interpretor/preprocessor/faust-0.9.47mr3/architecture/csound.cpp

   1 /************************************************************************
   2
   3         IMPORTANT NOTE : this file contains two clearly delimited sections :
   4         the ARCHITECTURE section (in two parts) and the USER section. Each section
   5         is governed by its own copyright and license. Please check individually
   6         each section for license and copyright information.
   7 *************************************************************************/
   8
   9 /*******************BEGIN ARCHITECTURE SECTION (part 1/2)****************/
  10
  11 /************************************************************************
  12     FAUST Architecture File
  13         Copyright (C) 2010-2011 V. Lazzarini and GRAME
  14     ---------------------------------------------------------------------
  15     This Architecture section is free software; you can redistribute it
  16     and/or modify it under the terms of the GNU General Public License
  17         as published by the Free Software Foundation; either version 3 of
  18         the License, or (at your option) any later version.
  19
  20     This program is distributed in the hope that it will be useful,
  21     but WITHOUT ANY WARRANTY; without even the implied warranty of
  22     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23     GNU General Public License for more details.
  24
  25     You should have received a copy of the GNU General Public License
  26         along with this program; If not, see <http://www.gnu.org/licenses/>.
  27
  28         EXCEPTION : As a special exception, you may create a larger work
  29         that contains this FAUST architecture section and distribute
  30         that work under terms of your choice, so long as this FAUST
  31         architecture section is not modified.
  32
  33
  34  ************************************************************************
  35  ************************************************************************/
  36
  37 //==============================================================================
  38 //
  39 //          CSOUND architecture file for FAUST
  40 //          Y. Orlarey & V. Lazzarini
  41 //
  42 //          Usage : faust -uim -a csound.cpp <myfx>.dsp -o <myfx>.cpp
  43 //                  g++ -O3 -DOPCODE_NAME=<myfx> -c <myfx>.cpp -o <myfx>.o
  44 //                  ld -E --shared <myfx>.o -o <myfx>.so
  45 //
  46 //          History :
  47 //          - 28/04/09 : first version
  48 //          - 29/04/09 : dynamic allocation
  49 //
  50 //==============================================================================
  51
  52 #include <new>
  53 #include <vector>
  54 #include "csdl.h"                       /* CSOUND plugin API header */
  55
  56 // used to transform a symbol in a string
  57 #define sym(name) xsym(name)
  58 #define xsym(name) #name
  59
  60 // make sure we use csound floats
  61 #define FAUSTFLOAT MYFLT
  62
  63 // we require macro declarations
  64 #define FAUST_UIMACROS
  65
  66 // but we will ignore most of them
  67 #define FAUST_ADDBUTTON(l,f)
  68 #define FAUST_ADDCHECKBOX(l,f)
  69 #define FAUST_ADDVERTICALSLIDER(l,f,i,a,b,s)
  70 #define FAUST_ADDHORIZONTALSLIDER(l,f,i,a,b,s)
  71 #define FAUST_ADDNUMENTRY(l,f,i,a,b,s)
  72 #define FAUST_ADDVERTICALBARGRAPH(l,f,a,b)
  73 #define FAUST_ADDHORIZONTALBARGRAPH(l,f,a,b)
  74
  75 #define max(x,y) (((x)>(y)) ? (x) : (y))
  76 #define min(x,y) (((x)<(y)) ? (x) : (y))
  77
  78 using namespace std;
  79
  80 // On Intel set FZ (Flush to Zero) and DAZ (Denormals Are Zero)
  81 // flags to avoid costly denormals
  82 #ifdef __SSE__
  83     #include <xmmintrin.h>
  84     #ifdef __SSE2__
  85         #define AVOIDDENORMALS _mm_setcsr(_mm_getcsr() | 0x8040)
  86     #else
  87         #define AVOIDDENORMALS _mm_setcsr(_mm_getcsr() | 0x8000)
  88     #endif
  89 #else
