video_usb_logger module

Log video and pose to USB-stick.

Logs attitude and position to a csv and images to jpeg files (only for linux).

Example for airframe file

Add to your firmware section: This example contains all possible configuration options, not all of them are mandatory!

<module name="video_usb_logger">
  b'<define name="VIDEO_USB_LOGGER_PATH" />\n    '
  b'<define name="VIDEO_USB_LOGGER_CAMERA" value="front_camera|bottom_camera" />\n    '
  b'<define name="VIDEO_USB_LOGGER_WIDTH" value="272" />\n    '
  b'<define name="VIDEO_USB_LOGGER_HEIGHTH" value="272" />\n    '
  b'<define name="VIDEO_USB_LOGGER_JPEG_WITH_EXIF_HEADER" value="TRUE" />\n    '
  b'<define name="VIDEO_USB_LOGGER_FPS" value="0" />\n  '
</module>

Module configuration options

Define Options

• name: VIDEO_USB_LOGGER_PATH value: None
  Description: Logging path
• name: VIDEO_USB_LOGGER_CAMERA value: front_camera|bottom_camera
  Description: Video device to log
• name: VIDEO_USB_LOGGER_WIDTH value: 272
  Description: Size of the to log images
• name: VIDEO_USB_LOGGER_HEIGHTH value: 272
  Description: Size of the to log images
• name: VIDEO_USB_LOGGER_JPEG_WITH_EXIF_HEADER value: TRUE
  Description: Whether to store data in the exif header or not
• name: VIDEO_USB_LOGGER_FPS value: 0
  Description: The (maximum) frequency to run the calculations at. If zero, it will max out at the camera frame rate

Module functions

Periodic Functions

These functions are called periodically at the specified frequency from the module periodic loop.

• video_usb_logger_periodic()
  • Running at maximum module frequency.
  • Autorun: TRUE
    Periodic function automatically starts after init.
  • Start function: video_usb_logger_start()
    Executed before the periodic function starts.
  • Stop function: video_usb_logger_stop()
    Executed after the periodic function stops.

Files

Header Files

The following headers are automatically included in modules.h

• video_usb_logger.h

Source Files

• modules/computer_vision/video_usb_logger.c

Raw video_usb_logger.xml file:

<!DOCTYPE module SYSTEM "module.dtd">
 
<module name="video_usb_logger" dir="computer_vision">
  <doc>
    <description>
      Log video and pose to USB-stick.
      Logs attitude and position to a csv and images to jpeg files (only for linux).
    </description>
    <define name="VIDEO_USB_LOGGER_PATH" description="Logging path"/>
    <define name="VIDEO_USB_LOGGER_CAMERA" value="front_camera|bottom_camera" description="Video device to log"/>
    <define name="VIDEO_USB_LOGGER_WIDTH" value="272" description="Size of the to log images"/>
    <define name="VIDEO_USB_LOGGER_HEIGHTH" value="272" description="Size of the to log images"/>
    <define name="VIDEO_USB_LOGGER_JPEG_WITH_EXIF_HEADER" value="TRUE" description="Whether to store data in the exif header or not"/>
    <define name="VIDEO_USB_LOGGER_FPS" value="0" description="The (maximum) frequency to run the calculations at. If zero, it will max out at the camera frame rate"/>
  </doc>
  <dep>
    <depends>video_thread,pose_history</depends>
  </dep>
  <header>
    <file name="video_usb_logger.h"/>
  </header>
 
  <periodic fun="video_usb_logger_periodic()" start="video_usb_logger_start()" stop="video_usb_logger_stop()" autorun="TRUE"/>
  <makefile target="ap">
    <file name="video_usb_logger.c"/>
  </makefile>
</module>