X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fmeter.cc;h=5dee1d98451d9089d80c44e1e34ccac3aecad3ce;hb=a2d2f738cb63dbf0fb89e0a00c424ce883fb7888;hp=4a873600f6f7828ef3da29d5e40ad5945f177974;hpb=2a52135c663e9a60b5f0cc9cc6673799c3ea5549;p=ardour.git

diff --git a/libs/ardour/meter.cc b/libs/ardour/meter.cc
index 4a873600f6..5dee1d9845 100644
--- a/libs/ardour/meter.cc
+++ b/libs/ardour/meter.cc
@@ -28,17 +28,44 @@ namespace ARDOUR {
 
 
 /** Get peaks from @a bufs
- * Input acceptance is lenient - the first n audio buffers from @a bufs will
+ * 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, nframes_t nframes, nframes_t offset)
+PeakMeter::run_in_place (BufferSet& bufs, nframes_t start_frame, nframes_t end_frame, nframes_t nframes, nframes_t offset)
 {
-	size_t meterable = std::min(bufs.count().get(DataType::AUDIO), _peak_power.size());
+	size_t meterable = std::min((size_t)bufs.count().n_total(), _peak_power.size());
 
-	// Meter what we have
-	for (size_t n = 0; n < meterable; ++n) {
+	size_t n = 0;
+
+	// Meter what we have (midi)
+	for ( ; n < meterable && n < bufs.count().n_midi(); ++n) {
+	
+		float val = 0;
+		
+		// GUI needs a better MIDI meter, not much information can be
+		// expressed through peaks alone
+		for (MidiBuffer::iterator i = bufs.get_midi(n).begin(); i != bufs.get_midi(n).end(); ++i) {
+			const Evoral::MIDIEvent& ev = *i;
+			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;
+				//printf("V %d -> %f\n", (int)((Byte)ev.buffer[2]), this_vel);
+				if (this_vel > val)
+					val = this_vel;
+			} else {
+				val += 1.0 / bufs.get_midi(n).capacity();
+				if (val > 1.0)
+					val = 1.0;
+			}
+		}
+			
+		_peak_power[n] = val;
+
+	}
+	
+	// Meter what we have (audio)
+	for ( ; n < meterable && n < bufs.count().n_audio(); ++n) {
 		_peak_power[n] = compute_peak (bufs.get_audio(n).data(nframes, offset), nframes, _peak_power[n]); 
 	}
 
@@ -64,10 +91,15 @@ PeakMeter::reset_max ()
 	}
 }
 
-void
-PeakMeter::setup (const ChanCount& in)
+bool
+PeakMeter::configure_io (ChanCount in, ChanCount out)
 {
-	uint32_t limit = in.get(DataType::AUDIO);
+	/* we're transparent no matter what.  fight the power. */
+	if (out != in) {
+		return false;
+	}
+
+	uint32_t limit = in.n_total();
 
 	while (_peak_power.size() > limit) {
 		_peak_power.pop_back();
@@ -84,6 +116,8 @@ PeakMeter::setup (const ChanCount& in)
 	assert(_peak_power.size() == limit);
 	assert(_visible_peak_power.size() == limit);
 	assert(_max_peak_power.size() == limit);
+
+	return Processor::configure_io (in, out);
 }
 
 /** To be driven by the Meter signal from IO.