Changes between Version 30 and Version 31 of rfc24_progressive_data_support

Timestamp:

Aug 28, 2008, 8:50:33 AM (16 years ago)

Author:

normanb

Comment:

--

rfc24_progressive_data_support

@@ -23 +23 @@
 == Implementation ==
 
-The implementation is a definition of an interface, in particular an overloaded function definition for RasterIO.  Concrete implementations of this interface will follow.  Currently the most convenient JPIP streaming developer library is [http://www.kakadusoftware.com Kakadu] however since GDAL is also developer library, only stubs can be distributed to conform to Kakadu licensing ([http://trac.osgeo.org/gdal/wiki/JP2KAK JP2KAK]).  Commercial vendors are also interested in using GDAL for streaming support and a standard interface will allow these commercial plugins to be incorporated. e.g. [http://www.gdal.org/frmt_jp2ecw.html ECW], [http://www.gdal.org/frmt_mrsid.html MrSID].
+The implementation is a definition of an interface for streaming support data support within GDAL. Concrete implementations of this interface will follow.  Currently the most convenient JPIP streaming developer library is [http://www.kakadusoftware.com Kakadu] however since GDAL is also developer library, only stubs can be distributed to conform to Kakadu licensing ([http://trac.osgeo.org/gdal/wiki/JP2KAK JP2KAK]).  Commercial vendors are also interested in using GDAL for streaming support and a standard interface will allow these commercial plugins to be incorporated. e.g. [http://www.gdal.org/frmt_jp2ecw.html ECW], [http://www.gdal.org/frmt_mrsid.html MrSID].
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+The implementation will use asynchronous queues to support asynchronous communication between threads. To support reading streaming data from a progressive server it will be necessary to communicate between different threads.  In general it's safer not to do this by shared memory, but by explicit message passing. e.g. [http://library.gnome.org/devel/glib/2.12/glib-Asynchronous-Queues.html Glib Asynchronous Queues]
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