library_includedir = $(prefix)/include
library_include_HEADERS = codec2.h codec2_fdmdv.h codec2_fifo.h
-bin_PROGRAMS = c2demo c2enc c2dec c2sim fdmdv_get_test_bits fdmdv_mod fdmdv_demod fdmdv_put_test_bits fdmdv_interleave sim_multipath_errors
+bin_PROGRAMS = c2demo c2enc c2dec c2sim fdmdv_get_test_bits fdmdv_mod fdmdv_demod fdmdv_put_test_bits fdmdv_interleave insert_errors
c2demo_SOURCES = c2demo.c
c2demo_LDADD = $(lib_LTLIBRARIES)
fdmdv_interleave_SOURCES = fdmdv_interleave.c
fdmdv_interleave_LDFLAGS = $(LIBS)
-sim_multipath_errors_SOURCES = sim_multipath_errors.c
-sim_multipath_errors_LDFLAGS = $(LIBS)
+insert_errors_SOURCES = insert_errors.c
+insert_errors_LDFLAGS = $(LIBS)
bin_PROGRAMS = c2demo$(EXEEXT) c2enc$(EXEEXT) c2dec$(EXEEXT) \
c2sim$(EXEEXT) fdmdv_get_test_bits$(EXEEXT) fdmdv_mod$(EXEEXT) \
fdmdv_demod$(EXEEXT) fdmdv_put_test_bits$(EXEEXT) \
- fdmdv_interleave$(EXEEXT) sim_multipath_errors$(EXEEXT)
+ fdmdv_interleave$(EXEEXT) insert_errors$(EXEEXT)
subdir = src
DIST_COMMON = $(library_include_HEADERS) $(srcdir)/Makefile.am \
$(srcdir)/Makefile.in
genlspdtcb_SOURCES = genlspdtcb.c
genlspdtcb_OBJECTS = genlspdtcb.$(OBJEXT)
genlspdtcb_LDADD = $(LDADD)
-am_sim_multipath_errors_OBJECTS = sim_multipath_errors.$(OBJEXT)
-sim_multipath_errors_OBJECTS = $(am_sim_multipath_errors_OBJECTS)
-sim_multipath_errors_LDADD = $(LDADD)
+am_insert_errors_OBJECTS = insert_errors.$(OBJEXT)
+insert_errors_OBJECTS = $(am_insert_errors_OBJECTS)
+insert_errors_LDADD = $(LDADD)
DEFAULT_INCLUDES = -I. -I$(srcdir)
depcomp = $(SHELL) $(top_srcdir)/depcomp
am__depfiles_maybe = depfiles
$(c2enc_SOURCES) $(c2sim_SOURCES) $(fdmdv_demod_SOURCES) \
$(fdmdv_get_test_bits_SOURCES) $(fdmdv_interleave_SOURCES) \
$(fdmdv_mod_SOURCES) $(fdmdv_put_test_bits_SOURCES) \
- generate_codebook.c genlspdtcb.c \
- $(sim_multipath_errors_SOURCES)
+ generate_codebook.c genlspdtcb.c $(insert_errors_SOURCES)
DIST_SOURCES = $(libcodec2_la_SOURCES) $(c2dec_SOURCES) \
$(c2demo_SOURCES) $(c2enc_SOURCES) $(c2sim_SOURCES) \
$(fdmdv_demod_SOURCES) $(fdmdv_get_test_bits_SOURCES) \
$(fdmdv_interleave_SOURCES) $(fdmdv_mod_SOURCES) \
$(fdmdv_put_test_bits_SOURCES) generate_codebook.c \
- genlspdtcb.c $(sim_multipath_errors_SOURCES)
+ genlspdtcb.c $(insert_errors_SOURCES)
library_includeHEADERS_INSTALL = $(INSTALL_HEADER)
HEADERS = $(library_include_HEADERS)
ETAGS = etags
fdmdv_put_test_bits_LDFLAGS = $(LIBS)
fdmdv_interleave_SOURCES = fdmdv_interleave.c
fdmdv_interleave_LDFLAGS = $(LIBS)
-sim_multipath_errors_SOURCES = sim_multipath_errors.c
-sim_multipath_errors_LDFLAGS = $(LIBS)
+insert_errors_SOURCES = insert_errors.c
+insert_errors_LDFLAGS = $(LIBS)
all: all-am
.SUFFIXES:
genlspdtcb$(EXEEXT): $(genlspdtcb_OBJECTS) $(genlspdtcb_DEPENDENCIES)
@rm -f genlspdtcb$(EXEEXT)
$(LINK) $(genlspdtcb_LDFLAGS) $(genlspdtcb_OBJECTS) $(genlspdtcb_LDADD) $(LIBS)
-sim_multipath_errors$(EXEEXT): $(sim_multipath_errors_OBJECTS) $(sim_multipath_errors_DEPENDENCIES)
- @rm -f sim_multipath_errors$(EXEEXT)
- $(LINK) $(sim_multipath_errors_LDFLAGS) $(sim_multipath_errors_OBJECTS) $(sim_multipath_errors_LDADD) $(LIBS)
+insert_errors$(EXEEXT): $(insert_errors_OBJECTS) $(insert_errors_DEPENDENCIES)
+ @rm -f insert_errors$(EXEEXT)
+ $(LINK) $(insert_errors_LDFLAGS) $(insert_errors_OBJECTS) $(insert_errors_LDADD) $(LIBS)
mostlyclean-compile:
-rm -f *.$(OBJEXT)
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/fdmdv_put_test_bits.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/generate_codebook.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/genlspdtcb.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/insert_errors.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/kiss_fft.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libcodec2_la-codebook.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libcodec2_la-codebookd.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libcodec2_la-sine.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/octave.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/phaseexp.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/sim_multipath_errors.Po@am__quote@
.c.o:
@am__fastdepCC_TRUE@ if $(COMPILE) -MT $@ -MD -MP -MF "$(DEPDIR)/$*.Tpo" -c -o $@ $<; \
--- /dev/null
+/*---------------------------------------------------------------------------*\
+
+ FILE........: insert_errors.c
+ AUTHOR......: David Rowe
+ DATE CREATED: 20/2/2013
+
+ Inserts errors into a Codec 2 bit stream using error files. The
+ error files have one 16 bit short per bit, the short is set to 1 if
+ there is an error, or zero otherwise. The Codec 2 bit stream files
+ are in packed format, i.e. c2enc/c2dec format.
