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lmms/plugins/Nes/Nes.cpp
Michael Gregorius 286e62adf5 Simplify sample frame operations (make it a class) (#7156) 
* Remove the struct StereoSample

Remove the struct `StereoSample`. Let `AudioEngine::getPeakValues` return a `sampleFrame` instead.

Adjust the calls in `Mixer`  and `Oscilloscope`.

* Simplify AudioEngine::getPeakValues

* Remove surroundSampleFrame

Some code assumes that `surroundSampleFrame` is interchangeable with `sampleFrame`. Thus, if the line `#define LMMS_DISABLE_SURROUND` is commented out in `lmms_basics.h` then the code does not compile anymore because `surroundSampleFrame` now is defined to be an array with four values instead of two. There also does not seem to be any support for surround sound (four channels instead of two) in the application. The faders and mixers do not seem to support more that two channels and the instruments and effects all expect a `sampleFrame`, i.e. stereo channels. It therefore makes sense to remove the "feature" because it also hinders the improvement of `sampleFrame`, e.g. by making it a class with some convenience methods that act on `sampleFrame` instances.

All occurrences of `surroundSampleFrame` are replaced with `sampleFrame`.

The version of `BufferManager::clear` that takes a `surroundSampleFrame` is removed completely.

The define `SURROUND_CHANNELS` is removed. All its occurrences are replaced with `DEFAULT_CHANNELS`.

Most of the audio devices classes, i.e. classes that inherit from `AudioDevice`, now clamp the configuration parameter between two values of `DEFAULT_CHANNELS`. This can be improved/streamlined later.

`BYTES_PER_SURROUND_FRAME` has been removed as it was not used anywhere anyway.

* Make sampleFrame a class

Make `sampleFrame` a class with several convenience methods. As a first step and demonstration adjust the follow methods to make use of the new functionality:
* `AudioEngine::getPeakValues`: Much more concise now.
* `lmms::MixHelpers::sanitize`: Better structure, better readable, less dereferencing and juggling with indices.
* `AddOp`, `AddMultipliedOp`, `multiply`: Make use of operators. Might become superfluous in the future.

* More operators and methods for sampleFrame

Add some more operators and methods to `sampleFrame`:
* Constructor which initializes both channels from a single sample value
* Assignment operator from a single sample value
* Addition/multiplication operators
* Scalar product

Adjust some more plugins to the new functionality of `sampleFrame`.

* Adjust DelayEffect to methods in sampleFrame

* Use composition instead of inheritance

Using inheritance was the quickest way to enable adding methods to `sampleFrame` without having to reimpement much of `std::array`s interface.

This is changed with this commit. The array is now a member of `sampleFrame` and the interface is extended with the necessary methods `data` and the index operator.

An `average` method was added so that no iterators need to be implemented (see changes in `SampleWaveform.cpp`).

* Apply suggestions from code review

Apply Veratil's suggestions from the code review

Co-authored-by: Kevin Zander <veratil@gmail.com>

* Fix warnings: zeroing non-trivial type

Fix several warnings of the following form:

Warnung: »void* memset(void*, int, size_t)« Säubern eines Objekts von nichttrivialem Typ »class lmms::sampleFrame«; use assignment or value-initialization instead [-Wclass-memaccess]

* Remove unnecessary reinterpret_casts

Remove some unnecessary reinterpret_casts with regards to `sampleFrame` buffers.

`PlayHandle::m_playHandleBuffer` already is a `sampleFrame*` and does not need a reinterpret_cast anymore.

In `LadspaEffect::processAudioBuffer` the `QVarLengthArray` is now directly initialized as an array of `sampleFrame` instances.

I guess in both places the `sampleFrame` previously was a `surroundSampleFrame` which has been removed.

* Clean up zeroSampleFrames code

* Fix warnings in RemotePlugin

Fix some warnings related to calls to `memcpy` in conjunction with`sampleFrame` which is now a class.

Add the helper functions `copyToSampleFrames` and `copyFromSampleFrames` and use them. The first function copies data from a `float` buffer into a `sampleFrame` buffer and the second copies vice versa.

* Rename "sampleFrame" to "SampleFrame"

Uppercase the name of `sampleFrame` so that it uses UpperCamelCase convention.

* Move SampleFrame into its own file

Move the class `SampleFrame` into its own class and remove it from `lmms_basics.h`.

Add forward includes to all headers where possible or include the `SampleFrame` header if it's not just referenced but used.

Add include to all cpp files where necessary.

It's a bit surprising that the `SampleFrame` header does not need to be included much more often in the implementation/cpp files. This is an indicator that it seems to be included via an include chain that at one point includes one of the headers where an include instead of a forward declaration had to be added in this commit.

* Return reference for += and *=

Return a reference for the compound assignment operators `+=` and `-=`.

* Explicit float constructor

Make the  constructor that takes a `float` explicit.

Remove the assignment operator that takes a `float`. Clients must use the
explicit `float` constructor and assign the result.

Adjust the code in "BitInvader" accordingly.

* Use std::fill in zeroSampleFrames

* Use zeroSampleFrames in sanitize

* Replace max with absMax

Replace `SampleFrame::max` with `SampleFrame::absMax`.

Use `absMax` in `DelayEffect::processAudioBuffer`. This should also fix
a buggy implementation of the peak computation.

Add the function `getAbsPeakValues`. It  computes the absolute peak
values for a buffer.

