Microsoft DirectX 8.0 (C++) |
The following notation shows the organization of the audiopath form.
RIFF( 'DMAP' [<guid-ck>] // GUID for path [<vers-ck>] // Version information [<UNFO-list>] // Name, author, copyright, comments [<DMTG-form>] // Toolgraph [<pcsl-list>] // Port configurations [<dbfl-list>]... // DirectSound buffer descriptors )
All elements are optional.
For information on these three chunks, see Common Chunks.
See Toolgraph Form.
Information about the configuration of ports is stored in this list.
<pcsl-list> -> LIST( 'pcsl' <pcfl-list>... )
The port configuration list consists of an array of lists in the following format:
LIST( 'pcfl' <pcfh-ck> // Header chunk <pprh-ck> // Port parameters used to create the port [<dbfl-list>]... // DirectSound buffer descriptors [<pchl-list>] // Pchannel-to-buffer assignments )
The port configuration list consists of several chunks, starting with headers describing the port configuration and parameters:
<pcfh-ck> -> pcfh( <DMUS_IO_PORTCONFIG_HEADER> ) <pprh-ck> -> pprh( <DMUS_PORTPARAMS8> )
The optional buffer descriptors are each contained in a chunk with the following format.
<dbfl-list> -> LIST( 'dbfl' <ddah-ck> // Buffer attributes header [<DSBC-form>] // Buffer configuration )
This buffer description list begins with a header describing buffer attributes.
<ddah-ck> -> ( 'ddah' < DMUS_IO_BUFFER_ATTRIBUTES_HEADER > )
The header is followed by an optional DirectSound Buffer Configuration Form. This is not required for standard buffer types.
The final chunk in the port configuration list is a list containing one or more assignments of performance channels to buffers.
pchl-list -> LIST( 'pchl' <pchh-ck>... )
This list consists of an array of chunks, each of which describes one assignment of channels to buffers.
<pchh-ck> -> pchh( <DMUS_IO_PCHANNELTOBUFFER_HEADER> <GUID>... // Array of GUIDs specifying the buffers )
The last part of the audiopath form consists of optional buffer descriptors identical in format to those in the port configuration list, <pcsl-list>.