blob: f52bb05c42ae63e6bf9fd3af8bb6df3ae0b0adb9
| 1 | /* |
| 2 | * Copyright (C) 2011 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 | #define LOG_TAG "CAMHAL_MemoryManager " |
| 18 | |
| 19 | #include "CameraHal.h" |
| 20 | #include "ExCameraParameters.h" |
| 21 | |
| 22 | namespace android { |
| 23 | /*--------------------MemoryManager Class STARTS here-----------------------------*/ |
| 24 | int MemoryManager::setRequestMemoryCallback(camera_request_memory get_memory) |
| 25 | { |
| 26 | mRequestMemory = get_memory; |
| 27 | return 0; |
| 28 | } |
| 29 | |
| 30 | void* MemoryManager::allocateBuffer(int width, int height, const char* format, int &bytes, int numBufs) |
| 31 | { |
| 32 | LOG_FUNCTION_NAME; |
| 33 | ///We allocate numBufs+1 because the last entry will be marked NULL to indicate |
| 34 | ///end of array, which is used when freeing the buffers |
| 35 | const uint numArrayEntriesC = (uint)(numBufs+1); |
| 36 | |
| 37 | if (!mRequestMemory) |
| 38 | { |
| 39 | CAMHAL_LOGEA("no req. mem cb"); |
| 40 | LOG_FUNCTION_NAME_EXIT; |
| 41 | return NULL; |
| 42 | } |
| 43 | |
| 44 | ///Allocate a buffer array |
| 45 | uint32_t *bufsArr = new uint32_t [numArrayEntriesC]; |
| 46 | if(!bufsArr) |
| 47 | { |
| 48 | CAMHAL_LOGEB("Allocation failed when creating buffers array of %d uint32_t elements", numArrayEntriesC); |
| 49 | LOG_FUNCTION_NAME_EXIT; |
| 50 | return NULL; |
| 51 | } |
| 52 | |
| 53 | ///Initialize the array with zeros - this will help us while freeing the array in case of error |
| 54 | ///If a value of an array element is NULL, it means we didnt allocate it |
| 55 | memset(bufsArr, 0, sizeof(*bufsArr) * numArrayEntriesC); |
| 56 | |
| 57 | //2D Allocations are not supported currently |
| 58 | if(bytes != 0) |
| 59 | { |
| 60 | camera_memory_t* handle = NULL; |
| 61 | |
| 62 | ///1D buffers |
| 63 | for (int i = 0; i < numBufs; i++) |
| 64 | { |
| 65 | handle = mRequestMemory(-1, bytes, 1, NULL); |
| 66 | if(!handle) |
| 67 | { |
| 68 | CAMHAL_LOGEA("req. mem failed"); |
| 69 | goto error; |
| 70 | } |
| 71 | |
| 72 | CAMHAL_LOGDB("handle = %x, nSize = %d", (uint32_t)handle, bytes); |
| 73 | bufsArr[i] = (uint32_t)handle; |
| 74 | |
| 75 | mMemoryHandleMap.add(bufsArr[i], (unsigned int)handle); |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | LOG_FUNCTION_NAME_EXIT; |
| 80 | |
| 81 | return (void*)bufsArr; |
| 82 | |
| 83 | error: |
| 84 | CAMHAL_LOGEA("Freeing buffers already allocated after error occurred"); |
| 85 | freeBuffer(bufsArr); |
| 86 | |
| 87 | if ( NULL != mErrorNotifier.get() ) |
| 88 | { |
| 89 | mErrorNotifier->errorNotify(-ENOMEM); |
| 90 | } |
| 91 | |
| 92 | LOG_FUNCTION_NAME_EXIT; |
| 93 | return NULL; |
| 94 | } |
| 95 | |
| 96 | uint32_t * MemoryManager::getOffsets() |
| 97 | { |
| 98 | LOG_FUNCTION_NAME; |
| 99 | LOG_FUNCTION_NAME_EXIT; |
| 100 | return NULL; |
| 101 | } |
| 102 | |
| 103 | int MemoryManager::getFd() |
| 104 | { |
| 105 | LOG_FUNCTION_NAME; |
| 106 | LOG_FUNCTION_NAME_EXIT; |
| 107 | return -1; |
| 108 | } |
| 109 | |
| 110 | int MemoryManager::freeBuffer(void* buf) |
| 111 | { |
| 112 | status_t ret = NO_ERROR; |
| 113 | LOG_FUNCTION_NAME; |
| 114 | |
| 115 | uint32_t *bufEntry = (uint32_t*)buf; |
| 116 | |
| 117 | if(!bufEntry) |
| 118 | { |
| 119 | CAMHAL_LOGEA("NULL pointer passed to freebuffer"); |
| 120 | LOG_FUNCTION_NAME_EXIT; |
| 121 | return BAD_VALUE; |
| 122 | } |
| 123 | |
| 124 | while(*bufEntry) |
| 125 | { |
| 126 | unsigned int ptr = (unsigned int) *bufEntry++; |
| 127 | camera_memory_t* handle = (camera_memory_t*)mMemoryHandleMap.valueFor(ptr); |
| 128 | if(handle) |
| 129 | { |
| 130 | handle->release(handle); |
| 131 | } |
| 132 | else |
| 133 | { |
| 134 | CAMHAL_LOGEA("Not a valid Memory Manager buffer"); |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | ///@todo Check if this way of deleting array is correct, else use malloc/free |
| 139 | uint32_t * bufArr = (uint32_t*)buf; |
| 140 | delete [] bufArr; |
| 141 | |
| 142 | LOG_FUNCTION_NAME_EXIT; |
| 143 | return ret; |
| 144 | } |
| 145 | |
| 146 | status_t MemoryManager::setErrorHandler(ErrorNotifier *errorNotifier) |
| 147 | { |
| 148 | status_t ret = NO_ERROR; |
| 149 | |
| 150 | LOG_FUNCTION_NAME; |
| 151 | |
| 152 | if ( NULL == errorNotifier ) |
| 153 | { |
| 154 | CAMHAL_LOGEA("Invalid Error Notifier reference"); |
| 155 | ret = -EINVAL; |
| 156 | } |
| 157 | |
| 158 | if ( NO_ERROR == ret ) |
| 159 | { |
| 160 | mErrorNotifier = errorNotifier; |
| 161 | } |
| 162 | |
| 163 | LOG_FUNCTION_NAME_EXIT; |
| 164 | |
| 165 | return ret; |
| 166 | } |
| 167 | |
| 168 | }; |
| 169 | |
| 170 | |
| 171 | /*--------------------MemoryManager Class ENDS here-----------------------------*/ |
| 172 |