int main (int argc, char**argv)
{
/* declare variables */
PSF_PROPS outprops; // properties of output soundfile
psf_format outformat = PSF_FMT_UNKNOWN;
double dur, freq, amp, peakdiff;
float val;
double minval, maxval, maxamp;
int srate, nharms;
unsigned long i, j;
int i_out;
int wavetype = -1;
int chans;
unsigned long width = DEFAULT_WIDTH;
unsigned long nbufs, outframes, remainder, nframes, framesread;
oscilt_tickfunc tickfunc = tabitick; // default table lookup is interpolating
/* init resources */
int ofd = -1;
int error = 0;
FILE *fpamp = NULL; // amplitude breakpoint file
FILE *fpfreq = NULL; // frequency breakpoint file
float* buffer = NULL;
BRKSTREAM* ampstream = NULL; // breakpoint amplitude values
BRKSTREAM* freqstream = NULL; // breakpoint frequency values
GTABLE* gtable = NULL; // wave table with guard point
OSCILT* p_osc = NULL; // oscillator using table lookup
unsigned long brkampSize = 0, // number of breakpoints
brkfreqSize = 0;
printf("TABGEN: a table lookup oscillator generator.\n");
/* check for command line options */
if (argc > 1)
{
while (argv[1][0]=='-')
{
switch(argv[1][1])
{
case('\0'):
printf("Error: you did not specify an option.\n"
"options: -wN set width of lookup table "
"to N points (default: 1024 points)\n"
" -t use truncating lookup "
"(default: interpolating lookup)\n");
return 1;
case('t'):
if (argv[1][2] == '\0')
tickfunc = tabtick;
else
{
printf("Error: %s is not a valid option.\n"
"options: -wN set width of lookup table "
"to N points (default: 1024 points)\n"
" -t use truncating lookup "
"(default: interpolating lookup)\n",
argv[1]);
return 1;
}
break;
case('w'):
if (argv[1][2] == '\0')
{
printf("Error: you did not specify a table lookup width.\n");
return 1;
}
if (argv[1][2] >= '0' && argv[1][2] <= '9')
{
width = atoi(&argv[1][2]);
if (width < 1)
{
printf("Error: table width must be at least 1\n");
return 1;
}
break;
}
default:
printf("Error: %s is not a valid option.\n"
"options: -wN set width of lookup table "
"to N points (default: 1024 points)\n"
" -t use truncating lookup "
"(default: interpolating lookup)\n",
argv[1]);
return 1;
}
argc--;
argv++;
}
}
/* check for sufficient command line input */
if (argc != ARG_NARGS)
{
printf("Error: insufficient number of arguments.\n"
"Usage: tabgen [-wN] [-t] outfile dur srate nchans amp freq type nharms\n"
" -wN: w option sets the width of the lookup table to N points\n"
" N >= 1\n"
" -t: t option selects truncating table lookup\n"
" default is interpolating table lookup\n"
" outfile: output soundfile\n"
" set to 16-bit format\n"
" use any of .wav .aiff .aif .afc .aifc formats\n"
" dur: duration of soundfile (seconds)\n"
" srate: sample rate\n"
" nchans: number of channels\n"
" amp: amplitude value or breakpoint file\n"
" 0.0 < amp <= 1.0\n"
" freq: frequency value or breakpoint file\n"
" freq >= 0.0\n"
" type: oscillator wave type\n"
" sine, square, triangle, sawup, sawdown, pulse\n"
" nharms: number of wave harmonics that are\n"
" added together in oscillator bank\n"
" nharms >= 1\n"
);
return 1;
}
/* check duration input */
dur = atof(argv[ARG_DUR]);
if (dur <= 0.0)
{
printf("Error: duration must be positive.\n");
return 1;
}
/* check sample rate input */
srate = atoi(argv[ARG_SR]);
if (srate <= 0)
{
printf("Error: sample rate must be positive.\n");
return 1;
}
outprops.srate = srate;
/* check number of channels input */
chans = atoi(argv[ARG_CHANS]);
if (chans <= STDWAVE || chans > MC_WAVE_EX)
{
printf("Error: portsf does not support %d channels.\n",
chans);
return 1;
}
outprops.chans = chans;
/* check the output soundfile extension */
outformat = psf_getFormatExt(argv[ARG_OUTFILE]);
if (outformat == PSF_FMT_UNKNOWN)
{
printf("Error: outfile extension unknown.\n"
" use any of .wav .aiff .aif .afc .aifc formats\n");
return 1;
}
outprops.format = outformat;
/* check for number of harmonics */
nharms = atoi(argv[ARG_NHARMS]);
if (nharms <= 0)
{
printf("Error: you must enter a positive number for harmonics.\n");
return 1;
}
/* get the wavetype */
int count = 0;
while (argv[ARG_TYPE][count] != '\0') count++;
switch (count)
{
case (WAVE_SINE):
if (!strcmp(argv[ARG_TYPE],"sine"))
wavetype = WAVE_SINE;
break;
case (WAVE_SAWUP):
if (!strcmp(argv[ARG_TYPE],"sawup"))
wavetype = WAVE_SAWUP;
/* case (WAVE_PULSE): */
if (!strcmp(argv[ARG_TYPE],"pulse"))
wavetype = WAVE_PULSE;
break;
case (WAVE_SQUARE):
if (!strcmp(argv[ARG_TYPE],"square"))
wavetype = WAVE_SQUARE;
break;
case (WAVE_SAWDOWN):
if (!strcmp(argv[ARG_TYPE],"sawdown"))
wavetype = WAVE_SAWDOWN;
break;
case (WAVE_TRIANGLE):
if (!strcmp(argv[ARG_TYPE],"triangle"))
wavetype = WAVE_TRIANGLE;
break;
default:
wavetype = -1;
}
if (wavetype < 0)
{
printf("Error: %s is not a valid wave type.\n"
"wavetype: sine, square, triangle, sawup, sawdown, pulse\n",
argv[ARG_TYPE]);
return 1;
}
/* start portsf */
psf_init();
/* create output soundfile - set to 16-bit by default */
outprops.samptype = PSF_SAMP_16;
outprops.chformat = PSF_STDWAVE;
ofd = psf_sndCreate(argv[ARG_OUTFILE],&outprops,0,0,PSF_CREATE_RDWR);
if (ofd < 0)
{
printf("Error: unable to create soundfile \"%s\"\n",
argv[ARG_OUTFILE]);
return 1;
}
/* resources have been gathered at this point
use goto upon hitting any errors */
/* get amplitude value or breakpoint file */
fpamp = fopen(argv[ARG_AMP],"r");
if (fpamp == NULL)
{
/* if the user specified a non-existant breakpoint file
or didn't specify a breakpoint value */
if ( (argv[ARG_AMP][0] < '0' || argv[ARG_AMP][0] > '9') &&
(argv[ARG_AMP][0] != '.' && argv[ARG_AMP][0] != '-') ||
(argv[ARG_AMP][0] == '.' && (argv[ARG_AMP][1] < '0' || argv[ARG_AMP][1] > '9')) ||
(argv[ARG_AMP][0] == '-' && (argv[ARG_AMP][1] < '0' || argv[ARG_AMP][1] > '9') && argv[ARG_AMP][1] != '.') )
{
printf("Error: breakpoint file \"%s\" does not exist.\n",
argv[ARG_AMP]);
error++;
goto exit;
}
/* the user specified a breakpoint value */
amp = atof(argv[ARG_AMP]);
if (amp <= 0.0 || amp > 1.0)
{
printf("Error: amplitude value out of range.\n"
" 0.0 < amp <= 1.0\n");
error++;
goto exit;
}
}
else
{
/* gather breakpoint values */
ampstream = bps_newstream(fpamp,outprops.srate,&brkampSize);
if (ampstream == NULL)
{
printf("Error reading breakpoint values from file \"%s\".\n",
argv[ARG_AMP]);
error++;
goto exit;
}
if (bps_getminmax(ampstream,&minval,&maxval))
{
printf("Error: unable to read breakpoint range "
"from file \"%s\".\n", argv[ARG_AMP]);
error++;
goto exit;
}
if (minval <= 0.0 || minval > 1.0 || maxval <= 0.0 || maxval > 1.0)
{
printf("Error: breakpoint amplitude values out of range in file \"%s\"\n"
" 0.0 < amp <= 1.0\n", argv[ARG_AMP]);
error++;
goto exit;
}
maxamp = maxval; // retain the maximum breakpoint amplitude value
}
/* get frequency value or breakpoint file */
fpfreq = fopen(argv[ARG_FREQ],"r");
if (fpfreq == NULL)
{
if ( (argv[ARG_FREQ][0] < '0' || argv[ARG_FREQ][0] > '9') &&
(argv[ARG_FREQ][0] != '.' && argv[ARG_FREQ][0] != '-') ||
(argv[ARG_FREQ][0] == '.' && (argv[ARG_FREQ][1] < '0' || argv[ARG_FREQ][1] > '9')) ||
(argv[ARG_FREQ][0] == '-' && (argv[ARG_FREQ][1] < '0' || argv[ARG_FREQ][1] > '9') && argv[ARG_FREQ][1] != '.') )
{
printf("Error: breakpoint file \"%s\" does not exist.\n",
argv[ARG_FREQ]);
error++;
goto exit;
}
freq = atof(argv[ARG_FREQ]);
if (freq <= 0.0)
{
printf("Error: frequency must be positive.\n");
error++;
goto exit;
}
}
else
{
freqstream = bps_newstream(fpfreq,outprops.srate,&brkfreqSize);
if (freqstream == NULL)
{
printf("Error reading breakpoing values from file \"%s\".\n",
argv[ARG_FREQ]);
error++;
goto exit;
}
if (bps_getminmax(freqstream,&minval,&maxval))
{
printf("Error: unable to read breakpoint range "
"from file \"%s\".\n", argv[ARG_FREQ]);
error++;
goto exit;
}
if (minval < 0.0 || maxval < 0.0)
{
printf("Error: breakpoint frequency values out of range in file \"%s\"\n"
" freq >= 0.0\n", argv[ARG_FREQ]);
error++;
goto exit;
}
}
/* create an outfile buffer */
nframes = DEFAULT_NFRAMES;
buffer = (float *) malloc (sizeof(float) * nframes * outprops.chans);
if (buffer == NULL)
{
printf("No memory!\n");
error++;
goto exit;
}
/* calculate the total number of outfile frames */
outframes = (unsigned long) (dur * outprops.srate + 0.5);
/* calculate the number of buffers used in outfile */
nbufs = outframes / nframes;
remainder = outframes - nframes * nbufs;
if (remainder > 0)
nbufs++;
/* allocate space for new wavetype table oscillator
and initialize oscillator */
switch (wavetype)
{
case (WAVE_SINE):
gtable = new_sine(width);
if (gtable == NULL)
{
printf("Error: unable to create a sine wave table.\n");
error++;
goto exit;
}
p_osc = new_oscilt(outprops.srate,gtable,0);
break;
case (WAVE_SQUARE):
gtable = new_square(width,nharms);
if (gtable == NULL)
{
printf("Error: unable to create a square wave table.\n");
error++;
goto exit;
}
p_osc = new_oscilt(outprops.srate,gtable,0);
break;
case (WAVE_TRIANGLE):
gtable = new_triangle(width,nharms);
if (gtable == NULL)
{
printf("Error: unable to create a triangle wave table.\n");
error++;
goto exit;
}
p_osc = new_oscilt(outprops.srate,gtable,0.25);
break;
case (WAVE_SAWUP):
if (!strcmp(argv[ARG_TYPE],"pulse")) /* case (WAVE_PULSE): */
{
gtable = new_pulse(width,nharms);
if (gtable == NULL)
{
printf("Error: unable to create a pulse wave table.\n");
error++;
goto exit;
}
