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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6147 | serge | 1 | /* |
| 2 | * MPEG-4 Parametric Stereo decoding functions |
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| 3 | * Copyright (c) 2010 Alex Converse |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | * |
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| 21 | * Note: Rounding-to-nearest used unless otherwise stated |
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| 22 | * |
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| 23 | */ |
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| 24 | |||
| 25 | #include |
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| 26 | #include "libavutil/common.h" |
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| 27 | #include "libavutil/mathematics.h" |
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| 28 | #include "avcodec.h" |
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| 29 | #include "get_bits.h" |
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| 30 | #include "aacps.h" |
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| 31 | #if USE_FIXED |
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| 32 | #include "aacps_fixed_tablegen.h" |
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| 33 | #else |
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| 34 | #include "libavutil/internal.h" |
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| 35 | #include "aacps_tablegen.h" |
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| 36 | #endif /* USE_FIXED */ |
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| 37 | #include "aacpsdata.c" |
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| 38 | |||
| 39 | #define PS_BASELINE 0 ///< Operate in Baseline PS mode |
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| 40 | ///< Baseline implies 10 or 20 stereo bands, |
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| 41 | ///< mixing mode A, and no ipd/opd |
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| 42 | |||
| 43 | #define numQMFSlots 32 //numTimeSlots * RATE |
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| 44 | |||
| 45 | static const int8_t num_env_tab[2][4] = { |
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| 46 | { 0, 1, 2, 4, }, |
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| 47 | { 1, 2, 3, 4, }, |
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| 48 | }; |
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| 49 | |||
| 50 | static const int8_t nr_iidicc_par_tab[] = { |
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| 51 | 10, 20, 34, 10, 20, 34, |
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| 52 | }; |
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| 53 | |||
| 54 | static const int8_t nr_iidopd_par_tab[] = { |
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| 55 | 5, 11, 17, 5, 11, 17, |
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| 56 | }; |
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| 57 | |||
| 58 | enum { |
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| 59 | huff_iid_df1, |
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| 60 | huff_iid_dt1, |
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| 61 | huff_iid_df0, |
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| 62 | huff_iid_dt0, |
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| 63 | huff_icc_df, |
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| 64 | huff_icc_dt, |
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| 65 | huff_ipd_df, |
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| 66 | huff_ipd_dt, |
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| 67 | huff_opd_df, |
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| 68 | huff_opd_dt, |
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| 69 | }; |
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| 70 | |||
| 71 | static const int huff_iid[] = { |
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| 72 | huff_iid_df0, |
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| 73 | huff_iid_df1, |
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| 74 | huff_iid_dt0, |
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| 75 | huff_iid_dt1, |
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| 76 | }; |
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| 77 | |||
| 78 | static VLC vlc_ps[10]; |
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| 79 | |||
| 80 | #define READ_PAR_DATA(PAR, OFFSET, MASK, ERR_CONDITION) \ |
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| 81 | /** \ |
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| 82 | * Read Inter-channel Intensity Difference/Inter-Channel Coherence/ \ |
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| 83 | * Inter-channel Phase Difference/Overall Phase Difference parameters from the \ |
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| 84 | * bitstream. \ |
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| 85 | * \ |
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| 86 | * @param avctx contains the current codec context \ |
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| 87 | * @param gb pointer to the input bitstream \ |
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| 88 | * @param ps pointer to the Parametric Stereo context \ |
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| 89 | * @param PAR pointer to the parameter to be read \ |
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| 90 | * @param e envelope to decode \ |
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| 91 | * @param dt 1: time delta-coded, 0: frequency delta-coded \ |
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| 92 | */ \ |
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| 93 | static int read_ ## PAR ## _data(AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, \ |
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| 94 | int8_t (*PAR)[PS_MAX_NR_IIDICC], int table_idx, int e, int dt) \ |
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| 95 | { \ |
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| 96 | int b, num = ps->nr_ ## PAR ## _par; \ |
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| 97 | VLC_TYPE (*vlc_table)[2] = vlc_ps[table_idx].table; \ |
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| 98 | if (dt) { \ |
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| 99 | int e_prev = e ? e - 1 : ps->num_env_old - 1; \ |
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| 100 | e_prev = FFMAX(e_prev, 0); \ |
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| 101 | for (b = 0; b < num; b++) { \ |
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| 102 | int val = PAR[e_prev][b] + get_vlc2(gb, vlc_table, 9, 3) - OFFSET; \ |
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| 103 | if (MASK) val &= MASK; \ |
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| 104 | PAR[e][b] = val; \ |
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| 105 | if (ERR_CONDITION) \ |
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| 106 | goto err; \ |
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| 107 | } \ |
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| 108 | } else { \ |
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| 109 | int val = 0; \ |
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| 110 | for (b = 0; b < num; b++) { \ |
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| 111 | val += get_vlc2(gb, vlc_table, 9, 3) - OFFSET; \ |
