This class in analogous to the Connection class in live streams. More...

Collaboration diagram for FileStream:

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Public Member Functions
	FileStream (FileContext &ctx)
	Default constructor. More...

	~FileStream ()
	Default destructor. More...

SlotNumber	getSlot ()

void	setRefMstime (long int ms_streamtime_)
	Creates a correspondence with the current wallclock time and a desider stream time, by calculating FileStream::reftime. See Presention timing and playing.

void	seek (long int ms_streamtime_)
	Seek to a desider stream time.

void	play ()
	Start playing the stream.

void	stop ()
	Stop playing the strem.

long int	update (long int mstimestamp)
	Tries to achieve mstimestamp: calculates FileStream::target_mstimestamp_ and calls pullNextFrame. Returns the timeout for the next frame.

long int	pullNextFrame ()
	Tries to achieve FileStream::target_mstimestamp_ . Sends frames whose timestamps are less than that to the filterchain (e.g. to FileContext::framefilter). Returns timeout to the next frame. More...

Public Attributes
FileContext &	ctx
	FileContext describing this stream.

AVFormatContext *	input_context

std::vector< AVBitStreamFilterContext * >	filters

SetupFrame	setupframe
	Setup frame written to the filterchain.

BasicFrame	out_frame
	This frame is written to the filterchain (i.e. to FileStream::ctx and there to FileContext::framefilter)

long int	duration
	Duration of the stream.

long int	reftime
	Relation between the stream time and wallclock time. See Presention timing and playing.

long int	target_mstimestamp_
	Where the stream would like to be (underscore means stream time)

long int	frame_mstimestamp_
	Timestamp of previous frame sent, -1 means there was no previous frame (underscore means stream time)

FileState	state
	Decribes the FileStream state: errors, stopped, playing, etc.

AVPacket *	avpkt
	Data for the next frame in ffmpeg AVPacket format.

Detailed Description

This class in analogous to the Connection class in live streams.

Instances of this class are placed in slots in FileThread.

This class "keeps the books" for each file stream, in particular:

In variable names, underscore means stream time. See Presention timing and playing

Constructor & Destructor Documentation

FileStream::FileStream ( FileContext & ctx )

Default constructor.

Parameters

ctx	: A FileContext instance describing the stream

FileStream::~FileStream ( )

Default destructor.

long int FileStream::pullNextFrame ( )

Tries to achieve FileStream::target_mstimestamp_ . Sends frames whose timestamps are less than that to the filterchain (e.g. to FileContext::framefilter). Returns timeout to the next frame.

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