p_osc = new_oscilt(outprops.srate,gtable,0);
break;
}
case (WAVE_SAWDOWN):
if (wavetype==WAVE_SAWUP)
gtable = new_saw(width,nharms,SAW_UP);
else
gtable = new_saw(width,nharms,SAW_DOWN);
if (gtable == NULL)
{
printf("Error: unable to create a saw%s wave table.\n",
(wavetype==SAW_UP)?"up":"down");
error++;
goto exit;
}
p_osc = new_oscilt(outprops.srate,gtable,0);
break;
}
printf("Creating soundfile...\n");
/* process soundfile */
framesread = 0;
for (i=0; i < nbufs; i++)
{
/* update outfile copy status after the buffer
is refreshed every 100 times */
if(i%100)
{
printf("%lu frames copied... %d%%\r",
framesread, (int)(framesread*100/outframes));
}
/* clear update status when done */
if (i==(nbufs-1))
printf(" \n");
if ((i == (nbufs-1)) && remainder)
nframes = remainder;
for (j=0; j < nframes; j++)
{
if (ampstream)
amp = bps_tick(ampstream);
if (freqstream)
freq = bps_tick(freqstream);
val = tickfunc(p_osc,freq) * amp;
for (i_out=0; i_out < outprops.chans; i_out++)
buffer[j*outprops.chans + i_out] = val;
}
if (psf_sndWriteFloatFrames(ofd,buffer,nframes) != nframes)
{
printf("Error: unable to write frames to outfile.\n");
error++;
break;
}
framesread += nframes;
}
/* make sure peak amplitude roughly matches the
user requested amplitude */
if (ampstream)
peakdiff = maxamp-psf_sndPeakValue(ofd,&outprops);
else
peakdiff = amp-psf_sndPeakValue(ofd,&outprops);
if ((peakdiff>.001) || (peakdiff<-.001))
{
printf("ERROR: unable to generate the correct peak\n"
" amplitude for %s\n", argv[ARG_OUTFILE]);
error++;
}
printf("Done. %d error%s\n"
"soundfile created: %s\n"
"number of frames: %lu\n",
error, (error==1)?"":"s",
argv[ARG_OUTFILE], framesread);
/* display soundfile properties if successfully copied */
if (!error)
psf_sndInfileProperties(argv[ARG_OUTFILE],ofd,&outprops);
/* clean resources */
exit:
if (ofd >= 0)
{
if (psf_sndClose(ofd))
{
printf("Error: unable to close soundfile: %s\n",
argv[ARG_OUTFILE]);
}
else if (error)
{
printf("There was an error while processing the soundfile.\n"
"Deleting soundfile: %s\n", argv[ARG_OUTFILE]);
if (remove(argv[ARG_OUTFILE]))
printf("Error: unable to delete %s\n", argv[ARG_OUTFILE]);
else
printf("%s successfully deleted.\n", argv[ARG_OUTFILE]);
}
}
if (fpamp)
{
if (fclose(fpamp))
{
printf("Error: unable to close breakpoint file \"%s\"\n",
argv[ARG_AMP]);
}
}
if (fpfreq)
{
if (fclose(fpfreq))
{
printf("Error: unable to close breakpoint file \"%s\"\n",
argv[ARG_FREQ]);
}
}
if (buffer)
{
free(buffer);
buffer = NULL;
}
if (ampstream)
{
bps_freepoints(ampstream);
ampstream = NULL;
}
if (freqstream)
{
bps_freepoints(freqstream);
freqstream = NULL;
}
if (gtable)
gtable_free(>able);
if (p_osc)
{
free(p_osc);
p_osc = NULL;
}
psf_finish();
return error;
}
int main(int argc, char* argv[])
{
PSF_PROPS props;
long framesread;
long totalread;
/* init all dynamic resources to default states */
int ifd = -1,ofd = -1;
int i,error = 0;
double gain = 1.0;
PSF_CHPEAK* peaks = NULL;
psf_format outformat = PSF_FMT_UNKNOWN;
FILE* fin = NULL;
float* frame;
printf("TEXT2SF: convert text audio data to soundfile\n");
if(argc < ARG_NARGS) {
printf("insufficient arguments.\n"
"usage:\n\t"
"text2sf infile outfile srate chans gain\n");
return 1;
}
/* be good, and startup portsf */
if(psf_init()) {
printf("unable to start portsf\n");
return 1;
}
fin = fopen(argv[ARG_INFILE],"r");
/* we now have a resource, so we use goto hereafter on hitting any error */
/* tell user if source file is already floats */
if(fin==NULL) {
printf("cannot open infile %s\n",argv[ARG_INFILE]);
return 1;
}
props.chans = atoi(argv[ARG_CHANS]);
if(props.chans <=0) {
printf("chans must be positive!\n");
fclose(fin);
return 1;
}
props.srate = atoi(argv[ARG_SR]);
if(props.srate <=0) {
printf("srate must be positive!\n");
fclose(fin);
return 1;
}
gain = atof(argv[ARG_GAIN]);
if(gain <= 0.0) {
printf("gain value must be positive!\n");
fclose(fin);
return 1;
}
frame = malloc(props.chans * sizeof(float));
if(frame==NULL) {
puts("No memoery!\n");
fclose(fin);
return 1;
}
/* fixed output to 16bit file; one alternative would be PSF_SAM_IEEE_FLOAT for 32bit float format */
props.samptype = PSF_SAMP_16;
props.format = PSF_STDWAVE;
props.chformat = STDWAVE;
/* check file extension of outfile name, so we use correct output file format*/
outformat = psf_getFormatExt(argv[ARG_OUTFILE]);
if(outformat == PSF_FMT_UNKNOWN) {
printf("outfile name %s has unknown format.\n"
"Use any of .wav, .aiff, .aif, .afc, .aifc\n",argv[ARG_OUTFILE]);
error++;
goto exit;
}
props.format = outformat;
ofd = psf_sndCreate(argv[ARG_OUTFILE],&props,0,0,PSF_CREATE_RDWR);
if(ofd < 0) {
printf("Error: unable to create outfile %s\n",argv[ARG_OUTFILE]);
error++;
goto exit;
}
/* and allocate space for PEAK info */
peaks = (PSF_CHPEAK*) malloc(props.chans * sizeof(PSF_CHPEAK));
if(peaks == NULL) {
puts("No memory!\n");
error++;
goto exit;
}
printf("copying....\n");
/* single-frame loop to do copy: report any read/write errors */
framesread = readframe(fin,frame,props.chans);
totalread = 0; /* count sample frames as they are copied */
/* note: readframe retval of -1 signifies EOF */
while (framesread == 1) {
totalread++;
/* <--- do any processing here! ---------->*/
for(i=0; i < props.chans; i++)
frame[i] *= gain;
if(psf_sndWriteFloatFrames(ofd,frame,1) != 1) {
printf("Error writing to outfile\n");
error++;
break;
}
framesread = readframe(fin,frame,props.chans);
}
if(framesread == 0) {
printf("Error reading infile at line %ld. Outfile may be incomplete.\n",totalread);
error++;
}
else
printf("Done. %ld sample frames copied to %s\n",totalread,argv[ARG_OUTFILE]);
/* report PEAK values to user */
if(psf_sndReadPeaks(ofd,peaks,NULL) > 0) {
long i;
double peaktime;
printf("PEAK information:\n");
for(i=0; i < props.chans; i++) {
peaktime = (double) peaks[i].pos / (double) props.srate;
printf("CH %ld:\t%.4f at %.4f secs\n", i+1, peaks[i].val, peaktime);
}
}
/* do all cleanup */
exit:
if(fin != NULL)
fclose(fin);
if(ofd >= 0)
psf_sndClose(ofd);
if(frame)
free(frame);
if(peaks)
free(peaks);
psf_finish();
/* return error status to caller: may be useful in a script etc */
return error;
}
int main(int argc, char* argv[])
{
int i;
PSF_PROPS props;
long framesread;
long totalread;
/* init all dynamic resources to default states */
int ifd = -1,ofd = -1;
int error = 0;
PSF_CHPEAK* peaks = NULL;
float* frame = NULL;
psf_format outformat = PSF_FMT_UNKNOWN;
printf("SF2FLOAT: convert soundfile to 32bit floats format\n");
if(argc < 4){
printf("insufficient arguments.\n"
"usage:\n\t"
"sf2float option infile outfile\n");
return 1;
}
/* be good, and startup portsf */
if(psf_init()){
printf("unable to start portsf\n");
return 1;
}
ifd = psf_sndOpen(argv[2],&props,0);
if(ifd < 0 && atoi(argv[1])!=5){
printf("Error: unable to open infile %s\n",argv[2]);
return 1;
}
if(props.samptype == PSF_SAMP_16){
printf("Info: infile is in 16 bit format.\n");
}
if(props.samptype == PSF_SAMP_24){
printf("Info: infile is in 24 bit format.\n");
}
if(props.samptype == PSF_SAMP_32){
printf("Info: infile is in 32 bit format.\n");
}
/* we now have a resource, so we use goto hereafter on hitting any error */
/* tell user if source file is already floats */
if(props.samptype == PSF_SAMP_IEEE_FLOAT){
printf("Info: infile is already in floats format.\n");
}
props.samptype = PSF_SAMP_IEEE_FLOAT;
/* check file extension of outfile name, so we use correct output file format*/
// TODO: needs to be changed because output is not always the same format
if (atoi(argv[1])<3 || atoi(argv[1])==5) {
outformat = psf_getFormatExt(argv[3]);
printf("output file format: %d", outformat);
if(outformat == PSF_FMT_UNKNOWN){
printf("outfile name %s has unknown format.\n"
"Use any of .wav, .aiff, .aif, .afc, .aifc\n",argv[3]);
error++;
goto exit;
}
}
else if (atoi(argv[1])==4) {
outformat = psf_getFormatExt(argv[4]);
printf("output file format: %d", outformat);
if(outformat == PSF_FMT_UNKNOWN){
printf("outfile name %s has unknown format.\n"
"Use any of .wav, .aiff, .aif, .afc, .aifc\n",argv[4]);
error++;
goto exit;
}
}
props.format = outformat;
if(atoi(argv[1])<3 || atoi(argv[1])==5) {
props.srate = 44100;
props.chans = 2;
props.samptype = PSF_SAMP_IEEE_FLOAT;
props.format = PSF_STDWAVE;
props.chformat = STDWAVE;
ofd = psf_sndCreate(argv[3],&props,0,0,PSF_CREATE_RDWR);
if(ofd < 0){
printf("Error: unable to create outfile %s\n",argv[3]);
error++;
goto exit;
}
}
else if (atoi(argv[1])==4) {
ofd = psf_sndCreate(argv[4],&props,0,0,PSF_CREATE_RDWR);
if(ofd < 0){
printf("Error: unable to create outfile %s\n",argv[4]);
error++;
goto exit;
}
}
/* allocate space for one sample frame */
frame = (float*) malloc(props.chans * sizeof(float));
if(frame==NULL){
puts("No memory!\n");
error++;
goto exit;
}
/* and allocate space for PEAK info */
peaks = (PSF_CHPEAK*) malloc(props.chans * sizeof(PSF_CHPEAK));
if(peaks == NULL){
puts("No memory!\n");
error++;
goto exit;
}
// if(atoi(argv[1])!=5) {
//printf("copying....\n");
/* single-frame loop to do copy: report any read/write errors */
// framesread = psf_sndReadFloatFrames(ifd,frame,1);
// totalread = 0; /* count sample frames as they are copied */
// }
int part = atoi(argv[1]);
/*
* Switch depending on the part of the assignment
*/
switch(part) {
/*
* Part 0: Output the file as is.
