X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Faacdectab.h;h=4c23f2d03daa9f0a97092e64631760eaea4d4ec0;hb=94bb1ce882a12b6d7a1fa32715a68121b39ee838;hp=b7a9787a30d51317893037e8180ee664b6b9dd72;hpb=cc0591dab0a5508518413260c77750577c30b0d6;p=ffmpeg diff --git a/libavcodec/aacdectab.h b/libavcodec/aacdectab.h index b7a9787a30d..4c23f2d03da 100644 --- a/libavcodec/aacdectab.h +++ b/libavcodec/aacdectab.h @@ -3,157 +3,102 @@ * Copyright (c) 2005-2006 Oded Shimon ( ods15 ods15 dyndns org ) * Copyright (c) 2006-2007 Maxim Gavrilov ( maxim.gavrilov gmail com ) * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * FFmpeg is distributed in the hope that it will be useful, + * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** - * @file aacdectab.h + * @file * AAC decoder data * @author Oded Shimon ( ods15 ods15 dyndns org ) * @author Maxim Gavrilov ( maxim.gavrilov gmail com ) */ -#ifndef FFMPEG_AACDECTAB_H -#define FFMPEG_AACDECTAB_H +#ifndef AVCODEC_AACDECTAB_H +#define AVCODEC_AACDECTAB_H +#include "libavutil/channel_layout.h" #include "aac.h" #include -/* @name swb_offsets - * Sample offset into the window indicating the beginning of a scalefactor - * window band - * - * scalefactor window band - term for scalefactor bands within a window, - * given in Table 4.110 to Table 4.128. - * - * scalefactor band - a set of spectral coefficients which are scaled by one - * scalefactor. In case of EIGHT_SHORT_SEQUENCE and grouping a scalefactor band - * may contain several scalefactor window bands of corresponding frequency. For - * all other window_sequences scalefactor bands and scalefactor window bands are - * identical. - * @{ +/* @name ltp_coef + * Table of the LTP coefficients */ - -static const uint16_t swb_offset_1024_96[] = { - 0, 4, 8, 12, 16, 20, 24, 28, - 32, 36, 40, 44, 48, 52, 56, 64, - 72, 80, 88, 96, 108, 120, 132, 144, - 156, 172, 188, 212, 240, 276, 320, 384, - 448, 512, 576, 640, 704, 768, 832, 896, - 960, 1024 -}; - -static const uint16_t swb_offset_128_96[] = { - 0, 4, 8, 12, 16, 20, 24, 32, 40, 48, 64, 92, 128 -}; - -static const uint16_t swb_offset_1024_64[] = { - 0, 4, 8, 12, 16, 20, 24, 28, - 32, 36, 40, 44, 48, 52, 56, 64, - 72, 80, 88, 100, 112, 124, 140, 156, - 172, 192, 216, 240, 268, 304, 344, 384, - 424, 464, 504, 544, 584, 624, 664, 704, - 744, 784, 824, 864, 904, 944, 984, 1024 -}; - -static const uint16_t swb_offset_1024_48[] = { - 0, 4, 8, 12, 16, 20, 24, 28, - 32, 36, 40, 48, 56, 64, 72, 80, - 88, 96, 108, 120, 132, 144, 160, 176, - 196, 216, 240, 264, 292, 320, 352, 384, - 416, 448, 480, 512, 544, 576, 608, 640, - 672, 704, 736, 768, 800, 832, 864, 896, - 928, 1024 +static const float ltp_coef[8] = { + 0.570829, 0.696616, 0.813004, 0.911304, + 0.984900, 1.067894, 1.194601, 1.369533, }; -static const uint16_t swb_offset_128_48[] = { - 0, 4, 8, 12, 16, 20, 28, 36, - 44, 56, 68, 80, 96, 112, 128 -}; - -static const uint16_t swb_offset_1024_32[] = { - 0, 4, 8, 12, 16, 20, 24, 28, - 32, 36, 40, 48, 56, 64, 72, 80, - 88, 96, 108, 120, 132, 144, 160, 176, - 196, 216, 240, 264, 292, 320, 352, 384, - 416, 448, 480, 512, 544, 576, 608, 640, - 672, 704, 736, 768, 800, 832, 864, 896, - 928, 960, 992, 1024 -}; - -static const uint16_t swb_offset_1024_24[] = { - 0, 4, 8, 12, 16, 20, 24, 28, - 32, 36, 40, 44, 52, 60, 68, 76, - 84, 92, 100, 108, 116, 124, 136, 148, - 160, 172, 188, 204, 220, 240, 260, 284, - 308, 336, 364, 396, 432, 468, 508, 552, - 600, 652, 704, 768, 832, 896, 960, 1024 +/* @name tns_tmp2_map + * Tables of the tmp2[] arrays of LPC coefficients used for TNS. + * The suffix _M_N[] indicate the values of coef_compress and coef_res + * respectively. + * @{ + */ +static const float tns_tmp2_map_1_3[4] = { + 0.00000000, -0.43388373, 0.64278758, 0.34202015, }; -static const uint16_t swb_offset_128_24[] = { - 0, 4, 8, 12, 16, 20, 24, 28, - 36, 44, 52, 64, 76, 92, 108, 128 +static const float tns_tmp2_map_0_3[8] = { + 0.00000000, -0.43388373, -0.78183150, -0.97492790, + 0.98480773, 0.86602539, 0.64278758, 0.34202015, }; -static const uint16_t swb_offset_1024_16[] = { - 0, 8, 16, 24, 32, 40, 48, 56, - 64, 72, 80, 88, 100, 112, 124, 136, - 148, 160, 172, 184, 196, 212, 228, 244, - 260, 280, 300, 320, 344, 368, 396, 424, - 456, 492, 532, 572, 616, 664, 716, 772, - 832, 896, 960, 1024 +static const float tns_tmp2_map_1_4[8] = { + 0.00000000, -0.20791170, -0.40673664, -0.58778524, + 0.67369562, 0.52643216, 0.36124167, 0.18374951, }; -static const uint16_t swb_offset_128_16[] = { - 0, 4, 8, 12, 16, 20, 24, 28, - 32, 40, 48, 60, 72, 88, 108, 128 +static const float tns_tmp2_map_0_4[16] = { + 0.00000000, -0.20791170, -0.40673664, -0.58778524, + -0.74314481, -0.86602539, -0.95105654, -0.99452192, + 0.99573416, 0.96182561, 0.89516330, 0.79801720, + 0.67369562, 0.52643216, 0.36124167, 0.18374951, }; -static const uint16_t swb_offset_1024_8[] = { - 0, 12, 24, 36, 48, 60, 72, 84, - 96, 108, 120, 132, 144, 156, 172, 188, - 204, 220, 236, 252, 268, 288, 308, 328, - 348, 372, 396, 420, 448, 476, 508, 544, - 580, 620, 664, 712, 764, 820, 880, 944, - 1024 +static const float * const tns_tmp2_map[4] = { + tns_tmp2_map_0_3, + tns_tmp2_map_0_4, + tns_tmp2_map_1_3, + tns_tmp2_map_1_4 }; +// @} -static const uint16_t swb_offset_128_8[] = { - 0, 4, 8, 12, 16, 20, 24, 28, - 36, 44, 52, 60, 72, 88, 108, 128 -}; +static const int8_t tags_per_config[16] = { 0, 1, 1, 2, 3, 3, 4, 5, 0, 0, 0, 0, 0, 0, 0, 0 }; -static const uint16_t *swb_offset_1024[] = { - swb_offset_1024_96, swb_offset_1024_96, swb_offset_1024_64, - swb_offset_1024_48, swb_offset_1024_48, swb_offset_1024_32, - swb_offset_1024_24, swb_offset_1024_24, swb_offset_1024_16, - swb_offset_1024_16, swb_offset_1024_16, swb_offset_1024_8 +static const uint8_t aac_channel_layout_map[7][5][3] = { + { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, }, + { { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, }, + { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, }, + { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_SCE, 1, AAC_CHANNEL_BACK }, }, + { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 1, AAC_CHANNEL_BACK }, }, + { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 1, AAC_CHANNEL_BACK }, { TYPE_LFE, 0, AAC_CHANNEL_LFE }, }, + { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 1, AAC_CHANNEL_FRONT }, { TYPE_CPE, 2, AAC_CHANNEL_BACK }, { TYPE_LFE, 0, AAC_CHANNEL_LFE }, }, }; -static const uint16_t *swb_offset_128[] = { - /* The last entry on the following row is swb_offset_128_64 but is a - duplicate of swb_offset_128_96. */ - swb_offset_128_96, swb_offset_128_96, swb_offset_128_96, - swb_offset_128_48, swb_offset_128_48, swb_offset_128_48, - swb_offset_128_24, swb_offset_128_24, swb_offset_128_16, - swb_offset_128_16, swb_offset_128_16, swb_offset_128_8 +static const uint64_t aac_channel_layout[8] = { + AV_CH_LAYOUT_MONO, + AV_CH_LAYOUT_STEREO, + AV_CH_LAYOUT_SURROUND, + AV_CH_LAYOUT_4POINT0, + AV_CH_LAYOUT_5POINT0_BACK, + AV_CH_LAYOUT_5POINT1_BACK, + AV_CH_LAYOUT_7POINT1_WIDE_BACK, + 0, }; -// @} - -#endif /* FFMPEG_AACDECTAB_H */ +#endif /* AVCODEC_AACDECTAB_H */