LCOV - code coverage report
Current view: top level - libavcodec - aacps.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 528 628 84.1 %
Date: 2017-12-18 20:14:19 Functions: 25 28 89.3 %

          Line data    Source code
       1             : /*
       2             :  * MPEG-4 Parametric Stereo decoding functions
       3             :  * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       7             :  * FFmpeg is free software; you can redistribute it and/or
       8             :  * modify it under the terms of the GNU Lesser General Public
       9             :  * License as published by the Free Software Foundation; either
      10             :  * version 2.1 of the License, or (at your option) any later version.
      11             :  *
      12             :  * FFmpeg is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15             :  * Lesser General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU Lesser General Public
      18             :  * License along with FFmpeg; if not, write to the Free Software
      19             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      20             :  *
      21             :  * Note: Rounding-to-nearest used unless otherwise stated
      22             :  *
      23             :  */
      24             : 
      25             : #include <stdint.h>
      26             : #include "libavutil/common.h"
      27             : #include "libavutil/mathematics.h"
      28             : #include "avcodec.h"
      29             : #include "get_bits.h"
      30             : #include "aacps.h"
      31             : #if USE_FIXED
      32             : #include "aacps_fixed_tablegen.h"
      33             : #else
      34             : #include "libavutil/internal.h"
      35             : #include "aacps_tablegen.h"
      36             : #endif /* USE_FIXED */
      37             : #include "aacpsdata.c"
      38             : 
      39             : #define PS_BASELINE 0  ///< Operate in Baseline PS mode
      40             :                        ///< Baseline implies 10 or 20 stereo bands,
      41             :                        ///< mixing mode A, and no ipd/opd
      42             : 
      43             : #define numQMFSlots 32 //numTimeSlots * RATE
      44             : 
      45             : static const int8_t num_env_tab[2][4] = {
      46             :     { 0, 1, 2, 4, },
      47             :     { 1, 2, 3, 4, },
      48             : };
      49             : 
      50             : static const int8_t nr_iidicc_par_tab[] = {
      51             :     10, 20, 34, 10, 20, 34,
      52             : };
      53             : 
      54             : static const int8_t nr_iidopd_par_tab[] = {
      55             :      5, 11, 17,  5, 11, 17,
      56             : };
      57             : 
      58             : enum {
      59             :     huff_iid_df1,
      60             :     huff_iid_dt1,
      61             :     huff_iid_df0,
      62             :     huff_iid_dt0,
      63             :     huff_icc_df,
      64             :     huff_icc_dt,
      65             :     huff_ipd_df,
      66             :     huff_ipd_dt,
      67             :     huff_opd_df,
      68             :     huff_opd_dt,
      69             : };
      70             : 
      71             : static const int huff_iid[] = {
      72             :     huff_iid_df0,
      73             :     huff_iid_df1,
      74             :     huff_iid_dt0,
      75             :     huff_iid_dt1,
      76             : };
      77             : 
      78             : static VLC vlc_ps[10];
      79             : 
      80             : #define READ_PAR_DATA(PAR, OFFSET, MASK, ERR_CONDITION) \
      81             : /** \
      82             :  * Read Inter-channel Intensity Difference/Inter-Channel Coherence/ \
      83             :  * Inter-channel Phase Difference/Overall Phase Difference parameters from the \
      84             :  * bitstream. \
      85             :  * \
      86             :  * @param avctx contains the current codec context \
      87             :  * @param gb    pointer to the input bitstream \
      88             :  * @param ps    pointer to the Parametric Stereo context \
      89             :  * @param PAR   pointer to the parameter to be read \
      90             :  * @param e     envelope to decode \
      91             :  * @param dt    1: time delta-coded, 0: frequency delta-coded \
      92             :  */ \
      93             : static int read_ ## PAR ## _data(AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, \
      94             :                         int8_t (*PAR)[PS_MAX_NR_IIDICC], int table_idx, int e, int dt) \
      95             : { \
      96             :     int b, num = ps->nr_ ## PAR ## _par; \
      97             :     VLC_TYPE (*vlc_table)[2] = vlc_ps[table_idx].table; \
      98             :     if (dt) { \
      99             :         int e_prev = e ? e - 1 : ps->num_env_old - 1; \
     100             :         e_prev = FFMAX(e_prev, 0); \
     101             :         for (b = 0; b < num; b++) { \
     102             :             int val = PAR[e_prev][b] + get_vlc2(gb, vlc_table, 9, 3) - OFFSET; \
     103             :             if (MASK) val &= MASK; \
     104             :             PAR[e][b] = val; \
     105             :             if (ERR_CONDITION) \
     106             :                 goto err; \
     107             :         } \
     108             :     } else { \
     109             :         int val = 0; \
     110             :         for (b = 0; b < num; b++) { \
     111             :             val += get_vlc2(gb, vlc_table, 9, 3) - OFFSET; \
     112             :             if (MASK) val &= MASK; \
     113             :             PAR[e][b] = val; \
     114             :             if (ERR_CONDITION) \
     115             :                 goto err; \
     116             :         } \
     117             :     } \
     118             :     return 0; \
     119             : err: \
     120             :     av_log(avctx, AV_LOG_ERROR, "illegal "#PAR"\n"); \
     121             :     return -1; \
     122             : }
     123             : 
     124        1805 : READ_PAR_DATA(iid,    huff_offset[table_idx],    0, FFABS(ps->iid_par[e][b]) > 7 + 8 * ps->iid_quant)
     125        1806 : READ_PAR_DATA(icc,    huff_offset[table_idx],    0, ps->icc_par[e][b] > 7U)
     126         206 : READ_PAR_DATA(ipdopd,                      0, 0x07, 0)
     127             : 
     128          53 : static int ps_read_extension_data(GetBitContext *gb, PSContext *ps, int ps_extension_id)
     129             : {
     130             :     int e;
     131          53 :     int count = get_bits_count(gb);
     132             : 
     133          53 :     if (ps_extension_id)
     134           0 :         return 0;
     135             : 
     136          53 :     ps->enable_ipdopd = get_bits1(gb);
     137          53 :     if (ps->enable_ipdopd) {
     138         156 :         for (e = 0; e < ps->num_env; e++) {
     139         103 :             int dt = get_bits1(gb);
     140         103 :             read_ipdopd_data(NULL, gb, ps, ps->ipd_par, dt ? huff_ipd_dt : huff_ipd_df, e, dt);
     141         103 :             dt = get_bits1(gb);
     142         103 :             read_ipdopd_data(NULL, gb, ps, ps->opd_par, dt ? huff_opd_dt : huff_opd_df, e, dt);
     143             :         }
     144             :     }
     145          53 :     skip_bits1(gb);      //reserved_ps
     146          53 :     return get_bits_count(gb) - count;
     147             : }
     148             : 
     149           3 : static void ipdopd_reset(int8_t *ipd_hist, int8_t *opd_hist)
     150             : {
     151             :     int i;
     152          54 :     for (i = 0; i < PS_MAX_NR_IPDOPD; i++) {
     153          51 :         opd_hist[i] = 0;
     154          51 :         ipd_hist[i] = 0;
     155             :     }
     156           3 : }
     157             : 
     158        1616 : int AAC_RENAME(ff_ps_read_data)(AVCodecContext *avctx, GetBitContext *gb_host, PSContext *ps, int bits_left)
     159             : {
     160             :     int e;
     161        1616 :     int bit_count_start = get_bits_count(gb_host);
     162             :     int header;
     163             :     int bits_consumed;
     164        1616 :     GetBitContext gbc = *gb_host, *gb = &gbc;
     165             : 
     166        1616 :     header = get_bits1(gb);