*/
case 0:
while (framesread == 1){
totalread++;
if(psf_sndWriteFloatFrames(ofd,frame,1) != 1){
printf("Error writing to outfile\n");
error++;
break;
}
framesread = psf_sndReadFloatFrames(ifd,frame,1);
}
break;
/*
* Part 1: Divide the value of each sample by 2.
*/
case 1: {
while (framesread == 1){
frame[0] = frame[0]/2;
frame[1] = frame[1]/2;
totalread++;
if(psf_sndWriteFloatFrames(ofd,frame,1) != 1){
printf("Error writing to outfile\n");
error++;
break;
}
framesread = psf_sndReadFloatFrames(ifd,frame,1);
}
break;
}
/*
* Part 2: Pan the output from left to right, with an interval of 5 seconds.
*/
case 2: {
double cycle = 5; // cycle of 5 seconds
double period = 4 * cycle; // sine or cosine period
double sampleLimit = period * 44100;
while (framesread == 1){
frame[0] = frame[0]*sin(2*M_PI*totalread/sampleLimit);
frame[1] = frame[1]*cos(2*M_PI*totalread/sampleLimit);
totalread++;
if(psf_sndWriteFloatFrames(ofd,frame,1) != 1){
printf("Error writing to outfile\n");
error++;
break;
}
framesread = psf_sndReadFloatFrames(ifd,frame,1);
}
break;
}
/*
* Part 3: Create envelope file.
*/
case 3:
{
double max = 0; // to keep track of the max in the interval
int currentSample = 0;
double intervalTime = 0.05;
double sampleLimit = 44100*intervalTime;
int interval = 1;
FILE *file;
file = fopen(argv[3], "w+");
printf("sampleLimit %f\n", sampleLimit);
while (framesread == 1){
if (currentSample < sampleLimit) {
if (max < frame[0]) {
max = frame[0];
}
if (max < -1*frame[0]) {
max = -1*frame[0];
}
if (max < frame[1]) {
max = frame[1];
}
if (max < -1*frame[1]) {
max = -1*frame[1];
}
currentSample++;
}
else {
fprintf(file, "%f %f\n", (double)(interval*intervalTime), max);
max = 0;
currentSample = 0;
interval++;
}
totalread++;
framesread = psf_sndReadFloatFrames(ifd,frame,1);
}
fclose(file);
break;
}
/*
* apply envelope on file
*/
case 4:
{
// open up file, put the reading index on the first line
FILE *file;
file = fopen(argv[3], "r");
double intervalTime = 0.05;
char intervalLimitString[20], valueString[20], space[1];
double intervalLimit=-1, value=0;
// to do the linear regression and get the factor
double prevValue = 0;
double slope = 0;
double intercept = 0;
double factor = 1;
double current=0;
while (framesread == 1) {
if (!feof(file)) {
if(current/44100 >= intervalLimit ) {
if(fgets(intervalLimitString, 10, file) != NULL) {
intervalLimit = strtod(intervalLimitString, NULL);
}
if(fgets(space, 1, file) != NULL) {}
if(fgets(valueString, 12, file) != NULL) {
prevValue = value;
value = strtod(valueString, NULL);
slope = (value-prevValue)/intervalTime;
intercept = prevValue;
}
}
factor = ((double)(totalread%((int)(44100*intervalTime)))/44100)*slope + intercept;
frame[0] = frame[0]*factor;
frame[1] = frame[1]*factor;
int tt = totalread%2205;
// printf("time: %d \t value: %f \t slope %f \t intercep %f \t will multiply by: %f\n", tt, value, slope, intercept, factor);
}
current++;
totalread++;
if(psf_sndWriteFloatFrames(ofd,frame,1) != 1){
printf("Error writing to outfile\n");
error++;
break;
}
framesread = psf_sndReadFloatFrames(ifd,frame,1);
}
break;
}
/*
* add up sine waves
*/
case 5: {
FILE *file;
file = fopen(argv[2], "r");
char sineAmplitudeString[20], sineFrequencyString[20], space[1];
double sineAmplitude, sineFrequency;
double sineAmplitudes[20], sineFrequencies[20];
int currentIndex = 0;
int arraySize=0;
while (!feof(file)) {
if(fgets(sineFrequencyString, 5, file) != NULL) {
sineFrequency = strtod(sineFrequencyString, NULL);
if(sineFrequency==-1)
break;
else {
sineFrequencies[currentIndex] = sineFrequency;
if(fgets(space, 1, file) != NULL) {}
if(fgets(sineAmplitudeString, 20, file) != NULL) {
sineAmplitude = strtod(sineAmplitudeString, NULL);
sineAmplitudes[currentIndex] = sineAmplitude;
currentIndex++;
}
}
}
}
arraySize = currentIndex;
currentIndex = 0;
int i;
for(i=0; i<arraySize; i++) {
printf(" %f %f \n", sineAmplitudes[i], sineFrequencies[i]);
}
// do i assume it is 0.05?
double intervalTime = 0.05;
char intervalLimitString[20], valueString[20];
double intervalLimit=-1, value=0;
// to do the linear regression and get the factor
double prevValue = 0;
double slope = 0;
double intercept = 0;
double factor = 1;
double current=0;
while(!feof(file)){
if(current/44100 >= intervalLimit ) {
if(fgets(intervalLimitString, 10, file) != NULL) {
intervalLimit = strtod(intervalLimitString, NULL);
}
if(fgets(space, 1, file) != NULL) {}
if(fgets(valueString, 12, file) != NULL) {
prevValue = value;
value = strtod(valueString, NULL);
slope = (value-prevValue)/intervalTime;
intercept = prevValue;
}
}
factor = ((double)((int)current%((int)(44100*intervalTime)))/44100)*slope + intercept;
printf("%f\n", factor);
// compute frame[1] and frame[2]
frame[0] = 0;
int i;
for(i=0; i<arraySize; i++) {
frame[0] += sineAmplitudes[i]*sin(2*M_PI*current*sineFrequencies[i]/44100);
}
frame[0] = frame[0]*factor;
frame[1] = frame[0];
if(psf_sndWriteFloatFrames(ofd,frame,1) != 1){
printf("Error writing to outfile\n");
error++;
break;
}
current++;
}
break;
}
default:
printf("default case");
break;
}
if(framesread < 0) {
printf("Error reading infile. Outfile is incomplete.\n");
error++;
}
else {
if (atoi(argv[1])<3) {
printf("Done. %ld sample frames copied to %s\n",totalread,argv[3]);
}
else if (atoi(argv[1])==4) {
printf("Done. %ld sample frames copied to %s\n",totalread,argv[4]);
}
}
/* report PEAK values to user */
if(psf_sndReadPeaks(ofd,peaks,NULL) > 0){
long i;
double peaktime;
printf("PEAK information:\n");
for(i=0;i < props.chans;i++){
peaktime = (double) peaks[i].pos / (double) props.srate;
printf("CH %ld:\t%.4f at %.4f secs\n", i+1, peaks[i].val, peaktime);
}
}
/* do all cleanup */
exit: if(ifd >= 0)
psf_sndClose(ifd);
if(ofd >= 0)
psf_sndClose(ofd);
if(frame)
free(frame);
if(peaks)
free(peaks);
psf_finish();
return error;
}
int main (int argc, char**argv)
{
PSF_PROPS outprops;
unsigned long srate;
double amp, freq, pwval, dur, peakdiff;
unsigned long nbufs, outframes, remainder, nframes;
psf_format outformat = PSF_FMT_UNKNOWN;
int wavetype=-1;
float wavevalue;
int nchans;
int ispwval=0; /* flagged if pwval is a value and not a breakpoint file */
char* arg_pwmod; /* retains the name of the pwval breakpoint file */
double minval, maxval; /* used for breakpoint amplitude values */
tickfunc tick; /* point to the specified wavetype function */
char option; /* stores command line options */
psf_stype samptype = PSF_SAMP_16; /* outfile is set to 16-bit by default */
double phase=0.0; /* fraction between 0 and 1 which sets the phase offset
default values match the direction of the sine wave
(i.e starting at zero, going positive) */
/* init resource values */
int ofd=-1;
int error=0;
float* outbuf = NULL; /* buffer for outfile */
OSCIL* p_osc = NULL; /* waveform oscillator */
BRKSTREAM* ampstream = NULL; /* breakpoint stream of amplitude values */
BRKSTREAM* freqstream = NULL; /* breakpoint stream of frequency values */
BRKSTREAM* pwmodstream = NULL; /* breakpoint stream of pwmod values */
FILE* fpamp = NULL; /* amplitude breakpoint file */
FILE* fpfreq = NULL; /* frequency breakpoint file */
FILE* fppwmod = NULL; /* pulse width modulation breakpoint file */
unsigned long brkampSize = 0; /* number of amplitude breakpoints */
unsigned long brkfreqSize = 0; /* number of frequency breakpoints */
unsigned long brkpwmodSize = 0; /* number of pulse wave mod breakpoints */
printf("SIGGEN: generate a simple waveform\n");
/* check for command-line options */
if (argc>1)
{
while (argv[1][0] == '-')
{
option = argv[1][1];
switch (option)
{
case('\0'):
printf("ERROR: you did not specify an option\n"
"options: -sN select the format of the output sound file\n"
" N = 16 (16-bit), 24 (24-bit), or 32 (32-bit)\n"
);
return 1;
case('s'):
if (argv[1][2]=='\0')
{
printf("ERROR: you did not specify a format\n"
"formats: 16 (16-bit), 24 (24-bit), or 32 (32-bit)\n",
&argv[1][2]);
return 1;
}
samptype = atoi(&argv[1][2]);
if (samptype == 16)
{
samptype = PSF_SAMP_16;
break;
}
if (samptype == 24)
{
samptype = PSF_SAMP_24;
break;
}
if (samptype == 32)
{
samptype = PSF_SAMP_32;
break;
}
printf("ERROR: %s is not a valid format\n"
"formats: 16 (16-bit), 24 (24-bit), or 32 (32-bit)\n",
&argv[1][2]);
return 1;
case('o'):
if (argv[1][2]=='\0')
{
printf("ERROR: you did not specify an offset\n"
"USAGE: -oN (0 <= N <= 1)\n"
);
return 1;
}
if (!(argv[1][2] >= 'a' && argv[1][2]<='z'))
{
phase = atof(&argv[1][2]);
