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/*
* sfrecord: multichannel soundfile recorder (try [writesf~] instead)
*
* (c) 1999-2011 IOhannes m zmölnig, forum::für::umläute, institute of electronic music and acoustics (iem)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
sfplay.c - Author: Winfried Ritsch - IEM Graz 10.Mai 99 -
Modified:
sfrecord.c - hacked from sfplay ::: 2308:forum::für::umläute:1999 @ iem
please mail problems and ideas for improvements to
ritsch@iem.kug.ac.at
zmoelnig@iem.kug.ac.at
*/
/* TODO: deprecate this in favour of [writesf~] */
/* #define DEBUG_ME for debugging messages */
#include "zexy.h"
/* #include "m_imp.h" */
#define DACBLKSIZE 64 /* in m_imp.h, but error if it is included it here*/
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
/* ------------------------ sfrecord ----------------------------- */
#define MAX_CHANS 8 /* channels for soundfiles 1,2,4,8 */
#ifdef __WIN32__
# define BINWRITEMODE "wb"
#else
# include <unistd.h>
# include <sys/mman.h>
# define BINWRITEMODE "w"
#endif
static t_class *sfrecord_class;
typedef struct _sfrecord
{
t_object x_obj;
void* filep; /* pointer to file data read in mem */
t_symbol* filename; /* filename */
/*
because there is no command queue,
flags are used instead
*/
t_int write; /* write: 1, stop: 0 */
t_int please_stop; /* can be reset only by stop-state itself */
t_int please_close; /* can be reset only by close-state */
t_int x_channels; /* channels to write */
t_float x_offset; /* offset to start writing */
t_float offset; /* inlet value offset in secs */
t_float x_skip; /* skip bytes because header */
t_int skip; /* pending skip if 1 */
t_float x_speed; /* write speed, not supported in this version */
t_int size; /* size of file (if memory mapped) */
t_int swap; /* swap bytes from l->b or b->m */
FILE *fp; /* file oper non-NULL of open */
t_int state; /* which state is writer in */
t_int count; /* count for ticks before next step */
} t_sfrecord;
/* states of statemachine */
#define SFRECORD_WAIT 0 /* wait for open */
#define SFRECORD_OPEN 1
#define SFRECORD_CLOSE 2
#define SFRECORD_SKIP 3
#define SFRECORD_WRITE 4
#define SFRECORD_STOP 5
#define SFRECORD_ERROR -1
#define SFRECORD_WAITTICKS 10 /* 1 tick of 64 Samples is ca.1.5ms on 441000 */
/* split the os-calls in as many steps as possible
to split them on different ticks in steps of SFRECORD_WAITTICKS
to avoid peak performance */
/* like the one from garray */
static int sfrecord_am_i_big_endian(void)
{
unsigned short s = 1;
unsigned char c = *(char *) (&s);
#ifdef DEBUG_ME
post("i am %s-endian", c?"little":"big");
#endif
return(c==0);
}
static void state_out(t_sfrecord *x, int state)
{ /* outlet the actual state */
outlet_float(x->x_obj.ob_outlet, state);
}
/* METHOD: "open" file */
/* this dont use memory map, because I dont know about this on NT ?