Remove `AudioEngine::getPeakValues`. It's not really the business of the
audio engine. Let `Mixer` and `Oscilloscope` use `getAbsPeakValues`.

* Replace scalarProduct

Replace the rather mathematical method `scalarProduct` with
`sumOfSquaredAmplitudes`. It was always called on itself anyway.

* Remove comment/TODO

* Simplify sanitize

Simplify the `sanitize` function by getting rid of the `bool found` and
by zeroing the buffer as soon as a problem is found.

* Put pointer symbols next to type

* Code review adjustments

* Remove "#pragme once"
* Adjust name of include guard
* Remove superfluous includes (leftovers from previous code changes)

---------

Co-authored-by: Kevin Zander <veratil@gmail.com>
2024-06-30 20:21:19 +02:00

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/* Nes.cpp - A NES instrument plugin for LMMS
*
* Copyright (c) 2014 Vesa Kivimäki
* Copyright (c) 2004-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
*
* This file is part of LMMS - https://lmms.io
*
* 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.
*
* This program 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 this program (see COPYING); if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*
*/
#include <QDomElement>
#include "Nes.h"
#include "AudioEngine.h"
#include "Engine.h"
#include "InstrumentTrack.h"
#include "interpolation.h"
#include "Knob.h"
#include "Oscillator.h"
#include "embed.h"
#include "plugin_export.h"
namespace lmms
{
extern "C"
{
Plugin::Descriptor PLUGIN_EXPORT nes_plugin_descriptor =
{
LMMS_STRINGIFY( PLUGIN_NAME ),
"Nescaline",
QT_TRANSLATE_NOOP( "PluginBrowser",
"A NES-like synthesizer" ),
"Vesa Kivimäki <contact/dot/diizy/at/nbl/dot/fi>",
0x0100,
Plugin::Type::Instrument,
new PluginPixmapLoader( "logo" ),
nullptr,
nullptr,
} ;
}
NesObject::NesObject( NesInstrument * nes, const sample_rate_t samplerate, NotePlayHandle * nph ) :
m_parent( nes ),
m_samplerate( samplerate ),
m_nph( nph )
{
m_pitchUpdateCounter = 0;
m_pitchUpdateFreq = wavelength( 60.0f );
m_LFSR = LFSR_INIT;
m_ch1Counter = 0;
m_ch2Counter = 0;
m_ch3Counter = 0;
m_ch4Counter = 0;
m_ch1EnvCounter = 0;
m_ch2EnvCounter = 0;
m_ch4EnvCounter = 0;
m_ch1EnvValue = 15;
m_ch2EnvValue = 15;
m_ch4EnvValue = 15;
m_ch1SweepCounter = 0;
m_ch2SweepCounter = 0;
m_ch4SweepCounter = 0;
m_12Last = 0.0f;
m_34Last = 0.0f;
m_maxWlen = wavelength( MIN_FREQ );
m_nsf = NES_SIMPLE_FILTER * ( m_samplerate / 44100.0 );
m_lastNoteFreq = 0;
m_lastNoiseFreq = -1.0f; // value that is always different than noisefreq so it gets updated at start
m_vibratoPhase = 0;
updatePitch();
}
void NesObject::renderOutput( SampleFrame* buf, fpp_t frames )
{
////////////////////////////////
// //
// variables for processing //
// //
////////////////////////////////
bool ch1Enabled = m_parent->m_ch1Enabled.value();
bool ch2Enabled = m_parent->m_ch2Enabled.value();
bool ch3Enabled = m_parent->m_ch3Enabled.value();
bool ch4Enabled = m_parent->m_ch4Enabled.value();
float ch1DutyCycle = DUTY_CYCLE[ m_parent->m_ch1DutyCycle.value() ];
int ch1EnvLen = wavelength( floorf( 240.0 / ( m_parent->m_ch1EnvLen.value() + 1 ) ) );
bool ch1EnvLoop = m_parent->m_ch1EnvLooped.value();
float ch2DutyCycle = DUTY_CYCLE[ m_parent->m_ch2DutyCycle.value() ];
int ch2EnvLen = wavelength( floorf( 240.0 / ( m_parent->m_ch2EnvLen.value() + 1 ) ) );
bool ch2EnvLoop = m_parent->m_ch2EnvLooped.value();
int ch4EnvLen = wavelength( floorf( 240.0 / ( m_parent->m_ch4EnvLen.value() + 1 ) ) );
bool ch4EnvLoop = m_parent->m_ch4EnvLooped.value();
// processing variables for operators
int ch1;
int ch2;
int ch3;
int ch4;
// levels for generators (used for dc offset compensation)