if (phase < 0.0)
phase = 0.0;
if (phase > 1.0)
phase = 1.0;
break;
}
default:
printf("ERROR: %s is not a valid option\n"
"options: -sN select the format of the output sound file\n"
" N = 16 (16-bit), 24 (24-bit), or 32 (32-bit)\n"
" -oN select the offset of the oscillator\n"
" 0 <= N <= 1\n",
argv[1]);
return 1;
}
argc--;
argv++;
}
}
if (argc!=ARG_NARGS)
if (argc==(ARG_NARGS+1))
{
/* check if pwval is specified */
fppwmod = fopen(argv[ARG_PWMOD], "r");
if (fppwmod==NULL)
{
if (argv[ARG_PWMOD][0] >='a' && argv[ARG_PWMOD][0] <= 'z')
{
printf("Error: breakpoint file \"%s\" does not exist.\n",
argv[ARG_PWMOD]);
return 1;
}
pwval = atof(argv[ARG_PWMOD]);
if (pwval < 1 || pwval > 99)
{
printf("Error: pwval is out of range.\n"
" 1 <= pwval <= 99\n");
return 1;
}
/* we have gathered a pwval value */
ispwval=1;
}
else
{
/* breakpoint file exists, gather breakpoint values */
pwmodstream = bps_newstream(fppwmod,atof(argv[ARG_SRATE+1]),&brkpwmodSize);
if (pwmodstream==NULL)
{
printf("ERROR: unable to obtain breakpoints from \"%s\"\n",
argv[ARG_PWMOD]);
error++;
goto exit;
}
}
/* make sure enum ARG values are aligned with command-line arguments */
int argnum = ARG_PWMOD;
arg_pwmod = argv[ARG_PWMOD];
while (argnum != (ARG_NARGS+1))
argv[argnum] = argv[++argnum];
}
else
{
printf("ERROR: insufficient number of arguments.\n"
"USAGE: siggen [-sN] [-oN] outsndfile wavetype [pwval] duration srate nchans amp freq\n"
" -sN: select the format of the output sound file (16-bit by default)\n"
" N = 16 (16-bit), 24 (24-bit), or 32 (32-bit)\n"
" -oN: select the offset of the oscillator\n"
" 0 <= N <= 1\n"
" if you set N < 0, then N is set to 0\n"
" if you set N > 1, then N is set to 1\n"
" wavetype: sine, triangle, square, pwmod, sawtooth_up, sawtooth_down\n"
" pwval: pulse wave percentage value or breakpoint file\n"
" modulation range is from 1%% to 99%%\n"
" a normal square wave is 50%%\n"
" pwval must be selected only when the\n"
" pwmod wavetype has been selected.\n"
" duration: duration of outfile (seconds)\n"
" srate: required sample rate of outfile\n"
" amp: amplitude value or breakpoint file\n"
" (0 < amp <= 1.0)\n"
" freq: frequency value or breakpoint file\n"
" (freq > 0 )\n"
);
return 1;
}
/** at this point we may have gathered resources
we henceforth use goto upon hitting any errors **/
/* define outfile format */
srate = atof(argv[ARG_SRATE]);
if (srate<=0)
{
printf("ERROR: sample rate must be positive.\n");
error++;
goto exit;
}
outprops.srate = srate;
outprops.samptype = samptype;
outprops.chformat = PSF_STDWAVE;
/* get outfile extension */
outformat = psf_getFormatExt(argv[ARG_OUTFILE]);
if (outformat==PSF_FMT_UNKNOWN)
{
printf("Outfile name \"%s\" has unknown format.\n"
"Use any of .wav .aiff .aif .afc .aifc\n",
argv[ARG_OUTFILE]
);
error++;
goto exit;
}
outprops.format = outformat;
/* get number of channels */
nchans = atoi(argv[ARG_NCHANS]);
if (nchans > MC_WAVE_EX)
{
printf("ERROR: portsf does not support %d channels\n",
nchans);
error++;
goto exit;
}
outprops.chans = nchans;
/* get the wavetype */
int count = 0;
while (argv[ARG_TYPE][count]!='\0') count++;
switch (count)
{
case(WAVE_SINE):
if (!strcmp(argv[ARG_TYPE],"sine"))
wavetype = WAVE_SINE;
break;
case(WAVE_PWMOD):
if (!strcmp(argv[ARG_TYPE],"pwmod"))
wavetype = WAVE_PWMOD;
break;
case(WAVE_SQUARE):
if (!strcmp(argv[ARG_TYPE],"square"))
wavetype = WAVE_SQUARE;
break;
case(WAVE_TRIANGLE):
if (!strcmp(argv[ARG_TYPE],"triangle"))
wavetype = WAVE_TRIANGLE;
break;
case(WAVE_SAWUP):
if (!strcmp(argv[ARG_TYPE],"sawtooth_up"))
wavetype = WAVE_SAWUP;
break;
case(WAVE_SAWDOWN):
if (!strcmp(argv[ARG_TYPE],"sawtooth_down"))
wavetype = WAVE_SAWDOWN;
break;
default:
wavetype = -1;
}
if (wavetype<0)
{
printf("ERROR: you have chosen an unknown wavetype.\n"
"wavetypes: sine, square, pwmod, triangle, sawtooth_up, sawtooth_down\n"
);
error++;
goto exit;
}
/* if user specifies pwval, make sure pwmod wavetype is selected */
if (pwmodstream||ispwval)
if (wavetype!=WAVE_PWMOD)
{
printf("ERROR: if you select a value or breakpoint file for pwval,\n"
" you must select the pwmod wavetype.\n");
error++;
goto exit;
}
/* select waveform function */
switch (wavetype)
{
case(WAVE_SINE):
tick = sinetick;
phase += 0.0;
break;
case(WAVE_TRIANGLE):
tick = tritick;
phase += 0.75;
break;
case(WAVE_SQUARE):
tick = sqtick;
phase += 0.0;
break;
case(WAVE_PWMOD):
if (pwmodstream==NULL && !ispwval)
{
printf("ERROR: you didn't specify a pulse wave value "
"or breakpoint file.\n");
error++;
goto exit;
}
phase += 0.0;
break;
case(WAVE_SAWUP):
tick = sawutick;
phase += 0.5;
break;
case(WAVE_SAWDOWN):
tick = sawdtick;
phase += 0.5;
}
/* get the time duration of the soundfile */
dur = atof(argv[ARG_DUR]);
if (dur<=0.0)
{
printf("ERROR: time duration must be positive.\n");
error++;
goto exit;
}
/* open breakpoint file, or set constant amplitude */
fpamp = fopen(argv[ARG_AMP],"r");
if (fpamp==NULL)
{
if (argv[ARG_AMP][0] >= 'a' && argv[ARG_AMP][0] <= 'z')
{
printf("ERROR: breakpoint file \"%s\" does not exist.\n",
argv[ARG_AMP]);
error++;
goto exit;
}
amp = atof(argv[ARG_AMP]);
if (amp<=0.0 || amp>1.0)
{
printf("ERROR: amplitude value out of range.\n"
" 0.0 < amp <= 1.0\n"
);
error++;
goto exit;
}
}
else
{
ampstream = bps_newstream(fpamp,outprops.srate,&brkampSize);
if (ampstream==NULL)
{
printf("ERROR: unable to obtain breakpoints from \"%s\"\n",
argv[ARG_AMP]);
error++;
goto exit;
}
if (bps_getminmax(ampstream,&minval,&maxval))
{
printf("Error reading range of breakpoint file \"%s\"\n",
argv[ARG_AMP]);
error++;
goto exit;
}
if (minval < 0.0 || minval > 1.0 || maxval < 0.0 || maxval > 1.0)
{
printf("Error: amplitude values out of range in file \"%s\"\n"
" 0.0 < amp <= 1.0\n",
argv[ARG_AMP]);
error++;
goto exit;
}
}
/* open breakpoint file, or set constant frequency */
fpfreq = fopen(argv[ARG_FREQ],"r");
if (fpfreq==NULL)
{
if (argv[ARG_FREQ][0] >= 'a' && argv[ARG_FREQ][0] <='z')
{
printf("ERROR: breakpoint file \"%s\" does not exist.\n",
argv[ARG_FREQ]);
error++;
goto exit;
}
freq = atof(argv[ARG_FREQ]);
if (freq<=0.0)
{
printf("ERROR: frequency must be positive.\n");
error++;
goto exit;
}
}
else
{
freqstream = bps_newstream(fpfreq,outprops.srate,&brkfreqSize);
if (freqstream==NULL)
{
printf("ERROR: unable to obtain breakpoint from \"%s\"\n",
argv[ARG_FREQ]);
error++;
goto exit;
}
}
/* start portsf */
psf_init();
ofd = psf_sndCreate(argv[ARG_OUTFILE],&outprops,0,0,PSF_CREATE_RDWR);
if (ofd<0)
{
printf("ERROR: unable to create outfile: %s\n",argv[ARG_OUTFILE]);
error++;
goto exit;
}
/* initialize waveform oscillator */
p_osc = new_oscilp(outprops.srate, phase);
/* calculate the number of frames for the soundfile */
outframes = (unsigned long) (dur * outprops.srate + 0.5);
/* allocate a buffer for outfile */
nframes = NFRAMES;
outbuf = (float*)malloc(sizeof(float)*nframes*outprops.chans);
/* calculate the number of buffers */
nbufs = outframes/nframes;
remainder = outframes - nbufs*nframes;
if (remainder > 0)
nbufs++;
printf("Creating soundfile...\n");
/* process soundfile */
long i,j,i_out;
for (i=0; i < nbufs; i++)
{
if ((i == (nbufs-1)) && remainder)
nframes = remainder;
for (j=0; j < nframes; j++)
{
if (ampstream)
amp = bps_tick(ampstream);
if (freqstream)
freq = bps_tick(freqstream);
if (pwmodstream)
pwval = bps_tick(pwmodstream);
if (pwmodstream || ispwval )
wavevalue = (float)(amp * pwmtick(p_osc,freq,pwval));
else
wavevalue = (float)(amp * tick(p_osc,freq));
for (i_out=0; i_out < outprops.chans; i_out++)
outbuf[j*outprops.chans+i_out] = wavevalue;
}
if (psf_sndWriteFloatFrames(ofd,outbuf,nframes)!=nframes)
{
printf("Error writing to outfile\n");
error++;
break;
}
}
/* make sure peak amplitude roughly matches the
user requested amplitude */
if (ampstream==NULL)
peakdiff = amp-psf_sndPeakValue(ofd,&outprops);
else
peakdiff = maxval-psf_sndPeakValue(ofd,&outprops);
if ((peakdiff>.001) || (peakdiff<-.001))
{
printf("ERROR: unable to generate the correct peak\n"
" amplitude for %s\n", argv[ARG_OUTFILE]);
error++;
}
printf("Done.\t%d error%s\n"
"Outfile created: %s\n",
error, (error==1)?"":"s", argv[ARG_OUTFILE]);
/* display outfile properties */
psf_sndInfileProperties(argv[ARG_OUTFILE],ofd,&outprops);
/* cleanup resources */
exit:
if (ofd>=0)
if (psf_sndClose(ofd))
printf("Error: unable to close outfile: %s\n",argv[ARG_OUTFILE]);
else if (error)
{
printf("There was an error while processing the outfile.\n"
