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 (at) googlemail.com> 26 */ 27 28 #ifndef INTERNAL_H_ 29 #define INTERNAL_H_ 30 31 #include "gbm.h" 32 #include <sys/stat.h> 33 34 /* GCC visibility */ 35 #if defined(__GNUC__) 36 #define GBM_EXPORT __attribute__ ((visibility("default"))) 37 #else 38 #define GBM_EXPORT 39 #endif 40 41 /** 42 * \file gbmint.h 43 * \brief Internal implementation details of gbm 44 */ 45 46 /** 47 * The device used for the memory allocation. 48 * 49 * The members of this structure should be not accessed directly 50 */ 51 struct gbm_device { 52 /* Hack to make a gbm_device detectable by its first element. */ 53 struct gbm_device *(*dummy)(int); 54 55 int fd; 56 const char *name; 57 unsigned int refcount; 58 struct stat stat; 59 60 void (*destroy)(struct gbm_device *gbm); 61 int (*is_format_supported)(struct gbm_device *gbm, 62 uint32_t format, 63 uint32_t usage); 64 65 struct gbm_bo *(*bo_create)(struct gbm_device *gbm, 66 uint32_t width, uint32_t height, 67 uint32_t format, 68 uint32_t usage); 69 struct gbm_bo *(*bo_import)(struct gbm_device *gbm, uint32_t type, 70 void *buffer, uint32_t usage); 71 void *(*bo_map)(struct gbm_bo *bo, 72 uint32_t x, uint32_t y, 73 uint32_t width, uint32_t height, 74 uint32_t flags, uint32_t *stride, 75 void **map_data); 76 void (*bo_unmap)(struct gbm_bo *bo, void *map_data); 77 int (*bo_write)(struct gbm_bo *bo, const void *buf, size_t data); 78 int (*bo_get_fd)(struct gbm_bo *bo); 79 void (*bo_destroy)(struct gbm_bo *bo); 80 81 struct gbm_surface *(*surface_create)(struct gbm_device *gbm, 82 uint32_t width, uint32_t height, 83 uint32_t format, uint32_t flags); 84 struct gbm_bo *(*surface_lock_front_buffer)(struct gbm_surface *surface); 85 void (*surface_release_buffer)(struct gbm_surface *surface, 86 struct gbm_bo *bo); 87 int (*surface_has_free_buffers)(struct gbm_surface *surface); 88 void (*surface_destroy)(struct gbm_surface *surface); 89 }; 90 91 /** 92 * The allocated buffer object. 93 * 94 * The members in this structure should not be accessed directly. 95 */ 96 struct gbm_bo { 97 struct gbm_device *gbm; 98 uint32_t width; 99 uint32_t height; 100 uint32_t stride; 101 uint32_t format; 102 union gbm_bo_handle handle; 103 void *user_data; 104 void (*destroy_user_data)(struct gbm_bo *, void *); 105 }; 106 107 struct gbm_surface { 108 struct gbm_device *gbm; 109 uint32_t width; 110 uint32_t height; 111 uint32_t format; 112 uint32_t flags; 113 }; 114 115 struct gbm_backend { 116 const char *backend_name; 117 struct gbm_device *(*create_device)(int fd); 118 }; 119 120 #endif 121
