1 /*M/////////////////////////////////////////////////////////////////////////////////////// 2 // 3 // IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. 4 // 5 // By downloading, copying, installing or using the software you agree to this license. 6 // If you do not agree to this license, do not download, install, 7 // copy or use the software. 8 // 9 // 10 // Intel License Agreement 11 // For Open Source Computer Vision Library 12 // 13 // Copyright (C) 2000, Intel Corporation, all rights reserved. 14 // Third party copyrights are property of their respective owners. 15 // 16 // Redistribution and use in source and binary forms, with or without modification, 17 // are permitted provided that the following conditions are met: 18 // 19 // * Redistribution's of source code must retain the above copyright notice, 20 // this list of conditions and the following disclaimer. 21 // 22 // * Redistribution's in binary form must reproduce the above copyright notice, 23 // this list of conditions and the following disclaimer in the documentation 24 // and/or other materials provided with the distribution. 25 // 26 // * The name of Intel Corporation may not be used to endorse or promote products 27 // derived from this software without specific prior written permission. 28 // 29 // This software is provided by the copyright holders and contributors "as is" and 30 // any express or implied warranties, including, but not limited to, the implied 31 // warranties of merchantability and fitness for a particular purpose are disclaimed. 32 // In no event shall the Intel Corporation or contributors be liable for any direct, 33 // indirect, incidental, special, exemplary, or consequential damages 34 // (including, but not limited to, procurement of substitute goods or services; 35 // loss of use, data, or profits; or business interruption) however caused 36 // and on any theory of liability, whether in contract, strict liability, 37 // or tort (including negligence or otherwise) arising in any way out of 38 // the use of this software, even if advised of the possibility of such damage. 39 // 40 //M*/ 41 42 #ifndef __OPENCV_VIDEOIO_H__ 43 #define __OPENCV_VIDEOIO_H__ 44 45 #include "opencv2/core/core_c.h" 46 47 #ifdef __cplusplus 48 extern "C" { 49 #endif /* __cplusplus */ 50 51 /** 52 @addtogroup videoio_c 53 @{ 54 */ 55 56 /****************************************************************************************\ 57 * Working with Video Files and Cameras * 58 \****************************************************************************************/ 59 60 /* "black box" capture structure */ 61 typedef struct CvCapture CvCapture; 62 63 /* start capturing frames from video file */ 64 CVAPI(CvCapture*) cvCreateFileCapture( const char* filename ); 65 66 enum 67 { 68 CV_CAP_ANY =0, // autodetect 69 70 CV_CAP_MIL =100, // MIL proprietary drivers 71 72 CV_CAP_VFW =200, // platform native 73 CV_CAP_V4L =200, 74 CV_CAP_V4L2 =200, 75 76 CV_CAP_FIREWARE =300, // IEEE 