int ch1Level;
int ch2Level;
int ch3Level;
int ch4Level;
int ch1SweepRate = wavelength( floorf( 120.0 / ( m_parent->m_ch1SweepRate.value() + 1 ) ) );
int ch2SweepRate = wavelength( floorf( 120.0 / ( m_parent->m_ch2SweepRate.value() + 1 ) ) );
int ch4SweepRate = wavelength( floorf( 60.0f / ( 8.0f - qAbs( m_parent->m_ch4Sweep.value() ) ) ) );
int ch1Sweep = static_cast<int>( m_parent->m_ch1SweepAmt.value() * -1.0 );
int ch2Sweep = static_cast<int>( m_parent->m_ch2SweepAmt.value() * -1.0 );
int ch4Sweep = 0;
if( m_parent->m_ch4Sweep.value() != 0.0f )
{
ch4Sweep = m_parent->m_ch4Sweep.value() > 0.0f
? -1
: 1;
}
// the amounts are inverted so we correct them here
if( ch1Sweep > 0 )
{
ch1Sweep = 8 - ch1Sweep;
}
if( ch1Sweep < 0 )
{
ch1Sweep = -8 - ch1Sweep;
}
if( ch2Sweep > 0 )
{
ch2Sweep = 8 - ch2Sweep;
}
if( ch2Sweep < 0 )
{
ch2Sweep = -8 - ch2Sweep;
}
// start framebuffer loop
for( f_cnt_t f = 0; f < frames; f++ )
{
////////////////////////////////
// //
// pitch update //
// //
////////////////////////////////
m_pitchUpdateCounter++;
if( m_pitchUpdateCounter >= m_pitchUpdateFreq )
{
updatePitch();
m_pitchUpdateCounter = 0;
}
////////////////////////////////
// //
// channel 1 //
// //
////////////////////////////////
// render pulse wave
if( m_wlen1 <= m_maxWlen && m_wlen1 >= MIN_WLEN && ch1Enabled )
{
ch1Level = m_parent->m_ch1EnvEnabled.value()
? static_cast<int>( ( m_parent->m_ch1Volume.value() * m_ch1EnvValue ) / 15.0 )
: static_cast<int>( m_parent->m_ch1Volume.value() );
ch1 = m_ch1Counter > m_wlen1 * ch1DutyCycle
? 0
: ch1Level;
}
else ch1 = ch1Level = 0;
// update sweep
m_ch1SweepCounter++;
if( m_ch1SweepCounter >= ch1SweepRate )
{
m_ch1SweepCounter = 0;
if( m_parent->m_ch1SweepEnabled.value() && m_wlen1 <= m_maxWlen && m_wlen1 >= MIN_WLEN )
{
// check if the sweep goes up or down
if( ch1Sweep > 0 )
{
m_wlen1 += m_wlen1 >> qAbs( ch1Sweep );
}
if( ch1Sweep < 0 )
{
m_wlen1 -= m_wlen1 >> qAbs( ch1Sweep );
m_wlen1--; // additional minus 1 for ch1 only
}
}
}
// update framecounters
m_ch1Counter++;
m_ch1Counter = m_wlen1 ? m_ch1Counter % m_wlen1 : 0;
m_ch1EnvCounter++;
if( m_ch1EnvCounter >= ch1EnvLen )
{
m_ch1EnvCounter = 0;
m_ch1EnvValue--;
if( m_ch1EnvValue < 0 )
{
m_ch1EnvValue = ch1EnvLoop ? 15 : 0;
}
}
////////////////////////////////
// //
// channel 2 //
// //
////////////////////////////////
// render pulse wave
if( m_wlen2 <= m_maxWlen && m_wlen2 >= MIN_WLEN && ch2Enabled )
{
ch2Level = m_parent->m_ch2EnvEnabled.value()
? static_cast<int>( ( m_parent->m_ch2Volume.value() * m_ch2EnvValue ) / 15.0 )
: static_cast<int>( m_parent->m_ch2Volume.value() );
ch2 = m_ch2Counter > m_wlen2 * ch2DutyCycle
? 0
: ch2Level;
}
else ch2 = ch2Level = 0;
// update sweep
m_ch2SweepCounter++;
if( m_ch2SweepCounter >= ch2SweepRate )
{
m_ch2SweepCounter = 0;
if( m_parent->m_ch2SweepEnabled.value() && m_wlen2 <= m_maxWlen && m_wlen2 >= MIN_WLEN )
{
// check if the sweep goes up or down
if( ch2Sweep > 0 )
{
m_wlen2 += m_wlen2 >> qAbs( ch2Sweep );
}
if( ch2Sweep < 0 )
{
m_wlen2 -= m_wlen2 >> qAbs( ch2Sweep );
}
}
}
// update framecounters
m_ch2Counter++;
m_ch2Counter = m_wlen2 ? m_ch2Counter % m_wlen2 : 0;
m_ch2EnvCounter++;
if( m_ch2EnvCounter >= ch2EnvLen )
{
m_ch2EnvCounter = 0;
m_ch2EnvValue--;
if( m_ch2EnvValue < 0 )
{
m_ch2EnvValue = ch2EnvLoop
? 15
: 0;
}
}
////////////////////////////////
// //
// channel 3 //
// //
////////////////////////////////
// make sure we don't overflow
m_ch3Counter = m_wlen3 ? m_ch3Counter % m_wlen3 : 0;
// render triangle wave
if( m_wlen3 <= m_maxWlen && ch3Enabled )
{
ch3Level = static_cast<int>( m_parent->m_ch3Volume.value() );