  90     #define AVOIDDENORMALS
  91 #endif
  92
  93
  94
  95
  96 /******************************************************************************
  97 *******************************************************************************
  98
  99                                    VECTOR INTRINSICS
 100
 101 *******************************************************************************
 102 *******************************************************************************/
 103
 104
 105 <<includeIntrinsic>>
 106
 107
 108
 109 /**
 110  * We will ignore metadata declarations
 111  */
 112 struct Meta
 113 {
 114     void declare (const char* key, const char* value) { }
 115 };
 116
 117 /**
 118  * Abstract Definition of a user interface
 119  */
 120 class UI
 121 {
 122  public:
 123
 124     virtual ~UI() {}
 125
 126     // -- active widgets
 127
 128     virtual void addButton(const char* label, FAUSTFLOAT* zone) = 0;
 129     virtual void addToggleButton(const char* label, FAUSTFLOAT* zone) = 0;
 130     virtual void addCheckButton(const char* label, FAUSTFLOAT* zone) = 0;
 131     virtual void addVerticalSlider(const char* label, FAUSTFLOAT* zone, FAUSTFLOAT init, FAUSTFLOAT min, FAUSTFLOAT max, FAUSTFLOAT step) = 0;
 132     virtual void addHorizontalSlider(const char* label, FAUSTFLOAT* zone, FAUSTFLOAT init, FAUSTFLOAT min, FAUSTFLOAT max, FAUSTFLOAT step) = 0;
 133     virtual void addNumEntry(const char* label, FAUSTFLOAT* zone, FAUSTFLOAT init, FAUSTFLOAT min, FAUSTFLOAT max, FAUSTFLOAT step) = 0;
 134
 135     // -- passive widgets
 136
 137     virtual void addNumDisplay(const char* label, FAUSTFLOAT* zone, int precision)                           {}
 138     virtual void addTextDisplay(const char* label, FAUSTFLOAT* zone, char* names[], FAUSTFLOAT min, FAUSTFLOAT max)    {}
 139     virtual void addHorizontalBargraph(const char* label, FAUSTFLOAT* zone, FAUSTFLOAT min, FAUSTFLOAT max)            {}
 140     virtual void addVerticalBargraph(const char* label, FAUSTFLOAT* zone, FAUSTFLOAT min, FAUSTFLOAT max)              {}
 141
 142     // -- widget's layouts
 143
 144     virtual void openFrameBox(const char* label)                                                        {}
 145     virtual void openTabBox(const char* label)                                                          {}
 146     virtual void openHorizontalBox(const char* label)                                                   {}
 147     virtual void openVerticalBox(const char* label)                                                     {}
 148     virtual void closeBox()                                                                             {}
 149
 150     virtual void declare(FAUSTFLOAT* zone, const char* key, const char* value) {}
 151 };
 152
 153 /**
 154  * A UI that simply collects the active zones in a vector
 155  * and provides a method to copy the csound controls
 156  */
 157 class CSUI : public UI
 158 {
 159     vector<FAUSTFLOAT*>  vZone;
 160
 161  public:
 162     // -- active widgets
 163
 164     virtual void addButton(const char* label, FAUSTFLOAT* zone)                                                          { vZone.push_back(zone); }
 165     virtual void addToggleButton(const char* label, FAUSTFLOAT* zone)                                                    { vZone.push_back(zone); }
 166     virtual void addCheckButton(const char* label, FAUSTFLOAT* zone)                                                     { vZone.push_back(zone); }
 167     virtual void addVerticalSlider(const char* label, FAUSTFLOAT* zone, FAUSTFLOAT init, FAUSTFLOAT min, FAUSTFLOAT max, FAUSTFLOAT step)    { vZone.push_back(zone); }
 168     virtual void addHorizontalSlider(const char* label, FAUSTFLOAT* zone, FAUSTFLOAT init, FAUSTFLOAT min, FAUSTFLOAT max, FAUSTFLOAT step)  { vZone.push_back(zone); }
 169     virtual void addNumEntry(const char* label, FAUSTFLOAT* zone, FAUSTFLOAT init, FAUSTFLOAT min, FAUSTFLOAT max, FAUSTFLOAT step)          { vZone.push_back(zone); }
