/*
- Copyright (C) 2006 Paul Davis
-
+ 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.
#define __ardour_meter_h__
#include <vector>
-#include <ardour/types.h>
-#include <ardour/insert.h>
-#include <pbd/fastlog.h>
+#include "ardour/types.h"
+#include "ardour/processor.h"
+#include "pbd/signals.h"
+#include "pbd/fastlog.h"
namespace ARDOUR {
class ChanCount;
class Session;
+class Metering {
+ public:
+ static void update_meters ();
+ static PBD::Signal0<void> Meter;
+
+ private:
+ /* this object is not meant to be instantiated */
+ Metering();
+};
/** Meters peaks on the input and stores them for access.
*/
-class PeakMeter : public Insert {
+class PeakMeter : public Processor {
public:
- PeakMeter(Session& s) : Insert(s, "meter", PreFader) {}
+ PeakMeter(Session& s) : Processor(s, "Meter") {}
+ 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);
+ /* special method for meter, to ensure that it can always handle the maximum
+ number of streams in the route, no matter where we put it.
+ */
+
+ void reset_max_channels (const ChanCount&);
+
+ /* tell the meter than no matter how many channels it can handle,
+ `in' is the number it is actually going be handling from
+ now on.
+ */
+
+ void reflect_inputs (const ChanCount& in);
+
/** Compute peaks */
- void run (BufferSet& bufs, nframes_t start_frame, nframes_t end_frame, nframes_t nframes, nframes_t offset);
-
- float peak_power (uint32_t n) {
+ void run (BufferSet& bufs, sframes_t start_frame, sframes_t end_frame, nframes_t nframes, bool);
+
+ ChanCount input_streams () const { return current_meters; }
+ ChanCount output_streams () const { return current_meters; }
+
+ 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];
}
}
-private:
+ XMLNode& state (bool full);
+private:
friend class IO;
- void meter();
-
+
+ ChanCount current_meters;
+
std::vector<float> _peak_power;
std::vector<float> _visible_peak_power;
std::vector<float> _max_peak_power;