658 lines
22 KiB
C
658 lines
22 KiB
C
/******************************************************************************
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* *
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*****************************************************************************
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* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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*/
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#include <string.h>
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#include "ixheaacd_type_def.h"
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#include "ixheaacd_constants.h"
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#include "ixheaacd_basic_ops32.h"
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#include "ixheaacd_windows.h"
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static PLATFORM_INLINE WORD32 ixheaacd_mult32_sh1(WORD32 a, WORD32 b) {
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WORD32 result;
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WORD64 temp_result;
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temp_result = (WORD64)a * (WORD64)b;
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result = (WORD32)(temp_result >> 31);
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return (result);
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}
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VOID ixheaacd_memset(FLOAT32 *x, WORD32 n) {
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memset(x, 0, n * sizeof(FLOAT32));
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return;
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}
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VOID ixheaacd_mem_cpy(const FLOAT32 x[], FLOAT32 y[], WORD32 n) {
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memcpy(y, x, n * sizeof(FLOAT32));
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return;
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}
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VOID ixheaacd_vec_cnst_mul(FLOAT32 a, FLOAT32 x[], FLOAT32 z[], WORD32 n) {
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WORD32 i;
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for (i = 0; i < n; i++) {
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z[i] = (FLOAT32)a * x[i];
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}
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return;
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}
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VOID ixheaacd_combine_fac(WORD32 *src1, WORD32 *src2, WORD32 *dest, WORD32 len,
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WORD8 output_q, WORD8 fac_q) {
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WORD32 i;
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if (fac_q > output_q) {
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for (i = 0; i < len; i++) {
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*dest = ixheaacd_add32_sat(*src1, ((*src2) >> (fac_q - output_q)));
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dest++;
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src1++;
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src2++;
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}
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} else {
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for (i = 0; i < len; i++) {
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*dest = ixheaacd_add32_sat(
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*src1, ixheaacd_shl32_sat((*src2), (output_q - fac_q)));
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dest++;
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src1++;
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src2++;
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}
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}
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}
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WORD8 ixheaacd_windowing_long1(WORD32 *src1, WORD32 *src2,
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const WORD32 *win_fwd, const WORD32 *win_rev,
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WORD32 *dest, WORD32 vlen, WORD8 shift1,
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WORD8 shift2) {
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WORD32 i;
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WORD32 *rsrc2 = src2 + vlen - 1;
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if (shift1 > shift2) {
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for (i = 0; i < vlen / 2; i++) {
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*dest = ixheaacd_add32_sat(
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((ixheaacd_mult32_sh1(*src1, *win_fwd)) >> (shift1 - shift2)),
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ixheaacd_mult32_sh1(*src2, *win_rev));
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*(dest + (vlen - (2 * i)) - 1) = ixheaacd_add32_sat(
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((ixheaacd_mult32_sh1(ixheaacd_negate32_sat(*src1), *win_rev)) >>
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(shift1 - shift2)),
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ixheaacd_mult32_sh1(*rsrc2, *win_fwd));
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src1++;
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src2++;
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win_fwd++;
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win_rev--;
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rsrc2--;
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dest++;
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}
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return (shift2);
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} else {
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for (i = 0; i < vlen / 2; i++) {
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*dest = ixheaacd_add32_sat(
