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 32 #include <stdlib.h> 33 #include <utils/Log.h> 34 #include <utils/Errors.h> 35 #include <hardware/camera3.h> 36 37 #include "QCamera3Factory.h" 38 39 using namespace android; 40 41 namespace qcamera { 42 43 QCamera3Factory gQCamera3Factory; 44 45 /*=========================================================================== 46 * FUNCTION : QCamera3Factory 47 * 48 * DESCRIPTION: default constructor of QCamera3Factory 49 * 50 * PARAMETERS : none 51 * 52 * RETURN : None 53 *==========================================================================*/ 54 QCamera3Factory::QCamera3Factory() 55 { 56 mNumOfCameras = get_num_of_cameras(); 57 } 58 59 /*=========================================================================== 60 * FUNCTION : ~QCamera3Factory 61 * 62 * DESCRIPTION: deconstructor of QCamera2Factory 63 * 64 * PARAMETERS : none 65 * 66 * RETURN : None 67 *==========================================================================*/ 68 QCamera3Factory::~QCamera3Factory() 69 { 70 } 71 72 /*=========================================================================== 73 * FUNCTION : get_number_of_cameras 74 * 75 * DESCRIPTION: static function to query number of cameras detected 76 * 77 * PARAMETERS : none 78 * 79 * RETURN : number of cameras detected 80 *==========================================================================*/ 81 int QCamera3Factory::get_number_of_cameras() 82 { 83 return gQCamera3Factory.getNumberOfCameras(); 84 } 85 86 /*=========================================================================== 87 * FUNCTION : get_camera_info 88 * 89 * DESCRIPTION: static function to query camera information with its ID 90 * 91 * PARAMETERS : 92 * @camera_id : camera ID 93 * @info : ptr to camera info struct 94 * 95 * RETURN : int32_t type of status 96 * NO_ERROR -- success 97 * none-zero failure code 98 *==========================================================================*/ 99 int QCamera3Factory::get_camera_info(int camera_id, struct camera_info *info) 100 { 101 return gQCamera3Factory.getCameraInfo(camera_id, info); 102 } 103 104 /*=========================================================================== 105 * FUNCTION : getNumberOfCameras 106 * 107 * DESCRIPTION: query number of cameras detected 108 * 109 * PARAMETERS : none 110 * 111 * RETURN : number of cameras detected 112 *==========================================================================*/ 113 int QCamera3Factory::getNumberOfCameras() 114 { 115 return mNumOfCameras; 116 } 117 118 /*=========================================================================== 119 * FUNCTION : getCameraInfo 120 * 121 * DESCRIPTION: query camera information with its ID 122 * 123 * PARAMETERS : 124 * @camera_id : camera ID 125 * @info : ptr to camera info struct 126 * 127 * RETURN : int32_t type of status 128 * NO_ERROR -- success 129 * none-zero failure code 130 *==========================================================================*/ 131 int QCamera3Factory::getCameraInfo(int camera_id, struct camera_info *info) 132 { 133 int rc; 134 ALOGV("%s: E, camera_id = %d", __func__, camera_id); 135 136 if (!mNumOfCameras || camera_id >= mNumOfCameras || !info || 137 (camera_id < 0)) { 138 return -ENODEV; 139 } 140 141 rc = QCamera3HardwareInterface::getCamInfo(camera_id, info); 142 ALOGV("%s: X", __func__); 143 return rc; 144 } 145 146 /*=========================================================================== 147 * FUNCTION : cameraDeviceOpen 148 * 149 * DESCRIPTION: open a camera device with its ID 150 * 151 * PARAMETERS : 152 * @camera_id : camera ID 153 * @hw_device : ptr to struct storing camera hardware device info 154 * 155 * RETURN : int32_t type of status 156 * NO_ERROR -- success 157 * none-zero failure code 158 *==========================================================================*/ 159 int QCamera3Factory::cameraDeviceOpen(int camera_id, 160 struct hw_device_t **hw_device) 161 { 162 int rc = NO_ERROR; 163 if (camera_id < 0 || camera_id >= mNumOfCameras) 164 return -ENODEV; 165 166 QCamera3HardwareInterface *hw = new QCamera3HardwareInterface(camera_id); 167 if (!hw) { 168 ALOGE("Allocation of hardware interface failed"); 169 return NO_MEMORY; 170 } 171 rc = hw->openCamera(hw_device); 172 if (rc != 0) { 173 delete hw; 174 } 175 return rc; 176 } 177 178 /*=========================================================================== 179 * FUNCTION : camera_device_open 180 * 181 * DESCRIPTION: static function to open a camera device by its ID 182 * 183 * PARAMETERS : 184 * @camera_id : camera ID 185 * @hw_device : ptr to struct storing camera hardware device info 186 * 187 * RETURN : int32_t type of status 188 * NO_ERROR -- success 189 * none-zero failure code 190 *==========================================================================*/ 191 int QCamera3Factory::camera_device_open( 192 const struct hw_module_t *module, const char *id, 193 struct hw_device_t **hw_device) 194 { 195 if (module != &HAL_MODULE_INFO_SYM.common) { 196 ALOGE("Invalid module. Trying to open %p, expect %p", 197 module, &HAL_MODULE_INFO_SYM.common); 198 return INVALID_OPERATION; 199 } 200 if (!id) { 201 ALOGE("Invalid camera id"); 202 return BAD_VALUE; 203 } 204 return gQCamera3Factory.cameraDeviceOpen(atoi(id), hw_device); 205 } 206 207 struct hw_module_methods_t QCamera3Factory::mModuleMethods = { 208 open: QCamera3Factory::camera_device_open, 209 }; 210 211 }; // namespace qcamera 212 213
