/****************************************************************************** * * * Copyright (C) 2018 The Android Open Source Project * * 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. * ***************************************************************************** * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore */ #include #include "ixheaac_type_def.h" #include "ixheaacd_bitbuffer.h" #include "ixheaacd_common_rom.h" #include "ixheaacd_sbrdecsettings.h" #include "ixheaacd_sbr_scale.h" #include "ixheaacd_env_extr_part.h" #include "ixheaacd_sbr_rom.h" #include "ixheaacd_hybrid.h" #include "ixheaacd_ps_dec.h" #include "ixheaacd_config.h" #include "ixheaacd_qmf_dec.h" #include "ixheaacd_mps_polyphase.h" #include "ixheaac_constants.h" #include "ixheaacd_mps_struct_def.h" #include "ixheaacd_mps_res_rom.h" #include "ixheaacd_mps_aac_struct.h" #include "ixheaacd_mps_dec.h" #include "ixheaac_basic_ops32.h" #include "ixheaac_basic_ops40.h" #include "ixheaacd_mps_macro_def.h" #include "ixheaacd_mps_basic_op.h" extern const FLOAT32 ixheaacd_ia_mps_hyb_filter_coeff_8[QMF_HYBRID_FILT_ORDER]; extern const FLOAT32 ixheaacd_mps_hyb_filter_coeff_2[QMF_HYBRID_FILT_ORDER]; extern const FLOAT32 ixheaacd_sine[8][8]; extern const FLOAT32 ixheaacd_cosine[8][8]; static VOID ixheaacd_mps_hyb_filt_type1(ia_cmplx_flt_struct *input, ia_cmplx_flt_struct output[8][MAX_TIME_SLOTS], WORD32 num_samples, const FLOAT32 *filt_coeff) { WORD32 i, n, q; FLOAT32 in_re, in_im; FLOAT32 coeff; FLOAT32 acc_re_l, acc_re_h, acc_im_l, acc_im_h; for (i = 0; i < num_samples; i++) { FLOAT32 x0_re[13], x0_im[13], x0_1_re[8], x0_1_im[8]; FLOAT32 acc_re_val[8], acc_im_val[8]; for (n = 0; n < QMF_HYBRID_FILT_ORDER; n++) { in_re = input[n + i].re; in_im = input[n + i].im; coeff = filt_coeff[QMF_HYBRID_FILT_ORDER - 1 - n]; x0_re[n] = coeff * in_re; x0_im[n] = coeff * in_im; } x0_1_re[0] = x0_re[6]; x0_1_im[0] = x0_im[6]; x0_1_re[1] = x0_re[7]; x0_1_im[1] = x0_im[7]; x0_1_re[2] = x0_re[8] - x0_re[0]; x0_1_im[2] = x0_im[8] - x0_im[0]; x0_1_re[3] = x0_re[9] - x0_re[1]; x0_1_im[3] = x0_im[9] - x0_im[1]; x0_1_re[4] = x0_re[10] - x0_re[2]; x0_1_im[4] = x0_im[10] - x0_im[2]; x0_1_re[5] = x0_re[11] - x0_re[3]; x0_1_im[5] = x0_im[11] - x0_im[3]; x0_1_re[6] = x0_re[12] - x0_re[4]; x0_1_im[6] = x0_im[12] - x0_im[4]; x0_1_re[7] = -(x0_re[5]); x0_1_im[7] = -(x0_im[5]); acc_re_val[0] = x0_1_re[0]; acc_re_val[1] = x0_1_re[1] - x0_1_re[7]; acc_re_val[2] = x0_1_re[2] - x0_1_re[6]; acc_re_val[3] = x0_1_re[3] - x0_1_re[5]; acc_re_val[4] = x0_1_im[1] + x0_1_im[7]; acc_re_val[5] = x0_1_im[2] + x0_1_im[6]; acc_re_val[6] = x0_1_im[3] + x0_1_im[5]; acc_re_val[7] = x0_1_im[4]; acc_im_val[0] = x0_1_im[0]; acc_im_val[1] = x0_1_im[1] - x0_1_im[7]; acc_im_val[2] = x0_1_im[2] - x0_1_im[6]; acc_im_val[3] = x0_1_im[3] - x0_1_im[5]; acc_im_val[4] = x0_1_re[1] + x0_1_re[7]; acc_im_val[5] = x0_1_re[2] + x0_1_re[6]; acc_im_val[6] = x0_1_re[3] + x0_1_re[5]; acc_im_val[7] = x0_1_re[4]; for (q = 0; q < 4; q++) { acc_re_l = 0; acc_im_l = 0; acc_re_h = 0; acc_im_h = 0; acc_re_l += acc_re_val[0]; acc_re_l += acc_re_val[1] * ixheaacd_cosine[q][1]; acc_re_l += acc_re_val[2] * ixheaacd_cosine[q][2]; acc_re_l += acc_re_val[3] * ixheaacd_cosine[q][3]; acc_re_h = acc_re_l; acc_re_l -= acc_re_val[4] * ixheaacd_sine[q][1]; acc_re_l -= acc_re_val[5] * ixheaacd_sine[q][2]; acc_re_l -= acc_re_val[6] * ixheaacd_sine[q][3]; acc_re_l -= acc_re_val[7] * ixheaacd_sine[q][4]; acc_re_h = acc_re_h - (acc_re_l - acc_re_h); acc_im_l += acc_im_val[0]; acc_im_l += acc_im_val[1] * ixheaacd_cosine[q][1]; acc_im_l += acc_im_val[2] * ixheaacd_cosine[q][2]; acc_im_l += acc_im_val[3] * ixheaacd_cosine[q][3]; acc_im_h = acc_im_l; acc_im_l += acc_im_val[4] * ixheaacd_sine[q][1]; acc_im_l += acc_im_val[5] * ixheaacd_sine[q][2]; acc_im_l += acc_im_val[6] * ixheaacd_sine[q][3]; acc_im_l += acc_im_val[7] * ixheaacd_sine[q][4]; acc_im_h = acc_im_h - (acc_im_l - acc_im_h); output[q][i].re = acc_re_l; output[q][i].im = acc_im_l; output[7 - q][i].re = acc_re_h; output[7 - q][i].im = acc_im_h; } } } static VOID ixheaacd_mps_hyb_filt_type2(ia_cmplx_flt_struct *input, ia_cmplx_flt_struct output[2][MAX_TIME_SLOTS], WORD32 num_samples, const FLOAT32 *filt_coeff) { WORD32 i, n; FLOAT32 in_re, in_im; FLOAT32 coeff; FLOAT32 acc_re[2], acc_im[2]; for (i = 0; i < num_samples; i++) { FLOAT32 x_0_re[13], x_0_im[13]; for (n = 1; n < 6; n = n + 2) { in_re = input[n + i].re; in_im = input[n + i].im; in_re += input[12 - n + i].re; in_im += input[12 - n + i].im; coeff = filt_coeff[QMF_HYBRID_FILT_ORDER - 1 - n]; x_0_re[n] = coeff * in_re; x_0_im[n] = coeff * in_im; } n = 6; in_re = input[n + i].re; in_im = input[n + i].im; coeff = filt_coeff[QMF_HYBRID_FILT_ORDER - 1 - n]; x_0_re[n] = coeff * in_re; x_0_im[n] = coeff * in_im; x_0_re[1] = x_0_re[1] + x_0_re[3] + x_0_re[5]; x_0_im[1] = x_0_im[1] + x_0_im[3] + x_0_im[5]; acc_re[0] = x_0_re[6] + x_0_re[1]; acc_im[0] = x_0_im[6] + x_0_im[1]; acc_re[1] = x_0_re[6] - x_0_re[1]; acc_im[1] = x_0_im[6] - x_0_im[1]; output[0][i].re = acc_re[0]; output[0][i].im = acc_im[0]; output[1][i].re = acc_re[1]; output[1][i].im = acc_im[1]; } } VOID ixheaacd_mps_qmf_hybrid_analysis_init(ia_mps_hybrid_filt_struct *handle) { memset(handle->lf_buffer, 0, QMF_BANDS_TO_HYBRID * BUFFER_LEN_LF_MPS * sizeof(ia_cmplx_w32_struct)); memset(handle->hf_buffer, 0, MAX_NUM_QMF_BANDS_MPS * BUFFER_LEN_HF_MPS * sizeof(ia_cmplx_flt_struct)); } VOID ixheaacd_mps_qmf_hybrid_analysis_no_pre_mix( ia_mps_hybrid_filt_struct *handle, ia_cmplx_flt_struct in_qmf[MAX_NUM_QMF_BANDS_MPS][MAX_TIME_SLOTS], WORD32 num_bands, WORD32 num_samples, ia_cmplx_flt_struct v[MAX_TIME_SLOTS][MAX_HYBRID_BANDS_MPS]) { WORD32 lf_samples_shift; WORD32 hf_samples_shift; WORD32 lf_qmf_bands; WORD32 k, n; ia_cmplx_flt_struct scratch[MAX_HYBRID_ONLY_BANDS_PER_QMF][MAX_TIME_SLOTS]; lf_samples_shift = BUFFER_LEN_LF_MPS - num_samples; hf_samples_shift = BUFFER_LEN_HF_MPS - num_samples; lf_qmf_bands = QMF_BANDS_TO_HYBRID; for (k = 0; k < lf_qmf_bands; k++) { memmove(&handle->lf_buffer[k][0].re, &handle->lf_buffer[k][num_samples].re, 2 * lf_samples_shift * sizeof(FLOAT32)); } for (k = 0; k < lf_qmf_bands; k++) { memcpy(&handle->lf_buffer[k][lf_samples_shift].re, &in_qmf[k][0].re, 2 * num_samples * sizeof(FLOAT32)); } for (k = 0; k < MAX_NUM_QMF_BANDS_SAC / 2 - lf_qmf_bands; k++) { memmove(&handle->hf_buffer[k][0].re, &handle->hf_buffer[k][num_samples].re, 2 * hf_samples_shift * sizeof(FLOAT32)); } for (k = 0; k < num_bands - lf_qmf_bands; k++) { memcpy(&handle->hf_buffer[k][hf_samples_shift].re, &in_qmf[k + lf_qmf_bands][0].re, 2 * num_samples * sizeof(FLOAT32)); } ixheaacd_mps_hyb_filt_type1( &(handle->lf_buffer[0][lf_samples_shift + 1 - QMF_HYBRID_FILT_ORDER]), scratch, num_samples, ixheaacd_ia_mps_hyb_filter_coeff_8); for (k = 0; k < 2; k++) { for (n = 0; n < num_samples; n++) { v[n][k].re = scratch[k + 6][n].re; v[n][k + 2].re = scratch[k][n].re; v[n][k + 4].re = scratch[k + 2][n].re; v[n][k + 4].re += scratch[5 - k][n].re; v[n][k].im = scratch[k + 6][n].im; v[n][k + 2].im = scratch[k][n].im; v[n][k + 4].im = scratch[k + 2][n].im; v[n][k + 4].im += scratch[5 - k][n].im; } } ixheaacd_mps_hyb_filt_type2( &(handle->lf_buffer[1][lf_samples_shift + 1 - QMF_HYBRID_FILT_ORDER]), scratch, num_samples, ixheaacd_mps_hyb_filter_coeff_2); for (k = 0; k < 2; k++) { for (n = 0; n < num_samples; n++) { v[n][k + 6].re = scratch[1 - k][n].re; v[n][k + 6].im = scratch[1 - k][n].im; } } ixheaacd_mps_hyb_filt_type2( &(handle->lf_buffer[2][lf_samples_shift + 1 - QMF_HYBRID_FILT_ORDER]), scratch, num_samples, ixheaacd_mps_hyb_filter_coeff_2); for (k = 0; k < 2; k++) { for (n = 0; n < num_samples; n++) { v[n][k + 8].re = scratch[k][n].re; v[n][k + 8].im = scratch[k][n].im; } } for (k = 0; k < num_bands - lf_qmf_bands; k++) { for (n = 0; n < num_samples; n++) { v[n][k + 10].re = (handle->hf_buffer[k][n + hf_samples_shift].re); v[n][k + 10].im = (handle->hf_buffer[k][n + hf_samples_shift].im); } } } VOID ixheaacd_mps_qmf_hybrid_analysis( ia_mps_hybrid_filt_struct *handle, ia_cmplx_flt_struct in_qmf[MAX_NUM_QMF_BANDS_MPS_NEW][MAX_TIME_SLOTS], WORD32 num_bands, WORD32 num_samples, ia_cmplx_flt_struct hyb[MAX_HYBRID_BANDS_MPS][MAX_TIME_SLOTS]) { WORD32 lf_samples_shift; WORD32 hf_samples_shift; WORD32 lf_qmf_bands; WORD32 k, n; ia_cmplx_flt_struct scratch[MAX_HYBRID_ONLY_BANDS_PER_QMF][MAX_TIME_SLOTS]; lf_samples_shift = BUFFER_LEN_LF_MPS - num_samples; hf_samples_shift = BUFFER_LEN_HF_MPS - num_samples; lf_qmf_bands = QMF_BANDS_TO_HYBRID; for (k = 0; k < lf_qmf_bands; k++) { memmove(&handle->lf_buffer[k][0].re, &handle->lf_buffer[k][num_samples].re, 2 * lf_samples_shift * sizeof(FLOAT32)); } for (k = 0; k < lf_qmf_bands; k++) { memcpy(&handle->lf_buffer[k][lf_samples_shift].re, &in_qmf[k][0].re, 2 * num_samples * sizeof(FLOAT32)); } for (k = 0; k < MAX_NUM_QMF_BANDS_SAC / 2 - lf_qmf_bands; k++) { memmove(&handle->hf_buffer[k][0].re, &handle->hf_buffer[k][num_samples].re, 2 * hf_samples_shift * sizeof(FLOAT32)); } for (k = 0; k < num_bands - lf_qmf_bands; k++) { memcpy(&handle->hf_buffer[k][hf_samples_shift].re, &in_qmf[k + lf_qmf_bands][0].re, 2 * num_samples * sizeof(FLOAT32)); } ixheaacd_mps_hyb_filt_type1( &(handle->lf_buffer[0][lf_samples_shift + 1 - QMF_HYBRID_FILT_ORDER]), scratch, num_samples, ixheaacd_ia_mps_hyb_filter_coeff_8); for (k = 0; k < 2; k++) { for (n = 0; n < num_samples; n++) { hyb[k][n].re = scratch[k + 6][n].re; hyb[k + 2][n].re = scratch[k][n].re; hyb[k + 4][n].re = scratch[k + 2][n].re; hyb[k + 4][n].re += scratch[5 - k][n].re; hyb[k][n].im = scratch[k + 6][n].im; hyb[k + 2][n].im = scratch[k][n].im; hyb[k + 4][n].im = scratch[k + 2][n].im; hyb[k + 4][n].im += scratch[5 - k][n].im; } } ixheaacd_mps_hyb_filt_type2( &(handle->lf_buffer[1][lf_samples_shift + 1 - QMF_HYBRID_FILT_ORDER]), scratch, num_samples, ixheaacd_mps_hyb_filter_coeff_2); for (k = 0; k < 2; k++) { for (n = 0; n < num_samples; n++) { hyb[k + 6][n].re = scratch[1 - k][n].re; hyb[k + 6][n].im = scratch[1 - k][n].im; } } ixheaacd_mps_hyb_filt_type2( &(handle->lf_buffer[2][lf_samples_shift + 1 - QMF_HYBRID_FILT_ORDER]), scratch, num_samples, ixheaacd_mps_hyb_filter_coeff_2); for (k = 0; k < 2; k++) { for (n = 0; n < num_samples; n++) { hyb[k + 8][n].re = scratch[k][n].re; hyb[k + 8][n].im = scratch[k][n].im; } } for (k = 0; k < num_bands - lf_qmf_bands; k++) { memcpy(&hyb[k + 10][0].re, &handle->hf_buffer[k][hf_samples_shift].re, 2 * num_samples * sizeof(FLOAT32)); } } VOID ixheaacd_mps_qmf_hybrid_synthesis( ia_cmplx_flt_struct hyb[MAX_TIME_SLOTS][MAX_HYBRID_BANDS_MPS], WORD32 num_bands, WORD32 num_samples, ia_cmplx_flt_struct in_qmf[MAX_TIME_SLOTS][MAX_NUM_QMF_BANDS_MPS]) { WORD32 k, n; for (n = 0; n < num_samples; n++) { in_qmf[n][0].re = hyb[n][0].re; in_qmf[n][0].im = hyb[n][0].im; for (k = 1; k < 6; k++) { in_qmf[n][0].re += hyb[n][k].re; in_qmf[n][0].im += hyb[n][k].im; } in_qmf[n][1].re = hyb[n][6].re + hyb[n][7].re; in_qmf[n][1].im = hyb[n][6].im + hyb[n][7].im; in_qmf[n][2].re = hyb[n][8].re + hyb[n][9].re; in_qmf[n][2].im = hyb[n][8].im + hyb[n][9].im; memcpy(&in_qmf[n][3].re, &hyb[n][10].re, 2 * (num_bands - 3) * sizeof(FLOAT32)); } } VOID ixheaacd_mps_fft(complex *out, LOOPINDEX idx, WORD32 nob, const ia_mps_dec_hybrid_tables_struct *hyb_tab) { LOOPINDEX block_per_stage, stage_num, inner; const WORD32 *cosine_array = hyb_tab->cosine_array; const WORD32 *sine_array = hyb_tab->sine_array; WORD32 index_1, index_2, index, tab_modifier; WORD32 len, increment, i; WORD32 cos_val; WORD32 sin_val; WORD16 index1; WORD32 re_temp; WORD32 im_temp; WORD32 *out1_w32, *out2_w32; len = idx; i = 1; increment = 0; len = len >> 1; index_1 = 0; increment += 1; index = 11 - increment; tab_modifier = ixheaac_shl32(1, index); out1_w32 = (WORD32 *)&out[index_1]; out2_w32 = (WORD32 *)&out[index_1 + 1]; for (block_per_stage = 0; block_per_stage < len; block_per_stage++) { re_temp = out2_w32[0]; im_temp = out2_w32[1]; out2_w32[0] = (out1_w32[0] - re_temp); out2_w32[1] = (out1_w32[1] - im_temp); out1_w32[0] = (re_temp + out1_w32[0]); out1_w32[1] = (im_temp + out1_w32[1]); out1_w32 += 4; out2_w32 += 4; } i <<= 1; for (stage_num = 1; stage_num < nob; stage_num++) { len = len >> 1; index_1 = 0; increment += 1; index = 11 - increment; tab_modifier = ixheaac_shl32(1, index); for (block_per_stage = 0; block_per_stage < len; block_per_stage++) { index_2 = index_1 + i; out1_w32 = (WORD32 *)&out[index_1]; out2_w32 = (WORD32 *)&out[index_2]; re_temp = out1_w32[0]; im_temp = out1_w32[1]; out1_w32[0] = (re_temp + out2_w32[0]) >> 1; out1_w32[1] = (im_temp + out2_w32[1]) >> 1; out2_w32[0] = (re_temp - out2_w32[0]) >> 1; out2_w32[1] = (im_temp - out2_w32[1]) >> 1; index1 = tab_modifier; out1_w32 += 2; out2_w32 += 2; for (inner = 0; inner < ((i - 1) << 1); inner += 2) { cos_val = cosine_array[index1]; sin_val = sine_array[index1]; re_temp = ixheaacd_mps_mult32x16_shr_16(out2_w32[inner], cos_val) + ixheaacd_mps_mult32x16_shr_16(out2_w32[inner + 1], sin_val); im_temp = ixheaacd_mps_mult32x16_shr_16(out2_w32[inner + 1], cos_val) - ixheaacd_mps_mult32x16_shr_16(out2_w32[inner], sin_val); out1_w32[inner] >>= 1; out1_w32[inner + 1] >>= 1; out2_w32[inner] = out1_w32[inner] - re_temp; out2_w32[inner + 