diff options
Diffstat (limited to 'pipewrite~.c')
| -rw-r--r-- | pipewrite~.c | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/pipewrite~.c b/pipewrite~.c new file mode 100644 index 0000000..b609c37 --- /dev/null +++ b/pipewrite~.c @@ -0,0 +1,286 @@ +#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> +#include <unistd.h> +#include <sys/mman.h> +#include <fcntl.h> +#include <sys/stat.h> + + +/* + * ------------------------------------------- pipewrite_tilde~ ------------------------------- + */ + +#define MAX_CHANS 4 +#define BLOCKTIME 0.001 +#define uint32 unsigned int +#define uint16 unsigned short +#define THERATE 22050 + +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 t_class *pipewrite_tilde_class; + +typedef struct _pipewrite_tilde +{ + t_object x_obj; + t_symbol* filename; + int x_file; + int finalize; + t_int rec; + t_int x_channels; + t_int size; + t_glist * x_glist; + t_int x_blocked; + t_int x_blockwarn; + short maxval; +} t_pipewrite_tilde; + +static void pipewrite_tilde_wave_setup(t_pipewrite_tilde* 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 = THERATE; /* sample rate in hz */ + w->w_navgbytespersec = THERATE * 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 = THERATE * 60 * 60 * 24 *365 /* x->size*/ ; /* length of data chunk */ + +} + + + +static void pipewrite_tilde_close(t_pipewrite_tilde *x) +{ + if (x->x_file > 0) { + t_wave w; + pipewrite_tilde_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; + x->size=0; +} + + +static void pipewrite_tilde_open(t_pipewrite_tilde *x,t_symbol *filename) +{ + char fname[MAXPDSTRING]; + t_wave w; + + if (filename == &s_) { + post("pipewrite_tilde: open without filename"); + return; + } + + canvas_makefilename(glist_getcanvas(x->x_glist), filename->s_name, + fname, MAXPDSTRING); + x->finalize = 0; + x->x_blocked = 0; + x->filename = filename; + x->maxval=0; + x->size=0; + post("pipewrite_tilde: filename = %s",x->filename->s_name); + +/* + pipewrite_tilde_close(x); +*/ +/* if ((x->x_file = open(fname,O_WRONLY | O_CREAT | O_NONBLOCK ,0664)) < 0)*/ + if ((x->x_file = open(fname,O_WRONLY | O_CREAT | O_NONBLOCK ,0664)) < 0) + + { + error("can't create %s",fname); + return; + } + + + pipewrite_tilde_wave_setup(x,&w); + write(x->x_file,&w,sizeof(w)); + + +} + +static void pipewrite_tilde_block(t_pipewrite_tilde *x, t_floatarg f) +{ + x->x_blockwarn = f; +} + + +static void pipewrite_tilde_float(t_pipewrite_tilde *x, t_floatarg f) +{ + int t = f; + if (t) { + if ( !(x->x_file > 0)){ + post ("pipewrite_tilde:dont have a file to record to"); + }else{ + post("pipewrite_tilde: start", f); + x->rec=1; + } + } + else { + post("pipewrite_tilde: stop", f); + x->rec=0; + x->finalize=1; + } + +} + + +static short out[4*64]; + +static t_int *pipewrite_tilde_perform(t_int *w) +{ + t_pipewrite_tilde* x = (t_pipewrite_tilde*)(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++) { + if (*(in[i]) > 1. ) { *(in[i]) = 1. ; } + if (*(in[i]) < -1. ) { *(in[i]) = -1. ; } + *tout++ = (*(in[i])++ * 32768.); +/* + if (abs(*tout)>abs(x->maxval)){ + x->maxval=*tout; + post("new maxval:%d, c:%d",x->maxval,c); + } +*/ + } + } + + timebefore = sys_getrealtime(); + if ((ret =write(x->x_file,out,sizeof(short)*num*c)) < sizeof(short)*num*c) { + post("pipewrite_tilde: short write %d",ret); + + } + timeafter = sys_getrealtime(); + late = timeafter - timebefore; + x->size +=ret; + /* OK, we let only 10 ms block here */ + if (late > BLOCKTIME && x->x_blockwarn) { + post("pipewrite_tilde blocked %f ms",late*1000); + x->x_blocked++; + if (x->x_blocked > x->x_blockwarn) { +/* x->rec = 0;*/ + post("maximum blockcount %d reached, recording normalerweise stopped (set blockcount with \"block <num>\"",x->x_blockwarn); + } + } + } + if (!x->rec && x->finalize){ + pipewrite_tilde_close(x); + x->finalize = 0; + } + + return (w+3+c); +} + + + +static void pipewrite_tilde_dsp(t_pipewrite_tilde *x, t_signal **sp) +{ + switch (x->x_channels) { + case 1: + dsp_add(pipewrite_tilde_perform, 3, x, sp[0]->s_vec, + sp[0]->s_n); + break; + case 2: + dsp_add(pipewrite_tilde_perform, 4, x, sp[0]->s_vec, + sp[1]->s_vec, sp[0]->s_n); + break; + case 4: + dsp_add(pipewrite_tilde_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 pipewrite_tilde_free(t_pipewrite_tilde* x) +{ + pipewrite_tilde_close(x); +} + + +static void *pipewrite_tilde_new(t_floatarg chan) +{ + t_pipewrite_tilde *x = (t_pipewrite_tilde *)pd_new(pipewrite_tilde_class); + t_int c = chan; + + if (c<1 || c > MAX_CHANS) c = 1; + + x->x_glist = (t_glist*) canvas_getcurrent(); + x->x_channels = c--; + post("channels:%d",x->x_channels); + x->x_file=0; + x->rec = 0; + x->finalize = 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 pipewrite_tilde_setup(void) +{ + pipewrite_tilde_class = class_new(gensym("pipewrite~"), (t_newmethod)pipewrite_tilde_new, (t_method)pipewrite_tilde_free, + sizeof(t_pipewrite_tilde), 0,A_DEFFLOAT,0); + class_addmethod(pipewrite_tilde_class,nullfn,gensym("signal"), 0); + class_sethelpsymbol(pipewrite_tilde_class, gensym("pipeio~")); + class_addmethod(pipewrite_tilde_class, (t_method) pipewrite_tilde_dsp, gensym("dsp"), 0); + class_addmethod(pipewrite_tilde_class, (t_method) pipewrite_tilde_open, gensym("open"), A_SYMBOL,A_NULL); + class_addmethod(pipewrite_tilde_class, (t_method) pipewrite_tilde_close, gensym("close"), 0); + class_addmethod(pipewrite_tilde_class, (t_method)pipewrite_tilde_block,gensym("block"),A_DEFFLOAT,0); + class_addfloat(pipewrite_tilde_class, pipewrite_tilde_float); + +} |