Use of the buffered functions fopen, fseek fread fclose instead the
non buffered ones open read close */
static void sfrecord_open(t_sfrecord *x,t_symbol *filename,t_symbol *endian)
{
if(x->state != SFRECORD_WAIT)
{
post("sfrecord: first close %s before open %s",x->filename->s_name,filename->s_name);
return;
}
/* test if big endian else asume little endian
* should be 'l' but could be anything
*/
if(sfrecord_am_i_big_endian())
x->swap = !(endian->s_name[0] == 'b');
else
x->swap = (endian->s_name[0] == 'b');
/*
* skip header after open;; sometimes weŽll have to write a header using the x->skip; so donŽt delete it completely
*/
/* x->skip = 1; */
x->filename = filename;
#ifdef DEBUG_ME
post("sfrecord: opening %s",x->filename->s_name);
#endif
if (x->fp != NULL)fclose(x->fp); /* should not happen */
if (!(x->fp = fopen(x->filename->s_name,BINWRITEMODE)))
{
error("sfrecord: can't open %s", x->filename->s_name);
}
}
/* METHOD: close */
static void sfrecord_close(t_sfrecord *x)
{
x->write = 0;
x->please_close = 1;
/* now in state machine
if(x->fp != NULL)
{
fclose(x->fp);
x->fp = NULL;
}
*/
#ifdef DEBUG_ME
post("sfrecord: closing ");
#endif
return;
}
/* for skipping header of soundfile DonŽt use this for memory map */
static int sfrecord_skip(t_sfrecord *x)
{
if(!x->skip) return 0;
#ifdef DEBUG_ME
post("sfrecord:skip to %f",x->x_skip);
#endif
x->skip = 0;
return 1;
}
/* Input, method for Start stop */
static void sfrecord_start(t_sfrecord *x)
{
#ifdef DEBUG_ME
post("sfrecord: start at %d", x->x_offset);
#endif
state_out(x, 1);
x->write=1;
}
static void sfrecord_stop(t_sfrecord *x)
{
#ifdef DEBUG_ME
post("sfrecord: stop");
#endif
state_out(x, 0);
x->write=0;
x->please_stop = 1;
}
static void sfrecord_float(t_sfrecord *x, t_floatarg f)
{
int t = f;
if (t) sfrecord_start(x);
else sfrecord_stop(x);
}
/* say what state weŽre in */
static void sfrecord_bang(t_sfrecord* x)
{
if (x->state == SFRECORD_WRITE) state_out(x, 1); else state_out(x, 0);
}
/* ******************************************************************************** */
/* the work krow eht */
/* ******************************************************************************** */
static t_int *sfrecord_perform(t_int *w)
{
t_sfrecord* x = (t_sfrecord*)(w[1]);
short* buf = x->filep;
short* bufstart = buf;
int c = x->x_channels;
int i,j,n, s_n;
t_float* in[MAX_CHANS];
short s;
int swap = x->swap;
for (i=0;i<c;i++)
in[i] = (t_float *)(w[2+i]);
n = s_n = (int)(w[2+c]);
/* loop */
switch(x->state){
/* just wait */
case SFRECORD_WAIT:
if(x->fp != NULL){
#ifdef DEBUG_ME
post("wait -> open");
#endif
x->state = SFRECORD_OPEN;
x->count = SFRECORD_WAITTICKS;
};
break;
/* if in open state, already opened but wait for skip */
case SFRECORD_OPEN: /* file has opened wait some time */
if(!(x->count--)){
#ifdef DEBUG_ME
post("open -> skip");
#endif
x->state = SFRECORD_SKIP;
x->count = SFRECORD_WAITTICKS;
};
break;
/* in skipmode wait until ready for stop */
case SFRECORD_SKIP:
if(x->count == SFRECORD_WAITTICKS)
{
if(!x->fp)
{
x->state = SFRECORD_CLOSE;
x->count=1;
#ifdef DEBUG_ME
post("skip -> close");
#endif
break;
