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
37extern "C" {
38#endif
39
40
41/**
42 * \file gbm.h
43 * \brief Generic Buffer Manager
44 */
45
46struct gbm_device;
47struct gbm_bo;
48struct 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 */
64union 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 */
73enum 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/* packed YCbCr */
154#define GBM_FORMAT_YUYV __gbm_fourcc_code('Y', 'U', 'Y', 'V') /* [31:0] Cr0:Y1:Cb0:Y0 8:8:8:8 little endian */
155#define GBM_FORMAT_YVYU __gbm_fourcc_code('Y', 'V', 'Y', 'U') /* [31:0] Cb0:Y1:Cr0:Y0 8:8:8:8 little endian */
156#define GBM_FORMAT_UYVY __gbm_fourcc_code('U', 'Y', 'V', 'Y') /* [31:0] Y1:Cr0:Y0:Cb0 8:8:8:8 little endian */
157#define GBM_FORMAT_VYUY __gbm_fourcc_code('V', 'Y', 'U', 'Y') /* [31:0] Y1:Cb0:Y0:Cr0 8:8:8:8 little endian */
158
159#define GBM_FORMAT_AYUV __gbm_fourcc_code('A', 'Y', 'U', 'V') /* [31:0] A:Y:Cb:Cr 8:8:8:8 little endian */
160
161/*
162 * 2 plane YCbCr
163 * index 0 = Y plane, [7:0] Y
164 * index 1 = Cr:Cb plane, [15:0] Cr:Cb little endian
165 * or
166 * index 1 = Cb:Cr plane, [15:0] Cb:Cr little endian
167 */
168#define GBM_FORMAT_NV12 __gbm_fourcc_code('N', 'V', '1', '2') /* 2x2 subsampled Cr:Cb plane */
169#define GBM_FORMAT_NV21 __gbm_fourcc_code('N', 'V', '2', '1') /* 2x2 subsampled Cb:Cr plane */
170#define GBM_FORMAT_NV16 __gbm_fourcc_code('N', 'V', '1', '6') /* 2x1 subsampled Cr:Cb plane */
171#define GBM_FORMAT_NV61 __gbm_fourcc_code('N', 'V', '6', '1') /* 2x1 subsampled Cb:Cr plane */
172
173/*
174 * 3 plane YCbCr
175 * index 0: Y plane, [7:0] Y
176 * index 1: Cb plane, [7:0] Cb
177 * index 2: Cr plane, [7:0] Cr
178 * or
179 * index 1: Cr plane, [7:0] Cr
180 * index 2: Cb plane, [7:0] Cb
181 */
182#define GBM_FORMAT_YUV410 __gbm_fourcc_code('Y', 'U', 'V', '9') /* 4x4 subsampled Cb (1) and Cr (2) planes */
183#define GBM_FORMAT_YVU410 __gbm_fourcc_code('Y', 'V', 'U', '9') /* 4x4 subsampled Cr (1) and Cb (2) planes */
184#define GBM_FORMAT_YUV411 __gbm_fourcc_code('Y', 'U', '1', '1') /* 4x1 subsampled Cb (1) and Cr (2) planes */
185#define GBM_FORMAT_YVU411 __gbm_fourcc_code('Y', 'V', '1', '1') /* 4x1 subsampled Cr (1) and Cb (2) planes */
186#define GBM_FORMAT_YUV420 __gbm_fourcc_code('Y', 'U', '1', '2') /* 2x2 subsampled Cb (1) and Cr (2) planes */
187#define GBM_FORMAT_YVU420 __gbm_fourcc_code('Y', 'V', '1', '2') /* 2x2 subsampled Cr (1) and Cb (2) planes */
188#define GBM_FORMAT_YUV422 __gbm_fourcc_code('Y', 'U', '1', '6') /* 2x1 subsampled Cb (1) and Cr (2) planes */
189#define GBM_FORMAT_YVU422 __gbm_fourcc_code('Y', 'V', '1', '6') /* 2x1 subsampled Cr (1) and Cb (2) planes */
190#define GBM_FORMAT_YUV444 __gbm_fourcc_code('Y', 'U', '2', '4') /* non-subsampled Cb (1) and Cr (2) planes */
191#define GBM_FORMAT_YVU444 __gbm_fourcc_code('Y', 'V', '2', '4') /* non-subsampled Cr (1) and Cb (2) planes */
192
193struct gbm_format_name_desc {
194 char name[5];
195};
196
197/**
198 * Flags to indicate the intended use for the buffer - these are passed into
199 * gbm_bo_create(). The caller must set the union of all the flags that are
200 * appropriate
201 *
202 * \sa Use gbm_device_is_format_supported() to check if the combination of format
203 * and use flags are supported
204 */
205enum gbm_bo_flags {
206 /**
207 * Buffer is going to be presented to the screen using an API such as KMS
208 */
209 GBM_BO_USE_SCANOUT = (1 << 0),
210 /**
211 * Buffer is going to be used as cursor
212 */
213 GBM_BO_USE_CURSOR = (1 << 1),
214 /**
215 * Deprecated
216 */
217 GBM_BO_USE_CURSOR_64X64 = GBM_BO_USE_CURSOR,
218 /**
219 * Buffer is to be used for rendering - for example it is going to be used
220 * as the storage for a color buffer
221 */
222 GBM_BO_USE_RENDERING = (1 << 2),
223 /**
224 * Buffer can be used for gbm_bo_write. This is guaranteed to work
225 * with GBM_BO_USE_CURSOR, but may not work for other combinations.
226 */
227 GBM_BO_USE_WRITE = (1 << 3),
228 /**
229 * Buffer is linear, i.e. not tiled.