ch3 = m_wlen3 ? TRIANGLE_WAVETABLE[ ( m_ch3Counter * 32 ) / m_wlen3 ] : 0;
ch3 = ( ch3 * ch3Level ) / 15;
}
else ch3 = ch3Level = 0;
m_ch3Counter++;
////////////////////////////////
// //
// channel 4 //
// //
////////////////////////////////
// render pseudo noise
if( ch4Enabled )
{
ch4Level = m_parent->m_ch4EnvEnabled.value()
? ( static_cast<int>( m_parent->m_ch4Volume.value() ) * m_ch4EnvValue ) / 15
: static_cast<int>( m_parent->m_ch4Volume.value() );
ch4 = LFSR()
? ch4Level
: 0;
}
else ch4 = ch4Level = 0;
// update framecounters
m_ch4Counter++;
if( m_ch4Counter >= m_wlen4 )
{
m_ch4Counter = 0;
updateLFSR( m_parent->m_ch4NoiseMode.value() );
}
m_ch4EnvCounter++;
if( m_ch4EnvCounter >= ch4EnvLen )
{
m_ch4EnvCounter = 0;
m_ch4EnvValue--;
if( m_ch4EnvValue < 0 )
{
m_ch4EnvValue = ch4EnvLoop
? 15
: 0;
}
}
m_ch4SweepCounter++;
if( m_ch4SweepCounter >= ch4SweepRate )
{
m_ch4SweepCounter = 0;
if( ch4Sweep != 0 )
{
int freqN = nearestNoiseFreq( static_cast<float>( m_samplerate ) / m_wlen4 );
freqN = qBound( 0, freqN + ch4Sweep, 15 );
m_wlen4 = wavelength( NOISE_FREQS[ freqN ] );
if( m_wlen4 == 0 && ch4Sweep == 1 ) // a workaround for sweep getting stuck on 0 wavelength
{
while( m_wlen4 == 0 )
{
m_wlen4 = wavelength( NOISE_FREQS[ ++freqN ] );
}
}
}
}
////////////////////////////////
// //
// final stage - mixing //
// //
////////////////////////////////
auto pin1 = static_cast<float>(ch1 + ch2);
// add dithering noise
pin1 *= 1.0 + ( Oscillator::noiseSample( 0.0f ) * DITHER_AMP );
pin1 = pin1 / 30.0f;
pin1 = signedPow( pin1, NES_DIST );
pin1 = pin1 * 2.0f - 1.0f;
// simple first order iir filter, to simulate the frequency response falloff in nes analog audio output
pin1 = linearInterpolate( pin1, m_12Last, m_nsf );
m_12Last = pin1;
// compensate DC offset
pin1 += 1.0f - signedPow( static_cast<float>( ch1Level + ch2Level ) / 30.0f, NES_DIST );
pin1 *= NES_MIXING_12;
auto pin2 = static_cast<float>(ch3 + ch4);
// add dithering noise
pin2 *= 1.0 + ( Oscillator::noiseSample( 0.0f ) * DITHER_AMP );
pin2 = pin2 / 30.0f;
pin2 = signedPow( pin2, NES_DIST );
pin2 = pin2 * 2.0f - 1.0f;
// simple first order iir filter, to simulate the frequency response falloff in nes analog audio output
pin2 = linearInterpolate( pin2, m_34Last, m_nsf );
m_34Last = pin2;
// compensate DC offset
pin2 += 1.0f - signedPow( static_cast<float>( ch3Level + ch4Level ) / 30.0f, NES_DIST );
pin2 *= NES_MIXING_34;
const float mixdown = ( pin1 + pin2 ) * NES_MIXING_ALL * m_parent->m_masterVol.value();
buf[f][0] = mixdown;
buf[f][1] = mixdown;
} // end framebuffer loop
}
void NesObject::updateVibrato( float * freq )
{
float vibratoAmt = floorf( m_parent->m_vibrato.value() ) / 15.0f;
m_vibratoPhase++;
m_vibratoPhase %= 32;
float vibratoRatio = 1.0f + ( static_cast<float>( TRIANGLE_WAVETABLE[ m_vibratoPhase ] ) * 0.02f * vibratoAmt );
*freq *= vibratoRatio;
}
void NesObject::updatePitch()
{
float freq = m_nph->frequency();
// if vibrato is active, update vibrato
if( m_parent->m_vibrato.value() > 0 )
{
updateVibrato( &freq );
}
// check if frequency has changed, if so, update wavelengths of ch1-3
if( freq != m_lastNoteFreq )
{
m_wlen1 = wavelength( freq * m_parent->m_freq1 );
m_wlen2 = wavelength( freq * m_parent->m_freq2 );
m_wlen3 = wavelength( freq * m_parent->m_freq3 );
}
// noise channel can use either note freq or preset freqs
if( m_parent->m_ch4NoiseFreqMode.value() && freq != m_lastNoteFreq )
{
float f = freq * 2.0f;
if( m_parent->m_ch4NoiseQuantize.value() ) // note freq can be quantized to the preset freqs
{
f = NOISE_FREQS[ nearestNoiseFreq( f ) ];
}
