A video buffer from a v4l1 video device. More...
#include <v4l1buffer.h>
Inheritance diagram for CVD::V4L1Buffer< T >:
Public Member Functions | |
| V4L1Buffer (const std::string &dev) | |
| V4L1Buffer (const std::string &dev, ImageRef size) | |
| virtual ImageRef | size () |
| virtual VideoFrame< T > * | get_frame () |
| virtual void | put_frame (VideoFrame< T > *f) |
| virtual bool | frame_pending () |
| virtual double | frame_rate () |
Detailed Description
template<class T>
class CVD::V4L1Buffer< T >
A video buffer from a v4l1 video device.
- Parameters:
-
T The pixel type of the frames. The supported type are <CVD::byte>which returns 8-bit grey scale and<CVD::bayer>which returns an 8-bit grey scale image containing the raw intensities of the sensor. You have to convert the returned image to a byte image or something else to use it in a meaningful way.<CVD::Rgb<CVD::byte> >should work to but crashes with my current driver ?! The pixel type used will automatically configure the underlying RawV4L1 object to use the right video palette.
- Note:
- The grey images are returned upside down unless the kernel module is loaded with the option flipvert.
- frame_rate currently returns fixed 30 fps and frame_pending is untested.
Definition at line 190 of file v4l1buffer.h.
Constructor & Destructor Documentation
template<class T >
| CVD::V4L1Buffer< T >::V4L1Buffer | ( | const std::string & | dev | ) | [inline] |
Construct a video buffer.
- Parameters:
-
dev file name of the device to use
Definition at line 195 of file v4l1buffer.h.
template<class T >
| CVD::V4L1Buffer< T >::V4L1Buffer | ( | const std::string & | dev, |
| ImageRef | size | ||
| ) | [inline] |
Construct a video buffer.
- Parameters:
-
dev file name of the device to use size Size of the video stream to grab
Definition at line 203 of file v4l1buffer.h.
Member Function Documentation
template<class T >
| virtual void CVD::V4L1Buffer< T >::put_frame | ( | VideoFrame< T > * | f | ) | [inline, virtual] |
Tell the buffer that you are finished with this frame.
Typically the VideoBuffer then destroys the frame.
- Parameters:
-
f The frame that you are finished with.
Implements CVD::VideoBuffer< T >.
Definition at line 216 of file v4l1buffer.h.
References CVD::SubImage< T >::data().
The documentation for this class was generated from the following file:
- cvd/Linux/v4l1buffer.h
