C# Class TvLibrary.Implementations.DVB.TvDvbChannel

Base class for all dvb channels

Inheritance: BaseSubChannel, ITeletextCallBack, IPMTCallback, ICACallback, ITvSubChannel, IVideoAudioObserver

显示文件 Open project: MediaPortal/MediaPortal-1 Class Usage Examples

Protected Properties

Property	Type	Description
_channelInfo	TvLibrary.Implementations.DVB.Structures.ChannelInfo
_currentAudioStream	TvLibrary.Implementations.DVB.DVBAudioStream
_eventPMT	System.Threading.ManualResetEvent
_graphBuilder	IFilterGraph2
_mdplugs	TvLibrary.Implementations.DVB.MDPlugs
_pmtData	byte[]
_pmtLength	int
_pmtPid	int
_pmtRequested	bool
_pmtVersion	int
_subChannelIndex	int
_tsFilterInterface	ITsFilter

Public Methods

Method	Description
CancelTune ( ) : void	cancels the tune
GetStreamQualityCounters ( int &totalBytes, int &discontinuityCounter ) : void	Fetches the stream quality information
OnAfterTune ( ) : void	Should be called when the graph is tuned to the new channel resets the state
OnBeforeTune ( ) : void	Should be called before tuning to a new channel resets the state
OnCaReceived ( ) : int	Called when tswriter.ax has received a new ca section
OnGraphStart ( ) : void	Should be called when the graph is about to start Resets the state If graph is already running, starts the pmt grabber to grab the pmt for the new channel
OnGraphStarted ( ) : void	Should be called when the graph has been started. Sets up the PMT grabber to grab the PMT of the channel when the graph hasn't been running previously
OnGraphStop ( ) : void	Should be called when graph is about to stop. stops any timeshifting/recording on this channel
OnGraphStopped ( ) : void	should be called when graph has been stopped Resets the graph state
OnPMTReceived ( int pmtPid ) : int	Called when tswriter.ax has received a new pmt
TvDvbChannel ( ) : System	Initializes a new instance of the TvDvbChannel class.
TvDvbChannel ( IFilterGraph2 graphBuilder, TvLibrary.Implementations.DVB.ConditionalAccess ca, TvLibrary.Implementations.DVB.MDPlugs mdplugs, IBaseFilter tif, IBaseFilter tsWriter, int subChannelId, IChannel channel ) : System	Initializes a new instance of the TvDvbChannel class.

Protected Methods

Method	Description
GraphRunning ( ) : bool	Checks if the graph is running
OnDecompose ( ) : void	disposes this channel
OnGetTimeShiftFilePosition ( System.Int64 &position, long &bufferId ) : void	Returns the position in the current timeshift file and the id of the current timeshift file
OnGrabTeletext ( ) : void	A derrived class should activate or deactivate the teletext grabbing on the tv card.
OnStartRecording ( string fileName ) : void	Starts recording
OnStartTimeShifting ( string fileName ) : bool	sets the filename used for timeshifting
OnStopRecording ( ) : void	Stop recording
OnStopTimeShifting ( ) : void	Stop recording
SendPmtToCam ( bool &updatePids, int &waitInterval ) : bool	Decodes the PMT and sends the PMT to cam.
SetMpegPidMapping ( ChannelInfo info ) : void	maps the correct pids to the TsFileSink filter and teletext pins
SetRecorderPids ( ) : void	Sets the pids for the recorder
SetTimeShiftPids ( ) : void	Sets the pids for the timeshifter
SetupPmtGrabber ( int pmtPid, int serviceId ) : bool	Instructs the ts analyzer filter to start grabbing the PMT
WaitForPMT ( ) : bool	Wait for PMT to be found in the transport stream.

Private Methods

Method	Description
PersistPMTtoDataBase ( int pmtPid ) : void
ThrowExceptionIfTuneCancelled ( ) : void

Method Details

CancelTune() public method

cancels the tune

public CancelTune ( ) : void
return	void

GetStreamQualityCounters() public method

Fetches the stream quality information

public GetStreamQualityCounters ( int &totalBytes, int &discontinuityCounter ) : void
totalBytes	int	Amount of packets processed
discontinuityCounter	int	Number of stream discontinuities
return	void

GraphRunning() protected method

Checks if the graph is running

protected GraphRunning ( ) : bool
return	bool

OnAfterTune() public method

Should be called when the graph is tuned to the new channel resets the state

public OnAfterTune ( ) : void
return	void

OnBeforeTune() public method

Should be called before tuning to a new channel resets the state

public OnBeforeTune ( ) : void
return	void

OnCaReceived() public method

Called when tswriter.ax has received a new ca section

public OnCaReceived ( ) : int
return	int

OnDecompose() protected method

disposes this channel

protected OnDecompose ( ) : void
return	void

OnGetTimeShiftFilePosition() protected method

Returns the position in the current timeshift file and the id of the current timeshift file

protected OnGetTimeShiftFilePosition ( System.Int64 &position, long &bufferId ) : void
position	System.Int64	The position in the current timeshift buffer file
bufferId	long	The id of the current timeshift buffer file
return	void

OnGrabTeletext() protected method

A derrived class should activate or deactivate the teletext grabbing on the tv card.

