From e190d38057892b69246391841b234a368bc2b4ad Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Tue, 1 Mar 2011 19:19:02 +0000
Subject: MAJOR rewrite of the internals. New input/output 'plugin' system.
 Still a lot missing.

---
 src/channelmixer.cc | 110 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 src/channelmixer.cc

(limited to 'src/channelmixer.cc')

diff --git a/src/channelmixer.cc b/src/channelmixer.cc
new file mode 100644
index 0000000..c8ee71a
--- /dev/null
+++ b/src/channelmixer.cc
@@ -0,0 +1,110 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            channelmixer.cc
+ *
+ *  Sun Oct 17 10:14:34 CEST 2010
+ *  Copyright 2010 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo 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.
+ *
+ *  DrumGizmo 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 DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "channelmixer.h"
+
+ChannelMixer::ChannelMixer(Channels &c, Channel *defc, float defg)
+  : channels(c)
+{
+  setDefaults(defc, defg);
+}
+
+void ChannelMixer::setDefaults(Channel *defc, float defg)
+{
+  defaultchannel = defc;
+  if(defc == NULL && channels.size() > 0) defaultchannel = &channels[0];
+
+  defaultgain = defg;
+}
+
+MixerSettings &ChannelMixer::lookup(InstrumentChannel *c)
+{
+  std::map<InstrumentChannel *, MixerSettings>::iterator mi = mix.find(c);
+
+  if(mi == mix.end()) {
+    MixerSettings m;
+    m.gain = defaultgain;
+    m.output = defaultchannel;
+    mix[c] = m;
+    return mix[c];
+  }
+
+  return mi->second;
+}
+
+
+#ifdef TEST_CHANNELMIXER
+//deps: channel.cc
+//cflags:
+//libs:
+#include "test.h"
+
+TEST_BEGIN;
+
+Channel ch1;
+Channel ch2;
+Channels channels;
+channels.push_back(ch1);
+channels.push_back(ch2);
+
+{
+  ChannelMixer mixer(channels, NULL, 1.0);
+
+  InstrumentChannel ich;
+  MixerSettings &m = mixer.lookup(&ich);
+  TEST_EQUAL(m.output, &channels[0], "Default channel?");
+  TEST_EQUAL_FLOAT(m.gain, 1.0, "Default gain?");
+}
+
+{
+  ChannelMixer mixer(channels, &channels[1]);
+
+  InstrumentChannel ich;
+  MixerSettings &m = mixer.lookup(&ich);
+  TEST_EQUAL(m.output, &channels[1], "Default channel?");
+  TEST_EQUAL_FLOAT(m.gain, 1.0, "Default gain?");
+}
+
+{
+  ChannelMixer mixer(channels, &channels[1]);
+
+  InstrumentChannel ich;
+  MixerSettings &m = mixer.lookup(&ich);
+  TEST_EQUAL(m.output, &channels[1], "Default channel?");
+  TEST_EQUAL_FLOAT(m.gain, 1.0, "Default gain?");
+
+  m.output = &channels[0];
+  m.gain = 0.5;
+
+  MixerSettings &m2 = mixer.lookup(&ich);
+  TEST_EQUAL(m2.output, &channels[0], "Changed channel?");
+  TEST_EQUAL_FLOAT(m2.gain, 0.5, "Changed gain?");
+}
+
+
+TEST_END;
+
+#endif/*TEST_CHANNELMIXER*/
-- 
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