This is stereo.c in view mode; [Download] [Up]
#include <stdio.h>
#include "../H/ugens.h"
#include "../H/sfheader.h"
#include <signal.h>
#include "mix.h"
static SFCODE ampcode = {
SF_MAXAMP,
sizeof(SFMAXAMP) + sizeof(SFCODE)
};
extern int relampsign;
extern float begin_line,end_line;
extern int offset;
extern SFHEADER sfdesc[NFILES];
extern int pointer[NFILES]; /* to be used as pointer within sound sndbuf */
extern int bufsize[NFILES]; /* word length of sndbuf */
extern char *sndbuf[NFILES]; /* address of sndbuf */
extern char peakoff[NFILES];
extern char *peak[NFILES];
extern float SR;
extern int input,output,non,outch[4],inpch[4];
extern int inbufsize,outbufsize,nsamps,counter,skip;
extern float amp,dur,enval;
extern int clobber;
extern int lineset;
extern float array[SIZE],tabs[2];
float left[4],right[4];
extern int RESET; /* times per sec to reinitialize envelope */
int test_stereo_off = 1;
double test_stereo(p,n_args)
float *p;
{
double output;
double stereo();
test_stereo_off = 0;
output = stereo(p,n_args);
test_stereo_off = 1;
return(output);
}
stereo(p,n_args)
float *p;
int n_args;
{
int jj;
char *cp,*getsfcode();
float opeak,*pk;
double _dur();
SFMAXAMP sfm;
input = 0;
output = 1;
if(!p[2]) p[2] = _dur(&p[2],1);
dur = (p[2] < 0) ? -p[2] : (p[2] - p[0]);
if(!lineset) {
for(jj=0; jj<SIZE; jj++) array[jj] = 1;
fprintf(stderr,"Set phrase curve to all 1's\n");
lineset = 1;
}
setnote(p[0],dur,input);
nsamps = setnote(p[1],dur,output);
_backup(output);
inbufsize = bufsize[input];
outbufsize = bufsize[output];
pk = (float *)peak[output];
if(end_line) dur = end_line - begin_line;
tableset(dur,SIZE,tabs);
if(end_line) /* this will give us global timefor setline */
offset = (p[1] - begin_line) * SR;
else offset = 0;
skip = SR/(float)RESET; /* number of samples between reinits */
counter = 0; /* initialize counter */
amp = p[3];
if(!relampsign) amp = p[3];
else {
cp = getsfcode(&sfdesc[input],SF_MAXAMP);
bcopy(cp + sizeof(SFCODE), (char *) &sfm, sizeof(SFMAXAMP));
for(jj=0,opeak=0; jj<sfchans(&sfdesc[input]); jj++)
if(sfmaxamp(&sfm,jj) > opeak) opeak = sfmaxamp(&sfm,jj);
printf("Peak amplitude of input file is %e\n",opeak);
amp = p[3]/opeak;
}
non=0;
for(jj = n_args; jj < (4 + sfchans(&sfdesc[input])); jj++) p[jj] = -1;
for(jj = 0; jj<sfchans(&sfdesc[input]); jj++) {
if(p[4+jj] >= 0) {
left[non] = p[4+jj];
right[non] = 1.-p[4+jj];
inpch[non++] = jj;
}
}
if(sfclass(&sfdesc[input]) == SHORT) {
if(sfclass(&sfdesc[output]) == SHORT) {
stereoii();
return(MAX(pk[0],pk[1]));
}
if(sfclass(&sfdesc[output]) == FLOAT) {
stereoif();
return(MAX(pk[0],pk[1]));
}
}
else {
if(sfclass(&sfdesc[output]) == SHORT) {
stereofi();
return(MAX(pk[0],pk[1]));
}
if(sfclass(&sfdesc[output]) == FLOAT) {
stereoff();
return(MAX(pk[0],pk[1]));
}
}
}
stereoii()
{
register short *ibuf,*obuf;
register loop,jj,ipoint,opoint;
register inchnl,outchnl;
ibuf = (short *)sndbuf[input];
obuf = (short *)sndbuf[output];
inchnl = sfchans(&sfdesc[input]);
outchnl = sfchans(&sfdesc[output]);
opoint=pointer[output]; /* copy to save offset lookups every time*/
ipoint=pointer[input];
loop=nsamps;
if(!clobber) while(loop--) {
if(!counter--) {
enval = tablei(nsamps+1-loop+offset,array,tabs) * amp;
counter = skip;
}
for(jj = 0; jj<non; jj++) {
*(obuf + opoint) += enval * left[jj] *
*(ibuf + ipoint + inpch[jj]);
*(obuf + opoint + 1) += enval * right[jj] *
