/******************************************************************************
* *
* 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 "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_common_rom.h"
#include "ixheaacd_basic_funcs.h"
#include "ixheaacd_defines.h"
#include <ixheaacd_aac_rom.h>
#include "ixheaacd_bitbuffer.h"
#include "ixheaacd_intrinsics.h"
#include "ixheaacd_pulsedata.h"
#include "ixheaacd_pns.h"
#include "ixheaacd_drc_data_struct.h"
#include "ixheaacd_lt_predict.h"
#include "ixheaacd_channelinfo.h"
#include "ixheaacd_drc_dec.h"
#include "ixheaacd_block.h"
#include "ixheaacd_channel.h"
#include <ixheaacd_basic_op.h>
#include "ixheaacd_tns.h"
#include "ixheaacd_sbrdecoder.h"
#include "ixheaacd_error_codes.h"
#include "ixheaacd_audioobjtypes.h"
#include "ixheaacd_latmdemux.h"
#include "ixheaacd_aacdec.h"
static PLATFORM_INLINE WORD32 ixheaacd_shr32_drc(WORD32 a, WORD32 b) {
WORD32 out_val;
b = ((UWORD32)(b << 24) >> 24);
if (b >= 31) {
if (a < 0)
out_val = -1;
else
out_val = 0;
} else {
a += (1 << (b - 1));
out_val = (WORD32)a >> b;
}
return out_val;
}
static PLATFORM_INLINE WORD32 ixheaacd_mult32x16in32_drc(WORD32 a, WORD16 b) {
WORD32 result;
WORD64 temp_result;
temp_result = (WORD64)a * (WORD64)b;
if (temp_result < (WORD64)MIN_32)
result = MIN_32;
else if (temp_result > (WORD64)MAX_32)
result = MAX_32;
else
result = (WORD32)(temp_result);
return (result);
}
static PLATFORM_INLINE WORD32 ixheaacd_mac32x16in32_drc(WORD32 a, WORD32 b,
WORD16 c) {
WORD32 acc;
acc = ixheaacd_mult32x16in32_drc(b, c);
acc = ixheaacd_add32_sat(a, acc);
return acc;
}
WORD32 ixheaacd_cnt_leading_ones(WORD32 a);
VOID ixheaacd_huff_sfb_table(WORD32 it_bit_buff, WORD16 *huff_index,
WORD32 *len, const UWORD16 *code_book_tbl,
const UWORD32 *idx_table) {
UWORD32 temp = 0;
UWORD32 temp1 = 0;
WORD32 found = 0;
UWORD32 mask = 0x80000000;
WORD32 leading_ones;
WORD32 max_len;
WORD32 ixheaacd_drc_offset = 0;
WORD32 length;
UWORD32 code_word;
WORD32 len_end;
max_len = code_book_tbl[0];
mask = mask - (1 << (31 - max_len));
mask = mask << 1;
temp = (UWORD32)((it_bit_buff & mask));
len_end = code_book_tbl[0];
leading_ones = ixheaacd_cnt_leading_ones(temp);
do {
ixheaacd_drc_offset = (idx_table[leading_ones] >> 20) & 0x1ff;
length = code_book_tbl[ixheaacd_drc_offset + 1] & 0x1f;
code_word = idx_table[leading_ones] & 0xfffff;
temp1 = temp >> (32 - length);
if (temp1 <= code_word) {
ixheaacd_drc_offset = ixheaacd_drc_offset - (code_word - temp1);
found = 1;
} else {
len_end = len_end + ((idx_table[leading_ones] >> 29) & 0x7);
leading_ones = len_end;
}
} while (!found);
*huff_index = code_book_tbl[ixheaacd_drc_offset + 1] >> 5;
*len = length;
}
VOID ixheaacd_inverse_quantize(WORD32 *x_invquant, WORD no_band,
WORD32 *ixheaacd_pow_table_Q13,
WORD8 *scratch_in) {
WORD32 j;
WORD32 temp;
WORD32 q_abs;
for (j = no_band - 1; j >= 0; j--) {
q_abs = *scratch_in++;
temp = (ixheaacd_pow_table_Q13[q_abs]);
*x_invquant++ = -temp;
}
}
static PLATFORM_INLINE WORD ixheaacd_huffman_dec_word1(
ia_bit_buf_struct *it_bit_buff, WORD32 *spec_coef, WORD16 *offsets,
WORD no_bands, WORD group_len, const UWORD16 *code_book_tbl,
WORD32 *ixheaacd_pow_table_Q13, const UWORD32 *idx_table) {
WORD32 sp1, sp2;
WORD32 flush_cw;
WORD32 i, value, norm_val, off;
WORD idx, grp_idx;
WORD32 out1, out2;
WORD32 err_code = 0;
WORD len_idx = 0;
UWORD8 *ptr_read_next = it_bit_buff->ptr_read_next;
WORD32 bit_pos = it_bit_buff->bit_pos;
WORD16 index;
WORD32 length;
WORD32 read_word;
WORD32 increment;
read_word = ixheaacd_aac_showbits_32(ptr_read_next, it_bit_buff->cnt_bits,
&increment);
ptr_read_next += increment;