1394 drivers 77 CV_CAP_FIREWIRE =300, 78 CV_CAP_IEEE1394 =300, 79 CV_CAP_DC1394 =300, 80 CV_CAP_CMU1394 =300, 81 82 CV_CAP_STEREO =400, // TYZX proprietary drivers 83 CV_CAP_TYZX =400, 84 CV_TYZX_LEFT =400, 85 CV_TYZX_RIGHT =401, 86 CV_TYZX_COLOR =402, 87 CV_TYZX_Z =403, 88 89 CV_CAP_QT =500, // QuickTime 90 91 CV_CAP_UNICAP =600, // Unicap drivers 92 93 CV_CAP_DSHOW =700, // DirectShow (via videoInput) 94 CV_CAP_MSMF =1400, // Microsoft Media Foundation (via videoInput) 95 96 CV_CAP_PVAPI =800, // PvAPI, Prosilica GigE SDK 97 98 CV_CAP_OPENNI =900, // OpenNI (for Kinect) 99 CV_CAP_OPENNI_ASUS =910, // OpenNI (for Asus Xtion) 100 101 CV_CAP_ANDROID =1000, // Android - not used 102 CV_CAP_ANDROID_BACK =CV_CAP_ANDROID+99, // Android back camera - not used 103 CV_CAP_ANDROID_FRONT =CV_CAP_ANDROID+98, // Android front camera - not used 104 105 CV_CAP_XIAPI =1100, // XIMEA Camera API 106 107 CV_CAP_AVFOUNDATION = 1200, // AVFoundation framework for iOS (OS X Lion will have the same API) 108 109 CV_CAP_GIGANETIX = 1300, // Smartek Giganetix GigEVisionSDK 110 111 CV_CAP_INTELPERC = 1500, // Intel Perceptual Computing 112 113 CV_CAP_OPENNI2 = 1600, // OpenNI2 (for Kinect) 114 115 CV_CAP_GPHOTO2 = 1700 116 }; 117 118 /* start capturing frames from camera: index = camera_index + domain_offset (CV_CAP_*) */ 119 CVAPI(CvCapture*) cvCreateCameraCapture( int index ); 120 121 /* grab a frame, return 1 on success, 0 on fail. 122 this function is thought to be fast */ 123 CVAPI(int) cvGrabFrame( CvCapture* capture ); 124 125 /* get the frame grabbed with cvGrabFrame(..) 126 This function may apply some frame processing like 127 frame decompression, flipping etc. 128 !!!DO NOT RELEASE or MODIFY the retrieved frame!!! */ 129 CVAPI(IplImage*) cvRetrieveFrame( CvCapture* capture, int streamIdx CV_DEFAULT(0) ); 130 131 /* Just a combination of cvGrabFrame and cvRetrieveFrame 132 !!!DO NOT RELEASE or MODIFY the retrieved frame!!! */ 133 CVAPI(IplImage*) cvQueryFrame( CvCapture* capture ); 134 135 /* stop capturing/reading and free resources */ 136 CVAPI(void) cvReleaseCapture( CvCapture** capture ); 137 138 enum 139 { 140 // modes of the controlling registers (can be: auto, manual, auto single push, absolute Latter allowed with any other mode) 141 // every feature can have only one mode turned on at a time 142 CV_CAP_PROP_DC1394_OFF = -4, //turn the feature off (not controlled manually nor automatically) 143 CV_CAP_PROP_DC1394_MODE_MANUAL = -3, //set automatically when a value of the feature is set by the user 144 CV_CAP_PROP_DC1394_MODE_AUTO = -2, 145 CV_CAP_PROP_DC1394_MODE_ONE_PUSH_AUTO = -1, 146 CV_CAP_PROP_POS_MSEC =0, 147 CV_CAP_PROP_POS_FRAMES =1, 148 CV_CAP_PROP_POS_AVI_RATIO =2, 149 CV_CAP_PROP_FRAME_WIDTH =3, 150 CV_CAP_PROP_FRAME_HEIGHT =4, 151 CV_CAP_PROP_FPS =5, 152 CV_CAP_PROP_FOURCC =6, 153 CV_CAP_PROP_FRAME_COUNT =7, 154 CV_CAP_PROP_FORMAT =8, 155 CV_CAP_PROP_MODE =9, 156 CV_CAP_PROP_BRIGHTNESS =10, 157 CV_CAP_PROP_CONTRAST =11, 158 CV_CAP_PROP_SATURATION =12, 159 CV_CAP_PROP_HUE =13, 160 CV_CAP_PROP_GAIN =14, 161 CV_CAP_PROP_EXPOSURE =15, 162 CV_CAP_PROP_CONVERT_RGB =16, 163 CV_CAP_PROP_WHITE_BALANCE_BLUE_U =17, 164 CV_CAP_PROP_RECTIFICATION =18, 165 CV_CAP_PROP_MONOCHROME =19, 166 CV_CAP_PROP_SHARPNESS =20, 167 CV_CAP_PROP_AUTO_EXPOSURE =21, // exposure control done by camera, 168 // user can adjust refernce level 169 // using this feature 170 CV_CAP_PROP_GAMMA =22, 171 CV_CAP_PROP_TEMPERATURE =23, 172 CV_CAP_PROP_TRIGGER =24, 173 CV_CAP_PROP_TRIGGER_DELAY =25, 174 CV_CAP_PROP_WHITE_BALANCE_RED_V =26, 175 CV_CAP_PROP_ZOOM =27, 176 CV_CAP_PROP_FOCUS =28, 177 CV_CAP_PROP_GUID =29, 178 CV_CAP_PROP_ISO_SPEED =30, 179 CV_CAP_PROP_MAX_DC1394 =31, 180 CV_CAP_PROP_BACKLIGHT =32, 181 CV_CAP_PROP_PAN =33, 182 CV_CAP_PROP_TILT =34, 183 CV_CAP_PROP_ROLL =35, 184 CV_CAP_PROP_IRIS =36, 185 CV_CAP_PROP_SETTINGS =37, 186 CV_CAP_PROP_BUFFERSIZE =38, 187 188 CV_CAP_PROP_AUTOGRAB =1024, // property for videoio class CvCapture_Android only 189 CV_CAP_PROP_SUPPORTED_PREVIEW_SIZES_STRING=1025, // readonly, tricky property, returns cpnst char* indeed 190 CV_CAP_PROP_PREVIEW_FORMAT=1026, // readonly, tricky property, returns cpnst char* indeed 191 192 // OpenNI map generators 193 CV_CAP_OPENNI_DEPTH_GENERATOR = 1 << 31, 194 CV_CAP_OPENNI_IMAGE_GENERATOR = 1 << 30, 195 CV_CAP_OPENNI_GENERATORS_MASK = CV_CAP_OPENNI_DEPTH_GENERATOR + CV_CAP_OPENNI_IMAGE_GENERATOR, 196 197 // Properties of cameras available through OpenNI interfaces 198 CV_CAP_PROP_OPENNI_OUTPUT_MODE = 100, 199 CV_CAP_PROP_OPENNI_FRAME_MAX_DEPTH = 101, // in mm 200 CV_CAP_PROP_OPENNI_BASELINE = 102, // in mm 201 CV_CAP_PROP_OPENNI_FOCAL_LENGTH = 103, // in pixels 202 CV_CAP_PROP_OPENNI_REGISTRATION = 104, // flag 203 CV_CAP_PROP_OPENNI_REGISTRATION_ON = CV_CAP_PROP_OPENNI_REGISTRATION, // flag that synchronizes the remapping depth map to image map 204 // by changing depth generator's view point (if the flag is "on") or 205 // sets this view point to its normal one (if the flag is "off"). 206 CV_CAP_PROP_OPENNI_APPROX_FRAME_SYNC = 105, 207 CV_CAP_PROP_OPENNI_MAX_BUFFER_SIZE = 106, 208 CV_CAP_PROP_OPENNI_CIRCLE_BUFFER = 107, 209 CV_CAP_PROP_OPENNI_MAX_TIME_DURATION = 108, 210 211 CV_CAP_PROP_OPENNI_GENERATOR_PRESENT = 109, 212 CV_CAP_PROP_OPENNI2_SYNC = 110, 213 CV_CAP_PROP_OPENNI2_MIRROR = 111, 214 215 CV_CAP_OPENNI_IMAGE_GENERATOR_PRESENT = CV_CAP_OPENNI_IMAGE_GENERATOR + CV_CAP_PROP_OPENNI_GENERATOR_PRESENT, 216 CV_CAP_OPENNI_IMAGE_GENERATOR_OUTPUT_MODE = CV_CAP_OPENNI_IMAGE_GENERATOR + CV_CAP_PROP_OPENNI_OUTPUT_MODE, 217 CV_CAP_OPENNI_DEPTH_GENERATOR_BASELINE = CV_CAP_OPENNI_DEPTH_GENERATOR + CV_CAP_PROP_OPENNI_BASELINE, 218 CV_CAP_OPENNI_DEPTH_GENERATOR_FOCAL_LENGTH = CV_CAP_OPENNI_DEPTH_GENERATOR + CV_CAP_PROP_OPENNI_FOCAL_LENGTH, 219 CV_CAP_OPENNI_DEPTH_GENERATOR_REGISTRATION = CV_CAP_OPENNI_DEPTH_GENERATOR + CV_CAP_PROP_OPENNI_REGISTRATION, 220 CV_CAP_OPENNI_DEPTH_GENERATOR_REGISTRATION_ON = CV_CAP_OPENNI_DEPTH_GENERATOR_REGISTRATION, 221 222 // Properties of cameras available through GStreamer interface 223 CV_CAP_GSTREAMER_QUEUE_LENGTH = 200, // default is 1 224 225 // PVAPI 226 CV_CAP_PROP_PVAPI_MULTICASTIP = 300, // ip for anable multicast master mode. 0 for disable multicast 227 CV_CAP_PROP_PVAPI_FRAMESTARTTRIGGERMODE = 301, // FrameStartTriggerMode: Determines how a frame is initiated 228 CV_CAP_PROP_PVAPI_DECIMATIONHORIZONTAL = 302, // Horizontal sub-sampling of the image 229 CV_CAP_PROP_PVAPI_DECIMATIONVERTICAL = 303, // Vertical sub-sampling of the image 230 CV_CAP_PROP_PVAPI_BINNINGX = 304, // Horizontal binning factor 231 CV_CAP_PROP_PVAPI_BINNINGY = 305, // Vertical binning factor 232 CV_CAP_PROP_PVAPI_PIXELFORMAT = 306, // Pixel format 233 234 // Properties of cameras available through XIMEA SDK interface 235 CV_CAP_PROP_XI_DOWNSAMPLING = 400, // Change image resolution by binning or skipping. 236 CV_CAP_PROP_XI_DATA_FORMAT = 401, // Output data format. 237 CV_CAP_PROP_XI_OFFSET_X = 402, // Horizontal offset from the origin to the area of interest (in pixels). 238 CV_CAP_PROP_XI_OFFSET_Y = 403, // Vertical offset from the origin to the area of interest (in pixels). 239 CV_CAP_PROP_XI_TRG_SOURCE = 404, // Defines source of trigger. 240 CV_CAP_PROP_XI_TRG_SOFTWARE = 405, // Generates an internal trigger. PRM_TRG_SOURCE must be set to TRG_SOFTWARE. 241 CV_CAP_PROP_XI_GPI_SELECTOR = 406, // Selects general purpose input 242 CV_CAP_PROP_XI_GPI_MODE = 407, // Set general purpose input mode 243 CV_CAP_PROP_XI_GPI_LEVEL = 408, // Get general purpose level 244 CV_CAP_PROP_XI_GPO_SELECTOR = 409, // Selects general purpose output 245 CV_CAP_PROP_XI_GPO_MODE = 410, // Set general purpose output mode 246 CV_CAP_PROP_XI_LED_SELECTOR = 411, // Selects camera signalling LED 247 CV_CAP_PROP_XI_LED_MODE = 412, // Define camera signalling LED functionality 248 CV_CAP_PROP_XI_MANUAL_WB = 413, // Calculates White Balance(must be called during acquisition) 249 CV_CAP_PROP_XI_AUTO_WB = 414, // Automatic white balance 250 CV_CAP_PROP_XI_AEAG = 415, // Automatic exposure/gain 251 CV_CAP_PROP_XI_EXP_PRIORITY = 416, // Exposure priority (0.5 - exposure 50%, gain 50%). 252 CV_CAP_PROP_XI_AE_MAX_LIMIT = 417, // Maximum limit of exposure in AEAG procedure 253 CV_CAP_PROP_XI_AG_MAX_LIMIT = 418, // Maximum limit of gain in AEAG procedure 254 CV_CAP_PROP_XI_AEAG_LEVEL = 419, // Average intensity of output signal AEAG should achieve(in %) 255 CV_CAP_PROP_XI_TIMEOUT = 420, // Image capture timeout in milliseconds 256 257 // Properties for Android cameras 258 CV_CAP_PROP_ANDROID_FLASH_MODE = 8001, 259 CV_CAP_PROP_ANDROID_FOCUS_MODE = 8002, 260 CV_CAP_PROP_ANDROID_WHITE_BALANCE = 8003, 261 CV_CAP_PROP_ANDROID_ANTIBANDING = 8004, 262 CV_CAP_PROP_ANDROID_FOCAL_LENGTH = 8005, 263 CV_CAP_PROP_ANDROID_FOCUS_DISTANCE_NEAR = 8006, 264 CV_CAP_PROP_ANDROID_FOCUS_DISTANCE_OPTIMAL = 8007, 265 CV_CAP_PROP_ANDROID_FOCUS_DISTANCE_FAR = 8008, 266 CV_CAP_PROP_ANDROID_EXPOSE_LOCK = 8009, 267 CV_CAP_PROP_ANDROID_WHITEBALANCE_LOCK = 8010, 268 269 // Properties of cameras available through AVFOUNDATION interface 270 CV_CAP_PROP_IOS_DEVICE_FOCUS = 9001, 271 CV_CAP_PROP_IOS_DEVICE_EXPOSURE = 9002, 272 CV_CAP_PROP_IOS_DEVICE_FLASH = 9003, 273 CV_CAP_PROP_IOS_DEVICE_WHITEBALANCE = 9004, 274 CV_CAP_PROP_IOS_DEVICE_TORCH = 9005, 275 276 // Properties of cameras available through Smartek Giganetix Ethernet Vision interface 277 /* --- Vladimir Litvinenko (litvinenko.vladimir (at) gmail.com) --- */ 278 CV_CAP_PROP_GIGA_FRAME_OFFSET_X = 10001, 279 CV_CAP_PROP_GIGA_FRAME_OFFSET_Y = 10002, 280 CV_CAP_PROP_GIGA_FRAME_WIDTH_MAX = 10003, 281 CV_CAP_PROP_GIGA_FRAME_HEIGH_MAX = 10004, 282 CV_CAP_PROP_GIGA_FRAME_SENS_WIDTH = 10005, 283 CV_CAP_PROP_GIGA_FRAME_SENS_HEIGH = 10006, 284 285 CV_CAP_PROP_INTELPERC_PROFILE_COUNT = 11001, 286 CV_CAP_PROP_INTELPERC_PROFILE_IDX = 11002, 287 CV_CAP_PROP_INTELPERC_DEPTH_LOW_CONFIDENCE_VALUE = 11003, 288 CV_CAP_PROP_INTELPERC_DEPTH_SATURATION_VALUE = 11004, 289 CV_CAP_PROP_INTELPERC_DEPTH_CONFIDENCE_THRESHOLD = 11005, 290 CV_CAP_PROP_INTELPERC_DEPTH_FOCAL_LENGTH_HORZ = 11006, 291 CV_CAP_PROP_INTELPERC_DEPTH_FOCAL_LENGTH_VERT = 11007, 292 293 // Intel PerC streams 294 CV_CAP_INTELPERC_DEPTH_GENERATOR = 1 << 29, 295 CV_CAP_INTELPERC_IMAGE_GENERATOR = 1 << 28, 296 CV_CAP_INTELPERC_GENERATORS_MASK = CV_CAP_INTELPERC_DEPTH_GENERATOR + CV_CAP_INTELPERC_IMAGE_GENERATOR 297 }; 298 299 // Generic camera output modes. 300 // Currently, these are supported through the libv4l interface only. 301 enum 302 { 303 CV_CAP_MODE_BGR = 0, // BGR24 (default) 304 CV_CAP_MODE_RGB = 1, // RGB24 305 CV_CAP_MODE_GRAY = 2, // Y8 306 CV_CAP_MODE_YUYV = 3 // YUYV 307 }; 308 309 enum 310 { 311 // Data given from depth generator. 312 CV_CAP_OPENNI_DEPTH_MAP = 0, // Depth values in mm (CV_16UC1) 313 CV_CAP_OPENNI_POINT_CLOUD_MAP = 1, // XYZ in meters (CV_32FC3) 314 CV_CAP_OPENNI_DISPARITY_MAP = 2, // Disparity in pixels (CV_8UC1) 315 CV_CAP_OPENNI_DISPARITY_MAP_32F = 3, // Disparity in pixels (CV_32FC1) 316 CV_CAP_OPENNI_VALID_DEPTH_MASK = 4, // CV_8UC1 317 318 // Data given from RGB image generator. 319 CV_CAP_OPENNI_BGR_IMAGE = 5, 320 CV_CAP_OPENNI_GRAY_IMAGE = 6 321 }; 322 323 // Supported output modes of OpenNI image generator 324 enum 325 { 326 CV_CAP_OPENNI_VGA_30HZ = 0, 327 CV_CAP_OPENNI_SXGA_15HZ = 1, 328 CV_CAP_OPENNI_SXGA_30HZ = 2, 329 CV_CAP_OPENNI_QVGA_30HZ = 3, 330 CV_CAP_OPENNI_QVGA_60HZ = 4 331 }; 332 333 enum 334 { 335 CV_CAP_INTELPERC_DEPTH_MAP = 0, // Each pixel is a 16-bit integer. The value indicates the distance from an object to the camera's XY plane or the Cartesian depth. 336 CV_CAP_INTELPERC_UVDEPTH_MAP = 1, // Each pixel contains two 32-bit floating point values in the range of 0-1, representing the mapping of depth coordinates to the color coordinates. 337 CV_CAP_INTELPERC_IR_MAP = 2, // Each pixel is a 16-bit integer. The value indicates the intensity of the reflected laser beam. 338 CV_CAP_INTELPERC_IMAGE = 3 339 }; 340 341 // gPhoto2 properties, if propertyId is less than 0 then work on widget with that __additive inversed__ camera setting ID 342 // Get IDs by using CAP_PROP_GPHOTO2_WIDGET_ENUMERATE. 