foo

segment.c

@@ -0,0 +1,81 @@
+#include <aubio/aubio.h>
+
+int overlap_size = 256;
+aubio_pvoc_t * pv;
+fvec_t * ibuf;
+cvec_t * fftgrain;
+aubio_onsetdetection_t *o;
+aubio_onsetdetection_type type_onset  = aubio_onset_kl;
+fvec_t *onset;
+
+smpl_t threshold                      = 0.3;
+smpl_t silence                        = -90.;
+uint_t buffer_size                    = 512; /*1024;*/
+aubio_pickpeak_t * parms;
+unsigned int pos = 0; /*frames%dspblocksize*/
+int channels;
+
+#define MAXONSETS 128
+int onsets[MAXONSETS];
+int onset_n = 0;
+
+void aubio_init(int c) {
+  channels = c;
+  /* phase vocoder */
+  pv = new_aubio_pvoc(buffer_size, overlap_size, channels);  
+  ibuf = new_fvec(overlap_size, channels);
+  fftgrain  = new_cvec(buffer_size, channels);
+  o = new_aubio_onsetdetection(type_onset, buffer_size, channels);
+  parms = new_aubio_peakpicker(threshold);
+  onset = new_fvec(1, channels);
+  pos = 0;
+  onset_n = 0;
+}
+
+void aubio_destruct() {
+  del_aubio_pvoc(pv);
+  del_fvec(ibuf);
+  del_cvec(fftgrain);
+  del_aubio_onsetdetection(o);
+  del_aubio_peakpicker(parms);
+  del_fvec(onset);
+}
+
+int aubio_process(float *input, int nframes) {
+  unsigned int j, i;       /*frames*/
+
+  for (j=0;j<(unsigned)nframes;j++) {
+    for (i=0; i < channels; i++) {
+      /* write input to datanew */
+      fvec_write_sample(ibuf, input[channels*j+i], i, pos);
+    }
+  }
+
+  for (j=0;j<(unsigned)nframes;j++) {
+    /*time for fft*/
+    if ((pos % (overlap_size-1)) == 0) {
+      int isonset;
+      /* block loop */
+      aubio_pvoc_do(pv, ibuf, fftgrain);
+      aubio_onsetdetection(o, fftgrain, onset);
+      /*
+      if (usedoubled) {
+        aubio_onsetdetection(o2,fftgrain, onset2);
+        onset->data[0][0] *= onset2->data[0][0];
+      }
+      */
+      isonset = aubio_peakpick_pimrt(onset, parms);
+      if (isonset) {
+        /* test for silence */
+        if (aubio_silence_detection(ibuf, silence)==1)
+          isonset=0;
+        else {
+          printf("onset! %d\n", pos);
+          onsets[onset_n++] = pos;
+        }
+      }
+    }
+    pos++;
+  }
+  return 1;
+}

server.h

@@ -0,0 +1 @@
+extern int server_init(void);

test.c

@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <lo/lo.h>
+
+int main(int argc, char *argv[]) {
+    lo_address t = lo_address_new(NULL, "7771");
+
+    int result = lo_send(t, "/play", "s", "drum/0");
+    printf("result: %d\n", result);
+
+    return(0);
+}