diff options
Diffstat (limited to 'libavcodec/aactab.h')
| -rw-r--r-- | libavcodec/aactab.h | 48 |
1 files changed, 44 insertions, 4 deletions
diff --git a/libavcodec/aactab.h b/libavcodec/aactab.h index fc26db8a4d..9f333801e9 100644 --- a/libavcodec/aactab.h +++ b/libavcodec/aactab.h @@ -3,20 +3,20 @@ * 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 Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg 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. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -41,13 +41,53 @@ * encoder. */ +/* @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 INTFLOAT tns_tmp2_map_1_3[4] = { + Q31(0.00000000f), Q31(-0.43388373f), Q31(0.64278758f), Q31(0.34202015f), +}; + +static const INTFLOAT tns_tmp2_map_0_3[8] = { + Q31(0.00000000f), Q31(-0.43388373f), Q31(-0.78183150f), Q31(-0.97492790f), + Q31(0.98480773f), Q31( 0.86602539f), Q31( 0.64278758f), Q31( 0.34202015f), +}; + +static const INTFLOAT tns_tmp2_map_1_4[8] = { + Q31(0.00000000f), Q31(-0.20791170f), Q31(-0.40673664f), Q31(-0.58778524f), + Q31(0.67369562f), Q31( 0.52643216f), Q31( 0.36124167f), Q31( 0.18374951f), +}; + +static const INTFLOAT tns_tmp2_map_0_4[16] = { + Q31( 0.00000000f), Q31(-0.20791170f), Q31(-0.40673664f), Q31(-0.58778524f), + Q31(-0.74314481f), Q31(-0.86602539f), Q31(-0.95105654f), Q31(-0.99452192f), + Q31( 0.99573416f), Q31( 0.96182561f), Q31( 0.89516330f), Q31( 0.79801720f), + Q31( 0.67369562f), Q31( 0.52643216f), Q31( 0.36124167f), Q31( 0.18374951f), +}; + +static const INTFLOAT * 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 +}; +// @} + /* @name window coefficients * @{ */ DECLARE_ALIGNED(32, extern float, ff_aac_kbd_long_1024)[1024]; DECLARE_ALIGNED(32, extern float, ff_aac_kbd_short_128)[128]; +DECLARE_ALIGNED(32, extern int, ff_aac_kbd_long_1024_fixed)[1024]; +DECLARE_ALIGNED(32, extern int, ff_aac_kbd_long_512_fixed)[512]; +DECLARE_ALIGNED(32, extern int, ff_aac_kbd_short_128_fixed)[128]; const DECLARE_ALIGNED(32, extern float, ff_aac_eld_window_512)[1920]; +const DECLARE_ALIGNED(32, extern int, ff_aac_eld_window_512_fixed)[1920]; const DECLARE_ALIGNED(32, extern float, ff_aac_eld_window_480)[1800]; +const DECLARE_ALIGNED(32, extern int, ff_aac_eld_window_480_fixed)[1800]; // @} /* @name number of scalefactor window bands for long and short transform windows respectively |