1 /* 2 * Copyright (C) 2010-2011 Chia-I Wu <olvaffe (at) 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 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 case HAL_PIXEL_FORMAT_YCbCr_420_888: 70 bpp = 1; 71 break; 72 default: 73 bpp = 0; 74 break; 75 } 76 77 return bpp; 78 } 79 80 static inline void gralloc_drm_align_geometry(int format, int *width, int *height) 81 { 82 int align_w = 1, align_h = 1, extra_height_div = 0; 83 84 switch (format) { 85 case HAL_PIXEL_FORMAT_YV12: 86 align_w = 32; 87 align_h = 2; 88 extra_height_div = 2; 89 break; 90 case HAL_PIXEL_FORMAT_YCbCr_422_SP: 91 align_w = 2; 92 extra_height_div = 1; 93 break; 94 case HAL_PIXEL_FORMAT_YCrCb_420_SP: 95 case HAL_PIXEL_FORMAT_YCbCr_420_888: 96 align_w = 2; 97 align_h = 2; 98 extra_height_div = 2; 99 break; 100 case HAL_PIXEL_FORMAT_YCbCr_422_I: 101 align_w = 2; 102 break; 103 } 104 105 *width = ALIGN(*width, align_w); 106 *height = ALIGN(*height, align_h); 107 108 if (extra_height_div) 109 *height += *height / extra_height_div; 110 } 111 112 int gralloc_drm_handle_register(buffer_handle_t handle, struct gralloc_drm_t *drm); 113 int gralloc_drm_handle_unregister(buffer_handle_t handle); 114 115 struct gralloc_drm_bo_t *gralloc_drm_bo_create(struct gralloc_drm_t *drm, int width, int height, int format, int usage); 116 void gralloc_drm_bo_decref(struct gralloc_drm_bo_t *bo); 117 118 struct gralloc_drm_bo_t *gralloc_drm_bo_from_handle(buffer_handle_t handle); 119 buffer_handle_t gralloc_drm_bo_get_handle(struct gralloc_drm_bo_t *bo, int *stride); 120 int gralloc_drm_get_gem_handle(buffer_handle_t handle); 121 void gralloc_drm_resolve_format(buffer_handle_t _handle, uint32_t *pitches, uint32_t *offsets, uint32_t *handles); 122 unsigned int planes_for_format(struct gralloc_drm_t *drm, int hal_format); 123 124 int gralloc_drm_bo_lock(struct gralloc_drm_bo_t *bo, int x, int y, int w, int h, int enable_write, void **addr); 125 void gralloc_drm_bo_unlock(struct gralloc_drm_bo_t *bo); 126 127 #ifdef __cplusplus 128 } 129 #endif 130 #endif /* _GRALLOC_DRM_H_ */ 131