DShowCB Class Reference
[Videosource: Video acquisition abstraction]
#include <dshowcb.h>
Public Member Functions | |
| virtual bool | initialize () |
| initialized the video source. | |
| virtual bool | getFrame (IplImage *dst) |
| get the next frame and convert it to the format described in "dst". | |
| virtual void | getSize (int &width, int &height) |
| return width and height of images coming from the video source. | |
| DShowCB () | |
| virtual | ~DShowCB () |
| virtual void | start () |
| Start the video source: getFrame() will provide each time a different image. | |
| virtual void | stop () |
| Pause the source. | |
| virtual bool | isPlaying () |
| return false if the source is paused. | |
| virtual int | getId () |
| This method is usefull only for video files, not grabbing hardware. | |
| virtual const char * | getStreamName () const |
| Returns a string describing the stream. | |
| virtual const char * | getStreamType () const |
| Returns a string describing the type of the stream. | |
Detailed Description
Definition at line 13 of file dshowcb.h.
Constructor & Destructor Documentation
| DShowCB::DShowCB | ( | ) |
Definition at line 114 of file dshowcb.cpp.
| DShowCB::~DShowCB | ( | ) | [virtual] |
Definition at line 121 of file dshowcb.cpp.
Member Function Documentation
| bool DShowCB::getFrame | ( | IplImage * | dst | ) | [virtual] |
get the next frame and convert it to the format described in "dst".
The image will be deinterlaced, scaled, and color converted to match dst.
- Parameters:
-
dst the image to copy the frame into.
- Returns:
- true on success, false on error.
Implements VideoSource.
Definition at line 279 of file dshowcb.cpp.
References deinterlaceAndResize(), SampleGrabberCB::event, and SampleGrabberCB::frameWanted.
| virtual int DShowCB::getId | ( | ) | [inline, virtual] |
This method is usefull only for video files, not grabbing hardware.
It returns a the number of the last frame provided by getFrame().
- Returns:
- the unique frame number or -1 if the video source does not support frame counting.
Reimplemented from VideoSource.
| void DShowCB::getSize | ( | int & | width, | |
| int & | height | |||
| ) | [virtual] |
return width and height of images coming from the video source.
Implements VideoSource.
Definition at line 299 of file dshowcb.cpp.
References SampleGrabberCB::Height, and SampleGrabberCB::Width.
| virtual const char* DShowCB::getStreamName | ( | ) | const [inline, virtual] |
Returns a string describing the stream.
If the source comes from a file, the filename is returned.
Implements VideoSource.
| virtual const char* DShowCB::getStreamType | ( | ) | const [inline, virtual] |
Returns a string describing the type of the stream.
For example: BmpFile, AviFile, DShowCB...
Implements VideoSource.
| bool DShowCB::initialize | ( | ) | [virtual] |
initialized the video source.
Has to be called before any other method.
- Returns:
- true on success, false on error.
Implements VideoSource.
Definition at line 128 of file dshowcb.cpp.
References SampleGrabberCB::event, GetInPin(), GetOutPin(), SampleGrabberCB::Height, SampleGrabberCB::image, start(), and SampleGrabberCB::Width.
Referenced by DShowCBFactory::construct().
| virtual bool DShowCB::isPlaying | ( | ) | [inline, virtual] |
| void DShowCB::start | ( | ) | [virtual] |
Start the video source: getFrame() will provide each time a different image.
After calling initialize(), the video source is playing.
Implements VideoSource.
Definition at line 305 of file dshowcb.cpp.
Referenced by initialize().
| void DShowCB::stop | ( | ) | [virtual] |
Pause the source.
The getFrame() method will always provide the current frame.
Implements VideoSource.
Definition at line 311 of file dshowcb.cpp.
The documentation for this class was generated from the following files:
- videosource/dshowcb.h
- videosource/dshowcb.cpp
