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tscope_print API

This commit is contained in:
Kamal Mostafa 2011-05-25 12:56:15 -07:00
parent 5cbaa98027
commit 560e15ba8d
5 changed files with 87 additions and 45 deletions
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2
src/Makefile.am
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@ -9,5 +9,5 @@ minimodem_LDADD = $(DEPS_LIBS)
minimodem_SOURCES = minimodem.c
tscope_LDADD = $(DEPS_LIBS)
tscope_SOURCES = tscope.c
tscope_SOURCES = tscope.c tscope_print.c

5
src/Makefile.in
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@ -49,7 +49,7 @@ am_minimodem_OBJECTS = minimodem.$(OBJEXT)
minimodem_OBJECTS = $(am_minimodem_OBJECTS)
am__DEPENDENCIES_1 =
minimodem_DEPENDENCIES = $(am__DEPENDENCIES_1)
am_tscope_OBJECTS = tscope.$(OBJEXT)
am_tscope_OBJECTS = tscope.$(OBJEXT) tscope_print.$(OBJEXT)
tscope_OBJECTS = $(am_tscope_OBJECTS)
tscope_DEPENDENCIES = $(am__DEPENDENCIES_1)
DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)
@ -158,7 +158,7 @@ INCLUDES = $(DEPS_CFLAGS)
minimodem_LDADD = $(DEPS_LIBS)
minimodem_SOURCES = minimodem.c
tscope_LDADD = $(DEPS_LIBS)
tscope_SOURCES = tscope.c
tscope_SOURCES = tscope.c tscope_print.c
all: all-am
.SUFFIXES:
@ -245,6 +245,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/minimodem.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tscope.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tscope_print.Po@am__quote@
.c.o:
@am__fastdepCC_TRUE@ $(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<

47
src/tscope.c
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@ -27,47 +27,7 @@
#include <fftw3.h>
static inline
float
band_mag( fftwf_complex * const cplx, unsigned int band, float scalar )
{
float re = cplx[band][0];
float im = cplx[band][1];
float mag = hypot(re, im) * scalar;
return mag;
}
void
tscope_print( fftwf_complex * const fftout, int nbands, float magscalar,
unsigned char one_line_mode, unsigned char show_maxmag )
{
char magchars[] = " .-=+#^";
char *buf = alloca(nbands+1);
if ( one_line_mode )
magchars[0] = '_';
float maxmag = 0;
int i;
for ( i=0; i<nbands; i++ ) {
float mag = band_mag(fftout, i, magscalar);
if ( mag > maxmag )
maxmag = mag;
char c;
if ( mag <= 0.05 ) c = magchars[0];
else if ( mag <= 0.10 ) c = magchars[1];
else if ( mag <= 0.25 ) c = magchars[2];
else if ( mag <= 0.50 ) c = magchars[3];
else if ( mag <= 0.95 ) c = magchars[4];
else if ( mag <= 1.00 ) c = magchars[5];
else c = magchars[6];
buf[i] = c;
}
buf[i] = 0;
if ( show_maxmag )
printf(" %.2f", maxmag);
printf("|%s|", buf);
}
#include "tscope_print.h"
int
@ -87,6 +47,9 @@ main( int argc, char*argv[] )
int one_line_mode = 1;
int show_maxmag = 1;
if ( ! isatty(1) )
one_line_mode = 0;
int argi = 1;
while ( argi < argc && argv[argi][0] == '-' ) {
/* -s switch enables "scrolling mode" instead of "one line mode" */
@ -198,7 +161,7 @@ main( int argc, char*argv[] )
int n;
for ( n=0; n<pa_nchannels; n++ )
tscope_print(fftout+n*nbands, show_nbands, magscalar,
one_line_mode, show_maxmag);
one_line_mode, show_maxmag);
printf( one_line_mode ? "\r" : "\n" );
fflush(stdout);
}

63
src/tscope_print.c Normal file
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@ -0,0 +1,63 @@
/*
* tscope_print.c
*
* Author: Kamal Mostafa <kamal@whence.com>
*
* Unpublished work, not licensed for any purpose.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <alloca.h>
#include <math.h>
#include <fftw3.h>
#include "tscope_print.h"
static inline
float
band_mag( fftwf_complex * const cplx, unsigned int band, float scalar )
{
float re = cplx[band][0];
float im = cplx[band][1];
float mag = hypot(re, im) * scalar;
return mag;
}
void
tscope_print( fftwf_complex * const fftout, int nbands, float magscalar,
int one_line_mode, int show_maxmag )
{
char *buf = alloca(nbands+1);
char magchars[] = " .-=+#^";
if ( one_line_mode )
magchars[0] = '_';
float maxmag = 0;
int i;
for ( i=0; i<nbands; i++ ) {
char c;
float mag = band_mag(fftout, i, magscalar);
if ( maxmag < mag )
maxmag = mag;
if ( mag <= 0.05 ) c = magchars[0];
else if ( mag <= 0.10 ) c = magchars[1];
else if ( mag <= 0.25 ) c = magchars[2];
else if ( mag <= 0.50 ) c = magchars[3];
else if ( mag <= 0.95 ) c = magchars[4];
else if ( mag <= 1.00 ) c = magchars[5];
else c = magchars[6];
buf[i] = c;
}
buf[i] = 0;
if ( show_maxmag )
printf(" %.2f", maxmag);
printf("|%s|", buf);
}

15
src/tscope_print.h Normal file
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@ -0,0 +1,15 @@
/*
* tscope_print.h
*
* Author: Kamal Mostafa <kamal@whence.com>
*
* Unpublished work, not licensed for any purpose.
*
*/
#include <fftw3.h>
extern void
tscope_print( fftwf_complex * const fftout, int nbands, float magscalar,
int one_line_mode, int show_maxmag );