uvc_cam.h
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00001 // The uvc_cam package provides a simple interface to webcams visible through
00002 // the uvcvideo driver. It includes code adapted from 'guvcview', which in
00003 // turn adapted some code from 'luvcview'.
00004 // Copyright (C) 2009 Morgan Quigley
00005 //
00006 // This program is free software; you can redistribute it and/or
00007 // modify it under the terms of the GNU General Public License
00008 // as published by the Free Software Foundation; either version 2
00009 // of the License, or (at your option) any later version.
00010 
00011 // This program is distributed in the hope that it will be useful,
00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 // GNU General Public License for more details.
00015 
00016 // You should have received a copy of the GNU General Public License
00017 // along with this program; if not, write to the Free Software
00018 // Foundation, Inc.,
00019 // 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
00021 
00022 #ifndef UVC_CAM_H
00023 #define UVC_CAM_H
00024 
00025 #include <string>
00026 #include <libv4l2.h>
00027 #include <linux/videodev2.h>
00028 
00029 #include <stdint.h>
00030 
00031 namespace uvc_cam
00032 {
00033 
00034 enum v4l2_uvc_exposure_auto_type
00035 {
00036         V4L2_UVC_EXPOSURE_MANUAL = 1,
00037         V4L2_UVC_EXPOSURE_AUTO = 2,
00038         V4L2_UVC_EXPOSURE_SHUTTER_PRIORITY = 4,
00039         V4L2_UVC_EXPOSURE_APERTURE_PRIORITY = 8
00040 };
00041 
00042 
00043 static const int exp_vals[]=
00044 {
00045         V4L2_UVC_EXPOSURE_MANUAL,
00046         V4L2_UVC_EXPOSURE_AUTO,
00047         V4L2_UVC_EXPOSURE_SHUTTER_PRIORITY,
00048         V4L2_UVC_EXPOSURE_APERTURE_PRIORITY
00049 };
00050 
00051 
00052 
00053 #define CSU32 const static uint32_t
00054 
00055 class Cam
00056 {
00057 public:
00058   enum mode_t { MODE_RGB, MODE_MJPG, MODE_YUYV } mode;
00059   Cam(const char *device, mode_t _mode = MODE_RGB,
00060       int _width = 640, int _height = 480, int _fps = 30);
00061   ~Cam();
00062   static void enumerate();
00063   int grab(unsigned char **frame, uint32_t &bytes_used);
00064   void release(unsigned buf_idx);
00065   bool set_auto_white_balance(bool on);
00066   void set_motion_thresholds(int lum, int count);
00067   void set_control(uint32_t id, int val);
00068   bool v4l2_query(int id, const std::string& name);
00069   bool set_v4l2_control(int id, int value, const std::string& name);
00070 private:
00071   std::string device;
00072   int fd, motion_threshold_luminance, motion_threshold_count;
00073   unsigned width, height, fps;
00074   v4l2_format fmt;
00075   v4l2_capability cap;
00076   v4l2_streamparm streamparm;
00077   v4l2_requestbuffers rb;
00078   v4l2_buffer buf;
00079   v4l2_timecode timecode;
00080   static const unsigned NUM_BUFFER = 2;
00081   void *mem[NUM_BUFFER];
00082   unsigned buf_length;
00083   unsigned char *rgb_frame, *last_yuv_frame;
00084 
00085   /*------------------------- new camera class controls ---------------------*/
00086   CSU32 V4L2_CTRL_CLASS_USER_NEW = 0x00980000;
00087   CSU32 V4L2_CID_BASE_NEW = V4L2_CTRL_CLASS_USER_NEW | 0x900;
00088   CSU32 V4L2_CID_POWER_LINE_FREQUENCY_NEW = V4L2_CID_BASE_NEW + 24;
00089   CSU32 V4L2_CID_HUE_AUTO_NEW = V4L2_CID_BASE_NEW + 25;
00090   CSU32 V4L2_CID_WHITE_BALANCE_TEMPERATURE_NEW = V4L2_CID_BASE_NEW + 26;
00091   CSU32 V4L2_CID_SHARPNESS_NEW = V4L2_CID_BASE_NEW + 27;
00092   CSU32 V4L2_CID_BACKLIGHT_COMPENSATION_NEW = V4L2_CID_BASE_NEW + 28;
00093   CSU32 V4L2_CID_LAST_NEW = V4L2_CID_BASE_NEW + 29;
00094 
00095   CSU32 V4L2_CTRL_CLASS_CAMERA_NEW = 0x009A0000;        /* Camera class controls */
