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-rwxr-xr-xsignal/sfwrite~.c284
1 files changed, 284 insertions, 0 deletions
diff --git a/signal/sfwrite~.c b/signal/sfwrite~.c
new file mode 100755
index 0000000..9a999c9
--- /dev/null
+++ b/signal/sfwrite~.c
@@ -0,0 +1,284 @@
+/* (C) Guenter Geiger <geiger@epy.co.at> */
+
+
+#include <m_imp.h>
+/*#include <m_pd.h>*/
+#include "g_canvas.h"
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#ifndef NT
+#include <unistd.h>
+#include <sys/mman.h>
+#else
+#include <io.h>
+#endif
+#include <fcntl.h>
+#include <sys/stat.h>
+
+
+#ifdef NT
+#define BINREADMODE "rb"
+#define OPENPARAMS O_WRONLY | O_CREAT | O_TRUNC
+#else
+#define BINREADMODE "r"
+#define OPENPARAMS O_WRONLY | O_CREAT | O_NONBLOCK | O_TRUNC
+#endif
+#define MAX_CHANS 4
+
+
+/*
+ * ------------------------------------------- sfwrite~ -------------------------------
+ */
+
+#define BLOCKTIME 0.01
+#define uint32 unsigned int
+#define uint16 unsigned short
+
+static t_class *sfwrite_class;
+
+typedef struct _sfwrite
+{
+ t_object x_obj;
+ t_symbol* filename;
+ int x_file;
+
+ t_int rec;
+ t_int x_channels;
+ uint32 size;
+ t_glist * x_glist;
+ t_int x_blocked;
+ t_int x_blockwarn;
+} t_sfwrite;
+
+typedef struct _wave
+{
+ char w_fileid[4]; /* chunk id 'RIFF' */
+ uint32 w_chunksize; /* chunk size */
+ char w_waveid[4]; /* wave chunk id 'WAVE' */
+ char w_fmtid[4]; /* format chunk id 'fmt ' */
+ uint32 w_fmtchunksize; /* format chunk size */
+ uint16 w_fmttag; /* format tag, 1 for PCM */
+ uint16 w_nchannels; /* number of channels */
+ uint32 w_samplespersec; /* sample rate in hz */
+ uint32 w_navgbytespersec; /* average bytes per second */
+ uint16 w_nblockalign; /* number of bytes per sample */
+ uint16 w_nbitspersample; /* number of bits in a sample */
+ char w_datachunkid[4]; /* data chunk id 'data' */
+ uint32 w_datachunksize; /* length of data chunk */
+} t_wave;
+
+
+static void sfwrite_wave_setup(t_sfwrite* x,t_wave* w)
+{
+
+ strncpy(w->w_fileid,"RIFF",4); /* chunk id 'RIFF' */
+ w->w_chunksize = x->size + sizeof(t_wave) -8; /* chunk size */
+ strncpy(w->w_waveid,"WAVE",4); /* wave chunk id 'WAVE' */
+ strncpy(w->w_fmtid,"fmt ",4); /* format chunk id 'fmt '*/
+ w->w_fmtchunksize = 16; /* format chunk size */
+ w->w_fmttag = 1; /* format tag, 1 for PCM */
+ w->w_nchannels = x->x_channels; /* number of channels */
+ w->w_samplespersec = 44100; /* sample rate in hz */
+ w->w_navgbytespersec = 44100*x->x_channels*2; /* average bytes per second */
+ w->w_nblockalign = 4; /* number of bytes per sample */
+ w->w_nbitspersample = 16; /* number of bits in a sample */
+ strncpy(w->w_datachunkid,"data",4); /* data chunk id 'data'*/
+ w->w_datachunksize = x->size; /* length of data chunk */
+}
+
+
+
+static void sfwrite_close(t_sfwrite *x)
+{
+ if (x->x_file > 0) {
+ t_wave w;
+ sfwrite_wave_setup(x,&w);
+ lseek(x->x_file,0,SEEK_SET);
+ write(x->x_file,&w,sizeof(w));
+ close(x->x_file);
+ }
+ x->x_file = -1;
+}
+
+
+static void sfwrite_open(t_sfwrite *x,t_symbol *filename)
+{
+ char fname[MAXPDSTRING];
+
+ if (filename == &s_) {
+ post("sfwrite: open without filename");
+ return;
+ }
+
+ canvas_makefilename(glist_getcanvas(x->x_glist), filename->s_name,
+ fname, MAXPDSTRING);
