mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-09-10 07:06:34 -04:00
380 lines
9.4 KiB
C++
380 lines
9.4 KiB
C++
///////////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2021 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////////
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/*
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Bit interleaver
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Copyright 2018 Ahmet Inan <xdsopl@gmail.com>
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*/
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#ifndef INTERLEAVER_HH
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#define INTERLEAVER_HH
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namespace ldpctool {
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template <typename TYPE>
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struct Interleaver
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{
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virtual void fwd(TYPE *) = 0;
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virtual void bwd(TYPE *) = 0;
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virtual ~Interleaver() = default;
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};
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template <typename TYPE>
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struct ITL0 : public Interleaver<TYPE>
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{
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void fwd(TYPE *){}
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void bwd(TYPE *){}
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};
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template <typename TYPE, typename PITL, typename MUX>
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struct BITL : public Interleaver<TYPE>
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{
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static const int N = PITL::N;
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static const int COLS = MUX::N;
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static const int ROWS = N / COLS;
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TYPE tmp[N];
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void fwd(TYPE *io)
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{
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PITL::fwd(tmp, io);
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for (int row = 0; row < ROWS; ++row)
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MUX::fwd(io+COLS*row, tmp+row, ROWS);
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}
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void bwd(TYPE *io)
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{
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for (int row = 0; row < ROWS; ++row)
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MUX::bwd(tmp+row, io+COLS*row, ROWS);
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PITL::bwd(io, tmp);
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}
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};
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template <typename TYPE, int NUM>
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struct PITL0
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{
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static const int N = NUM;
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static void fwd(TYPE *out, TYPE *in)
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{
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for (int n = 0; n < N; ++n)
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out[n] = in[n];
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}
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static void bwd(TYPE *out, TYPE *in)
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{
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for (int n = 0; n < N; ++n)
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out[n] = in[n];
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}
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};
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template <typename TYPE, int NUM, int Q>
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struct PITL
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{
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static const int N = NUM;
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static const int M = 360;
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static const int K = N - M * Q;
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static void fwd(TYPE *out, TYPE *in)
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{
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for (int k = 0; k < K; ++k)
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out[k] = in[k];
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for (int q = 0; q < Q; ++q)
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for (int m = 0; m < M; ++m)
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out[K+M*q+m] = in[K+Q*m+q];
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}
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static void bwd(TYPE *out, TYPE *in)
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{
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for (int k = 0; k < K; ++k)
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out[k] = in[k];
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for (int q = 0; q < Q; ++q)
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for (int m = 0; m < M; ++m)
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out[K+Q*m+q] = in[K+M*q+m];
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}
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};
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template <typename TYPE, int NUM, int Q, typename CT>
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struct PCTITL
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{
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static const int N = NUM;
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static const int COLS = CT::N;
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static const int ROWS = N / COLS;
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static void fwd(TYPE *out, TYPE *in)
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{
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PITL<TYPE, N, Q>::fwd(out, in);
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for (int n = 0; n < N; ++n)
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in[n] = out[n];
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for (int row = 0; row < ROWS; ++row)
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CT::fwd(out+COLS*row, in, ROWS, row);
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}
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static void bwd(TYPE *out, TYPE *in)
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{
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for (int row = 0; row < ROWS; ++row)
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CT::bwd(out, in+COLS*row, ROWS, row);
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for (int n = 0; n < N; ++n)
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in[n] = out[n];
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PITL<TYPE, N, Q>::bwd(out, in);
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}
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};
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template <typename TYPE>
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struct MUX0
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{
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static const int N = 1;
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static void fwd(TYPE *out, TYPE *in, int)
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{
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out[0] = in[0];
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}
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static void bwd(TYPE *out, TYPE *in, int)
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{
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out[0] = in[0];
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}
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};
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template <typename TYPE, int E0, int E1, int E2>
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struct MUX3
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{
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static const int N = 3;
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static void fwd(TYPE *out, TYPE *in, int S)
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{
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out[E0] = in[0*S];
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out[E1] = in[1*S];
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out[E2] = in[2*S];
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}
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static void bwd(TYPE *out, TYPE *in, int S)
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{
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out[0*S] = in[E0];
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out[1*S] = in[E1];
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out[2*S] = in[E2];
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}
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};
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template <typename TYPE, int E0, int E1, int E2, int E3, int E4, int E5, int E6, int E7>
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struct MUX8
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{
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static const int N = 8;
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static void fwd(TYPE *out, TYPE *in, int S)
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{
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out[E0] = in[0*S];
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out[E1] = in[1*S];
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out[E2] = in[2*S];
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out[E3] = in[3*S];
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out[E4] = in[4*S];
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out[E5] = in[5*S];
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out[E6] = in[6*S];
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out[E7] = in[7*S];
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}
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static void bwd(TYPE *out, TYPE *in, int S)
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{
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out[0*S] = in[E0];
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out[1*S] = in[E1];
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out[2*S] = in[E2];
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out[3*S] = in[E3];
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out[4*S] = in[E4];
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out[5*S] = in[E5];
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out[6*S] = in[E6];
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out[7*S] = in[E7];
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}
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};
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template <typename TYPE, int E0, int E1, int E2, int E3, int E4, int E5, int E6, int E7, int E8, int E9, int E10, int E11>
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struct MUX12
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{
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static const int N = 12;
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static void fwd(TYPE *out, TYPE *in, int S)
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{
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out[E0] = in[0*S];
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out[E1] = in[1*S];
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out[E2] = in[2*S];
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out[E3] = in[3*S];
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out[E4] = in[4*S];
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out[E5] = in[5*S];
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out[E6] = in[6*S];
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out[E7] = in[7*S];
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out[E8] = in[8*S];
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out[E9] = in[9*S];
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out[E10] = in[10*S];
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out[E11] = in[11*S];
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}
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static void bwd(TYPE *out, TYPE *in, int S)
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{
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out[0*S] = in[E0];
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out[1*S] = in[E1];
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out[2*S] = in[E2];
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out[3*S] = in[E3];
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out[4*S] = in[E4];
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out[5*S] = in[E5];
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out[6*S] = in[E6];
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out[7*S] = in[E7];
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out[8*S] = in[E8];
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out[9*S] = in[E9];
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out[10*S] = in[E10];
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out[11*S] = in[E11];
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}
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};
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template <typename TYPE, int E0, int E1, int E2, int E3, int E4, int E5, int E6, int E7, int E8, int E9, int E10, int E11, int E12, int E13, int E14, int E15>
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struct MUX16
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{
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static const int N = 16;
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static void fwd(TYPE *out, TYPE *in, int S)
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{
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out[E0] = in[0*S];
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out[E1] = in[1*S];
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out[E2] = in[2*S];
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out[E3] = in[3*S];
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out[E4] = in[4*S];
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out[E5] = in[5*S];
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out[E6] = in[6*S];
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out[E7] = in[7*S];
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out[E8] = in[8*S];
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out[E9] = in[9*S];
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out[E10] = in[10*S];
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out[E11] = in[11*S];
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out[E12] = in[12*S];
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out[E13] = in[13*S];
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out[E14] = in[14*S];
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out[E15] = in[15*S];
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}
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static void bwd(TYPE *out, TYPE *in, int S)
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{
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out[0*S] = in[E0];
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out[1*S] = in[E1];
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out[2*S] = in[E2];
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out[3*S] = in[E3];
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out[4*S] = in[E4];
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out[5*S] = in[E5];
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out[6*S] = in[E6];
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out[7*S] = in[E7];
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out[8*S] = in[E8];
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out[9*S] = in[E9];
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out[10*S] = in[E10];
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out[11*S] = in[E11];
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out[12*S] = in[E12];
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out[13*S] = in[E13];
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out[14*S] = in[E14];
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out[15*S] = in[E15];
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}
