C++ (Cpp) afQuery Examples

Example #1

File: query2.c Project: OS2World/LIB-MM-audiofile

void printinstparams (int format)
{
	int	i, *iarray;
	long	instParamCount;

	instParamCount = afQueryLong(AF_QUERYTYPE_INSTPARAM, AF_QUERY_ID_COUNT,
		format, 0, 0);
	DEBG("instrument parameter query: id count: %ld\n", instParamCount);

	iarray = afQueryPointer(AF_QUERYTYPE_INSTPARAM, AF_QUERY_IDS,
		format, 0, 0);

	if (iarray == NULL)
		printf("AF_QUERYTYPE_INSTPARAM failed for format %d\n", format);

	for (i=0; i<instParamCount; i++)
	{
		int		paramType;
		AUpvlist	defaultValue;

		DEBG("instrument parameter query: id: %d\n", iarray[i]);
		paramType = afQueryLong(AF_QUERYTYPE_INSTPARAM,
			AF_QUERY_TYPE, format, iarray[i], 0);

		DEBG("\ttype of parameter: %s\n", paramtypename(paramType));
		DEBG("\tname of parameter: %s\n",
			(char *) afQueryPointer(AF_QUERYTYPE_INSTPARAM,
				AF_QUERY_NAME, format, iarray[i], 0));

		defaultValue = afQuery(AF_QUERYTYPE_INSTPARAM, AF_QUERY_DEFAULT,
			format, iarray[i], 0);

		if (paramType == AU_PVTYPE_LONG)
		{
			long	ldefault;
			AUpvgetval(defaultValue, 0, &ldefault);
			DEBG("\tdefault value: %ld\n", ldefault);
		}
		else if (paramType == AU_PVTYPE_DOUBLE)
		{
			double	ddefault;
			AUpvgetval(defaultValue, 0, &ddefault);
			DEBG("\tdefault value: %f\n", ddefault);
		}
		else if (paramType == AU_PVTYPE_PTR)
		{
			void	*vdefault;
			AUpvgetval(defaultValue, 0, &vdefault);
			DEBG("\tdefault value: %p\n", vdefault);
		}
	}

	free(iarray);
}

Example #2

File: query2.c Project: OS2World/LIB-MM-audiofile

int main (int ac, char **av)
{
	AUpvlist	formatlist;
	int		*flist;
	long		lvalue;
	int		i, formatcount;

	formatlist = afQuery(AF_QUERYTYPE_FILEFMT, AF_QUERY_IDS, 0, 0, 0);
	formatcount = afQueryLong(AF_QUERYTYPE_FILEFMT, AF_QUERY_ID_COUNT, 0, 0, 0);

	DEBG("formatcount = %d\n", formatcount);

	AUpvgetval(formatlist, 0, &flist);
	AUpvfree(formatlist);

	for (i=0; i<formatcount; i++)
	{
		int	format;
		char	*formatstring;

		format = flist[i];
		DEBG("format = %d\n", format);
		formatstring = afQueryPointer(AF_QUERYTYPE_FILEFMT, AF_QUERY_NAME,
			format, 0, 0);
		DEBG("format = %s\n", formatstring);

		lvalue = afQueryLong(AF_QUERYTYPE_INST, AF_QUERY_SUPPORTED,
			format, 0, 0);
		DEBG("instrument query: supported: %ld\n", lvalue);

		lvalue = afQueryLong(AF_QUERYTYPE_INST, AF_QUERY_MAX_NUMBER,
			format, 0, 0);
		DEBG("instrument query: maximum number: %ld\n", lvalue);

		lvalue = afQueryLong(AF_QUERYTYPE_INSTPARAM, AF_QUERY_SUPPORTED,
			format, 0, 0);
		DEBG("instrument parameter query: supported: %ld\n", lvalue);

		/*
			Print instrument parameter information only if
			instrument parameters are supported.
		*/
		if (lvalue)
			printinstparams(format);
	}
	free(flist);

	return 0;
}

Example #3

File: query.cpp Project: Distrotech/audiofile

double afQueryDouble (int querytype, int arg1, int arg2, int arg3, int arg4)
{
	AUpvlist	list;
	int		type;
	double		value;

	list = afQuery(querytype, arg1, arg2, arg3, arg4);
	if (list == AU_NULL_PVLIST)
		return -1;
	AUpvgetvaltype(list, 0, &type);
	if (type != AU_PVTYPE_DOUBLE)
		return -1;
	AUpvgetval(list, 0, &value);
	AUpvfree(list);
	return value;
}

Example #4

File: query.cpp Project: Distrotech/audiofile

void *afQueryPointer (int querytype, int arg1, int arg2, int arg3, int arg4)
{
	AUpvlist	list;
	int		type;
	void		*value;

	list = afQuery(querytype, arg1, arg2, arg3, arg4);
	if (list == AU_NULL_PVLIST)
		return NULL;
	AUpvgetvaltype(list, 0, &type);
	if (type != AU_PVTYPE_PTR)
		return NULL;
	AUpvgetval(list, 0, &value);
	AUpvfree(list);
	return value;
}

Example #5

File: query.cpp Project: Distrotech/audiofile

long afQueryLong (int querytype, int arg1, int arg2, int arg3, int arg4)
{
	AUpvlist	list;
	int		type;
	long		value;

	list = afQuery(querytype, arg1, arg2, arg3, arg4);
	if (list == AU_NULL_PVLIST)
		return -1;
	AUpvgetvaltype(list, 0, &type);
	if (type != AU_PVTYPE_LONG)
		return -1;
	AUpvgetval(list, 0, &value);
	AUpvfree(list);
	return value;
}