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| 112 | if (MASK) val &= MASK; \ |
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| 113 | PAR[e][b] = val; \ |
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| 114 | if (ERR_CONDITION) \ |
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| 115 | goto err; \ |
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| 116 | } \ |
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| 117 | } \ |
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| 118 | return 0; \ |
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| 119 | err: \ |
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| 120 | av_log(avctx, AV_LOG_ERROR, "illegal "#PAR"\n"); \ |
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| 121 | return -1; \ |
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| 122 | } |
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| 123 | |||
| 124 | READ_PAR_DATA(iid, huff_offset[table_idx], 0, FFABS(ps->iid_par[e][b]) > 7 + 8 * ps->iid_quant) |
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| 125 | READ_PAR_DATA(icc, huff_offset[table_idx], 0, ps->icc_par[e][b] > 7U) |
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| 126 | READ_PAR_DATA(ipdopd, 0, 0x07, 0) |
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| 127 | |||
| 128 | static int ps_read_extension_data(GetBitContext *gb, PSContext *ps, int ps_extension_id) |
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| 129 | { |
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| 130 | int e; |
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| 131 | int count = get_bits_count(gb); |
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| 132 | |||
| 133 | if (ps_extension_id) |
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| 134 | return 0; |
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| 135 | |||
| 136 | ps->enable_ipdopd = get_bits1(gb); |
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| 137 | if (ps->enable_ipdopd) { |
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| 138 | for (e = 0; e < ps->num_env; e++) { |
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| 139 | int dt = get_bits1(gb); |
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| 140 | read_ipdopd_data(NULL, gb, ps, ps->ipd_par, dt ? huff_ipd_dt : huff_ipd_df, e, dt); |
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| 141 | dt = get_bits1(gb); |
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| 142 | read_ipdopd_data(NULL, gb, ps, ps->opd_par, dt ? huff_opd_dt : huff_opd_df, e, dt); |
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| 143 | } |
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| 144 | } |
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| 145 | skip_bits1(gb); //reserved_ps |
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| 146 | return get_bits_count(gb) - count; |
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| 147 | } |
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| 148 | |||
| 149 | static void ipdopd_reset(int8_t *ipd_hist, int8_t *opd_hist) |
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| 150 | { |
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| 151 | int i; |
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| 152 | for (i = 0; i < PS_MAX_NR_IPDOPD; i++) { |
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| 153 | opd_hist[i] = 0; |
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| 154 | ipd_hist[i] = 0; |
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| 155 | } |
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| 156 | } |
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| 157 | |||
| 158 | int AAC_RENAME(ff_ps_read_data)(AVCodecContext *avctx, GetBitContext *gb_host, PSContext *ps, int bits_left) |
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| 159 | { |
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| 160 | int e; |
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| 161 | int bit_count_start = get_bits_count(gb_host); |
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| 162 | int header; |
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| 163 | int bits_consumed; |
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| 164 | GetBitContext gbc = *gb_host, *gb = &gbc; |
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| 165 | |||
| 166 | header = get_bits1(gb); |
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| 167 | if (header) { //enable_ps_header |
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| 168 | ps->enable_iid = get_bits1(gb); |
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| 169 | if (ps->enable_iid) { |
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| 170 | int iid_mode = get_bits(gb, 3); |
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| 171 | if (iid_mode > 5) { |
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| 172 | av_log(avctx, AV_LOG_ERROR, "iid_mode %d is reserved.\n", |
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| 173 | iid_mode); |
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| 174 | goto err; |
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| 175 | } |
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| 176 | ps->nr_iid_par = nr_iidicc_par_tab[iid_mode]; |
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| 177 | ps->iid_quant = iid_mode > 2; |
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| 178 | ps->nr_ipdopd_par = nr_iidopd_par_tab[iid_mode]; |
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| 179 | } |
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| 180 | ps->enable_icc = get_bits1(gb); |
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| 181 | if (ps->enable_icc) { |
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| 182 | ps->icc_mode = get_bits(gb, 3); |
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| 183 | if (ps->icc_mode > 5) { |
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| 184 | av_log(avctx, AV_LOG_ERROR, "icc_mode %d is reserved.\n", |
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| 185 | ps->icc_mode); |
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| 186 | goto err; |
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| 187 | } |
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| 188 | ps->nr_icc_par = nr_iidicc_par_tab[ps->icc_mode]; |
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| 189 | } |
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| 190 | ps->enable_ext = get_bits1(gb); |
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| 191 | } |
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| 192 | |||
| 193 | ps->frame_class = get_bits1(gb); |
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| 194 | ps->num_env_old = ps->num_env; |
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| 195 | ps->num_env = num_env_tab[ps->frame_class][get_bits(gb, 2)]; |
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| 196 | |||
| 197 | ps->border_position[0] = -1; |
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| 198 | if (ps->frame_class) { |
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| 199 | for (e = 1; e <= ps->num_env; e++) |
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| 200 | ps->border_position[e] = get_bits(gb, 5); |
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| 201 | } else |
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| 202 | for (e = 1; e <= ps->num_env; e++) |
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| 203 | ps->border_position[e] = (e * numQMFSlots >> ff_log2_tab[ps->num_env]) - 1; |
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| 204 | |||
