totally untested initial code for MidiPlaylistSource, to provide for compound MIDI...

[ardour.git] / libs / ardour / meter.cc

diff --git a/libs/ardour/meter.cc b/libs/ardour/meter.cc
index e49b69574e3e8bfbcc19e5deba9f235df4bda71a..6cdcffb8b65ba807ded984d5aad545206224c01c 100644 (file)
--- a/libs/ardour/meter.cc
+++ b/libs/ardour/meter.cc
@@ -33,26 +33,22 @@ using namespace ARDOUR;
 
 PBD::Signal0<void> Metering::Meter;
 
-PeakMeter::PeakMeter (Session& s, const XMLNode& node)
-       : Processor (s, node)
-{
-       
-}
-
 /** Get peaks from @a bufs
  * Input acceptance is lenient - the first n buffers from @a bufs will
  * be metered, where n was set by the last call to setup(), excess meters will
  * be set to 0.
  */
 void
-PeakMeter::run (BufferSet& bufs, sframes_t /*start_frame*/, sframes_t /*end_frame*/, nframes_t nframes, bool)
+PeakMeter::run (BufferSet& bufs, framepos_t /*start_frame*/, framepos_t /*end_frame*/, pframes_t nframes, bool)
 {
        if (!_active && !_pending_active) {
                return;
        }
 
-       const uint32_t n_audio = min(_configured_input.n_audio(), bufs.count().n_audio());
-       const uint32_t n_midi  = min(_configured_input.n_midi(), bufs.count().n_midi());
+       // cerr << "meter " << name() << " runs with " << bufs.available() << " inputs\n";
+
+       const uint32_t n_audio = min (current_meters.n_audio(), bufs.count().n_audio());
+       const uint32_t n_midi  = min (current_meters.n_midi(), bufs.count().n_midi());
 
        uint32_t n = 0;
 
@@ -60,7 +56,7 @@ PeakMeter::run (BufferSet& bufs, sframes_t /*start_frame*/, sframes_t /*end_fram
        for (uint32_t i = 0; i < n_midi; ++i, ++n) {
                float val = 0.0f;
                for (MidiBuffer::iterator e = bufs.get_midi(i).begin(); e != bufs.get_midi(i).end(); ++e) {
-                       const Evoral::MIDIEvent<nframes_t> ev(*e, false);
+                       const Evoral::MIDIEvent<framepos_t> ev(*e, false);
                        if (ev.is_note_on()) {
                                const float this_vel = log(ev.buffer()[2] / 127.0 * (M_E*M_E-M_E) + M_E) - 1.0;
                                if (this_vel > val) {
@@ -73,7 +69,7 @@ PeakMeter::run (BufferSet& bufs, sframes_t /*start_frame*/, sframes_t /*end_fram
                                }
                        }
                }
-               _peak_power[n] = val;
+               _peak_power[n] = max (val, _peak_power[n]);
        }
 
        // Meter audio in to the rest of the peaks
@@ -121,6 +117,8 @@ PeakMeter::configure_io (ChanCount in, ChanCount out)
 
        current_meters = in;
 
+       reset_max_channels (in);
+
        return Processor::configure_io (in, out);
 }
 
@@ -133,7 +131,7 @@ PeakMeter::reflect_inputs (const ChanCount& in)
 void
 PeakMeter::reset_max_channels (const ChanCount& chn)
 {
-       uint32_t limit = chn.n_total();
+       uint32_t const limit = chn.n_total();
 
        while (_peak_power.size() > limit) {
                _peak_power.pop_back();