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ixheaacd_mult32_sh1(*src1, *win_fwd),
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((ixheaacd_mult32_sh1(*src2, *win_rev)) >> (shift2 - shift1)));
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*(dest + (vlen - (2 * i)) - 1) = ixheaacd_add32_sat(
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ixheaacd_mult32_sh1(ixheaacd_negate32_sat(*src1), *win_rev),
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((ixheaacd_mult32_sh1(*rsrc2, *win_fwd)) >> (shift2 - shift1)));
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src1++;
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src2++;
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win_fwd++;
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win_rev--;
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rsrc2--;
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dest++;
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}
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return (shift1);
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}
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}
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WORD8 ixheaacd_windowing_long2(WORD32 *src1, const WORD32 *win_fwd,
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WORD32 *fac_data_out, WORD32 *over_lap,
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WORD32 *p_out_buffer,
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offset_lengths *ixheaacd_drc_offset,
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WORD8 shiftp, WORD8 shift_olap, WORD8 fac_q) {
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WORD32 i;
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WORD32 *dest = p_out_buffer;
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win_fwd += ixheaacd_drc_offset->lfac;
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if (shiftp > fac_q) {
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if (shift_olap > fac_q) {
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for (i = 0;
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i < ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->lfac;
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i++) {
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dest[i] = over_lap[i] >> (shift_olap - fac_q);
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}
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for (i = ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->lfac;
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i < ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->n_trans_ls;
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i++) {
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dest[i] = ixheaacd_add32_sat(
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(ixheaacd_mult32_sh1(
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ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_long / 2 +
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ixheaacd_drc_offset->n_flat_ls +
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ixheaacd_drc_offset->lfac - i - 1]),
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*win_fwd) >>
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(shiftp - fac_q)),
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(*fac_data_out));
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win_fwd++;
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fac_data_out++;
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}
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for (;
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i < ixheaacd_drc_offset->n_flat_ls + (ixheaacd_drc_offset->lfac * 3);
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i++) {
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dest[i] = ixheaacd_add32_sat(
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(ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_long / 2 +
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ixheaacd_drc_offset->n_flat_ls +
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ixheaacd_drc_offset->lfac - i - 1]) >>
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(shiftp - fac_q)),
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(*fac_data_out));
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fac_data_out++;
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}
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for (; i < ixheaacd_drc_offset->n_long; i++) {
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dest[i] =
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ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_long / 2 +
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ixheaacd_drc_offset->n_flat_ls +
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ixheaacd_drc_offset->lfac - i - 1]) >>
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(shiftp - fac_q);
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}
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return (fac_q);
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} else {
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memcpy(dest, over_lap, sizeof(WORD32) * (ixheaacd_drc_offset->n_flat_ls +
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ixheaacd_drc_offset->lfac));
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for (i = ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->lfac;
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i < ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->n_trans_ls;
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i++) {
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dest[i] = ixheaacd_add32_sat(
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(ixheaacd_mult32_sh1(
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ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_long / 2 +
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ixheaacd_drc_offset->n_flat_ls +
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ixheaacd_drc_offset->lfac - i - 1]),
