1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef GRALLOC_PRIV_H_ 18 #define GRALLOC_PRIV_H_ 19 20 #include <stdint.h> 21 #include <limits.h> 22 #include <sys/cdefs.h> 23 #include <hardware/gralloc.h> 24 #include <pthread.h> 25 #include <errno.h> 26 #include <unistd.h> 27 28 #include <cutils/native_handle.h> 29 30 #include <linux/fb.h> 31 32 /*****************************************************************************/ 33 34 struct private_module_t; 35 struct private_handle_t; 36 37 struct private_module_t { 38 gralloc_module_t base; 39 40 struct private_handle_t* framebuffer; 41 uint32_t flags; 42 uint32_t numBuffers; 43 uint32_t bufferMask; 44 pthread_mutex_t lock; 45 buffer_handle_t currentBuffer; 46 int pmem_master; 47 void* pmem_master_base; 48 unsigned long master_phys; 49 int gpu; 50 void* gpu_base; 51 int fb_map_offset; 52 53 struct fb_var_screeninfo info; 54 struct fb_fix_screeninfo finfo; 55 float xdpi; 56 float ydpi; 57 float fps; 58 }; 59 60 /*****************************************************************************/ 61 62 #ifdef __cplusplus 63 struct private_handle_t : public native_handle { 64 #else 65 struct private_handle_t { 66 native_handle_t nativeHandle; 67 #endif 68 69 enum { 70 PRIV_FLAGS_FRAMEBUFFER = 0x00000001, 71 PRIV_FLAGS_USES_PMEM = 0x00000002, 72 PRIV_FLAGS_USES_GPU = 0x00000004, 73 }; 74 75 // file-descriptors 76 int fd; 77 // ints 78 int magic; 79 int flags; 80 int size; 81 int offset; 82 int gpu_fd; // stored as an int, b/c we don't want it marshalled 83 84 // FIXME: the attributes below should be out-of-line 85 int base; 86 int map_offset; 87 int pid; 88 89 #ifdef __cplusplus 90 static const int sNumInts = 8; 91 static const int sNumFds = 1; 92 static const int sMagic = 'gmsm'; 93 private_handle_tprivate_handle_t94 private_handle_t(int fd, int size, int flags) : 95 fd(fd), magic(sMagic), flags(flags), size(size), offset(0), 96 base(0), pid(getpid()) 97 { 98 version = sizeof(native_handle); 99 numInts = sNumInts; 100 numFds = sNumFds; 101 } ~private_handle_tprivate_handle_t102 ~private_handle_t() { 103 magic = 0; 104 } 105 validateprivate_handle_t106 static int validate(const native_handle* h) { 107 const private_handle_t* hnd = (const private_handle_t*)h; 108 if (!h || h->version != sizeof(native_handle) || 109 h->numInts != sNumInts || h->numFds != sNumFds || 110 hnd->magic != sMagic) 111 { 112 LOGE("invalid gralloc handle (at %p)", h); 113 return -EINVAL; 114 } 115 return 0; 116 } 117 #endif 118 }; 119 120 #endif /* GRALLOC_PRIV_H_ */ 121