1] = out1_w32[inner + 1] - im_temp; out1_w32[inner] = (out1_w32[inner] + re_temp); out1_w32[inner + 1] = (out1_w32[inner + 1] + im_temp); index1 += tab_modifier; } index_1 += ixheaac_shl32(1, increment); } i <<= 1; } } VOID ixheaacd_8ch_filtering(const WORD32 *p_qmf_real, const WORD32 *p_qmf_imag, WORD32 *m_hybrid_real, WORD32 *m_hybrid_imag, const ia_mps_dec_hybrid_tables_struct *hyb_tab) { WORD32 n; WORD32 real, imag; const WORD16 tcos = COS_PI_BY_8; const WORD16 tsin = SIN_PI_BY_8; WORD32 cum[16]; WORD32 *p_complex; const WORD16 *p8_13 = hyb_tab->p8_13; real = ixheaac_shl32((ixheaac_mult32x16in32(p_qmf_real[4], p8_13[4]) + ixheaac_mult32x16in32(p_qmf_real[12], p8_13[12])), 1); imag = ixheaac_shl32((ixheaac_mult32x16in32(p_qmf_imag[4], p8_13[4]) + ixheaac_mult32x16in32(p_qmf_imag[12], p8_13[12])), 1); cum[5] = imag - real; cum[4] = -(imag + real); real = ixheaac_shl32((ixheaac_mult32x16in32(p_qmf_real[3], p8_13[3]) + ixheaac_mult32x16in32(p_qmf_real[11], p8_13[11])), 1); imag = ixheaac_shl32((ixheaac_mult32x16in32(p_qmf_imag[3], p8_13[3]) + ixheaac_mult32x16in32(p_qmf_imag[11], p8_13[11])), 1); cum[13] = ixheaac_shl32( (ixheaac_mult32x16in32(imag, tcos) - ixheaac_mult32x16in32(real, tsin)), 1); cum[12] = ixheaac_shl32( -((ixheaac_mult32x16in32(imag, tsin) + ixheaac_mult32x16in32(real, tcos))), 1); cum[2] = ixheaac_shl32(ixheaac_mult32x16in32((p_qmf_real[2] - p_qmf_real[10]), p8_13[10]), 1); cum[3] = ixheaac_shl32(ixheaac_mult32x16in32((p_qmf_imag[2] - p_qmf_imag[10]), p8_13[2]), 1); real = ixheaac_shl32((ixheaac_mult32x16in32(p_qmf_real[1], p8_13[1]) + ixheaac_mult32x16in32(p_qmf_real[9], p8_13[9])), 1); imag = ixheaac_shl32((ixheaac_mult32x16in32(p_qmf_imag[1], p8_13[1]) + ixheaac_mult32x16in32(p_qmf_imag[9], p8_13[9])), 1); cum[11] = ixheaac_shl32( (ixheaac_mult32x16in32(imag, tcos) + ixheaac_mult32x16in32(real, tsin)), 1); cum[10] = ixheaac_shl32( (ixheaac_mult32x16in32(imag, tsin) - ixheaac_mult32x16in32(real, tcos)), 1); real = ixheaac_shl32((ixheaac_mult32x16in32(p_qmf_real[0], p8_13[0]) + ixheaac_mult32x16in32(p_qmf_real[8], p8_13[8])), 1); imag = ixheaac_shl32((ixheaac_mult32x16in32(p_qmf_imag[0], p8_13[0]) + ixheaac_mult32x16in32(p_qmf_imag[8], p8_13[8])), 1); cum[7] = imag + real; cum[6] = imag - real; cum[15] = ixheaac_shl32((ixheaac_mult32x16in32(p_qmf_imag[7], p8_13[14]) + ixheaac_mult32x16in32(p_qmf_real[7], p8_13[13])), 1); cum[14] = ixheaac_shl32((ixheaac_mult32x16in32(p_qmf_imag[7], p8_13[13]) - ixheaac_mult32x16in32(p_qmf_real[7], p8_13[14])), 1); cum[1] = ixheaac_shl32( ixheaac_mult32x16in32(p_qmf_real[HYBRID_FILTER_DELAY], p8_13[HYBRID_FILTER_DELAY]), 1); cum[0] = ixheaac_shl32( ixheaac_mult32x16in32(p_qmf_imag[HYBRID_FILTER_DELAY], p8_13[HYBRID_FILTER_DELAY]), 1); cum[9] = ixheaac_shl32((ixheaac_mult32x16in32(p_qmf_real[5], p8_13[13]) - ixheaac_mult32x16in32(p_qmf_imag[5], p8_13[14])), 1); cum[8] = ixheaac_shl32((ixheaac_mult32x16in32(p_qmf_real[5], p8_13[14]) + ixheaac_mult32x16in32(p_qmf_imag[5], p8_13[13])), 1); ixheaacd_mps_fft((complex *)cum, 8, 3, hyb_tab); p_complex = cum; for (n = 0; n < 8; n++) { m_hybrid_imag[n] = *p_complex++; m_hybrid_real[n] = *p_complex++; } } VOID ixheaacd_2ch_filtering(WORD32 *p_qmf, WORD32 *m_hybrid, const ia_mps_dec_hybrid_tables_struct *hyb_tab_ptr) { WORD32 cum0, cum1; WORD64 temp; const WORD16 *p2_6 = hyb_tab_ptr->p2_6; cum0 = (WORD32)p_qmf[HYBRID_FILTER_DELAY] >> 1; temp = (WORD64)((WORD64)p2_6[0] * (WORD64)(p_qmf[1] + p_qmf[11]) + (WORD64)p2_6[1] * (WORD64)(p_qmf[3] + p_qmf[9])); temp += (WORD64)p2_6[2] * (WORD64)(p_qmf[5] + p_qmf[7]); cum1 = (WORD32)(temp >> 16); m_hybrid[0] = cum0 + cum1; m_hybrid[1] = cum0 - cum1; } WORD32 ixheaacd_get_qmf_sb( WORD32 hybrid_subband, const ia_mps_dec_mdct2qmf_table_struct *ixheaacd_mps_dec_mdct2qmf_table) { return ixheaacd_mps_dec_mdct2qmf_table->hybrid_2_qmf[hybrid_subband]; } VOID ixheaacd_init_ana_hyb_filt_bank(ia_mps_dec_thyb_filter_state_struct *hyb_state) { WORD32 k, n; for (k = 0; k < QMF_BANDS_TO_HYBRID; k++) { for (n = 0; n < PROTO_LEN - 1 + MAX_TIME_SLOTS; n++) { hyb_state->buffer_lf_real[k][n] = 0; hyb_state->buffer_lf_imag[k][n] = 0; hyb_state->qmf_lf_real[k][n] = 0; hyb_state->qmf_lf_imag[k][n] = 0; } } for (k = 0; k < MAX_NUM_QMF_BANDS; k++) { for (n = 0; n < ((PROTO_LEN - 1) >> 1) + MAX_TIME_SLOTS; n++) { hyb_state->buffer_hf_real[k][n] = 0; hyb_state->buffer_hf_imag[k][n] = 0; } } } VOID ixheaacd_apply_ana_hyb_filt_bank_create_x( ia_mps_dec_thyb_filter_state_struct *hyb_state, WORD32 *m_qmf_real, WORD32 *m_qmf_imag, WORD32 nr_bands, WORD32 nr_samples, WORD32 *m_hybrid_real, WORD32 *m_hybrid_imag, const ia_mps_dec_hybrid_tables_struct *hyb_tab_ptr) { WORD32 nr_samples_shift_lf; WORD32 nr_qmf_bands_lf; WORD32 k, n; WORD32 time_slot; WORD32 proto_len = (PROTO_LEN - 1) >> 1; WORD32 val = nr_samples - proto_len; WORD32 val_xhb = val * MAX_HYBRID_BANDS; WORD32 loop_cnt, loop_cnt_x4; WORD32 *p_qmf_real, *p_qmf_re, *p_qmf_imag, *p_qmf_im; WORD32 m_temp_output_real[MAX_HYBRID_ONLY_BANDS_PER_QMF]; WORD32 m_temp_output_imag[MAX_HYBRID_ONLY_BANDS_PER_QMF]; WORD32 *p_hybrid_real = m_hybrid_real + 10; WORD32 *p_hybrid_imag = m_hybrid_imag + 10; WORD32 *p_hybrid_re, *p_hybrid_im; nr_samples_shift_lf = BUFFER_LEN_LF - nr_samples; nr_qmf_bands_lf = QMF_BANDS_TO_HYBRID; loop_cnt = nr_bands - nr_qmf_bands_lf; loop_cnt_x4 = (loop_cnt << 2); for (k = 0; k < nr_qmf_bands_lf; k++) { for (n = 0; n < nr_samples_shift_lf; n++) { hyb_state->buffer_lf_real[k][n] = hyb_state->buffer_lf_real[k][n + nr_samples]; hyb_state->buffer_lf_imag[k][n] = hyb_state->buffer_lf_imag[k][n + nr_samples]; hyb_state->qmf_lf_real[k][n] = hyb_state->qmf_lf_real[k][n + nr_samples]; hyb_state->qmf_lf_imag[k][n] = hyb_state->qmf_lf_imag[k][n + nr_samples]; } } p_qmf_real = m_qmf_real; p_qmf_imag = m_qmf_imag; for (k = 0; k < nr_qmf_bands_lf; k++) { p_qmf_re = p_qmf_real; p_qmf_im = p_qmf_imag; for (n = 0; n < nr_samples; n++) { hyb_state->buffer_lf_real[k][n + nr_samples_shift_lf] = *p_qmf_re; hyb_state->buffer_lf_imag[k][n + nr_samples_shift_lf] = *p_qmf_im; hyb_state->qmf_lf_imag[k][n + nr_samples_shift_lf] = *p_qmf_im; hyb_state->qmf_lf_real[k][n + nr_samples_shift_lf] = *p_qmf_re; p_qmf_re += MAX_HYBRID_BANDS; p_qmf_im += MAX_HYBRID_BANDS; } p_qmf_real++; p_qmf_imag++; } p_qmf_real = m_qmf_real + nr_qmf_bands_lf + val_xhb; p_qmf_imag = m_qmf_imag + nr_qmf_bands_lf + val_xhb; for (n = 0; n < proto_len; n++) { p_qmf_re = p_qmf_real; p_qmf_im = p_qmf_imag; p_hybrid_re = p_hybrid_real; p_hybrid_im = p_hybrid_imag; for (k = 0; k < loop_cnt; k++) { *p_hybrid_re++ = hyb_state->buffer_hf_real[k][n]; *p_hybrid_im++ = hyb_state->buffer_hf_imag[k][n]; hyb_state->buffer_hf_real[k][n] = *p_qmf_re++; hyb_state->buffer_hf_imag[k][n] = *p_qmf_im++; } p_qmf_real += MAX_HYBRID_BANDS; p_qmf_imag += MAX_HYBRID_BANDS; p_hybrid_real += MAX_HYBRID_BANDS; p_hybrid_imag += MAX_HYBRID_BANDS; } p_qmf_real = m_qmf_real; p_qmf_imag = m_qmf_imag; p_hybrid_real = m_hybrid_real + 10; p_hybrid_imag = m_hybrid_imag + 10; k = proto_len * MAX_HYBRID_BANDS; p_hybrid_re = p_hybrid_real + k; p_hybrid_im = p_hybrid_imag + k; p_qmf_re = p_qmf_real + nr_qmf_bands_lf; p_qmf_im = p_qmf_imag + nr_qmf_bands_lf; for (n = 0; n < val; n++) { memcpy(p_hybrid_re, p_qmf_re, loop_cnt_x4); memcpy(p_hybrid_im, p_qmf_im, loop_cnt_x4); p_qmf_re += MAX_HYBRID_BANDS; p_qmf_im += MAX_HYBRID_BANDS; p_hybrid_re += MAX_HYBRID_BANDS; p_hybrid_im += MAX_HYBRID_BANDS; } p_hybrid_real = m_hybrid_real; p_hybrid_imag = m_hybrid_imag; for (time_slot = 0; time_slot < nr_samples; time_slot++) { p_hybrid_re = p_hybrid_real; p_hybrid_im = p_hybrid_imag; ixheaacd_8ch_filtering( &(hyb_state->buffer_lf_real[0][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), &(hyb_state->buffer_lf_imag[0][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), m_temp_output_real, m_temp_output_imag, hyb_tab_ptr); *p_hybrid_re++ = m_temp_output_real[6]; *p_hybrid_re++ = m_temp_output_real[7]; *p_hybrid_re++ = m_temp_output_real[0]; *p_hybrid_re++ = m_temp_output_real[1]; *p_hybrid_re++ = (m_temp_output_real[2] + m_temp_output_real[5]); *p_hybrid_re++ = (m_temp_output_real[3] + m_temp_output_real[4]); *p_hybrid_im++ = m_temp_output_imag[6]; *p_hybrid_im++ = m_temp_output_imag[7]; *p_hybrid_im++ = m_temp_output_imag[0]; *p_hybrid_im++ = m_temp_output_imag[1]; *p_hybrid_im++ = (m_temp_output_imag[2] + m_temp_output_imag[5]); *p_hybrid_im++ = (m_temp_output_imag[3] + m_temp_output_imag[4]); ixheaacd_2ch_filtering( &(hyb_state->buffer_lf_real[1][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), m_temp_output_real, hyb_tab_ptr); ixheaacd_2ch_filtering( &(hyb_state->buffer_lf_imag[1][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), m_temp_output_imag, hyb_tab_ptr); *p_hybrid_re++ = m_temp_output_real[1]; *p_hybrid_re++ = m_temp_output_real[0]; *p_hybrid_im++ = m_temp_output_imag[1]; *p_hybrid_im++ = m_temp_output_imag[0]; ixheaacd_2ch_filtering( &(hyb_state->buffer_lf_real[2][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), m_temp_output_real, hyb_tab_ptr); ixheaacd_2ch_filtering( &(hyb_state->buffer_lf_imag[2][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), m_temp_output_imag, hyb_tab_ptr); *p_hybrid_re++ = m_temp_output_real[0]; *p_hybrid_re++ = m_temp_output_real[1]; *p_hybrid_im++ = m_temp_output_imag[0]; *p_hybrid_im++ = m_temp_output_imag[1]; p_hybrid_real += MAX_HYBRID_BANDS; p_hybrid_imag += MAX_HYBRID_BANDS; } p_qmf_real = m_qmf_real; p_qmf_imag = m_qmf_imag; for (k = 0; k < nr_qmf_bands_lf; k++) { p_qmf_re = p_qmf_real; p_qmf_im = p_qmf_imag; for (n = MAX_TIME_SLOTS; n < nr_samples_shift_lf; n++) { hyb_state->buffer_lf_real[k][n] = hyb_state->qmf_lf_real[k][n]; hyb_state->buffer_lf_imag[k][n] = hyb_state->qmf_lf_imag[k][n]; } for (n = 0; n < nr_samples; n++) { hyb_state->buffer_lf_real[k][n + nr_samples_shift_lf] = *p_qmf_re; hyb_state->buffer_lf_imag[k][n + nr_samples_shift_lf] = *p_qmf_im; p_qmf_re += MAX_HYBRID_BANDS; p_qmf_im += MAX_HYBRID_BANDS; } p_qmf_real++; p_qmf_imag++; } } VOID ixheaacd_apply_ana_hyb_filt_bank_merge_res_decor( ia_mps_dec_thyb_filter_state_struct *hyb_state, WORD32 *m_qmf_real, WORD32 *m_qmf_imag, WORD32 nr_bands, WORD32 nr_samples, WORD32 *m_hybrid_real, WORD32 *m_hybrid_imag, const ia_mps_dec_hybrid_tables_struct *hyb_tab_ptr) { WORD32 nr_samples_shift_lf; WORD32 nr_qmf_bands_lf; WORD32 k, n; WORD32 time_slot; WORD32 m_temp_output_real[MAX_HYBRID_ONLY_BANDS_PER_QMF]; WORD32 m_temp_output_imag[MAX_HYBRID_ONLY_BANDS_PER_QMF]; WORD32 proto_len = (PROTO_LEN - 1) >> 1; WORD32 val = nr_samples - proto_len; WORD32 loop_cnt; WORD32 *p_qmf_real = m_qmf_real; WORD32 *p_qmf_imag = m_qmf_imag; WORD32 *p_hybrid_real = m_hybrid_real + 10; WORD32 *p_hybrid_imag = m_hybrid_imag + 10; WORD32 *p_buffer_lf_real, *p_buffer_lf_imag; WORD32 nr_samples_x4 = nr_samples << 2; nr_samples_shift_lf = BUFFER_LEN_LF - nr_samples; nr_qmf_bands_lf = QMF_BANDS_TO_HYBRID; loop_cnt = nr_bands - nr_qmf_bands_lf; for (k = 0; k < nr_qmf_bands_lf; k++) { for (n = 0; n < nr_samples_shift_lf; n++) { hyb_state->buffer_lf_real[k][n] = hyb_state->buffer_lf_real[k][n + nr_samples]; hyb_state->buffer_lf_imag[k][n] = hyb_state->buffer_lf_imag[k][n + nr_samples]; hyb_state->qmf_lf_real[k][n] = hyb_state->qmf_lf_real[k][n + nr_samples]; hyb_state->qmf_lf_imag[k][n] = hyb_state->qmf_lf_imag[k][n + nr_samples]; } } for (k = 0; k < nr_qmf_bands_lf; k++) { WORD32 *qmf_real = p_qmf_real; WORD32 *qmf_imag = p_qmf_imag; for (n = 0; n < nr_samples; n++) { hyb_state->buffer_lf_real[k][n + nr_samples_shift_lf] = *qmf_real; hyb_state->buffer_lf_imag[k][n + nr_samples_shift_lf] = *qmf_imag; hyb_state->qmf_lf_imag[k][n + nr_samples_shift_lf] = *qmf_imag++; hyb_state->qmf_lf_real[k][n + nr_samples_shift_lf] = *qmf_real++; } p_qmf_real += MAX_TIME_SLOTS; p_qmf_imag += MAX_TIME_SLOTS; } p_qmf_real = m_qmf_real + nr_qmf_bands_lf * MAX_TIME_SLOTS; p_qmf_imag = m_qmf_imag + nr_qmf_bands_lf * MAX_TIME_SLOTS; for (k = 0; k < loop_cnt; k++) { WORD32 *qmf_real = p_qmf_real + val; WORD32 *qmf_imag = p_qmf_imag + val; WORD32 *hybrid_real = p_hybrid_real; WORD32 *hybrid_imag = p_hybrid_imag; for (n = 0; n < proto_len; n++) { *hybrid_real = hyb_state->buffer_hf_real[k][n]; *hybrid_imag = hyb_state->buffer_hf_imag[k][n]; hyb_state->buffer_hf_real[k][n] = *qmf_real++; hyb_state->buffer_hf_imag[k][n] = *qmf_imag++; hybrid_real += MAX_HYBRID_BANDS; hybrid_imag += MAX_HYBRID_BANDS; } p_qmf_real += MAX_TIME_SLOTS; p_qmf_imag += MAX_TIME_SLOTS; p_hybrid_real++; p_hybrid_imag++; } p_qmf_real = m_qmf_real + NR_QMF_BANDS_LFXTS; p_qmf_imag = m_qmf_imag + NR_QMF_BANDS_LFXTS; p_hybrid_real = m_hybrid_real + 10; p_hybrid_imag = m_hybrid_imag + 10; for (k = 0; k < loop_cnt; k++) { WORD32 *qmf_real = p_qmf_real; WORD32 *qmf_imag = p_qmf_imag; WORD32 *hybrid_real = p_hybrid_real + proto_len * MAX_HYBRID_BANDS; WORD32 *hybrid_imag = p_hybrid_imag + proto_len * MAX_HYBRID_BANDS; for (n = 0; n < val; n++) { *hybrid_real = *qmf_real++; *hybrid_imag = *qmf_imag++; hybrid_real += MAX_HYBRID_BANDS; hybrid_imag += MAX_HYBRID_BANDS; } p_qmf_real += MAX_TIME_SLOTS; p_qmf_imag += MAX_TIME_SLOTS; p_hybrid_real++; p_hybrid_imag++; } p_hybrid_real = m_hybrid_real; p_hybrid_imag = m_hybrid_imag; for (time_slot = 0; time_slot < nr_samples; time_slot++) { WORD32 *hybrid_real = p_hybrid_real; WORD32 *hybrid_imag = p_hybrid_imag; ixheaacd_8ch_filtering( &(hyb_state->buffer_lf_real[0][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), &(hyb_state->buffer_lf_imag[0][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), m_temp_output_real, m_temp_output_imag, hyb_tab_ptr); *hybrid_real++ = m_temp_output_real[6]; *hybrid_real++ = m_temp_output_real[7]; *hybrid_real++ = m_temp_output_real[0]; *hybrid_real++ = m_temp_output_real[1]; *hybrid_imag++ = (m_temp_output_imag[2] + m_temp_output_imag[5]); *hybrid_real++ = (m_temp_output_real[3] + m_temp_output_real[4]); *hybrid_imag++ = m_temp_output_imag[6]; *hybrid_imag++ = m_temp_output_imag[7]; *hybrid_imag++ = m_temp_output_imag[0]; *hybrid_imag++ = m_temp_output_imag[1]; *hybrid_real++ = (m_temp_output_real[2] + m_temp_output_real[5]); *hybrid_imag++ = (m_temp_output_imag[3] + m_temp_output_imag[4]); ixheaacd_2ch_filtering( &(hyb_state->buffer_lf_real[1][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), m_temp_output_real, hyb_tab_ptr); ixheaacd_2ch_filtering( &(hyb_state->buffer_lf_imag[1][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), m_temp_output_imag, hyb_tab_ptr); *hybrid_real++ = m_temp_output_real[1]; *hybrid_real++ = m_temp_output_real[0]; *hybrid_imag++ = m_temp_output_imag[0]; *hybrid_imag++ = m_temp_output_imag[1]; ixheaacd_2ch_filtering( &(hyb_state->buffer_lf_real[2][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), m_temp_output_real, hyb_tab_ptr); ixheaacd_2ch_filtering( &(hyb_state->buffer_lf_imag[2][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), m_temp_output_imag, hyb_tab_ptr); *hybrid_real++ = m_temp_output_real[0]; *hybrid_real++ = m_temp_output_real[1]; *hybrid_imag++ = m_temp_output_imag[0]; *hybrid_imag++ = m_temp_output_imag[1]; p_hybrid_real += MAX_HYBRID_BANDS; p_hybrid_imag += MAX_HYBRID_BANDS; } p_qmf_real = m_qmf_real; p_qmf_imag = m_qmf_imag; p_buffer_lf_real = &hyb_state->buffer_lf_real[0][nr_samples_shift_lf]; p_buffer_lf_imag = &hyb_state->buffer_lf_imag[0][nr_samples_shift_lf]; for (k = 0; k < nr_qmf_bands_lf; k++) { for (n = MAX_TIME_SLOTS; n < nr_samples_shift_lf; n++) { hyb_state->buffer_lf_real[k][n] = hyb_state->qmf_lf_real[k][n]; hyb_state->buffer_lf_imag[k][n] = hyb_state->qmf_lf_imag[k][n]; } { memcpy(p_buffer_lf_real, p_qmf_real, nr_samples_x4); memcpy(p_buffer_lf_imag, p_qmf_imag, nr_samples_x4); } p_qmf_real += MAX_TIME_SLOTS; p_qmf_imag += MAX_TIME_SLOTS; p_buffer_lf_real += BUFFER_LEN_LF; p_buffer_lf_imag += BUFFER_LEN_LF; } } VOID ixheaacd_apply_ana_hyb_filt_bank_create_x_res( ia_mps_dec_thyb_filter_state_struct *hyb_state, WORD32 *m_qmf_real, WORD32 *m_qmf_imag, WORD32 nr_bands, WORD32 nr_samples, WORD32 *m_hybrid_real, WORD32 *m_hybrid_imag, SIZE_T *indx, WORD32 res, WORD32 hyb_bands, WORD32 num_parameter_bands, WORD32 *counter, const ia_mps_dec_hybrid_tables_struct *hyb_tab_ptr) { WORD32 nr_samples_shift_lf; WORD32 nr_qmf_bands_lf; WORD32 k, n, qs; WORD32 time_slot, ch_off_set; SIZE_T *idx = indx; WORD32 proto_len = (PROTO_LEN - 1) >> 1; WORD32 val = nr_samples - proto_len; WORD32 *p_qmf_real = m_qmf_real; WORD32 *p_qmf_imag = m_qmf_imag; WORD32 loop_cnt; WORD32 m_temp_output_real[MAX_HYBRID_ONLY_BANDS_PER_QMF]; WORD32 m_temp_output_imag[MAX_HYBRID_ONLY_BANDS_PER_QMF]; WORD32 *p_hybrid_real = m_hybrid_real + 10; WORD32 *p_hybrid_imag = m_hybrid_imag + 10; WORD32 *p_hybrid_re, *p_hybrid_im; WORD32 *p_buffer_lf_real, *p_buffer_lf_imag; WORD32 nr_samples_x4 = nr_samples << 2; nr_samples_shift_lf = BUFFER_LEN_LF - nr_samples; nr_qmf_bands_lf = QMF_BANDS_TO_HYBRID; loop_cnt = nr_bands - nr_qmf_bands_lf; ch_off_set = 0; for (k = 0; k < nr_qmf_bands_lf; k++) { for (n = 0; n < nr_samples_shift_lf; n++) { hyb_state->buffer_lf_real[k][n] = hyb_state->buffer_lf_real[k][n + nr_samples]; hyb_state->buffer_lf_imag[k][n] = hyb_state->buffer_lf_imag[k][n + nr_samples]; hyb_state->qmf_lf_real[k][n] = hyb_state->qmf_lf_real[k][n + nr_samples]; hyb_state->qmf_lf_imag[k][n] = hyb_state->qmf_lf_imag[k][n + nr_samples]; } } for (k = 0; k < nr_qmf_bands_lf; k++) { WORD32 *qmf_real = p_qmf_real; WORD32 *qmf_imag = p_qmf_imag; for (n = 0; n < nr_samples; n++) { hyb_state->buffer_lf_real[k][n + nr_samples_shift_lf] = *qmf_real; hyb_state->buffer_lf_imag[k][n + nr_samples_shift_lf] = *qmf_imag; hyb_state->qmf_lf_imag[k][n + nr_samples_shift_lf] = *qmf_imag++; hyb_state->qmf_lf_real[k][n + nr_samples_shift_lf] = *qmf_real++; } p_qmf_real += MAX_TIME_SLOTS; p_qmf_imag += MAX_TIME_SLOTS; } p_qmf_real = m_qmf_real + NR_QMF_BANDS_LFXTS; p_qmf_imag = m_qmf_imag + NR_QMF_BANDS_LFXTS; for (k = 0; k < loop_cnt; k++) { WORD32 *qmf_real = p_qmf_real + val; WORD32 *qmf_imag = p_qmf_imag + val; p_hybrid_re = p_hybrid_real; p_hybrid_im = p_hybrid_imag; for (n = 0; n < proto_len; n++) { *p_hybrid_re = hyb_state->buffer_hf_real[k][n]; *p_hybrid_im = hyb_state->buffer_hf_imag[k][n]; hyb_state->buffer_hf_real[k][n] = *qmf_real++; hyb_state->buffer_hf_imag[k][n] = *qmf_imag++; p_hybrid_re += MAX_HYBRID_BANDS; p_hybrid_im += MAX_HYBRID_BANDS; } p_qmf_real += MAX_TIME_SLOTS; p_qmf_imag += MAX_TIME_SLOTS; p_hybrid_real++; p_hybrid_imag++; } p_qmf_real = m_qmf_real + NR_QMF_BANDS_LFXTS; p_qmf_imag = m_qmf_imag + NR_QMF_BANDS_LFXTS; p_hybrid_real = m_hybrid_real + 10; p_hybrid_imag = m_hybrid_imag + 10; for (k = 0; k < loop_cnt; k++) { WORD32 *qmf_real = p_qmf_real; WORD32 *qmf_imag = p_qmf_imag; p_hybrid_re = p_hybrid_real + proto_len * MAX_HYBRID_BANDS; p_hybrid_im = p_hybrid_imag + proto_len * MAX_HYBRID_BANDS; for (n = 0; n < val; n++) { *p_hybrid_re = *qmf_real++; *p_hybrid_im = *qmf_imag++; p_hybrid_re += MAX_HYBRID_BANDS; p_hybrid_im += MAX_HYBRID_BANDS; } p_qmf_real += MAX_TIME_SLOTS; p_qmf_imag += MAX_TIME_SLOTS; p_hybrid_real++; p_hybrid_imag++; } if (res == 1 && (num_parameter_bands == 20 || num_parameter_bands == 28)) *counter = 3; else { idx = indx; for (qs = 0; qs < hyb_bands; qs++) { if (*idx++ >= (SIZE_T)res) { *counter = qs; qs = hyb_bands; } } } p_hybrid_real = m_hybrid_real; p_hybrid_imag = m_hybrid_imag; for (time_slot = 0; time_slot < nr_samples; time_slot++) { idx = indx; p_hybrid_re = p_hybrid_real; p_hybrid_im = p_hybrid_imag; ixheaacd_8ch_filtering( &(hyb_state->buffer_lf_real[0][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), &(hyb_state->buffer_lf_imag[0][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), m_temp_output_real, m_temp_output_imag, hyb_tab_ptr); *p_hybrid_re++ = m_temp_output_real[6]; *p_hybrid_re++ = m_temp_output_real[7]; *p_hybrid_re++ = m_temp_output_real[0]; *p_hybrid_re++ = m_temp_output_real[1]; *p_hybrid_im++ = m_temp_output_imag[6]; *p_hybrid_im++ = m_temp_output_imag[7]; *p_hybrid_im++ = m_temp_output_imag[0]; *p_hybrid_im++ = m_temp_output_imag[1]; if (*counter > 4) { *p_hybrid_re++ = (m_temp_output_real[2] + m_temp_output_real[5]); *p_hybrid_im++ = (m_temp_output_imag[2] + m_temp_output_imag[5]); } if (*counter > 5) { *p_hybrid_re++ = (m_temp_output_real[3] + m_temp_output_real[4]); *p_hybrid_im++ = (m_temp_output_imag[3] + m_temp_output_imag[4]); } ch_off_set = 6; p_hybrid_re = p_hybrid_real + ch_off_set; p_hybrid_im = p_hybrid_imag + ch_off_set; ixheaacd_2ch_filtering( &(hyb_state->buffer_lf_real[1][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), m_temp_output_real, hyb_tab_ptr); ixheaacd_2ch_filtering( &(hyb_state->buffer_lf_imag[1][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), m_temp_output_imag, hyb_tab_ptr); *p_hybrid_re++ = m_temp_output_real[1]; *p_hybrid_re++ = m_temp_output_real[0]; *p_hybrid_im++ = m_temp_output_imag[1]; *p_hybrid_im++ = m_temp_output_imag[0]; ixheaacd_2ch_filtering( &(hyb_state->buffer_lf_real[2][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), m_temp_output_real, hyb_tab_ptr); ixheaacd_2ch_filtering( &(hyb_state->buffer_lf_imag[2][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]), m_temp_output_imag, hyb_tab_ptr); *p_hybrid_re++ = m_temp_output_real[0]; *p_hybrid_re++ = m_temp_output_real[1]; *p_hybrid_im++ = m_temp_output_imag[0]; *p_hybrid_im++ = m_temp_output_imag[1]; p_hybrid_real += MAX_HYBRID_BANDS; p_hybrid_imag += MAX_HYBRID_BANDS; } p_qmf_real = m_qmf_real; p_qmf_imag = m_qmf_imag; p_buffer_lf_real = &hyb_state->buffer_lf_real[0][nr_samples_shift_lf]; p_buffer_lf_imag = &hyb_state->buffer_lf_imag[0][nr_samples_shift_lf]; for (k = 0; k < nr_qmf_bands_lf; k++) { for (n = MAX_TIME_SLOTS; n < nr_samples_shift_lf; n++) { hyb_state->buffer_lf_real[k][n] = hyb_state->qmf_lf_real[k][n]; hyb_state->buffer_lf_imag[k][n] = hyb_state->qmf_lf_imag[k][n]; } { memcpy(p_buffer_lf_real, p_qmf_real, nr_samples_x4); memcpy(p_buffer_lf_imag, p_qmf_imag, nr_samples_x4); } p_qmf_real += MAX_TIME_SLOTS; p_qmf_imag += MAX_TIME_SLOTS; p_buffer_lf_real += BUFFER_LEN_LF; p_buffer_lf_imag += BUFFER_LEN_LF; } }