 170
 171     void copyfrom(MYFLT* mem[]) {
 172         for (unsigned int i=0; i<vZone.size(); i++) { *vZone[i] = *(mem[i]); }
 173     }
 174
 175     int size()                  { return vZone.size(); }
 176 };
 177
 178
 179
 180 /**
 181  * Abstract Definition of a DSP
 182  */
 183
 184 class dsp {
 185  protected:
 186     int fSamplingFreq;
 187   public:
 188     virtual int getNumInputs() = 0;
 189     virtual int getNumOutputs() = 0;
 190     virtual void instanceInit(int samplingFreq) = 0;
 191     virtual void init(int samplingFreq)= 0;
 192     virtual void buildUserInterface(UI* interface) = 0;
 193     virtual void compute (int count, FAUSTFLOAT** input, FAUSTFLOAT** output) = 0;
 194 };
 195
 196
 197 /********************END ARCHITECTURE SECTION (part 1/2)****************/
 198
 199 /**************************BEGIN USER SECTION **************************/
 200
 201 <<includeclass>>
 202
 203 /***************************END USER SECTION ***************************/
 204
 205 /*******************BEGIN ARCHITECTURE SECTION (part 2/2)***************/
 206
 207
 208
 209 struct dataspace {
 210     OPDS      h;                          /* basic attributes */
 211     MYFLT*    aout[FAUST_OUTPUTS];        /* output buffers   */
 212     MYFLT*    ain[FAUST_INPUTS];          /* input buffers    */
 213     MYFLT*    ktl[FAUST_ACTIVES];         /* controls         */
 214     dsp*      DSP;                        /* the Faust generated object */
 215     CSUI*     interface;                  /* do the mapping between CSound controls and DSP fields */
 216     AUXCH     dspmem;                     /* aux memory allocated once to store the DSP object */
 217     AUXCH     intmem;                     /* aux memory allocated once to store the interface object */
 218 };
 219
 220
 221 /**
 222  * Creates a "aaakkkk" CSound description string. Note that
 223  * these string will never be released. Potential memory leak
 224  */
 225 static char* makeDescription(int numa, int numk=0)
 226 {
 227     char* str = (char*)malloc(numa+numk+1); // NEED TO BE CHANGED ?
 228     if (str) {
 229         for (int i=0; i<numa; i++) str[i] = 'a';
 230         for (int i=0; i<numk; i++) str[numa+i] = 'k';
 231         str[numa+numk] = 0;
 232     }
 233     return str;
 234 }
 235
 236
 237 /**
 238  * CSOUND callback that allocates and initializes
 239  * the FAUST generated DSP object and it's CSound interface
 240  */
 241 static int init(CSOUND *csound, dataspace *p)
 242 {
 243     if (p->dspmem.auxp == NULL)
 244         csound->AuxAlloc(csound, sizeof(mydsp), &p->dspmem);
 245
 246     if(p->intmem.auxp == NULL)
 247         csound->AuxAlloc(csound, sizeof(CSUI), &p->intmem);
 248
 249
 250     p->DSP = new (p->dspmem.auxp) mydsp;
 251     p->interface = new (p->intmem.auxp) CSUI;
 252
 253     if ((p->DSP == 0) | (p->interface == 0)) return NOTOK;
 254
 255     p->DSP->init((int)csound->GetSr(csound));
 256     p->DSP->buildUserInterface(p->interface);
 257
 258     return OK;
 259 }
 260
 261
 262 /**
 263  * CSound callback that process the samples by updating
 264  * the controls values and calling the compute() method
 265  * of the DSP object. (Assume MYFLT = FAUSTFLOAT)
 266  */
 267 static int process32bits(CSOUND *csound, dataspace *p)
 268 {
 269   AVOIDDENORMALS;
 270
 271   // update all the control values
 272   p->interface->copyfrom(p->ktl);
 273
 274   p->DSP->compute(csound->GetKsmps(csound), p->ain, p->aout);
 275   return OK;
 276 }
 277
 278 extern "C" {
 279
 280 static OENTRY localops[] = {
 281     {(char*)sym(OPCODE_NAME), sizeof(dataspace),5,makeDescription(FAUST_OUTPUTS), makeDescription(FAUST_INPUTS,FAUST_ACTIVES),
 282      (SUBR)init, NULL,(SUBR)process32bits }
 283 };
 284 LINKAGE
 285 }
 286
 287
 288 /********************END ARCHITECTURE SECTION (part 2/2)****************/
 289
 290
 291