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/*
* targavfd plugin for VDR (C++)
*
* (C) 2010 Andreas Brachold <vdr07 AT deltab de>
* Span handling suggest by span-plugin
*
* This targavfd plugin is free software: you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published
* by the Free Software Foundation, version 3 of the License.
*
* See the files README and COPYING for details.
*
*/
#include "targavfd.h"
#include "span.h"
/*
* Spectrum Analyzer visualization
* need as middleware span-plugin
*/
bool cVFDWatch::RenderSpectrumAnalyzer()
{
bool bDraw = false;
/*if ( theSetup.m_bEnableSpectrumAnalyzer )*/ {
if (cPluginManager::CallFirstService(SPAN_GET_BAR_HEIGHTS_ID, NULL)) {
Span_GetBarHeights_v1_0 gbh;
int bands = 19;
int falloff = 8;
int i,x,y;
unsigned int *barHeights = new unsigned int[bands];
unsigned int *barHeightsLeftChannel = new unsigned int[bands];
unsigned int *barHeightsRightChannel = new unsigned int[bands];
unsigned int volumeLeftChannel;
unsigned int volumeRightChannel;
unsigned int volumeBothChannels;
unsigned int *barPeaksBothChannels = new unsigned int[bands];
unsigned int *barPeaksLeftChannel = new unsigned int[bands];
unsigned int *barPeaksRightChannel = new unsigned int[bands];
gbh.bands = bands;
gbh.barHeights = barHeights;
gbh.barHeightsLeftChannel = barHeightsLeftChannel;
gbh.barHeightsRightChannel = barHeightsRightChannel;
gbh.volumeLeftChannel = &volumeLeftChannel;
gbh.volumeRightChannel = &volumeRightChannel;
gbh.volumeBothChannels = &volumeBothChannels;
gbh.name = "targavfd";
gbh.falloff = falloff;
gbh.barPeaksBothChannels = barPeaksBothChannels;
gbh.barPeaksLeftChannel = barPeaksLeftChannel;
gbh.barPeaksRightChannel = barPeaksRightChannel;
if ( cPluginManager::CallFirstService(SPAN_GET_BAR_HEIGHTS_ID, &gbh )) {
int barWidth = (this->Width() - bands)/bands;
int saEndY = this->Height();
this->clear();
for ( i=0; i < bands; i++ ) {
// draw bar
y = (barHeights[i]*(saEndY))/SPAN_HEIGHT;
x = (barWidth*i) + i;
this->Rectangle(x,
saEndY,
x + barWidth - 1,
saEndY - y,
true);
// draw peak
y = (barPeaksBothChannels[i]*(saEndY))/SPAN_HEIGHT;
if ( y > 0) {
this->Rectangle(x,
saEndY - y,
x + barWidth - 1,
saEndY - y,
true);
}
}
bDraw = true;
}
delete [] barHeights;
delete [] barHeightsLeftChannel;
delete [] barHeightsRightChannel;
delete [] barPeaksBothChannels;
delete [] barPeaksLeftChannel;
delete [] barPeaksRightChannel;
}
}
return bDraw;
}
/*
* Report presence of Spectrum Analyzer visualization
* from span-plugin requested
*/
bool cPluginTargaVFD::Service(const char *Id, void *Data) {
if (Id && strcmp(Id, SPAN_CLIENT_CHECK_ID) == 0) {
if ( /*theSetup.m_bEnableSpectrumAnalyzer &&*/ (Data != NULL) ) {
*((Span_Client_Check_1_0*)Data)->isActive = true;
}
return true;
}
return false;
}
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