diff src/LiveInstruments.cpp @ 342:ad45b18427e0

Merge from branch livemode

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/LiveInstruments.cpp	Mon Jul 06 09:15:21 2015 +0100
@@ -0,0 +1,110 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+  Silvet
+
+  A Vamp plugin for note transcription.
+  Centre for Digital Music, Queen Mary University of London.
+    
+  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.  See the file
+  COPYING included with this distribution for more information.
+*/
+
+#include "LiveInstruments.h"
+
+#include "data/include/templates.h"
+
+#include <iostream>
+
+using namespace std;
+
+InstrumentPack
+LiveAdapter::adapt(const InstrumentPack &original)
+{
+    vector<InstrumentPack::Templates> templates;
+
+//            cerr << "LiveAdapter: reduced template height is " << SILVET_TEMPLATE_HEIGHT/5 << endl;
+
+    bool merge = false;
+    // The live template for piano has only one piano in it, so as
+    // to process faster. We make it by averaging the originals
+    if (original.name == "Piano") {
+        merge = true;
+    }
+
+    InstrumentPack::Templates t;
+    bool first = true;
+    
+    for (const auto &origt: original.templates) {
+
+	t.lowestNote = origt.lowestNote;
+	t.highestNote = origt.highestNote;
+        t.data.resize(origt.data.size());
+
+	for (int j = 0; j < int(origt.data.size()); ++j) {
+
+	    t.data[j].resize(SILVET_TEMPLATE_HEIGHT/5);
+
+	    for (int k = 0; k < SILVET_TEMPLATE_HEIGHT/5; ++k) {
+
+                if (!merge || first) {
+                    t.data[j][k] = 0.f;
+                }
+
+                for (int m = 0; m < 5; ++m) {
+                    t.data[j][k] += origt.data[j][k * 5 + m + 2];
+                }
+	    }
+	}
+
+        if (!merge) {
+            templates.push_back(t);
+            t = InstrumentPack::Templates();
+        }
+
+        first = false;
+    }
+
+    if (merge) {
+        templates.push_back(t);
+    }
+
+    // re-normalise
+    for (auto &t: templates) {
+        for (auto &d: t.data) {
+            float sum = 0.f;
+            for (auto v: d) sum += v;
+            for (auto &v: d) v /= sum;
+        }
+    }
+    
+    InstrumentPack live(original.lowestNote,
+			original.highestNote,
+			original.name,
+			templates);
+
+    live.templateHeight = SILVET_TEMPLATE_HEIGHT/5;
+    live.templateMaxShift = 0;
+    live.templateSize = live.templateHeight;
+    
+    live.maxPolyphony = original.maxPolyphony;
+    live.pitchSparsity = original.pitchSparsity;
+    live.sourceSparsity = original.sourceSparsity;
+    live.levelThreshold = original.levelThreshold / 15;
+
+    return live;
+}
+
+vector<InstrumentPack>
+LiveAdapter::adaptAll(const vector<InstrumentPack> &v)
+{
+    vector<InstrumentPack> out;
+    for (int i = 0; i < (int)v.size(); ++i) {
+        InstrumentPack p(LiveAdapter::adapt(v[i]));
+        out.push_back(p);
+    }
+    return out;
+}