     167        1616 :     if (header) {     //enable_ps_header
     168         307 :         ps->enable_iid = get_bits1(gb);
     169         307 :         if (ps->enable_iid) {
     170         175 :             int iid_mode = get_bits(gb, 3);
     171         175 :             if (iid_mode > 5) {
     172           0 :                 av_log(avctx, AV_LOG_ERROR, "iid_mode %d is reserved.\n",
     173             :                        iid_mode);
     174           0 :                 goto err;
     175             :             }
     176         175 :             ps->nr_iid_par    = nr_iidicc_par_tab[iid_mode];
     177         175 :             ps->iid_quant     = iid_mode > 2;
     178         175 :             ps->nr_ipdopd_par = nr_iidopd_par_tab[iid_mode];
     179             :         }
     180         307 :         ps->enable_icc = get_bits1(gb);
     181         307 :         if (ps->enable_icc) {
     182         262 :             ps->icc_mode = get_bits(gb, 3);
     183         262 :             if (ps->icc_mode > 5) {
     184           0 :                 av_log(avctx, AV_LOG_ERROR, "icc_mode %d is reserved.\n",
     185             :                        ps->icc_mode);
     186           0 :                 goto err;
     187             :             }
     188         262 :             ps->nr_icc_par = nr_iidicc_par_tab[ps->icc_mode];
     189             :         }
     190         307 :         ps->enable_ext = get_bits1(gb);
     191             :     }
     192             : 
     193        1616 :     ps->frame_class = get_bits1(gb);
     194        1616 :     ps->num_env_old = ps->num_env;
     195        1616 :     ps->num_env     = num_env_tab[ps->frame_class][get_bits(gb, 2)];
     196             : 
     197        1616 :     ps->border_position[0] = -1;
     198        1616 :     if (ps->frame_class) {
     199         940 :         for (e = 1; e <= ps->num_env; e++) {
     200         671 :             ps->border_position[e] = get_bits(gb, 5);
     201         671 :             if (ps->border_position[e] < ps->border_position[e-1]) {
     202           0 :                 av_log(avctx, AV_LOG_ERROR, "border_position non monotone.\n");
     203           0 :                 goto err;
     204             :             }
     205             :         }
     206             :     } else
     207        2628 :         for (e = 1; e <= ps->num_env; e++)
     208        1281 :             ps->border_position[e] = (e * numQMFSlots >> ff_log2_tab[ps->num_env]) - 1;
     209             : 
     210        1616 :     if (ps->enable_iid) {
     211        3241 :         for (e = 0; e < ps->num_env; e++) {
     212        1805 :             int dt = get_bits1(gb);
     213        1805 :             if (read_iid_data(avctx, gb, ps, ps->iid_par, huff_iid[2*dt+ps->iid_quant], e, dt))
     214           0 :                 goto err;
     215             :         }
     216             :     } else
     217         180 :         memset(ps->iid_par, 0, sizeof(ps->iid_par));
     218             : 
     219        1616 :     if (ps->enable_icc)
     220        3300 :         for (e = 0; e < ps->num_env; e++) {
     221        1806 :             int dt = get_bits1(gb);
     222        1806 :             if (read_icc_data(avctx, gb, ps, ps->icc_par, dt ? huff_icc_dt : huff_icc_df, e, dt))
     223           0 :                 goto err;
     224             :         }
     225             :     else
     226         122 :         memset(ps->icc_par, 0, sizeof(ps->icc_par));
     227             : 
     228        1616 :     if (ps->enable_ext) {
     229          53 :         int cnt = get_bits(gb, 4);
     230          53 :         if (cnt == 15) {
     231           0 :             cnt += get_bits(gb, 8);
     232             :         }
     233          53 :         cnt *= 8;
     234         159 :         while (cnt > 7) {
     235          53 :             int ps_extension_id = get_bits(gb, 2);
     236          53 :             cnt -= 2 + ps_read_extension_data(gb, ps, ps_extension_id);
     237             :         }
     238          53 :         if (cnt < 0) {
     239           0 :             av_log(avctx, AV_LOG_ERROR, "ps extension overflow %d\n", cnt);
     240           0 :             goto err;
     241             :         }
     242          53 :         skip_bits(gb, cnt);
     243             :     }
     244             : 
     245        1616 :     ps->enable_ipdopd &= !PS_BASELINE;
     246             : 
     247             :     //Fix up envelopes
     248        1616 :     if (!ps->num_env || ps->border_position[ps->num_env] < numQMFSlots - 1) {
     249             :         //Create a fake envelope
     250          81 :         int source = ps->num_env ? ps->num_env - 1 : ps->num_env_old - 1;
     251             :         int b;
     252          81 :         if (source >= 0 && source != ps->num_env) {
     253          29 :             if (ps->enable_iid) {
     254          21 :                 memcpy(ps->iid_par+ps->num_env, ps->iid_par+source, sizeof(ps->iid_par[0]));
     255             :             }
     256          29 :             if (ps->enable_icc) {
     257          21 :                 memcpy(ps->icc_par+ps->num_env, ps->icc_par+source, sizeof(ps->icc_par[0]));
     258             :             }
     259          29 :             if (ps->enable_ipdopd) {
     260           0 :                 memcpy(ps->ipd_par+ps->num_env, ps->ipd_par+source, sizeof(ps->ipd_par[0]));
     261           0 :                 memcpy(ps->opd_par+ps->num_env, ps->opd_par+source, sizeof(ps->opd_par[0]));
     262             :             }
     263             :         }
     264          81 :         if (ps->enable_iid){
     265         756 :             for (b = 0; b < ps->nr_iid_par; b++) {
     266         720 :                 if (FFABS(ps->iid_par[ps->num_env][b]) > 7 + 8 * ps->iid_quant) {
     267           0 :                     av_log(avctx, AV_LOG_ERROR, "iid_par invalid\n");
     268           0 :                     goto err;
     269             :                 }
     270             :             }
     271             :         }
     272          81 :         if (ps->enable_icc){
     273         882 :             for (b = 0; b < ps->nr_iid_par; b++) {
     274         840 :                 if (ps->icc_par[ps->num_env][b] > 7U) {
     275           0 :                     av_log(avctx, AV_LOG_ERROR, "icc_par invalid\n");
     276           0 :                     goto err;
     277             :                 }
     278             :             }
     279             :         }
     280          81 :         ps->num_env++;
     281          81 :         ps->border_position[ps->num_env] = numQMFSlots - 1;
     282             :     }
     283             : 
     284             : 
     285        1616 :     ps->is34bands_old = ps->is34bands;
     286        1616 :     if (!PS_BASELINE && (ps->enable_iid || ps->enable_icc))
     287        3144 :         ps->is34bands = (ps->enable_iid && ps->nr_iid_par == 34) ||
     288        2943 :                         (ps->enable_icc && ps->nr_icc_par == 34);
     289             : 
     290             :     //Baseline
     291        1616 :     if (!ps->enable_ipdopd) {
     292        1563 :         memset(ps->ipd_par, 0, sizeof(ps->ipd_par));
     293        1563 :         memset(ps->opd_par, 0, sizeof(ps->opd_par));
     294             :     }
     295             : 
     296        1616 :     if (header)
     297         307 :         ps->start = 1;
     298             : 
     299        1616 :     bits_consumed = get_bits_count(gb) - bit_count_start;
     300        1616 :     if (bits_consumed <= bits_left) {
     301        1616 :         skip_bits_long(gb_host, bits_consumed);
     302        1616 :         return bits_consumed;
     303             :     }
     304           0 :     av_log(avctx, AV_LOG_ERROR, "Expected to read %d PS bits actually read %d.\n", bits_left, bits_consumed);
     305           0 : err:
     306           0 :     ps->start = 0;
     307           0 :     skip_bits_long(gb_host, bits_left);
     308           0 :     memset(ps->iid_par, 0, sizeof(ps->iid_par));
     309           0 :     memset(ps->icc_par, 0, sizeof(ps->icc_par));
     310           0 :     memset(ps->ipd_par, 0, sizeof(ps->ipd_par));
     311           0 :     memset(ps->opd_par, 0, sizeof(ps->opd_par));
     312           0 :     return bits_left;
     313             : }
     314             : 
     315             : /** Split one subband into 2 subsubbands with a symmetric real filter.