do {
len_idx = offsets[1] - offsets[0];
grp_idx = group_len;
do {
spec_coef = spec_coef + offsets[0];
idx = len_idx;
do {
{
UWORD32 read_word1;
read_word1 = read_word << bit_pos;
ixheaacd_huff_sfb_table(read_word1, &index, &length, code_book_tbl,
idx_table);
bit_pos += length;
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
}
out1 = index / 17;
out2 = index - out1 * 17;
flush_cw = read_word << bit_pos;
sp1 = out1;
sp2 = out2;
if (out1) {
if (flush_cw & 0x80000000) {
out1 = -out1;
}
bit_pos++;
flush_cw = (WORD32)flush_cw << 1;
}
if (out2) {
bit_pos++;
if (flush_cw & 0x80000000) {
out2 = -out2;
}
}
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
if (sp1 == 16) {
i = 4;
value = ixheaacd_extu(read_word, bit_pos, 23);
value = value | 0xfffffe00;
norm_val = ixheaacd_norm32(value);
i += (norm_val - 22);
bit_pos += (norm_val - 21);
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
off = ixheaacd_extu(read_word, bit_pos, 32 - i);
bit_pos += i;
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
i = off + ((WORD32)1 << i);
if (i <= IQ_TABLE_SIZE_HALF)
i = ixheaacd_pow_table_Q13[i];
else {
err_code |= ixheaacd_inv_quant(&i, ixheaacd_pow_table_Q13);
}
if (out1 < 0) {
out1 = -i;
} else {
out1 = i;
}
*spec_coef++ = out1;
} else {
if (out1 <= 0) {
out1 = -out1;
out1 = ixheaacd_pow_table_Q13[out1];
*spec_coef++ = -out1;
} else {
out1 = ixheaacd_pow_table_Q13[out1];
*spec_coef++ = out1;
}
}
if (sp2 == 16) {
i = 4;
value = ixheaacd_extu(read_word, bit_pos, 23);
value = value | 0xfffffe00;
norm_val = ixheaacd_norm32(value);
i += (norm_val - 22);
bit_pos += (norm_val - 21);
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
off = ixheaacd_extu(read_word, bit_pos, 32 - i);
bit_pos += i;
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
i = off + ((WORD32)1 << i);
if (i <= IQ_TABLE_SIZE_HALF)
i = ixheaacd_pow_table_Q13[i];
else {
err_code |= ixheaacd_inv_quant(&i, ixheaacd_pow_table_Q13);
}
if (out2 < 0) {
out2 = -i;
} else {
out2 = i;
}
*spec_coef++ = out2;
} else {
if (out2 <= 0) {
out2 = -out2;
out2 = ixheaacd_pow_table_Q13[out2];
*spec_coef++ = -out2;
} else {
out2 = ixheaacd_pow_table_Q13[out2];
*spec_coef++ = out2;
}
}
idx -= 2;
} while (idx != 0);
spec_coef += (MAX_BINS_SHORT - offsets[1]);
grp_idx--;
} while (grp_idx != 0);
offsets++;
spec_coef -= (MAX_BINS_SHORT * group_len);
no_bands--;
} while (no_bands >= 0);
ptr_read_next = ptr_read_next - increment;
ixheaacd_aac_read_byte_corr1(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
it_bit_buff->bit_pos = bit_pos;
it_bit_buff->ptr_read_next = ptr_read_next;
return err_code;
}
static PLATFORM_INLINE WORD ixheaacd_huffman_dec_word2_11(
ia_bit_buf_struct *it_bit_buff, WORD32 width, const UWORD16 *code_book_tbl,
WORD32 *x_invquant, WORD32 *ixheaacd_pow_table_Q13, WORD8 *ptr_scratch,
const UWORD32 *idx_table) {
WORD32 sp1, sp2;
WORD32 flush_cw;
WORD32 i, value, norm_val, off;
WORD idx;
WORD32 out1, out2;
WORD32 err_code = 0;
WORD16 index;
WORD32 length;
UWORD8 *ptr_read_next = it_bit_buff->ptr_read_next;
WORD32 bit_pos = it_bit_buff->bit_pos;
WORD32 read_word;
WORD32 increment;
read_word = ixheaacd_aac_showbits_32(ptr_read_next, it_bit_buff->cnt_bits,
&increment);
ptr_read_next += increment;
for (idx = width; idx != 0; idx -= 2) {
{
UWORD32 read_word1;
read_word1 = read_word << bit_pos;
ixheaacd_huff_sfb_table(read_word1, &index, &length, code_book_tbl,
idx_table);
bit_pos += length;
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
}
flush_cw = read_word << bit_pos;
out1 = index / 17;
out2 = index - out1 * 17;
sp1 = out1;
if (out1) {
if (flush_cw & 0x80000000) {
out1 = -out1;
