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
31extern "C" {
32#endif
33
34#define ALIGN(val, align) (((val) + (align) - 1) & ~((align) - 1))
35
36struct gralloc_drm_t;
37struct gralloc_drm_bo_t;
38
39enum {
40	GRALLOC_MODULE_PERFORM_GET_DRM_FD                = 0x80000002,
41};
42
43struct gralloc_drm_t *gralloc_drm_create(void);
44void gralloc_drm_destroy(struct gralloc_drm_t *drm);
45
46int gralloc_drm_get_fd(struct gralloc_drm_t *drm);
47
48static 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
79static 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
110int gralloc_drm_handle_register(buffer_handle_t handle, struct gralloc_drm_t *drm);
111int gralloc_drm_handle_unregister(buffer_handle_t handle);
112
113struct gralloc_drm_bo_t *gralloc_drm_bo_create(struct gralloc_drm_t *drm, int width, int height, int format, int usage);
114void gralloc_drm_bo_decref(struct gralloc_drm_bo_t *bo);
115
116struct gralloc_drm_bo_t *gralloc_drm_bo_from_handle(buffer_handle_t handle);
117buffer_handle_t gralloc_drm_bo_get_handle(struct gralloc_drm_bo_t *bo, int *stride);
118int gralloc_drm_get_gem_handle(buffer_handle_t handle);
119void gralloc_drm_resolve_format(buffer_handle_t _handle, uint32_t *pitches, uint32_t *offsets, uint32_t *handles);
120unsigned int planes_for_format(struct gralloc_drm_t *drm, int hal_format);
121
122int gralloc_drm_bo_lock(struct gralloc_drm_bo_t *bo, int x, int y, int w, int h, int enable_write, void **addr);
123void gralloc_drm_bo_unlock(struct gralloc_drm_bo_t *bo);
124
125#ifdef __cplusplus
126}
127#endif
128#endif /* _GRALLOC_DRM_H_ */
129