data,
  340. void (*destroy_user_data)(struct gbm_bo *, void *));
  341. void *
  342. gbm_bo_get_user_data(struct gbm_bo *bo);
  343. void
  344. gbm_bo_destroy(struct gbm_bo *bo);
  345. struct gbm_surface *
  346. gbm_surface_create(struct gbm_device *gbm,
  347. uint32_t width, uint32_t height,
  348. uint32_t format, uint32_t flags);
  349. struct gbm_surface *
  350. gbm_surface_create_with_modifiers(struct gbm_device *gbm,
  351. uint32_t width, uint32_t height,
  352. uint32_t format,
  353. const uint64_t *modifiers,
  354. const unsigned int count);
  355. struct gbm_bo *
  356. gbm_surface_lock_front_buffer(struct gbm_surface *surface);
  357. void
  358. gbm_surface_release_buffer(struct gbm_surface *surface, struct gbm_bo *bo);
  359. int
  360. gbm_surface_has_free_buffers(struct gbm_surface *surface);
  361. void
  362. gbm_surface_destroy(struct gbm_surface *surface);
  363. char *
  364. gbm_format_get_name(uint32_t gbm_format, struct gbm_format_name_desc *desc);
  365. int
  366. gbm_bo_blit(struct gbm_bo *dst_bo, struct gbm_bo *src_bo,
  367. int dst_x0, int dst_y0, int dst_width, int dst_height,
  368. int src_x0, int src_y0, int src_width, int src_height,
  369. enum gbm_blit_flags flags);
  370. #ifdef __cplusplus
  371. }
  372. #endif
  373. #endif