H223ALReceiver::H223ALReceiver(H223ChannelInfo *nfo)
{
outgoing_data = mkbuffer(MAX_AL_BUFFER_SIZE, sizeof(byte));
incoming_data = mkbuffer(MAX_AL_BUFFER_SIZE, sizeof(byte));
type = nfo->type;
framed = nfo->framed;
seq_num = nfo->seq_num;
rcpc_code = nfo->rcpc_code;
rcpc_rate = nfo->rcpc_rate;
crc_bytes = nfo->crc_bytes;
old_threshold = nfo->old_threshold;
/* Initialize other parameters */
max_arq = DEF_MAX_ARQ;
last_recd = 31;
last_written = 31;
initialized = 0;
bad_payloads = 0;
}
int
main(int argc, char *argv[])
{
FILE *fd1;
FILE *fd2;
wave_t *wave1;
wave_t *wave2;
buffer_t *buffer1;
buffer_t *buffer2;
int bytesread;
int length = 512;
if (argc < 2) {
fprintf(stderr, "Usage: %s <file>\n", argv[0]);
exit(EXIT_FAILURE);
}
// LOAD wave to compare with Square1.wav
if (!(fd1 = fopen(argv[1], "rb"))) {
fprintf(stderr, "Couldn't open \"%s\".\n", argv[1]);
exit(EXIT_FAILURE);
}
if (!(wave2 = waveopen(fd1))) {
fprintf(stderr, "Couldn't open \"%s\" as a .wav file.\n", argv[1]);
exit(EXIT_FAILURE);
}
// LOAD Pulse1.wav
if (!(fd2 = fopen("./wavs/Pulse1.wav", "rb"))) {
fprintf(stderr, "Couldn't open \"%s\".\n", "Square1.wav");
exit(EXIT_FAILURE);
}
if (!(wave1 = waveopen(fd2))) {
fprintf(stderr, "Couldn't open \"%s\" as a .wav file.\n", argv[1]);
exit(EXIT_FAILURE);
}
wavegetprop(wave1, WAVE_LENGTH, &length);
//length = 16;
buffer1 = mkbuffer(wave1, length);
buffer2 = mkbuffer(wave2, length);
if (!(bytesread = getpcm(wave1, buffer1))) {
fprintf(stderr, "Couldn't stream pcm data!\n");
exit(EXIT_FAILURE);
}
if (!(bytesread = getpcm(wave2, buffer2))) {
fprintf(stderr, "Couldn't stream pcm data!\n");
exit(EXIT_FAILURE);
}
char2double(wave1, buffer1);
char2double(wave2, buffer2);
/*int16_t **sample;
sample = (int16_t **)buffer->pcm;
for(int i = 0; i < buffer->length; i++){
printf("sample %d = %i \n", i, sample[0][i]);
}*/
print_waveinfo(wave1);
/* Test signal processing routines
--------------------------------------------------------------*/
printf("\nSIGNAL PROCESSING RESULTS:\n");
double **R = xcorr(0, buffer1, buffer2);
qsort(R[1], 2*length - 1, sizeof(double), doublecmp);
printf("max xcorr o/p = %f \n", R[1][2*length-2]);
/* for(int i = 1024 - 300; i < 1024 + 300; i++)
printf("index %d R=%f @ lag = %f \n", i, R[1][i],R[0][i]);
look at the output and lag 100 should have R ~= 1;*/
/* clean up mem allocs */
free(R[0]);
free(R[1]);
free(R);
rmbuffer(wave1, buffer1);
rmbuffer(wave2, buffer2);
waveclose(wave1);
waveclose(wave2);
fclose(fd1);
fclose(fd2);
return 0;
}
