1 /* Copyright (c) 2012-2013, 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; 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 return gQCamera3Factory.getNumberOfCameras(); 96 } 97 98 /*=========================================================================== 99 * FUNCTION : get_camera_info 100 * 101 * DESCRIPTION: static function to query camera information with its ID 102 * 103 * PARAMETERS : 104 * @camera_id : camera ID 105 * @info : ptr to camera info struct 106 * 107 * RETURN : int32_t type of status 108 * NO_ERROR -- success 109 * none-zero failure code 110 *==========================================================================*/ 111 int QCamera3Factory::get_camera_info(int camera_id, struct camera_info *info) 112 { 113 return gQCamera3Factory.getCameraInfo(camera_id, info); 114 } 115 116 /*=========================================================================== 117 * FUNCTION : getNumberOfCameras 118 * 119 * DESCRIPTION: query number of cameras detected 120 * 121 * PARAMETERS : none 122 * 123 * RETURN : number of cameras detected 124 *==========================================================================*/ 125 int QCamera3Factory::getNumberOfCameras() 126 { 127 return mNumOfCameras; 128 } 129 130 /*=========================================================================== 131 * FUNCTION : getCameraInfo 132 * 133 * DESCRIPTION: query camera information with its ID 134 * 135 * PARAMETERS : 136 * @camera_id : camera ID 137 * @info : ptr to camera info struct 138 * 139 * RETURN : int32_t type of status 140 * NO_ERROR -- success 141 * none-zero failure code 142 *==========================================================================*/ 143 int QCamera3Factory::getCameraInfo(int camera_id, struct camera_info *info) 144 { 145 int rc; 146 ALOGV("%s: E, camera_id = %d", __func__, camera_id); 147 148 if (!mNumOfCameras || camera_id >= mNumOfCameras || !info || 149 (camera_id < 0)) { 150 return -ENODEV; 151 } 152 153 rc = QCamera3HardwareInterface::getCamInfo(camera_id, info); 154 ALOGV("%s: X", __func__); 155 return rc; 156 } 157 158 /*=========================================================================== 159 * FUNCTION : cameraDeviceOpen 160 * 161 * DESCRIPTION: open a camera device with its ID 162 * 163 * PARAMETERS : 164 * @camera_id : camera ID 165 * @hw_device : ptr to struct storing camera hardware device info 166 * 167 * RETURN : int32_t type of status 168 * NO_ERROR -- success 169 * none-zero failure code 170 *==========================================================================*/ 171 int QCamera3Factory::cameraDeviceOpen(int camera_id, 172 struct hw_device_t **hw_device) 173 { 174 int rc = NO_ERROR; 175 if (camera_id < 0 || camera_id >= mNumOfCameras) 176 return -ENODEV; 177 178 QCamera3HardwareInterface *hw = new QCamera3HardwareInterface(camera_id); 179 if (!hw) { 180 ALOGE("Allocation of hardware interface failed"); 181 return NO_MEMORY; 182 } 183 rc = hw->openCamera(hw_device); 184 if (rc != 0) { 185 delete hw; 186 } 187 return rc; 188 } 189 190 /*=========================================================================== 191 * FUNCTION : camera_device_open 192 * 193 * DESCRIPTION: static function to open a camera device by its ID 194 * 195 * PARAMETERS : 196 * @camera_id : camera ID 197 * @hw_device : ptr to struct storing camera hardware device info 198 * 199 * RETURN : int32_t type of status 200 * NO_ERROR -- success 201 * none-zero failure code 202 *==========================================================================*/ 203 int QCamera3Factory::camera_device_open( 204 const struct hw_module_t *module, const char *id, 205 struct hw_device_t **hw_device) 206 { 207 if (module != &HAL_MODULE_INFO_SYM.common) { 208 ALOGE("Invalid module. Trying to open %p, expect %p", 209 module, &HAL_MODULE_INFO_SYM.common); 210 return INVALID_OPERATION; 211 } 212 if (!id) { 213 ALOGE("Invalid camera id"); 214 return BAD_VALUE; 215 } 216 return gQCamera3Factory.cameraDeviceOpen(atoi(id), hw_device); 217 } 218 219 struct hw_module_methods_t QCamera3Factory::mModuleMethods = { 220 open: QCamera3Factory::camera_device_open, 221 }; 222 223 }; // namespace qcamera 224 225