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*win_fwd) >>
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(shiftp - shift_olap)),
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(*fac_data_out) >> (fac_q - shift_olap));
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win_fwd++;
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fac_data_out++;
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}
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for (;
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i < ixheaacd_drc_offset->n_flat_ls + (ixheaacd_drc_offset->lfac * 3);
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i++) {
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dest[i] = ixheaacd_add32_sat(
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(ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_long / 2 +
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ixheaacd_drc_offset->n_flat_ls +
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ixheaacd_drc_offset->lfac - i - 1]) >>
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(shiftp - shift_olap)),
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(*fac_data_out) >> (fac_q - shift_olap));
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fac_data_out++;
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}
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for (; i < ixheaacd_drc_offset->n_long; i++) {
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dest[i] =
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ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_long / 2 +
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ixheaacd_drc_offset->n_flat_ls +
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ixheaacd_drc_offset->lfac - i - 1]) >>
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(shiftp - shift_olap);
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}
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return (shift_olap);
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}
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} else {
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if (shift_olap > shiftp) {
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for (i = 0;
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i < ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->lfac;
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i++) {
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dest[i] = over_lap[i] >> (shift_olap - shiftp);
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}
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for (i = ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->lfac;
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i < ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->n_trans_ls;
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i++) {
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dest[i] = ixheaacd_add32_sat(
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ixheaacd_mult32_sh1(
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ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_long / 2 +
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ixheaacd_drc_offset->n_flat_ls +
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ixheaacd_drc_offset->lfac - i - 1]),
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*win_fwd),
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(*fac_data_out) >> (fac_q - shiftp));
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win_fwd++;
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fac_data_out++;
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}
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for (;
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i < ixheaacd_drc_offset->n_flat_ls + (ixheaacd_drc_offset->lfac * 3);
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i++) {
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dest[i] = ixheaacd_add32_sat(
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ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_long / 2 +
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ixheaacd_drc_offset->n_flat_ls +
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ixheaacd_drc_offset->lfac - i - 1]),
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(*fac_data_out) >> (fac_q - shiftp));
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fac_data_out++;
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}
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for (; i < ixheaacd_drc_offset->n_long; i++) {
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dest[i] =
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ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_long / 2 +
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ixheaacd_drc_offset->n_flat_ls +
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ixheaacd_drc_offset->lfac - i - 1]);
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}
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return (shiftp);
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} else {
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memcpy(dest, over_lap, sizeof(WORD32) * (ixheaacd_drc_offset->n_flat_ls +
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ixheaacd_drc_offset->lfac));
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for (i = ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->lfac;
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i < ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->n_trans_ls;
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i++) {
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dest[i] = ixheaacd_add32_sat(
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(ixheaacd_mult32_sh1(
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ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_long / 2 +
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ixheaacd_drc_offset->n_flat_ls +
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ixheaacd_drc_offset->lfac - i - 1]),