     316             :  * The filter must have its non-center even coefficients equal to zero. */
     317        3028 : static void hybrid2_re(INTFLOAT (*in)[2], INTFLOAT (*out)[32][2], const INTFLOAT filter[8], int len, int reverse)
     318             : {
     319             :     int i, j;
     320       99924 :     for (i = 0; i < len; i++, in++) {
     321       96896 :         INT64FLOAT re_in = AAC_MUL31(filter[6], in[6][0]); //real inphase
     322       96896 :         INT64FLOAT re_op = 0.0f;                          //real out of phase
     323       96896 :         INT64FLOAT im_in = AAC_MUL31(filter[6], in[6][1]); //imag inphase
     324       96896 :         INT64FLOAT im_op = 0.0f;                          //imag out of phase
     325      387584 :         for (j = 0; j < 6; j += 2) {
     326      290688 :             re_op += (INT64FLOAT)filter[j+1] * (in[j+1][0] + in[12-j-1][0]);
     327      290688 :             im_op += (INT64FLOAT)filter[j+1] * (in[j+1][1] + in[12-j-1][1]);
     328             :         }
     329             : 
     330             : #if USE_FIXED
     331           0 :         re_op = (re_op + 0x40000000) >> 31;
     332           0 :         im_op = (im_op + 0x40000000) >> 31;
     333             : #endif /* USE_FIXED */
     334             : 
     335       96896 :         out[ reverse][i][0] = (INTFLOAT)(re_in + re_op);
     336       96896 :         out[ reverse][i][1] = (INTFLOAT)(im_in + im_op);
     337       96896 :         out[!reverse][i][0] = (INTFLOAT)(re_in - re_op);
     338       96896 :         out[!reverse][i][1] = (INTFLOAT)(im_in - im_op);
     339             :     }
     340        3028 : }
     341             : 
     342             : /** Split one subband into 6 subsubbands with a complex filter */
     343        1514 : static void hybrid6_cx(PSDSPContext *dsp, INTFLOAT (*in)[2], INTFLOAT (*out)[32][2],
     344             :                        TABLE_CONST INTFLOAT (*filter)[8][2], int len)
     345             : {
     346             :     int i;
     347        1514 :     int N = 8;
     348        1514 :     LOCAL_ALIGNED_16(INTFLOAT, temp, [8], [2]);
     349             : 
     350       49962 :     for (i = 0; i < len; i++, in++) {
     351       48448 :         dsp->hybrid_analysis(temp, in, (const INTFLOAT (*)[8][2]) filter, 1, N);
     352       48448 :         out[0][i][0] = temp[6][0];
     353       48448 :         out[0][i][1] = temp[6][1];
     354       48448 :         out[1][i][0] = temp[7][0];
     355       48448 :         out[1][i][1] = temp[7][1];
     356       48448 :         out[2][i][0] = temp[0][0];
     357       48448 :         out[2][i][1] = temp[0][1];
     358       48448 :         out[3][i][0] = temp[1][0];
     359       48448 :         out[3][i][1] = temp[1][1];
     360       48448 :         out[4][i][0] = temp[2][0] + temp[5][0];
     361       48448 :         out[4][i][1] = temp[2][1] + temp[5][1];
     362       48448 :         out[5][i][0] = temp[3][0] + temp[4][0];
     363       48448 :         out[5][i][1] = temp[3][1] + temp[4][1];
     364             :     }
     365        1514 : }
     366             : 
     367         510 : static void hybrid4_8_12_cx(PSDSPContext *dsp,
     368             :                             INTFLOAT (*in)[2], INTFLOAT (*out)[32][2],
     369             :                             TABLE_CONST INTFLOAT (*filter)[8][2], int N, int len)
     370             : {
     371             :     int i;
     372             : 
     373       16830 :     for (i = 0; i < len; i++, in++) {
     374       16320 :         dsp->hybrid_analysis(out[0] + i, in, (const INTFLOAT (*)[8][2]) filter, 32, N);
     375             :     }
     376         510 : }
     377             : 
     378        1616 : static void hybrid_analysis(PSDSPContext *dsp, INTFLOAT out[91][32][2],
     379             :                             INTFLOAT in[5][44][2], INTFLOAT L[2][38][64],
     380             :                             int is34, int len)
     381             : {
     382             :     int i, j;
     383        9696 :     for (i = 0; i < 5; i++) {
     384      315120 :         for (j = 0; j < 38; j++) {
     385      307040 :             in[i][j+6][0] = L[0][j][i];
     386      307040 :             in[i][j+6][1] = L[1][j][i];
     387             :         }
     388             :     }
     389        1616 :     if (is34) {
     390         102 :         hybrid4_8_12_cx(dsp, in[0], out,    f34_0_12, 12, len);
     391         102 :         hybrid4_8_12_cx(dsp, in[1], out+12, f34_1_8,   8, len);
     392         102 :         hybrid4_8_12_cx(dsp, in[2], out+20, f34_2_4,   4, len);
     393         102 :         hybrid4_8_12_cx(dsp, in[3], out+24, f34_2_4,   4, len);
     394         102 :         hybrid4_8_12_cx(dsp, in[4], out+28, f34_2_4,   4, len);
     395         102 :         dsp->hybrid_analysis_ileave(out + 27, L, 5, len);
     396             :     } else {
     397        1514 :         hybrid6_cx(dsp, in[0], out, f20_0_8, len);
     398        1514 :         hybrid2_re(in[1], out+6, g1_Q2, len, 1);
     399        1514 :         hybrid2_re(in[2], out+8, g1_Q2, len, 0);
     400        1514 :         dsp->hybrid_analysis_ileave(out + 7, L, 3, len);
     401             :     }
     402             :     //update in_buf
     403        9696 :     for (i = 0; i < 5; i++) {
     404        8080 :         memcpy(in[i], in[i]+32, 6 * sizeof(in[i][0]));
     405             :     }
     406        1616 : }
     407             : 
     408        3232 : static void hybrid_synthesis(PSDSPContext *dsp, INTFLOAT out[2][38][64],
     409             :                              INTFLOAT in[91][32][2], int is34, int len)
     410             : {
     411             :     int i, n;
     412        3232 :     if (is34) {
     413        6732 :         for (n = 0; n < len; n++) {
     414        6528 :             memset(out[0][n], 0, 5*sizeof(out[0][n][0]));
     415        6528 :             memset(out[1][n], 0, 5*sizeof(out[1][n][0]));
     416       84864 :             for (i = 0; i < 12; i++) {
     417       78336 :                 out[0][n][0] += in[   i][n][0];
     418       78336 :                 out[1][n][0] += in[   i][n][1];
     419             :             }
     420       58752 :             for (i = 0; i < 8; i++) {
     421       52224 :                 out[0][n][1] += in[12+i][n][0];
     422       52224 :                 out[1][n][1] += in[12+i][n][1];
     423             :             }
     424       32640 :             for (i = 0; i < 4; i++) {
     425       26112 :                 out[0][n][2] += in[20+i][n][0];
     426       26112 :                 out[1][n][2] += in[20+i][n][1];
     427       26112 :                 out[0][n][3] += in[24+i][n][0];
     428       26112 :                 out[1][n][3] += in[24+i][n][1];
     429       26112 :                 out[0][n][4] += in[28+i][n][0];
     430       26112 :                 out[1][n][4] += in[28+i][n][1];
     431             :             }
     432             :         }
     433         204 :         dsp->hybrid_synthesis_deint(out, in + 27, 5, len);
     434             :     } else {
     435       99924 :         for (n = 0; n < len; n++) {
     436      290688 :             out[0][n][0] = in[0][n][0] + in[1][n][0] + in[2][n][0] +
     437      193792 :                            in[3][n][0] + in[4][n][0] + in[5][n][0];
     438      387584 :             out[1][n][0] = in[0][n][1] + in[1][n][1] + in[2][n][1] +
     439      290688 :                            in[3][n][1] + in[4][n][1] + in[5][n][1];
     440       96896 :             out[0][n][1] = in[6][n][0] + in[7][n][0];
     441       96896 :             out[1][n][1] = in[6][n][1] + in[7][n][1];
     442       96896 :             out[0][n][2] = in[8][n][0] + in[9][n][0];
     443       96896 :             out[1][n][2] = in[8][n][1] + in[9][n][1];
     444             :         }
     445        3028 :         dsp->hybrid_synthesis_deint(out, in + 7, 3, len);
     446             :     }
