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https://gitee.com/openharmony/third_party_ffmpeg
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48 lines
1.9 KiB
C
48 lines
1.9 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* AAN (Arai, Agui and Nakajima) (I)DCT tables
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*/
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#include <stdint.h>
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const uint16_t ff_aanscales[64] = {
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/* precomputed values scaled up by 14 bits */
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16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520,
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22725, 31521, 29692, 26722, 22725, 17855, 12299, 6270,
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21407, 29692, 27969, 25172, 21407, 16819, 11585, 5906,
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19266, 26722, 25172, 22654, 19266, 15137, 10426, 5315,
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16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520,
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12873, 17855, 16819, 15137, 12873, 10114, 6967, 3552,
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8867 , 12299, 11585, 10426, 8867, 6967, 4799, 2446,
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4520 , 6270, 5906, 5315, 4520, 3552, 2446, 1247
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};
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const uint16_t ff_inv_aanscales[64] = {
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4096, 2953, 3135, 3483, 4096, 5213, 7568, 14846,
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2953, 2129, 2260, 2511, 2953, 3759, 5457, 10703,
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3135, 2260, 2399, 2666, 3135, 3990, 5793, 11363,
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3483, 2511, 2666, 2962, 3483, 4433, 6436, 12625,
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4096, 2953, 3135, 3483, 4096, 5213, 7568, 14846,
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5213, 3759, 3990, 4433, 5213, 6635, 9633, 18895,
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7568, 5457, 5793, 6436, 7568, 9633, 13985, 27432,
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14846, 10703, 11363, 12625, 14846, 18895, 27432, 53809,
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};
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