1 /*
2 * Copyright (C) 2010-2011 Chia-I Wu <olvaffe@gmail.com>
3 * Copyright (C) 2010-2011 LunarG Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included
13 * in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 */
23
24 #ifndef _GRALLOC_DRM_HANDLE_H_
25 #define _GRALLOC_DRM_HANDLE_H_
26
27 #include <cutils/native_handle.h>
28 #include <system/graphics.h>
29
30 #ifdef __cplusplus
31 extern "C" {
32 #endif
33
34 struct gralloc_drm_bo_t;
35
36 struct gralloc_drm_handle_t {
37 native_handle_t base;
38
39 /* file descriptors */
40 int prime_fd;
41
42 /* integers */
43 int magic;
44
45 int width;
46 int height;
47 int format;
48 int usage;
49
50 int name; /* the name of the bo */
51 int stride; /* the stride in bytes */
52
53 struct gralloc_drm_bo_t *data; /* pointer to struct gralloc_drm_bo_t */
54
55 // FIXME: the attributes below should be out-of-line
56 uint64_t unknown __attribute__((aligned(8)));
57 int data_owner; /* owner of data (for validation) */
58 };
59 #define GRALLOC_DRM_HANDLE_MAGIC 0x12345678
60 #define GRALLOC_DRM_HANDLE_NUM_FDS 1
61 #define GRALLOC_DRM_HANDLE_NUM_INTS ( \
62 ((sizeof(struct gralloc_drm_handle_t) - sizeof(native_handle_t))/sizeof(int)) \
63 - GRALLOC_DRM_HANDLE_NUM_FDS)
64
gralloc_drm_handle(buffer_handle_t _handle)65 static inline struct gralloc_drm_handle_t *gralloc_drm_handle(buffer_handle_t _handle)
66 {
67 struct gralloc_drm_handle_t *handle =
68 (struct gralloc_drm_handle_t *) _handle;
69
70 if (handle && (handle->base.version != sizeof(handle->base) ||
71 handle->base.numInts != GRALLOC_DRM_HANDLE_NUM_INTS ||
72 handle->base.numFds != GRALLOC_DRM_HANDLE_NUM_FDS ||
73 handle->magic != GRALLOC_DRM_HANDLE_MAGIC)) {
74 ALOGE("invalid handle: version=%d, numInts=%d, numFds=%d, magic=%x",
75 handle->base.version, handle->base.numInts,
76 handle->base.numFds, handle->magic);
77 handle = NULL;
78 }
79
80 return handle;
81 }
82
83 #ifdef __cplusplus
84 }
85 #endif
86 #endif /* _GRALLOC_DRM_HANDLE_H_ */
87