| 205 | if (ps->enable_iid) { |
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| 206 | for (e = 0; e < ps->num_env; e++) { |
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| 207 | int dt = get_bits1(gb); |
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| 208 | if (read_iid_data(avctx, gb, ps, ps->iid_par, huff_iid[2*dt+ps->iid_quant], e, dt)) |
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| 209 | goto err; |
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| 210 | } |
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| 211 | } else |
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| 212 | memset(ps->iid_par, 0, sizeof(ps->iid_par)); |
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| 213 | |||
| 214 | if (ps->enable_icc) |
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| 215 | for (e = 0; e < ps->num_env; e++) { |
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| 216 | int dt = get_bits1(gb); |
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| 217 | if (read_icc_data(avctx, gb, ps, ps->icc_par, dt ? huff_icc_dt : huff_icc_df, e, dt)) |
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| 218 | goto err; |
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| 219 | } |
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| 220 | else |
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| 221 | memset(ps->icc_par, 0, sizeof(ps->icc_par)); |
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| 222 | |||
| 223 | if (ps->enable_ext) { |
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| 224 | int cnt = get_bits(gb, 4); |
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| 225 | if (cnt == 15) { |
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| 226 | cnt += get_bits(gb, 8); |
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| 227 | } |
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| 228 | cnt *= 8; |
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| 229 | while (cnt > 7) { |
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| 230 | int ps_extension_id = get_bits(gb, 2); |
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| 231 | cnt -= 2 + ps_read_extension_data(gb, ps, ps_extension_id); |
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| 232 | } |
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| 233 | if (cnt < 0) { |
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| 234 | av_log(avctx, AV_LOG_ERROR, "ps extension overflow %d\n", cnt); |
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| 235 | goto err; |
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| 236 | } |
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| 237 | skip_bits(gb, cnt); |
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| 238 | } |
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| 239 | |||
| 240 | ps->enable_ipdopd &= !PS_BASELINE; |
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| 241 | |||
| 242 | //Fix up envelopes |
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| 243 | if (!ps->num_env || ps->border_position[ps->num_env] < numQMFSlots - 1) { |
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| 244 | //Create a fake envelope |
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| 245 | int source = ps->num_env ? ps->num_env - 1 : ps->num_env_old - 1; |
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| 246 | int b; |
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| 247 | if (source >= 0 && source != ps->num_env) { |
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| 248 | if (ps->enable_iid) { |
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| 249 | memcpy(ps->iid_par+ps->num_env, ps->iid_par+source, sizeof(ps->iid_par[0])); |
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| 250 | } |
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| 251 | if (ps->enable_icc) { |
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| 252 | memcpy(ps->icc_par+ps->num_env, ps->icc_par+source, sizeof(ps->icc_par[0])); |
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| 253 | } |
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| 254 | if (ps->enable_ipdopd) { |
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| 255 | memcpy(ps->ipd_par+ps->num_env, ps->ipd_par+source, sizeof(ps->ipd_par[0])); |
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| 256 | memcpy(ps->opd_par+ps->num_env, ps->opd_par+source, sizeof(ps->opd_par[0])); |
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| 257 | } |
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| 258 | } |
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| 259 | if (ps->enable_iid){ |
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| 260 | for (b = 0; b < ps->nr_iid_par; b++) { |
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| 261 | if (FFABS(ps->iid_par[ps->num_env][b]) > 7 + 8 * ps->iid_quant) { |
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| 262 | av_log(avctx, AV_LOG_ERROR, "iid_par invalid\n"); |
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| 263 | goto err; |
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| 264 | } |
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| 265 | } |
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| 266 | } |
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| 267 | if (ps->enable_icc){ |
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| 268 | for (b = 0; b < ps->nr_iid_par; b++) { |
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| 269 | if (ps->icc_par[ps->num_env][b] > 7U) { |
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| 270 | av_log(avctx, AV_LOG_ERROR, "icc_par invalid\n"); |
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| 271 | goto err; |
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| 272 | } |
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| 273 | } |
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| 274 | } |
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| 275 | ps->num_env++; |
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| 276 | ps->border_position[ps->num_env] = numQMFSlots - 1; |
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| 277 | } |
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| 278 | |||
| 279 | |||
| 280 | ps->is34bands_old = ps->is34bands; |
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| 281 | if (!PS_BASELINE && (ps->enable_iid || ps->enable_icc)) |
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| 282 | ps->is34bands = (ps->enable_iid && ps->nr_iid_par == 34) || |
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| 283 | (ps->enable_icc && ps->nr_icc_par == 34); |
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| 284 | |||
| 285 | //Baseline |
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| 286 | if (!ps->enable_ipdopd) { |
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| 287 | memset(ps->ipd_par, 0, sizeof(ps->ipd_par)); |
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| 288 | memset(ps->opd_par, 0, sizeof(ps->opd_par)); |
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| 289 | } |
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| 290 | |||
| 291 | if (header) |
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| 292 | ps->start = 1; |
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| 293 | |||
| 294 | bits_consumed = get_bits_count(gb) - bit_count_start; |
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| 295 | if (bits_consumed <= bits_left) { |
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| 296 | skip_bits_long(gb_host, bits_consumed); |