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*win_fwd) >>
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(shiftp - shift_olap)),
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(*fac_data_out) >> (fac_q - shift_olap));
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win_fwd++;
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fac_data_out++;
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}
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for (;
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i < ixheaacd_drc_offset->n_flat_ls + (ixheaacd_drc_offset->lfac * 3);
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i++) {
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dest[i] = ixheaacd_add32_sat(
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(ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_long / 2 +
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ixheaacd_drc_offset->n_flat_ls +
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ixheaacd_drc_offset->lfac - i - 1]) >>
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(shiftp - shift_olap)),
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(*fac_data_out) >> (fac_q - shift_olap));
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fac_data_out++;
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}
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for (; i < ixheaacd_drc_offset->n_long; i++) {
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dest[i] =
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ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_long / 2 +
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ixheaacd_drc_offset->n_flat_ls +
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ixheaacd_drc_offset->lfac - i - 1]) >>
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(shiftp - shift_olap);
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}
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return (shift_olap);
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}
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}
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}
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WORD8 ixheaacd_windowing_long3(WORD32 *src1, const WORD32 *win_fwd,
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WORD32 *over_lap, WORD32 *p_out_buffer,
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const WORD32 *win_rev,
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offset_lengths *ixheaacd_drc_offset,
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WORD8 shiftp, WORD8 shift_olap) {
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WORD32 i;
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WORD32 *dest = p_out_buffer;
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if (shiftp > shift_olap) {
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memcpy(dest, over_lap, sizeof(FLOAT32) * ixheaacd_drc_offset->n_flat_ls);
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for (i = ixheaacd_drc_offset->n_flat_ls;
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i < ixheaacd_drc_offset->n_long / 2; i++) {
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dest[i] = ixheaacd_add32_sat(
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(ixheaacd_mult32_sh1(src1[i], *win_fwd) >> (shiftp - shift_olap)),
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ixheaacd_mult32_sh1(over_lap[i], *win_rev));
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win_fwd++;
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win_rev--;
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}
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for (i = ixheaacd_drc_offset->n_long / 2;
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i < ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->n_trans_ls;
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i++) {
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dest[i] = ixheaacd_add32_sat(
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(ixheaacd_mult32_sh1(
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ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_long - i - 1]),
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*win_fwd) >>
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(shiftp - shift_olap)),
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ixheaacd_mult32_sh1(over_lap[i], *win_rev));
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win_fwd++;
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win_rev--;
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}
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for (; i < ixheaacd_drc_offset->n_long; i++) {
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dest[i] =
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ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_long - i - 1]) >>
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(shiftp - shift_olap);
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}
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return (shift_olap);
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} else {
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for (i = 0; i < ixheaacd_drc_offset->n_flat_ls; i++) {
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dest[i] = over_lap[i] >> (shift_olap - shiftp);
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}
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for (i = ixheaacd_drc_offset->n_flat_ls;
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i < ixheaacd_drc_offset->n_long / 2; i++) {
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dest[i] = ixheaacd_add32_sat(
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ixheaacd_mult32_sh1(src1[i], *win_fwd),
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ixheaacd_mult32_sh1(over_lap[i], *win_rev) >> (shift_olap - shiftp));
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win_fwd++;
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win_rev--;
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}
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for (i = ixheaacd_drc_offset->n_long / 2;
