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/* -*- 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 Lesser General Public License as published by
* the Free Software Foundation; either version 3 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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(const Channels& c, const Channel* defc, float defg)
: mix{}
, defaultchannel{nullptr}
, defaultgain{1.f}
, channels(c)
{
setDefaults(defc, defg);
}
void ChannelMixer::setDefaults(const Channel* defc, float defg)
{
defaultchannel = defc;
if(defc == nullptr && channels.size() > 0)
{
defaultchannel = &channels[0];
}
defaultgain = defg;
}
MixerSettings& ChannelMixer::lookup(const InstrumentChannel& c)
{
auto 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, nullptr, 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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