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Diffstat (limited to 'openFrameworks/openFrameworksExamples/windows/ofMaximExampleVS2010/src/maximilian.cpp')
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1 files changed, 1026 insertions, 0 deletions
diff --git a/openFrameworks/openFrameworksExamples/windows/ofMaximExampleVS2010/src/maximilian.cpp b/openFrameworks/openFrameworksExamples/windows/ofMaximExampleVS2010/src/maximilian.cpp new file mode 100755 index 0000000..4814836 --- /dev/null +++ b/openFrameworks/openFrameworksExamples/windows/ofMaximExampleVS2010/src/maximilian.cpp @@ -0,0 +1,1026 @@ + +/* + * maximilian.cpp + * platform independent synthesis library using portaudio or rtaudio + * + * Created by Mick Grierson on 29/12/2009. + * Copyright 2009 Mick Grierson & Strangeloop Limited. All rights reserved. + * Thanks to the Goldsmiths Creative Computing Team. + * Special thanks to Arturo Castro for the PortAudio implementation. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#include "maximilian.h" +#include "math.h" + + +//int channels=2; +//int samplerate=44100; +//int buffersize=1024; +float chandiv= 1; + +int maxiSettings::sampleRate = 44100; +int maxiSettings::channels = 2; +int maxiSettings::bufferSize = 1024; + +double sineBuffer[514]={0,0.012268,0.024536,0.036804,0.049042,0.06131,0.073547,0.085785,0.097992,0.1102,0.12241,0.13455,0.1467,0.15884,0.17093,0.18301,0.19507,0.20709,0.21909,0.23105,0.24295,0.25485,0.26669,0.2785,0.29025,0.30197,0.31366,0.32529,0.33685,0.34839,0.35986,0.37128,0.38266,0.39395,0.40521,0.41641,0.42752,0.4386,0.44958,0.46051,0.47137,0.48215,0.49286,0.50351,0.51407,0.52457,0.53497,0.54529,0.55554,0.5657,0.57578,0.58575,0.59567,0.60547,0.6152,0.62482,0.63437,0.6438,0.65314,0.66238,0.67151,0.68057,0.68951,0.69833,0.70706,0.7157,0.72421,0.7326,0.74091,0.74908,0.75717,0.76514,0.77298,0.7807,0.7883,0.79581,0.80316,0.81042,0.81754,0.82455,0.83142,0.8382,0.84482,0.85132,0.8577,0.86392,0.87006,0.87604,0.88187,0.8876,0.89319,0.89862,0.90396,0.90912,0.91415,0.91907,0.92383,0.92847,0.93295,0.93729,0.9415,0.94556,0.94949,0.95325,0.95691,0.96039,0.96375,0.96692,0.97,0.9729,0.97565,0.97827,0.98074,0.98306,0.98523,0.98724,0.98914,0.99084,0.99243,0.99387,0.99515,0.99628,0.99725,0.99808,0.99875,0.99927,0.99966,0.99988,0.99997,0.99988,0.99966,0.99927,0.99875,0.99808,0.99725,0.99628,0.99515,0.99387,0.99243,0.99084,0.98914,0.98724,0.98523,0.98306,0.98074,0.97827,0.97565,0.9729,0.97,0.96692,0.96375,0.96039,0.95691,0.95325,0.94949,0.94556,0.9415,0.93729,0.93295,0.92847,0.92383,0.91907,0.91415,0.90912,0.90396,0.89862,0.89319,0.8876,0.88187,0.87604,0.87006,0.86392,0.8577,0.85132,0.84482,0.8382,0.83142,0.82455,0.81754,0.81042,0.80316,0.79581,0.7883,0.7807,0.77298,0.76514,0.75717,0.74908,0.74091,0.7326,0.72421,0.7157,0.70706,0.69833,0.68951,0.68057,0.67151,0.66238,0.65314,0.6438,0.63437,0.62482,0.6152,0.60547,0.59567,0.58575,0.57578,0.5657,0.55554,0.54529,0.53497,0.52457,0.51407,0.50351,0.49286,0.48215,0.47137,0.46051,0.44958,0.4386,0.42752,0.41641,0.40521,0.39395,0.38266,0.37128,0.35986,0.34839,0.33685,0.32529,0.31366,0.30197,0.29025,0.2785,0.26669,0.25485,0.24295,0.23105,0.21909,0.20709,0.19507,0.18301,0.17093,0.15884,0.1467,0.13455,0.12241,0.1102,0.097992,0.085785,0.073547,0.06131,0.049042,0.036804,0.024536,0.012268,0,-0.012268,-0.024536,-0.036804,-0.049042,-0.06131,-0.073547,-0.085785,-0.097992,-0.1102,-0.12241,-0.13455,-0.1467,-0.15884,-0.17093,-0.18301,-0.19507,-0.20709,-0.21909,-0.23105,-0.24295,-0.25485,-0.26669,-0.2785,-0.29025,-0.30197,-0.31366,-0.32529,-0.33685,-0.34839,-0.35986,-0.37128,-0.38266,-0.39395,-0.40521,-0.41641,-0.42752,-0.4386,-0.44958,-0.46051,-0.47137,-0.48215,-0.49286,-0.50351,-0.51407,-0.52457,-0.53497,-0.54529,-0.55554,-0.5657,-0.57578,-0.58575,-0.59567,-0.60547,-0.6152,