|
andrewm@0
|
1 /*
|
|
andrewm@0
|
2 This code accompanies the textbook:
|
|
andrewm@0
|
3
|
|
andrewm@0
|
4 Digital Audio Effects: Theory, Implementation and Application
|
|
andrewm@0
|
5 Joshua D. Reiss and Andrew P. McPherson
|
|
andrewm@0
|
6
|
|
andrewm@0
|
7 ---
|
|
andrewm@0
|
8
|
|
andrewm@0
|
9 Compressor: dynamic range compression effect
|
|
andrewm@0
|
10 See textbook Chapter 6: Dynamics Processing
|
|
andrewm@0
|
11
|
|
andrewm@0
|
12 Code by Joshua Reiss, Brecht de Man and Andrew McPherson
|
|
andrewm@0
|
13
|
|
andrewm@0
|
14 ---
|
|
andrewm@0
|
15
|
|
andrewm@0
|
16 This program is free software: you can redistribute it and/or modify
|
|
andrewm@0
|
17 it under the terms of the GNU General Public License as published by
|
|
andrewm@0
|
18 the Free Software Foundation, either version 3 of the License, or
|
|
andrewm@0
|
19 (at your option) any later version.
|
|
andrewm@0
|
20
|
|
andrewm@0
|
21 This program is distributed in the hope that it will be useful,
|
|
andrewm@0
|
22 but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
andrewm@0
|
23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
andrewm@0
|
24 GNU General Public License for more details.
|
|
andrewm@0
|
25
|
|
andrewm@0
|
26 You should have received a copy of the GNU General Public License
|
|
andrewm@0
|
27 along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
andrewm@0
|
28 */
|
|
andrewm@0
|
29
|
|
andrewm@0
|
30 #ifndef __PLUGINPROCESSOR_H_88534BAA__
|
|
andrewm@0
|
31 #define __PLUGINPROCESSOR_H_88534BAA__
|
|
andrewm@0
|
32
|
|
andrewm@0
|
33 #include "../JuceLibraryCode/JuceHeader.h"
|
|
andrewm@0
|
34 #include <math.h>
|
|
andrewm@0
|
35 class CompressorAudioProcessor : public AudioProcessor
|
|
andrewm@0
|
36 {
|
|
andrewm@0
|
37 public:
|
|
andrewm@0
|
38 CompressorAudioProcessor();
|
|
andrewm@0
|
39 ~CompressorAudioProcessor();
|
|
andrewm@0
|
40
|
|
andrewm@0
|
41 int bufferSize;
|
|
andrewm@0
|
42
|
|
andrewm@0
|
43 void prepareToPlay (double sampleRate, int samplesPerBlock);
|
|
andrewm@0
|
44 void releaseResources();
|
|
andrewm@0
|
45 void processBlock (AudioSampleBuffer& buffer, MidiBuffer& midiMessages);
|
|
andrewm@0
|
46
|
|
andrewm@0
|
47 void compressor(AudioSampleBuffer &buffer, int m);// compressor functions
|
|
andrewm@0
|
48
|
|
andrewm@0
|
49 template <class T> const T& max ( const T& a, const T& b );
|
|
andrewm@0
|
50
|
|
andrewm@0
|
51 AudioProcessorEditor* createEditor();
|
|
andrewm@0
|
52
|
|
andrewm@0
|
53 bool hasEditor() const;
|
|
andrewm@0
|
54
|
|
andrewm@0
|
55 AudioPlayHead::CurrentPositionInfo lastPosInfo;
|
|
andrewm@0
|
56
|
|
andrewm@0
|
57 int round(float inn);
|
|
andrewm@0
|
58 const String getName() const;
|
|
andrewm@0
|
59
|
|
andrewm@0
|
60 int getNumParameters();
|
|
andrewm@0
|
61
|
|
andrewm@0
|
62 float getParameter (int index);
|
|
andrewm@0
|
