int main( int argc, char** argv )
{
int val = atoi( argv[1] );
printf( "reversed: %i\n", reverse_int( val ) );
printf( "reversed2: %i\n", reverse_int2( val ) );
printf( "\n" );
}
off_t
_writeit(int fno)
{
int i;
off_t n=0;
short tisamp,*tibuf;
float tfsamp,*tfbuf;
float peakval;
if(!status[fno]) {
rtcmix_warn(NULL, "File %d is write-protected!\n",fno);
closesf();
}
#ifdef OLDRT
/* to play before writing */
if((sfclass(&sfdesc[fno]) == SF_SHORT) && play_is_on)
playbuf(sndbuf[fno],nbytes/SF_SHORT);
/* swap and/or play floating point files */
if(play_is_on && (sfclass(&sfdesc[fno]) == SF_FLOAT)) {
peakval = getpeakval(peakflag,fno);
playfbuf(sndbuf[fno],peakval,swap_bytes[fno],nbytes/SF_FLOAT);
}
else { /* just swap if necessary */
if(swap_bytes[fno] && (sfclass(&sfde sc[fno]) == SF_FLOAT))
bytrev4(sndbuf[fno],nbytes);
}
#endif
if(swap_bytes[fno]) {
/* SHORT file */
if(sfclass(&sfdesc[fno]) == SF_SHORT) {
tibuf = (short *)sndbuf[fno];
for (i=0;i<nbytes/SF_SHORT;i++) {
tisamp = *(tibuf+i);
*(tibuf+i) = (short) reverse_int2(&tisamp);
}
}
/* FLOAT file */
if(sfclass(&sfdesc[fno]) == SF_FLOAT) {
tfbuf = (float *)sndbuf[fno];
for (i=0;i<nbytes/SF_FLOAT;i++) {
/* byte_reverse4(tfbuf+i); */
/* tfsamp = *(tfbuf+i); */
/* *(tfbuf+i) = (float) reverse_int4(&tfsamp); */
tfsamp = *(tfbuf+i);
byte_reverse4(&tfsamp);
*(tfbuf+i) = tfsamp;
}
}
}
if(play_is_on < 2) {
if((n = write(sfd[fno],sndbuf[fno],nbytes)) != nbytes) {
rtcmix_warn("CMIX", "Bad UNIX write, file %d, nbytes = %lld\n",fno,(long long)n);
perror("write");
closesf();
}
/* update output file size */
if((filepointer[fno] += nbytes) > originalsize[fno])
originalsize[fno] = filepointer[fno];
}
if(!play_is_on)
printf(".");
return(n);
}
off_t
_readit(int fno)
{
int i;
off_t n, maxread;
short tisamp,*tibuf;
float tfsamp,*tfbuf;
/* check to see if we are attempting to read beyond current
* EOF, and if so adjust amount to be read and flush rest of buffer
*/
/* From make warnings */
n=0;
if(filepointer[fno] > originalsize[fno])
maxread = 0;
else if((filepointer[fno]+nbytes) > originalsize[fno])
maxread = originalsize[fno]-filepointer[fno];
else
maxread = nbytes;
if((play_is_on < 3) || (status[fno] == 0)) {
if((n = read(sfd[fno],sndbuf[fno],maxread)) != maxread) {
if(!n) {
/*if(istape[fno] && n) continue;*/
perror("read");
rtcmix_warn("CMIX", "Bad UNIX read, nbytes = %lld\n",(long long)n);
rtcmix_warn(NULL, " sfd[fno]= %d\n",sfd[fno]);
closesf();
}
}
}
if(((play_is_on==2) && !maxread) || ((play_is_on==3) && (status[fno])))
memset(sndbuf[fno],'\0',nbytes); /* clean buffer out if not readin */
/* Swap input buffer */
if(maxread && swap_bytes[fno]) {
/* SHORT file */
if(sfclass(&sfdesc[fno]) == SF_SHORT) {
tibuf = (short *)sndbuf[fno];
for (i=0;i<nbytes/SF_SHORT;i++) {
tisamp = *(tibuf+i);
*(tibuf+i) = reverse_int2(&tisamp);
}
}
/* FLOAT file */
if(sfclass(&sfdesc[fno]) == SF_FLOAT) {
tfbuf = (float *)sndbuf[fno];
for (i=0;i<nbytes/SF_FLOAT;i++) {
/* byte_reverse4(tfbuf+i); */
/* tfsamp = *(tfbuf+i); */
/* *(tfbuf+i) = (float)reverse_int4(&tfsamp); */
tfsamp = *(tfbuf+i);
byte_reverse4(&tfsamp);
*(tfbuf+i) = tfsamp;
}
}
}
/* if we haven't read in full buffer, zero out rest of buffer,
* and adjust filepointer with lseek. Otherwise just update
* filepointer. This will position pointer properly for any
* situation. Only a write will change physical size of file.