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i < ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->n_trans_ls;
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i++) {
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dest[i] = ixheaacd_add32_sat(
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ixheaacd_mult32_sh1(
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ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_long - i - 1]),
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*win_fwd),
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ixheaacd_mult32_sh1(over_lap[i], *win_rev) >> (shift_olap - shiftp));
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win_fwd++;
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win_rev--;
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}
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for (; i < ixheaacd_drc_offset->n_long; i++) {
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dest[i] =
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ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_long - i - 1]);
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}
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return (shiftp);
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}
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}
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VOID ixheaacd_windowing_short1(WORD32 *src1, WORD32 *src2, WORD32 *fp,
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offset_lengths *ixheaacd_drc_offset,
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WORD8 shiftp, WORD8 shift_olap) {
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WORD32 i;
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WORD32 *dest = fp;
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if (shift_olap > shiftp) {
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if (ixheaacd_drc_offset->n_short > ixheaacd_drc_offset->lfac) {
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for (i = 0; i < ixheaacd_drc_offset->lfac; i++) {
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dest[i] = dest[i] >> (shift_olap - shiftp);
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}
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for (i = ixheaacd_drc_offset->lfac; i < ixheaacd_drc_offset->n_short;
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i++) {
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dest[i] = ixheaacd_mult32_sh1(
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ixheaacd_negate32_sat(src1[ixheaacd_drc_offset->n_short - i - 1]),
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src2[i]);
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}
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for (; i < ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->lfac;
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i++) {
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dest[i] = 0;
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}
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} else {
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for (i = 0; i < ixheaacd_drc_offset->lfac; i++) {
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dest[i] = dest[i] >> (shift_olap - shiftp);
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}
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for (i = ixheaacd_drc_offset->lfac;
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i < ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->lfac;
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i++) {
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dest[i] = 0;
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}
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}
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} else {
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if (ixheaacd_drc_offset->n_short > ixheaacd_drc_offset->lfac) {
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for (i = ixheaacd_drc_offset->lfac; i < ixheaacd_drc_offset->n_short;
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i++) {
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dest[i] =
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ixheaacd_mult32_sh1(ixheaacd_negate32_sat(
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src1[ixheaacd_drc_offset->n_short - i - 1]),
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src2[i]) >>
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(shiftp - shift_olap);
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}
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for (; i < ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->lfac;
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i++) {
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dest[i] = 0;
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}
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} else {
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for (i = ixheaacd_drc_offset->lfac;
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i < ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->lfac;
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i++) {
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dest[i] = 0;
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}
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}
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}
|
|
}
|
|
|
|
VOID ixheaacd_windowing_short2(WORD32 *src1, WORD32 *win_fwd, WORD32 *fp,
|
|
offset_lengths *ixheaacd_drc_offset,
|
|
WORD8 shiftp, WORD8 shift_olap) {
|
|
WORD32 i;
|
|
|
|
WORD32 *win_rev = win_fwd + ixheaacd_drc_offset->n_short - 1;
|
|
|
|
if (shift_olap > shiftp) {
|
|
for (i = 0; i < ixheaacd_drc_offset->n_short / 2; i++) {
|
|
fp[i] = ixheaacd_add32_sat(
|
|
ixheaacd_mult32_sh1(src1[i], *win_fwd),
|
|
(ixheaacd_mult32_sh1(fp[i], *win_rev) >> (shift_olap - shiftp)));
|
|
|
|
fp[ixheaacd_drc_offset->n_short - i - 1] = ixheaacd_add32_sat(
|
|
ixheaacd_mult32_sh1(ixheaacd_negate32_sat(src1[i]), *win_rev),
