About This Manual

Explains how to create plug-in modules for the QuickTime Streaming Server.

What’s New

Version 5.0 of the QTSS programming interface provides the following new features:

These new internal server preferences have been added: disable_thinning , player_requires_rtp_header_info , and player_requires_bandwidth_adjustment .

These new preferences have been added to the QTSSFileModule module for compatibility with 3rd Generation Partnership Project (3GPP) players: compatibility_adjust_sdp_media_bandwidth_percent and enable_player_compatibility .

RTP play information is now enabled by default in the QTSSReflectorModule module. Use the new preference, disable_rtp_play_info to disable RTP Play information. Another new QTSSReflectorModule preference is reflector_rtp_info_offset_msec . For compatibility with 3GPP players, these preferences have also been added to the QTSSReflectorModule module: enable_play_response_range_header , enable_player_compatibility , and force_rtp_info_sequence_and_time .

This new preference has been added to the QTSSFlowControlModule module: flow_control_udp_thinning_module_enabled .

The following changes have been made to existing preferences:

Default size of the QTSSFileModule preference shared_buffer_unit_k_size has been increased from 32 to 64.

Default size of the QTSSFileModule preference private_buffer_unit_k_size has been increased from 32 to 64.

The enable_rtp_play_info preference has been removed from the QTSSReflectorModule module.

The -D command line option has been added to the StreamingServer. When specified, the -D option outputs performance status information.

The file streamingloadtool.conf , installed in /Library/QuickTimeStreaming/Config , has new file tags:

player text , where text is the name of the RTSP player. The information is sent to the server as the UserAgent header.

sendoptions setting , where setting is yes or no . If yes , a Send Options request is made before the DESCRIBE statement.

requestrandomdata setting , where setting is yes or no . Set setting to yes to ask for random data from the server.

randomdatasize setting , where setting is a number from 0 to 262144 that specifies the number of random bytes the server should send.

Conventions Used in This Manual

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Important:

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For More Information

Go to http://www.opensource.apple.com to register as a member of the Apple open source community. Then download the source code for the Darwin Streaming Server at http://www.publicsource.apple.com/projects/streaming . The source code’s Documentation directory contains valuable information:

AboutTheSource.html

DevNotes.html

SourceCodeFAQ.html

The following RFCs provide additional information of interest to developers of QuickTime Streaming Server modules and are available at many locations on the Internet:

RFC 2326, Real Time Streaming Protocol (RTSP)

RFC 1889, RTP: A Transport Protocol for Real-Time Applications

RFC 2327, SDP: Session Description Protocol

RFC 2616, HTTP 1.1

For an overview of the Darwin Streaming Server and links to the latest QuickTime information, go to http://developer.apple.com/darwin/projects/streaming .

Go to http://developer.apple.com/documentation/quicktime for QuickTime developer documentation.

Communicate with other Darwin Streaming Server developers by joining the discussion list at http://lists.apple.com/mailman/listinfo/streaming-server-dev .

See what with other Darwin Streaming Server developers are doing by joining the discussion list at http://lists.apple.com/mailman/listinfo/publicsource-modifications .