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_HANDLE_H_ 25 #define _GRALLOC_DRM_HANDLE_H_ 26 27 #include <cutils/log.h> 28 #include <cutils/native_handle.h> 29 #include <system/graphics.h> 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 struct gralloc_drm_bo_t; 36 37 struct gralloc_drm_handle_t { 38 native_handle_t base; 39 40 /* file descriptors */ 41 int prime_fd; 42 43 /* integers */ 44 int magic; 45 46 int width; 47 int height; 48 int format; 49 int usage; 50 51 int name; /* the name of the bo */ 52 int stride; /* the stride in bytes */ 53 54 struct gralloc_drm_bo_t *data; /* pointer to struct gralloc_drm_bo_t */ 55 56 // FIXME: the attributes below should be out-of-line 57 uint64_t unknown __attribute__((aligned(8))); 58 int data_owner; /* owner of data (for validation) */ 59 }; 60 #define GRALLOC_DRM_HANDLE_MAGIC 0x12345678 61 #define GRALLOC_DRM_HANDLE_NUM_FDS 1 62 #define GRALLOC_DRM_HANDLE_NUM_INTS ( \ 63 ((sizeof(struct gralloc_drm_handle_t) - sizeof(native_handle_t))/sizeof(int)) \ 64 - GRALLOC_DRM_HANDLE_NUM_FDS) 65 66 static inline struct gralloc_drm_handle_t *gralloc_drm_handle(buffer_handle_t _handle) 67 { 68 struct gralloc_drm_handle_t *handle = 69 (struct gralloc_drm_handle_t *) _handle; 70 71 if (handle && (handle->base.version != sizeof(handle->base) || 72 handle->base.numInts != GRALLOC_DRM_HANDLE_NUM_INTS || 73 handle->base.numFds != GRALLOC_DRM_HANDLE_NUM_FDS || 74 handle->magic != GRALLOC_DRM_HANDLE_MAGIC)) { 75 ALOGE("invalid handle: version=%d, numInts=%d, numFds=%d, magic=%x", 76 handle->base.version, handle->base.numInts, 77 handle->base.numFds, handle->magic); 78 handle = NULL; 79 } 80 81 return handle; 82 } 83 84 /* 85 * The functions supported by gralloc_drm's temporary private API are listed 86 * below. Use of these functions is highly discouraged and should only be 87 * reserved for cases where no alternative to get same information (such as 88 * querying ANativeWindow) exists. 89 */ 90 enum { 91 GRALLOC_DRM_GET_STRIDE, 92 GRALLOC_DRM_GET_FORMAT, 93 GRALLOC_DRM_GET_DIMENSIONS, 94 GRALLOC_DRM_GET_BACKING_STORE, 95 }; 96 97 #ifdef __cplusplus 98 } 99 #endif 100 #endif /* _GRALLOC_DRM_HANDLE_H_ */ 101