m_wlen4 = wavelength( f );
}
if( ! m_parent->m_ch4NoiseFreqMode.value() && m_lastNoiseFreq != m_parent->m_ch4NoiseFreq.value() )
{
m_wlen4 = wavelength( NOISE_FREQS[ 15 - static_cast<int>( m_parent->m_ch4NoiseFreq.value() ) ] );
m_lastNoiseFreq = m_parent->m_ch4NoiseFreq.value();
}
m_lastNoteFreq = freq;
}
NesInstrument::NesInstrument( InstrumentTrack * instrumentTrack ) :
Instrument( instrumentTrack, &nes_plugin_descriptor ),
m_ch1Enabled(true, this, tr("Channel 1 enable")),
m_ch1Crs( 0.f, -24.f, 24.f, 1.f, this, tr( "Channel 1 coarse detune" ) ),
m_ch1Volume( 15.f, 0.f, 15.f, 1.f, this, tr( "Channel 1 volume" ) ),
m_ch1EnvEnabled(false, this, tr("Channel 1 envelope enable")),
m_ch1EnvLooped(false, this, tr("Channel 1 envelope loop")),
m_ch1EnvLen( 0.f, 0.f, 15.f, 1.f, this, tr( "Channel 1 envelope length" ) ),
m_ch1DutyCycle( 0, 0, 3, this, tr( "Channel 1 duty cycle" ) ),
m_ch1SweepEnabled(false, this, tr("Channel 1 sweep enable")),
m_ch1SweepAmt( 0.f, -7.f, 7.f, 1.f, this, tr( "Channel 1 sweep amount" ) ),
m_ch1SweepRate( 0.f, 0.f, 7.f, 1.f, this, tr( "Channel 1 sweep rate" ) ),
m_ch2Enabled(true, this, tr("Channel 2 enable")),
m_ch2Crs( 0.f, -24.f, 24.f, 1.f, this, tr( "Channel 2 coarse detune" ) ),
m_ch2Volume( 15.f, 0.f, 15.f, 1.f, this, tr( "Channel 2 volume" ) ),
m_ch2EnvEnabled(false, this, tr("Channel 2 envelope enable")),
m_ch2EnvLooped(false, this, tr("Channel 2 envelope loop")),
m_ch2EnvLen( 0.f, 0.f, 15.f, 1.f, this, tr( "Channel 2 envelope length" ) ),
m_ch2DutyCycle( 2, 0, 3, this, tr( "Channel 2 duty cycle" ) ),
m_ch2SweepEnabled(false, this, tr("Channel 2 sweep enable")),
m_ch2SweepAmt( 0.f, -7.f, 7.f, 1.f, this, tr( "Channel 2 sweep amount" ) ),
m_ch2SweepRate( 0.f, 0.f, 7.f, 1.f, this, tr( "Channel 2 sweep rate" ) ),
//channel 3
m_ch3Enabled(true, this, tr("Channel 3 enable")),
m_ch3Crs( 0.f, -24.f, 24.f, 1.f, this, tr( "Channel 3 coarse detune" ) ),
m_ch3Volume( 15.f, 0.f, 15.f, 1.f, this, tr( "Channel 3 volume" ) ),
//channel 4
m_ch4Enabled(false, this, tr("Channel 4 enable")),
m_ch4Volume( 15.f, 0.f, 15.f, 1.f, this, tr( "Channel 4 volume" ) ),
m_ch4EnvEnabled(false, this, tr("Channel 4 envelope enable")),
m_ch4EnvLooped(false, this, tr("Channel 4 envelope loop")),
m_ch4EnvLen( 0.f, 0.f, 15.f, 1.f, this, tr( "Channel 4 envelope length" ) ),
m_ch4NoiseMode(false, this, tr("Channel 4 noise mode")),
m_ch4NoiseFreqMode(false, this, tr("Channel 4 frequency mode")),
m_ch4NoiseFreq( 0.f, 0.f, 15.f, 1.f, this, tr( "Channel 4 noise frequency" ) ),
m_ch4Sweep( 0.f, -7.f, 7.f, 1.f, this, tr( "Channel 4 noise frequency sweep" ) ),
m_ch4NoiseQuantize(true, this, tr("Channel 4 quantize")),
//master
m_masterVol( 1.0f, 0.0f, 2.0f, 0.01f, this, tr( "Master volume" ) ),
m_vibrato( 0.0f, 0.0f, 15.0f, 1.0f, this, tr( "Vibrato" ) )
{
connect( &m_ch1Crs, SIGNAL( dataChanged() ), this, SLOT( updateFreq1() ), Qt::DirectConnection );
connect( &m_ch2Crs, SIGNAL( dataChanged() ), this, SLOT( updateFreq2() ), Qt::DirectConnection );
connect( &m_ch3Crs, SIGNAL( dataChanged() ), this, SLOT( updateFreq3() ), Qt::DirectConnection );
updateFreq1();
updateFreq2();
updateFreq3();
}
void NesInstrument::playNote( NotePlayHandle * n, SampleFrame* workingBuffer )
{
const fpp_t frames = n->framesLeftForCurrentPeriod();
const f_cnt_t offset = n->noteOffset();
if (!n->m_pluginData)
{
auto nes = new NesObject(this, Engine::audioEngine()->outputSampleRate(), n);
n->m_pluginData = nes;
}
auto nes = static_cast<NesObject*>(n->m_pluginData);
nes->renderOutput( workingBuffer + offset, frames );
applyRelease( workingBuffer, n );
}
void NesInstrument::deleteNotePluginData( NotePlayHandle * n )
