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Class TunaIPReceiver

Description

Hierarchy

Fields

Methods

Properties

Unit

unaIPStreaming

Declaration

type TunaIPReceiver = class(unaIPStreamer)

Description

Basic IP receiving class.

Hierarchy

tComponent
unavclInOutPipe
unaIPStreamer
TunaIPReceiver

Overview

Methods

	`function doGetRTCP(): unaRTCPstack; override;`
	`function doOpen(): bool; override;`
	`function doWrite(_data: pointer; _len: uint; provider: pointer = nil): uint; override;`
	`function isActive(): bool; override;`
	`function onNewData(_data: pointer; _len: uint; provider: pointer = nil): bool; override;`
	`procedure AfterConstruction(); override;`
	`procedure BeforeDestruction(); override;`
	`procedure doClose(); override;`
	`procedure needHoles(st: int; const host, portRTP: string; const portRTCP: string = ''); override;`
	`procedure onFormatChange(rate, channels, bits, encoding, bitrate: int); override;`
	`procedure onNewText(data: pointer; len: int); virtual;`
	`procedure onRTPHdr(hdr: prtp_hdr; data: pointer; len: int); virtual;`
	`procedure rtspGotError(const uri, control: string; req: int; errorCode: HRESULT); virtual;`
	`procedure rtspGotResponse(const uri, control: string; req: int; response: unaHTTPparser); virtual;`
	`procedure setupSessionParams(); override;`

Properties

	`property CNresendInterval: int read getCNRI write setCNRI default c_def_CNresendInterval;`
	`property mpegTS_demuxer: unaMpegTSDemuxer read getDemuxer;`
	`property onAfterDecodeWrite: unavcIPDataWrite read f_onAfterDecodeWrite write f_onAfterDecodeWrite;`
	`property onBeforeDecodeWrite: unavcIPDataWrite read f_onBeforeDecodeWrite write f_onBeforeDecodeWrite;`
	`property onRTPHeader: unavcIPReceiverRTPHdr read f_onRTPHdr write f_onRTPHdr;`
	`property onText: unavcIPReceiverTextEvent read f_onText write f_onText;`
	`property rec: unaRTPReceiver read f_receiverRTP;`
	`property reconnectIfNoData: boolean read f_rifnd write f_rifnd default true;`
	`property STUNserver;`
	`property URI;`

Description

Methods

	`function doGetRTCP(): unaRTCPstack; override;`
Returns internal RTCP stack object.

	`function doOpen(): bool; override;`
Creates and opens internal receiver/decoder classes.

	`function doWrite(_data: pointer; _len: uint; provider: pointer = nil): uint; override;`
Passes compressed data to decoders according to encoding property.

function isActive(): bool; override;

Returns component's active state.

Returns

True if component was activated succesfully.

function onNewData(_data: pointer; _len: uint; provider: pointer = nil): bool; override;

Processes new data available from the pipe.

Returns

True if successfull.

	`procedure AfterConstruction(); override;`
Creates encoders and decoders for receiver

	`procedure BeforeDestruction(); override;`
Disposes receivers, encoders and decoders

	`procedure doClose(); override;`
Closes the receiver.

	`procedure needHoles(st: int; const host, portRTP: string; const portRTCP: string = ''); override;`
Sends RTCP and RTP packets to remote side to make holes in NAT

	`procedure onFormatChange(rate, channels, bits, encoding, bitrate: int); override;`
Applies new format on decoders.

	`procedure onNewText(data: pointer; len: int); virtual;`
Fired when new portion of text is received from remote side.

	`procedure onRTPHdr(hdr: prtp_hdr; data: pointer; len: int); virtual;`
Fired when new RTP header is received.

	`procedure rtspGotError(const uri, control: string; req: int; errorCode: HRESULT); virtual;`
RTSP error

	`procedure rtspGotResponse(const uri, control: string; req: int; response: unaHTTPparser); virtual;`
RTSP response

	`procedure setupSessionParams(); override;`
Applies required changes on RTCP object.

Properties

	`property CNresendInterval: int read getCNRI write setCNRI default c_def_CNresendInterval;`
Resend interval for CN packets.

	`property mpegTS_demuxer: unaMpegTSDemuxer read getDemuxer;`
MPEG TS demuxer.

	`property onAfterDecodeWrite: unavcIPDataWrite read f_onAfterDecodeWrite write f_onAfterDecodeWrite;`
Fired when data is decoded and is about to be passed to consumer(s)

	`property onBeforeDecodeWrite: unavcIPDataWrite read f_onBeforeDecodeWrite write f_onBeforeDecodeWrite;`
Fired before data received from network is about to be passed to decoders.

	`property onRTPHeader: unavcIPReceiverRTPHdr read f_onRTPHdr write f_onRTPHdr;`
Fired when new RTP packet is received.

	`property onText: unavcIPReceiverTextEvent read f_onText write f_onText;`
Fired when new text is received.

	`property rec: unaRTPReceiver read f_receiverRTP;`
Low-level RTP receiver.

	`property reconnectIfNoData: boolean read f_rifnd write f_rifnd default true;`
Reconnects to remote stream if no data is received for some time.

	`property STUNserver;`
RTSP client should use it

property URI;

Possible values:

– RAW – udp://192.168.0.10:7654 - receive RAW unicast stream (set SDP to specify stream format) 192.168.0.10 - remote address 7654 - remote port

udp://224.0.1.2:7654 - receive RAW multicast stream (set SDP to specify stream format) 224.0.1.2 - join this multicast group 7654 - communicate on this port

tcp://192.168.0.170:5008 - RAW unicast TCP stream 192.168.0.170 - remote server address 5008 - remote server port

– RTP – rtp://192.168.0.12:1254 - receive RTP unicast stream (may need additional SDP in case of dynamic payload) 192.168.0.12 - use this IP for streaming 1254 - use this port for RTP (1255 will be used for RTCP)

rtp://224.0.1.2:1254 - receive RTP multicast stream (may need additional SDP in case of dynamic payload) 224.0.1.2 - join this multicast group 1254 - communicate on this port

– RTSP – rtsp://192.168.0.170/ - use RTSP streaming negotiation (check SDP for details) 192.168.0.170 - connect to this host for RTSP server Default port is 554

– SHOUTcast – http://87.98.132.103:8230 - receive SHOUTcast stream 87.98.132.103 - connect to this host for SHOUTcast stream 8230 - use this port for communication

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