-0.62482,-0.63437,-0.6438,-0.65314,-0.66238,-0.67151,-0.68057,-0.68951,-0.69833,-0.70706,-0.7157,-0.72421,-0.7326,-0.74091,-0.74908,-0.75717,-0.76514,-0.77298,-0.7807,-0.7883,-0.79581,-0.80316,-0.81042,-0.81754,-0.82455,-0.83142,-0.8382,-0.84482,-0.85132,-0.8577,-0.86392,-0.87006,-0.87604,-0.88187,-0.8876,-0.89319,-0.89862,-0.90396,-0.90912,-0.91415,-0.91907,-0.92383,-0.92847,-0.93295,-0.93729,-0.9415,-0.94556,-0.94949,-0.95325,-0.95691,-0.96039,-0.96375,-0.96692,-0.97,-0.9729,-0.97565,-0.97827,-0.98074,-0.98306,-0.98523,-0.98724,-0.98914,-0.99084,-0.99243,-0.99387,-0.99515,-0.99628,-0.99725,-0.99808,-0.99875,-0.99927,-0.99966,-0.99988,-0.99997,-0.99988,-0.99966,-0.99927,-0.99875,-0.99808,-0.99725,-0.99628,-0.99515,-0.99387,-0.99243,-0.99084,-0.98914,-0.98724,-0.98523,-0.98306,-0.98074,-0.97827,-0.97565,-0.9729,-0.97,-0.96692,-0.96375,-0.96039,-0.95691,-0.95325,-0.94949,-0.94556,-0.9415,-0.93729,-0.93295,-0.92847,-0.92383,-0.91907,-0.91415,-0.90912,-0.90396,-0.89862,-0.89319,-0.8876,-0.88187,-0.87604,-0.87006,-0.86392,-0.8577,-0.85132,-0.84482,-0.8382,-0.83142,-0.82455,-0.81754,-0.81042,-0.80316,-0.79581,-0.7883,-0.7807,-0.77298,-0.76514,-0.75717,-0.74908,-0.74091,-0.7326,-0.72421,-0.7157,-0.70706,-0.69833,-0.68951,-0.68057,-0.67151,-0.66238,-0.65314,-0.6438,-0.63437,-0.62482,-0.6152,-0.60547,-0.59567,-0.58575,-0.57578,-0.5657,-0.55554,-0.54529,-0.53497,-0.52457,-0.51407,-0.50351,-0.49286,-0.48215,-0.47137,-0.46051,-0.44958,-0.4386,-0.42752,-0.41641,-0.40521,-0.39395,-0.38266,-0.37128,-0.35986,-0.34839,-0.33685,-0.32529,-0.31366,-0.30197,-0.29025,-0.2785,-0.26669,-0.25485,-0.24295,-0.23105,-0.21909,-0.20709,-0.19507,-0.18301,-0.17093,-0.15884,-0.1467,-0.13455,-0.12241,-0.1102,-0.097992,-0.085785,-0.073547,-0.06131,-0.049042,-0.036804,-0.024536,-0.012268,0,0.012268 +}; + +double mtofarray[129]={0, 8.661957, 9.177024, 9.722718, 10.3, 10.913383, 11.562325, 12.25, 12.978271, 13.75, 14.567617, 15.433853, 16.351599, 17.323914, 18.354048, 19.445436, 20.601723, 21.826765, 23.124651, 24.5, 25.956543, 27.5, 29.135235, 30.867706, 32.703197, 34.647827, 36.708096, 38.890873, 41.203445, 43.65353, 46.249302, 49., 51.913086, 55., 58.27047, 61.735413, 65.406395, 69.295654, 73.416191, 77.781746, 82.406891, 87.30706, 92.498604, 97.998856, 103.826172, 110., 116.540939, 123.470825, 130.81279, 138.591309, 146.832382, 155.563492, 164.813782, 174.61412, 184.997208, 195.997711, 207.652344, 220., 233.081879, 246.94165, 261.62558, 277.182617,293.664764, 311.126984, 329.627563, 349.228241, 369.994415, 391.995422, 415.304688, 440., 466.163757, 493.883301, 523.25116, 554.365234, 587.329529, 622.253967, 659.255127, 698.456482, 739.988831, 783.990845, 830.609375, 880., 932.327515, 987.766602, 1046.502319, 1108.730469, 1174.659058, 1244.507935, 1318.510254, 1396.912964, 1479.977661, 1567.981689, 1661.21875, 1760., 1864.655029, 1975.533203, 2093.004639, 2217.460938, 2349.318115, 2489.015869, 2637.020508, 2793.825928, 2959.955322, 3135.963379, 3322.4375, 3520., 3729.31, 3951.066406, 4186.009277, 4434.921875, 4698.63623, 4978.031738, 5274.041016, 5587.651855, 5919.910645, 6271.926758, 6644.875, 7040., 7458.620117, 7902.132812, 8372.018555, 8869.84375, 9397.272461, 9956.063477, 10548.082031, 11175.303711, 11839.821289, 12543.853516, 13289.75}; + +void setup();//use this to do any initialisation if you want. + +void play(double *channels);//run dac! + +maxiOsc::maxiOsc(){ + phase = 0.0; +// memset(phases,0,500); +// memset(freqs,0,500); +} + +double maxiOsc::noise() { + //always the same unless you seed it. + float r = rand()/(float)RAND_MAX; + output=r*2-1; + return(output); +} + +void maxiOsc::phaseReset(double phaseIn) { + phase=phaseIn; + +} + +double maxiOsc::sinewave(double frequency) { + output=sin (phase*(TWOPI)); + if ( phase >= 1.0 ) phase -= 1.0; + phase += (1./(maxiSettings::sampleRate/(frequency))); + return(output); + +} + +double maxiOsc::sinebuf4(double frequency) { + double remainder; + double a,b,c,d,a1,a2,a3; + phase += 512./(maxiSettings::sampleRate/(frequency)); + if ( phase >= 511 ) phase -=512; + remainder = phase - floor(phase); + + if (phase==0) { + a=sineBuffer[(long) 512]; + b=sineBuffer[(long) phase]; + c=sineBuffer[(long) phase+1]; + d=sineBuffer[(long) phase+2]; + + } else { + a=sineBuffer[(long) phase-1]; + b=sineBuffer[(long) phase]; + c=sineBuffer[(long) phase+1]; + d=sineBuffer[(long) phase+2]; + + } + + a1 = 0.5f * (c - a); + a2 = a - 2.5 * b + 2.f * c - 0.5f * d; + a3 = 0.5f * (d - a) + 1.5f * (b - c); + output = double (((a3 * remainder + a2) * remainder + a1) * remainder + b); + return(output); +} + +double maxiOsc::sinebuf(double frequency) { + double remainder; + phase += 512./(maxiSettings::sampleRate/(frequency*chandiv)); + if ( phase >= 511 ) phase -=512; + remainder = phase - floor(phase); + output = (double) ((1-remainder) * sineBuffer[1+ (long) phase] + remainder * sineBuffer[2+(long) phase]); + return(output); +} + +double maxiOsc::coswave(double frequency) { + output=cos (phase*(TWOPI)); + if ( phase >= 1.0 ) phase -= 1.0; + phase += (1./(maxiSettings::sampleRate/(frequency))); + return(output); + +} + +double maxiOsc::phasor(double frequency) { + output=phase; + if ( phase >= 1.0 ) phase -= 1.0; + phase += (1./(maxiSettings::sampleRate/(frequency))); + return(output); +} + +double maxiOsc::square(double frequency) { + if (phase<0.5) output=-1; + if (phase>0.5) output=1; + if ( phase >= 1.0 ) phase -= 1.0; + phase += (1./(maxiSettings::sampleRate/(frequency))); + return(output); +} + +double maxiOsc::pulse(double frequency, double duty) { + if (duty<0.) duty=0; + if (duty>1.) duty=1; + if ( phase >= 1.0 ) phase -= 1.0; + phase += (1./(maxiSettings::sampleRate/(frequency))); + if (phase<duty) output=-1.; + if (phase>duty) output=1.; + return(output); +} + +double maxiOsc::phasor(double frequency, double startphase, double endphase) { + output=phase; + if (phase<startphase) { + phase=startphase; + } + if ( phase >= endphase ) phase = startphase; + phase += ((endphase-startphase)/(maxiSettings::sampleRate/(frequency))); + return(output); +} + + +double maxiOsc::saw(double frequency) { + + output=phase; + if ( phase >= 1.0 ) phase -= 2.0; + phase += (1./(maxiSettings::sampleRate/(frequency))); + return(output); + +} + +double maxiOsc::triangle(double frequency) { + if ( phase >= 1.0 ) phase -= 1.0; + phase += (1./(maxiSettings::sampleRate/(frequency))); + if (phase <= 0.5 ) { + output =((phase)*4)-1; + } else { + output =((0.5-phase)*4)-1; + } + return(output); + +} + +//I like this. +double maxiEnvelope::line(int numberofsegments,double segments[1000]) { + if (isPlaying==1) {//only make a sound once you've been triggered + + period=2./(segments[valindex+1]*0.004); + nextval=segments[valindex+2]; + currentval=segments[valindex]; + if (currentval-amplitude > 0.0000001 && valindex < numberofsegments) { + amplitude += ((currentval-startval)/(maxiSettings::sampleRate/period)); + } else if (currentval-amplitude < -0.0000001 && valindex < numberofsegments) { + amplitude -= (((currentval-startval)*(-1))/(maxiSettings::sampleRate/period)); + } else if (valindex >numberofsegments-1) { + valindex=numberofsegments-2; + } else { + valindex=valindex+2; + startval=currentval; + } + output=amplitude; + + } + else { + output=0; + + } + return(output); +} + +//and this +void maxiEnvelope::trigger(int index, double amp) { + isPlaying=1;//ok the envelope is being used now. + valindex=index; + amplitude=amp; + +} + +//and this + +maxiDelayline::maxiDelayline() { + memset( memory, 0, 88200*sizeof (double) ); + +} + + +double maxiDelayline::dl(double input, int