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/*------------------------------------------------------
FILE........: tst_codec2_dec.c
AUTHOR......: David Rowe, Don Reid
DATE CREATED: 30 May 2013, Oct 2018
Test Codec 2 decoding on the STM32F4.
-------------------------------------------------------*/
/*
Copyright (C) 2014 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/>.
*/
/* Typical run, using internal testframes:
# Input
# Copy N frames of a raw audio file to stm_in.raw.
dd bs=2560 count=30 if=../../../../raw/hts1.raw of=spch_in.raw
c2enc 700C spch_in.raw stm_in.raw
# Reference
c2dec 700C stm_in.raw ref_dec.raw
# Create config
echo "81000000" > stm_cfg.txt
# Run stm32
run_stm32_prog ../../src/tst_codec2_dec.elf --load
# Compare outputs
compare_ints -s -b 2 ref_dec.raw stm_out.raw
# Manual play (and listen)
aplay -f S16_LE ref_dec.raw
#
aplay -f S16_LE stm_out.raw
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <math.h>
#include <errno.h>
#include <assert.h>
#include "codec2.h"
#include "semihosting.h"
#include "stm32f4xx_conf.h"
#include "stm32f4xx.h"
#include "machdep.h"
static char fin_buffer[1024];
static __attribute__ ((section (".ccm"))) char fout_buffer[4*8192];
int main(int argc, char *argv[]) {
int f_cfg;
int frame;
void *codec2;
short *buf;
unsigned char *bits;
int nsam, nbit, nbyte;
semihosting_init();
////////
// Test configuration, read from stm_cfg.txt
int config_mode; // 0
int config_gray; // 1
//int config_verbose; // 6
//int config_profile; // 7
char config[8];
f_cfg = open("stm_cfg.txt", O_RDONLY);
if (f_cfg == -1) {
fprintf(stderr, "Error opening config file\n");
exit(1);
}
if (read(f_cfg, &config[0], 8) != 8) {
fprintf(stderr, "Error reading config file\n");
exit(1);
}
config_mode = config[0] - '0';
config_gray = config[1] - '0';
//config_verbose = config[6] - '0';
//config_profile = config[7] - '0';
close(f_cfg);
////////
// Setup
codec2 = codec2_create(config_mode);
assert(codec2 != NULL);
codec2_set_natural_or_gray(codec2, config_gray);
nsam = codec2_samples_per_frame(codec2);
nbit = codec2_bits_per_frame(codec2);
buf = (short*)malloc(nsam*sizeof(short));
nbyte = (nbit + 7) / 8;
bits = (unsigned char*)malloc(nbyte*sizeof(char));
////////
// Streams
FILE* fin = fopen("stm_in.raw", "rb");
if (fin == NULL) {
perror("Error opening input file\n");
exit(1);
}
setvbuf(fin, fin_buffer,_IOFBF,sizeof(fin_buffer));
FILE *fout = fopen("stm_out.raw", "wb" );
if (fout == NULL) {
perror("Error opening output file\n");
exit(1);
}
setvbuf(fout, fout_buffer,_IOFBF,sizeof(fout_buffer));
frame = 0;
////////
// Main loop
int bytes_per_frame = (sizeof(char) * nbyte);
while (fread(bits, 1, bytes_per_frame, fin) == (size_t)bytes_per_frame) {
codec2_decode_ber(codec2, buf, bits, 0.0);
fwrite(buf, sizeof(short) , nsam, fout);
frame ++;
}
fclose(fin);
fclose(fout);
printf("\nEnd of Test\n");
fclose(stdout);
fclose(stderr);
}
/* vi:set ts=4 et sts=4: */
|
