1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/**
bespoke synth, a software modular synthesizer
Copyright (C) 2021 Ryan Challinor (contact: awwbees@gmail.com)
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 3 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. If not, see <http://www.gnu.org/licenses/>.
**/
//
// SampleVoice.cpp
// modularSynth
//
// Created by Ryan Challinor on 2/5/14.
//
//
#include "SampleVoice.h"
#include "SynthGlobals.h"
#include "Scale.h"
#include "Profiler.h"
#include "ChannelBuffer.h"
SampleVoice::SampleVoice(IDrawableModule* owner)
: mOwner(owner)
{
}
SampleVoice::~SampleVoice()
{
}
bool SampleVoice::IsDone(double time)
{
return mAdsr.IsDone(time);
}
bool SampleVoice::Process(double time, ChannelBuffer* out, int oversampling)
{
PROFILER(SampleVoice);
if (IsDone(time) ||
mVoiceParams->mSampleData == nullptr ||
mVoiceParams->mSampleLength == 0)
return false;
float volSq = mVoiceParams->mVol * mVoiceParams->mVol;
for (int pos = 0; pos < out->BufferSize(); ++pos)
{
if (mOwner)
mOwner->ComputeSliders(pos);
if (mPos <= mVoiceParams->mSampleLength || mVoiceParams->mLoop)
{
float freq = TheScale->PitchToFreq(GetPitch(pos));
float speed;
if (mVoiceParams->mDetectedFreq != -1)
speed = freq / mVoiceParams->mDetectedFreq;
else
speed = freq / TheScale->PitchToFreq(TheScale->ScaleRoot() + 48);
float sample = GetInterpolatedSample(mPos, mVoiceParams->mSampleData, mVoiceParams->mSampleLength) * mAdsr.Value(time) * volSq;
if (out->NumActiveChannels() == 1)
{
out->GetChannel(0)[pos] += sample;
}
else
{
out->GetChannel(0)[pos] += sample * GetLeftPanGain(GetPan());
out->GetChannel(1)[pos] += sample * GetRightPanGain(GetPan());
}
mPos += speed;
}
time += gInvSampleRateMs;
}
return true;
}
void SampleVoice::Start(double time, float target)
{
mPos = 0;
mAdsr.Start(time, target, mVoiceParams->mAdsr);
}
void SampleVoice::Stop(double time)
{
mAdsr.Stop(time);
}
void SampleVoice::ClearVoice()
{
mAdsr.Clear();
}
void SampleVoice::SetVoiceParams(IVoiceParams* params)
{
mVoiceParams = dynamic_cast<SampleVoiceParams*>(params);
}
|
