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/*---------------------------------------------------------------------------*\
FILE........: tfreedv_2400B_rawdata.c
AUTHOR......: Jeroen Vreeken
DATE CREATED: 24 May 2020
FreeDV 2400B rawdata test.
\*---------------------------------------------------------------------------*/
/*
Copyright (C) 2020 Jeroen Vreeken <[email protected]>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser 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 <stdio.h>
#include "assert.h"
#include "freedv_api.h"
int main(int argc, char **argv) {
struct freedv *f;
int i;
printf("freedv_api tests for mode 2400B\n");
printf("freedv_open(FREEDV_MODE_2400B) ");
f = freedv_open(FREEDV_MODE_2400B);
assert(f != NULL);
printf("Passed\n");
printf("freedv_get_mode() ");
int mode = freedv_get_mode(f);
assert(mode == FREEDV_MODE_2400B);
printf("Passed\n");
printf("freedv_get_n_max_modem_samples() ");
int max_samples = freedv_get_n_max_modem_samples(f);
assert(max_samples == 1930);
printf("%d Passed\n", max_samples);
printf("freedv_get_n_nom_modem_samples() ");
int nom_samples = freedv_get_n_nom_modem_samples(f);
assert(nom_samples == 1920);
printf("%d Passed\n", nom_samples);
printf("freedv_get_n_speech_samples() ");
int speech_samples = freedv_get_n_speech_samples(f);
assert(speech_samples == 320);
printf("%d Passed\n", speech_samples);
printf("freedv_get_n_bits_per_codec_frame() ");
int codec_bits = freedv_get_bits_per_codec_frame(f);
assert(codec_bits == 52);
printf("%d Passed\n", codec_bits);
printf("freedv_get_n_bits_per_modem_frame() ");
int frame_bits = freedv_get_bits_per_modem_frame(f);
assert(frame_bits == 52);
printf("%d Passed\n", frame_bits);
printf("freedv_rawdatatx()/freedv_rawdatarx() ");
int frames = 0;
{
short mod[nom_samples * 10];
/* Note: A codec frame is only 6.5 bytes!
so the seventh byte will be half empty!
*/
unsigned char payload[7] = {0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x70};
for (i = 0; i < 10; i++) {
freedv_rawdatatx(f, mod + i * nom_samples, payload);
}
int nin = 0;
for (i = 0; i < nom_samples * 9; i += nin) {
nin = freedv_nin(f);
unsigned char payload_rx[7] = {0};
int r = freedv_rawdatarx(f, payload_rx, mod + i);
if (r) {
int b;
for (b = 0; b < 7; b++) {
if (payload[b] != payload_rx[b]) {
printf("Received codec bits 0x%02x do not match expected 0x%02x\n",
payload_rx[b], payload[b]);
}
}
frames++;
}
}
}
if (!frames) {
printf("Did not decode any frames successfully\n");
goto fail;
}
printf("Tests passed\n");
return 0;
fail:
printf("Test failed\n");
return 1;
}
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