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/*
Copyright (C) 2006 Paul Davis
This program 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; either version 2 of the License, or (at your option)
any later version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __ardour_meter_h__
#define __ardour_meter_h__
#include <vector>
#include <sigc++/slot.h>
#include "ardour/types.h"
#include "ardour/processor.h"
#include "pbd/fastlog.h"
namespace ARDOUR {
class BufferSet;
class ChanCount;
class Session;
class Metering {
public:
static void update_meters ();
static sigc::signal<void> Meter;
static sigc::connection connect (sigc::slot<void> the_slot);
static void disconnect (sigc::connection& c);
private:
/* this object is not meant to be instantiated */
Metering();
static Glib::StaticMutex m_meter_signal_lock;
};
/** Meters peaks on the input and stores them for access.
*/
class PeakMeter : public Processor {
public:
PeakMeter(Session& s) : Processor(s, "Meter") {}
PeakMeter(Session&s, const XMLNode& node);
void meter();
void reset ();
void reset_max ();
bool can_support_io_configuration (const ChanCount& in, ChanCount& out) const;
bool configure_io (ChanCount in, ChanCount out);
/** Compute peaks */
void run (BufferSet& bufs, sframes_t start_frame, sframes_t end_frame, nframes_t nframes, bool);
float peak_power (uint32_t n) {
if (n < _visible_peak_power.size()) {
return _visible_peak_power[n];
} else {
return minus_infinity();
}
}
float max_peak_power (uint32_t n) {
if (n < _max_peak_power.size()) {
return _max_peak_power[n];
} else {
return minus_infinity();
}
}
XMLNode& state (bool full);
private:
friend class IO;
std::vector<float> _peak_power;
std::vector<float> _visible_peak_power;
std::vector<float> _max_peak_power;
};
} // namespace ARDOUR
#endif // __ardour_meter_h__
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