"Deleting outfile: %s ...\n", argv[ARG_OUTFILE]);
if (remove(argv[ARG_OUTFILE]))
printf("Error: failed to delete %s\n", argv[ARG_OUTFILE]);
else
printf("%s successfully deleted.\n", argv[ARG_OUTFILE]);
}
if (outbuf)
{
free(outbuf);
outbuf=NULL;
}
if (p_osc)
{
free(p_osc);
p_osc=NULL;
}
if (ampstream)
bps_freepoints(ampstream);
if (freqstream)
bps_freepoints(freqstream);
if (pwmodstream)
bps_freepoints(pwmodstream);
if (fpamp)
if (fclose(fpamp))
{
printf("Error closing breakpoint file \"%s\"\n",
argv[ARG_AMP]);
}
if (fpfreq)
if (fclose(fpfreq))
{
printf("Error closing breakpoint file \"%s\"\n",
argv[ARG_FREQ]);
}
if (fppwmod)
if (fclose(fppwmod))
{
printf("Error closing breakpoint file \"%s\"\n",
arg_pwmod);
}
psf_finish();
return error;
}
int main(int argc, char**argv)
{
PSF_PROPS props;
long framesread, totalread;
DWORD nFrames;
int size;
int limit;
int N; // copy infile N times
/* init all resource vals to default states */
int ifd=-1, ofd=-1;
int error=0;
psf_format outformat = PSF_FMT_UNKNOWN;
PSF_CHPEAK* peaks = NULL;
float* buffer = NULL;
printf ("SF2FLOAT: convert soundfile to floats format.\n");
if (argc!=ARG_NARGS)
{
printf("insufficient arguments.\n"
"USAGE:\tsf2float infile outfile buffer limit N\n");
return 1;
}
/* startup portsf */
if(psf_init())
{
printf("ERROR: unable to start portsf\n");
return 1;
}
/* initialize buffer */
nFrames = (DWORD)atoi(argv[ARG_BUFF]);
if (nFrames < 1)
{
printf("ERROR: buffer size must be at least 1\n");
return 1;
}
/* initialize limit */
limit = atoi(argv[ARG_LIMIT]);
if (limit<1)
{
printf("ERROR: size limit must be positive.\n");
return 1;
}
/* initialize N */
N = atoi(argv[ARG_N]);
if (N<1)
{
printf("ERROR: N must be at least one.\n");
return 1;
}
/* open infile */
ifd = psf_sndOpen(argv[ARG_INFILE], &props, 0);
if (ifd<0)
{
printf("ERROR: unable to open infile \"%s\"\n",argv[ARG_INFILE]);
return 1;
}
/* we now have a resource, so we use goto hereafter
on hitting any error */
/* get number of frames from infile */
size = psf_sndSize(ifd);
if(size<0)
{
printf("ERROR: unable to obtain the size of \"%s\"\n",argv[ARG_INFILE]);
error++;
goto exit;
}
/* check if copy limit is less than size */
if(size<limit)
{
printf("ERROR: infile size is less than the copy limit.\n"
"infile:\t%s\n"
"infile size:\t%d frames\n"
"copy limit:\t%d frames\n",
argv[ARG_INFILE], size, limit);
error++;
goto exit;
}
/* tell user if source file is already floats */
if (props.samptype==PSF_SAMP_IEEE_FLOAT)
printf("Info: infile is already in floats format.\n");
/* check if infile uses 8-bit samples*/
if (props.samptype==PSF_SAMP_8)
{
printf("ERROR: sf2float does not support 8-bit format.\n");
error++;
goto exit;
}
if(!psf_sndInfileProperties(argv[ARG_INFILE],ifd,&props))
{
error++;
goto exit;
}
props.samptype=PSF_SAMP_IEEE_FLOAT;
/* check if outfile extension is one we know about */
outformat = psf_getFormatExt(argv[ARG_OUTFILE]);
if (outformat == PSF_FMT_UNKNOWN)
{
printf("Outfile name \"%s\" has unknown format.\n"
"Use any of .wav .aiff .aif .afc .aifc\n",
argv[ARG_OUTFILE]);
error++;
goto exit;
}
props.format = outformat;
/* create outfile */
ofd = psf_sndCreate(argv[ARG_OUTFILE], &props, 0, 0, PSF_CREATE_RDWR);
if (ofd<0)
{
printf("ERROR: unable to create outfile \"%s\"\n",argv[ARG_OUTFILE]);
error++;
goto exit;
}
/* allocate space for sample frames */
if (limit<nFrames)
nFrames = (DWORD)limit;
buffer= (float*)malloc(props.chans*sizeof(float)*nFrames);
if (buffer==NULL)
{
puts("No memory!\n");
error++;
goto exit;
}
/* and allocate space for PEAK info */
peaks = (PSF_CHPEAK*)malloc(props.chans*sizeof(PSF_CHPEAK));
if (peaks==NULL)
{
puts("No memory!\n");
error++;
goto exit;
}
printf("copying...\n");
int i=0;
int j;
/* copy the infile N times */
for (j=0; j<N; j++)
{
/* make sure to set nFrames to the correct value
every time you pass through the for loop */
if (limit < atoi(argv[ARG_BUFF]))
nFrames = (DWORD)limit;
else
nFrames = (DWORD)atoi(argv[ARG_BUFF]);
totalread = 0; /* running count of sample frames */
if(psf_sndSeek(ifd,0,PSF_SEEK_SET))
{
printf("ERROR: cannot reset infile\n");
error++;
goto exit;
}
/* nFrames loop to do copy, report any errors */
framesread = psf_sndReadFloatFrames(ifd,buffer,nFrames);
while (framesread>0&&totalread<limit)
{
i++;
/* update copy status after refreshing the buffer every 100 times */
if (i%100==0)
printf("%ld samples copied... %ld%%\r",totalread,100*totalread/size);
totalread+=framesread;
if(psf_sndWriteFloatFrames(ofd,buffer,nFrames)<0)
{
printf("Error writing to outfile.\n");
error++;
break;
}
/* make sure not to copy frames past the limit */
if (nFrames+totalread > limit)
nFrames = (DWORD)(limit-totalread);
framesread = psf_sndReadFloatFrames(ifd,buffer,nFrames);
}
}
totalread *= N; /* total number of frames copied */
if(framesread<0)
{
printf("Error reading infile. Outfile is incomplete.\n");
error++;
}
else
printf("Done. %ld sample frames copied to %s\n",
totalread, argv[ARG_OUTFILE]);
/* report PEAKS to user */
if (psf_sndReadPeaks(ofd,peaks,NULL)>0)
{
long i;
double peaktime;
double peakDB;
printf("Peak information:\n");
for (i=0; i<props.chans; i++)
{
peaktime = (double)peaks[i].pos/props.srate;
if (peaks[i].val == 0.0)
peaks[i].val = 1.0e-4;
peakDB = log10(peaks[i].val);
printf("CH %ld:\t%.4f\t(%.4f dB) at %.4f secs\n",
i+1, peaks[i].val, peakDB, peaktime);
}
}
/* do all the cleanup */
exit:
if (ifd>=0)
psf_sndClose(ifd);
if (ofd>=0)
psf_sndClose(ofd);
if (buffer)
free(buffer);
if (peaks)
free(peaks);
psf_finish();
return error;
}
int main(int argc, char**argv)
{
PSF_PROPS props;
long framesread, totalread;
DWORD nFrames;
int size;
int limit;
int N; // copy infile N times
float ampfac;
float dbval;
/* init all resource vals to default states */
int ifd=-1, ofd=-1;
int error=0;
psf_format outformat = PSF_FMT_UNKNOWN;
PSF_CHPEAK* peaks = NULL;
float* buffer = NULL;
/* init flags for command-line options */
int isamp=0; // default scale factor is in dBs
printf ("SFGAIN: change level of soundfile.\n");
if ((argc<ARG_NOPS)||(argc>ARG_OPS))
{
printf("insufficient arguments.\n"
"USAGE:\tsfgain infile outfile buffer limit N [dBval | -a ampfac]\n"
"dBval must be <= 0 or ampfac must be > 0\n");
return 1;
}
/* check for command-line options */
if (argc==ARG_OPS)
{
if (argv[ARG_OP][0]=='-')
{
if (argv[ARG_OP][1]=='a')
isamp=1;
else
{
printf("ERROR: %s is not a valid command-line option.\n"
"USAGE:\tsfgain infile outfile buffer limit N [dBval | -a ampfac]\n"
"dBval must be <= 0 or ampfac must be > 0\n", argv[ARG_OP]);
return 1;
}
}
}
/* startup portsf */
if(psf_init())
{
printf("ERROR: unable to start portsf\n");
return 1;
}
/* initialize buffer */
nFrames = (DWORD)atoi(argv[ARG_BUFF]);
if (nFrames < 1)
{
printf("ERROR: buffer size must be at least 1\n");
return 1;
}
/* initialize limit */
limit = atoi(argv[ARG_LIMIT]);
if (limit<1)
{
printf("ERROR: size limit must be positive.\n");
return 1;
}
/* initialize N */
N = atoi(argv[ARG_N]);
if (N<1)
{
printf("ERROR: N must be at least one.\n");
return 1;
}
/* initialize dBval or ampfac */
if (isamp)
{
ampfac = atof(argv[ARG_AMP]);
if (ampfac <= 0.0)
{
printf("ERROR: ampfac must be positive.\n");
return 1;
}
if (ampfac == 1.0)
{
printf("ERROR: an ampfac of 1 creates an outfile "
" identicle to the infile\n");
return 1;
}
}
else
{
dbval = atof(argv[ARG_DB]);
if (dbval > 0.0)
{
printf("ERROR: dBval cannot be positive.\n");
return 1;
}
if (dbval==0.0)
{
printf("ERROR: dBval of 0 creates an outfile "
"identicle to the infile\n");
return 1;
}
/* convert dB to amps */
ampfac = pow(10.0, dbval/20.0);
}
/* open infile */
ifd = psf_sndOpen(argv[ARG_INFILE], &props, 0);
if (ifd<0)
{
printf("ERROR: unable to open infile \"%s\"\n",argv[ARG_INFILE]);
return 1;
}
/* we now have a resource, so we use goto hereafter
on hitting any error */
/* get number of frames from infile */
size = psf_sndSize(ifd);
if(size<0)
{
printf("ERROR: unable to obtain the size of \"%s\"\n",argv[ARG_INFILE]);
error++;
goto exit;
}
/* check if copy limit is less than size */
if(size<limit)
{
printf("ERROR: infile size is less than the copy limit.\n"
"infile:\t%s\n"
"infile size:\t%d frames\n"
"copy limit:\t%d frames\n",
argv[ARG_INFILE], size, limit);
error++;
goto exit;
}
/* check if infile uses 8-bit samples*/
if (props.samptype==PSF_SAMP_8)
{
printf("ERROR: sfgain does not support 8-bit format.\n");
error++;
goto exit;
}
/* display infile properties */