*(ibuf + ipoint + inpch[jj]);
}
ipoint += inchnl;
opoint += outchnl;
if(ipoint >= inbufsize ) {
ipoint = 0;
if(_readit(input) == 0) {
fprintf(stderr,"reached eof on input\n");
goto out;
}
}
if(opoint >= outbufsize ) {
pointer[output] = opoint;
if(!peakoff[output]) _chkpeak(output);
if(test_stereo_off) _writeit(output);
else _forward(output);
_readit(output);
_backup(output);
opoint = 0;
}
}
else while(loop--) {
if(!counter--) {
enval = tablei(nsamps+1-loop+offset,array,tabs) * amp;
counter = skip;
}
for(jj = 0; jj<non; jj++) {
*(obuf + opoint) = enval * left[jj] *
*(ibuf + ipoint + inpch[jj]);
*(obuf + opoint + 1) = enval * right[jj] *
*(ibuf + ipoint + inpch[jj]);
}
ipoint += inchnl;
opoint += outchnl;
if(ipoint >= inbufsize ) {
ipoint = 0;
if(_readit(input) == 0) {
fprintf(stderr,"reached eof on input\n");
goto out;
}
}
if(opoint >= outbufsize ) {
pointer[output] = opoint;
if(!peakoff[output]) _chkpeak(output);
if(test_stereo_off) _writeit(output);
else _forward(output);
_readit(output);
_backup(output);
opoint = 0;
}
}
out: pointer[input] = ipoint;
pointer[output] = opoint;
if(test_stereo_off){
_writeit(output);
endnote(output);
}
else {
_forward(output);
endnote(-output);
}
}
stereoif()
{
register short *ibuf;
register float *obuf;
register loop,jj,ipoint,opoint;
register inchnl,outchnl;
ibuf = (short *)sndbuf[input];
obuf = (float *)sndbuf[output];
inchnl = sfchans(&sfdesc[input]);
outchnl = sfchans(&sfdesc[output]);
opoint=pointer[output]; /* copy to save offset lookups every time*/
ipoint=pointer[input];
loop=nsamps;
if(!clobber) while(loop--) {
if(!counter--) {
enval = tablei(nsamps+1-loop+offset,array,tabs) * amp;
counter = skip;
}
for(jj = 0; jj<non; jj++) {
*(obuf + opoint) += enval * left[jj] *
(float) *(ibuf + ipoint + inpch[jj]);
*(obuf + opoint + 1) += enval * right[jj] *
(float) *(ibuf + ipoint + inpch[jj]);
}
ipoint += inchnl;
opoint += outchnl;
if(ipoint >= inbufsize ) {
ipoint = 0;
if(_readit(input) == 0) {
fprintf(stderr,"reached eof on input\n");
goto out;
}
}
if(opoint >= outbufsize ) {
pointer[output] = opoint;
if(!peakoff[output]) _chkpeak(output);
if(test_stereo_off) _writeit(output);
else _forward(output);
_readit(output);
_backup(output);
opoint = 0;
}
}
else while(loop--) {
if(!counter--) {
enval = tablei(nsamps+1-loop+offset,array,tabs) * amp;
counter = skip;
}
for(jj = 0; jj<non; jj++) {
*(obuf + opoint) = enval * left[jj] *
(float) *(ibuf + ipoint + inpch[jj]);
*(obuf + opoint + 1) = enval * right[jj] *
(float) *(ibuf + ipoint + inpch[jj]);
}
ipoint += inchnl;
opoint += outchnl;
if(ipoint >= inbufsize ) {
ipoint = 0;
if(_readit(input) == 0) {
fprintf(stderr,"reached eof on input\n");
goto out;
}
}
if(opoint >= outbufsize ) {
pointer[output] = opoint;
if(!peakoff[output]) _chkpeak(output);
if(test_stereo_off) _writeit(output);
else _forward(output);
_readit(output);
_backup(output);
opoint = 0;
}
}
out: pointer[input] = ipoint;
pointer[output] = opoint;
if(test_stereo_off){
_writeit(output);
endnote(output);
}
else {
_forward(output);
endnote(-output);
}
}
stereofi()
{
register short *obuf;
register float *ibuf;
register loop,jj,ipoint,opoint;
register inchnl,outchnl;
ibuf = (float *)sndbuf[input];
obuf = (short *)sndbuf[output];
inchnl = sfchans(&sfdesc[input]);
outchnl = sfchans(&sfdesc[output]);
opoint=pointer[output]; /* copy to save offset lookups every time*/