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| 297 | return bits_consumed; |
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| 298 | } |
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| 299 | av_log(avctx, AV_LOG_ERROR, "Expected to read %d PS bits actually read %d.\n", bits_left, bits_consumed); |
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| 300 | err: |
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| 301 | ps->start = 0; |
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| 302 | skip_bits_long(gb_host, bits_left); |
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| 303 | memset(ps->iid_par, 0, sizeof(ps->iid_par)); |
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| 304 | memset(ps->icc_par, 0, sizeof(ps->icc_par)); |
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| 305 | memset(ps->ipd_par, 0, sizeof(ps->ipd_par)); |
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| 306 | memset(ps->opd_par, 0, sizeof(ps->opd_par)); |
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| 307 | return bits_left; |
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| 308 | } |
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| 309 | |||
| 310 | /** Split one subband into 2 subsubbands with a symmetric real filter. |
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| 311 | * The filter must have its non-center even coefficients equal to zero. */ |
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| 312 | static void hybrid2_re(INTFLOAT (*in)[2], INTFLOAT (*out)[32][2], const INTFLOAT filter[8], int len, int reverse) |
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| 313 | { |
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| 314 | int i, j; |
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| 315 | for (i = 0; i < len; i++, in++) { |
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| 316 | INT64FLOAT re_in = AAC_MUL31(filter[6], in[6][0]); //real inphase |
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| 317 | INT64FLOAT re_op = 0.0f; //real out of phase |
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| 318 | INT64FLOAT im_in = AAC_MUL31(filter[6], in[6][1]); //imag inphase |
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| 319 | INT64FLOAT im_op = 0.0f; //imag out of phase |
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| 320 | for (j = 0; j < 6; j += 2) { |
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| 321 | re_op += (INT64FLOAT)filter[j+1] * (in[j+1][0] + in[12-j-1][0]); |
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| 322 | im_op += (INT64FLOAT)filter[j+1] * (in[j+1][1] + in[12-j-1][1]); |
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| 323 | } |
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| 324 | |||
| 325 | #if USE_FIXED |
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| 326 | re_op = (re_op + 0x40000000) >> 31; |
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| 327 | im_op = (im_op + 0x40000000) >> 31; |
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| 328 | #endif /* USE_FIXED */ |
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| 329 | |||
| 330 | out[ reverse][i][0] = (INTFLOAT)(re_in + re_op); |
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| 331 | out[ reverse][i][1] = (INTFLOAT)(im_in + im_op); |
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| 332 | out[!reverse][i][0] = (INTFLOAT)(re_in - re_op); |
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| 333 | out[!reverse][i][1] = (INTFLOAT)(im_in - im_op); |
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| 334 | } |
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| 335 | } |
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| 336 | |||
| 337 | /** Split one subband into 6 subsubbands with a complex filter */ |
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| 338 | static void hybrid6_cx(PSDSPContext *dsp, INTFLOAT (*in)[2], INTFLOAT (*out)[32][2], |
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| 339 | TABLE_CONST INTFLOAT (*filter)[8][2], int len) |
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| 340 | { |
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| 341 | int i; |
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| 342 | int N = 8; |
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| 343 | LOCAL_ALIGNED_16(INTFLOAT, temp, [8], [2]); |
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| 344 | |||
| 345 | for (i = 0; i < len; i++, in++) { |
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| 346 | dsp->hybrid_analysis(temp, in, (const INTFLOAT (*)[8][2]) filter, 1, N); |
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| 347 | out[0][i][0] = temp[6][0]; |
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| 348 | out[0][i][1] = temp[6][1]; |
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| 349 | out[1][i][0] = temp[7][0]; |
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| 350 | out[1][i][1] = temp[7][1]; |
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| 351 | out[2][i][0] = temp[0][0]; |
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| 352 | out[2][i][1] = temp[0][1]; |
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| 353 | out[3][i][0] = temp[1][0]; |
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| 354 | out[3][i][1] = temp[1][1]; |
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| 355 | out[4][i][0] = temp[2][0] + temp[5][0]; |
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| 356 | out[4][i][1] = temp[2][1] + temp[5][1]; |
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| 357 | out[5][i][0] = temp[3][0] + temp[4][0]; |
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| 358 | out[5][i][1] = temp[3][1] + temp[4][1]; |
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| 359 | } |
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| 360 | } |
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| 361 | |||
| 362 | static void hybrid4_8_12_cx(PSDSPContext *dsp, |
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| 363 | INTFLOAT (*in)[2], INTFLOAT (*out)[32][2], |
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| 364 | TABLE_CONST INTFLOAT (*filter)[8][2], int N, int len) |
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| 365 | { |
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| 366 | int i; |
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| 367 | |||
| 368 | for (i = 0; i < len; i++, in++) { |
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| 369 | dsp->hybrid_analysis(out[0] + i, in, (const INTFLOAT (*)[8][2]) filter, 32, N); |
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| 370 | } |
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| 371 | } |
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| 372 | |||
| 373 | static void hybrid_analysis(PSDSPContext *dsp, INTFLOAT out[91][32][2], |
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| 374 | INTFLOAT in[5][44][2], INTFLOAT L[2][38][64], |
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| 375 | int is34, int len) |
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| 376 | { |
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| 377 | int i, j; |
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| 378 | for (i = 0; i < 5; i++) { |
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| 379 | for (j = 0; j < 38; j++) { |
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| 380 | in[i][j+6][0] = L[0][j][i]; |
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| 381 | in[i][j+6][1] = L[1][j][i]; |
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| 382 | } |