     447        3232 : }
     448             : 
     449             : /// All-pass filter decay slope
     450             : #define DECAY_SLOPE      Q30(0.05f)
     451             : /// Number of frequency bands that can be addressed by the parameter index, b(k)
     452             : static const int   NR_PAR_BANDS[]      = { 20, 34 };
     453             : static const int   NR_IPDOPD_BANDS[]   = { 11, 17 };
     454             : /// Number of frequency bands that can be addressed by the sub subband index, k
     455             : static const int   NR_BANDS[]          = { 71, 91 };
     456             : /// Start frequency band for the all-pass filter decay slope
     457             : static const int   DECAY_CUTOFF[]      = { 10, 32 };
     458             : /// Number of all-pass filer bands
     459             : static const int   NR_ALLPASS_BANDS[]  = { 30, 50 };
     460             : /// First stereo band using the short one sample delay
     461             : static const int   SHORT_DELAY_BAND[]  = { 42, 62 };
     462             : 
     463             : /** Table 8.46 */
     464           1 : static void map_idx_10_to_20(int8_t *par_mapped, const int8_t *par, int full)
     465             : {
     466             :     int b;
     467           1 :     if (full)
     468           1 :         b = 9;
     469             :     else {
     470           0 :         b = 4;
     471           0 :         par_mapped[10] = 0;
     472             :     }
     473          11 :     for (; b >= 0; b--) {
     474          10 :         par_mapped[2*b+1] = par_mapped[2*b] = par[b];
     475             :     }
     476           1 : }
     477             : 
     478           1 : static void map_idx_34_to_20(int8_t *par_mapped, const int8_t *par, int full)
     479             : {
     480           1 :     par_mapped[ 0] = (2*par[ 0] +   par[ 1]) / 3;
     481           1 :     par_mapped[ 1] = (  par[ 1] + 2*par[ 2]) / 3;
     482           1 :     par_mapped[ 2] = (2*par[ 3] +   par[ 4]) / 3;
     483           1 :     par_mapped[ 3] = (  par[ 4] + 2*par[ 5]) / 3;
     484           1 :     par_mapped[ 4] = (  par[ 6] +   par[ 7]) / 2;
     485           1 :     par_mapped[ 5] = (  par[ 8] +   par[ 9]) / 2;
     486           1 :     par_mapped[ 6] =    par[10];
     487           1 :     par_mapped[ 7] =    par[11];
     488           1 :     par_mapped[ 8] = (  par[12] +   par[13]) / 2;
     489           1 :     par_mapped[ 9] = (  par[14] +   par[15]) / 2;
     490           1 :     par_mapped[10] =    par[16];
     491           1 :     if (full) {
     492           1 :         par_mapped[11] =    par[17];
     493           1 :         par_mapped[12] =    par[18];
     494           1 :         par_mapped[13] =    par[19];
     495           1 :         par_mapped[14] = (  par[20] +   par[21]) / 2;
     496           1 :         par_mapped[15] = (  par[22] +   par[23]) / 2;
     497           1 :         par_mapped[16] = (  par[24] +   par[25]) / 2;
     498           1 :         par_mapped[17] = (  par[26] +   par[27]) / 2;
     499           1 :         par_mapped[18] = (  par[28] +   par[29] +   par[30] +   par[31]) / 4;
     500           1 :         par_mapped[19] = (  par[32] +   par[33]) / 2;
     501             :     }
     502           1 : }
     503             : 
     504           8 : static void map_val_34_to_20(INTFLOAT par[PS_MAX_NR_IIDICC])
     505             : {
     506             : #if USE_FIXED
     507           0 :     par[ 0] = (int)(((int64_t)(par[ 0] + (unsigned)(par[ 1]>>1)) * 1431655765 + \
     508           0 :                       0x40000000) >> 31);
     509           0 :     par[ 1] = (int)(((int64_t)((par[ 1]>>1) + (unsigned)par[ 2]) * 1431655765 + \
     510           0 :                       0x40000000) >> 31);
     511           0 :     par[ 2] = (int)(((int64_t)(par[ 3] + (unsigned)(par[ 4]>>1)) * 1431655765 + \
     512           0 :                       0x40000000) >> 31);
     513           0 :     par[ 3] = (int)(((int64_t)((par[ 4]>>1) + (unsigned)par[ 5]) * 1431655765 + \
     514           0 :                       0x40000000) >> 31);
     515             : #else
     516           8 :     par[ 0] = (2*par[ 0] +   par[ 1]) * 0.33333333f;
     517           8 :     par[ 1] = (  par[ 1] + 2*par[ 2]) * 0.33333333f;
     518           8 :     par[ 2] = (2*par[ 3] +   par[ 4]) * 0.33333333f;
     519           8 :     par[ 3] = (  par[ 4] + 2*par[ 5]) * 0.33333333f;
     520             : #endif /* USE_FIXED */
     521           8 :     par[ 4] = AAC_HALF_SUM(par[ 6], par[ 7]);
     522           8 :     par[ 5] = AAC_HALF_SUM(par[ 8], par[ 9]);
     523           8 :     par[ 6] =    par[10];
     524           8 :     par[ 7] =    par[11];
     525           8 :     par[ 8] = AAC_HALF_SUM(par[12], par[13]);
     526           8 :     par[ 9] = AAC_HALF_SUM(par[14], par[15]);
     527           8 :     par[10] =    par[16];
     528           8 :     par[11] =    par[17];
     529           8 :     par[12] =    par[18];
     530           8 :     par[13] =    par[19];
     531           8 :     par[14] = AAC_HALF_SUM(par[20], par[21]);
     532           8 :     par[15] = AAC_HALF_SUM(par[22], par[23]);
     533           8 :     par[16] = AAC_HALF_SUM(par[24], par[25]);
     534           8 :     par[17] = AAC_HALF_SUM(par[26], par[27]);
     535             : #if USE_FIXED
     536           0 :     par[18] = (((par[28]+2)>>2) + ((par[29]+2)>>2) + ((par[30]+2)>>2) + ((par[31]+2)>>2));
     537             : #else
     538           8 :     par[18] = (  par[28] +   par[29] +   par[30] +   par[31]) * 0.25f;
     539             : #endif /* USE_FIXED */
     540           8 :     par[19] = AAC_HALF_SUM(par[32], par[33]);
     541           8 : }
     542             : 
     543         204 : static void map_idx_10_to_34(int8_t *par_mapped, const int8_t *par, int full)
     544             : {
     545         204 :     if (full) {
     546         204 :         par_mapped[33] = par[9];
     547         204 :         par_mapped[32] = par[9];
     548         204 :         par_mapped[31] = par[9];
     549         204 :         par_mapped[30] = par[9];
     550         204 :         par_mapped[29] = par[9];
     551         204 :         par_mapped[28] = par[9];
     552         204 :         par_mapped[27] = par[8];
     553         204 :         par_mapped[26] = par[8];
     554         204 :         par_mapped[25] = par[8];
     555         204 :         par_mapped[24] = par[8];
     556         204 :         par_mapped[23] = par[7];
     557         204 :         par_mapped[22] = par[7];
     558         204 :         par_mapped[21] = par[7];
     559         204 :         par_mapped[20] = par[7];
     560         204 :         par_mapped[19] = par[6];
     561         204 :         par_mapped[18] = par[6];
     562         204 :         par_mapped[17] = par[5];
     563         204 :         par_mapped[16] = par[5];
     564             :     } else {
     565           0 :         par_mapped[16] =      0;
     566             :     }
     567         204 :     par_mapped[15] = par[4];
     568         204 :     par_mapped[14] = par[4];
     569         204 :     par_mapped[13] = par[4];
     570         204 :     par_mapped[12] = par[4];
     571         204 :     par_mapped[11] = par[3];
     572         204 :     par_mapped[10] = par[3];
     573         204 :     par_mapped[ 9] = par[2];
     574         204 :     par_mapped[ 8] = par[2];
     575         204 :     par_mapped[ 7] = par[2];
     576         204 :     par_mapped[ 6] = par[2];
     577         204 :     par_mapped[ 5] = par[1];
     578         204 :     par_mapped[ 4] = par[1];
     579         204 :     par_mapped[ 3] = par[1];
     580         204 :     par_mapped[ 2] = par[0];
     581         204 :     par_mapped[ 1] = par[0];
     582         204 :     par_mapped[ 0] = par[0];
     583         204 : }
     584             : 
     585           0 : static void map_idx_20_to_34(int8_t *par_mapped, const int8_t *par, int full)
