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trimmed modes to free some bits in first symbol

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This commit is contained in:
Ahmet Inan 2025-07-13 08:23:34 +02:00
commit 34abccdf6e
7 changed files with 32 additions and 224 deletions
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13
encode.cc
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@ -207,12 +207,7 @@ struct Encoder : public Common
}
void shuffle(code_type *dest, const code_type *src)
{
if (code_order == 11) {
CODE::XorShiftMask<int, 11, 1, 3, 4, 1> seq;
dest[0] = src[0];
for (int i = 1; i < 2048; ++i)
dest[i] = src[seq()];
} else if (code_order == 12) {
if (code_order == 12) {
CODE::XorShiftMask<int, 12, 1, 1, 4, 1> seq;
dest[0] = src[0];
for (int i = 1; i < 4096; ++i)
@ -290,9 +285,9 @@ struct Encoder : public Common
tone[i] = nrz(seq1());
} else {
int bits = mod_bits;
if (oper_mode >= 7 && oper_mode <= 9 && k % 32 == 30)
if (oper_mode == 2 && k % 32 == 30)
bits = 2;
if (oper_mode >= 21 && oper_mode <= 23 && k % 64 == 60)
if (oper_mode == 6 && k % 64 == 60)
bits = 4;
tone[i] = map_bits(perm+k, bits);
k += bits;
@ -328,7 +323,7 @@ int main(int argc, char **argv)
}
int input_count = argc - 7;
int oper_mode = std::atoi(argv[6]);
if (oper_mode < 0 || oper_mode > 27) {
if (oper_mode < 0 || oper_mode > 7) {
std::cerr << "Unsupported operation mode." << std::endl;
return 1;
}