{
delete static_cast<NesObject *>( n->m_pluginData );
}
void NesInstrument::saveSettings( QDomDocument & doc, QDomElement & element )
{
m_ch1Enabled.saveSettings( doc, element, "on1" );
m_ch1Crs.saveSettings( doc, element, "crs1" );
m_ch1Volume.saveSettings( doc, element, "vol1" );
m_ch1EnvEnabled.saveSettings( doc, element, "envon1" );
m_ch1EnvLooped.saveSettings( doc, element, "envloop1" );
m_ch1EnvLen.saveSettings( doc, element, "envlen1" );
m_ch1DutyCycle.saveSettings( doc, element, "dc1" );
m_ch1SweepEnabled.saveSettings( doc, element, "sweep1" );
m_ch1SweepAmt.saveSettings( doc, element, "swamt1" );
m_ch1SweepRate.saveSettings( doc, element, "swrate1" );
// channel 2
m_ch2Enabled.saveSettings( doc, element, "on2" );
m_ch2Crs.saveSettings( doc, element, "crs2" );
m_ch2Volume.saveSettings( doc, element, "vol2" );
m_ch2EnvEnabled.saveSettings( doc, element, "envon2" );
m_ch2EnvLooped.saveSettings( doc, element, "envloop2" );
m_ch2EnvLen.saveSettings( doc, element, "envlen2" );
m_ch2DutyCycle.saveSettings( doc, element, "dc2" );
m_ch2SweepEnabled.saveSettings( doc, element, "sweep2" );
m_ch2SweepAmt.saveSettings( doc, element, "swamt2" );
m_ch2SweepRate.saveSettings( doc, element, "swrate2" );
//channel 3
m_ch3Enabled.saveSettings( doc, element, "on3" );
m_ch3Crs.saveSettings( doc, element, "crs3" );
m_ch3Volume.saveSettings( doc, element, "vol3" );
//channel 4
m_ch4Enabled.saveSettings( doc, element, "on4" );
m_ch4Volume.saveSettings( doc, element, "vol4" );
m_ch4EnvEnabled.saveSettings( doc, element, "envon4" );
m_ch4EnvLooped.saveSettings( doc, element, "envloop4" );
m_ch4EnvLen.saveSettings( doc, element, "envlen4" );
m_ch4NoiseMode.saveSettings( doc, element, "nmode4" );
m_ch4NoiseFreqMode.saveSettings( doc, element, "nfrqmode4" );
m_ch4NoiseFreq.saveSettings( doc, element, "nfreq4" );
m_ch4NoiseQuantize.saveSettings( doc, element, "nq4" );
m_ch4Sweep.saveSettings( doc, element, "nswp4" );
//master
m_masterVol.saveSettings( doc, element, "vol" );
m_vibrato.saveSettings( doc, element, "vibr" );
}
void NesInstrument::loadSettings( const QDomElement & element )
{
m_ch1Enabled.loadSettings( element, "on1" );
m_ch1Crs.loadSettings( element, "crs1" );
m_ch1Volume.loadSettings( element, "vol1" );
m_ch1EnvEnabled.loadSettings( element, "envon1" );
m_ch1EnvLooped.loadSettings( element, "envloop1" );
m_ch1EnvLen.loadSettings( element, "envlen1" );
m_ch1DutyCycle.loadSettings( element, "dc1" );
m_ch1SweepEnabled.loadSettings( element, "sweep1" );
m_ch1SweepAmt.loadSettings( element, "swamt1" );
m_ch1SweepRate.loadSettings( element, "swrate1" );
// channel 2
m_ch2Enabled.loadSettings( element, "on2" );
m_ch2Crs.loadSettings( element, "crs2" );
m_ch2Volume.loadSettings( element, "vol2" );
m_ch2EnvEnabled.loadSettings( element, "envon2" );
m_ch2EnvLooped.loadSettings( element, "envloop2" );
m_ch2EnvLen.loadSettings( element, "envlen2" );
m_ch2DutyCycle.loadSettings( element, "dc2" );
m_ch2SweepEnabled.loadSettings( element, "sweep2" );
m_ch2SweepAmt.loadSettings( element, "swamt2" );
m_ch2SweepRate.loadSettings( element, "swrate2" );
//channel 3
m_ch3Enabled.loadSettings( element, "on3" );
m_ch3Crs.loadSettings( element, "crs3" );
m_ch3Volume.loadSettings( element, "vol3" );
//channel 4
m_ch4Enabled.loadSettings( element, "on4" );
m_ch4Volume.loadSettings( element, "vol4" );
m_ch4EnvEnabled.loadSettings( element, "envon4" );
m_ch4EnvLooped.loadSettings( element, "envloop4" );
m_ch4EnvLen.loadSettings( element, "envlen4" );
m_ch4NoiseMode.loadSettings( element, "nmode4" );
m_ch4NoiseFreqMode.loadSettings( element, "nfrqmode4" );