if(!psf_sndInfileProperties(argv[ARG_INFILE],ifd,&props))
{
error++;
goto exit;
}
/* check if outfile extension is one we know about */
outformat = psf_getFormatExt(argv[ARG_OUTFILE]);
if (outformat == PSF_FMT_UNKNOWN)
{
printf("Outfile name \"%s\" has unknown format.\n"
"Use any of .wav .aiff .aif .afc .aifc\n",
argv[ARG_OUTFILE]);
error++;
goto exit;
}
props.format = outformat;
/* create outfile */
ofd = psf_sndCreate(argv[ARG_OUTFILE], &props, 0, 0, PSF_CREATE_RDWR);
if (ofd<0)
{
printf("ERROR: unable to create outfile \"%s\"\n",argv[ARG_OUTFILE]);
error++;
goto exit;
}
/* allocate space for sample frames */
if (limit<nFrames)
nFrames = (DWORD)limit;
buffer= (float*)malloc(props.chans*sizeof(float)*nFrames);
if (buffer==NULL)
{
puts("No memory!\n");
error++;
goto exit;
}
/* and allocate space for PEAK info */
peaks = (PSF_CHPEAK*)malloc(props.chans*sizeof(PSF_CHPEAK));
if (peaks==NULL)
{
puts("No memory!\n");
error++;
goto exit;
}
printf("copying...\n");
int update=0;
int loop;
int i;
int j;
/* copy the infile N times */
for (loop=0; loop<N; loop++)
{
/* make sure to set nFrames to the correct value
every time you pass through the for loop */
if (limit < atoi(argv[ARG_BUFF]))
nFrames = (DWORD)limit;
else
nFrames = (DWORD)atoi(argv[ARG_BUFF]);
totalread = 0; /* running count of sample frames */
if(psf_sndSeek(ifd,0,PSF_SEEK_SET))
{
printf("ERROR: cannot reset infile\n");
error++;
goto exit;
}
/* nFrames loop to do copy, report any errors */
framesread = psf_sndReadFloatFrames(ifd,buffer,nFrames);
while (framesread>0&&totalread<limit)
{
update++;
/* update copy status after refreshing the buffer every 100 times */
if (update%100==0)
printf("%ld samples copied... %ld%%\r",totalread,100*totalread/size);
totalread+=framesread;
/* change sample values by amp factor */
for (j=0; j<nFrames; j++)
for (i=0; i<props.chans; i++)
buffer[props.chans*j+i] *= ampfac;
if(psf_sndWriteFloatFrames(ofd,buffer,nFrames)<0)
{
printf("Error writing to outfile.\n");
error++;
break;
}
/* make sure not to copy frames past the limit */
if (nFrames+totalread > limit)
nFrames = (DWORD)(limit-totalread);
framesread = psf_sndReadFloatFrames(ifd,buffer,nFrames);
}
}
totalread *= N; /* total number of frames copied */
if(framesread<0)
{
printf("Error reading infile. Outfile is incomplete.\n");
error++;
}
else
printf("Done. %ld sample frames copied to %s\n",
totalread, argv[ARG_OUTFILE]);
/* report PEAKS to user */
if (psf_sndReadPeaks(ofd,peaks,NULL)>0)
{
long i;
double peaktime;
double peakDB;
printf("Peak information:\n");
for (i=0; i<props.chans; i++)
{
peaktime = (double)peaks[i].pos/props.srate;
if (peaks[i].val == 0.0)
peaks[i].val = 1.0e-4;
peakDB = log10(peaks[i].val);
printf("CH %ld:\t%.4f\t(%.4f dB) at %.4f secs\n",
i+1, peaks[i].val, peakDB, peaktime);
}
}
/* do all the cleanup */
exit:
if (ifd>=0)
psf_sndClose(ifd);
if (ofd>=0)
psf_sndClose(ofd);
if (buffer)
free(buffer);
if (peaks)
free(peaks);
psf_finish();
return error;
}
void osc_gen(int argc, char *argv[])
{
//This function serves as an Osccilator bank (an arrary of oscillators) for additive synthesis
//It produces more natural sounding waves confined in the spectrum of the availabke ranges of the sampling rate at or above the Nyquist limit
//Structurally, this program is very similar to sig_gen, except that we will only be calling upon sine_wave_node and implement additive synthesis
//to achieve the other waveforms. If osc_gen_num_oscs == 1 (meaning only 1 oscillator) a normal sine wave will be produced.
//This function makes use of wave_generator.c/.h objects and functions
/***************USAGE***************
oscgen outfile dur srate num_chans, amp, freq, wavetype, num_oscs
**********************************/
if(argc < OSC_GEN_NARGS)
{
fprintf(stderr, "insufficient arguments.\n"
"usage: oscgen outfile dur srate num_chans amp freq wavetype num_oscs\n"
"where wavetype =:\n"
" 0 = square\n"
" 1 = triangle\n"
" 2 = sawtooth up\n"
" 3 = sawtooth down\n"
" 4 = pulse\n"
"dur = duration of outfile (seconds)\n"
"srate = required sample rate of outfile\n"
"amp = amplitude value or breakpoint file (0 < amp <= 1.0)\n"
"freq = frequency value (freq > 0) or breakpoint file.\n"
"num_oscs = number of oscillators (where 1 is normal sine wave)\n"
);
exit(1);
}
/********* initialize all dynamic resources to default states **********/
PSF_PROPS outprops;
int ofd = -1;
int error = 0;
PSF_CHPEAK* peaks = NULL;
psf_format outformat = PSF_FMT_UNKNOWN;
long nframes = NFRAMES;
float* outframe = NULL;
double amp,freq,dur;
long outframes,nbufs = 0,num_oscs,i; //num_oscs holds number of oscillators for additive synthesis
long remainder;
int samptype = PSF_SAMP_16;
OSCIL** oscs = NULL; //an array of oscil pointers (because additive synthesis requires more than one oscillators)
double* oscamps = NULL; //for oscillator bank amplitudes and frequencies
double* oscfreqs = NULL;
double phase = 0.0;
double ampfac,freqfac,ampadjust; //Because we cannot know the number of oscillators before hand, we need to calculate it cumulatively
//Recall that adding sine waves amplitude is as simple as numerically adding the amplitude values. So 1 + 3 + 5 + 7 will yield an amp
//value of 16. However, we want amp to be between -1 and 1 --> therefore total amp is 1/(1^2) + 1/(3^2) + 1/(5^2) + 1/(7^2) = 1 + 1/9 + 1/25 + 1/49 = 1.172
//General Rule : totalamp = Sum (from n = 0 to N) 1/(2n-1)^2 where N = number of oscillators
FILE* fpfreq = NULL;
BRKSTREAM *freqstream = NULL, *ampstream = NULL;
unsigned long brkfreqSize = 0;
double minval = 0.0,maxval= 0.0;
FILE* fpamp = NULL;
unsigned long brkampSize = 0;
double amp_minval = 0.0,amp_maxval= 0.0;
clock_t starttime, endtime;
int wavetype;
oscs = NULL;
/********** error checking on wave type **********/
wavetype = atoi(argv[OSC_GEN_WAVETYPE]);
if(wavetype < OSC_GEN_SQUARE || wavetype > OSC_GEN_PULSE)
{
fprintf(stderr, "Error: wavetype not defined\n");
goto exit;
}
/********** error checking on number of oscillators **********/
num_oscs = atoi(argv[OSC_GEN_NUM_OSCS]);
if(num_oscs <= 0)
{
fprintf(stderr, "Error: number of oscillators must be positive\n");
goto exit;
}
/********** define outfile format (with embedded error checking) **********/
outprops.srate = atoi(argv[OSC_GEN_SRATE]);
if(outprops.srate <= 0)
{
fprintf(stderr, "Error: srate must be positive\n");
goto exit;
}
outprops.chans = atoi(argv[OSC_GEN_NUM_CHANS]);
if(outprops.chans <= 0)
{
fprintf(stderr, "Error: number of channels must be positive\n");
goto exit;
}
outprops.samptype = (psf_stype) samptype;
outprops.chformat = STDWAVE;
dur = atof(argv[OSC_GEN_DUR]);
if(dur <= 0.0)
{
fprintf(stderr, "Error: duration must be positive (>=0)\n");
goto exit;
}
outframes = (unsigned long) (dur * outprops.srate + 0.5);
nbufs = outframes / nframes;
remainder = outframes - nbufs * nframes;
if(remainder > 0) nbufs++;
/********** open breakpoint files, or set constants if no breakpoint file is defined **********/
/***** amp (amplitude) breakpoints file *****/
fpamp = fopen(argv[OSC_GEN_AMP], "r"); //try opening specified argument
if(fpamp == NULL)
{
//meaning that either argument OSC_GEN_AMP is not a breakpoint file or error opening
amp = atof(argv[OSC_GEN_AMP]);
if(amp <= 0.0 || amp > 1)
{
fprintf(stderr, "Error: amplitude must be between 0 and 1 (0 <= amp <= 1)\n");
goto exit;
}
}
else
{
//meaning that argument OSC_GEN_AMP is indeed a breakpoint file
ampstream = bps_newstream(fpamp,outprops.srate,&brkampSize);
if(ampstream == NULL)
{
fprintf(stderr, "Error reading amplitude breakpoint file: %s\n", argv[OSC_GEN_AMP]);
goto exit;
}
if(bps_getminmax(ampstream, &minval, &maxval))
{
//meaning we called upon said function that will put into minval and maxval appropriate values
//if said function returns 1 --> we have error
fprintf(stderr, "Error reading range breakpoint file: %s\n", argv[OSC_GEN_AMP]);
goto exit;
}
if(minval < 0.0 || minval > 1.0 || maxval < 0.0 || maxval > 1.0)
{
fprintf(stderr, "Error: amplitude values out of range in breakpoint file\n");
goto exit;
}
}
/***** freq (frequency) breakpoints file *****/
fpfreq = fopen(argv[OSC_GEN_FREQ], "r");
if(fpfreq == NULL)
{
//meaning that either argument OSC_GEN_FREQ is not a breakpoint file or error opening
freq = atof(argv[OSC_GEN_FREQ]);
if(freq <= 0.0)
{
fprintf(stderr, "Error: frequency must be positive\n");
goto exit;
}
}
else
{
//meaning that argument OSC_GEN_FREQ is indeed a breakpoint file