*/
if(play_is_on < 2) {
if(maxread < nbytes) {
for(n=maxread; n<nbytes; n++) *(sndbuf[fno] + n) = 0;
filepointer[fno] = lseek(sfd[fno],(nbytes-maxread),1);
}
else filepointer[fno] += nbytes;
}
else filepointer[fno] += nbytes;
return(maxread ? n : maxread);
}
int
endnote(int xno)
{
struct timeval tp;
struct timezone tzp;
int i,j,final_bytes,fno;
float notepeak,*pk;
double total;
long *pkloc;
struct tms timbuf;
float peakval;
struct stat st;
short tisamp,*tibuf;
float tfsamp,*tfbuf;
fno = ABS(xno); /* if fno is negative it means don't write
final buffer,just pretend to */
if(wipe_is_off[fno])
_backup(fno);
/* else _flushbuf(fno); */
if(!peakoff[fno]) _chkpeak(fno);
final_bytes = pointer[fno] * sfclass(&sfdesc[fno]);
/* This was DS's and PL's version of real time */
/* Not used in this version */
#ifdef OLDRT
/* SHOULD NOT PLAY HERE -- LAST BUFFERS ALREADY PLAYED */
if ((sfclass(&sfdesc[fno]) == SF_SHORT) && play_is_on)
playbuf(sndbuf[fno],final_bytes/SF_SHORT);
else if ((sfclass(&sfdesc[fno]) == SF_FLOAT) && play_is_on) {
peakval = getpeakval(peakflag,fno);
playfbuf(sndbuf[fno],peakval,swap[fno],nbytes/SF_FLOAT);
}
#endif
/* write out only fractional part of last record, god bless unix!*/
if(pointer[fno] && (play_is_on < 2)) {
if(xno >= 0) {
/* Swap bytes if necessary */
if(final_bytes && swap_bytes[fno]) {
/* SHORT file */
if(sfclass(&sfdesc[fno]) == SF_SHORT) {
tibuf = (short *)sndbuf[fno];
for (i=0;i<final_bytes/SF_SHORT;i++) {
tisamp = *(tibuf+i);
*(tibuf+i) = reverse_int2(&tisamp);
}
}
/* FLOAT file */
if(sfclass(&sfdesc[fno]) == SF_FLOAT) {
tfbuf = (float *)sndbuf[fno];
for (i=0;i<final_bytes/SF_FLOAT;i++) {
/* byte_reverse4(tfbuf+i); */
/* tfsamp = *(tfbuf+i); */
/* *(tfbuf+i) = (float)reverse_int4(&tfsamp); */
tfsamp = *(tfbuf+i);
byte_reverse4(&tfsamp);
*(tfbuf+i) = tfsamp;
}
}
}
if((i = write(sfd[fno],sndbuf[fno],final_bytes))
!= final_bytes) {
rtcmix_warn("CMIX", "Bad UNIX write, file %d, nbytes = %d\n",
fno,i);
perror("write");
closesf();
}
}
if((filepointer[fno] += final_bytes) > originalsize[fno])
if(xno >0) originalsize[fno] = filepointer[fno];
}
/* DT: if(play_is_on) flush_buffers(); */
pk = (float *)peak[fno];
pkloc = (long *)peakloc[fno];
total = ((double)filepointer[fno]-headersize[fno])
/((double)sfclass(&sfdesc[fno]))
/(double)sfchans(&sfdesc[fno])/SR();
/* _writeit(fno); write out final record */
for(i = 0,notepeak=0; i<sfchans(&sfdesc[fno]); i++) {
if(*(pk+i) > sfmaxamp(&sfm[fno],i)) {
sfmaxamp(&sfm[fno],i) = *(pk+i);