}
bit_pos++;
flush_cw = (WORD32)flush_cw << 1;
}
sp2 = out2;
if (out2) {
bit_pos++;
if (flush_cw & 0x80000000) {
out2 = -out2;
}
}
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
if (sp1 == 16) {
i = 4;
value = ixheaacd_extu(read_word, bit_pos, 23);
value = value | 0xfffffe00;
norm_val = ixheaacd_norm32(value);
i += (norm_val - 22);
bit_pos += (norm_val - 21);
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
off = ixheaacd_extu(read_word, bit_pos, 32 - i);
bit_pos += i;
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
value = *ptr_scratch++;
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
i = off + ((WORD32)1 << i);
i += value;
if (i <= IQ_TABLE_SIZE_HALF)
i = ixheaacd_pow_table_Q13[i];
else {
err_code |= ixheaacd_inv_quant(&i, ixheaacd_pow_table_Q13);
}
if (out1 < 0) {
i = -i;
}
*x_invquant++ = i;
} else {
WORD8 temp = *ptr_scratch++;
if (out1 <= 0) {
out1 = temp - out1;
out1 = ixheaacd_pow_table_Q13[out1];
*x_invquant++ = -out1;
} else {
out1 += temp;
out1 = ixheaacd_pow_table_Q13[out1];
*x_invquant++ = out1;
}
}
if (sp2 == 16) {
i = 4;
value = ixheaacd_extu(read_word, bit_pos, 23);
value = value | 0xfffffe00;
norm_val = ixheaacd_norm32(value);
i += (norm_val - 22);
bit_pos += (norm_val - 21);
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
off = ixheaacd_extu(read_word, bit_pos, 32 - i);
bit_pos += i;
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
value = *ptr_scratch++;
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
i = off + ((WORD32)1 << i);
i += value;
if (i <= IQ_TABLE_SIZE_HALF)
i = ixheaacd_pow_table_Q13[i];
else {
err_code |= ixheaacd_inv_quant(&i, ixheaacd_pow_table_Q13);
}
if (out2 < 0) {
i = -i;
}
*x_invquant++ = i;
} else {
WORD8 temp = *ptr_scratch++;
if (out2 <= 0) {
out2 = temp - out2;
out2 = ixheaacd_pow_table_Q13[out2];
*x_invquant++ = -out2;
} else {
out2 += temp;
out2 = ixheaacd_pow_table_Q13[out2];
*x_invquant++ = out2;
}
}
}
ptr_read_next = ptr_read_next - increment;
ixheaacd_aac_read_byte_corr1(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
it_bit_buff->ptr_read_next = ptr_read_next;
it_bit_buff->bit_pos = bit_pos;
return err_code;
}
static PLATFORM_INLINE WORD ixheaacd_huffman_dec_quad(
ia_bit_buf_struct *it_bit_buff, WORD32 *spec_coef, WORD16 *offsets,
WORD no_bands, WORD group_len, const UWORD16 *code_book_tbl,
WORD32 *ixheaacd_pow_table_Q13, WORD32 tbl_sign, const UWORD32 *idx_table) {
WORD idx, grp_idx;
WORD idx_len;
WORD32 *spec_orig;
WORD16 index, length;
UWORD8 *ptr_read_next = it_bit_buff->ptr_read_next;
WORD32 bit_pos = it_bit_buff->bit_pos;
WORD32 read_word;
WORD32 increment;
read_word = ixheaacd_aac_showbits_32(ptr_read_next, it_bit_buff->cnt_bits,
&increment);
ptr_read_next += increment;
spec_orig = spec_coef;
do {
idx_len = offsets[1] - offsets[0];
grp_idx = group_len;
do {
spec_coef = spec_coef + offsets[0];
idx = idx_len;
do {
UWORD32 read_word1;
read_word1 = read_word << bit_pos;
ixheaacd_huffman_decode(read_word1, &index, &length, code_book_tbl,
idx_table);
bit_pos += length;
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
if (tbl_sign) {
WORD32 temp_word;
WORD32 w, x, y, z;
temp_word = read_word << bit_pos;
w = index / 27;
index = index - w * 27;
x = index / 9;
index = index - x * 9;
y = index / 3;
z = index - y * 3;
if (w) {
w = ixheaacd_pow_table_Q13[w];
if (temp_word & 0x80000000) w = -w;
temp_word <<= 1;
bit_pos++;
}
*spec_coef++ = w;
if (x) {
x = ixheaacd_pow_table_Q13[x];
if (temp_word & 0x80000000) x = -x;
temp_word <<= 1;
bit_pos++;
}
*spec_coef++ = x;
if (y) {
y = ixheaacd_pow_table_Q13[y];
if (temp_word & 0x80000000) y = -y;
temp_word <<= 1;
bit_pos++;
}
*spec_coef++ = y;
if (z) {
z = ixheaacd_pow_table_Q13[z];
if (temp_word & 0x80000000) z = -z;
temp_word <<= 1;
bit_pos++;
}
*spec_coef++ = z;
}
else {
WORD32 w, x, y, z;
w = index / 27 - 1;
index = index - (w + 1) * 27;
x = index / 9 - 1;
index = index - (x + 1) * 9;
y = index / 3 - 1;
z = index - ((y + 1) * 3) - 1;
if (w < 0) {
w = -w;
w = ixheaacd_pow_table_Q13[w];
w = -w;
} else
w = ixheaacd_pow_table_Q13[w];
*spec_coef++ = w;
if (x < 0) {
x = -x;
x = ixheaacd_pow_table_Q13[x];
x = -x;
} else
x = ixheaacd_pow_table_Q13[x];
*spec_coef++ = x;
if (y < 0) {
y = -y;
y = ixheaacd_pow_table_Q13[y];
y = -y;
} else
y = ixheaacd_pow_table_Q13[y];
*spec_coef++ = y;
if (z < 0) {
z = -z;
z = ixheaacd_pow_table_Q13[z];
z = -z;
} else
z = ixheaacd_pow_table_Q13[z];
*spec_coef++ = z;
}
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
idx -= 4;
} while (idx != 0);
spec_coef += (MAX_BINS_SHORT - offsets[1]);
grp_idx--;
} while (grp_idx != 0);
offsets++;
spec_coef = spec_orig;
no_bands--;
} while (no_bands >= 0);
ptr_read_next = ptr_read_next - increment;
ixheaacd_aac_read_byte_corr1(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
it_bit_buff->ptr_read_next = ptr_read_next;
it_bit_buff->bit_pos = bit_pos;
return 0;
}
static PLATFORM_INLINE WORD ixheaacd_huffman_dec_word2_quad(
ia_bit_buf_struct *it_bit_buff, WORD32 width, const UWORD16 *code_book_tbl,
WORD32 *x_invquant, WORD32 *ixheaacd_pow_table_Q13, WORD8 *ptr_scratch,
WORD32 tbl_sign, const UWORD32 *idx_table) {
WORD idx;
WORD16 index, length;
UWORD8 *ptr_read_next = it_bit_buff->ptr_read_next;
WORD32 bit_pos = it_bit_buff->bit_pos;
WORD32 read_word;
WORD32 increment;
read_word = ixheaacd_aac_showbits_32(ptr_read_next, it_bit_buff->cnt_bits,
&increment);
ptr_read_next += increment;
for (idx = width; idx != 0; idx -= 4) {
WORD32 ampres, ampres1;
WORD32 ampres2, ampres3;
UWORD32 read_word1;
read_word1 = read_word << bit_pos;
ixheaacd_huffman_decode(read_word1, &index, &length, code_book_tbl,
idx_table);
bit_pos += length;
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
if (tbl_sign) {
WORD32 w, x, y, z;
WORD32 ampout0, ampout1, ampout2, ampout3;
WORD32 temp_word;
temp_word = read_word << bit_pos;
w = index / 27;
index = index - w * 27;
x = index / 9;
index = index - x * 9;
y = index / 3;
z = index - y * 3;
ampout0 = w + *ptr_scratch++;
ampout0 = ixheaacd_pow_table_Q13[ampout0];
if (w) {
if (temp_word & 0x80000000) {
ampout0 = -ampout0;
}
temp_word = temp_word << 1;
bit_pos++;
} else {
ampout0 = -ampout0;
}
ampout1 = x + *ptr_scratch++;
ampout1 = ixheaacd_pow_table_Q13[ampout1];
if (x) {
if (temp_word & 0x80000000) {
ampout1 = -ampout1;
}
temp_word = temp_word << 1;
bit_pos++;
} else {
ampout1 = -ampout1;
}
ampout2 = y + *ptr_scratch++;
ampout2 = ixheaacd_pow_table_Q13[ampout2];
if (y) {
if (temp_word & 0x80000000) {
ampout2 = -ampout2;
}
temp_word = temp_word << 1;
bit_pos++;
} else {
ampout2 = -ampout2;
}
ampout3 = z + *ptr_scratch++;
ampout3 = ixheaacd_pow_table_Q13[ampout3];
if (z) {
if (temp_word & 0x80000000) {
ampout3 = -ampout3;
}
temp_word = temp_word << 1;
bit_pos++;
} else {
ampout3 = -ampout3;
}
*x_invquant++ = ampout0;
*x_invquant++ = ampout1;
*x_invquant++ = ampout2;
*x_invquant++ = ampout3;
} else {
WORD32 w, x, y, z;
ampres = *ptr_scratch++;
ampres1 = *ptr_scratch++;
ampres2 = *ptr_scratch++;
ampres3 = *ptr_scratch++;
w = index / 27 - 1;
index = index - (w + 1) * 27;
x = index / 9 - 1;
index = index - (x + 1) * 9;
y = index / 3 - 1;
z = index - ((y + 1) * 3) - 1;
if (w <= 0) {
ampres = ampres - w;
ampres = ixheaacd_pow_table_Q13[ampres];
ampres = -ampres;
} else {
ampres += w;
ampres = ixheaacd_pow_table_Q13[ampres];
}
if (x <= 0) {
ampres1 = ampres1 - x;
ampres1 = ixheaacd_pow_table_Q13[ampres1];
ampres1 = -ampres1;
} else {
ampres1 += x;
ampres1 = ixheaacd_pow_table_Q13[ampres1];
}
if (y <= 0) {
ampres2 = ampres2 - y;
ampres2 = ixheaacd_pow_table_Q13[ampres2];
ampres2 = -ampres2;
} else {
ampres2 += y;
ampres2 = ixheaacd_pow_table_Q13[ampres2];
}
if (z <= 0) {
ampres3 = ampres3 - z;
ampres3 = ixheaacd_pow_table_Q13[ampres3];
ampres3 = -ampres3;
} else {
ampres3 += z;
ampres3 = ixheaacd_pow_table_Q13[ampres3];
}
*x_invquant++ = ampres;
*x_invquant++ = ampres1;
*x_invquant++ = ampres2;
*x_invquant++ = ampres3;
}
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
}
ptr_read_next = ptr_read_next - increment;
ixheaacd_aac_read_byte_corr1(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
it_bit_buff->ptr_read_next = ptr_read_next;
it_bit_buff->bit_pos = bit_pos;
return 0;
}
static PLATFORM_INLINE WORD ixheaacd_huffman_dec_pair(
ia_bit_buf_struct *it_bit_buff, WORD32 *spec_coef, WORD16 *offsets,
WORD no_bands, WORD group_len, const UWORD16 *code_book_tbl,
WORD32 *ixheaacd_pow_table_Q13, WORD32 tbl_sign, const UWORD32 *idx_table,
WORD32 huff_mode)
{
WORD idx, grp_idx;
WORD len_idx;
WORD16 index, length;
WORD32 y, z;
WORD32 *spec_orig = spec_coef;
UWORD8 *ptr_read_next = it_bit_buff->ptr_read_next;
WORD32 bit_pos = it_bit_buff->bit_pos;
WORD32 read_word;
WORD32 increment;
read_word = ixheaacd_aac_showbits_32(ptr_read_next, it_bit_buff->cnt_bits,
&increment);
ptr_read_next += increment;
do {
len_idx = offsets[1] - offsets[0];
grp_idx = group_len;
do {
spec_coef += offsets[0];
idx = len_idx;
do {
UWORD32 read_word1;
read_word1 = read_word << bit_pos;
ixheaacd_huffman_decode(read_word1, &index, &length, code_book_tbl,
idx_table);
bit_pos += length;
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
if (tbl_sign) {
WORD32 temp_word;
temp_word = read_word << bit_pos;
y = index / huff_mode;
z = index - huff_mode * y;
if (y) {
y = ixheaacd_pow_table_Q13[y];
if (temp_word & 0x80000000) y = -y;
temp_word = temp_word << 1;
bit_pos++;
}
*spec_coef++ = y;
if (z) {
z = ixheaacd_pow_table_Q13[z];
if (temp_word & 0x80000000) {
z = -z;
}
temp_word <<= 1;
bit_pos++;
}
*spec_coef++ = z;
} else {
y = (index / huff_mode) - 4;
z = index - ((y + 4) * huff_mode) - 4;
if (y < 0) {
y = -y;
y = ixheaacd_pow_table_Q13[y];
y = -y;
} else
y = ixheaacd_pow_table_Q13[y];
if (z < 0) {
z = -z;
z = ixheaacd_pow_table_Q13[z];
z = -z;
} else
z = ixheaacd_pow_table_Q13[z];
*spec_coef++ = y;
*spec_coef++ = z;
}
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
idx -= 2;
} while (idx != 0);
spec_coef += (MAX_BINS_SHORT - offsets[1]);
grp_idx--;
} while (grp_idx != 0);
offsets++;
spec_coef = spec_orig;
no_bands--;
} while (no_bands >= 0);
ptr_read_next = ptr_read_next - increment;
ixheaacd_aac_read_byte_corr1(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
it_bit_buff->ptr_read_next = ptr_read_next;
it_bit_buff->bit_pos = bit_pos;
return 0;
}
static PLATFORM_INLINE WORD ixheaacd_huffman_dec_word2_pair(
ia_bit_buf_struct *it_bit_buff, WORD32 width, const UWORD16 *code_book_tbl,
WORD32 *x_invquant, WORD32 *ixheaacd_pow_table_Q13, WORD8 *ptr_scratch,
WORD32 tbl_sign, const UWORD32 *idx_table, WORD32 huff_mode)
{
WORD32 ampres;
WORD idx;
WORD16 index, length;
UWORD8 *ptr_read_next = it_bit_buff->ptr_read_next;
WORD32 bit_pos = it_bit_buff->bit_pos;
WORD32 read_word;
WORD32 increment;
read_word = ixheaacd_aac_showbits_32(ptr_read_next, it_bit_buff->cnt_bits,
&increment);
ptr_read_next += increment;
for (idx = width; idx != 0; idx -= 2) {
{
UWORD32 read_word1;
read_word1 = read_word << bit_pos;
ixheaacd_huffman_decode(read_word1, &index, &length, code_book_tbl,
idx_table);
bit_pos += length;
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
}
if (tbl_sign) {
WORD32 out0, out1, temp_word;
WORD32 ampout0, ampout1;
ampout0 = *ptr_scratch++;
ampout1 = *ptr_scratch++;
out0 = index / huff_mode;
out1 = index - huff_mode * out0;
ampout0 += out0;
ampout0 = ixheaacd_pow_table_Q13[ampout0];
ampout1 += out1;
ampout1 = ixheaacd_pow_table_Q13[ampout1];
temp_word = read_word << bit_pos;
if (out0) {
if (temp_word & 0x80000000) {
ampout0 = -(ampout0);
}
bit_pos++;
temp_word = temp_word << 1;
} else {
ampout0 = -(ampout0);
}
if (out1) {
if (temp_word & 0x80000000) {
ampout1 = -(ampout1);
}
bit_pos++;
} else {
ampout1 = -(ampout1);
}
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
*x_invquant++ = ampout0;
*x_invquant++ = ampout1;
} else {
WORD32 y, z;
y = (index / huff_mode) - 4;
z = index - ((y + 4) * huff_mode) - 4;
ampres = *ptr_scratch++;
if (y <= 0) {
ampres = ampres - y;
ampres = ixheaacd_pow_table_Q13[ampres];
*x_invquant++ = -ampres;
} else {
ampres += y;
*x_invquant++ = ixheaacd_pow_table_Q13[ampres];
}
ampres = *ptr_scratch++;
if (z <= 0) {
ampres = ampres - z;
ampres = ixheaacd_pow_table_Q13[ampres];
*x_invquant++ = -ampres;
} else {
ampres += z;
*x_invquant++ = ixheaacd_pow_table_Q13[ampres];
}
}
ixheaacd_aac_read_byte_corr(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
}
ptr_read_next = ptr_read_next - increment;
ixheaacd_aac_read_byte_corr1(&ptr_read_next, &bit_pos, &read_word,
it_bit_buff->ptr_bit_buf_end);
it_bit_buff->ptr_read_next = ptr_read_next;
it_bit_buff->bit_pos = bit_pos;
return 0;
}
WORD ixheaacd_decode_huffman(ia_bit_buf_struct *it_bit_buff, WORD32 cb_no,
WORD32 *spec_coef, WORD16 *sfb_offset, WORD start,
WORD sfb, WORD group_len,
ia_aac_dec_tables_struct *ptr_aac_tables) {
WORD ret_val = 0;
WORD start_bit_pos = it_bit_buff->bit_pos;
UWORD8 *start_read_pos = it_bit_buff->ptr_read_next;
const UWORD16 *cb_table = (UWORD16 *)(ptr_aac_tables->code_book[cb_no]);
WORD32 huff_mode;
const UWORD32 *idx_table = (UWORD32 *)(ptr_aac_tables->index_table[cb_no]);
WORD32 *pow_table =
(WORD32 *)ptr_aac_tables->pstr_block_tables->ixheaacd_pow_table_Q13;
WORD32 no_bands = sfb - start - 1;
WORD16 *band_offset = sfb_offset + start;
if (cb_no == 11) {
const UWORD32 *idx_table =
ptr_aac_tables->pstr_huffmann_tables->idx_table_hf11;
const UWORD16 *cb_table =
ptr_aac_tables->pstr_huffmann_tables->input_table_cb11;
ret_val = ixheaacd_huffman_dec_word1(it_bit_buff, spec_coef, band_offset,
no_bands, group_len, cb_table,
pow_table, idx_table);
} else if (cb_no <= 4) {
WORD32 tbl_sign = 0;
if (cb_no > 2) {
tbl_sign = 1;
}
ret_val = ixheaacd_huffman_dec_quad(it_bit_buff, spec_coef, band_offset,
no_bands, group_len, cb_table,
pow_table, tbl_sign, idx_table);
}
else if (cb_no <= 10) {
WORD32 tbl_sign = 0;
huff_mode = 9;
if (cb_no > 6) {
if (cb_no > 8)
huff_mode = 13;
else
huff_mode = 8;
tbl_sign = 1;
}
ret_val = ixheaacd_huffman_dec_pair(
it_bit_buff, spec_coef, band_offset, no_bands, group_len, cb_table,
pow_table, tbl_sign, idx_table, huff_mode);
}
{
WORD bits_cons;
bits_cons = ((it_bit_buff->ptr_read_next - start_read_pos) << 3) +
(it_bit_buff->bit_pos - start_bit_pos);
it_bit_buff->cnt_bits -= bits_cons;
}
return ret_val;
}
WORD ixheaacd_huffman_dec_word2(ia_bit_buf_struct *it_bit_buff, WORD32 cb_no,
WORD32 width,
ia_aac_dec_tables_struct *ptr_aac_tables,
WORD32 *x_invquant, WORD8 *scratch_ptr) {
WORD ret_val = 0;
WORD32 huff_mode;
WORD start_bit_pos = it_bit_buff->bit_pos;
WORD32 cnt_bits = it_bit_buff->cnt_bits;
WORD32 *pow_table =
(WORD32 *)ptr_aac_tables->pstr_block_tables->ixheaacd_pow_table_Q13;
UWORD8 *start_read_pos = it_bit_buff->ptr_read_next;
const UWORD16 *cb_table = (UWORD16 *)(ptr_aac_tables->code_book[cb_no]);
const UWORD32 *idx_table = (UWORD32 *)(ptr_aac_tables->index_table[cb_no]);
if (cb_no == 11) {
const UWORD16 *cb_table =
ptr_aac_tables->pstr_huffmann_tables->input_table_cb11;
ret_val = ixheaacd_huffman_dec_word2_11(
it_bit_buff, width, cb_table, x_invquant, pow_table, scratch_ptr,
ptr_aac_tables->pstr_huffmann_tables->idx_table_hf11);
} else if (cb_no <= 4) {
WORD32 tbl_sign = 0;
if (cb_no > 2) tbl_sign = 1;
ret_val = ixheaacd_huffman_dec_word2_quad(it_bit_buff, width, cb_table,
x_invquant, pow_table,
scratch_ptr, tbl_sign, idx_table);
} else if (cb_no <= 10) {
WORD32 tbl_sign = 0;
huff_mode = 9;
if (cb_no > 6) {
if (cb_no > 8) {
huff_mode = 13;
} else {
huff_mode = 8;
}
tbl_sign = 1;
}
ret_val = ixheaacd_huffman_dec_word2_pair(
it_bit_buff, width, cb_table, x_invquant, pow_table, scratch_ptr,
tbl_sign, idx_table, huff_mode);
}
{
WORD bits_cons;
if (it_bit_buff->bit_pos <= 7) {
bits_cons = ((it_bit_buff->ptr_read_next - start_read_pos) << 3) +
(it_bit_buff->bit_pos - start_bit_pos);
it_bit_buff->cnt_bits = cnt_bits - bits_cons;
} else {
it_bit_buff->ptr_read_next += (it_bit_buff->bit_pos) >> 3;
it_bit_buff->bit_pos = it_bit_buff->bit_pos & 0x7;
bits_cons = ((it_bit_buff->ptr_read_next - start_read_pos) << 3) +
((it_bit_buff->bit_pos - start_bit_pos));
it_bit_buff->cnt_bits = cnt_bits - bits_cons;
}
}
return ret_val;
}
void ixheaacd_lap1_512_480(WORD32 *coef, WORD32 *prev, WORD16 *out,
const WORD16 *window, WORD16 q_shift, WORD16 size,
WORD16 stride) {
WORD32 accu;
WORD32 i;
WORD16 rounding_fac = -0x2000;
WORD32 *window_i = (WORD32 *)window;
WORD16 *ptr_out1, *ptr_out2;
WORD32 *pwin1, *pwin2;
WORD32 *pCoef = &coef[size * 2 - 1 - 0];
pwin1 = &window_i[size - 1 - 0];
pwin2 = &window_i[size + 0];
ptr_out1 = &out[stride * (size - 1 - 0)];
ptr_out2 = &out[stride * (size + 0)];
for (i = 0; i < size; i++) {
WORD32 win1, win2, coeff;
WORD32 prev_data = *prev++;
win1 = *pwin1--;
coeff = *pCoef--;
win2 = *pwin2++;
accu = ixheaacd_sub32_sat(
ixheaacd_shl32_dir_sat_limit(ixheaacd_mult32_shl(coeff, win1), q_shift),
ixheaacd_mac32x16in32_shl(rounding_fac, win2, (WORD16)(prev_data)));
accu = ixheaacd_add32_sat(accu, accu);
accu = ixheaacd_add32_sat(accu, accu);
*ptr_out1 = ixheaacd_shr32(accu, 16);
ptr_out1 -= stride;
accu = ixheaacd_sub32_sat(
ixheaacd_shl32_dir_sat_limit(
ixheaacd_mult32_shl(ixheaacd_negate32(coeff), win2), q_shift),
ixheaacd_mac32x16in32_shl(rounding_fac, win1, (WORD16)(prev_data)));
accu = ixheaacd_add32_sat(accu, accu);
accu = ixheaacd_add32_sat(accu, accu);
*ptr_out2 = ixheaacd_shr32(accu, 16);
ptr_out2 += stride;
}
}
VOID ixheaacd_over_lap_add1_dec(WORD32 *coef, WORD32 *prev, WORD16 *out,
const WORD16 *window, WORD16 q_shift,
WORD16 size, WORD16 ch_fac) {
WORD32 accu;
WORD32 i;
WORD16 rounding_fac = -0x2000;
for (i = 0; i < size; i++) {
WORD16 window1, window2;
window1 = window[2 * size - 2 * i - 1];
window2 = window[2 * size - 2 * i - 2];
accu = ixheaacd_sub32_sat(
ixheaacd_shl32_dir_sat_limit(
ixheaacd_mult32x16in32(coef[size * 2 - 1 - i], window2), q_shift),
ixheaacd_mac32x16in32_drc(rounding_fac, prev[i], window1));
out[ch_fac * (size - i - 1)] =
ixheaacd_shr32(ixheaacd_shl32_dir_sat_limit(accu, 2), 16);
accu = ixheaacd_sub32_sat(
ixheaacd_shl32_dir_sat_limit(
ixheaacd_mult32x16in32(ixheaacd_negate32(coef[size * 2 - 1 - i]),
window1),
q_shift),
ixheaacd_mac32x16in32_drc(rounding_fac, prev[i], window2));