+
+\*---------------------------------------------------------------------------*/
+
+/*
+ Copyright (C) 2013 David Rowe
+
+ All rights reserved.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License version 2.1, as
+ published by the Free Software Foundation. This program is
+ distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "codec2.h"
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+// This just assumes 1400 bit/s mode for now
+
+#define BITS_PER_FRAME 56
+#define BYTES_PER_FRAME 7
+
+int main(int argc, char *argv[])
+{
+ FILE *fin;
+ FILE *fout;
+ FILE *ferror;
+ int i, start_bit, end_bit, bit;
+ unsigned char byte;
+ short error;
+ int errors, bits;
+
+ if (argc < 3) {
+ printf("%s InputBitFile OutputBitFile ErrorFile [startBit endBit]\n", argv[0]);
+ exit(1);
+ }
+
+ if (strcmp(argv[1], "-") == 0) fin = stdin;
+ else if ( (fin = fopen(argv[1],"rb")) == NULL ) {
+ fprintf(stderr, "Error opening input bit file: %s: %s.\n",
+ argv[1], strerror(errno));
+ exit(1);
+ }
+
+ if (strcmp(argv[2], "-") == 0) fout = stdout;
+ else if ( (fout = fopen(argv[2],"wb")) == NULL ) {
+ fprintf(stderr, "Error opening output speech file: %s: %s.\n",
+ argv[2], strerror(errno));
+ exit(1);
+ }
+
+ if ((ferror = fopen(argv[3],"rb")) == NULL ) {
+ fprintf(stderr, "Error opening error file: %s: %s.\n",
+ argv[3], strerror(errno));
+ exit(1);
+ }
+
+ start_bit = 0; end_bit = BITS_PER_FRAME;
+ if (argc == 6) {
+ start_bit = atoi(argv[4]);
+ end_bit = atoi(argv[5]);
+ }
+
+ bit = 0;
+ bits = errors = 0;
+
+ while(fread(&byte, sizeof(char), 1, fin) == 1) {
+
+ for(i=0; i<8; i++) {
+ bits++;
+ //printf("bit: %d start_bit: %d end_bit: %d\n", bit, start_bit, end_bit);
+ if (fread(&error, sizeof(short), 1, ferror)) {
+ if ((bit >= start_bit) && (bit <= end_bit))
+ byte ^= error << i;
+ if (error)
+ errors++;
+ }
+ else {
+ fprintf(stderr,"bits: %d ber: %4.3f\n", bits, (float)errors/bits);
+ fclose (fin); fclose(fout); fclose(ferror);
+ exit(0);
+ }
+ bit++;
+ if (bit == BITS_PER_FRAME)
+ bit = 0;
+ }
+ fwrite(&byte, sizeof(char), 1, fout);
+ }
+
+ fclose(fin);
+ fclose(fout);
+ fclose(ferror);
+
+ fprintf(stderr,"bits: %d ber: %4.3f\n", bits, (float)errors/bits);
+
+ return 0;
+}
+++ /dev/null
-/*---------------------------------------------------------------------------*\
-
- FILE........: sim_multipath_errors.c
- AUTHOR......: David Rowe
- DATE CREATED: 13/2/2013
-
- Simulates error bursts on each FDMDV carrier from HF multipath. Useful for
- testing error protection schemes.