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| 383 | } |
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| 384 | if (is34) { |
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| 385 | hybrid4_8_12_cx(dsp, in[0], out, f34_0_12, 12, len); |
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| 386 | hybrid4_8_12_cx(dsp, in[1], out+12, f34_1_8, 8, len); |
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| 387 | hybrid4_8_12_cx(dsp, in[2], out+20, f34_2_4, 4, len); |
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| 388 | hybrid4_8_12_cx(dsp, in[3], out+24, f34_2_4, 4, len); |
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| 389 | hybrid4_8_12_cx(dsp, in[4], out+28, f34_2_4, 4, len); |
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| 390 | dsp->hybrid_analysis_ileave(out + 27, L, 5, len); |
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| 391 | } else { |
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| 392 | hybrid6_cx(dsp, in[0], out, f20_0_8, len); |
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| 393 | hybrid2_re(in[1], out+6, g1_Q2, len, 1); |
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| 394 | hybrid2_re(in[2], out+8, g1_Q2, len, 0); |
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| 395 | dsp->hybrid_analysis_ileave(out + 7, L, 3, len); |
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| 396 | } |
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| 397 | //update in_buf |
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| 398 | for (i = 0; i < 5; i++) { |
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| 399 | memcpy(in[i], in[i]+32, 6 * sizeof(in[i][0])); |
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| 400 | } |
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| 401 | } |
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| 402 | |||
| 403 | static void hybrid_synthesis(PSDSPContext *dsp, INTFLOAT out[2][38][64], |
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| 404 | INTFLOAT in[91][32][2], int is34, int len) |
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| 405 | { |
||
| 406 | int i, n; |
||
| 407 | if (is34) { |
||
| 408 | for (n = 0; n < len; n++) { |
||
| 409 | memset(out[0][n], 0, 5*sizeof(out[0][n][0])); |
||
| 410 | memset(out[1][n], 0, 5*sizeof(out[1][n][0])); |
||
| 411 | for (i = 0; i < 12; i++) { |
||
| 412 | out[0][n][0] += in[ i][n][0]; |
||
| 413 | out[1][n][0] += in[ i][n][1]; |
||
| 414 | } |
||
| 415 | for (i = 0; i < 8; i++) { |
||
| 416 | out[0][n][1] += in[12+i][n][0]; |
||
| 417 | out[1][n][1] += in[12+i][n][1]; |
||
| 418 | } |
||
| 419 | for (i = 0; i < 4; i++) { |
||
| 420 | out[0][n][2] += in[20+i][n][0]; |
||
| 421 | out[1][n][2] += in[20+i][n][1]; |
||
| 422 | out[0][n][3] += in[24+i][n][0]; |
||
| 423 | out[1][n][3] += in[24+i][n][1]; |
||
| 424 | out[0][n][4] += in[28+i][n][0]; |
||
| 425 | out[1][n][4] += in[28+i][n][1]; |
||
| 426 | } |
||
| 427 | } |
||
| 428 | dsp->hybrid_synthesis_deint(out, in + 27, 5, len); |
||
| 429 | } else { |
||
| 430 | for (n = 0; n < len; n++) { |
||
| 431 | out[0][n][0] = in[0][n][0] + in[1][n][0] + in[2][n][0] + |
||
| 432 | in[3][n][0] + in[4][n][0] + in[5][n][0]; |
||
| 433 | out[1][n][0] = in[0][n][1] + in[1][n][1] + in[2][n][1] + |
||
| 434 | in[3][n][1] + in[4][n][1] + in[5][n][1]; |
||
| 435 | out[0][n][1] = in[6][n][0] + in[7][n][0]; |
||
| 436 | out[1][n][1] = in[6][n][1] + in[7][n][1]; |
||
| 437 | out[0][n][2] = in[8][n][0] + in[9][n][0]; |
||
| 438 | out[1][n][2] = in[8][n][1] + in[9][n][1]; |
||
| 439 | } |
||
| 440 | dsp->hybrid_synthesis_deint(out, in + 7, 3, len); |
||
| 441 | } |
||
| 442 | } |
||
| 443 | |||
| 444 | /// All-pass filter decay slope |
||
| 445 | #define DECAY_SLOPE Q30(0.05f) |
||
| 446 | /// Number of frequency bands that can be addressed by the parameter index, b(k) |
||
| 447 | static const int NR_PAR_BANDS[] = { 20, 34 }; |
||
| 448 | static const int NR_IPDOPD_BANDS[] = { 11, 17 }; |
||
| 449 | /// Number of frequency bands that can be addressed by the sub subband index, k |
||
| 450 | static const int NR_BANDS[] = { 71, 91 }; |
||
| 451 | /// Start frequency band for the all-pass filter decay slope |
||
| 452 | static const int DECAY_CUTOFF[] = { 10, 32 }; |
||
| 453 | /// Number of all-pass filer bands |
||
| 454 | static const int NR_ALLPASS_BANDS[] = { 30, 50 }; |
||
| 455 | /// First stereo band using the short one sample delay |
||
| 456 | static const int SHORT_DELAY_BAND[] = { 42, 62 }; |
||
| 457 | |||
| 458 | /** Table 8.46 */ |
||
| 459 | static void map_idx_10_to_20(int8_t *par_mapped, const int8_t *par, int full) |
||
| 460 | { |
||
| 461 | int b; |
||
| 462 | if (full) |
||
| 463 | b = 9; |
||
| 464 | else { |
||
| 465 | b = 4; |
||
| 466 | par_mapped[10] = 0; |
||
| 467 | } |
||
| 468 | for (; b >= 0; b--) { |
||
| 469 | par_mapped[2*b+1] = par_mapped[2*b] = par[b]; |
||
| 470 | } |
||
| 471 | } |
||
| 472 | |||
| 473 | static void map_idx_34_to_20(int8_t *par_mapped, const int8_t *par, int full) |
||
| 474 | { |
||
| 475 | par_mapped[ 0] = (2*par[ 0] + par[ 1]) / 3; |
||
| 476 | par_mapped[ 1] = ( par[ 1] + 2*par[ 2]) / 3; |
||
| 477 | par_mapped[ 2] = (2*par[ 3] + par[ 4]) / 3; |
||
| 478 | par_mapped[ 3] = ( par[ 4] + 2*par[ 5]) / 3; |
||
| 479 | par_mapped[ 4] = ( par[ 6] + par[ 7]) / 2; |
||
| 480 | par_mapped[ 5] = ( par[ 8] + par[ 9]) / 2; |
||
| 481 | par_mapped[ 6] = par[10]; |
||
| 482 | par_mapped[ 7] = par[11]; |
||
| 483 | par_mapped[ 8] = ( par[12] + par[13]) / 2; |
||
| 484 | par_mapped[ 9] = ( par[14] + par[15]) / 2; |
||
| 485 | par_mapped[10] = par[16]; |
||
| 486 | if (full) { |
||
| 487 | par_mapped[11] = par[17]; |
||
| 488 | par_mapped[12] = par[18]; |
||
| 489 | par_mapped[13] = par[19]; |
||
| 490 | par_mapped[14] = ( par[20] + par[21]) / 2; |
||
| 491 | par_mapped[15] = ( par[22] + par[23]) / 2; |
||
| 492 | par_mapped[16] = ( par[24] + par[25]) / 2; |
||
| 493 | par_mapped[17] = ( par[26] + par[27]) / 2; |
||
| 494 | par_mapped[18] = ( par[28] + par[29] + par[30] + par[31]) / 4; |
||
| 495 | par_mapped[19] = ( par[32] + par[33]) / 2; |
||
| 496 | } |
||
| 497 | } |
||
| 498 | |||
| 499 | static void map_val_34_to_20(INTFLOAT par[PS_MAX_NR_IIDICC]) |
||
| 500 | { |
||
| 501 | #if USE_FIXED |
||
| 502 | par[ 0] = (int)(((int64_t)(par[ 0] + (par[ 1]>>1)) * 1431655765 + \ |
||
| 503 | 0x40000000) >> 31); |
||
| 504 | par[ 1] = (int)(((int64_t)((par[ 1]>>1) + par[ 2]) * 1431655765 + \ |
||
| 505 | 0x40000000) >> 31); |
||
| 506 | par[ 2] = (int)(((int64_t)(par[ 3] + (par[ 4]>>1)) * 1431655765 + \ |
||
| 507 | 0x40000000) >> 31); |
||
| 508 | par[ 3] = (int)(((int64_t)((par[ 4]>>1) + par[ 5]) * 1431655765 + \ |
||
| 509 | 0x40000000) >> 31); |
||
| 510 | #else |
||
| 511 | par[ 0] = (2*par[ 0] + par[ 1]) * 0.33333333f; |
||
| 512 | par[ 1] = ( par[ 1] + 2*par[ 2]) * 0.33333333f; |
||
| 513 | par[ 2] = (2*par[ 3] + par[ 4]) * 0.33333333f; |
||
| 514 | par[ 3] = ( par[ 4] + 2*par[ 5]) * 0.33333333f; |
||
| 515 | #endif /* USE_FIXED */ |
||
| 516 | par[ 4] = AAC_HALF_SUM(par[ 6], par[ 7]); |
||
| 517 | par[ 5] = AAC_HALF_SUM(par[ 8], par[ 9]); |
||
| 518 | par[ 6] = par[10]; |
||
| 519 | par[ 7] = par[11]; |
||
| 520 | par[ 8] = AAC_HALF_SUM(par[12], par[13]); |
||
| 521 | par[ 9] = AAC_HALF_SUM(par[14], par[15]); |
||
| 522 | par[10] = par[16]; |
||
| 523 | par[11] = par[17]; |
||
| 524 | par[12] = par[18]; |
||
| 525 | par[13] = par[19]; |
||
| 526 | par[14] = AAC_HALF_SUM(par[20], par[21]); |
||
| 527 | par[15] = AAC_HALF_SUM(par[22], par[23]); |
||
| 528 | par[16] = AAC_HALF_SUM(par[24], par[25]); |
||
| 529 | par[17] = AAC_HALF_SUM(par[26], par[27]); |
||
| 530 | #if USE_FIXED |
||