}
sfrecord_skip(x);
}
if(!(x->count--))
{
#ifdef DEBUG_ME
post("skip -> stop");
#endif
x->state = SFRECORD_STOP;
x->count = SFRECORD_WAITTICKS;
};
break;
case SFRECORD_STOP: /* in stop state mainly waits for write */
x->please_stop = 0;
if(x->please_close)
{
x->state = SFRECORD_CLOSE;
x->count = SFRECORD_WAITTICKS;
#ifdef DEBUG_ME
post("stop -> close");
#endif
}
else if(x->skip)
{
x->state = SFRECORD_SKIP;
x->count = SFRECORD_WAITTICKS;
#ifdef DEBUG_ME
post("stop -> skip");
#endif
}
else if(x->write)
{
#ifdef DEBUG_ME
post("stop -> write");
#endif
x->state = SFRECORD_WRITE;
state_out(x, 1);
}
break;
case SFRECORD_WRITE: /* yes write now */
if(!x->write || x->please_stop)
{
/* if closing dont need to go to stop */
if(x->please_close) {
x->state = SFRECORD_CLOSE;
x->count = SFRECORD_WAITTICKS;
#ifdef DEBUG_ME
post("write -> close");
#endif
state_out(x, 0);
}
else {
x->state = SFRECORD_STOP;
#ifdef DEBUG_ME
post("write -> stop");
#endif
};
break;
}
/* should never happen */
if(!x->filep){
x->state = SFRECORD_ERROR;
error("sfrecord: writing but no buffer ???? write");
return (w+4+c);
}
/* copy float to 16 Bit and swap if neccesairy */ /* LATER treat overflows */
while (n--) {
for (i=0;i<c;i++) {
s = *in[i]++ * 32768.;
if (swap) s = ((s & 0xFF)<< 8) | ((s& 0xFF00) >> 8);
*buf++ = s;
}
}
/* then write soundfile 16 bit*/
if ( (j = fwrite(bufstart, sizeof(short), c*s_n, x->fp)) < 1) {
x->state = SFRECORD_ERROR;
x->count = SFRECORD_WAITTICKS;
#ifdef DEBUG_ME
post("write -> write error\t %xd\t%xd\t%d\t%d", x->filep, buf, c*s_n*sizeof(short), j);
#endif
break;
}
#if 0
if((j=fwrite(buf,sizeof(short),c*n,x->fp)) < (unsigned int) n)
{
if(feof(x->fp)){
while (n--) {
for (i=0;i<c;i++) {
if(--j > 0){
s = *buf++;
if(swap) s = ((s & 0xFF)<< 8) | ((s& 0xFF00) >> 8);
*out[i]++ = s*(1./32768.);
}
else
*out[i]++ = 0;
}
}
}
x->state = SFRECORD_STOP;
x->write = 0;
return(w+c+3);
}
/* or error if(ferror()) */
x->state = SFRECORD_ERROR;
x->count = SFRECORD_WAITTICKS;
#ifdef DEBUG_ME
post("write -> write error");
#endif
break;
};
#endif /* 0 */
return (w+c+3); /* writing was fine */
/* ok :?: write error, please close */
case SFRECORD_ERROR:
if(!(x->count--)) {
x->state = SFRECORD_CLOSE;
sfrecord_close(x);
#ifdef DEBUG_ME
post("sfrecord error writing sf: error -> close");
#endif
x->count = SFRECORD_WAITTICKS;
}
break;
/* in close state go to wait afterwards */
case SFRECORD_CLOSE:
x->please_close = 0;
/* wait until ready for close operation */
if(!(x->count--)){
x->state = SFRECORD_WAIT;
x->count = SFRECORD_WAITTICKS;
/* avoid openfiles */
if(x->fp){fclose(x->fp);x->fp = NULL;};
#ifdef DEBUG_ME
post("sfrecord: close -> wait");
#endif
}
break;
}; /*case */
return(w+c+3);
}
/* ---------------------- Setup junk -------------------------- */
static void sfrecord_dsp(t_sfrecord *x, t_signal **sp)
{
#ifdef DEBUG_ME
post("sfrecord: dsp");
post("offset = %f\tspeed = %f\t", x->offset, x->x_speed);
#endif
switch (x->x_channels) {
case 1:
dsp_add(sfrecord_perform, 3, x,
sp[0]->s_vec, /* in 1 */
sp[0]->s_n);
break;
case 2:
dsp_add(sfrecord_perform, 4, x,
sp[0]->s_vec,
sp[1]->s_vec,
