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android13/external/libxaac/decoder/ixheaacd_hybrid.c

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/******************************************************************************
* *
* 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 <string.h>
#include "ixheaacd_sbr_common.h"
#include "ixheaacd_type_def.h"
#include "ixheaacd_constants.h"
#include "ixheaacd_basic_ops32.h"
#include "ixheaacd_basic_ops16.h"
#include "ixheaacd_basic_ops40.h"
#include "ixheaacd_basic_ops.h"
#include "ixheaacd_basic_op.h"
#include "ixheaacd_intrinsics.h"
#include "ixheaacd_common_rom.h"
#include "ixheaacd_basic_funcs.h"
#include "ixheaacd_bitbuffer.h"
#include "ixheaacd_sbrdecsettings.h"
#include "ixheaacd_sbr_scale.h"
#include "ixheaacd_lpp_tran.h"
#include "ixheaacd_env_extr_part.h"
#include "ixheaacd_sbr_rom.h"
#include "ixheaacd_hybrid.h"
#include "ixheaacd_ps_dec.h"
#include "ixheaacd_env_extr.h"
#include "ixheaacd_dsp_fft32x32s.h"
#include "ixheaacd_function_selector.h"
static VOID ixheaacd_filt_2_ch(const WORD32 *ptr_qmf, WORD32 *ptr_hybrid,
ia_sbr_tables_struct *ptr_sbr_tables) {
WORD32 cum0, cum1, cum00, cum11;
WORD16 *p2_6 = ptr_sbr_tables->ps_tables_ptr->p2_6;
cum0 = ptr_qmf[HYBRID_FILTER_DELAY] >> 1;
cum00 = ptr_qmf[HYBRID_FILTER_DELAY + 16] >> 1;
cum1 = 0L;
cum11 = 0L;
{
cum1 = ixheaacd_add32_sat(cum1, ixheaacd_mult32x16in32(ptr_qmf[1], *p2_6));
cum11 =
ixheaacd_add32_sat(cum11, ixheaacd_mult32x16in32(ptr_qmf[17], *p2_6++));
cum1 = ixheaacd_add32_sat(cum1, ixheaacd_mult32x16in32(ptr_qmf[3], *p2_6));
cum11 =
ixheaacd_add32_sat(cum11, ixheaacd_mult32x16in32(ptr_qmf[19], *p2_6++));
cum1 = ixheaacd_add32_sat(cum1, ixheaacd_mult32x16in32(ptr_qmf[5], *p2_6));
cum11 =
ixheaacd_add32_sat(cum11, ixheaacd_mult32x16in32(ptr_qmf[21], *p2_6++));
cum1 = ixheaacd_add32_sat(cum1, ixheaacd_mult32x16in32(ptr_qmf[7], *p2_6));
cum11 =
ixheaacd_add32_sat(cum11, ixheaacd_mult32x16in32(ptr_qmf[23], *p2_6++));
cum1 = ixheaacd_add32_sat(cum1, ixheaacd_mult32x16in32(ptr_qmf[9], *p2_6));
cum11 =
ixheaacd_add32_sat(cum11, ixheaacd_mult32x16in32(ptr_qmf[25], *p2_6++));
cum1 = ixheaacd_add32_sat(cum1, ixheaacd_mult32x16in32(ptr_qmf[11], *p2_6));
cum11 =
ixheaacd_add32_sat(cum11, ixheaacd_mult32x16in32(ptr_qmf[27], *p2_6++));
}
cum1 = ixheaacd_shl32(cum1, 1);
cum11 = ixheaacd_shl32(cum11, 1);
ptr_hybrid[0] = ixheaacd_add32_sat(cum0, cum1);
ptr_hybrid[1] = ixheaacd_sub32_sat(cum0, cum1);
ptr_hybrid[16] = ixheaacd_add32_sat(cum00, cum11);
ptr_hybrid[17] = ixheaacd_sub32_sat(cum00, cum11);
}
static VOID ixheaacd_filt_8_ch(const WORD32 *ptr_qmf_real,
const WORD32 *ptr_qmf_imag, WORD32 *ptr_hyb_real,
WORD32 *ptr_hyb_imag,
ia_sbr_tables_struct *ptr_sbr_tables) {
const WORD16 tcos = 0x7642;
const WORD16 tsin = 0x30fc;
const WORD16 tcom = 0x5a82;
WORD32 real, imag;
WORD32 cum[16];
const WORD16 *p8_13 = ptr_sbr_tables->ps_tables_ptr->p8_13;
const WORD16 *p8_13_8 = ptr_sbr_tables->ps_tables_ptr->p8_13 + 8;
real = ixheaacd_shl32(
ixheaacd_add32_sat(ixheaacd_mult32x16in32(ptr_qmf_real[0], *p8_13),
ixheaacd_mult32x16in32(ptr_qmf_real[8], *p8_13_8)),
1);
imag = ixheaacd_shl32(
ixheaacd_add32_sat(ixheaacd_mult32x16in32(ptr_qmf_imag[0], *p8_13++),
ixheaacd_mult32x16in32(ptr_qmf_imag[8], *p8_13_8++)),
1);
cum[12] = ixheaacd_shl32(
ixheaacd_mult32x16in32(ixheaacd_add32_sat(imag, real), tcom), 1);
cum[13] = ixheaacd_shl32(
ixheaacd_mult32x16in32(ixheaacd_sub32_sat(imag, real), tcom), 1);
real = ixheaacd_shl32(
ixheaacd_add32_sat(ixheaacd_mult32x16in32(ptr_qmf_real[1], *p8_13),
ixheaacd_mult32x16in32(ptr_qmf_real[9], *p8_13_8)),
1);
imag = ixheaacd_shl32(
ixheaacd_add32_sat(ixheaacd_mult32x16in32(ptr_qmf_imag[1], *p8_13++),
ixheaacd_mult32x16in32(ptr_qmf_imag[9], *p8_13_8++)),
1);
cum[10] =
ixheaacd_shl32(ixheaacd_add32_sat(ixheaacd_mult32x16in32(imag, tcos),
ixheaacd_mult32x16in32(real, tsin)),
1);
cum[11] =
ixheaacd_shl32(ixheaacd_sub32_sat(ixheaacd_mult32x16in32(imag, tsin),
ixheaacd_mult32x16in32(real, tcos)),
1);
cum[9] = ixheaacd_shl32(
ixheaacd_mult32x16in32(
ixheaacd_sub32_sat(ptr_qmf_real[2], ptr_qmf_real[10]), *p8_13_8++),
1);
cum[8] = ixheaacd_shl32(
ixheaacd_mult32x16in32(
ixheaacd_sub32_sat(ptr_qmf_imag[2], ptr_qmf_imag[10]), *p8_13++),
1);
real = ixheaacd_shl32(
ixheaacd_add32_sat(ixheaacd_mult32x16in32(ptr_qmf_real[3], *p8_13),
ixheaacd_mult32x16in32(ptr_qmf_real[11], *p8_13_8)),
1);
imag = ixheaacd_shl32(
ixheaacd_add32_sat(ixheaacd_mult32x16in32(ptr_qmf_imag[3], *p8_13++),
ixheaacd_mult32x16in32(ptr_qmf_imag[11], *p8_13_8++)),
1);
cum[6] =
ixheaacd_shl32(ixheaacd_sub32_sat(ixheaacd_mult32x16in32(imag, tcos),
ixheaacd_mult32x16in32(real, tsin)),
1);
cum[7] = ixheaacd_shl32(ixheaacd_negate32_sat(ixheaacd_add32_sat(
ixheaacd_mult32x16in32(imag, tsin),
ixheaacd_mult32x16in32(real, tcos))),
1);
real = ixheaacd_shl32(
ixheaacd_add32_sat(ixheaacd_mult32x16in32(ptr_qmf_real[4], *p8_13),
ixheaacd_mult32x16in32(ptr_qmf_real[12], *p8_13_8)),
1);
imag = ixheaacd_shl32(
ixheaacd_add32_sat(ixheaacd_mult32x16in32(ptr_qmf_imag[4], *p8_13++),
ixheaacd_mult32x16in32(ptr_qmf_imag[12], *p8_13_8++)),
1);
cum[4] = ixheaacd_shl32(
ixheaacd_mult32x16in32(ixheaacd_sub32_sat(imag, real), tcom), 1);
cum[5] = ixheaacd_shl32(
ixheaacd_mult32x16in32(
ixheaacd_negate32_sat(ixheaacd_add32_sat(imag, real)), tcom),
1);
real = ixheaacd_shl32(ixheaacd_mult32x16in32(ptr_qmf_real[5], *p8_13), 1);
imag = ixheaacd_shl32(ixheaacd_mult32x16in32(ptr_qmf_imag[5], *p8_13++), 1);
cum[2] =
ixheaacd_shl32(ixheaacd_sub32_sat(ixheaacd_mult32x16in32(real, tcos),
ixheaacd_mult32x16in32(imag, tsin)),
1);
cum[3] =
ixheaacd_shl32(ixheaacd_add32_sat(ixheaacd_mult32x16in32(real, tsin),
ixheaacd_mult32x16in32(imag, tcos)),
1);
cum[0] = ixheaacd_shl32(
ixheaacd_mult32x16in32(ptr_qmf_real[HYBRID_FILTER_DELAY], *p8_13), 1);
cum[1] = ixheaacd_shl32(
ixheaacd_mult32x16in32(ptr_qmf_imag[HYBRID_FILTER_DELAY], *p8_13++), 1);
real = ixheaacd_shl32(ixheaacd_mult32x16in32(ptr_qmf_real[7], *p8_13), 1);
imag = ixheaacd_shl32(ixheaacd_mult32x16in32(ptr_qmf_imag[7], *p8_13++), 1);
cum[14] =
ixheaacd_shl32(ixheaacd_add32_sat(ixheaacd_mult32x16in32(imag, tsin),
ixheaacd_mult32x16in32(real, tcos)),
1);
cum[15] =
ixheaacd_shl32(ixheaacd_sub32_sat(ixheaacd_mult32x16in32(imag, tcos),
ixheaacd_mult32x16in32(real, tsin)),
1);
(*ixheaacd_inv_dit_fft_8pt)(cum, ptr_hyb_real, ptr_hyb_imag);
}
VOID ixheaacd_hybrid_analysis(const WORD32 *ptr_qmf_real, WORD32 *ptr_hyb_real,
WORD32 *ptr_hyb_imag,
ia_hybrid_struct *ptr_hybrid, WORD16 scale,
ia_sbr_tables_struct *ptr_sbr_tables)
{
WORD band, j;
WORD chn_offset = 0;
WORD32 *ptr_re, *ptr_im;
WORD32 *ptr_temp_real, *ptr_temp_imag;
for (band = 0; band < NO_QMF_CHANNELS_IN_HYBRID; band++) {
ptr_re = ptr_hybrid->ptr_qmf_buf_re[band];
ptr_im = ptr_hybrid->ptr_qmf_buf_im[band];
ptr_temp_real = &ptr_hybrid->ptr_work_re[0];
ptr_temp_imag = &ptr_hybrid->ptr_work_im[0];
*ptr_temp_real = *ptr_re;
*ptr_temp_imag = *ptr_im;
ptr_temp_real++;
ptr_re++;
ptr_temp_imag++;
ptr_im++;
for (j = ptr_hybrid->ptr_qmf_buf - 2; j >= 0; j--) {
*ptr_temp_real++ = *ptr_re;
*(ptr_re - 1) = *ptr_re;
ptr_re++;
*ptr_temp_imag++ = *ptr_im;
*(ptr_im - 1) = *ptr_im;
ptr_im++;
}
{
WORD32 temp_re = ptr_qmf_real[band];
WORD32 temp_im = ptr_qmf_real[band + 0x40];
if (scale < 0) {
temp_re = ixheaacd_shl32(temp_re, -scale);
temp_im = ixheaacd_shl32(temp_im, -scale);
} else {
temp_re = ixheaacd_shr32(temp_re, scale);
temp_im = ixheaacd_shr32(temp_im, scale);
}
*ptr_temp_real = temp_re;
*--ptr_re = temp_re;
*ptr_temp_imag = temp_im;
*--ptr_im = temp_im;
}
switch (ptr_hybrid->ptr_resol[band]) {
case NO_HYBRID_CHANNELS_LOW:
ixheaacd_filt_2_ch(ptr_hybrid->ptr_work_re, &ptr_hyb_real[chn_offset],
ptr_sbr_tables);
chn_offset += 2;
break;
case NO_HYBRID_CHANNELS_HIGH:
ixheaacd_filt_8_ch(ptr_hybrid->ptr_work_re, ptr_hybrid->ptr_work_im,
&ptr_hyb_real[chn_offset], &ptr_hyb_imag[chn_offset],
ptr_sbr_tables);
chn_offset += 6;
}
}
}
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