A decorator class which wraps a VideoBuffer to perfrom colourspace conversion on the incoming data. More...
#include <colourspacebuffer.h>
Public Member Functions | |
| ColourspaceBuffer (CVD::VideoBuffer< From > &buf) | |
| virtual RawVideoBuffer * | source_buffer () |
| ImageRef | size () |
| virtual bool | frame_pending () |
| virtual void | seek_to (double t) |
| virtual double | frame_rate () |
|
virtual CVD::ColourspaceFrame < T > * | get_frame () |
| virtual void | put_frame (CVD::VideoFrame< T > *f) |
Detailed Description
template<class T, class From>
class CVD::ColourspaceBuffer< T, From >
A decorator class which wraps a VideoBuffer to perfrom colourspace conversion on the incoming data.
In general, the kernel video buffers such as dvbuffer and v4l1buffer give access to what the device can provide natively. However, the native formats may not be what is required. This buffer transparently converts incoming frames to the required type.
Not every possible conversion is available natively through the library, some conversions have to be performed in several steps. For instance, to convert yuv411 to Rgb<float>, the conversion must go via Rgb<byte> since the conversions from yuv411 are limited.
Provides frames of type CVD::ColourspaceFrame.
This class throws only generic VideoBuffer exceptions, but the underlying videobuffer may throw.
- Parameters:
-
From The pixel type of the original VideoBuffer T The pixel type to convert in to.
Definition at line 52 of file colourspacebuffer.h.
Constructor & Destructor Documentation
| CVD::ColourspaceBuffer< T, From >::ColourspaceBuffer | ( | CVD::VideoBuffer< From > & | buf | ) | [inline] |
Construct a ColourspaceBuffer by wrapping it around another VideoBuffer.
- Parameters:
-
buf The buffer that will provide the raw frames
Definition at line 57 of file colourspacebuffer.h.
Member Function Documentation
| virtual RawVideoBuffer* CVD::ColourspaceBuffer< T, From >::source_buffer | ( | ) | [inline, virtual] |
Which video grabber provides the source images for this video grabber.
Reimplemented from CVD::RawVideoBuffer.
Definition at line 62 of file colourspacebuffer.h.
| virtual bool CVD::ColourspaceBuffer< T, From >::frame_pending | ( | ) | [inline, virtual] |
Is there a frame waiting in the buffer? This function does not block.
See is_live and is_flushable.
Implements CVD::LocalVideoBuffer< T >.
Definition at line 73 of file colourspacebuffer.h.
References CVD::RawVideoBuffer::frame_pending().
| virtual void CVD::ColourspaceBuffer< T, From >::seek_to | ( | double | ) | [inline, virtual] |
Go to a particular point in the video buffer (only implemented in buffers of recorded video)
- Parameters:
-
t The frame time in seconds
Reimplemented from CVD::LocalVideoBuffer< T >.
Definition at line 78 of file colourspacebuffer.h.
References CVD::RawVideoBuffer::seek_to().
| virtual void CVD::ColourspaceBuffer< T, From >::put_frame | ( | CVD::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::LocalVideoBuffer< T >.
Definition at line 100 of file colourspacebuffer.h.
The documentation for this class was generated from the following file:
