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add a converter for cf32 (gnuradio output format)

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Chris Kuethe
2016-01-10 17:17:43 -08:00
parent 879b467872
commit c204fae5e6
1 changed files with 21 additions and 3 deletions
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24
src/rtl_433.c
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@@ -110,6 +110,7 @@ void usage(r_device *devices) {
"\t\t 0 = Raw I/Q samples (uint8, 2 channel)\n"
"\t\t 1 = AM demodulated samples (int16 pcm, 1 channel)\n"
"\t\t 2 = FM demodulated samples (int16) (experimental)\n"
"\t\t 3 = Raw I/Q samples (cf32, 2 channel)\n"
"\t\t Note: If output file is specified, input will always be I/Q\n"
"\t[-F] kv|json|csv Produce decoded output in given format. Not yet supported by all drivers.\n"
"\t[<filename>] Save data stream to output file (a '-' dumps samples to stdout)\n\n",
@@ -1048,6 +1049,7 @@ int main(int argc, char **argv) {
if (in_filename) {
int i = 0;
unsigned char test_mode_buf[DEFAULT_BUF_LENGTH];
float test_mode_float_buf[DEFAULT_BUF_LENGTH];
if (strcmp(in_filename, "-") == 0) { /* read samples from stdin */
in_file = stdin;
in_filename = "<stdin>";
@@ -1060,14 +1062,30 @@ int main(int argc, char **argv) {
}
if (!quiet_mode) {
fprintf(stderr, "Test mode active. Reading samples from file: %s\n", in_filename);
fprintf(stderr, "Input format: %s\n", demod->debug_mode?"cf32":"uint8");
}
sample_file_pos = 0.0;
int n_read;
while ((n_read = fread(test_mode_buf, 1, 131072, in_file)) != 0) {
int n_read, cf32_tmp;
do {
if (demod->debug_mode) {
n_read = fread(test_mode_float_buf, sizeof(float), 131072, in_file);
for(int n = 0; n < n_read; n++) {
cf32_tmp = test_mode_float_buf[n]*127 + 127;
if (cf32_tmp < 0)
cf32_tmp = 0;
else if (cf32_tmp > 255)
cf32_tmp = 255;
test_mode_buf[n] = (uint8_t)cf32_tmp;
}
} else {
n_read = fread(test_mode_buf, 1, 131072, in_file);
}
rtlsdr_callback(test_mode_buf, n_read, demod);
i++;
sample_file_pos = (float)i * n_read / samp_rate;
}
} while (n_read != 0);
// Call a last time with cleared samples to ensure EOP detection
memset(test_mode_buf, 128, DEFAULT_BUF_LENGTH); // 128 is 0 in unsigned data