Video input sources

The Video Capture Manager supports the querying of the available capture sources.

(/dev/vcap-mgr/video_ins) The list of drivers and their corresponding status that the Video Capture manager can be accessed by clients by one of the following ways:

• calling read()

  For example:

  ...
  int fd;
  int size_read;
  char buffer[80];
  
  /* Open a file for input */
  fd = open( "/dev/vcap-mgr/video_ins", O_RDONLY );
  
  /* Read the text */
  size_read = read( fd, buffer, sizeof( buffer ) );
  if( size_read == -1 ) {
      perror( "Error /dev/vcap-mgr/video_ins" );
      return EXIT_FAILURE;
  }
  close(fd);
  ...
   			

• use the ls and cat commands from your shell

  For example:

  # ls /dev/vcap-mgr/video_ins
  right_front rearview
  
  # cat /dev/vcap-mgr/video_ins/rearview
  driver = libcapture-board-imx8x-nxp.so 
  device = 0 
  source = 0 
  label = rearview
  enable = 1 
  nbufs = 6 
  buf_size = 1280 x 720 
  buf_format = 15
  CAPTURE_PROPERTY_DST_FORMAT = 15 
  CAPTURE_PROPERTY_DST_WIDTH = 1280 
  CAPTURE_PROPERTY_DST_HEIGHT = 720 
  CAPTURE_PROPERTY_SRC_WIDTH = 1280 
  CAPTURE_PROPERTY_SRC_HEIGHT = 720