     586             : {
     587           0 :     if (full) {
     588           0 :         par_mapped[33] =  par[19];
     589           0 :         par_mapped[32] =  par[19];
     590           0 :         par_mapped[31] =  par[18];
     591           0 :         par_mapped[30] =  par[18];
     592           0 :         par_mapped[29] =  par[18];
     593           0 :         par_mapped[28] =  par[18];
     594           0 :         par_mapped[27] =  par[17];
     595           0 :         par_mapped[26] =  par[17];
     596           0 :         par_mapped[25] =  par[16];
     597           0 :         par_mapped[24] =  par[16];
     598           0 :         par_mapped[23] =  par[15];
     599           0 :         par_mapped[22] =  par[15];
     600           0 :         par_mapped[21] =  par[14];
     601           0 :         par_mapped[20] =  par[14];
     602           0 :         par_mapped[19] =  par[13];
     603           0 :         par_mapped[18] =  par[12];
     604           0 :         par_mapped[17] =  par[11];
     605             :     }
     606           0 :     par_mapped[16] =  par[10];
     607           0 :     par_mapped[15] =  par[ 9];
     608           0 :     par_mapped[14] =  par[ 9];
     609           0 :     par_mapped[13] =  par[ 8];
     610           0 :     par_mapped[12] =  par[ 8];
     611           0 :     par_mapped[11] =  par[ 7];
     612           0 :     par_mapped[10] =  par[ 6];
     613           0 :     par_mapped[ 9] =  par[ 5];
     614           0 :     par_mapped[ 8] =  par[ 5];
     615           0 :     par_mapped[ 7] =  par[ 4];
     616           0 :     par_mapped[ 6] =  par[ 4];
     617           0 :     par_mapped[ 5] =  par[ 3];
     618           0 :     par_mapped[ 4] = (par[ 2] + par[ 3]) / 2;
     619           0 :     par_mapped[ 3] =  par[ 2];
     620           0 :     par_mapped[ 2] =  par[ 1];
     621           0 :     par_mapped[ 1] = (par[ 0] + par[ 1]) / 2;
     622           0 :     par_mapped[ 0] =  par[ 0];
     623           0 : }
     624             : 
     625          16 : static void map_val_20_to_34(INTFLOAT par[PS_MAX_NR_IIDICC])
     626             : {
     627          16 :     par[33] =  par[19];
     628          16 :     par[32] =  par[19];
     629          16 :     par[31] =  par[18];
     630          16 :     par[30] =  par[18];
     631          16 :     par[29] =  par[18];
     632          16 :     par[28] =  par[18];
     633          16 :     par[27] =  par[17];
     634          16 :     par[26] =  par[17];
     635          16 :     par[25] =  par[16];
     636          16 :     par[24] =  par[16];
     637          16 :     par[23] =  par[15];
     638          16 :     par[22] =  par[15];
     639          16 :     par[21] =  par[14];
     640          16 :     par[20] =  par[14];
     641          16 :     par[19] =  par[13];
     642          16 :     par[18] =  par[12];
     643          16 :     par[17] =  par[11];
     644          16 :     par[16] =  par[10];
     645          16 :     par[15] =  par[ 9];
     646          16 :     par[14] =  par[ 9];
     647          16 :     par[13] =  par[ 8];
     648          16 :     par[12] =  par[ 8];
     649          16 :     par[11] =  par[ 7];
     650          16 :     par[10] =  par[ 6];
     651          16 :     par[ 9] =  par[ 5];
     652          16 :     par[ 8] =  par[ 5];
     653          16 :     par[ 7] =  par[ 4];
     654          16 :     par[ 6] =  par[ 4];
     655          16 :     par[ 5] =  par[ 3];
     656          16 :     par[ 4] = AAC_HALF_SUM(par[ 2], par[ 3]);
     657          16 :     par[ 3] =  par[ 2];
     658          16 :     par[ 2] =  par[ 1];
     659          16 :     par[ 1] = AAC_HALF_SUM(par[ 0], par[ 1]);
     660          16 : }
     661             : 
     662        1616 : static void decorrelation(PSContext *ps, INTFLOAT (*out)[32][2], const INTFLOAT (*s)[32][2], int is34)
     663             : {
     664        1616 :     LOCAL_ALIGNED_16(INTFLOAT, power, [34], [PS_QMF_TIME_SLOTS]);
     665        1616 :     LOCAL_ALIGNED_16(INTFLOAT, transient_gain, [34], [PS_QMF_TIME_SLOTS]);
     666        1616 :     INTFLOAT *peak_decay_nrg = ps->peak_decay_nrg;
     667        1616 :     INTFLOAT *power_smooth = ps->power_smooth;
     668        1616 :     INTFLOAT *peak_decay_diff_smooth = ps->peak_decay_diff_smooth;
     669        1616 :     INTFLOAT (*delay)[PS_QMF_TIME_SLOTS + PS_MAX_DELAY][2] = ps->delay;
     670        1616 :     INTFLOAT (*ap_delay)[PS_AP_LINKS][PS_QMF_TIME_SLOTS + PS_MAX_AP_DELAY][2] = ps->ap_delay;
     671             : #if !USE_FIXED
     672        1616 :     const float transient_impact  = 1.5f;
     673        1616 :     const float a_smooth          = 0.25f; ///< Smoothing coefficient
     674             : #endif /* USE_FIXED */
     675        1616 :     const int8_t *k_to_i = is34 ? k_to_i_34 : k_to_i_20;
     676             :     int i, k, m, n;
     677        1616 :     int n0 = 0, nL = 32;
     678        1616 :     const INTFLOAT peak_decay_factor = Q31(0.76592833836465f);
     679             : 
     680        1616 :     memset(power, 0, 34 * sizeof(*power));
     681             : 
     682        1616 :     if (is34 != ps->is34bands_old) {
     683           3 :         memset(ps->peak_decay_nrg,         0, sizeof(ps->peak_decay_nrg));
     684           3 :         memset(ps->power_smooth,           0, sizeof(ps->power_smooth));
     685           3 :         memset(ps->peak_decay_diff_smooth, 0, sizeof(ps->peak_decay_diff_smooth));
     686           3 :         memset(ps->delay,                  0, sizeof(ps->delay));
     687           3 :         memset(ps->ap_delay,               0, sizeof(ps->ap_delay));
     688             :     }
     689             : 
     690      118392 :     for (k = 0; k < NR_BANDS[is34]; k++) {
     691      116776 :         int i = k_to_i[k];
     692      116776 :         ps->dsp.add_squares(power[i], s[k], nL - n0);
     693             :     }
     694             : 
     695             :     //Transient detection
     696             : #if USE_FIXED
     697           0 :     for (i = 0; i < NR_PAR_BANDS[is34]; i++) {
     698           0 :         for (n = n0; n < nL; n++) {
     699             :             int decayed_peak;
     700           0 :             decayed_peak = (int)(((int64_t)peak_decay_factor * \
     701           0 :                                            peak_decay_nrg[i] + 0x40000000) >> 31);
     702           0 :             peak_decay_nrg[i] = FFMAX(decayed_peak, power[i][n]);
     703           0 :             power_smooth[i] += (power[i][n] + 2LL - power_smooth[i]) >> 2;
     704           0 :             peak_decay_diff_smooth[i] += (peak_decay_nrg[i] + 2LL - power[i][n] - \
     705           0 :                                           peak_decay_diff_smooth[i]) >> 2;
     706             : 
     707           0 :             if (peak_decay_diff_smooth[i]) {
     708           0 :                 transient_gain[i][n] = FFMIN(power_smooth[i]*43691LL / peak_decay_diff_smooth[i], 1<<16);
     709             :             } else
     710           0 :                 transient_gain[i][n] = 1 << 16;
     711             :         }
     712             :     }
     713             : #else
     714       35364 :     for (i = 0; i < NR_PAR_BANDS[is34]; i++) {
     715     1113684 :         for (n = n0; n < nL; n++) {
     716     1079936 :             float decayed_peak = peak_decay_factor * peak_decay_nrg[i];
     717             :             float denom;
     718     1079936 :             peak_decay_nrg[i] = FFMAX(decayed_peak, power[i][n]);
     719     1079936 :             power_smooth[i] += a_smooth * (power[i][n] - power_smooth[i]);
     720     1079936 :             peak_decay_diff_smooth[i] += a_smooth * (peak_decay_nrg[i] - power[i][n] - peak_decay_diff_smooth[i]);
     721     1079936 :             denom = transient_impact * peak_decay_diff_smooth[i];
     722     2159872 :             transient_gain[i][n]   = (denom > power_smooth[i]) ?