| 531 | par[18] = (((par[28]+2)>>2) + ((par[29]+2)>>2) + ((par[30]+2)>>2) + ((par[31]+2)>>2)); |
||
| 532 | #else |
||
| 533 | par[18] = ( par[28] + par[29] + par[30] + par[31]) * 0.25f; |
||
| 534 | #endif /* USE_FIXED */ |
||
| 535 | par[19] = AAC_HALF_SUM(par[32], par[33]); |
||
| 536 | } |
||
| 537 | |||
| 538 | static void map_idx_10_to_34(int8_t *par_mapped, const int8_t *par, int full) |
||
| 539 | { |
||
| 540 | if (full) { |
||
| 541 | par_mapped[33] = par[9]; |
||
| 542 | par_mapped[32] = par[9]; |
||
| 543 | par_mapped[31] = par[9]; |
||
| 544 | par_mapped[30] = par[9]; |
||
| 545 | par_mapped[29] = par[9]; |
||
| 546 | par_mapped[28] = par[9]; |
||
| 547 | par_mapped[27] = par[8]; |
||
| 548 | par_mapped[26] = par[8]; |
||
| 549 | par_mapped[25] = par[8]; |
||
| 550 | par_mapped[24] = par[8]; |
||
| 551 | par_mapped[23] = par[7]; |
||
| 552 | par_mapped[22] = par[7]; |
||
| 553 | par_mapped[21] = par[7]; |
||
| 554 | par_mapped[20] = par[7]; |
||
| 555 | par_mapped[19] = par[6]; |
||
| 556 | par_mapped[18] = par[6]; |
||
| 557 | par_mapped[17] = par[5]; |
||
| 558 | par_mapped[16] = par[5]; |
||
| 559 | } else { |
||
| 560 | par_mapped[16] = 0; |
||
| 561 | } |
||
| 562 | par_mapped[15] = par[4]; |
||
| 563 | par_mapped[14] = par[4]; |
||
| 564 | par_mapped[13] = par[4]; |
||
| 565 | par_mapped[12] = par[4]; |
||
| 566 | par_mapped[11] = par[3]; |
||
| 567 | par_mapped[10] = par[3]; |
||
| 568 | par_mapped[ 9] = par[2]; |
||
| 569 | par_mapped[ 8] = par[2]; |
||
| 570 | par_mapped[ 7] = par[2]; |
||
| 571 | par_mapped[ 6] = par[2]; |
||
| 572 | par_mapped[ 5] = par[1]; |
||
| 573 | par_mapped[ 4] = par[1]; |
||
| 574 | par_mapped[ 3] = par[1]; |
||
| 575 | par_mapped[ 2] = par[0]; |
||
| 576 | par_mapped[ 1] = par[0]; |
||
| 577 | par_mapped[ 0] = par[0]; |
||
| 578 | } |
||
| 579 | |||
| 580 | static void map_idx_20_to_34(int8_t *par_mapped, const int8_t *par, int full) |
||
| 581 | { |
||
| 582 | if (full) { |
||
| 583 | par_mapped[33] = par[19]; |
||
| 584 | par_mapped[32] = par[19]; |
||
| 585 | par_mapped[31] = par[18]; |
||
| 586 | par_mapped[30] = par[18]; |
||
| 587 | par_mapped[29] = par[18]; |
||
| 588 | par_mapped[28] = par[18]; |
||
| 589 | par_mapped[27] = par[17]; |
||
| 590 | par_mapped[26] = par[17]; |
||
| 591 | par_mapped[25] = par[16]; |
||
| 592 | par_mapped[24] = par[16]; |
||
| 593 | par_mapped[23] = par[15]; |
||
| 594 | par_mapped[22] = par[15]; |
||
| 595 | par_mapped[21] = par[14]; |
||
| 596 | par_mapped[20] = par[14]; |
||
| 597 | par_mapped[19] = par[13]; |
||
| 598 | par_mapped[18] = par[12]; |
||
| 599 | par_mapped[17] = par[11]; |
||
| 600 | } |
||
| 601 | par_mapped[16] = par[10]; |
||
| 602 | par_mapped[15] = par[ 9]; |
||
| 603 | par_mapped[14] = par[ 9]; |
||
| 604 | par_mapped[13] = par[ 8]; |
||
| 605 | par_mapped[12] = par[ 8]; |
||
| 606 | par_mapped[11] = par[ 7]; |
||
| 607 | par_mapped[10] = par[ 6]; |
||
| 608 | par_mapped[ 9] = par[ 5]; |
||
| 609 | par_mapped[ 8] = par[ 5]; |
||
| 610 | par_mapped[ 7] = par[ 4]; |
||
| 611 | par_mapped[ 6] = par[ 4]; |
||
| 612 | par_mapped[ 5] = par[ 3]; |
||
| 613 | par_mapped[ 4] = (par[ 2] + par[ 3]) / 2; |
||
| 614 | par_mapped[ 3] = par[ 2]; |
||
| 615 | par_mapped[ 2] = par[ 1]; |
||
| 616 | par_mapped[ 1] = (par[ 0] + par[ 1]) / 2; |
||
| 617 | par_mapped[ 0] = par[ 0]; |
||
| 618 | } |
||
| 619 | |||
| 620 | static void map_val_20_to_34(INTFLOAT par[PS_MAX_NR_IIDICC]) |
||
| 621 | { |
||
| 622 | par[33] = par[19]; |
||
| 623 | par[32] = par[19]; |
||
| 624 | par[31] = par[18]; |
||
| 625 | par[30] = par[18]; |
||
| 626 | par[29] = par[18]; |
||
| 627 | par[28] = par[18]; |
||
| 628 | par[27] = par[17]; |
||
| 629 | par[26] = par[17]; |
||
| 630 | par[25] = par[16]; |
||
| 631 | par[24] = par[16]; |
||
| 632 | par[23] = par[15]; |
||
| 633 | par[22] = par[15]; |
||
| 634 | par[21] = par[14]; |
||
| 635 | par[20] = par[14]; |
||
| 636 | par[19] = par[13]; |
||
| 637 | par[18] = par[12]; |
||
| 638 | par[17] = par[11]; |
||
| 639 | par[16] = par[10]; |
||
| 640 | par[15] = par[ 9]; |
||
| 641 | par[14] = par[ 9]; |
||
| 642 | par[13] = par[ 8]; |
||
| 643 | par[12] = par[ 8]; |
||
| 644 | par[11] = par[ 7]; |
||
| 645 | par[10] = par[ 6]; |
||
| 646 | par[ 9] = par[ 5]; |
||
| 647 | par[ 8] = par[ 5]; |
||
| 648 | par[ 7] = par[ 4]; |
||
| 649 | par[ 6] = par[ 4]; |
||
| 650 | par[ 5] = par[ 3]; |
||
| 651 | par[ 4] = AAC_HALF_SUM(par[ 2], par[ 3]); |
||
| 652 | par[ 3] = par[ 2]; |
||
| 653 | par[ 2] = par[ 1]; |
||
| 654 | par[ 1] = AAC_HALF_SUM(par[ 0], par[ 1]); |
||
| 655 | } |
||
| 656 | |||
| 657 | static void decorrelation(PSContext *ps, INTFLOAT (*out)[32][2], const INTFLOAT (*s)[32][2], int is34) |
||
| 658 | { |
||
| 659 | LOCAL_ALIGNED_16(INTFLOAT, power, [34], [PS_QMF_TIME_SLOTS]); |
||
| 660 | LOCAL_ALIGNED_16(INTFLOAT, transient_gain, [34], [PS_QMF_TIME_SLOTS]); |
||
| 661 | INTFLOAT *peak_decay_nrg = ps->peak_decay_nrg; |
||
| 662 | INTFLOAT *power_smooth = ps->power_smooth; |
||
| 663 | INTFLOAT *peak_decay_diff_smooth = ps->peak_decay_diff_smooth; |
||
| 664 | INTFLOAT (*delay)[PS_QMF_TIME_SLOTS + PS_MAX_DELAY][2] = ps->delay; |
||
| 665 | INTFLOAT (*ap_delay)[PS_AP_LINKS][PS_QMF_TIME_SLOTS + PS_MAX_AP_DELAY][2] = ps->ap_delay; |
||
| 666 | #if !USE_FIXED |
||
| 667 | const float transient_impact = 1.5f; |
||
| 668 | const float a_smooth = 0.25f; ///< Smoothing coefficient |
||
| 669 | #endif /* USE_FIXED */ |
||
| 670 | const int8_t *k_to_i = is34 ? k_to_i_34 : k_to_i_20; |
||
| 671 | int i, k, m, n; |
||
| 672 | int n0 = 0, nL = 32; |
||
| 673 | const INTFLOAT peak_decay_factor = Q31(0.76592833836465f); |
||
| 674 | |||
| 675 | memset(power, 0, 34 * sizeof(*power)); |
||
| 676 | |||
| 677 | if (is34 != ps->is34bands_old) { |
||
| 678 | memset(ps->peak_decay_nrg, 0, sizeof(ps->peak_decay_nrg)); |
||
| 679 | memset(ps->power_smooth, 0, sizeof(ps->power_smooth)); |
||
| 680 | memset(ps->peak_decay_diff_smooth, 0, sizeof(ps->peak_decay_diff_smooth)); |
||
| 681 | memset(ps->delay, 0, sizeof(ps->delay)); |
||
| 682 | memset(ps->ap_delay, 0, sizeof(ps->ap_delay)); |
||
| 683 | } |
||
| 684 | |||
| 685 | for (k = 0; k < NR_BANDS[is34]; k++) { |
||
| 686 | int i = k_to_i[k]; |
||
| 687 | ps->dsp.add_squares(power[i], s[k], nL - n0); |
||
| 688 | } |
||
| 689 | |||
| 690 | //Transient detection |
||
| 691 | #if USE_FIXED |
||
| 692 | for (i = 0; i < NR_PAR_BANDS[is34]; i++) { |
||
| 693 | for (n = n0; n < nL; n++) { |
||
| 694 | int decayed_peak; |
||
| 695 | int denom; |
||
| 696 | |||
| 697 | decayed_peak = (int)(((int64_t)peak_decay_factor * \ |
||
| 698 | peak_decay_nrg[i] + 0x40000000) >> 31); |
||
| 699 | peak_decay_nrg[i] = FFMAX(decayed_peak, power[i][n]); |
||
| 700 | power_smooth[i] += (power[i][n] - power_smooth[i] + 2) >> 2; |
||
| 701 | peak_decay_diff_smooth[i] += (peak_decay_nrg[i] - power[i][n] - \ |
||
| 702 | peak_decay_diff_smooth[i] + 2) >> 2; |
||
| 703 | denom = peak_decay_diff_smooth[i] + (peak_decay_diff_smooth[i] >> 1); |
||
| 704 | if (denom > power_smooth[i]) { |
||
| 705 | int p = power_smooth[i]; |
||
| 706 | while (denom < 0x40000000) { |
||
| 707 | denom <<= 1; |
||
| 708 | p <<= 1; |
||
| 709 | } |
||
| 710 | transient_gain[i][n] = p / (denom >> 16); |
||
| 711 | } |
||
| 712 | else { |
||
| 713 | transient_gain[i][n] = 1 << 16; |
||
| 714 | } |
||
| 715 | } |
||
| 716 | } |
||
| 717 | #else |
||
| 718 | for (i = 0; i < NR_PAR_BANDS[is34]; i++) { |
||
| 719 | for (n = n0; n < nL; n++) { |
||
| 720 | float decayed_peak = peak_decay_factor * peak_decay_nrg[i]; |
||
| 721 | float denom; |
||
| 722 | peak_decay_nrg[i] = FFMAX(decayed_peak, power[i][n]); |
||
| 723 | power_smooth[i] += a_smooth * (power[i][n] - power_smooth[i]); |