343 // @see CvCaptureCAM_GPHOTO2 for more info 344 enum 345 { 346 CV_CAP_PROP_GPHOTO2_PREVIEW = 17001, // Capture only preview from liveview mode. 347 CV_CAP_PROP_GPHOTO2_WIDGET_ENUMERATE = 17002, // Readonly, returns (const char *). 348 CV_CAP_PROP_GPHOTO2_RELOAD_CONFIG = 17003, // Trigger, only by set. Reload camera settings. 349 CV_CAP_PROP_GPHOTO2_RELOAD_ON_CHANGE = 17004, // Reload all settings on set. 350 CV_CAP_PROP_GPHOTO2_COLLECT_MSGS = 17005, // Collect messages with details. 351 CV_CAP_PROP_GPHOTO2_FLUSH_MSGS = 17006, // Readonly, returns (const char *). 352 CV_CAP_PROP_SPEED = 17007, // Exposure speed. Can be readonly, depends on camera program. 353 CV_CAP_PROP_APERTURE = 17008, // Aperture. Can be readonly, depends on camera program. 354 CV_CAP_PROP_EXPOSUREPROGRAM = 17009, // Camera exposure program. 355 CV_CAP_PROP_VIEWFINDER = 17010 // Enter liveview mode. 356 }; 357 358 /* retrieve or set capture properties */ 359 CVAPI(double) cvGetCaptureProperty( CvCapture* capture, int property_id ); 360 CVAPI(int) cvSetCaptureProperty( CvCapture* capture, int property_id, double value ); 361 362 // Return the type of the capturer (eg, CV_CAP_V4W, CV_CAP_UNICAP), which is unknown if created with CV_CAP_ANY 363 CVAPI(int) cvGetCaptureDomain( CvCapture* capture); 364 365 /* "black box" video file writer structure */ 366 typedef struct CvVideoWriter CvVideoWriter; 367 368 #define CV_FOURCC_MACRO(c1, c2, c3, c4) (((c1) & 255) + (((c2) & 255) << 8) + (((c3) & 255) << 16) + (((c4) & 255) << 24)) 369 370 CV_INLINE int CV_FOURCC(char c1, char c2, char c3, char c4) 371 { 372 return CV_FOURCC_MACRO(c1, c2, c3, c4); 373 } 374 375 #define CV_FOURCC_PROMPT -1 /* Open Codec Selection Dialog (Windows only) */ 376 #define CV_FOURCC_DEFAULT CV_FOURCC('I', 'Y', 'U', 'V') /* Use default codec for specified filename (Linux only) */ 377 378 /* initialize video file writer */ 379 CVAPI(CvVideoWriter*) cvCreateVideoWriter( const char* filename, int fourcc, 380 double fps, CvSize frame_size, 381 int is_color CV_DEFAULT(1)); 382 383 /* write frame to video file */ 384 CVAPI(int) cvWriteFrame( CvVideoWriter* writer, const IplImage* image ); 385 386 /* close video file writer */ 387 CVAPI(void) cvReleaseVideoWriter( CvVideoWriter** writer ); 388 389 /****************************************************************************************\ 390 * Obsolete functions/synonyms * 391 \****************************************************************************************/ 392 393 #define cvCaptureFromFile cvCreateFileCapture 394 #define cvCaptureFromCAM cvCreateCameraCapture 395 #define cvCaptureFromAVI cvCaptureFromFile 396 #define cvCreateAVIWriter cvCreateVideoWriter 397 #define cvWriteToAVI cvWriteFrame 398 399 /** @} videoio_c */ 400 401 #ifdef __cplusplus 402 } 403 #endif 404 405 #endif //__OPENCV_VIDEOIO_H__ 406