     723     1079936 :                                          power_smooth[i] / denom : 1.0f;
     724             :         }
     725             :     }
     726             : 
     727             : #endif /* USE_FIXED */
     728             :     //Decorrelation and transient reduction
     729             :     //                         PS_AP_LINKS - 1
     730             :     //                               -----
     731             :     //                                | |  Q_fract_allpass[k][m]*z^-link_delay[m] - a[m]*g_decay_slope[k]
     732             :     //H[k][z] = z^-2 * phi_fract[k] * | | ----------------------------------------------------------------
     733             :     //                                | | 1 - a[m]*g_decay_slope[k]*Q_fract_allpass[k][m]*z^-link_delay[m]
     734             :     //                               m = 0
     735             :     //d[k][z] (out) = transient_gain_mapped[k][z] * H[k][z] * s[k][z]
     736       52136 :     for (k = 0; k < NR_ALLPASS_BANDS[is34]; k++) {
     737       50520 :         int b = k_to_i[k];
     738             : #if USE_FIXED
     739             :         int g_decay_slope;
     740             : 
     741           0 :         if (k - DECAY_CUTOFF[is34] <= 0) {
     742           0 :           g_decay_slope = 1 << 30;
     743             :         }
     744           0 :         else if (k - DECAY_CUTOFF[is34] >= 20) {
     745           0 :           g_decay_slope = 0;
     746             :         }
     747             :         else {
     748           0 :           g_decay_slope = (1 << 30) - DECAY_SLOPE * (k - DECAY_CUTOFF[is34]);
     749             :         }
     750             : #else
     751       50520 :         float g_decay_slope = 1.f - DECAY_SLOPE * (k - DECAY_CUTOFF[is34]);
     752       50520 :         g_decay_slope = av_clipf(g_decay_slope, 0.f, 1.f);
     753             : #endif /* USE_FIXED */
     754       50520 :         memcpy(delay[k], delay[k]+nL, PS_MAX_DELAY*sizeof(delay[k][0]));
     755       50520 :         memcpy(delay[k]+PS_MAX_DELAY, s[k], numQMFSlots*sizeof(delay[k][0]));
     756      202080 :         for (m = 0; m < PS_AP_LINKS; m++) {
     757      151560 :             memcpy(ap_delay[k][m],   ap_delay[k][m]+numQMFSlots,           5*sizeof(ap_delay[k][m][0]));
     758             :         }
     759      101040 :         ps->dsp.decorrelate(out[k], delay[k] + PS_MAX_DELAY - 2, ap_delay[k],
     760       50520 :                             phi_fract[is34][k],
     761       50520 :                             (const INTFLOAT (*)[2]) Q_fract_allpass[is34][k],
     762       50520 :                             transient_gain[b], g_decay_slope, nL - n0);
     763             :     }
     764       21008 :     for (; k < SHORT_DELAY_BAND[is34]; k++) {
     765       19392 :         int i = k_to_i[k];
     766       19392 :         memcpy(delay[k], delay[k]+nL, PS_MAX_DELAY*sizeof(delay[k][0]));
     767       19392 :         memcpy(delay[k]+PS_MAX_DELAY, s[k], numQMFSlots*sizeof(delay[k][0]));
     768             :         //H = delay 14
     769       38784 :         ps->dsp.mul_pair_single(out[k], delay[k] + PS_MAX_DELAY - 14,
     770       19392 :                                 transient_gain[i], nL - n0);
     771             :     }
     772       48480 :     for (; k < NR_BANDS[is34]; k++) {
     773       46864 :         int i = k_to_i[k];
     774       46864 :         memcpy(delay[k], delay[k]+nL, PS_MAX_DELAY*sizeof(delay[k][0]));
     775       46864 :         memcpy(delay[k]+PS_MAX_DELAY, s[k], numQMFSlots*sizeof(delay[k][0]));
     776             :         //H = delay 1
     777       93728 :         ps->dsp.mul_pair_single(out[k], delay[k] + PS_MAX_DELAY - 1,
     778       46864 :                                 transient_gain[i], nL - n0);
     779             :     }
     780        1616 : }
     781             : 
     782         204 : static void remap34(int8_t (**p_par_mapped)[PS_MAX_NR_IIDICC],
     783             :                     int8_t           (*par)[PS_MAX_NR_IIDICC],
     784             :                     int num_par, int num_env, int full)
     785             : {
     786         204 :     int8_t (*par_mapped)[PS_MAX_NR_IIDICC] = *p_par_mapped;
     787             :     int e;
     788         204 :     if (num_par == 20 || num_par == 11) {
     789           0 :         for (e = 0; e < num_env; e++) {
     790           0 :             map_idx_20_to_34(par_mapped[e], par[e], full);
     791             :         }
     792         306 :     } else if (num_par == 10 || num_par == 5) {
     793         306 :         for (e = 0; e < num_env; e++) {
     794         204 :             map_idx_10_to_34(par_mapped[e], par[e], full);
     795             :         }
     796             :     } else {
     797         102 :         *p_par_mapped = par;
     798             :     }
     799         204 : }
     800             : 
     801        3134 : static void remap20(int8_t (**p_par_mapped)[PS_MAX_NR_IIDICC],
     802             :                     int8_t           (*par)[PS_MAX_NR_IIDICC],
     803             :                     int num_par, int num_env, int full)
     804             : {
     805        3134 :     int8_t (*par_mapped)[PS_MAX_NR_IIDICC] = *p_par_mapped;
     806             :     int e;
     807        3135 :     if (num_par == 34 || num_par == 17) {
     808           2 :         for (e = 0; e < num_env; e++) {
     809           1 :             map_idx_34_to_20(par_mapped[e], par[e], full);
     810             :         }
     811        3134 :     } else if (num_par == 10 || num_par == 5) {
     812           2 :         for (e = 0; e < num_env; e++) {
     813           1 :             map_idx_10_to_20(par_mapped[e], par[e], full);
     814             :         }
     815             :     } else {
     816        3132 :         *p_par_mapped = par;
     817             :     }
     818        3134 : }
     819             : 
     820        1616 : static void stereo_processing(PSContext *ps, INTFLOAT (*l)[32][2], INTFLOAT (*r)[32][2], int is34)
     821             : {
     822             :     int e, b, k;
     823             : 
     824        1616 :     INTFLOAT (*H11)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H11;
     825        1616 :     INTFLOAT (*H12)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H12;
     826        1616 :     INTFLOAT (*H21)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H21;
     827        1616 :     INTFLOAT (*H22)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H22;
     828        1616 :     int8_t *opd_hist = ps->opd_hist;
     829        1616 :     int8_t *ipd_hist = ps->ipd_hist;
     830             :     int8_t iid_mapped_buf[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC];
     831             :     int8_t icc_mapped_buf[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC];
     832             :     int8_t ipd_mapped_buf[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC];