||
| 724 | peak_decay_diff_smooth[i] += a_smooth * (peak_decay_nrg[i] - power[i][n] - peak_decay_diff_smooth[i]); |
||
| 725 | denom = transient_impact * peak_decay_diff_smooth[i]; |
||
| 726 | transient_gain[i][n] = (denom > power_smooth[i]) ? |
||
| 727 | power_smooth[i] / denom : 1.0f; |
||
| 728 | } |
||
| 729 | } |
||
| 730 | |||
| 731 | #endif /* USE_FIXED */ |
||
| 732 | //Decorrelation and transient reduction |
||
| 733 | // PS_AP_LINKS - 1 |
||
| 734 | // ----- |
||
| 735 | // | | Q_fract_allpass[k][m]*z^-link_delay[m] - a[m]*g_decay_slope[k] |
||
| 736 | //H[k][z] = z^-2 * phi_fract[k] * | | ---------------------------------------------------------------- |
||
| 737 | // | | 1 - a[m]*g_decay_slope[k]*Q_fract_allpass[k][m]*z^-link_delay[m] |
||
| 738 | // m = 0 |
||
| 739 | //d[k][z] (out) = transient_gain_mapped[k][z] * H[k][z] * s[k][z] |
||
| 740 | for (k = 0; k < NR_ALLPASS_BANDS[is34]; k++) { |
||
| 741 | int b = k_to_i[k]; |
||
| 742 | #if USE_FIXED |
||
| 743 | int g_decay_slope; |
||
| 744 | |||
| 745 | if (k - DECAY_CUTOFF[is34] <= 0) { |
||
| 746 | g_decay_slope = 1 << 30; |
||
| 747 | } |
||
| 748 | else if (k - DECAY_CUTOFF[is34] >= 20) { |
||
| 749 | g_decay_slope = 0; |
||
| 750 | } |
||
| 751 | else { |
||
| 752 | g_decay_slope = (1 << 30) - DECAY_SLOPE * (k - DECAY_CUTOFF[is34]); |
||
| 753 | } |
||
| 754 | #else |
||
| 755 | float g_decay_slope = 1.f - DECAY_SLOPE * (k - DECAY_CUTOFF[is34]); |
||
| 756 | g_decay_slope = av_clipf(g_decay_slope, 0.f, 1.f); |
||
| 757 | #endif /* USE_FIXED */ |
||
| 758 | memcpy(delay[k], delay[k]+nL, PS_MAX_DELAY*sizeof(delay[k][0])); |
||
| 759 | memcpy(delay[k]+PS_MAX_DELAY, s[k], numQMFSlots*sizeof(delay[k][0])); |
||
| 760 | for (m = 0; m < PS_AP_LINKS; m++) { |
||
| 761 | memcpy(ap_delay[k][m], ap_delay[k][m]+numQMFSlots, 5*sizeof(ap_delay[k][m][0])); |
||
| 762 | } |
||
| 763 | ps->dsp.decorrelate(out[k], delay[k] + PS_MAX_DELAY - 2, ap_delay[k], |
||
| 764 | phi_fract[is34][k], |
||
| 765 | (const INTFLOAT (*)[2]) Q_fract_allpass[is34][k], |
||
| 766 | transient_gain[b], g_decay_slope, nL - n0); |
||
| 767 | } |
||
| 768 | for (; k < SHORT_DELAY_BAND[is34]; k++) { |
||
| 769 | int i = k_to_i[k]; |
||
| 770 | memcpy(delay[k], delay[k]+nL, PS_MAX_DELAY*sizeof(delay[k][0])); |
||
| 771 | memcpy(delay[k]+PS_MAX_DELAY, s[k], numQMFSlots*sizeof(delay[k][0])); |
||
| 772 | //H = delay 14 |
||
| 773 | ps->dsp.mul_pair_single(out[k], delay[k] + PS_MAX_DELAY - 14, |
||
| 774 | transient_gain[i], nL - n0); |
||
| 775 | } |
||
| 776 | for (; k < NR_BANDS[is34]; k++) { |
||
| 777 | int i = k_to_i[k]; |
||
| 778 | memcpy(delay[k], delay[k]+nL, PS_MAX_DELAY*sizeof(delay[k][0])); |
||
| 779 | memcpy(delay[k]+PS_MAX_DELAY, s[k], numQMFSlots*sizeof(delay[k][0])); |
||
| 780 | //H = delay 1 |
||
| 781 | ps->dsp.mul_pair_single(out[k], delay[k] + PS_MAX_DELAY - 1, |
||
| 782 | transient_gain[i], nL - n0); |
||
| 783 | } |
||
| 784 | } |
||
| 785 | |||
| 786 | static void remap34(int8_t (**p_par_mapped)[PS_MAX_NR_IIDICC], |
||
| 787 | int8_t (*par)[PS_MAX_NR_IIDICC], |
||
| 788 | int num_par, int num_env, int full) |
||
| 789 | { |
||
| 790 | int8_t (*par_mapped)[PS_MAX_NR_IIDICC] = *p_par_mapped; |
||
| 791 | int e; |
||
| 792 | if (num_par == 20 || num_par == 11) { |
||
| 793 | for (e = 0; e < num_env; e++) { |
||
| 794 | map_idx_20_to_34(par_mapped[e], par[e], full); |
||
| 795 | } |
||
| 796 | } else if (num_par == 10 || num_par == 5) { |
||
| 797 | for (e = 0; e < num_env; e++) { |
||
| 798 | map_idx_10_to_34(par_mapped[e], par[e], full); |
||
| 799 | } |
||
| 800 | } else { |
||
| 801 | *p_par_mapped = par; |
||
| 802 | } |
||
| 803 | } |
||
| 804 | |||
| 805 | static void remap20(int8_t (**p_par_mapped)[PS_MAX_NR_IIDICC], |
||
| 806 | int8_t (*par)[PS_MAX_NR_IIDICC], |
||
| 807 | int num_par, int num_env, int full) |
||
| 808 | { |
||
| 809 | int8_t (*par_mapped)[PS_MAX_NR_IIDICC] = *p_par_mapped; |
||
| 810 | int e; |
||
| 811 | if (num_par == 34 || num_par == 17) { |
||
| 812 | for (e = 0; e < num_env; e++) { |
||
| 813 | map_idx_34_to_20(par_mapped[e], par[e], full); |
||
| 814 | } |
||
| 815 | } else if (num_par == 10 || num_par == 5) { |
||
| 816 | for (e = 0; e < num_env; e++) { |
||
| 817 | map_idx_10_to_20(par_mapped[e], par[e], full); |
||
| 818 | } |
||
| 819 | } else { |
||
| 820 | *p_par_mapped = par; |
||
| 821 | } |
||
| 822 | } |
||
| 823 | |||
| 824 | static void stereo_processing(PSContext *ps, INTFLOAT (*l)[32][2], INTFLOAT (*r)[32][2], int is34) |
||
| 825 | { |
||
| 826 | int e, b, k; |
||
| 827 | |||
| 828 | INTFLOAT (*H11)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H11; |
||
| 829 | INTFLOAT (*H12)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H12; |
||
| 830 | INTFLOAT (*H21)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H21; |
||
| 831 | INTFLOAT (*H22)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H22; |
||
| 832 | int8_t *opd_hist = ps->opd_hist; |
||
| 833 | int8_t *ipd_hist = ps->ipd_hist; |
||
| 834 | int8_t iid_mapped_buf[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; |
||
| 835 | int8_t icc_mapped_buf[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; |
||
| 836 | int8_t ipd_mapped_buf[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; |
||
| 837 | int8_t opd_mapped_buf[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; |
||
| 838 | int8_t (*iid_mapped)[PS_MAX_NR_IIDICC] = iid_mapped_buf; |
||
| 839 | int8_t (*icc_mapped)[PS_MAX_NR_IIDICC] = icc_mapped_buf; |
||
| 840 | int8_t (*ipd_mapped)[PS_MAX_NR_IIDICC] = ipd_mapped_buf; |
||
| 841 | int8_t (*opd_mapped)[PS_MAX_NR_IIDICC] = opd_mapped_buf; |
||
| 842 | const int8_t *k_to_i = is34 ? k_to_i_34 : k_to_i_20; |
||
| 843 | TABLE_CONST INTFLOAT (*H_LUT)[8][4] = (PS_BASELINE || ps->icc_mode < 3) ? HA : HB; |
||
| 844 | |||
| 845 | //Remapping |
||
| 846 | if (ps->num_env_old) { |
||
| 847 | memcpy(H11[0][0], H11[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H11[0][0][0])); |
||
| 848 | memcpy(H11[1][0], H11[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H11[1][0][0])); |
||
| 849 | memcpy(H12[0][0], H12[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H12[0][0][0])); |
||
| 850 | memcpy(H12[1][0], H12[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H12[1][0][0])); |
||
| 851 | memcpy(H21[0][0], H21[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H21[0][0][0])); |
||
| 852 | memcpy(H21[1][0], H21[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H21[1][0][0])); |
||
| 853 | memcpy(H22[0][0], H22[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H22[0][0][0])); |
||
| 854 | memcpy(H22[1][0], H22[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H22[1][0][0])); |
||
| 855 | } |
||
| 856 | |||
| 857 | if (is34) { |
||
| 858 | remap34(&iid_mapped, ps->iid_par, ps->nr_iid_par, ps->num_env, 1); |
||
| 859 | remap34(&icc_mapped, ps->icc_par, ps->nr_icc_par, ps->num_env, 1); |
||
| 860 | if (ps->enable_ipdopd) { |
||
| 861 | remap34(&ipd_mapped, ps->ipd_par, ps->nr_ipdopd_par, ps->num_env, 0); |
||
| 862 | remap34(&opd_mapped, ps->opd_par, ps->nr_ipdopd_par, ps->num_env, 0); |
||
| 863 | } |
||
| 864 | if (!ps->is34bands_old) { |
||
| 865 | map_val_20_to_34(H11[0][0]); |
||
| 866 | map_val_20_to_34(H11[1][0]); |
||
| 867 | map_val_20_to_34(H12[0][0]); |
||
| 868 | map_val_20_to_34(H12[1][0]); |
||
| 869 | map_val_20_to_34(H21[0][0]); |
||
| 870 | map_val_20_to_34(H21[1][0]); |
||
| 871 | map_val_20_to_34(H22[0][0]); |
||
| 872 | map_val_20_to_34(H22[1][0]); |
||
| 873 | ipdopd_reset(ipd_hist, opd_hist); |
||
| 874 | } |
||
| 875 | } else { |
||
| 876 | remap20(&iid_mapped, ps->iid_par, ps->nr_iid_par, ps->num_env, 1); |
||