sfmaxamploc(&sfm[fno],i) = *(pkloc+i);
}
if(*(pk+i) > notepeak) notepeak = *(pk+i);
}
gettimeofday(&tp,&tzp);
sfmaxamptime(&sfm[fno]) = tp.tv_sec;
if((filepointer[fno] = lseek(sfd[fno],0L,0)) < 0) {
rtcmix_warn("CMIX", "Bad lseek to beginning of file\n");
perror("lseek");
closesf();
}
times(&timbuf);
#ifndef MAXMSP // this really isn't used...
printf("\n(%6.2f)",(float)(
(timbuf.tms_stime-clockin[fno].tms_stime)+
(timbuf.tms_utime-clockin[fno].tms_utime))/60.);
printf(" %9.4f .. %9.4f MM ",starttime[fno],total);
if(!peakoff[fno]) {
for(j=0;j<sfchans(&sfdesc[fno]);j++)
printf(" c%d=%e",j,*(pk+j));
printf("\n");
if(punch[fno]) {
printf("alter(%e,%e,%e/%e",
(double)starttime[fno],(double)(total-starttime[fno]),
punch[fno],notepeak);
for(i=0; i<sfchans(&sfdesc[fno]); i++)
printf(",1 ");
printf(")\n");
printf("mix(%g,%g,%g,%g/%g",
(double)starttime[fno],(double)starttime[fno],-(double)(total-starttime[fno]),punch[fno],notepeak);
for(i=0; i<sfchans(&sfdesc[fno]); i++)
printf(",%d ",i);
printf(")\n");
}
}
#endif // MAXMSP
/* Copy the updated peak stats into the SFHEADER struct for this
output file. (No swapping necessary.)
*/
memcpy(&(sfmaxampstruct(&sfdesc[fno])), &sfm[fno], sizeof(SFMAXAMP));
/* Write header to file. */
if (wheader(sfd[fno], &sfdesc[fno])) {
rtcmix_warn("endnote", "bad header write\n");
perror("write");
closesf();
}
return 0;
}
/* Let user load a function table with samples from a sound file. The file
can be 16-bit integer or 32-bit floating point in either byte order, and
in any of the header formats recognized by sndlib. The makegen syntax
used in Minc is:
frames_read = makegen(slot, 1, size, filename, inskip [, inchan, dump])
<size> is the duration (in seconds) of the sound file segment, or if it's
negative, the number of sample frames to read. If <size> is zero, the
whole file is slurpped in. (Beware with large files -- there is no
check on memory consumption here!)
<filename> is a double-quoted pathname (as in rtinput).
<inskip> is the time (in seconds) to skip before reading, or if it's
negative, the number of sample frames to skip before reading.
If <inchan> is missing, reads all channels from the file; otherwise,
reads just the channel specified by <inchan> (with zero as first chan).
If <dump> is 1, then dumps the gen table to a header-less sound file,
called "dumpaudio.raw," in the current directory. The file is 32-bit
float, using the host byte order, <inchan> chans, and the sampling
rate in the source file's header.
