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Diffstat (limited to 'system/embdrv/lc3_dec/Decoder/ResidualSpectrum.cpp')
| -rw-r--r-- | system/embdrv/lc3_dec/Decoder/ResidualSpectrum.cpp | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/system/embdrv/lc3_dec/Decoder/ResidualSpectrum.cpp b/system/embdrv/lc3_dec/Decoder/ResidualSpectrum.cpp deleted file mode 100644 index 55453ad32f..0000000000 --- a/system/embdrv/lc3_dec/Decoder/ResidualSpectrum.cpp +++ /dev/null @@ -1,193 +0,0 @@ -/* - * ResidualSpectrum.cpp - * - * Copyright 2021 HIMSA II K/S - www.himsa.com. Represented by EHIMA - - * www.ehima.com - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include "ResidualSpectrum.hpp" - -#include <cmath> - -#include "BitReader.hpp" - -namespace Lc3Dec { - -ResidualSpectrum::ResidualSpectrum(uint16_t NE_) - : NE(NE_), X_hat_q_residual(nullptr), nResBits(0) { - X_hat_q_residual = new double[NE]; -} - -ResidualSpectrum::~ResidualSpectrum() { delete[] X_hat_q_residual; } - -void ResidualSpectrum::run( - const uint8_t* bytes, uint16_t& bp_side, uint8_t& mask_side, - const uint16_t lastnz, const int16_t* const X_hat_q_ari, - uint16_t const nbits_residual, // the const is implementation dependent and - // thus not repeated in header declaration - uint8_t* save_lev, const uint8_t& lsbMode, uint16_t& nf_seed, - uint16_t& zeroFrame, const int16_t gg_ind, int16_t F_NF) { - // 3.4.2.6 Residual data and finalization (d09r02_F2F) - /* Decode residual bits */ - for (uint16_t k = 0; k < lastnz; k++) { - X_hat_q_residual[k] = X_hat_q_ari[k]; - } - // for (k = lastnz; k < 𝑁𝐸; k++) - for (uint16_t k = lastnz; k < NE; k++) { - //𝑋𝑞 ̂[k] = 0; - X_hat_q_residual[k] = 0; - } - uint8_t resBits[nbits_residual]; - uint16_t remaining_nbits_residual = - nbits_residual; // changed relative to specification to ensure const - // input into array allocation - nResBits = 0; - if (lsbMode == 0) { - // for (k = 0; k < 𝑁𝐸; k++) - for (uint16_t k = 0; k < NE; k++) { - // if (𝑋𝑞 ̂[k] != 0) - if (X_hat_q_residual[k] != 0) { - if (nResBits == remaining_nbits_residual) { - break; - } - resBits[nResBits++] = read_bit(bytes, &bp_side, &mask_side); - } - } - } else { - for (uint16_t k = 0; k < lastnz; k += 2) { - if (save_lev[k] > 0) { - if (remaining_nbits_residual == 0) { - break; - } - uint8_t bit = read_bit(bytes, &bp_side, &mask_side); - remaining_nbits_residual--; - if (bit == 1) { - // if (𝑋𝑞 ̂[k] > 0) - if (X_hat_q_residual[k] > 0) { - //𝑋𝑞 ̂[k] += 1; - X_hat_q_residual[k] += 1; - } - // else if (𝑋𝑞 ̂[k] < 0) - else if (X_hat_q_residual[k] < 0) { - //𝑋𝑞 ̂[k] -= 1; - X_hat_q_residual[k] -= 1; - } else { - if (remaining_nbits_residual == 0) { - break; - } - bit = read_bit(bytes, &bp_side, &mask_side); - remaining_nbits_residual--; - if (bit == 0) { - //𝑋𝑞 ̂[k] = 1; - X_hat_q_residual[k] = 1; - } else { - //𝑋𝑞 ̂[k] = -1; - X_hat_q_residual[k] = -1; - } - } - } - if (remaining_nbits_residual == 0) { - break; - } - bit = read_bit(bytes, &bp_side, &mask_side); - remaining_nbits_residual--; - if (bit == 1) { - // if (𝑋𝑞 ̂[k+1] > 0) - if (X_hat_q_residual[k + 1] > 0) { - //𝑋𝑞 ̂[k+1] += 1; - X_hat_q_residual[k + 1] += 1; - } - // else if (𝑋𝑞 ̂[k+1] < 0) - else if (X_hat_q_residual[k + 1] < 0) { - //𝑋𝑞 ̂[k+1] -= 1; - X_hat_q_residual[k + 1] -= 1; - } else { - if (remaining_nbits_residual == 0) { - break; - } - bit = read_bit(bytes, &bp_side, &mask_side); - remaining_nbits_residual--; - if (bit == 0) { - //𝑋𝑞 ̂[k+1] = 1; - X_hat_q_residual[k + 1] = 1; - } else { - //𝑋𝑞 ̂[k+1] = -1; - X_hat_q_residual[k + 1] = -1; - } - } - } - } - } - } - - /* Noise Filling Seed */ - int16_t tmp = 0; - // for (k = 0; k < 𝑁𝐸; k++) - for (uint16_t k = 0; k < NE; k++) { - // tmp += abs(𝑋𝑞 ̂[k]) * k; - tmp += abs(X_hat_q_residual[k]) * k; - } - nf_seed = tmp & 0xFFFF; /* Note that both tmp and nf_seed are 32-bit int*/ - /* Zero frame flag */ - // if (lastnz == 2 && 𝑋𝑞 ̂[0] == 0 && 𝑋𝑞 ̂[1] == 0 && 𝑔𝑔𝑖𝑛𝑑 == 0 && 𝐹𝑁𝐹 == 7) - if ((lastnz == 2) && (X_hat_q_residual[0] == 0.0) && - (X_hat_q_residual[1] == 0.0) && (gg_ind == 0) && (F_NF == 7)) { - zeroFrame = 1; - } else { - zeroFrame = 0; - } - - // 3.4.3 Residual decoding (d09r02_F2F) - // Residual decoding is performed only when lsbMode is 0. - if (lsbMode == 0) { - uint16_t k, n; - k = n = 0; - // while (k < 𝑁𝐸 && n < nResBits) - while (k < NE && n < nResBits) { - // if (𝑋𝑞 ̂[k] != 0) - if (X_hat_q_residual[k] != 0) { - if (resBits[n++] == 0) { - // if (𝑋𝑞 ̂[k] > 0) - if (X_hat_q_residual[k] > 0) { - //𝑋𝑞 ̂[k] -= 0.1875; - X_hat_q_residual[k] -= 0.1875; - } else { - //𝑋𝑞 ̂[k] -= 0.3125; - X_hat_q_residual[k] -= 0.3125; - } - } else { - // if (𝑋𝑞 ̂[k] > 0) - if (X_hat_q_residual[k] > 0) { - //𝑋𝑞 ̂[k] += 0.3125; - X_hat_q_residual[k] += 0.3125; - } else { - //𝑋𝑞 ̂[k] += 0.1875; - X_hat_q_residual[k] += 0.1875; - } - } - } - k++; - } - } -} - -void ResidualSpectrum::registerDatapoints(DatapointContainer* datapoints) { - if (nullptr != datapoints) { - datapoints->addDatapoint("X_hat_q_residual", &X_hat_q_residual[0], - sizeof(double) * NE); - } -} - -} // namespace Lc3Dec |