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};
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template <typename TYPE, int T0, int T1, int T2, int T3, int T4, int T5, int T6, int T7>
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struct CT8
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{
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static const int N = 8;
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static void fwd(TYPE *out, TYPE *in, int S, int R)
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{
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out[0] = in[0*S+(R+S-T0)%S];
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out[1] = in[1*S+(R+S-T1)%S];
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out[2] = in[2*S+(R+S-T2)%S];
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out[3] = in[3*S+(R+S-T3)%S];
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out[4] = in[4*S+(R+S-T4)%S];
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out[5] = in[5*S+(R+S-T5)%S];
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out[6] = in[6*S+(R+S-T6)%S];
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out[7] = in[7*S+(R+S-T7)%S];
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}
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static void bwd(TYPE *out, TYPE *in, int S, int R)
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{
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out[0*S+(R+S-T0)%S] = in[0];
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out[1*S+(R+S-T1)%S] = in[1];
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out[2*S+(R+S-T2)%S] = in[2];
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out[3*S+(R+S-T3)%S] = in[3];
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out[4*S+(R+S-T4)%S] = in[4];
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out[5*S+(R+S-T5)%S] = in[5];
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out[6*S+(R+S-T6)%S] = in[6];
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out[7*S+(R+S-T7)%S] = in[7];
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}
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};
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template <typename TYPE, int T0, int T1, int T2, int T3, int T4, int T5, int T6, int T7, int T8, int T9, int T10, int T11>
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struct CT12
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{
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static const int N = 12;
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static void fwd(TYPE *out, TYPE *in, int S, int R)
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{
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out[0] = in[0*S+(R+S-T0)%S];
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out[1] = in[1*S+(R+S-T1)%S];
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out[2] = in[2*S+(R+S-T2)%S];
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out[3] = in[3*S+(R+S-T3)%S];
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out[4] = in[4*S+(R+S-T4)%S];
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out[5] = in[5*S+(R+S-T5)%S];
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out[6] = in[6*S+(R+S-T6)%S];
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out[7] = in[7*S+(R+S-T7)%S];
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out[8] = in[8*S+(R+S-T8)%S];
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out[9] = in[9*S+(R+S-T9)%S];
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out[10] = in[10*S+(R+S-T10)%S];
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out[11] = in[11*S+(R+S-T11)%S];
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}
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static void bwd(TYPE *out, TYPE *in, int S, int R)
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{
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out[0*S+(R+S-T0)%S] = in[0];
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out[1*S+(R+S-T1)%S] = in[1];
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out[2*S+(R+S-T2)%S] = in[2];
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out[3*S+(R+S-T3)%S] = in[3];
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out[4*S+(R+S-T4)%S] = in[4];
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out[5*S+(R+S-T5)%S] = in[5];
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out[6*S+(R+S-T6)%S] = in[6];
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out[7*S+(R+S-T7)%S] = in[7];
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out[8*S+(R+S-T8)%S] = in[8];
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out[9*S+(R+S-T9)%S] = in[9];
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out[10*S+(R+S-T10)%S] = in[10];
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out[11*S+(R+S-T11)%S] = in[11];
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}
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};
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template <typename TYPE, int T0, int T1, int T2, int T3, int T4, int T5, int T6, int T7, int T8, int T9, int T10, int T11, int T12, int T13, int T14, int T15>
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struct CT16
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{
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static const int N = 16;
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static void fwd(TYPE *out, TYPE *in, int S, int R)
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{
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out[0] = in[0*S+(R+S-T0)%S];
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out[1] = in[1*S+(R+S-T1)%S];
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out[2] = in[2*S+(R+S-T2)%S];
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out[3] = in[3*S+(R+S-T3)%S];
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out[4] = in[4*S+(R+S-T4)%S];
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out[5] = in[5*S+(R+S-T5)%S];
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out[6] = in[6*S+(R+S-T6)%S];
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out[7] = in[7*S+(R+S-T7)%S];
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out[8] = in[8*S+(R+S-T8)%S];
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out[9] = in[9*S+(R+S-T9)%S];
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out[10] = in[10*S+(R+S-T10)%S];
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out[11] = in[11*S+(R+S-T11)%S];
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out[12] = in[12*S+(R+S-T12)%S];
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out[13] = in[13*S+(R+S-T13)%S];
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out[14] = in[14*S+(R+S-T14)%S];
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out[15] = in[15*S+(R+S-T15)%S];
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}
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static void bwd(TYPE *out, TYPE *in, int S, int R)
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{
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out[0*S+(R+S-T0)%S] = in[0];
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out[1*S+(R+S-T1)%S] = in[1];
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out[2*S+(R+S-T2)%S] = in[2];
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out[3*S+(R+S-T3)%S] = in[3];
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out[4*S+(R+S-T4)%S] = in[4];
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out[5*S+(R+S-T5)%S] = in[5];
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out[6*S+(R+S-T6)%S] = in[6];
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out[7*S+(R+S-T7)%S] = in[7];
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out[8*S+(R+S-T8)%S] = in[8];
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out[9*S+(R+S-T9)%S] = in[9];
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out[10*S+(R+S-T10)%S] = in[10];
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out[11*S+(R+S-T11)%S] = in[11];
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out[12*S+(R+S-T12)%S] = in[12];
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out[13*S+(R+S-T13)%S] = in[13];
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out[14*S+(R+S-T14)%S] = in[14];
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out[15*S+(R+S-T15)%S] = in[15];
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}
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};
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} // namespace ldpctool
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#endif
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