+
+ x->x_blocked = 0;
+ x->filename = filename;
+ post("sfwrite: filename = %s",x->filename->s_name);
+
+ sfwrite_close(x);
+
+ if ((x->x_file = open(fname,OPENPARAMS,0664)) < 0)
+ {
+ error("can't create %s",fname);
+ return;
+ }
+
+ /* skip the header */
+
+ lseek(x->x_file,sizeof(t_wave),SEEK_SET);
+ x->size = 0;
+
+
+}
+
+static void sfwrite_block(t_sfwrite *x, t_floatarg f)
+{
+ x->x_blockwarn = f;
+}
+
+
+static void sfwrite_float(t_sfwrite *x, t_floatarg f)
+{
+ int t = f;
+ if (t) {
+ post("sfwrite: start", f);
+ x->rec=1;
+ }
+ else {
+ post("sfwrite: stop", f);
+ x->rec=0;
+ }
+
+}
+
+
+static short out[4*64];
+
+static t_int *sfwrite_perform(t_int *w)
+{
+ t_sfwrite* x = (t_sfwrite*)(w[1]);
+ t_float * in[4];
+ int c = x->x_channels;
+ int i,num,n;
+ short* tout = out;
+ int ret;
+ double timebefore,timeafter;
+ double late;
+
+ for (i=0;i < c;i++) {
+ in[i] = (t_float *)(w[2+i]);
+ }
+
+ n = num = (int)(w[2+c]);
+
+ /* loop */
+
+ if (x->rec && x->x_file) {
+
+ while (n--) {
+ for (i=0;i<c;i++) {
+ *tout++ = *(in[i])++ * 32768.;
+ }
+ }
+
+ timebefore = sys_getrealtime();
+ if ((ret =write(x->x_file,out,sizeof(short)*num*c)) < (signed int)sizeof(short)*num*c) {
+ post("sfwrite: short write %d",ret);
+
+ }
+ timeafter = sys_getrealtime();
+ late = timeafter - timebefore;
+
+ /* OK, we let only 10 ms block here */
+ if (late > BLOCKTIME && x->x_blockwarn) {
+ post("sfwrite blocked %f ms",late*1000);
+ x->x_blocked++;
+ if (x->x_blocked > x->x_blockwarn) {
+ x->rec = 0;
+ post("maximum blockcount %d reached, recording stopped (set blockcount with \"block <num>\"",x->x_blockwarn);
+ }
+ }
+ x->size +=64*x->x_channels*sizeof(short) ;
+ }
+
+ return (w+3+c);
+}
+
+
+
+static void sfwrite_dsp(t_sfwrite *x, t_signal **sp)
+{
+ switch (x->x_channels) {
+ case 1:
+ dsp_add(sfwrite_perform, 3, x, sp[0]->s_vec,
+ sp[0]->s_n);
+ break;
+ case 2:
+ dsp_add(sfwrite_perform, 4, x, sp[0]->s_vec,
+ sp[1]->s_vec, sp[0]->s_n);
+ break;
+ case 4:
+ dsp_add(sfwrite_perform, 6, x, sp[0]->s_vec,
+ sp[1]->s_vec,
+ sp[2]->s_vec,
+ sp[3]->s_vec,
+ sp[0]->s_n);
+ break;
+ }
+}
+
+static void sfwrite_free(t_sfwrite* x)
+{
+ sfwrite_close(x);
+}
+
+
+static void *sfwrite_new(t_floatarg chan)
+{
+ t_sfwrite *x = (t_sfwrite *)pd_new(sfwrite_class);
+ t_int c = chan;
+
+ if (c<1 || c > MAX_CHANS) c = 1;
+
+ x->x_glist = (t_glist*) canvas_getcurrent();
+ x->x_channels = c--;
+ x->x_file=0;
+ x->rec = 0;
+ x->size = 0;
+ x->x_blocked = 0;
+ x->x_blockwarn = 10;
+ while (c--) {
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal);
+ }
+
+
+ return (x);
+}
+
+void sfwrite_tilde_setup(void)
+{
+ sfwrite_class = class_new(gensym("sfwrite~"), (t_newmethod)sfwrite_new, (t_method)sfwrite_free,
+ sizeof(t_sfwrite), 0,A_DEFFLOAT,0);
+ class_addmethod(sfwrite_class,nullfn,gensym("signal"), 0);
+ class_addmethod(sfwrite_class, (t_method) sfwrite_dsp, gensym("dsp"), 0);
+ class_addmethod(sfwrite_class, (t_method) sfwrite_open, gensym("open"), A_SYMBOL,A_NULL);
+ class_addmethod(sfwrite_class, (t_method) sfwrite_close, gensym("close"), 0);
+ class_addmethod(sfwrite_class, (t_method)sfwrite_block,gensym("block"),A_DEFFLOAT,0);
+ class_addfloat(sfwrite_class, sfwrite_float);
+
+}
+
+
+
+
+
+
+
+