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AVISource Class Reference

A class which implements the ImageSource interface as a source of MPEG movie Images. More...

#include <AVISource.h>

Inheritance diagram for AVISource::

List of all members.

Public Methods
	AVISource (char *path)
	Initialise an MPEG movie source. More...
	~AVISource ()
	Close AVI file and free up the memory.
virtual ImageSource&	operator>> (ImageRGB &)
	Extract a frame of the AVI movie to the colour Images data buffer. More...
virtual ImageSource&	operator>> (ImageGrey &)
	Extract a frame of the AVI movie to the greyscale Images brightness buffer. More...
virtual ImageSource&	operator>> (Image &)
	Extract a frame of the AVI movie. More...
void	get_size (unsigned int &, unsigned int &)
	Return the width and height of the MPEG. More...
int	get_no_frames ()
	Get number of frames.
int	set_frame (long frame_no)
	Seek to point in file. More...
void	get_framerate (float &)
	Return the frame rate of the MPEG. More...
bool	eof (void) const
	Test for end of file. More...
Protected Attributes
AVFormatContext*	pFormatCtx
int	i
int	videoStream
AVCodecContext*	pCodecCtx
	codec context for the video stream.
AVCodec*	pCodec
	decoder for the video stream.
AVFrame*	pFrame
	YUV video frame.
AVFrame*	pFrameRGB
int	numBytes
uint8_t*	buffer
unsigned char**	buff
	Buffer for decoded data.
unsigned int	width
	MPEG width.
unsigned int	height
	MPEG height.
long	frames
	Number of frames in movie.
float	framerate
	Frame rate of the movie.

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Detailed Description

A class which implements the ImageSource interface as a source of MPEG movie Images.

Each image that is extracted from the AVISource class is a frame of the MPEG movie.

Note:

Assumes only one stream

Definition at line 30 of file AVISource.h.

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Constructor & Destructor Documentation

AVISource::AVISource ( char * path )

Initialise an MPEG movie source. Parameters: path   The path and filename of the AVI file to use. Definition at line 32 of file AVISource.cpp.

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Member Function Documentation

bool AVISource::eof ( void ) const

Test for end of file. Returns 1 if end of file, 0 otherwise. Definition at line 359 of file AVISource.cpp.

void AVISource::get_framerate ( float & fr_rate )

Return the frame rate of the MPEG. Parameters: framerate   The framerate of the AVI. Definition at line 349 of file AVISource.cpp.

void AVISource::get_size ( unsigned int & w, unsigned int & h ) [virtual]

Return the width and height of the MPEG. Parameters: w   The width of the AVI frame. h   The height of the AVI frame. Reimplemented from ImageSource. Definition at line 325 of file AVISource.cpp.

ImageSource & AVISource::operator>> ( Image & img ) [virtual]

Extract a frame of the AVI movie. The Image could be colour or greyscale depending on the default palette type for this class. Parameters: img   The Image to be extracted to. Reimplemented from ImageSource. Definition at line 304 of file AVISource.cpp.

ImageSource & AVISource::operator>> ( ImageGrey & img ) [virtual]

Extract a frame of the AVI movie to the greyscale Images brightness buffer. Parameters: img   The greyscale Image to be extracted to. Reimplemented from ImageSource. Definition at line 288 of file AVISource.cpp.

ImageSource & AVISource::operator>> ( ImageRGB & img ) [virtual]

Extract a frame of the AVI movie to the colour Images data buffer. Parameters: img   The colour Image to be extracted to. Reimplemented from ImageSource. Definition at line 156 of file AVISource.cpp.

int AVISource::set_frame ( long frame_no )

Seek to point in file. Returns 0 if OK and -1 otherwise. Parameters: frame_no   frame number to set file pointer to Definition at line 337 of file AVISource.cpp.

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The documentation for this class was generated from the following files:

• AVISource.h
• AVISource.cpp
• AVISource.cpp.bak

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