-
-\*---------------------------------------------------------------------------*/
-
-/*
- Copyright (C) 2010 David Rowe
-
- All rights reserved.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License version 2.1, as
- published by the Free Software Foundation. This program is
- distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
- License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with this program; if not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "codec2.h"
-
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-
-#define SYMBOL_PERIOD 0.02
-
-int iterate_state(int state,
- int carrier,
- float t,
- float burst_length,
- float burst_offset)
-{
- int next_state = state;
-
- //printf("carrier: %2d state: %d t: %4.3f offset: %f\n", carrier, state, t, burst_offset);
-
- switch(state) {
- case 0:
-
- /* clear channel state - no bit errors */
-
- /* start of error burst in each carrier is shifted by
- burst_offset wrt previous carrier */
-
- if (t > burst_offset*(carrier+1))
- next_state = 1;
- break;
-
- case 1:
-
- /* burst error state - 50% bit error rate */
-
- if (t > (burst_offset*(carrier+1) + burst_length))
- next_state = 2;
- break;
-
- }
-
- return next_state;
-}
-
-
-int main(int argc, char *argv[])
-{
- FILE *fin;
- FILE *fout;
- unsigned short bits_in, bit;
- int i, nbits_in, nbits_out, n_carriers, bits_per_carrier;
- unsigned char byte, bits_out;
- int *state, carrier;
- float t, burst_length, burst_period, burst_offset, r;
- int errors,bits;
-
- if (argc < 7) {
- printf("%s InputBitFile OutputBitFile nCarriers BitsPerCarrier "
- "burstPeriod burstLength nextCarrierOffset\n", argv[0]);
- exit(1);
- }
-
- if (strcmp(argv[1], "-") == 0) fin = stdin;
- else if ( (fin = fopen(argv[1],"rb")) == NULL ) {
- fprintf(stderr, "Error opening input bit file: %s: %s.\n",
- argv[1], strerror(errno));
- exit(1);
- }
-
- if (strcmp(argv[2], "-") == 0) fout = stdout;
- else if ( (fout = fopen(argv[2],"wb")) == NULL ) {
- fprintf(stderr, "Error opening output speech file: %s: %s.\n",
- argv[2], strerror(errno));
- exit(1);
- }
-
- n_carriers = atoi(argv[3]);
- bits_per_carrier = atoi(argv[4]);
-
- burst_period = atof(argv[5]);
- burst_length = atof(argv[6]);
- burst_offset = atof(argv[7]);
-
- state = (int*)malloc(sizeof(int)*n_carriers);
- assert(state != NULL);
- for(i=0; i<n_carriers; i++)
- state[i] = 0;
-
- /* We have packed bits for input and output, which must be read as
- bytes. We would like to process these packed bits at the modem
- frame rate. e.g. for 1400 bit/s, the modem frame rate is 28
- bit/frame of 3.5 bytes.
-
- while !feof
- Read a byte
- while enough bits left
- apply burst error
-
- */
-
- t = 0.0;
- carrier = 0;
- nbits_in = 0;
- bits_in = 0;
- nbits_out = 0;
- bits_out = 0;
- errors = bits = 0;
- while(fread(&byte, sizeof(char), 1, fin) == 1) {
-
- /* insert latest byte into bits buffer, MSB is first in time order */
-
- bits_in <<= 8;
- bits_in |= (short)byte;
- nbits_in += 8;
-
- //printf("byte: 0x%x bits_in: 0x%x nbits_in: %d\n", byte, bits_in, nbits_in);
-
- while(nbits_in >= bits_per_carrier) {
-
- /* iterate error state for every carrier to see if this carrier is
- knocked out by a simulated fade */
-
- state[carrier] = iterate_state(state[carrier],
- carrier,
- t,
- burst_length, burst_offset);
-
- /* apply error model to bits in this carrier */
-
- for(i=0; i<bits_per_carrier; i++) {
-
- bit = (bits_in >> (nbits_in - 1)) & 0x1;
- nbits_in--;
- //printf("bit: %d\n", bit);
-
- bits++;
- if (state[carrier] == 1) {
- r = (float)rand()/RAND_MAX;
- if (r < 0.5) {
- bit ^= 1;
- errors++;
- fprintf(stderr, "e");
- }
- else
- fprintf(stderr, ".");
- }
- else
- fprintf(stderr, ".");
-
- /* pack processed bits and fwrite when we get a byte */
-
- bits_out |= bit;
- nbits_out++;
- if (nbits_out == 8) {
- //printf("bits_out: 0x%x\n", bits_out);
- fwrite(&bits_out, sizeof(char), 1, fout);
- nbits_out = 0;
- bits_out = 0;
- }
- else
- bits_out <<= 1;
-
- }
-
- /* move to next carrier */
-
- carrier++;
- fprintf(stderr, " ");
- if (carrier == n_carriers) {
- carrier = 0;
- t += SYMBOL_PERIOD;
- if (t > burst_period) {
- t = 0.0;
- for(i=0; i<n_carriers; i++)
- state[i] = 0;
- }
- fprintf(stderr, "\n");
- }
- }
- }
-
- fclose(fin);
- fclose(fout);
- free(state);
-
- fprintf(stderr,"ber: %4.3f\n", (float)errors/bits);
-
- return 0;
-}
projects / freetel-svn-tracking.git / commitdiff