     833             :     int8_t opd_mapped_buf[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC];
     834        1616 :     int8_t (*iid_mapped)[PS_MAX_NR_IIDICC] = iid_mapped_buf;
     835        1616 :     int8_t (*icc_mapped)[PS_MAX_NR_IIDICC] = icc_mapped_buf;
     836        1616 :     int8_t (*ipd_mapped)[PS_MAX_NR_IIDICC] = ipd_mapped_buf;
     837        1616 :     int8_t (*opd_mapped)[PS_MAX_NR_IIDICC] = opd_mapped_buf;
     838        1616 :     const int8_t *k_to_i = is34 ? k_to_i_34 : k_to_i_20;
     839        1616 :     TABLE_CONST INTFLOAT (*H_LUT)[8][4] = (PS_BASELINE || ps->icc_mode < 3) ? HA : HB;
     840             : 
     841             :     //Remapping
     842        1616 :     if (ps->num_env_old) {
     843        1590 :         memcpy(H11[0][0], H11[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H11[0][0][0]));
     844        1590 :         memcpy(H11[1][0], H11[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H11[1][0][0]));
     845        1590 :         memcpy(H12[0][0], H12[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H12[0][0][0]));
     846        1590 :         memcpy(H12[1][0], H12[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H12[1][0][0]));
     847        1590 :         memcpy(H21[0][0], H21[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H21[0][0][0]));
     848        1590 :         memcpy(H21[1][0], H21[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H21[1][0][0]));
     849        1590 :         memcpy(H22[0][0], H22[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H22[0][0][0]));
     850        1590 :         memcpy(H22[1][0], H22[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H22[1][0][0]));
     851             :     }
     852             : 
     853        1616 :     if (is34) {
     854         102 :         remap34(&iid_mapped, ps->iid_par, ps->nr_iid_par, ps->num_env, 1);
     855         102 :         remap34(&icc_mapped, ps->icc_par, ps->nr_icc_par, ps->num_env, 1);
     856         102 :         if (ps->enable_ipdopd) {
     857           0 :             remap34(&ipd_mapped, ps->ipd_par, ps->nr_ipdopd_par, ps->num_env, 0);
     858           0 :             remap34(&opd_mapped, ps->opd_par, ps->nr_ipdopd_par, ps->num_env, 0);
     859             :         }
     860         102 :         if (!ps->is34bands_old) {
     861           2 :             map_val_20_to_34(H11[0][0]);
     862           2 :             map_val_20_to_34(H11[1][0]);
     863           2 :             map_val_20_to_34(H12[0][0]);
     864           2 :             map_val_20_to_34(H12[1][0]);
     865           2 :             map_val_20_to_34(H21[0][0]);
     866           2 :             map_val_20_to_34(H21[1][0]);
     867           2 :             map_val_20_to_34(H22[0][0]);
     868           2 :             map_val_20_to_34(H22[1][0]);
     869           2 :             ipdopd_reset(ipd_hist, opd_hist);
     870             :         }
     871             :     } else {
     872        1514 :         remap20(&iid_mapped, ps->iid_par, ps->nr_iid_par, ps->num_env, 1);
     873        1514 :         remap20(&icc_mapped, ps->icc_par, ps->nr_icc_par, ps->num_env, 1);
     874        1514 :         if (ps->enable_ipdopd) {
     875          53 :             remap20(&ipd_mapped, ps->ipd_par, ps->nr_ipdopd_par, ps->num_env, 0);
     876          53 :             remap20(&opd_mapped, ps->opd_par, ps->nr_ipdopd_par, ps->num_env, 0);
     877             :         }
     878        1514 :         if (ps->is34bands_old) {
     879           1 :             map_val_34_to_20(H11[0][0]);
     880           1 :             map_val_34_to_20(H11[1][0]);
     881           1 :             map_val_34_to_20(H12[0][0]);
     882           1 :             map_val_34_to_20(H12[1][0]);
     883           1 :             map_val_34_to_20(H21[0][0]);
     884           1 :             map_val_34_to_20(H21[1][0]);
     885           1 :             map_val_34_to_20(H22[0][0]);
     886           1 :             map_val_34_to_20(H22[1][0]);
     887           1 :             ipdopd_reset(ipd_hist, opd_hist);
     888             :         }
     889             :     }
     890             : 
     891             :     //Mixing
     892        3649 :     for (e = 0; e < ps->num_env; e++) {
     893       45549 :         for (b = 0; b < NR_PAR_BANDS[is34]; b++) {
     894             :             INTFLOAT h11, h12, h21, h22;
     895       43516 :             h11 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][0];
     896       43516 :             h12 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][1];
     897       43516 :             h21 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][2];
     898       43516 :             h22 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][3];
     899             : 
     900       43516 :             if (!PS_BASELINE && ps->enable_ipdopd && b < NR_IPDOPD_BANDS[is34]) {
     901             :                 //The spec say says to only run this smoother when enable_ipdopd
     902             :                 //is set but the reference decoder appears to run it constantly
     903             :                 INTFLOAT h11i, h12i, h21i, h22i;
     904             :                 INTFLOAT ipd_adj_re, ipd_adj_im;
     905        1144 :                 int opd_idx = opd_hist[b] * 8 + opd_mapped[e][b];
     906        1144 :                 int ipd_idx = ipd_hist[b] * 8 + ipd_mapped[e][b];
     907        1144 :                 INTFLOAT opd_re = pd_re_smooth[opd_idx];
     908        1144 :                 INTFLOAT opd_im = pd_im_smooth[opd_idx];
     909        1144 :                 INTFLOAT ipd_re = pd_re_smooth[ipd_idx];
     910        1144 :                 INTFLOAT ipd_im = pd_im_smooth[ipd_idx];
     911        1144 :                 opd_hist[b] = opd_idx & 0x3F;
     912        1144 :                 ipd_hist[b] = ipd_idx & 0x3F;
     913             : 
     914        1144 :                 ipd_adj_re = AAC_MADD30(opd_re, ipd_re, opd_im, ipd_im);
     915        1144 :                 ipd_adj_im = AAC_MSUB30(opd_im, ipd_re, opd_re, ipd_im);
     916        1144 :                 h11i = AAC_MUL30(h11,  opd_im);
     917        1144 :                 h11  = AAC_MUL30(h11,  opd_re);
     918        1144 :                 h12i = AAC_MUL30(h12,  ipd_adj_im);
     919        1144 :                 h12  = AAC_MUL30(h12,  ipd_adj_re);
     920        1144 :                 h21i = AAC_MUL30(h21,  opd_im);
     921        1144 :                 h21  = AAC_MUL30(h21,  opd_re);
     922        1144 :                 h22i = AAC_MUL30(h22,  ipd_adj_im);
     923        1144 :                 h22  = AAC_MUL30(h22,  ipd_adj_re);
     924        1144 :                 H11[1][e+1][b] = h11i;
     925        1144 :                 H12[1][e+1][b] = h12i;
     926        1144 :                 H21[1][e+1][b] = h21i;
     927        1144 :                 H22[1][e+1][b] = h22i;
     928             :             }
     929       43516 :             H11[0][e+1][b] = h11;
     930       43516 :             H12[0][e+1][b] = h12;
