#include "speakersensor.h"

#include <QDebug>

SpeakerSensorSource::SpeakerSensorSource(QString name, QObject *parent) : QObject(parent), name_(name)
{
	silenceCount = 0;
}

SpeakerSensorSource::~SpeakerSensorSource()
{
	abort();
}

void SpeakerSensorSource::run()
{
	abort();
	arecord.start( "arecord", {"--disable-softvol", "-r", "8000", "-D", "front", "-"});

	connect(&timer, SIGNAL(timeout()), this, SLOT(doTick()));
	timer.setInterval(500);
	timer.start();

	stateChanged(Sensor(Sensor::TYPE_AUDIO_OUTPUT, 0, 1, name_));
}


void SpeakerSensorSource::abort()
{
	if(arecord.state() == QProcess::Running)arecord.close();
	if(timer.isActive())timer.stop();
}

void SpeakerSensorSource::doTick()
{
	if(arecord.state() == QProcess::Running)
	{
		QByteArray buffer = arecord.readAllStandardOutput();
		//qDebug()<<(int16_t)buffer[0];
		for(long i = 0; i < buffer.size(); i++)
		{
			if((int16_t)buffer.at(i) != -128)
			{
				silenceCount = 0;
			}
		}
		if(silenceCount > 40 && state)
		{
			stateChanged(Sensor(Sensor::TYPE_AUDIO_OUTPUT, 0, 0, name_));
			state = false;
		}
		else if(silenceCount == 0 && !state)
		{
			stateChanged(Sensor(Sensor::TYPE_AUDIO_OUTPUT, 0, 1, name_));
			state = true;
		}
		silenceCount++;
	}
}