LSL Stream Name

[dav0dea]

Hi, I noticed that the LSL stream name is always the same "random" string from the getRandomString function. I think this is actually always the same string due to the way C implements rand()?

App-WearableSensing/CLI/dsi2lsl.c

Lines 171 to 177 in 827d177

	void getRandomString(char *s, const int len)
	{
	int i = 0;
	static const char alphanum[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
	for (i=0; i < len; ++i){ s[i] = alphanum[rand() % (sizeof(alphanum) - 1)];}
	s[len] = 0;
	}

This causes problems, for example, when trying to stream from multiple headsets to LSL at the same time. A simple fix would be to use the streamName variable for the LSL stream name instead of source_id here:

App-WearableSensing/CLI/dsi2lsl.c

Line 199 in 827d177

info = lsl_create_streaminfo((char*)streamName,"EEG",numberOfChannels,samplingRate,cft_float32,source_id);

This might be a bug in the LSL C API but the first parameter (streamName) doesn't actually seem to set the stream name. The stream name comes from the last parameter (source_id in this case).