     931       43516 :             H21[0][e+1][b] = h21;
     932       43516 :             H22[0][e+1][b] = h22;
     933             :         }
     934      150456 :         for (k = 0; k < NR_BANDS[is34]; k++) {
     935      148423 :             LOCAL_ALIGNED_16(INTFLOAT, h, [2], [4]);
     936      148423 :             LOCAL_ALIGNED_16(INTFLOAT, h_step, [2], [4]);
     937      148423 :             int start = ps->border_position[e];
     938      148423 :             int stop  = ps->border_position[e+1];
     939      148423 :             INTFLOAT width = Q30(1.f) / ((stop - start) ? (stop - start) : 1);
     940             : #if USE_FIXED
     941           0 :             width = FFMIN(2U*width, INT_MAX);
     942             : #endif
     943      148423 :             b = k_to_i[k];
     944      148423 :             h[0][0] = H11[0][e][b];
     945      148423 :             h[0][1] = H12[0][e][b];
     946      148423 :             h[0][2] = H21[0][e][b];
     947      148423 :             h[0][3] = H22[0][e][b];
     948      148423 :             if (!PS_BASELINE && ps->enable_ipdopd) {
     949             :             //Is this necessary? ps_04_new seems unchanged
     950        7384 :             if ((is34 && k <= 13 && k >= 9) || (!is34 && k <= 1)) {
     951         208 :                 h[1][0] = -H11[1][e][b];
     952         208 :                 h[1][1] = -H12[1][e][b];
     953         208 :                 h[1][2] = -H21[1][e][b];
     954         208 :                 h[1][3] = -H22[1][e][b];
     955             :             } else {
     956        7176 :                 h[1][0] = H11[1][e][b];
     957        7176 :                 h[1][1] = H12[1][e][b];
     958        7176 :                 h[1][2] = H21[1][e][b];
     959        7176 :                 h[1][3] = H22[1][e][b];
     960             :             }
     961             :             }
     962             :             //Interpolation
     963      148423 :             h_step[0][0] = AAC_MSUB31_V3(H11[0][e+1][b], h[0][0], width);
     964      148423 :             h_step[0][1] = AAC_MSUB31_V3(H12[0][e+1][b], h[0][1], width);
     965      148423 :             h_step[0][2] = AAC_MSUB31_V3(H21[0][e+1][b], h[0][2], width);
     966      148423 :             h_step[0][3] = AAC_MSUB31_V3(H22[0][e+1][b], h[0][3], width);
     967      148423 :             if (!PS_BASELINE && ps->enable_ipdopd) {
     968        7384 :                 h_step[1][0] = AAC_MSUB31_V3(H11[1][e+1][b], h[1][0], width);
     969        7384 :                 h_step[1][1] = AAC_MSUB31_V3(H12[1][e+1][b], h[1][1], width);
     970        7384 :                 h_step[1][2] = AAC_MSUB31_V3(H21[1][e+1][b], h[1][2], width);
     971        7384 :                 h_step[1][3] = AAC_MSUB31_V3(H22[1][e+1][b], h[1][3], width);
     972             :             }
     973      148423 :             if (stop - start)
     974      445269 :                 ps->dsp.stereo_interpolate[!PS_BASELINE && ps->enable_ipdopd](
     975      296846 :                     l[k] + 1 + start, r[k] + 1 + start,
     976             :                     h, h_step, stop - start);
     977             :         }
     978             :     }
     979        1616 : }
     980             : 
     981        1616 : int AAC_RENAME(ff_ps_apply)(AVCodecContext *avctx, PSContext *ps, INTFLOAT L[2][38][64], INTFLOAT R[2][38][64], int top)
     982             : {
     983        1616 :     INTFLOAT (*Lbuf)[32][2] = ps->Lbuf;
     984        1616 :     INTFLOAT (*Rbuf)[32][2] = ps->Rbuf;
     985        1616 :     const int len = 32;
     986        1616 :     int is34 = ps->is34bands;
     987             : 
     988        1616 :     top += NR_BANDS[is34] - 64;
     989        1616 :     memset(ps->delay+top, 0, (NR_BANDS[is34] - top)*sizeof(ps->delay[0]));
     990        1616 :     if (top < NR_ALLPASS_BANDS[is34])
     991           0 :         memset(ps->ap_delay + top, 0, (NR_ALLPASS_BANDS[is34] - top)*sizeof(ps->ap_delay[0]));
     992             : 
     993        1616 :     hybrid_analysis(&ps->dsp, Lbuf, ps->in_buf, L, is34, len);
     994        1616 :     decorrelation(ps, Rbuf, (const INTFLOAT (*)[32][2]) Lbuf, is34);
     995        1616 :     stereo_processing(ps, Lbuf, Rbuf, is34);
     996        1616 :     hybrid_synthesis(&ps->dsp, L, Lbuf, is34, len);
     997        1616 :     hybrid_synthesis(&ps->dsp, R, Rbuf, is34, len);
     998             : 
     999        1616 :     return 0;
    1000             : }
    1001             : 
    1002             : #define PS_INIT_VLC_STATIC(num, size) \
    1003             :     INIT_VLC_STATIC(&vlc_ps[num], 9, ps_tmp[num].table_size / ps_tmp[num].elem_size,    \
    1004             :                     ps_tmp[num].ps_bits, 1, 1,                                          \
    1005             :                     ps_tmp[num].ps_codes, ps_tmp[num].elem_size, ps_tmp[num].elem_size, \
    1006             :                     size);
    1007             : 
    1008             : #define PS_VLC_ROW(name) \
    1009             :     { name ## _codes, name ## _bits, sizeof(name ## _codes), sizeof(name ## _codes[0]) }
    1010             : 
    1011         160 : av_cold void AAC_RENAME(ff_ps_init)(void) {
    1012             :     // Syntax initialization
    1013             :     static const struct {
    1014             :         const void *ps_codes, *ps_bits;
    1015             :         const unsigned int table_size, elem_size;
    1016             :     } ps_tmp[] = {
    1017             :         PS_VLC_ROW(huff_iid_df1),
    1018             :         PS_VLC_ROW(huff_iid_dt1),
    1019             :         PS_VLC_ROW(huff_iid_df0),
    1020             :         PS_VLC_ROW(huff_iid_dt0),
    1021             :         PS_VLC_ROW(huff_icc_df),
    1022             :         PS_VLC_ROW(huff_icc_dt),
    1023             :         PS_VLC_ROW(huff_ipd_df),
    1024             :         PS_VLC_ROW(huff_ipd_dt),
    1025             :         PS_VLC_ROW(huff_opd_df),
    1026             :         PS_VLC_ROW(huff_opd_dt),
    1027             :     };
    1028             : 
    1029         160 :     PS_INIT_VLC_STATIC(0, 1544);
    1030         160 :     PS_INIT_VLC_STATIC(1,  832);
    1031         160 :     PS_INIT_VLC_STATIC(2, 1024);
    1032         160 :     PS_INIT_VLC_STATIC(3, 1036);
    1033         160 :     PS_INIT_VLC_STATIC(4,  544);
    1034         160 :     PS_INIT_VLC_STATIC(5,  544);
    1035         160 :     PS_INIT_VLC_STATIC(6,  512);
    1036         160 :     PS_INIT_VLC_STATIC(7,  512);
    1037         160 :     PS_INIT_VLC_STATIC(8,  512);
    1038         160 :     PS_INIT_VLC_STATIC(9,  512);
    1039             : 
    1040         160 :     ps_tableinit();
    1041         160 : }
    1042             : 
    1043         343 : av_cold void AAC_RENAME(ff_ps_ctx_init)(PSContext *ps)
    1044             : {
    1045         343 :     AAC_RENAME(ff_psdsp_init)(&ps->dsp);
    1046         343 : }

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