C++ (Cpp) AFfilehandle::checkCanWrite示例

示例#1

文件： Marker.cpp 项目： CarCode/Cocoa-OCPN

void afSetMarkPosition (AFfilehandle file, int trackid, int markid,
	AFframecount position)
{
	if (!_af_filehandle_ok(file))
		return;

	if (!file->checkCanWrite())
		return;

	Track *track = file->getTrack(trackid);
	if (!track)
		return;

	Marker *marker = track->getMarker(markid);
	if (!marker)
		return;

	if (position < 0)
	{
#ifdef __WXOSX__
        _af_error(AF_BAD_MARKPOS, "invalid marker position %jd",
#else
		_af_error(AF_BAD_MARKPOS, "invalid marker position %"PRId64,
#endif
			static_cast<intmax_t>(position));
		position = 0;
	}

示例#2

文件： Instrument.cpp 项目： AlexandreRio/weatherfax_pi

/*
	This routine checks and sets instrument parameters.
	npv is number of valid AUpvlist pairs.
*/
void _af_instparam_set (AFfilehandle file, int instid, AUpvlist pvlist, int npv)
{
	if (!_af_filehandle_ok(file))
		return;

	if (!file->checkCanWrite())
		return;

	Instrument *instrument = file->getInstrument(instid);
	if (!instrument)
		return;

	if (AUpvgetmaxitems(pvlist) < npv)
	npv = AUpvgetmaxitems(pvlist);

	for (int i=0; i < npv; i++)
	{
		int	param;

		AUpvgetparam(pvlist, i, &param);

		int j;
		if ((j = _af_instparam_index_from_id(file->m_fileFormat, param)) == -1)
			/* no parameter with that id; ignore */
			continue;

		if (!file->isInstrumentParameterValid(pvlist, i))
			/* bad parameter value; ignore */
			continue;

		int	type = _af_units[file->m_fileFormat].instrumentParameters[j].type;

		switch (type)
		{
			case AU_PVTYPE_LONG:
				AUpvgetval(pvlist, i, &instrument->values[j].l);
				break;
			case AU_PVTYPE_DOUBLE:
				AUpvgetval(pvlist, i, &instrument->values[j].d);
				break;
			case AU_PVTYPE_PTR:
				AUpvgetval(pvlist, i, &instrument->values[j].v);
				break;
			default:
				return;
		}
	}
}