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minimodem uses tscope_print

This commit is contained in:
Kamal Mostafa 2011-05-25 15:26:13 -07:00
parent 560e15ba8d
commit 62dbd2c27c
3 changed files with 21 additions and 31 deletions
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2
src/Makefile.am
View File

@ -6,7 +6,7 @@ INCLUDES = $(DEPS_CFLAGS)
bin_PROGRAMS = minimodem tscope bin_PROGRAMS = minimodem tscope
minimodem_LDADD = $(DEPS_LIBS) minimodem_LDADD = $(DEPS_LIBS)
minimodem_SOURCES = minimodem.c minimodem_SOURCES = minimodem.c tscope_print.c
tscope_LDADD = $(DEPS_LIBS) tscope_LDADD = $(DEPS_LIBS)
tscope_SOURCES = tscope.c tscope_print.c tscope_SOURCES = tscope.c tscope_print.c

4
src/Makefile.in
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@ -45,7 +45,7 @@ CONFIG_CLEAN_FILES =
CONFIG_CLEAN_VPATH_FILES = CONFIG_CLEAN_VPATH_FILES =
am__installdirs = "$(DESTDIR)$(bindir)" am__installdirs = "$(DESTDIR)$(bindir)"
PROGRAMS = $(bin_PROGRAMS) PROGRAMS = $(bin_PROGRAMS)
am_minimodem_OBJECTS = minimodem.$(OBJEXT) am_minimodem_OBJECTS = minimodem.$(OBJEXT) tscope_print.$(OBJEXT)
minimodem_OBJECTS = $(am_minimodem_OBJECTS) minimodem_OBJECTS = $(am_minimodem_OBJECTS)
am__DEPENDENCIES_1 = am__DEPENDENCIES_1 =
minimodem_DEPENDENCIES = $(am__DEPENDENCIES_1) minimodem_DEPENDENCIES = $(am__DEPENDENCIES_1)
@ -156,7 +156,7 @@ top_srcdir = @top_srcdir@
AM_CFLAGS = -Wall -Werror AM_CFLAGS = -Wall -Werror
INCLUDES = $(DEPS_CFLAGS) INCLUDES = $(DEPS_CFLAGS)
minimodem_LDADD = $(DEPS_LIBS) minimodem_LDADD = $(DEPS_LIBS)
minimodem_SOURCES = minimodem.c minimodem_SOURCES = minimodem.c tscope_print.c
tscope_LDADD = $(DEPS_LIBS) tscope_LDADD = $(DEPS_LIBS)
tscope_SOURCES = tscope.c tscope_print.c tscope_SOURCES = tscope.c tscope_print.c
all: all-am all: all-am

46
src/minimodem.c
View File

@ -17,6 +17,7 @@
#include <fftw3.h> #include <fftw3.h>
#include "tscope_print.h"
static inline static inline
float float
@ -150,6 +151,11 @@ int main(int argc, char*argv[]) {
// float magscalar = 1.0 / (fftsize/2.0); /* normalize fftw output */ // float magscalar = 1.0 / (fftsize/2.0); /* normalize fftw output */
float magscalar = 1.0 / (nsamples/2.0); /* normalize fftw output */ float magscalar = 1.0 / (nsamples/2.0); /* normalize fftw output */
/* pulseaudio *adds* when downmixing 2 channels to 1; if we're using
* only one channel here, we blindly assume that pulseaudio downmixed
* from 2, and rescale magnitudes accordingly. */
if ( pa_nchannels == 1 )
magscalar /= 2.0;
float actual_decode_rate = (float)sample_rate / nsamples; float actual_decode_rate = (float)sample_rate / nsamples;
fprintf(stderr, "### baud=%.2f mark=%u space=%u ###\n", fprintf(stderr, "### baud=%.2f mark=%u space=%u ###\n",
@ -234,11 +240,8 @@ reprocess_audio:
// Detect carrier // Detect carrier
float mag_detect = 0.01; float mag_detect = 0.01;
/* pulseaudio *adds* when downmixing 2 channels to 1; if we're using only unsigned char carrier_detect = mag_mark + mag_space > mag_detect
* one channel here, we blindly assume that pulseaudio downmixed from 2. */ ? 1 : 0;
if ( pa_nchannels == 1 )
mag_detect *= 2.0;
unsigned char carrier_detect = mag_mark + mag_space > mag_detect ? 1 : 0;
#ifdef TRICK #ifdef TRICK
@ -339,34 +342,21 @@ reprocess_audio:
carrier_detected = carrier_detect; carrier_detected = carrier_detect;
if ( textscope ) { if ( textscope ) {
printf("%s %c ", printf("%s %c ",
carrier_detected ? "CD" : " ", carrier_detected ? "CD" : " ",
carrier_detected ? ( bit ? '1' : '0' ) : ' '); carrier_detected ? ( bit ? '1' : '0' ) : ' ');
float magmax = 0; int one_line_mode = 0;
int show_maxmag = 1;
int show_nbands = nbands < 40 ? nbands : 40;
tscope_print(fftout, show_nbands, magscalar,
one_line_mode, show_maxmag);
for ( i=0; i<nbands*pa_nchannels; i++ ) { // if ( i%nbands == bfsk_mark_band )
if ( i%nbands == 0 ) // magchars = " mMM^";
printf("|"); // if ( i%nbands == bfsk_space_band )
float mag = band_mag(fftout, i, magscalar); // magchars = " sSS^";
if ( mag > magmax )
magmax = mag;
char *magchars = " .-=^";
if ( i%nbands == bfsk_mark_band )
magchars = " mMM^";
if ( i%nbands == bfsk_space_band )
magchars = " sSS^";
char c = magchars[0];
if ( mag > 0.10 ) c = magchars[1];
if ( mag > 0.25 ) c = magchars[2];
if ( mag > 0.50 ) c = magchars[3];
if ( mag > 1.00 ) c = magchars[4];
printf("%c", c);
if ( i > 30 )
break;
}
printf("| in[%+4.2f %+4.2f] >mag %+.2f", inmin, inmax, magmax);
printf(" "); printf(" ");
for ( i=15; i>=0; i-- ) for ( i=15; i>=0; i-- )