[Clam-devel] generator script: example of use from an irc question

[Hernán Ordiales]

Yesterday at the irc channel:
"[11:51] <groton> Consul, do you know if there is any trigger-like
processing unit, list when the volume gets louder than a threshold or
something like that"

I'm not Consul at the irc (i'm hordia), but today at my console...

cd CLAM/scripts/TemplatedPluginsGenerator
vi ThresholdTrigger.template

Name:ThresholdTriggerTemplate
BaseClass:Processing
i:AudioInPort,Audio Input
ic:0,1,Threshold
oc:0,1,Trigger

:wq

./TemplateGenerator.py ThresholdTrigger.template
./TemplatedPluginsGenerator.py ThresholdTrigger
ThresholdTriggerTemplate "Hernán Ordiales" GPL 2008


cd CLAM/plugins/ThresholdTrigger
vi ThresholdTrigger.hxx

#include <cmath>

bool Do()
{
	bool result = Do( mAudioInput.GetAudio() );
	mAudioInput.Consume();
	return result;
}

bool Do(const Audio& in)
{
	int size = in.GetSize();
	DataArray& inb = in.GetBuffer();
	TData threshold = mThreshold.GetLastValue();
	bool trigger = 0;
	for (int i=0;i<size;i++)
	{
		if (std::fabs(inb[i])>threshold)
			trigger = 1;
	}
	mTrigger.SendControl(trigger);
	return true;
}

:wq

scons install

NetworkEditor


It's a very simple (and poor) implementation but was just to show the
idea of how those scripts can save a lot of work.
BTW, the scripts was improved, now you can also set the port name
(port type + port name) and the incontrol bounds in the input file.

cheers
-- 
Hernán
http://h.ordia.com.ar
GnuPG: 0xEE8A3FE9