m_ch4NoiseFreq.loadSettings( element, "nfreq4" );
m_ch4NoiseQuantize.loadSettings( element, "nq4" );
m_ch4Sweep.loadSettings( element, "nswp4" );
//master
m_masterVol.loadSettings( element, "vol" );
m_vibrato.loadSettings( element, "vibr" );
}
QString NesInstrument::nodeName() const
{
return( nes_plugin_descriptor.name );
}
gui::PluginView* NesInstrument::instantiateView( QWidget * parent )
{
return( new gui::NesInstrumentView( this, parent ) );
}
void NesInstrument::updateFreq1()
{
m_freq1 = powf( 2, m_ch1Crs.value() / 12.0f );
}
void NesInstrument::updateFreq2()
{
m_freq2 = powf( 2, m_ch2Crs.value() / 12.0f );
}
void NesInstrument::updateFreq3()
{
m_freq3 = powf( 2, m_ch3Crs.value() / 12.0f );
}
namespace gui
{
NesInstrumentView::NesInstrumentView( Instrument * instrument, QWidget * parent ) :
InstrumentViewFixedSize( instrument, parent )
{
setAutoFillBackground( true );
QPalette pal;
static auto s_artwork = PLUGIN_NAME::getIconPixmap("artwork");
pal.setBrush(backgroundRole(), s_artwork);
setPalette( pal );
const int KNOB_Y1 = 24;
const int KNOB_Y2 = 81;
const int KNOB_Y3 = 138;
const int KNOB_Y4 = 195;
const int KNOB_X1 = 12;
const int KNOB_X2 = 46;
const int KNOB_X3 = 84;
const int KNOB_X4 = 117;
const int KNOB_X5 = 151;
const int KNOB_X6 = 172;
const int KNOB_X7 = 206;
// channel 1
makeknob( m_ch1VolumeKnob, KNOB_X1, KNOB_Y1, tr( "Volume" ), "", "" )
makeknob( m_ch1CrsKnob, KNOB_X2, KNOB_Y1, tr( "Coarse detune" ), "", "" )
makeknob( m_ch1EnvLenKnob, KNOB_X3, KNOB_Y1, tr( "Envelope length" ), "", "" )
makenesled( m_ch1EnabledBtn, KNOB_X1, KNOB_Y1 - 12, tr( "Enable channel 1" ) )
makenesled( m_ch1EnvEnabledBtn, KNOB_X3, KNOB_Y1 - 12, tr( "Enable envelope 1" ) )
makenesled( m_ch1EnvLoopedBtn, 129, KNOB_Y1 - 12, tr( "Enable envelope 1 loop" ) )
makenesled( m_ch1SweepEnabledBtn, KNOB_X6, KNOB_Y1 - 12, tr( "Enable sweep 1" ) )
makeknob( m_ch1SweepAmtKnob, KNOB_X6, KNOB_Y1, tr( "Sweep amount" ), "", "" )
makeknob( m_ch1SweepRateKnob, KNOB_X7, KNOB_Y1, tr( "Sweep rate" ), "", "" )
int dcx = 117;
makedcled( ch1_dc1, dcx, 42, tr( "12.5% Duty cycle" ), "nesdc1_on" )
dcx += 13;
makedcled( ch1_dc2, dcx, 42, tr( "25% Duty cycle" ), "nesdc2_on" )
dcx += 13;
makedcled( ch1_dc3, dcx, 42, tr( "50% Duty cycle" ), "nesdc3_on" )
dcx += 13;
makedcled( ch1_dc4, dcx, 42, tr( "75% Duty cycle" ), "nesdc4_on" )
m_ch1DutyCycleGrp = new automatableButtonGroup( this );
m_ch1DutyCycleGrp -> addButton( ch1_dc1 );
m_ch1DutyCycleGrp -> addButton( ch1_dc2 );
m_ch1DutyCycleGrp -> addButton( ch1_dc3 );
m_ch1DutyCycleGrp -> addButton( ch1_dc4 );
// channel 2
makeknob( m_ch2VolumeKnob, KNOB_X1, KNOB_Y2, tr( "Volume" ), "", "" )
makeknob( m_ch2CrsKnob, KNOB_X2, KNOB_Y2, tr( "Coarse detune" ), "", "" )
makeknob( m_ch2EnvLenKnob, KNOB_X3, KNOB_Y2, tr( "Envelope length" ), "", "" )
makenesled( m_ch2EnabledBtn, KNOB_X1, KNOB_Y2 - 12, tr( "Enable channel 2" ) )
makenesled( m_ch2EnvEnabledBtn, KNOB_X3, KNOB_Y2 - 12, tr( "Enable envelope 2" ) )
makenesled( m_ch2EnvLoopedBtn, 129, KNOB_Y2 - 12, tr( "Enable envelope 2 loop" ) )
makenesled( m_ch2SweepEnabledBtn, KNOB_X6, KNOB_Y2 - 12, tr( "Enable sweep 2" ) )
makeknob( m_ch2SweepAmtKnob, KNOB_X6, KNOB_Y2, tr( "Sweep amount" ), "", "" )
makeknob( m_ch2SweepRateKnob, KNOB_X7, KNOB_Y2, tr( "Sweep rate" ), "", "" )
dcx = 117;
makedcled( ch2_dc1, dcx, 99, tr( "12.5% Duty cycle" ), "nesdc1_on" )
dcx += 13;
makedcled( ch2_dc2, dcx, 99, tr( "25% Duty cycle" ), "nesdc2_on" )
dcx += 13;
makedcled( ch2_dc3, dcx, 99, tr( "50% Duty cycle" ), "nesdc3_on" )
dcx += 13;
makedcled( ch2_dc4, dcx, 99, tr( "75% Duty cycle" ), "nesdc4_on" )
m_ch2DutyCycleGrp = new automatableButtonGroup( this );