ipoint=pointer[input];
loop=nsamps;
if(!clobber) while(loop--) {
if(!counter--) {
enval = tablei(nsamps+1-loop+offset,array,tabs) * amp;
counter = skip;
}
for(jj = 0; jj<non; jj++) {
*(obuf + opoint) += enval * left[jj] *
*(ibuf + ipoint + inpch[jj]);
*(obuf + opoint + 1) += enval * right[jj] *
*(ibuf + ipoint + inpch[jj]);
}
ipoint += inchnl;
opoint += outchnl;
if(ipoint >= inbufsize ) {
ipoint = 0;
if(_readit(input) == 0) {
fprintf(stderr,"reached eof on input\n");
goto out;
}
}
if(opoint >= outbufsize ) {
pointer[output] = opoint;
if(!peakoff[output]) _chkpeak(output);
if(test_stereo_off) _writeit(output);
else _forward(output);
_readit(output);
_backup(output);
opoint = 0;
}
}
else while(loop--) {
if(!counter--) {
enval = tablei(nsamps+1-loop+offset,array,tabs) * amp;
counter = skip;
}
for(jj = 0; jj<non; jj++) {
*(obuf + opoint) = enval * left[jj] *
*(ibuf + ipoint + inpch[jj]);
*(obuf + opoint + 1) = enval * right[jj] *
*(ibuf + ipoint + inpch[jj]);
}
ipoint += inchnl;
opoint += outchnl;
if(ipoint >= inbufsize ) {
ipoint = 0;
if(_readit(input) == 0) {
fprintf(stderr,"reached eof on input\n");
goto out;
}
}
if(opoint >= outbufsize ) {
pointer[output] = opoint;
if(!peakoff[output]) _chkpeak(output);
if(test_stereo_off) _writeit(output);
else _forward(output);
_readit(output);
_backup(output);
opoint = 0;
}
}
out: pointer[input] = ipoint;
pointer[output] = opoint;
if(test_stereo_off){
_writeit(output);
endnote(output);
}
else {
_forward(output);
endnote(-output);
}
}
stereoff()
{
register float *ibuf,*obuf;
register loop,jj,ipoint,opoint;
register inchnl,outchnl;
ibuf = (float *)sndbuf[input];
obuf = (float *)sndbuf[output];
inchnl = sfchans(&sfdesc[input]);
outchnl = sfchans(&sfdesc[output]);
opoint=pointer[output]; /* copy to save offset lookups every time*/
ipoint=pointer[input];
loop=nsamps;
if(!clobber) while(loop--) {
if(!counter--) {
enval = tablei(nsamps+1-loop+offset,array,tabs) * amp;
counter = skip;
}
for(jj = 0; jj<non; jj++) {
*(obuf + opoint) += enval * left[jj] *
*(ibuf + ipoint + inpch[jj]);
*(obuf + opoint + 1) += enval * right[jj] *
*(ibuf + ipoint + inpch[jj]);
}
ipoint += inchnl;
opoint += outchnl;
if(ipoint >= inbufsize ) {
ipoint = 0;
if(_readit(input) == 0) {
fprintf(stderr,"reached eof on input\n");
goto out;
}
}
if(opoint >= outbufsize ) {
pointer[output] = opoint;
if(!peakoff[output]) _chkpeak(output);
if(test_stereo_off) _writeit(output);
else _forward(output);
_readit(output);
_backup(output);
opoint = 0;
}
}
else while(loop--) {
if(!counter--) {
enval = tablei(nsamps+1-loop+offset,array,tabs) * amp;
counter = skip;
}
for(jj = 0; jj<non; jj++) {
*(obuf + opoint) = enval * left[jj] *
*(ibuf + ipoint + inpch[jj]);
*(obuf + opoint + 1) = enval * right[jj] *
*(ibuf + ipoint + inpch[jj]);
}
ipoint += inchnl;
opoint += outchnl;
if(ipoint >= inbufsize ) {
ipoint = 0;
if(_readit(input) == 0) {
fprintf(stderr,"reached eof on input\n");
goto out;
}
}
if(opoint >= outbufsize ) {
pointer[output] = opoint;
if(!peakoff[output]) _chkpeak(output);
if(test_stereo_off) _writeit(output);
else _forward(output);
_readit(output);
_backup(output);
opoint = 0;
}
}
out: pointer[input] = ipoint;
pointer[output] = opoint;
if(test_stereo_off){
_writeit(output);
endnote(output);
}
else {
_forward(output);
endnote(-output);
}
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.