afQuery queries the capabilities of the Audio File Library.

SYNOPSIS
#include <audiofile.h>

AUpvlist afQuery (int querytype, int arg1, int arg2, int arg3, int arg4);
long afQueryLong (int querytype, int arg1, int arg2, int arg3, int arg4);
double afQueryDouble (int querytype, int arg1, int arg2, int arg3, int arg4);
void *afQueryPointer (int querytype, int arg1, int arg2, int arg3, int arg4);

PARAMETERS
querytype can be one of
AF_QUERYTYPE_FILEFMT
AF_QUERYTYPE_INST
AF_QUERYTYPE_INSTPARAM
AF_QUERYTYPE_COMPRESSION
AF_QUERYTYPE_COMPRESSIONPARAM
AF_QUERYTYPE_MISC
AF_QUERYTYPE_MARK
AF_QUERYTYPE_LOOP

ERRORS
afQuery can produce the following errors:
* AF_BAD_QUERYTYPE - the query type is unsupported
* AF_BAD_QUERY - the arguments to the query are bad
