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compute descrambled constellations only once

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Ahmet Inan 2021-06-13 11:50:55 +02:00
commit 5f4c2cdba9
2 changed files with 39 additions and 58 deletions
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7
encode.cc
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@ -31,7 +31,8 @@ struct Encoder
static const int code_bits = 64800;
static const int data_bits = code_bits - 32 - 12 * 16 - 21600;
static const int code_cols = 432;
static const int code_rows = code_bits / code_cols / Mod::BITS;
static const int cons_cnt = code_bits / Mod::BITS;
static const int code_rows = cons_cnt / code_cols;
static const int mls0_len = 127;
static const int mls0_poly = 0b10001001;
static const int mls1_len = 255;
@ -140,9 +141,9 @@ struct Encoder
}
void interleave()
{
for (int i = 0; i < code_bits/Mod::BITS; ++i)
for (int i = 0; i < cons_cnt; ++i)
for (int k = 0; k < Mod::BITS; ++k)
bint[Mod::BITS*i+k] = code[(code_bits/Mod::BITS)*k+i];
bint[Mod::BITS*i+k] = code[cons_cnt*k+i];
}
Encoder(DSP::WritePCM<value> *pcm, uint8_t *inp, int freq_off, uint64_t call_sign) :
pcm(pcm), crc0(0xA8F4), crc1(0xD419CC15), bchenc0({