out[ch_fac * (size + i)] =
ixheaacd_shr32(ixheaacd_shl32_dir_sat_limit(accu, 2), 16);
}
}
VOID ixheaacd_over_lap_add2_dec(WORD32 *coef, WORD32 *prev, WORD32 *out,
const WORD16 *window, WORD16 q_shift,
WORD16 size, WORD16 ch_fac) {
WORD32 accu;
WORD32 i;
for (i = 0; i < size; i++) {
accu = ixheaacd_sub32_sat(
ixheaacd_mult32x16in32(coef[size + i], window[2 * i]),
ixheaacd_mult32x16in32(prev[size - 1 - i], window[2 * i + 1]));
out[ch_fac * i] = ixheaacd_shr32_drc(accu, 16 - (q_shift + 1));
}
for (i = 0; i < size; i++) {
accu = ixheaacd_sub32_sat(
ixheaacd_mult32x16in32(ixheaacd_negate32_sat(coef[size * 2 - 1 - i]),
window[2 * size - 2 * i - 1]),
ixheaacd_mult32x16in32(prev[i], window[2 * size - 2 * i - 2]));
out[ch_fac * (i + size)] = ixheaacd_shr32_drc(accu, 16 - (q_shift + 1));
}
}
VOID ixheaacd_process_single_scf(WORD32 scale_factor, WORD32 *x_invquant,
WORD32 width, WORD32 *ptr_scale_table,
WORD32 total_channels, WORD32 object_type,
WORD32 aac_sf_data_resil_flag) {
WORD32 j;
WORD32 temp1;
WORD32 q_factor;
WORD32 buffer1;
WORD16 scale_short;
object_type = 0;
aac_sf_data_resil_flag = 0;
if (scale_factor < 24) {
for (j = width; j > 0; j--) {
*x_invquant++ = 0;
}
} else {
WORD32 shift;
if (total_channels > 2)
q_factor = 34 - (scale_factor >> 2);
else
q_factor = 37 - (scale_factor >> 2);
scale_short = ptr_scale_table[(scale_factor & 0x0003)];
shift = q_factor;
if (shift > 0) {
if (scale_short == (WORD16)0x8000) {
for (j = width; j > 0; j--) {
temp1 = *x_invquant;
buffer1 = ixheaacd_mult32x16in32_shl_sat(temp1, scale_short);
buffer1 = ixheaacd_shr32(buffer1, shift);
*x_invquant++ = buffer1;
}
} else {
for (j = width; j > 0; j--) {
temp1 = *x_invquant;
buffer1 = ixheaacd_mult32x16in32_shl(temp1, scale_short);
buffer1 = ixheaacd_shr32(buffer1, shift);
*x_invquant++ = buffer1;
}
}
} else {
shift = -shift;
if (shift > 0) {
if (scale_short == (WORD16)0x8000) {
for (j = width; j > 0; j--) {
temp1 = *x_invquant;
temp1 = ixheaacd_shl32(temp1, shift - 1);
buffer1 = ixheaacd_mult32x16in32_shl_sat(temp1, scale_short);
buffer1 = ixheaacd_shl32(buffer1, 1);
*x_invquant++ = buffer1;
}
} else {
for (j = width; j > 0; j--) {
temp1 = *x_invquant;
temp1 = ixheaacd_shl32(temp1, shift - 1);
buffer1 = ixheaacd_mult32x16in32_shl(temp1, scale_short);
buffer1 = ixheaacd_shl32(buffer1, 1);
*x_invquant++ = buffer1;
}
}
} else {
if (scale_short == (WORD16)0x8000) {
for (j = width; j > 0; j--) {
temp1 = *x_invquant;
buffer1 = ixheaacd_mult32x16in32_shl_sat(temp1, scale_short);
*x_invquant++ = buffer1;
}
} else {
for (j = width; j > 0; j--) {
temp1 = *x_invquant;
buffer1 = ixheaacd_mult32x16in32_shl(temp1, scale_short);
*x_invquant++ = buffer1;
}
}
}
}
}
}
VOID ixheaacd_scale_factor_process_dec(WORD32 *x_invquant, WORD16 *scale_fact,
WORD no_band, WORD8 *width,
WORD32 *ptr_scale_table,
WORD32 total_channels,
WORD32 object_type,
WORD32 aac_sf_data_resil_flag) {
WORD32 i;
WORD16 scale_factor;
for (i = no_band - 1; i >= 0; i--) {
scale_factor = *scale_fact++;
ixheaacd_process_single_scf(scale_factor, x_invquant, *width,
ptr_scale_table, total_channels, object_type,
aac_sf_data_resil_flag);
x_invquant += *width;
width++;
}
}
void ixheaacd_right_shift_block(WORD32 *p_spectrum, WORD32 length,
WORD32 shift_val) {
WORD32 i;
WORD32 temp1, temp2;
WORD32 *temp_ptr = &p_spectrum[0];
length = length >> 2;
for (i = length - 1; i >= 0; i--) {
temp1 = *temp_ptr;
temp2 = *(temp_ptr + 1);
*temp_ptr++ = temp1 >> shift_val;
temp1 = *(temp_ptr + 1);
*temp_ptr++ = temp2 >> shift_val;
temp2 = *(temp_ptr + 1);
*temp_ptr++ = temp1 >> shift_val;
*temp_ptr++ = temp2 >> shift_val;
}
}