1 /* Copyright (c) 2012-2014, The Linux Foundataion. All rights reserved. 2 * 3 * Redistribution and use in source and binary forms, with or without 4 * modification, are permitted provided that the following conditions are 5 * met: 6 * * Redistributions of source code must retain the above copyright 7 * notice, this list of conditions and the following disclaimer. 8 * * Redistributions in binary form must reproduce the above 9 * copyright notice, this list of conditions and the following 10 * disclaimer in the documentation and/or other materials provided 11 * with the distribution. 12 * * Neither the name of The Linux Foundation nor the names of its 13 * contributors may be used to endorse or promote products derived 14 * from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 23 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 25 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 26 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 */ 29 30 #define LOG_TAG "QCamera3Factory" 31 //#define LOG_NDEBUG 0 32 33 #include <stdlib.h> 34 #include <utils/Log.h> 35 #include <utils/Errors.h> 36 #include <hardware/camera3.h> 37 38 #include "QCamera3Factory.h" 39 40 using namespace android; 41 42 namespace qcamera { 43 44 QCamera3Factory *gQCamera3Factory = NULL; 45 46 /*=========================================================================== 47 * FUNCTION : QCamera3Factory 48 * 49 * DESCRIPTION: default constructor of QCamera3Factory 50 * 51 * PARAMETERS : none 52 * 53 * RETURN : None 54 *==========================================================================*/ 55 QCamera3Factory::QCamera3Factory() 56 { 57 camera_info info; 58 59 mNumOfCameras = get_num_of_cameras(); 60 61 //Query camera at this point in order 62 //to avoid any delays during subsequent 63 //calls to 'getCameraInfo()' 64 for (int i = 0 ; i < mNumOfCameras ; i++) { 65 getCameraInfo(i, &info); 66 } 67 // 68 69 } 70 71 /*=========================================================================== 72 * FUNCTION : ~QCamera3Factory 73 * 74 * DESCRIPTION: deconstructor of QCamera2Factory 75 * 76 * PARAMETERS : none 77 * 78 * RETURN : None 79 *==========================================================================*/ 80 QCamera3Factory::~QCamera3Factory() 81 { 82 } 83 84 /*=========================================================================== 85 * FUNCTION : get_number_of_cameras 86 * 87 * DESCRIPTION: static function to query number of cameras detected 88 * 89 * PARAMETERS : none 90 * 91 * RETURN : number of cameras detected 92 *==========================================================================*/ 93 int QCamera3Factory::get_number_of_cameras() 94 { 95 if (!gQCamera3Factory) { 96 gQCamera3Factory = new QCamera3Factory(); 97 if (!gQCamera3Factory) { 98 ALOGE("%s: Failed to allocate Camera3Factory object", __func__); 99 return 0; 100 } 101 } 102 return gQCamera3Factory->getNumberOfCameras(); 103 } 104 105 /*=========================================================================== 106 * FUNCTION : get_camera_info 107 * 108 * DESCRIPTION: static function to query camera information with its ID 109 * 110 * PARAMETERS : 111 * @camera_id : camera ID 112 * @info : ptr to camera info struct 113 * 114 * RETURN : int32_t type of status 115 * NO_ERROR -- success 116 * none-zero failure code 117 *==========================================================================*/ 118 int QCamera3Factory::get_camera_info(int camera_id, struct camera_info *info) 119 { 120 return gQCamera3Factory->getCameraInfo(camera_id, info); 121 } 122 123 /*=========================================================================== 124 * FUNCTION : getNumberOfCameras 125 * 126 * DESCRIPTION: query number of cameras detected 127 * 128 * PARAMETERS : none 129 * 130 * RETURN : number of cameras detected 131 *==========================================================================*/ 132 int QCamera3Factory::getNumberOfCameras() 133 { 134 return mNumOfCameras; 135 } 136 137 /*=========================================================================== 138 * FUNCTION : getCameraInfo 139 * 140 * DESCRIPTION: query camera information with its ID 141 * 142 * PARAMETERS : 143 * @camera_id : camera ID 144 * @info : ptr to camera info struct 145 * 146 * RETURN : int32_t type of status 147 * NO_ERROR -- success 148 * none-zero failure code 149 *==========================================================================*/ 150 int QCamera3Factory::getCameraInfo(int camera_id, struct camera_info *info) 151 { 152 int rc; 153 ALOGV("%s: E, camera_id = %d", __func__, camera_id); 154 155 if (!mNumOfCameras || camera_id >= mNumOfCameras || !info || 156 (camera_id < 0)) { 157 return -ENODEV; 158 } 159 160 rc = QCamera3HardwareInterface::getCamInfo(camera_id, info); 161 ALOGV("%s: X", __func__); 162 return rc; 163 } 164 165 /*=========================================================================== 166 * FUNCTION : cameraDeviceOpen 167 * 168 * DESCRIPTION: open a camera device with its ID 169 * 170 * PARAMETERS : 171 * @camera_id : camera ID 172 * @hw_device : ptr to struct storing camera hardware device info 173 * 174 * RETURN : int32_t type of status 175 * NO_ERROR -- success 176 * none-zero failure code 177 *==========================================================================*/ 178 int QCamera3Factory::cameraDeviceOpen(int camera_id, 179 struct hw_device_t **hw_device) 180 { 181 int rc = NO_ERROR; 182 if (camera_id < 0 || camera_id >= mNumOfCameras) 183 return -ENODEV; 184 185 QCamera3HardwareInterface *hw = new QCamera3HardwareInterface(camera_id); 186 if (!hw) { 187 ALOGE("Allocation of hardware interface failed"); 188 return NO_MEMORY; 189 } 190 rc = hw->openCamera(hw_device); 191 if (rc != 0) { 192 delete hw; 193 } 194 return rc; 195 } 196 197 /*=========================================================================== 198 * FUNCTION : camera_device_open 199 * 200 * DESCRIPTION: static function to open a camera device by its ID 201 * 202 * PARAMETERS : 203 * @camera_id : camera ID 204 * @hw_device : ptr to struct storing camera hardware device info 205 * 206 * RETURN : int32_t type of status 207 * NO_ERROR -- success 208 * none-zero failure code 209 *==========================================================================*/ 210 int QCamera3Factory::camera_device_open( 211 const struct hw_module_t *module, const char *id, 212 struct hw_device_t **hw_device) 213 { 214 if (module != &HAL_MODULE_INFO_SYM.common) { 215 ALOGE("Invalid module. Trying to open %p, expect %p", 216 module, &HAL_MODULE_INFO_SYM.common); 217 return INVALID_OPERATION; 218 } 219 if (!id) { 220 ALOGE("Invalid camera id"); 221 return BAD_VALUE; 222 } 223 return gQCamera3Factory->cameraDeviceOpen(atoi(id), hw_device); 224 } 225 226 struct hw_module_methods_t QCamera3Factory::mModuleMethods = { 227 open: QCamera3Factory::camera_device_open, 228 }; 229 230 }; // namespace qcamera 231 232