freqstream = bps_newstream(fpfreq, outprops.srate, &brkfreqSize);
if(freqstream == NULL)
{
fprintf(stderr, "Error reading frequncy from breakpoint file: %s\n", argv[OSC_GEN_FREQ]);
goto exit;
}
if(bps_getminmax(freqstream, &minval, &maxval))
{
fprintf(stderr, "Error reading range from breakpoint file: %s\n", argv[OSC_GEN_FREQ]);
goto exit;
}
if(minval <= 0.0)
{
fprintf(stderr, "Error in breakpoing file; Frequency values must be positive\n");
goto exit;
}
}
/********** Initialize portsf **********/
if(psf_init())
{
fprintf(stderr, "Error: Unable to initialize portsf\n");
goto exit;
}
/********** Sample Frame Buffer Memory Aloocation **********/
outframe = (float*)malloc(nframes * outprops.chans * sizeof(float));
if(outframe == NULL)
{
fprintf(stderr, "Error: No memory for outframe buffer\n");
goto exit;
}
/********** Check for correct output extension **********/
outformat = psf_getFormatExt(argv[OSC_GEN_OUTFILE]);
if(outformat == PSF_FMT_UNKNOWN)
{
fprintf(stderr, "Error: invalid extension\n"
"Possible extensions:\t *.wav\t *.aiff\t *.aif\t *.afc\t *.aifc\n");
goto exit;
}
//reach here meaning outformat is viable extension
outprops.format = outformat;
/********** create oscillator amp and oscillator freq arrays **********/
oscamps = (double*)malloc(num_oscs * sizeof(double));
oscfreqs = (double*)malloc(num_oscs * sizeof(double));
if(!oscamps || !oscfreqs)
{
fprintf(stderr, "Error: Failed memory allocation for oscillator amp/freq arrays\n");
goto exit;
}
/********** create amp/freq data for requested waveshape, normalized to 1 **********/
ampfac = 1.0;
freqfac = 1.0;
ampadjust = 0.0;
switch(wavetype)
{
case(OSC_GEN_SQUARE):
for(i=0; i<num_oscs; i++)
{
oscamps[i] = ampfac;
oscfreqs[i] = freqfac;
freqfac += 2.0;
ampadjust += ampfac;
ampfac = 1.0 / freqfac;
}
//normalize
for(i=0; i<num_oscs; i++)
oscamps[i] /= ampadjust;
break;
case(OSC_GEN_TRIANGLE):
for(i=0; i<num_oscs; i++)
{
oscamps[i] = ampfac;
oscfreqs[i] = freqfac;
freqfac += 2.0;
ampadjust += ampfac;
ampfac = 1.0 / (freqfac * freqfac);
}
//normalize
for(i=0; i<num_oscs; i++)
oscamps[i] /= ampadjust;
phase = 0.25;
break;
case(OSC_GEN_SAW_UP):
case(OSC_GEN_SAW_DOWN):
for(i=0; i<num_oscs; i++)
{
oscamps[i] = ampfac;
oscfreqs[i] = freqfac;
freqfac += 1.0;
ampadjust += ampfac;
ampfac = 1.0 / freqfac;
}
if(wavetype == OSC_GEN_SAW_UP)
ampadjust = -ampadjust;
//normalize
for(i=0; i<num_oscs; i++)
oscamps[i] /= ampadjust;
break;
case(OSC_GEN_PULSE):
freqfac = 1.0;
ampfac = 1.0 / num_oscs;
ampadjust = 0.0;
for(i=0; i<num_oscs; i++)
{
oscamps[i] = ampfac;
oscfreqs[i] = freqfac;
freqfac += 1.0;
}
break;
}
/********** Create Oscillator Bank **********/
oscs = (OSCIL**)malloc(num_oscs * sizeof(OSCIL*));
if(!oscs)
{
fprintf(stderr, "Error: Failed memory allocation on creation of oscillator bank\n");
goto exit;
}
for(i=0; i< num_oscs; i++)
{
oscs[i] = new_oscil_with_phase(outprops.srate, phase);
if(!oscs[i])
{
fprintf(stderr, "Error: Failed memory allocation on creation of oscillator object\n");
goto exit;
}
}
/********** Initialize Peak nfo **********/
peaks = (PSF_CHPEAK*)malloc(outprops.chans * sizeof(PSF_CHPEAK));
if(peaks == NULL)
{
fprintf(stderr, "Error: No memory for peaks\n");
goto exit;
}
/********** Create and Handle outfile **********/
ofd = psf_sndCreate(argv[OSC_GEN_OUTFILE],&outprops, 0, 0, PSF_CREATE_RDWR); //refer to sf2float for documentation
if(ofd < 0)
{
fprintf(stderr, "Error: Unable to create outfile\n");
goto exit;
}
/********** Audio Processing **********/
printf("Reached here\t\t numbufs: %lu; numframes: %lu\n", nbufs, nframes);
starttime = clock();
for(i=0; i<nbufs; i++)
{
long j,k,l;
double val;
if(i == nbufs -1)
nframes = remainder;
for(j=0; j< nframes; j++)
{
if(freqstream)
freq = bps_tick(freqstream);
if(ampstream)
amp = bps_tick(freqstream);
val = 0.0;
for(l=0; l<num_oscs; l++)
{
val += oscamps[l] * sine_wave_node(oscs[l], freq * oscfreqs[l]);
}
for(k=0; k<outprops.chans; k++)
{
outframe[j*outprops.chans +k] = (float)(val * amp);
}
} //end j for-loop
if(psf_sndWriteFloatFrames(ofd, outframe, nframes) != nframes)
{
fprintf(stderr, "Error writing to outfile");
break;
}
}//end i for-loop
endtime = clock();
exit:
fprintf(stdout, "Task Finished \nElapsed Time: %f seconds\n", (endtime - starttime)/(double)CLOCKS_PER_SEC);
/***** Report PEAK values to user *****/
if(psf_sndReadPeaks(ofd,peaks,NULL) > 0){
long i;
double peaktime;
printf("PEAK information:\n");
for(i=0;i < outprops.chans;i++){
peaktime = (double) peaks[i].pos / (double) outprops.srate;
printf("CH %d:\t%.4f at %.4f secs\n", (int)(i+1), peaks[i].val, peaktime);
}
}
if(ofd >= 0)
psf_sndClose(ofd);
if(outframe)
free(outframe);
if(peaks)
free(peaks);
if(oscs){
for(i=0;i < num_oscs;i++){
free(oscs[i]);
}
free(oscs);
}
if(oscamps)
free(oscamps);
if(oscfreqs)
free(oscfreqs);
psf_finish();
exit(1);
}
void sig_gen(int argc, char *argv[])
{
//This function will generate simple waveforms --> Sine, Triangle, Square, Sawtooth up, Sawtooth down
//Showcases Pseudo-Object Oriented Programming, Function Pointers (functoids)
/***************USAGE***************
siggen outfile wavetype dur srate amp freq
**********************************/
if(argc < SIG_GEN_NARGS)
{
fprintf(stderr, "insufficient arguments.\n"
"usage: siggen outfile wavetype dur srate amp freq\n"
"where wavetype =:\n"
" 0 = sine\n"
" 1 = triangle\n"
" 2 = square\n"
" 3 = sawtooth up\n"
" 4 = sawtooth down\n"
"dur = duration of outfile (seconds)\n"
"srate = required sample rate of outfile\n"
"amp = amplitude value or breakpoint file (0 < amp <= 1.0)\n"
"freq = frequency value (freq > 0) or breakpoint file.\n"
);
exit(1);
}
/********* initialize all dynamic resources to default states **********/
PSF_PROPS outprops;
int ofd = -1;
PSF_CHPEAK* peaks = NULL;
psf_format outformat = PSF_FMT_UNKNOWN; //all psf* defined in portsf sound library
long nframes = NFRAMES;
float* outframe = NULL;
double amp,freq,dur;
unsigned long outframes,nbufs,i;
long remainder;
int wavetype;
OSCIL* osc = NULL; //OSCIL pseudo-object defined in wave_generator.h
node_func_ptr node; //function pointer defined in wave_generator.h
FILE* fpfreq = NULL;
FILE* fpamp = NULL;
BRKSTREAM* freqstream = NULL; //BRKSTREAM* defined in breakpoint.h
BRKSTREAM* ampstream = NULL;
unsigned long brkfreqSize = 0, brkampSize = 0;
double minval, maxval;
/********** error checking on wave type **********/
wavetype = atoi(argv[SIG_GEN_TYPE]);
if(wavetype < SINE_WAVE || wavetype >= NUM_WAVE_TYPES)
{
fprintf(stderr, "Error: wavetype not defined\n");
goto exit;
}
/********** assigning function pointer accordingly **********/
switch(wavetype)
{
case(SINE_WAVE):
node = sine_wave_node; //node is a function pointer (type: node_func_ptr); sine_wave_node is function
break;
case(SQAURE_WAVE):
node = square_wave_node;
break;
case(TRIANGLE_WAVE):
node = triangle_wave_node;
break;
case(SAW_UP_WAVE):
node = sawtooth_up_wave_node;
break;
case(SAW_DOWN_WAVE):
node = sawtooth_down_wave_node;
break;
}
/********** define outfile format (with embedded error checking) **********/
outprops.srate = atoi(argv[SIG_GEN_SRATE]);
if(outprops.srate <= 0)
{
fprintf(stderr, "Error: srate must by positive (>=0)\n");
goto exit;
}
outprops.chans = 1; //as of this sig_gen implementation --> mono
outprops.samptype = (psf_stype) PSF_SAMP_16; //16-bit samples
outprops.chformat = STDWAVE; //STDWAVE defined in portsf library
dur = atof(argv[SIG_GEN_DUR]);
if(dur <= 0.0)
{
fprintf(stderr, "Error: duration must be positive (>=0)\n");
goto exit;
}
outframes = (unsigned long) (dur * outprops.srate + 0.5);
nbufs = outframes / nframes;
remainder = outframes - nbufs * nframes;
if(remainder) nbufs++;
/********** open breakpoint files, or set constants if no breakpoint file is defined **********/
/***** amp (amplitude) breakpoints file *****/
fpamp = fopen(argv[SIG_GEN_AMP], "r"); //try opening specified argument
if(fpamp == NULL)
{
//meaning that either argument SIG_GEN_AMP is not a breakpoint file or error opening
amp = atof(argv[SIG_GEN_AMP]);
if(amp <= 0.0 || amp > 1)
{
fprintf(stderr, "Error: amplitude must be between 0 and 1 (0 <= amp <= 1)\n");
goto exit;
}
}
else
{
//meaning that argument SIG_GEN_AMP is indeed a breakpoint file
ampstream = bps_newstream(fpamp,outprops.srate,&brkampSize);
if(ampstream == NULL)
{
fprintf(stderr, "Error reading amplitude breakpoint file: %s\n", argv[SIG_GEN_AMP]);
goto exit;
}