| 877 | remap20(&icc_mapped, ps->icc_par, ps->nr_icc_par, ps->num_env, 1); |
||
| 878 | if (ps->enable_ipdopd) { |
||
| 879 | remap20(&ipd_mapped, ps->ipd_par, ps->nr_ipdopd_par, ps->num_env, 0); |
||
| 880 | remap20(&opd_mapped, ps->opd_par, ps->nr_ipdopd_par, ps->num_env, 0); |
||
| 881 | } |
||
| 882 | if (ps->is34bands_old) { |
||
| 883 | map_val_34_to_20(H11[0][0]); |
||
| 884 | map_val_34_to_20(H11[1][0]); |
||
| 885 | map_val_34_to_20(H12[0][0]); |
||
| 886 | map_val_34_to_20(H12[1][0]); |
||
| 887 | map_val_34_to_20(H21[0][0]); |
||
| 888 | map_val_34_to_20(H21[1][0]); |
||
| 889 | map_val_34_to_20(H22[0][0]); |
||
| 890 | map_val_34_to_20(H22[1][0]); |
||
| 891 | ipdopd_reset(ipd_hist, opd_hist); |
||
| 892 | } |
||
| 893 | } |
||
| 894 | |||
| 895 | //Mixing |
||
| 896 | for (e = 0; e < ps->num_env; e++) { |
||
| 897 | for (b = 0; b < NR_PAR_BANDS[is34]; b++) { |
||
| 898 | INTFLOAT h11, h12, h21, h22; |
||
| 899 | h11 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][0]; |
||
| 900 | h12 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][1]; |
||
| 901 | h21 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][2]; |
||
| 902 | h22 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][3]; |
||
| 903 | |||
| 904 | if (!PS_BASELINE && ps->enable_ipdopd && b < NR_IPDOPD_BANDS[is34]) { |
||
| 905 | //The spec say says to only run this smoother when enable_ipdopd |
||
| 906 | //is set but the reference decoder appears to run it constantly |
||
| 907 | INTFLOAT h11i, h12i, h21i, h22i; |
||
| 908 | INTFLOAT ipd_adj_re, ipd_adj_im; |
||
| 909 | int opd_idx = opd_hist[b] * 8 + opd_mapped[e][b]; |
||
| 910 | int ipd_idx = ipd_hist[b] * 8 + ipd_mapped[e][b]; |
||
| 911 | INTFLOAT opd_re = pd_re_smooth[opd_idx]; |
||
| 912 | INTFLOAT opd_im = pd_im_smooth[opd_idx]; |
||
| 913 | INTFLOAT ipd_re = pd_re_smooth[ipd_idx]; |
||
| 914 | INTFLOAT ipd_im = pd_im_smooth[ipd_idx]; |
||
| 915 | opd_hist[b] = opd_idx & 0x3F; |
||
| 916 | ipd_hist[b] = ipd_idx & 0x3F; |
||
| 917 | |||
| 918 | ipd_adj_re = AAC_MADD30(opd_re, ipd_re, opd_im, ipd_im); |
||
| 919 | ipd_adj_im = AAC_MSUB30(opd_im, ipd_re, opd_re, ipd_im); |
||
| 920 | h11i = AAC_MUL30(h11, opd_im); |
||
| 921 | h11 = AAC_MUL30(h11, opd_re); |
||
| 922 | h12i = AAC_MUL30(h12, ipd_adj_im); |
||
| 923 | h12 = AAC_MUL30(h12, ipd_adj_re); |
||
| 924 | h21i = AAC_MUL30(h21, opd_im); |
||
| 925 | h21 = AAC_MUL30(h21, opd_re); |
||
| 926 | h22i = AAC_MUL30(h22, ipd_adj_im); |
||
| 927 | h22 = AAC_MUL30(h22, ipd_adj_re); |
||
| 928 | H11[1][e+1][b] = h11i; |
||
| 929 | H12[1][e+1][b] = h12i; |
||
| 930 | H21[1][e+1][b] = h21i; |
||
| 931 | H22[1][e+1][b] = h22i; |
||
| 932 | } |
||
| 933 | H11[0][e+1][b] = h11; |
||
| 934 | H12[0][e+1][b] = h12; |
||
| 935 | H21[0][e+1][b] = h21; |
||
| 936 | H22[0][e+1][b] = h22; |
||
| 937 | } |
||
| 938 | for (k = 0; k < NR_BANDS[is34]; k++) { |
||
| 939 | LOCAL_ALIGNED_16(INTFLOAT, h, [2], [4]); |
||
| 940 | LOCAL_ALIGNED_16(INTFLOAT, h_step, [2], [4]); |
||
| 941 | int start = ps->border_position[e]; |
||
| 942 | int stop = ps->border_position[e+1]; |
||
| 943 | INTFLOAT width = Q30(1.f) / ((stop - start) ? (stop - start) : 1); |
||
| 944 | #if USE_FIXED |
||
| 945 | width <<= 1; |
||
| 946 | #endif |
||
| 947 | b = k_to_i[k]; |
||
| 948 | h[0][0] = H11[0][e][b]; |
||
| 949 | h[0][1] = H12[0][e][b]; |
||
| 950 | h[0][2] = H21[0][e][b]; |
||
| 951 | h[0][3] = H22[0][e][b]; |
||
| 952 | if (!PS_BASELINE && ps->enable_ipdopd) { |
||
| 953 | //Is this necessary? ps_04_new seems unchanged |
||
| 954 | if ((is34 && k <= 13 && k >= 9) || (!is34 && k <= 1)) { |
||
| 955 | h[1][0] = -H11[1][e][b]; |
||
| 956 | h[1][1] = -H12[1][e][b]; |
||
| 957 | h[1][2] = -H21[1][e][b]; |
||
| 958 | h[1][3] = -H22[1][e][b]; |
||
| 959 | } else { |
||
| 960 | h[1][0] = H11[1][e][b]; |
||
| 961 | h[1][1] = H12[1][e][b]; |
||
| 962 | h[1][2] = H21[1][e][b]; |
||
| 963 | h[1][3] = H22[1][e][b]; |
||
| 964 | } |
||
| 965 | } |
||
| 966 | //Interpolation |
||
| 967 | h_step[0][0] = AAC_MSUB31_V3(H11[0][e+1][b], h[0][0], width); |
||
| 968 | h_step[0][1] = AAC_MSUB31_V3(H12[0][e+1][b], h[0][1], width); |
||
| 969 | h_step[0][2] = AAC_MSUB31_V3(H21[0][e+1][b], h[0][2], width); |
||
| 970 | h_step[0][3] = AAC_MSUB31_V3(H22[0][e+1][b], h[0][3], width); |
||
| 971 | if (!PS_BASELINE && ps->enable_ipdopd) { |
||
| 972 | h_step[1][0] = AAC_MSUB31_V3(H11[1][e+1][b], h[1][0], width); |
||
| 973 | h_step[1][1] = AAC_MSUB31_V3(H12[1][e+1][b], h[1][1], width); |
||
| 974 | h_step[1][2] = AAC_MSUB31_V3(H21[1][e+1][b], h[1][2], width); |
||
| 975 | h_step[1][3] = AAC_MSUB31_V3(H22[1][e+1][b], h[1][3], width); |
||
| 976 | } |
||
| 977 | ps->dsp.stereo_interpolate[!PS_BASELINE && ps->enable_ipdopd]( |
||
| 978 | l[k] + start + 1, r[k] + start + 1, |
||
| 979 | h, h_step, stop - start); |
||
| 980 | } |
||
| 981 | } |
||
| 982 | } |
||
| 983 | |||
| 984 | int AAC_RENAME(ff_ps_apply)(AVCodecContext *avctx, PSContext *ps, INTFLOAT L[2][38][64], INTFLOAT R[2][38][64], int top) |
||
| 985 | { |
||
| 986 | INTFLOAT (*Lbuf)[32][2] = ps->Lbuf; |
||
| 987 | INTFLOAT (*Rbuf)[32][2] = ps->Rbuf; |
||
| 988 | const int len = 32; |
||
| 989 | int is34 = ps->is34bands; |
||
| 990 | |||
| 991 | top += NR_BANDS[is34] - 64; |
||
| 992 | memset(ps->delay+top, 0, (NR_BANDS[is34] - top)*sizeof(ps->delay[0])); |
||
| 993 | if (top < NR_ALLPASS_BANDS[is34]) |
||
| 994 | memset(ps->ap_delay + top, 0, (NR_ALLPASS_BANDS[is34] - top)*sizeof(ps->ap_delay[0])); |
||
| 995 | |||
| 996 | hybrid_analysis(&ps->dsp, Lbuf, ps->in_buf, L, is34, len); |
||
| 997 | decorrelation(ps, Rbuf, (const INTFLOAT (*)[32][2]) Lbuf, is34); |
||
| 998 | stereo_processing(ps, Lbuf, Rbuf, is34); |
||
| 999 | hybrid_synthesis(&ps->dsp, L, Lbuf, is34, len); |
||
| 1000 | hybrid_synthesis(&ps->dsp, R, Rbuf, is34, len); |
||
| 1001 | |||
| 1002 | return 0; |
||
| 1003 | } |
||
| 1004 | |||
| 1005 | #define PS_INIT_VLC_STATIC(num, size) \ |
||
| 1006 | INIT_VLC_STATIC(&vlc_ps[num], 9, ps_tmp[num].table_size / ps_tmp[num].elem_size, \ |
||
| 1007 | ps_tmp[num].ps_bits, 1, 1, \ |
||
| 1008 | ps_tmp[num].ps_codes, ps_tmp[num].elem_size, ps_tmp[num].elem_size, \ |
||
| 1009 | size); |
||
| 1010 | |||
| 1011 | #define PS_VLC_ROW(name) \ |
||
| 1012 | { name ## _codes, name ## _bits, sizeof(name ## _codes), sizeof(name ## _codes[0]) } |
||
| 1013 | |||
| 1014 | av_cold void AAC_RENAME(ff_ps_init)(void) { |
||
| 1015 | // Syntax initialization |
||
| 1016 | static const struct { |
||
| 1017 | const void *ps_codes, *ps_bits; |
||
| 1018 | const unsigned int table_size, elem_size; |
||
| 1019 | } ps_tmp[] = { |
||
| 1020 | PS_VLC_ROW(huff_iid_df1), |
||
| 1021 | PS_VLC_ROW(huff_iid_dt1), |
||
| 1022 | PS_VLC_ROW(huff_iid_df0), |
||
| 1023 | PS_VLC_ROW(huff_iid_dt0), |
||
| 1024 | PS_VLC_ROW(huff_icc_df), |
||
| 1025 | PS_VLC_ROW(huff_icc_dt), |
||
| 1026 | PS_VLC_ROW(huff_ipd_df), |
||
| 1027 | PS_VLC_ROW(huff_ipd_dt), |
||
| 1028 | PS_VLC_ROW(huff_opd_df), |
||
| 1029 | PS_VLC_ROW(huff_opd_dt), |
||
| 1030 | }; |
||
| 1031 | |||
| 1032 | PS_INIT_VLC_STATIC(0, 1544); |
||
| 1033 | PS_INIT_VLC_STATIC(1, 832); |
||
| 1034 | PS_INIT_VLC_STATIC(2, 1024); |
||
| 1035 | PS_INIT_VLC_STATIC(3, 1036); |
||
| 1036 | PS_INIT_VLC_STATIC(4, 544); |
||
| 1037 | PS_INIT_VLC_STATIC(5, 544); |
||
| 1038 | PS_INIT_VLC_STATIC(6, 512); |
||
| 1039 | PS_INIT_VLC_STATIC(7, 512); |
||
| 1040 | PS_INIT_VLC_STATIC(8, 512); |
||
| 1041 | PS_INIT_VLC_STATIC(9, 512); |
||
| 1042 | |||
| 1043 | ps_tableinit(); |
||
| 1044 | } |
||
| 1045 | |||
| 1046 | av_cold void AAC_RENAME(ff_ps_ctx_init)(PSContext *ps) |
||
| 1047 | { |
||
| 1048 | AAC_RENAME(ff_psdsp_init)(&ps->dsp); |
||
| 1049 | } |