|
|
(ixheaacd_mult32_sh1(fp[ixheaacd_drc_offset->n_short - i - 1],
|
|
*win_fwd) >>
|
|
(shift_olap - shiftp)));
|
|
win_fwd++;
|
|
win_rev--;
|
|
}
|
|
|
|
for (i = ixheaacd_drc_offset->n_short;
|
|
i < ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->n_short;
|
|
i++) {
|
|
fp[i] = 0;
|
|
}
|
|
} else {
|
|
for (i = 0; i < ixheaacd_drc_offset->n_short / 2; i++) {
|
|
fp[i] = ixheaacd_add32_sat(
|
|
(ixheaacd_mult32_sh1(src1[i], *win_fwd) >> (shiftp - shift_olap)),
|
|
ixheaacd_mult32_sh1(fp[i], *win_rev));
|
|
|
|
fp[ixheaacd_drc_offset->n_short - i - 1] = ixheaacd_add32_sat(
|
|
(ixheaacd_mult32_sh1(ixheaacd_negate32_sat(src1[i]), *win_rev) >>
|
|
(shiftp - shift_olap)),
|
|
ixheaacd_mult32_sh1(fp[ixheaacd_drc_offset->n_short - i - 1],
|
|
*win_fwd));
|
|
|
|
win_fwd++;
|
|
win_rev--;
|
|
}
|
|
|
|
for (i = ixheaacd_drc_offset->n_short;
|
|
i < ixheaacd_drc_offset->n_flat_ls + ixheaacd_drc_offset->n_short;
|
|
i++) {
|
|
fp[i] = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
WORD8 ixheaacd_windowing_short3(WORD32 *src1, WORD32 *win_rev, WORD32 *fp,
|
|
WORD32 n_short, WORD8 shiftp,
|
|
WORD8 shift_olap) {
|
|
WORD32 i;
|
|
const WORD32 *win_fwd = win_rev - n_short + 1;
|
|
if (shift_olap > shiftp) {
|
|
for (i = 0; i < n_short / 2; i++) {
|
|
fp[i] = ixheaacd_add32_sat(
|
|
ixheaacd_mult32_sh1(ixheaacd_negate32_sat(src1[n_short / 2 - i - 1]),
|
|
*win_rev),
|
|
(fp[i] >> (shift_olap - shiftp)));
|
|
|
|
fp[n_short - i - 1] = ixheaacd_add32_sat(
|
|
ixheaacd_mult32_sh1(ixheaacd_negate32_sat(src1[n_short / 2 - i - 1]),
|
|
*win_fwd),
|
|
(fp[n_short - i - 1] >> (shift_olap - shiftp)));
|
|
win_rev--;
|
|
win_fwd++;
|
|
}
|
|
return (shiftp);
|
|
} else {
|
|
for (i = 0; i < n_short / 2; i++) {
|
|
fp[i] = ixheaacd_add32_sat(
|
|
(ixheaacd_mult32_sh1(ixheaacd_negate32_sat(src1[n_short / 2 - i - 1]),
|
|
*win_rev) >>
|
|
(shiftp - shift_olap)),
|
|
fp[i]);
|
|
|
|
fp[n_short - i - 1] = ixheaacd_add32_sat(
|
|
(ixheaacd_mult32_sh1(ixheaacd_negate32_sat(src1[n_short / 2 - i - 1]),
|
|
*win_fwd) >>
|
|
(shiftp - shift_olap)),
|
|
fp[n_short - i - 1]);
|
|
|
|
win_rev--;
|
|
win_fwd++;
|
|
}
|
|
return (shift_olap);
|
|
}
|
|
}
|
|
|
|
WORD8 ixheaacd_windowing_short4(WORD32 *src1, WORD32 *win_fwd, WORD32 *fp,
|
|
WORD32 *win_fwd1, WORD32 n_short, WORD32 flag,
|
|
WORD8 shiftp, WORD8 shift_olap,
|
|
WORD8 output_q) {
|
|
WORD32 i;
|
|
const WORD32 *win_rev = win_fwd + n_short - 1;
|
|
const WORD32 *win_rev1 = win_fwd1 - n_short + 1;
|
|
if (shift_olap > output_q) {
|
|
for (i = 0; i < n_short / 2; i++) {
|
|
fp[i] = ixheaacd_add32_sat(
|
|
ixheaacd_mult32_sh1(src1[n_short / 2 + i], *win_fwd) >>
|
|
(shiftp - output_q),
|
|
fp[i]);
|
|
|
|
fp[n_short - i - 1] = ixheaacd_add32_sat(
|
|
ixheaacd_mult32_sh1(ixheaacd_negate32_sat(src1[n_short / 2 + i]),
|
|
*win_rev) >>
|
|
(shiftp - output_q),
|
|
fp[n_short - i - 1]);
|
|
|
|
win_fwd++;
|
|
win_rev--;
|
|
}
|
|
if (flag == 1) {
|
|
for (; i < n_short; i++) {
|
|
fp[i + n_short / 2] = ixheaacd_add32_sat(
|
|
ixheaacd_mult32_sh1(ixheaacd_negate32_sat(src1[n_short - i - 1]),
|
|
*win_fwd1) >>
|
|
(shiftp - output_q),
|
|
(fp[i + n_short / 2] >> (shift_olap - output_q)));
|
|
|
|
fp[3 * n_short - n_short / 2 - i - 1] = ixheaacd_add32_sat(
|
|
ixheaacd_mult32_sh1(ixheaacd_negate32_sat(src1[n_short - i - 1]),
|
|
*win_rev1) >>
|
|
(shiftp - output_q),
|
|
(fp[3 * n_short - n_short / 2 - i - 1] >> (shift_olap - output_q)));
|
|
|
|
win_fwd1--;
|
|
win_rev1++;
|
|
}
|
|
} else {
|
|
for (; i < n_short; i++) {
|
|
fp[i + n_short / 2] = ixheaacd_add32_sat(
|
|
ixheaacd_negate32_sat(src1[n_short - i - 1]) >> (shiftp - output_q),
|
|
fp[i + n_short / 2] >> (shift_olap - output_q));
|
|
fp[3 * n_short - n_short / 2 - i - 1] = ixheaacd_add32_sat(
|
|
ixheaacd_negate32_sat(src1[n_short - i - 1]) >> (shiftp - output_q),
|
|
fp[3 * n_short - n_short / 2 - i - 1] >> (shift_olap - output_q));
|
|
}
|
|
}
|
|
return (output_q);
|
|
} else {
|
|
for (i = 0; i < n_short / 2; i++) {
|
|
fp[i] = ixheaacd_add32_sat(
|
|
ixheaacd_mult32_sh1(src1[n_short / 2 + i], *win_fwd) >>
|
|
(shiftp - shift_olap),
|
|
fp[i] >> (output_q - shift_olap));
|
|
|
|
fp[n_short - i - 1] = ixheaacd_add32_sat(
|
|
ixheaacd_mult32_sh1(ixheaacd_negate32_sat(src1[n_short / 2 + i]),
|
|
*win_rev) >>
|
|
(shiftp - shift_olap),
|
|
fp[n_short - i - 1]);
|
|
|
|
win_fwd++;
|
|
win_rev--;
|
|
}
|
|
if (flag == 1) {
|
|
for (; i < n_short; i++) {
|
|
fp[i + n_short / 2] = ixheaacd_add32_sat(
|
|
ixheaacd_mult32_sh1(ixheaacd_negate32_sat(src1[n_short - i - 1]),
|
|
*win_fwd1) >>
|
|
(shiftp - shift_olap),
|
|
fp[i + n_short / 2]);
|
|
|
|
fp[3 * n_short - n_short / 2 - i - 1] = ixheaacd_add32_sat(
|
|
ixheaacd_mult32_sh1(ixheaacd_negate32_sat(src1[n_short - i - 1]),
|
|
*win_rev1) >>
|
|
(shiftp - shift_olap),
|
|
fp[3 * n_short - n_short / 2 - i - 1]);
|
|
|
|
win_fwd1--;
|
|
win_rev1++;
|
|
}
|
|
} else {
|
|
for (; i < n_short; i++) {
|
|
fp[i + n_short / 2] =
|
|
ixheaacd_add32_sat(ixheaacd_negate32_sat(src1[n_short - i - 1]) >>
|
|
(shiftp - shift_olap),
|
|
fp[i + n_short / 2]);
|
|
fp[3 * n_short - n_short / 2 - i - 1] =
|
|
ixheaacd_add32_sat(ixheaacd_negate32_sat(src1[n_short - i - 1]) >>
|
|
(shiftp - shift_olap),
|
|
fp[3 * n_short - n_short / 2 - i - 1]);
|
|
}
|
|
}
|
|
return (shift_olap);
|
|
}
|
|
}
|
|
|
|
VOID ixheaacd_scale_down(WORD32 *dest, WORD32 *src, WORD32 len, WORD8 shift1,
|
|
WORD8 shift2) {
|
|
WORD32 i;
|
|
if (shift1 > shift2) {
|
|
for (i = 0; i < len; i++) {
|
|
*dest = *src >> (shift1 - shift2);
|
|
src++;
|
|
dest++;
|
|
}
|
|
} else {
|
|
for (i = 0; i < len; i++) {
|
|
*dest = ixheaacd_shl32_sat((*src), (shift2 - shift1));
|
|
src++;
|
|
dest++;
|
|
}
|
|
}
|
|
}
|
|
|
|
VOID ixheaacd_scale_down_adj(WORD32 *dest, WORD32 *src, WORD32 len,
|
|
WORD8 shift1, WORD8 shift2) {
|
|
WORD32 i;
|
|
if (shift1 > shift2) {
|
|
for (i = 0; i < len; i++) {
|
|
*dest = ixheaacd_add32_sat((*src >> (shift1 - shift2)), ADJ_SCALE);
|
|
src++;
|
|
dest++;
|
|
}
|
|
} else {
|
|
for (i = 0; i < len; i++) {
|
|
*dest = ixheaacd_add32_sat(ixheaacd_shl32_sat((*src), (shift2 - shift1)),
|
|
ADJ_SCALE);
|
|
src++;
|
|
dest++;
|
|
}
|
|
}
|
|
}
|