size, double feedback) { + if ( phase >=size ) { + phase = 0; + } + output=memory[phase]; + memory[phase]=(memory[phase]*feedback)+(input*feedback)*0.5; + phase+=1; + return(output); + +} + +double maxiDelayline::dl(double input, int size, double feedback, int position) { + if ( phase >=size ) phase = 0; + if ( position >=size ) position = 0; + output=memory[position]; + memory[phase]=(memory[phase]*feedback)+(input*feedback)*chandiv; + phase+=1; + return(output); + +} + +//I particularly like these. cutoff between 0 and 1 +double maxiFilter::lopass(double input, double cutoff) { + output=outputs[0] + cutoff*(input-outputs[0]); + outputs[0]=output; + return(output); +} +//as above +double maxiFilter::hipass(double input, double cutoff) { + output=input-(outputs[0] + cutoff*(input-outputs[0])); + outputs[0]=output; + return(output); +} +//awesome. cuttof is freq in hz. res is between 1 and whatever. Watch out! +double maxiFilter::lores(double input,double cutoff1, double resonance) { + cutoff=cutoff1*0.5; + if (cutoff<10) cutoff=10; + if (cutoff>(maxiSettings::sampleRate*0.5)) cutoff=(maxiSettings::sampleRate*0.5); + if (resonance<1.) resonance = 1.; + z=cos(TWOPI*cutoff/maxiSettings::sampleRate); + c=2-2*z; + double r=(sqrt(2.0)*sqrt(-pow((z-1.0),3.0))+resonance*(z-1))/(resonance*(z-1)); + x=x+(input-y)*c; + y=y+x; + x=x*r; + output=y; + return(output); +} + +//working hires filter +double maxiFilter::hires(double input,double cutoff1, double resonance) { + cutoff=cutoff1*0.5; + if (cutoff<10) cutoff=10; + if (cutoff>(maxiSettings::sampleRate*0.5)) cutoff=(maxiSettings::sampleRate*0.5); + if (resonance<1.) resonance = 1.; + z=cos(TWOPI*cutoff/maxiSettings::sampleRate); + c=2-2*z; + double r=(sqrt(2.0)*sqrt(-pow((z-1.0),3.0))+resonance*(z-1))/(resonance*(z-1)); + x=x+(input-y)*c; + y=y+x; + x=x*r; + output=input-y; + return(output); +} + +//This works a bit. Needs attention. +double maxiFilter::bandpass(double input,double cutoff1, double resonance) { + cutoff=cutoff1; + if (cutoff>(maxiSettings::sampleRate*0.5)) cutoff=(maxiSettings::sampleRate*0.5); + if (resonance>=1.) resonance=0.999999; + z=cos(TWOPI*cutoff/maxiSettings::sampleRate); + inputs[0] = (1-resonance)*(sqrt(resonance*(resonance-4.0*pow(z,2.0)+2.0)+1)); + inputs[1] = 2*z*resonance; + inputs[2] = pow((resonance*-1),2); + + output=inputs[0]*input+inputs[1]*outputs[1]+inputs[2]*outputs[2]; + outputs[2]=outputs[1]; + outputs[1]=output; + return(output); +} + +//stereo bus +double *maxiMix::stereo(double input,double two[2],double x) { + if (x>1) x=1; + if (x<0) x=0; + two[0]=input*sqrt(1.0-x); + two[1]=input*sqrt(x); + return(two); +} + +//quad bus +double *maxiMix::quad(double input,double four[4],double x,double y) { + if (x>1) x=1; + if (x<0) x=0; + if (y>1) y=1; + if (y<0) y=0; + four[0]=input*sqrt((1.0-x)*y); + four[1]=input*sqrt((1.0-x)*(1.0-y)); + four[2]=input*sqrt(x*y); + four[3]=input*sqrt(x*(1.0-y)); + return(four); +} + +//ambisonic bus +double *maxiMix::ambisonic(double input,double eight[8],double x,double y,double z) { + if (x>1) x=1; + if (x<0) x=0; + if (y>1) y=1; + if (y<0) y=0; + if (z>1) y=1; + if (z<0) y=0; + eight[0]=input*(sqrt((1.0-x)*y)*1.0-z); + eight[1]=input*(sqrt((1.0-x)*(1.0-y))*1.0-z); + eight[2]=input*(sqrt(x*y)*1.0-z); + eight[3]=input*(sqrt(x*(1.0-y))*1.0-z); + eight[4]=input*(sqrt((1.0-x)*y)*z); + eight[5]=input*(sqrt((1.0-x)*(1.0-y))*z); + eight[6]=input*sqrt((x*y)*z); + eight[7]=input*sqrt((x*(1.0-y))*z); + return(eight); +} + + +bool maxiSample::load(string fileName, int channel) { + myPath = fileName; + readChannel=channel; + return read(); +} + +void maxiSample::trigger() { + position = 0; +} + +bool maxiSample::read() +{ + bool result; + ifstream inFile( myPath.c_str(), ios::in | ios::binary); + result = inFile; + if (inFile) { + bool datafound = false; + inFile.seekg(4, ios::beg); + inFile.read( (char*) &myChunkSize, 4 ); // read the ChunkSize + + inFile.seekg(16, ios::beg); + inFile.read( (char*) &mySubChunk1Size, 4 ); // read the SubChunk1Size + + //inFile.seekg(20, ios::beg); + inFile.read( (char*) &myFormat, sizeof(short) ); // read the file format. This should be 1 for PCM + + //inFile.seekg(22, ios::beg); + inFile.read( (char*) &myChannels, sizeof(short) ); // read the # of channels (1 or 2) + + //inFile.seekg(24, ios::beg); + inFile.read( (char*) &mySampleRate, sizeof(int) ); // read the samplerate + + //inFile.seekg(28, ios::beg); + inFile.read( (char*) &myByteRate, sizeof(int) ); // read the byterate + + //inFile.seekg(32, ios::beg); + inFile.read( (char*) &myBlockAlign, sizeof(short) ); // read the blockalign + + //inFile.seekg(34, ios::beg); + inFile.read( (char*) &myBitsPerSample, sizeof(short) ); // read the bitspersample + + //ignore any extra chunks + char chunkID[5]=""; + chunkID[4] = 0; + int filePos = 36; + while(!datafound && !inFile.eof()) { + inFile.seekg(filePos, ios::beg); + inFile.read((char*) &chunkID, sizeof(char) * 4); + inFile.seekg(filePos + 4, ios::beg); + inFile.read( (char*) &myDataSize, sizeof(int) ); // read the size of the data + filePos += 8; + if (strcmp(chunkID,"data") == 0) { + datafound = true; + }else{ + filePos += myDataSize; + } + } + + // read the data chunk + myData = (char*) malloc(myDataSize * sizeof(char)); + inFile.seekg(filePos, ios::beg); + inFile.read(myData, myDataSize); + length=myDataSize*(0.5/myChannels); + inFile.close(); // close the input file + + if (myChannels>1) { + int position=0; + int channel=readChannel*2; + for (int i=channel;i<myDataSize+6;i+=(myChannels*2)) { + myData[position]=myData[i]; + myData[position+1]=myData[i+1]; + position+=2; + } + } + + }else { + cout << "ERROR: Could not load sample: "; //<< myPath << endl; + } + + + return result; // this should probably be something more descriptive +} + + +double maxiSample::play() { +// long length=myDataSize*(1./myChannels); + double remainder; + short* buffer = (short *)myData; + position=(position+1); + remainder = position - (long) position; + if ((long) position>length) position=0; + output = + (double) ((1-remainder) * buffer[1+ (long) position] + remainder * buffer[2+(long) position])/32767;//linear interpolation + return(output); +} + +double maxiSample::playOnce() { +// long length=myDataSize*(0.5/myChannels); + short* buffer = (short *)myData; + position=(position+1); + double remainder = position - (long) position; + if ((long) position<length) + output = (double) ((1-remainder) * buffer[1+ (long) position] + remainder * buffer[2+(long) position])/32767;//linear interpolation + else + output=0; + + return(output); +} + +double maxiSample::playOnce(double speed) { + //long a,b; + // long length=myDataSize*0.5; + short* buffer = (short *)myData; + position=position+((speed*chandiv*myChannels)/(maxiSettings::sampleRate/mySampleRate)); + double remainder = position - (long) position; + if ((long) position<length) + output = (double) ((1-remainder) * buffer[1+ (long) position] + remainder * buffer[2+(long) position])/32767;//linear interpolation + else + output=0; + return(output); +} + +double maxiSample::play(double speed) { + double remainder; + long a,b; +// long length=myDataSize*0.5; + short* buffer = (short *)myData; + position=position+((speed*chandiv*myChannels)/(maxiSettings::sampleRate/mySampleRate)); + if (speed >=0) { + + if ((long) position>=length-1) position=1; + remainder = position - floor(position); + if (position+1<length) { + a=position+1; + + } + else { + a=length-1; + } + if (position+2<length) + { + b=position+2; + } + else { + b=length-1; + } + + output = (double) ((1-remainder) * buffer[a] + remainder * buffer[b])/32767;//linear interpolation +} else { + if ((long) position<0) position=length; + remainder = position - floor(position); + if (position-1>=0) { + a=position-1; + + } + else { + a=0; + } + if (position-2>=0) { + b=position-2; + } + else { + b=0; + } + output = (double) ((-1-remainder) * buffer[a] + remainder * buffer[b])/32767;//linear interpolation + } + return(output); +} + +double maxiSample::play(double frequency, double start, double end) { + return play(frequency, start, end, position); +} + +double maxiSample::play(double frequency, double start, double end, double &pos) { + double remainder; + // long length=myDataSize; + + if (end>=length) end=length-1; + long a,b; + short* buffer = (short *)myData; + if (frequency >0.) { + if (pos<start) { + pos=start; + } + + if ( pos >= end ) pos = start; + pos += ((end-start)/(maxiSettings::sampleRate/(frequency*chandiv))); + remainder = pos - floor(pos); + long posl = floor(pos); + if (posl+1<length) { + a=posl+1; + + } + else { + a=posl-1; + } + if (posl+2<length) { + b=posl+2; + } + else { + b=length-1; + } + + output = (double) ((1-remainder) * buffer[a] + + remainder * buffer[b])/32767;//linear interpolation + } else { + frequency=frequency-(frequency+frequency); + if ( pos <= start ) pos = end; + pos -= ((end-start)/(maxiSettings::sampleRate/(frequency*chandiv))); + remainder = pos - floor(pos); + long posl = floor(pos); + if (posl-1>=0) { + a=posl-1; + } + else { + a=0; + } + if (posl-2>=0) { + b=posl-2; + } + else { + b=0; + } + output = (double) ((-1-remainder) * buffer[a] + + remainder * buffer[b])/32767;//linear interpolation + + } + + return(output); +} + + +//better cubic inerpolation. Cobbled together from various (pd externals, yehar, other places). +double maxiSample::play4(double frequency, double start, double end) { + double remainder; + double a,b,c,d,a1,a2,a3; + short* buffer = (short*)myData; + if (frequency >0.) { + if (position<start) { + position=start; + } + if ( position >= end ) position = start; + position += ((end-start)/(maxiSettings::sampleRate/(frequency*chandiv))); + remainder = position - floor(position); + if (position>0) { + a=buffer[(int)(floor(position))-1]; + + } else { + a=buffer[0]; + + } + + b=buffer[(long) position]; + if (position<end-2) { + c=buffer[(long) position+1]; + + } else { + c=buffer[0]; + + } + if (position<end-3) { + d=buffer[(long) position+2]; + + } else { + d=buffer[0]; + } + a1 = 0.5f * (c - a); + a2 = a - 2.5 * b + 2.f * c - 0.5f * d; + a3 = 0.5f * (d - a) + 1.5f * (b - c); + output = (double) (((a3 * remainder + a2) * remainder + a1) * remainder + b) / 32767; + + } else { + frequency=frequency-(frequency+frequency); + if ( position <= start ) position = end; + position -= ((end-start)/(maxiSettings::sampleRate/(frequency*chandiv))); + remainder = position - floor(position); + if (position>start && position < end-1) { + a=buffer[(long) position+1]; + + } else { + a=buffer[0]; + + } + + b=buffer[(long) position]; + if (position>start) { + c=buffer[(long) position-1]; + + } else { + c=buffer[0]; + + } + if (position>start+1) { + d=buffer[(long) position-2]; + + } else { + d=buffer[0]; + } + a1 = 0.5f * (c - a); + a2 = a - 2.5 * b + 2.f * c - 0.5f * d; + a3 = 0.5f * (d - a) + 1.5f * (b - c); + output = (double) (((a3 * remainder + a2) * -remainder + a1) * -remainder + b) / 32767; + + } + + return(output); +} + +double maxiSample::bufferPlay(unsigned char &bufferin,long length) { + double remainder; + short* buffer = (short *)&bufferin; + position=(position+1); + remainder = position - (long) position; + if ((long) position>length) position=0; + output = (double) ((1-remainder) * buffer[1+ (long) position] + remainder * buffer[2+(long) position])/32767;//linear interpolation + return(output); +} + +double