As usual, if the slot number is positive, the table will be rescaled
to fit in the range [-1,1]; if it's negative, it will not be rescaled.
Returns to Minc the number of sample frames read.
JGG, 07 Feb 2001
*/
double
gen1(struct gen *gen, char *sfname)
{
int i, fd, header_type, data_format, data_location, inchan;
int gen_chans, gen_frames, gen_samps, file_chans, file_frames;
int start_frame, bytes_per_samp, byteswap, is_float, dump;
int buf_start_frame, end_frame, frames_read, buf_frames;
long file_samps;
off_t seek_to;
float request_dur, filedur, inskip;
double srate, *block, *blockp;
char *buf;
request_dur = gen->pvals[0];
inskip = gen->pvals[2];
if (gen->nargs > 3)
inchan = (int) gen->pvals[3];
else
inchan = -1; /* read all chans */
dump = gen->nargs > 4? (int) gen->pvals[4] : 0;
fd = open_sound_file("gen1", sfname, &header_type, &data_format,
&data_location, &srate, &file_chans, &file_samps);
if (fd == -1)
return die("gen1", "Can't open input file: \"%s\"!", sfname);
if (srate != SR()) {
rtcmix_warn("gen1", "The input file sampling rate is %g, but "
"the output rate is currently %g.", srate, SR());
}
file_frames = file_samps / file_chans;
if (inchan == -1)
gen_chans = file_chans;
else
gen_chans = 1;
if (file_chans == 1)
inchan = -1; /* more efficient copy below */
if (inchan >= file_chans)
return die("gen1", "You asked for channel %d of a %d-channel file. (\"%s\")",
inchan, file_chans, sfname);
if (request_dur < 0.0)
gen_frames = (int) -request_dur;
else if (request_dur > 0.0)
gen_frames = (int) (request_dur * srate);
else
gen_frames = file_frames;
if (inskip < 0.0)
start_frame = (int) -inskip;
else
start_frame = (int) (inskip * srate);
if (start_frame + gen_frames > file_frames)
gen_frames = file_frames - start_frame;
gen_samps = gen_frames * gen_chans;
block = (double *) malloc((size_t) (gen_samps * sizeof(double)));
if (block == NULL)
return die("gen1", "Not enough memory for function table %d.", gen->slot);
buf = (char *) malloc((size_t) BUFSIZE);
if (buf == NULL) {
free(block);
return die("gen1", "Not enough memory for temporary buffer.");
}
bytes_per_samp = mus_data_format_to_bytes_per_sample(data_format);
seek_to = data_location + (start_frame * file_chans * bytes_per_samp);
if (lseek(fd, seek_to, SEEK_SET) == -1) {
free(block);
free(buf);
return die("gen1", "lseek() failed");
}
#if MUS_LITTLE_ENDIAN
byteswap = IS_BIG_ENDIAN_FORMAT(data_format);
#else
byteswap = IS_LITTLE_ENDIAN_FORMAT(data_format);
#endif
is_float = IS_FLOAT_FORMAT(data_format);
buf_frames = (BUFSIZE / bytes_per_samp) / file_chans;
end_frame = start_frame + gen_frames;
blockp = block;
frames_read = 0;
buf_start_frame = start_frame;
for ( ; buf_start_frame < end_frame; buf_start_frame += frames_read) {
int samps_read;
long bytes_read;
if (buf_start_frame + buf_frames > end_frame) { /* last buffer */
int samps = (end_frame - buf_start_frame) * file_chans;
bytes_read = read(fd, buf, samps * bytes_per_samp);
}
else
bytes_read = read(fd, buf, BUFSIZE);
if (bytes_read == -1) {
free(block);
free(buf);
return die("gen1", "read() failed");
}
