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_H_
25 #define _GRALLOC_DRM_H_
26
27 #include <hardware/gralloc.h>
28 #include <system/graphics.h>
29
30 #ifdef __cplusplus
31 extern "C" {
32 #endif
33
34 #define ALIGN(val, align) (((val) + (align) - 1) & ~((align) - 1))
35
36 struct gralloc_drm_t;
37 struct gralloc_drm_bo_t;
38
39 enum {
40 GRALLOC_MODULE_PERFORM_GET_DRM_FD = 0x80000002,
41 };
42
43 struct gralloc_drm_t *gralloc_drm_create(void);
44 void gralloc_drm_destroy(struct gralloc_drm_t *drm);
45
46 int gralloc_drm_get_fd(struct gralloc_drm_t *drm);
47
gralloc_drm_get_bpp(int format)48 static inline int gralloc_drm_get_bpp(int format)
49 {
50 int bpp;
51
52 switch (format) {
53 case HAL_PIXEL_FORMAT_RGBA_8888:
54 case HAL_PIXEL_FORMAT_RGBX_8888:
55 case HAL_PIXEL_FORMAT_BGRA_8888:
56 bpp = 4;
57 break;
58 case HAL_PIXEL_FORMAT_RGB_888:
59 bpp = 3;
60 break;
61 case HAL_PIXEL_FORMAT_RGB_565:
62 case HAL_PIXEL_FORMAT_YCbCr_422_I:
63 bpp = 2;
64 break;
65 /* planar; only Y is considered */
66 case HAL_PIXEL_FORMAT_YV12:
67 case HAL_PIXEL_FORMAT_YCbCr_422_SP:
68 case HAL_PIXEL_FORMAT_YCrCb_420_SP:
69 bpp = 1;
70 break;
71 default:
72 bpp = 0;
73 break;
74 }
75
76 return bpp;
77 }
78
gralloc_drm_align_geometry(int format,int * width,int * height)79 static inline void gralloc_drm_align_geometry(int format, int *width, int *height)
80 {
81 int align_w = 1, align_h = 1, extra_height_div = 0;
82
83 switch (format) {
84 case HAL_PIXEL_FORMAT_YV12:
85 align_w = 32;
86 align_h = 2;
87 extra_height_div = 2;
88 break;
89 case HAL_PIXEL_FORMAT_YCbCr_422_SP:
90 align_w = 2;
91 extra_height_div = 1;
92 break;
93 case HAL_PIXEL_FORMAT_YCrCb_420_SP:
94 align_w = 2;
95 align_h = 2;
96 extra_height_div = 2;
97 break;
98 case HAL_PIXEL_FORMAT_YCbCr_422_I:
99 align_w = 2;
100 break;
101 }
102
103 *width = ALIGN(*width, align_w);
104 *height = ALIGN(*height, align_h);
105
106 if (extra_height_div)
107 *height += *height / extra_height_div;
108 }
109
110 int gralloc_drm_handle_register(buffer_handle_t handle, struct gralloc_drm_t *drm);
111 int gralloc_drm_handle_unregister(buffer_handle_t handle);
112
113 struct gralloc_drm_bo_t *gralloc_drm_bo_create(struct gralloc_drm_t *drm, int width, int height, int format, int usage);
114 void gralloc_drm_bo_decref(struct gralloc_drm_bo_t *bo);
115
116 struct gralloc_drm_bo_t *gralloc_drm_bo_from_handle(buffer_handle_t handle);
117 buffer_handle_t gralloc_drm_bo_get_handle(struct gralloc_drm_bo_t *bo, int *stride);
118 int gralloc_drm_get_gem_handle(buffer_handle_t handle);
119 void gralloc_drm_resolve_format(buffer_handle_t _handle, uint32_t *pitches, uint32_t *offsets, uint32_t *handles);
120 unsigned int planes_for_format(struct gralloc_drm_t *drm, int hal_format);
121
122 int gralloc_drm_bo_lock(struct gralloc_drm_bo_t *bo, int x, int y, int w, int h, int enable_write, void **addr);
123 void gralloc_drm_bo_unlock(struct gralloc_drm_bo_t *bo);
124
125 #ifdef __cplusplus
126 }
127 #endif
128 #endif /* _GRALLOC_DRM_H_ */
129