63 void setParameter (int index, float newValue);
|
|
andrewm@0
|
64
|
|
andrewm@0
|
65 const String getParameterName (int index);
|
|
andrewm@0
|
66 const String getParameterText (int index);
|
|
andrewm@0
|
67
|
|
andrewm@0
|
68 const String getInputChannelName (int channelIndex) const;
|
|
andrewm@0
|
69 const String getOutputChannelName (int channelIndex) const;
|
|
andrewm@0
|
70 bool isInputChannelStereoPair (int index) const;
|
|
andrewm@0
|
71 bool isOutputChannelStereoPair (int index) const;
|
|
andrewm@0
|
72
|
|
andrewm@0
|
73 bool silenceInProducesSilenceOut() const;
|
|
andrewm@0
|
74 double getTailLengthSeconds() const;
|
|
andrewm@0
|
75 bool acceptsMidi() const;
|
|
andrewm@0
|
76 bool producesMidi() const;
|
|
andrewm@0
|
77
|
|
andrewm@0
|
78 int getNumPrograms();
|
|
andrewm@0
|
79 int getCurrentProgram();
|
|
andrewm@0
|
80 void setCurrentProgram (int index);
|
|
andrewm@0
|
81 const String getProgramName (int index);
|
|
andrewm@0
|
82 void changeProgramName (int index, const String& newName);
|
|
andrewm@0
|
83
|
|
andrewm@0
|
84 //==============================================================================
|
|
andrewm@0
|
85 void getStateInformation (MemoryBlock& destData);
|
|
andrewm@0
|
86 void setStateInformation (const void* data, int sizeInBytes);
|
|
andrewm@0
|
87
|
|
andrewm@0
|
88 float getThreshold();
|
|
andrewm@0
|
89 float getRatio();
|
|
andrewm@0
|
90 float getGain();
|
|
andrewm@0
|
91 float getAttackTime();
|
|
andrewm@0
|
92 float getReleaseTime();
|
|
andrewm@0
|
93 void setThreshold(float T);
|
|
andrewm@0
|
94 void setGain(float G);
|
|
andrewm@0
|
95 void setRatio(float R);
|
|
andrewm@0
|
96 void setAttackTime(float A);
|
|
andrewm@0
|
97 void setReleaseTime(float R);
|
|
andrewm@0
|
98 void resetAll();
|
|
andrewm@0
|
99
|
|
andrewm@0
|
100 // parameters
|
|
andrewm@0
|
101
|
|
andrewm@0
|
102 bool compressorONOFF;
|
|
andrewm@0
|
103 int M;
|
|
andrewm@0
|
104 bool autoTime;
|
|
andrewm@0
|
105
|
|
andrewm@0
|
106 private:
|
|
andrewm@0
|
107 AudioSampleBuffer inputBuffer;
|
|
andrewm@0
|
108
|
|
andrewm@0
|
109 // int bufferSize;
|
|
andrewm@0
|
110 //these are used to persist UI's size- values are stored along with filter's other parameters, and UI component will update them when it gets resized.
|
|
andrewm@0
|
111 int lastUIWidth, lastUIHeight;
|
|
andrewm@0
|
112
|
|
andrewm@0
|
113 HeapBlock <float> x_g, x_l,y_g, y_l,c;// input, output, control
|
|
andrewm@0
|
114 // parameters
|
|
andrewm@0
|
115 float ratio,threshold,makeUpGain,tauAttack,tauRelease,alphaAttack,alphaRelease,yL_prev;
|
|
andrewm@0
|
116 int nhost;
|
|
andrewm@0
|
117 int samplerate;
|
|
andrewm@0
|
118
|
|
andrewm@0
|
119 JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (CompressorAudioProcessor);
|
|
andrewm@0
|
120 };
|
|
andrewm@0
|
121
|
|
andrewm@0
|
122 #endif // __PLUGINPROCESSOR_H_88534BAA__
|