if (bytes_read == 0) /* EOF, somehow */
break;
samps_read = bytes_read / bytes_per_samp;
frames_read = samps_read / file_chans;
if (is_float) {
float *bufp = (float *) buf;
if (inchan == -1) { /* store all chans */
if (byteswap) {
for (i = 0; i < samps_read; i++) {
byte_reverse4(bufp); /* modify *bufp in place */
*blockp++ = (double) *bufp++;
}
}
else {
for (i = 0; i < samps_read; i++)
*blockp++ = (double) *bufp++;
}
}
else { /* store only inchan */
bufp += inchan;
if (byteswap) {
for (i = 0; i < samps_read; i += file_chans) {
byte_reverse4(bufp); /* modify *bufp in place */
*blockp++ = (double) *bufp;
bufp += file_chans;
}
}
else {
for (i = 0; i < samps_read; i += file_chans) {
*blockp++ = (double) *bufp;
bufp += file_chans;
}
}
}
}
else { /* is shortint file */
short *bufp = (short *) buf;
if (inchan == -1) { /* store all chans */
if (byteswap) {
for (i = 0; i < samps_read; i++, bufp++) {
short samp = reverse_int2(bufp);
*blockp++ = (double) samp;
}
}
else {
for (i = 0; i < samps_read; i++)
*blockp++ = (double) *bufp++;
}
}
else { /* store only inchan */
bufp += inchan;
if (byteswap) {
for (i = 0; i < samps_read; i += file_chans) {
short samp = reverse_int2(bufp);
*blockp++ = (double) samp;
bufp += file_chans;
}
}
else {
for (i = 0; i < samps_read; i += file_chans) {
*blockp++ = (double) *bufp;
bufp += file_chans;
}
}
}
}
}
free(buf);
sndlib_close(fd, 0, 0, 0, 0);
gen->array = block;
gen->size = gen_samps;
fnscl(gen);
if (dump)
dump_gen_to_raw_file(block, gen_samps);
return (double) gen_frames;
}
static int
getisample(double sampleno, float *c, int input)
{
ssize_t RECSIZE = bufsize[input];
ssize_t BPREC = RECSIZE * sizeof(short);
ssize_t BPFRAME = sfchans(&sfdesc[input]) * sizeof(short);
ssize_t FPREC = RECSIZE/sfchans(&sfdesc[input]);
int sample,i,j;
ssize_t nbytes;
signed short *array = (short *)sndbuf[input];
float tempsample1;
float tempsample2;
float fraction;
static int oldsample = 0;
static int endsample = 0;
sample = (int)sampleno;
fraction = sampleno - (double)sample;
if(!((sample >= oldsample) && (sample < endsample))) {
/* sflseek (sfheader.h) assumes header size, so can't use it */
if(lseek(sfd[input], (sample * BPFRAME) + headersize[input],
SEEK_SET) <= 0) {
rterror(NULL, "badlseek on inputfile\n");
closesf();
}
nbytes = read(sfd[input], (char *)array, BPREC);
if (nbytes == -1) {
perror("getisample: read");
return 0;
}
if (nbytes == 0) {
rterror(NULL, "reached eof on input file\n");
return 0;
}
if (nbytes < BPREC) { /* zero out rest of sndbuf */
ssize_t n;
for (n = nbytes; n < BPREC; n++)
sndbuf[input][n] = 0;
}
oldsample = sample;
endsample = oldsample + FPREC - 1;
}
for(i=(sample-oldsample)*sfchans(&sfdesc[input]),j=0;
j<sfchans(&sfdesc[input]); i++,j++) {
if (swap_bytes[input]) {
tempsample1 = (signed short)reverse_int2(array+i);
tempsample2 = (signed short)reverse_int2(array+i+sfchans(&sfdesc[input]));
*(c+j) = tempsample1 + fraction *
((float)((signed short)tempsample2 - tempsample1));
}
else {
*(c+j) = (float)*(array+i) + fraction *
((float) *(array+i+sfchans(&sfdesc[input])) -
(float) *(array+i));
}
}
return(1);
}