maxiSample::bufferPlay(unsigned char &bufferin,double speed,long length) { + double remainder; + long a,b; + short* buffer = (short *)&bufferin; + position=position+((speed*chandiv*myChannels)/(maxiSettings::sampleRate/mySampleRate)); + if (speed >=0) { + + if ((long) position>=length-1) position=1; + remainder = position - floor(position); + if (position+1<length) { + a=position+1; + + } + else { + a=length-1; + } + if (position+2<length) + { + b=position+2; + } + else { + b=length-1; + } + + output = (double) ((1-remainder) * buffer[a] + remainder * buffer[b])/32767;//linear interpolation + } else { + if ((long) position<0) position=length; + remainder = position - floor(position); + if (position-1>=0) { + a=position-1; + + } + else { + a=0; + } + if (position-2>=0) { + b=position-2; + } + else { + b=0; + } + output = (double) ((-1-remainder) * buffer[a] + remainder * buffer[b])/32767;//linear interpolation + } + return(output); +} + +double maxiSample::bufferPlay(unsigned char &bufferin,double frequency, double start, double end) { + double remainder; + length=end; + long a,b; + short* buffer = (short *)&bufferin; + if (frequency >0.) { + if (position<start) { + position=start; + } + + if ( position >= end ) position = start; + position += ((end-start)/(maxiSettings::sampleRate/(frequency*chandiv))); + remainder = position - floor(position); + long pos = floor(position); + if (pos+1<length) { + a=pos+1; + + } + else { + a=pos-1; + } + if (pos+2<length) { + b=pos+2; + } + else { + b=length-1; + } + + output = (double) ((1-remainder) * buffer[a] + + remainder * buffer[b])/32767;//linear interpolation + } else { + frequency=frequency-(frequency+frequency); + if ( position <= start ) position = end; + position -= ((end-start)/(maxiSettings::sampleRate/(frequency*chandiv))); + remainder = position - floor(position); + long pos = floor(position); + if (pos-1>=0) { + a=pos-1; + } + else { + a=0; + } + if (pos-2>=0) { + b=pos-2; + } + else { + b=0; + } + output = (double) ((-1-remainder) * buffer[a] + + remainder * buffer[b])/32767;//linear interpolation + + } + + return(output); +} + +//better cubic inerpolation. Cobbled together from various (pd externals, yehar, other places). +double maxiSample::bufferPlay4(unsigned char &bufferin,double frequency, double start, double end) { + double remainder; + double a,b,c,d,a1,a2,a3; + short* buffer = (short*)&bufferin; + if (frequency >0.) { + if (position<start) { + position=start; + } + if ( position >= end ) position = start; + position += ((end-start)/(maxiSettings::sampleRate/(frequency*chandiv))); + remainder = position - floor(position); + if (position>0) { + a=buffer[(int)(floor(position))-1]; + + } else { + a=buffer[0]; + + } + + b=buffer[(long) position]; + if (position<end-2) { + c=buffer[(long) position+1]; + + } else { + c=buffer[0]; + + } + if (position<end-3) { + d=buffer[(long) position+2]; + + } else { + d=buffer[0]; + } + a1 = 0.5f * (c - a); + a2 = a - 2.5 * b + 2.f * c - 0.5f * d; + a3 = 0.5f * (d - a) + 1.5f * (b - c); + output = (double) (((a3 * remainder + a2) * remainder + a1) * remainder + b) / 32767; + + } else { + frequency=frequency-(frequency+frequency); + if ( position <= start ) position = end; + position -= ((end-start)/(maxiSettings::sampleRate/(frequency*chandiv))); + remainder = position - floor(position); + if (position>start && position < end-1) { + a=buffer[(long) position+1]; + + } else { + a=buffer[0]; + + } + + b=buffer[(long) position]; + if (position>start) { + c=buffer[(long) position-1]; + + } else { + c=buffer[0]; + + } + if (position>start+1) { + d=buffer[(long) position-2]; + + } else { + d=buffer[0]; + } + a1 = 0.5f * (c - a); + a2 = a - 2.5 * b + 2.f * c - 0.5f * d; + a3 = 0.5f * (d - a) + 1.5f * (b - c); + output = (double) (((a3 * remainder + a2) * -remainder + a1) * -remainder + b) / 32767; + + } + + return(output); +} + + +void maxiSample::getLength() { + length=myDataSize*0.5; +} + + +/* OK this compressor and gate are now ready to use. The envelopes, like all the envelopes in this recent update, use stupid algorithms for + incrementing - consequently a long attack is something like 0.0001 and a long release is like 0.9999. + Annoyingly, a short attack is 0.1, and a short release is 0.99. I'll sort this out laters */ + +double maxiDyn::gate(double input, double threshold, long holdtime, double attack, double release) { + + if (fabs(input)>threshold && attackphase!=1){ + holdcount=0; + releasephase=0; + attackphase=1; + if(amplitude==0) amplitude=0.01; + } + + if (attackphase==1 && amplitude<1) { + amplitude*=(1+attack); + output=input*amplitude; + } + + if (amplitude>=1) { + attackphase=0; + holdphase=1; + } + + if (holdcount<holdtime && holdphase==1) { + output=input; + holdcount++; + } + + if (holdcount==holdtime) { + holdphase=0; + releasephase=1; + } + + if (releasephase==1 && amplitude>0.) { + output=input*(amplitude*=release); + + } + + return output; +} + + +double maxiDyn::compressor(double input, double ratio, double threshold, double attack, double release) { + + if (fabs(input)>threshold && attackphase!=1){ + holdcount=0; + releasephase=0; + attackphase=1; + if(currentRatio==0) currentRatio=ratio; + } + + if (attackphase==1 && currentRatio<ratio-1) { + currentRatio*=(1+attack); + } + + if (currentRatio>=ratio-1) { + attackphase=0; + releasephase=1; + } + + if (releasephase==1 && currentRatio>0.) { + currentRatio*=release; + } + + if (input>0.) { + output = input/(1.+currentRatio); + } else { + output = input/(1.+currentRatio); + } + + return output*(1+log(ratio)); +} + + +/* Lots of people struggle with the envelope generators so here's a new easy one. + It takes mental numbers for attack and release tho. Basically, they're exponentials. + I'll map them out later so that it's a bit more intuitive */ +double maxiEnv::ar(double input, double attack, double release, long holdtime, int trigger) { + + if (trigger==1 && attackphase!=1 && holdphase!=1){ + holdcount=0; + releasephase=0; + attackphase=1; + } + + if (attackphase==1) { + amplitude+=(1*attack); + output=input*amplitude; + } + + if (amplitude>=1) { + amplitude=1; + attackphase=0; + holdphase=1; + } + + if (holdcount<holdtime && holdphase==1) { + output=input; + holdcount++; + } + + if (holdcount==holdtime && trigger==1) { + output=input; + } + + if (holdcount==holdtime && trigger!=1) { + holdphase=0; + releasephase=1; + } + + if (releasephase==1 && amplitude>0.) { + output=input*(amplitude*=release); + + } + + return output; +} + +/* and here's a new adsr. It's not bad, very simple to use*/ + +double maxiEnv::adsr(double input, double attack, double decay, double sustain, double release, long holdtime, int trigger) { + + if (trigger==1 && attackphase!=1 && holdphase!=1 && decayphase!=1){ + holdcount=0; + decayphase=0; + sustainphase=0; + releasephase=0; + attackphase=1; + } + + if (attackphase==1) { + amplitude+=(1*attack); + output=input*amplitude; + } + + if (amplitude>=1) { + amplitude=1; + attackphase=0; + decayphase=1; + } + + if (decayphase==1) { + output=input*(amplitude*=decay); + if (amplitude<=sustain) { + decayphase=0; + holdphase=1; + } + } + + if (holdcount<holdtime && holdphase==1) { + output=input*amplitude; + holdcount++; + } + + if (holdcount==holdtime && trigger==1) { + output=input*amplitude; + } + + if (holdcount==holdtime && trigger!=1) { + holdphase=0; + releasephase=1; + } + + if (releasephase==1 && amplitude>0.) { + output=input*(amplitude*=release); + + } + + return output; +} + +double convert::mtof(int midinote) { + + return mtofarray[midinote]; +} |