[directmusic] DirectX 9 Audio Book and RIFF formats (sequence tracks)

  • From: "Robert Schmid" <stepha@xxxxxxxxx>
  • To: <directmusic@xxxxxxxxxxxxx>
  • Date: Wed, 7 Jan 2004 22:29:14 -0500

Having purchased and read DirectX 9 Audio Exposed (which helped greatly), and 
delving into the RIFF format with some RIFF-reading C++ code, does anyone know 
what the Sequence track section LIST named 'psql' is for?  Most of the RIFF 
structures are in the SDK help files, but 'psql' is nowhere to be found - 
there, or on Google.  
This list also has two subchunks labeled 'psqc' and 'cvau'.  Are these needed 
for a Segment to play properly?  What do they hold?  What are the formats?

I am attempting to use IStream and IPersistStream to dynamically write notes to 
a sequence track (using Todor Fay's suggestion from an earlier post).

Any additional information on the sequence RIFF format would be much 
appreciated (or a pointer to where such information exists).

Thanks very much,


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