230 */
231 GBM_BO_USE_LINEAR = (1 << 4),
232};
233
234int
235gbm_device_get_fd(struct gbm_device *gbm);
236
237const char *
238gbm_device_get_backend_name(struct gbm_device *gbm);
239
240int
241gbm_device_is_format_supported(struct gbm_device *gbm,
242 uint32_t format, uint32_t usage);
243
244int
245gbm_device_get_format_modifier_plane_count(struct gbm_device *gbm,
246 uint32_t format,
247 uint64_t modifier);
248
249void
250gbm_device_destroy(struct gbm_device *gbm);
251
252struct gbm_device *
253gbm_create_device(int fd);
254
255struct gbm_bo *
256gbm_bo_create(struct gbm_device *gbm,
257 uint32_t width, uint32_t height,
258 uint32_t format, uint32_t flags);
259
260struct gbm_bo *
261gbm_bo_create_with_modifiers(struct gbm_device *gbm,
262 uint32_t width, uint32_t height,
263 uint32_t format,
264 const uint64_t *modifiers,
265 const unsigned int count);
266#define GBM_BO_IMPORT_WL_BUFFER 0x5501
267#define GBM_BO_IMPORT_EGL_IMAGE 0x5502
268#define GBM_BO_IMPORT_FD 0x5503
269#define GBM_BO_IMPORT_FD_MODIFIER 0x5504
270
271struct gbm_import_fd_data {
272 int fd;
273 uint32_t width;
274 uint32_t height;
275 uint32_t stride;
276 uint32_t format;
277};
278
279struct gbm_import_fd_modifier_data {
280 uint32_t width;
281 uint32_t height;
282 uint32_t format;
283 uint32_t num_fds;
284 int fds[4];
285 int strides[4];
286 int offsets[4];
287 uint64_t modifier;
288};
289
290struct gbm_bo *
291gbm_bo_import(struct gbm_device *gbm, uint32_t type,
292 void *buffer, uint32_t usage);
293
294/**
295 * Flags to indicate the type of mapping for the buffer - these are
296 * passed into gbm_bo_map(). The caller must set the union of all the
297 * flags that are appropriate.
298 *
299 * These flags are independent of the GBM_BO_USE_* creation flags. However,
300 * mapping the buffer may require copying to/from a staging buffer.
301 *
302 * See also: pipe_transfer_usage
303 */
304enum gbm_bo_transfer_flags {
305 /**
306 * Buffer contents read back (or accessed directly) at transfer
307 * create time.
308 */
309 GBM_BO_TRANSFER_READ = (1 << 0),
310 /**
311 * Buffer contents will be written back at unmap time
312 * (or modified as a result of being accessed directly).
313 */
314 GBM_BO_TRANSFER_WRITE = (1 << 1),
315 /**
316 * Read/modify/write
317 */
318 GBM_BO_TRANSFER_READ_WRITE = (GBM_BO_TRANSFER_READ | GBM_BO_TRANSFER_WRITE),
319};
320
321void *
322gbm_bo_map(struct gbm_bo *bo,
323 uint32_t x, uint32_t y, uint32_t width, uint32_t height,
324 uint32_t flags, uint32_t *stride, void **map_data);
325
326void
327gbm_bo_unmap(struct gbm_bo *bo, void *map_data);
328
329uint32_t
330gbm_bo_get_width(struct gbm_bo *bo);
331
332uint32_t
333gbm_bo_get_height(struct gbm_bo *bo);
334
335uint32_t
336gbm_bo_get_stride(struct gbm_bo *bo);
337
338uint32_t
339gbm_bo_get_stride_for_plane(struct gbm_bo *bo, int plane);
340
341uint32_t
342gbm_bo_get_format(struct gbm_bo *bo);
343
344uint32_t
345gbm_bo_get_bpp(struct gbm_bo *bo);
346
347uint32_t
348gbm_bo_get_offset(struct gbm_bo *bo, int plane);
349
350struct gbm_device *
351gbm_bo_get_device(struct gbm_bo *bo);
352
353union gbm_bo_handle
354gbm_bo_get_handle(struct gbm_bo *bo);
355
356int
357gbm_bo_get_fd(struct gbm_bo *bo);
358
359uint64_t
360gbm_bo_get_modifier(struct gbm_bo *bo);
361
362int
363gbm_bo_get_plane_count(struct gbm_bo *bo);
364
365union gbm_bo_handle
366gbm_bo_get_handle_for_plane(struct gbm_bo *bo, int plane);
367
368int
369gbm_bo_write(struct gbm_bo *bo, const void *buf, size_t count);
370
371void
372gbm_bo_set_user_data(struct gbm_bo *bo, void *data,
373 void (*destroy_user_data)(struct gbm_bo *, void *));
374
375void *
376gbm_bo_get_user_data(struct gbm_bo *bo);
377
378void
379gbm_bo_destroy(struct gbm_bo *bo);
380
381struct gbm_surface *
382gbm_surface_create(struct gbm_device *gbm,
383 uint32_t width, uint32_t height,
384 uint32_t format, uint32_t flags);
385
386struct gbm_surface *
387gbm_surface_create_with_modifiers(struct gbm_device *gbm,
388 uint32_t width, uint32_t height,
389 uint32_t format,
390 const uint64_t *modifiers,
391 const unsigned int count);
392
393struct gbm_bo *
394gbm_surface_lock_front_buffer(struct gbm_surface *surface);
395
396void
397gbm_surface_release_buffer(struct gbm_surface *surface, struct gbm_bo *bo);
398
399int
400gbm_surface_has_free_buffers(struct gbm_surface *surface);
401
402void
403gbm_surface_destroy(struct gbm_surface *surface);
404
405char *
406gbm_format_get_name(uint32_t gbm_format, struct gbm_format_name_desc *desc);
407
408#ifdef __cplusplus
409}
410#endif
411
412#endif
413