sp[0]->s_n);
break;
case 4:
dsp_add(sfrecord_perform, 6, x,
sp[0]->s_vec,
sp[1]->s_vec,
sp[2]->s_vec,
sp[3]->s_vec,
sp[0]->s_n);
break;
case 8:
dsp_add(sfrecord_perform, 9, x,
sp[0]->s_vec,
sp[1]->s_vec,
sp[2]->s_vec,
sp[3]->s_vec,
sp[4]->s_vec,
sp[5]->s_vec,
sp[6]->s_vec,
sp[7]->s_vec,
sp[0]->s_n);
break;
}
}
/* create sfrecord with args <channels> <skip> */
static void *sfrecord_new(t_floatarg chan)
{
t_sfrecord *x = (t_sfrecord *)pd_new(sfrecord_class);
t_int c = chan;
switch(c){
/* ok */
case 1: case 2: case 4: case 8: break;
/* try it, good luck ... */
case 3: c = 2; break;
case 5: case 6: case 7: c=7; break;
default: c=1; break;
}
outlet_new(&x->x_obj, gensym("float"));
x->x_channels = c;
x->x_skip = x->x_offset = 0;
x->skip = 1;
x->offset = 0.;
x->x_speed = 1.0;
x->write = 0;
x->please_stop = 0;
x->please_close = 0;
x->state = SFRECORD_WAIT;
x->count = 0;
x->filename = NULL;
x->fp = NULL;
x->swap = 1;
c--;
while (c--) {
#ifdef DEBUG_ME
post("create extra channel #%d", c);
#endif
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("signal"), gensym("signal")); /* channels inlet */
}
x->filep = t_getbytes(DACBLKSIZE*sizeof(short)*x->x_channels);
#ifdef DEBUG_ME
post("get_bytes DACBLKSIZE*%d*%d->%ld",sizeof(short),x->x_channels,x->filep);
post("sfrecord: x_channels = %d, x_speed = %f, x_skip = %f",x->x_channels,x->x_speed,x->x_skip);
#endif
return (x);
}
static void sfrecord_helper(void)
{
post("\nsfplay :: a raw-data soundfile-recorder");
post("\ncreation :: sfrecord <channels>\t: channels set the number of channels");
post("\nopen [<path>]<filename> [<endianity>]\t:: open b(ig) or l(ittle) endian file"
"\nclose\t\t\t:: close file (aka eject)"
"\nstart\t\t\t:: start playing"
"\nstop\t\t\t:: stop playing"
"\nbang\t\t\t:: outputs the current state (1_recording, 0_not-recording)");
post("\n\nyou can also start recording with a '1', and stop with a '0'");
}
static void sfrecord_free(t_sfrecord *x)
{
freebytes(x->filep, DACBLKSIZE*sizeof(short)*x->x_channels);
}
void sfrecord_setup(void)
{
sfrecord_class = class_new(gensym("sfrecord"), (t_newmethod)sfrecord_new, (t_method)sfrecord_free,
sizeof(t_sfrecord), 0, A_DEFFLOAT, A_DEFFLOAT,0);
class_addmethod(sfrecord_class, nullfn, gensym("signal"), 0);
class_addmethod(sfrecord_class, (t_method)sfrecord_dsp, gensym("dsp"), 0);
/* method open with filename */
class_addmethod(sfrecord_class, (t_method)sfrecord_open, gensym("open"), A_SYMBOL,A_SYMBOL,A_NULL);
class_addmethod(sfrecord_class, (t_method)sfrecord_close, gensym("close"), A_NULL);
class_addmethod(sfrecord_class, (t_method)sfrecord_start, gensym("start"), A_NULL);
class_addmethod(sfrecord_class, (t_method)sfrecord_stop, gensym("stop"), A_NULL);
/* start/stop with 0/1 */
class_addfloat(sfrecord_class, sfrecord_float);
/* bang out the current-state to the outlet*/
class_addbang(sfrecord_class,sfrecord_bang);
/* some help */
class_addmethod(sfrecord_class, (t_method)sfrecord_helper, gensym("help"), A_NULL);
class_sethelpsymbol(sfrecord_class, gensym("sf-play_record"));
zexy_register("sfrecord");
}
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