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added reserved tones parameter

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This commit is contained in:
Ahmet Inan 2023-12-15 11:44:47 +01:00
commit ae4d601e96
1 changed files with 7 additions and 7 deletions
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14
encode.cc
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@ -182,7 +182,7 @@ struct Encoder
{
return PhaseShiftKeying<4, cmplx, code_type>::map(b);
}
Encoder(DSP::WritePCM<value> *pcm, const uint8_t *inp, int freq_off, uint64_t call_sign, int oper_mode) :
Encoder(DSP::WritePCM<value> *pcm, const uint8_t *inp, int freq_off, uint64_t call_sign, int oper_mode, int reserved_tones) :
pcm(pcm), crc0(0xA8F4), crc1(0x8F6E37A0), bchenc({
0b100011101, 0b101110111, 0b111110011, 0b101101001,
0b110111101, 0b111100111, 0b100101011, 0b111010111,
@ -195,7 +195,6 @@ struct Encoder
code_off = offset - cons_cols / 2;
mls0_off = offset - mls0_len + 1;
mls1_off = offset - mls1_len / 2;
int reserved_tones = 8;
value kern_fac = 1 / value(10 * reserved_tones);
for (int i = 0; i < reserved_tones / 2; ++i) {
fdom[bin(code_off-1-i)] = kern_fac;
@ -294,7 +293,8 @@ int main(int argc, char **argv)
return 1;
}
const int band_width = 1600;
const int reserved_tones = 8;
const int band_width = 1600 + (25 * reserved_tones) / 4;
if ((output_chan == 1 && freq_off < band_width / 2) || freq_off < band_width / 2 - output_rate / 2 || freq_off > output_rate / 2 - band_width / 2) {
std::cerr << "Unsupported frequency offset." << std::endl;
@ -336,16 +336,16 @@ int main(int argc, char **argv)
output_file.silence(output_rate);
switch (output_rate) {
case 8000:
delete new Encoder<value, cmplx, 8000>(&output_file, input_data, freq_off, call_sign, oper_mode);
delete new Encoder<value, cmplx, 8000>(&output_file, input_data, freq_off, call_sign, oper_mode, reserved_tones);
break;
case 16000:
delete new Encoder<value, cmplx, 16000>(&output_file, input_data, freq_off, call_sign, oper_mode);
delete new Encoder<value, cmplx, 16000>(&output_file, input_data, freq_off, call_sign, oper_mode, reserved_tones);
break;
case 44100:
delete new Encoder<value, cmplx, 44100>(&output_file, input_data, freq_off, call_sign, oper_mode);
delete new Encoder<value, cmplx, 44100>(&output_file, input_data, freq_off, call_sign, oper_mode, reserved_tones);
break;
case 48000:
delete new Encoder<value, cmplx, 48000>(&output_file, input_data, freq_off, call_sign, oper_mode);
delete new Encoder<value, cmplx, 48000>(&output_file, input_data, freq_off, call_sign, oper_mode, reserved_tones);
break;
default:
std::cerr << "Unsupported sample rate." << std::endl;