protected OnGrabTeletext ( ) : void
return	void

OnGraphStart() public method

Should be called when the graph is about to start Resets the state If graph is already running, starts the pmt grabber to grab the pmt for the new channel

public OnGraphStart ( ) : void
return	void

OnGraphStarted() public method

Should be called when the graph has been started. Sets up the PMT grabber to grab the PMT of the channel when the graph hasn't been running previously

public OnGraphStarted ( ) : void
return	void

OnGraphStop() public method

Should be called when graph is about to stop. stops any timeshifting/recording on this channel

public OnGraphStop ( ) : void
return	void

OnGraphStopped() public method

should be called when graph has been stopped Resets the graph state

public OnGraphStopped ( ) : void
return	void

OnPMTReceived() public method

Called when tswriter.ax has received a new pmt

public OnPMTReceived ( int pmtPid ) : int
pmtPid	int
return	int

OnStartRecording() protected method

Starts recording

protected OnStartRecording ( string fileName ) : void
fileName	string	filename to which to recording should be saved
return	void

OnStartTimeShifting() protected method

sets the filename used for timeshifting

protected OnStartTimeShifting ( string fileName ) : bool
fileName	string	timeshifting filename
return	bool

OnStopRecording() protected method

Stop recording

protected OnStopRecording ( ) : void
return	void

OnStopTimeShifting() protected method

Stop recording

protected OnStopTimeShifting ( ) : void
return	void

SendPmtToCam() protected method

Decodes the PMT and sends the PMT to cam.

protected SendPmtToCam ( bool &updatePids, int &waitInterval ) : bool
updatePids	bool
waitInterval	int
return	bool

SetMpegPidMapping() protected method

maps the correct pids to the TsFileSink filter and teletext pins

protected SetMpegPidMapping ( ChannelInfo info ) : void
info	TvLibrary.Implementations.DVB.Structures.ChannelInfo
return	void

SetRecorderPids() protected method

Sets the pids for the recorder

protected SetRecorderPids ( ) : void
return	void

SetTimeShiftPids() protected method

Sets the pids for the timeshifter

protected SetTimeShiftPids ( ) : void
return	void

SetupPmtGrabber() protected method

Instructs the ts analyzer filter to start grabbing the PMT

protected SetupPmtGrabber ( int pmtPid, int serviceId ) : bool
pmtPid	int	pid of the PMT
serviceId	int	The service id.
return	bool

TvDvbChannel() public method

Initializes a new instance of the TvDvbChannel class.

public TvDvbChannel ( ) : System
return	System

TvDvbChannel() public method

Initializes a new instance of the TvDvbChannel class.

public TvDvbChannel ( IFilterGraph2 graphBuilder, TvLibrary.Implementations.DVB.ConditionalAccess ca, TvLibrary.Implementations.DVB.MDPlugs mdplugs, IBaseFilter tif, IBaseFilter tsWriter, int subChannelId, IChannel channel ) : System
graphBuilder	IFilterGraph2	The graph builder.
ca	TvLibrary.Implementations.DVB.ConditionalAccess	The ca.
mdplugs	TvLibrary.Implementations.DVB.MDPlugs	The mdplugs class.
tif	IBaseFilter	The tif filter.
tsWriter	IBaseFilter	The ts writer filter.
subChannelId	int	The subchannel id
channel	IChannel	The corresponding channel
return	System

WaitForPMT() protected method

Wait for PMT to be found in the transport stream.

protected WaitForPMT ( ) : bool
return	bool

Property Details

_channelInfo protected_oe property

Channel Info

protected ChannelInfo,TvLibrary.Implementations.DVB.Structures _channelInfo
return	TvLibrary.Implementations.DVB.Structures.ChannelInfo

_currentAudioStream protected_oe property

Current audio stream

protected DVBAudioStream,TvLibrary.Implementations.DVB _currentAudioStream
return	TvLibrary.Implementations.DVB.DVBAudioStream

_eventPMT protected_oe property

Event that gets signaled when PMT arrives.

protected ManualResetEvent,System.Threading _eventPMT
return	System.Threading.ManualResetEvent

_graphBuilder protected_oe property

The graph builder for the capture card graph.

protected IFilterGraph2 _graphBuilder
return	IFilterGraph2

_mdplugs protected_oe property

MD Plugs

protected MDPlugs,TvLibrary.Implementations.DVB _mdplugs
return	TvLibrary.Implementations.DVB.MDPlugs

_pmtData protected_oe property

PMT data

protected byte[] _pmtData
return	byte[]

_pmtLength protected_oe property

PMT data length

protected int _pmtLength
return	int

_pmtPid protected_oe property

PMT Pid

protected int _pmtPid
return	int

_pmtRequested protected_oe property

Indicates that PMT was grabbed true : requested false: not requested

protected bool _pmtRequested
return	bool

_pmtVersion protected_oe property

PMT version

protected int _pmtVersion
return	int

_subChannelIndex protected_oe property

SubChannel index

protected int _subChannelIndex
return	int

_tsFilterInterface protected_oe property

Ts filter instance

protected ITsFilter _tsFilterInterface
return	ITsFilter