m_ch2DutyCycleGrp -> addButton( ch2_dc1 );
m_ch2DutyCycleGrp -> addButton( ch2_dc2 );
m_ch2DutyCycleGrp -> addButton( ch2_dc3 );
m_ch2DutyCycleGrp -> addButton( ch2_dc4 );
//channel 3
makenesled( m_ch3EnabledBtn, KNOB_X1, KNOB_Y3 - 12, tr( "Enable channel 3" ) )
makeknob( m_ch3VolumeKnob, KNOB_X1, KNOB_Y3, tr( "Volume" ), "", "" )
makeknob( m_ch3CrsKnob, KNOB_X2, KNOB_Y3, tr( "Coarse detune" ), "", "" )
//channel 4
makeknob( m_ch4VolumeKnob, KNOB_X1, KNOB_Y4, tr( "Volume" ), "", "" )
makeknob( m_ch4NoiseFreqKnob, KNOB_X2, KNOB_Y4, tr( "Noise Frequency" ), "", "" )
makeknob( m_ch4EnvLenKnob, KNOB_X3, KNOB_Y4, tr( "Envelope length" ), "", "" )
makeknob( m_ch4SweepKnob, KNOB_X4, KNOB_Y4, tr( "Frequency sweep" ), "", "" )
makenesled( m_ch4EnabledBtn, KNOB_X1, KNOB_Y4 - 12, tr( "Enable channel 4" ) )
makenesled( m_ch4EnvEnabledBtn, KNOB_X3, KNOB_Y4 - 12, tr( "Enable envelope 4" ) )
makenesled( m_ch4EnvLoopedBtn, 129, KNOB_Y4 - 12, tr( "Enable envelope 4 loop" ) )
makenesled( m_ch4NoiseQuantizeBtn, 162, KNOB_Y4 - 12, tr( "Quantize noise frequency when using note frequency" ) )
makenesled( m_ch4NoiseFreqModeBtn, 148, 203, tr( "Use note frequency for noise" ) )
makenesled( m_ch4NoiseModeBtn, 148, 224, tr( "Noise mode" ) )
//master
makeknob( m_masterVolKnob, KNOB_X4, KNOB_Y3, tr( "Master volume" ), "", "" )
makeknob( m_vibratoKnob, KNOB_X5, KNOB_Y3, tr( "Vibrato" ), "", "" )
}
void NesInstrumentView::modelChanged()
{
auto nes = castModel<NesInstrument>();
m_ch1EnabledBtn->setModel( &nes->m_ch1Enabled );
m_ch1CrsKnob->setModel( &nes->m_ch1Crs );
m_ch1VolumeKnob->setModel( &nes->m_ch1Volume );
m_ch1EnvEnabledBtn->setModel( &nes->m_ch1EnvEnabled );
m_ch1EnvLoopedBtn->setModel( &nes->m_ch1EnvLooped );
m_ch1EnvLenKnob->setModel( &nes->m_ch1EnvLen );
m_ch1DutyCycleGrp->setModel( &nes->m_ch1DutyCycle );
m_ch1SweepEnabledBtn->setModel( &nes->m_ch1SweepEnabled );
m_ch1SweepAmtKnob->setModel( &nes->m_ch1SweepAmt );
m_ch1SweepRateKnob->setModel( &nes->m_ch1SweepRate );
// channel 2
m_ch2EnabledBtn->setModel( &nes->m_ch2Enabled );
m_ch2CrsKnob->setModel( &nes->m_ch2Crs );
m_ch2VolumeKnob->setModel( &nes->m_ch2Volume );
m_ch2EnvEnabledBtn->setModel( &nes->m_ch2EnvEnabled );
m_ch2EnvLoopedBtn->setModel( &nes->m_ch2EnvLooped );
m_ch2EnvLenKnob->setModel( &nes->m_ch2EnvLen );
m_ch2DutyCycleGrp->setModel( &nes->m_ch2DutyCycle );
m_ch2SweepEnabledBtn->setModel( &nes->m_ch2SweepEnabled );
m_ch2SweepAmtKnob->setModel( &nes->m_ch2SweepAmt );
m_ch2SweepRateKnob->setModel( &nes->m_ch2SweepRate );
//channel 3
m_ch3EnabledBtn->setModel( &nes->m_ch3Enabled );
m_ch3CrsKnob->setModel( &nes->m_ch3Crs );
m_ch3VolumeKnob->setModel( &nes->m_ch3Volume );
//channel 4
m_ch4EnabledBtn->setModel( &nes->m_ch4Enabled );
m_ch4VolumeKnob->setModel( &nes->m_ch4Volume );
m_ch4EnvEnabledBtn->setModel( &nes->m_ch4EnvEnabled );
m_ch4EnvLoopedBtn->setModel( &nes->m_ch4EnvLooped );
m_ch4EnvLenKnob->setModel( &nes->m_ch4EnvLen );
m_ch4NoiseModeBtn->setModel( &nes->m_ch4NoiseMode );
m_ch4NoiseFreqModeBtn->setModel( &nes->m_ch4NoiseFreqMode );
m_ch4NoiseFreqKnob->setModel( &nes->m_ch4NoiseFreq );
m_ch4SweepKnob->setModel( &nes->m_ch4Sweep );
m_ch4NoiseQuantizeBtn->setModel( &nes->m_ch4NoiseQuantize );
//master
m_masterVolKnob->setModel( &nes->m_masterVol );
m_vibratoKnob->setModel( &nes->m_vibrato );
}
} // namespace gui
extern "C"
{
// necessary for getting instance out of shared lib
PLUGIN_EXPORT Plugin * lmms_plugin_main( Model *m, void * _data )
{
return( new NesInstrument( static_cast<InstrumentTrack *>( m ) ) );
}
}
} // namespace lmms
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