00096   CSU32 V4L2_CID_CAMERA_CLASS_BASE_NEW = V4L2_CTRL_CLASS_CAMERA_NEW | 0x900;
00097   CSU32 V4L2_CID_EXPOSURE_AUTO_NEW = V4L2_CID_CAMERA_CLASS_BASE_NEW + 1;
00098   CSU32 V4L2_CID_EXPOSURE_ABSOLUTE_NEW = V4L2_CID_CAMERA_CLASS_BASE_NEW + 2;
00099   CSU32 V4L2_CID_EXPOSURE_AUTO_PRIORITY_NEW = V4L2_CID_CAMERA_CLASS_BASE_NEW+3;
00100   CSU32 V4L2_CID_PAN_RELATIVE_NEW = V4L2_CID_CAMERA_CLASS_BASE_NEW + 4;
00101   CSU32 V4L2_CID_TILT_RELATIVE_NEW = V4L2_CID_CAMERA_CLASS_BASE_NEW + 5;
00102   CSU32 V4L2_CID_PAN_RESET_NEW = V4L2_CID_CAMERA_CLASS_BASE_NEW + 6;
00103   CSU32 V4L2_CID_TILT_RESET_NEW = V4L2_CID_CAMERA_CLASS_BASE_NEW + 7;
00104   CSU32 V4L2_CID_PAN_ABSOLUTE_NEW = V4L2_CID_CAMERA_CLASS_BASE_NEW + 8;
00105   CSU32 V4L2_CID_TILT_ABSOLUTE_NEW = V4L2_CID_CAMERA_CLASS_BASE_NEW + 9;
00106   CSU32 V4L2_CID_FOCUS_ABSOLUTE_NEW = V4L2_CID_CAMERA_CLASS_BASE_NEW + 10;
00107   CSU32 V4L2_CID_FOCUS_RELATIVE_NEW = V4L2_CID_CAMERA_CLASS_BASE_NEW + 11;
00108   CSU32 V4L2_CID_FOCUS_AUTO_NEW = V4L2_CID_CAMERA_CLASS_BASE_NEW + 12;
00109   CSU32 V4L2_CID_CAMERA_CLASS_LAST = V4L2_CID_CAMERA_CLASS_BASE_NEW + 13;
00110 
00111   /*--------------- old private class controls ------------------------------*/
00112   CSU32 V4L2_CID_PRIVATE_BASE_OLD = 0x08000000;
00113   CSU32 V4L2_CID_BACKLIGHT_COMPENSATION_OLD = V4L2_CID_PRIVATE_BASE_OLD + 0;
00114   CSU32 V4L2_CID_POWER_LINE_FREQUENCY_OLD = V4L2_CID_PRIVATE_BASE_OLD + 1;
00115   CSU32 V4L2_CID_SHARPNESS_OLD = V4L2_CID_PRIVATE_BASE_OLD + 2;
00116   CSU32 V4L2_CID_HUE_AUTO_OLD = V4L2_CID_PRIVATE_BASE_OLD + 3;
00117   CSU32 V4L2_CID_FOCUS_AUTO_OLD = V4L2_CID_PRIVATE_BASE_OLD + 4;
00118   CSU32 V4L2_CID_FOCUS_ABSOLUTE_OLD = V4L2_CID_PRIVATE_BASE_OLD + 5;
00119   CSU32 V4L2_CID_FOCUS_RELATIVE_OLD = V4L2_CID_PRIVATE_BASE_OLD + 6;
00120   CSU32 V4L2_CID_PAN_RELATIVE_OLD = V4L2_CID_PRIVATE_BASE_OLD + 7;
00121   CSU32 V4L2_CID_TILT_RELATIVE_OLD = V4L2_CID_PRIVATE_BASE_OLD + 8;
00122   CSU32 V4L2_CID_PANTILT_RESET_OLD = V4L2_CID_PRIVATE_BASE_OLD + 9;
00123   CSU32 V4L2_CID_EXPOSURE_AUTO_OLD = V4L2_CID_PRIVATE_BASE_OLD + 10;
00124   CSU32 V4L2_CID_EXPOSURE_ABSOLUTE_OLD = V4L2_CID_PRIVATE_BASE_OLD + 11;
00125   CSU32 V4L2_CID_WHITE_BALANCE_TEMP_AUTO_OLD    = V4L2_CID_PRIVATE_BASE_OLD+12;
00126   CSU32 V4L2_CID_WHITE_BALANCE_TEMP_OLD = V4L2_CID_PRIVATE_BASE_OLD + 13;
00127   CSU32 V4L2_CID_PRIVATE_LAST = V4L2_CID_WHITE_BALANCE_TEMP_OLD + 1;
00128   // dynamic controls
00129   CSU32 UVC_CTRL_DATA_TYPE_RAW = 0;
00130   CSU32 UVC_CTRL_DATA_TYPE_SIGNED       = 1;
00131   CSU32 UVC_CTRL_DATA_TYPE_UNSIGNED     = 2;
00132   CSU32 UVC_CTRL_DATA_TYPE_BOOLEAN = 3;
00133   CSU32 UVC_CTRL_DATA_TYPE_ENUM = 4;
00134   CSU32 UVC_CTRL_DATA_TYPE_BITMASK = 5;
00135   CSU32 V4L2_CID_BASE_EXTCTR = 0x0A046D01;
00136   CSU32 V4L2_CID_BASE_LOGITECH = V4L2_CID_BASE_EXTCTR;
00137   //CSU32 V4L2_CID_PAN_RELATIVE_LOGITECH = V4L2_CID_BASE_LOGITECH;
00138   //CSU32 V4L2_CID_TILT_RELATIVE_LOGITECH = V4L2_CID_BASE_LOGITECH + 1;
00139   CSU32 V4L2_CID_PANTILT_RESET_LOGITECH = V4L2_CID_BASE_LOGITECH + 2;
00140   CSU32 V4L2_CID_FOCUS_LOGITECH = V4L2_CID_BASE_LOGITECH + 3;
00141   CSU32 V4L2_CID_LED1_MODE_LOGITECH = V4L2_CID_BASE_LOGITECH + 4;
00142   CSU32 V4L2_CID_LED1_FREQUENCY_LOGITECH = V4L2_CID_BASE_LOGITECH + 5;
00143   CSU32 V4L2_CID_DISABLE_PROCESSING_LOGITECH = V4L2_CID_BASE_LOGITECH + 0x70;
00144   CSU32 V4L2_CID_RAW_BITS_PER_PIXEL_LOGITECH = V4L2_CID_BASE_LOGITECH + 0x71;
00145   CSU32 V4L2_CID_LAST_EXTCTR = V4L2_CID_RAW_BITS_PER_PIXEL_LOGITECH;
00146 
00147 };
00148 
00149 }
00150 
00151 #endif
00152 


uvc_camera
Author(s): Ken Tossell
autogenerated on Sun Oct 5 2014 22:47:18