if(bps_getminmax(ampstream, &minval, &maxval))
{
//meaning we called upon said function that will put into minval and maxval appropriate values
//if said function returns 1 --> we have error
fprintf(stderr, "Error reading range breakpoint file: %s\n", argv[SIG_GEN_AMP]);
goto exit;
}
if(minval < 0.0 || minval > 1.0 || maxval < 0.0 || maxval > 1.0)
{
fprintf(stderr, "Error: amplitude values out of range in breakpoint file\n");
goto exit;
}
}
/***** freq (frequency) breakpoints file *****/
fpfreq = fopen(argv[SIG_GEN_FREQ], "r");
if(fpfreq == NULL)
{
//meaning that either argument SIG_GEN_FREQ is not a breakpoint file or error opening
freq = atof(argv[SIG_GEN_FREQ]);
if(freq <= 0.0)
{
fprintf(stderr, "Error: frequency must be positive\n");
goto exit;
}
}
else
{
//meaning that argument SIG_GEN_FREQ is indeed a breakpoint file
freqstream = bps_newstream(fpfreq, outprops.srate, &brkfreqSize);
if(freqstream == NULL)
{
fprintf(stderr, "Error reading frequncy from breakpoint file: %s\n", argv[SIG_GEN_FREQ]);
goto exit;
}
if(bps_getminmax(freqstream, &minval, &maxval))
{
fprintf(stderr, "Error reading range from breakpoint file: %s\n", argv[SIG_GEN_FREQ]);
goto exit;
}
if(minval <= 0.0)
{
fprintf(stderr, "Error in breakpoing file; Frequency values must be positive\n");
goto exit;
}
}
/********** Initialize OSCIL pseudo-object **********/
osc = new_oscil(outprops.srate);
if(osc == NULL)
{
fprintf(stderr, "No memory for oscillator\n");
goto exit;
}
/********** Initialize portsf **********/
if(psf_init())
{
fprintf(stderr, "Error: Unable to initialize portsf\n");
goto exit;
}
/********** Sample Frame Buffer Memory Aloocation **********/
outframe = (float*)malloc(nframes * outprops.chans * sizeof(float));
if(outframe == NULL)
{
fprintf(stderr, "Error: No memory for outframe buffer\n");
goto exit;
}
/********** Check for correct output extension **********/
outformat = psf_getFormatExt(argv[SIG_GEN_OUTFILE]);
if(outformat == PSF_FMT_UNKNOWN)
{
fprintf(stderr, "Error: invalid extension\n"
"Possible extensions:\t *.wav\t *.aiff\t *.aif\t *.afc\t *.aifc\n");
goto exit;
}
//reach here meaning outformat is viable extension
outprops.format = outformat;
/********** Initialize Peak nfo **********/
peaks = (PSF_CHPEAK*)malloc(outprops.chans * sizeof(PSF_CHPEAK));
if(peaks == NULL)
{
fprintf(stderr, "Error: No memory for peaks\n");
goto exit;
}
/********** Create and Handle outfile **********/
ofd = psf_sndCreate(argv[SIG_GEN_OUTFILE],&outprops, 0, 0, PSF_CREATE_RDWR); //refer to sf2float for documentation
if(ofd < 0)
{
fprintf(stderr, "Error: Unable to create outfile\n");
goto exit;
}
/********** Audio Processing **********/
for(i=0; i<nbufs; i++)
{
long j;
if(i == nbufs-1)
nframes = remainder;
for(j=0; j<nframes; j++)
{
if(freqstream)
freq = bps_tick(freqstream);
if(ampstream)
amp = bps_tick(ampstream);
outframe[j] = (float)(amp * node(osc,freq)); //call upon function via function pointer with OSCIL pseudo-object and freq;
}
if(psf_sndWriteFloatFrames(ofd, outframe, nframes) != nframes)
{
fprintf(stderr, "Error: unable to write to outfile\n");
goto exit;
}
}
/********** Clean_up section **********/
exit:
fprintf(stderr, "Task Finished\n");
/***** Report PEAK values to user *****/
if(psf_sndReadPeaks(ofd,peaks,NULL) > 0){
long i;
double peaktime;
printf("PEAK information:\n");
for(i=0;i < outprops.chans;i++){
peaktime = (double) peaks[i].pos / (double) outprops.srate;
printf("CH %d:\t%.4f at %.4f secs\n", (int)(i+1), peaks[i].val, peaktime);
}
}
if(ofd >= 0)
if(psf_sndClose(ofd))
printf("Error closing outfile %s\n",argv[SIG_GEN_OUTFILE]);
if(outframe)
free(outframe);
if(peaks)
free(peaks);
/*TODO: cleanup any other resources */
if(osc)
free(osc);
if(fpfreq)
if(fclose(fpfreq))
printf("Error closing breakpoint file %s\n",argv[SIG_GEN_FREQ]);
if(fpamp)
if(fclose(fpamp))
printf("Error closing breakpoint file %s\n",argv[SIG_GEN_AMP]);
if(freqstream){
bps_freepoints(freqstream);
free(freqstream);
}
if(ampstream){
bps_freepoints(ampstream);
free(ampstream);
}
psf_finish();
exit(1);
}
void sf2float(int argc, char *argv[])
{
//This function will sound portsf to convert a soundfile to float format
/*=========================USAGE=========================
sf2float infile outfile
======================================================*/
if(argc!=NUMARGS)
{
fprintf(stderr, "USAGE: sf2float infile outfile\n");
exit(1);
}
PSF_PROPS props; //structure containing sample rate, channels, sample type, format, channel format...
long framesread,totalread;
int infd =-1 , outfd = -1;
psf_format outformat = PSF_FMT_UNKNOWN; //initially make the outformat unknown until properly defined by create function
PSF_CHPEAK* peaks = NULL; //in waveform and aiff, peaks holds the channel peak values accordingly
float* frame = NULL; //a frame is a set of n datatypes (16-bit --> short; 24 bit --> long; 32 bit --> float) where n is determined by number of channels
//initialize portsf
int psfd = psf_init();
if(psfd<0)
{
fprintf(stderr, "Unable to initialize portsf\n");
exit(1);
}
//function to open exsiting soudfile protoype--> psf_sndOpen(const char *path, PSF_PROPS *props, int rescale)
//PSF_PROPS <-- refer to note above on definition line of props
//rescale --> normally set to 0 for samples to be read unaltered; otherwise, rescale normalizes sound between -1 and 1 to preven clipping
infd = psf_sndOpen(argv[IN_FILE], &props, 0);
if(infd<0)
{
fprintf(stderr, "Unable to open soundfile\n");
goto exit; //Works like a JAL command; exit block must be within same function block; used for cleanup purposes. ALL SUBSEQUENT ERROR HANDLING MUST USE GOTO
}
//tell user if in_file is already floats (i.e 32-bit)
if(props.samptype == PSF_SAMP_IEEE_FLOAT)
{
fprintf(stderr, "Infile already of type float\t Nothing to do...\n");
goto exit;
}
else props.samptype = PSF_SAMP_IEEE_FLOAT; //if not already of type float --> then set the samptype parameter of props strcuture to type float
//Check to see that outfile extension is applicable --> noncompressed, lossless --> wav, aiff, aif, afc, aifc
outformat = psf_getFormatExt(argv[OUTFILE]);
if(outformat==PSF_FMT_UNKNOWN)
{
fprintf(stderr, "Improper outfile format\nAccepted Formats: .wav, .aiff, .aif, .afc, .aifc\n");
goto exit;
}
else props.format=outformat; //if format applicable --> set the format paramter of props structure to the outformat as discovered by portfs on outfile extension provided
//Opening a sound file for writing prototype --> psf_sndCreate(const char *path, const PSF_PROPS *props, int clip_floats, int minheader, int mode)
//clip_floats --> set the way the floats are written <-- used in conjunction with rescale value being nonzero in psf_sndOpen
//minheader --> normally set to 0; set to 1 for legacy compatibility
//mode --> control of read-write access to the file {PSF_CREATE_RDWR, PSF_CREATE_TEMPORARY, PSF_CREATE_WRONLY}
outfd = psf_sndCreate(argv[OUTFILE], &props, 0, 0, PSF_CREATE_RDWR);
if(outfd<0)
{
fprintf(stderr, "Unable to create soundfile\n");
goto exit;
}
//Allocate space for one sample frame
frame = (float*)malloc(props.chans * sizeof(float));
if(frame==NULL) goto no_memory;
//Allocate space for PEAK info
peaks = (PSF_CHPEAK*)malloc(props.chans * sizeof(PSF_CHPEAK));
if(peaks==NULL) goto no_memory;
//single-frame loop --> copying as floats (conversion process)
framesread = psf_sndReadFloatFrames(infd, frame, 1);
totalread = 0;
while(framesread==1)
{
totalread++;
if(psf_sndWriteFloatFrames(outfd,frame,1) != 1)
{
fprintf(stderr, "Error writing to file\n");
break;
}
/* ===============DO ANY PROCESSING HERE; CORE OF AUDIO PROCESSING===============*/
framesread = psf_sndReadFloatFrames(infd,frame,1);
}
if(framesread<0)
{
fprintf(stderr, "Error handling infile; outfile is incomplete\n");
goto exit;
}
else fprintf(stdout, "Task Finished %d sample frames copied to %s\n", (int)totalread, argv[OUTFILE]);
//report PEAK values to user
if(psf_sndReadPeaks(outfd, peaks, NULL) >0)
{
long i;
double peakTime;
fprintf(stdout, "PEAK Information:\n");
for(i=0; i<props.chans; i++)
{
peakTime = (double) peaks[i].pos / props.srate;
fprintf(stdout, "CH %d:\t%.4f at %.4f secs\n", (int)(i+1), peaks[i].val, peakTime);
}
}
exit:
if(infd>=0) psf_sndClose(infd);
if(outfd>=0) psf_sndClose(outfd);
if(frame) free(frame);
if(peaks) free(peaks);
psf_finish(); // close portfs
fprintf(stderr, "Program Terminated\n");
exit(1);
no_memory:
fprintf(stderr, "No Memory!\n");
goto exit;
}