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https://git.ffmpeg.org/ffmpeg.git
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469cd8d7fa
This patch replaces the transform used in AAC with lavu/tx and removes the limitation on only being able to decode 960-sample files with the float decoder. This commit also removes a whole bunch of unnecessary and slow lifting steps the decoder did to compensate for the poor accuracy of the old integer transformation code. Overall float decoder speedup on Zen 3 for 64kbps: 32%
46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/*
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* Generate a header file for hardcoded sine windows
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*
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* Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
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*
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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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#include "tableprint.h"
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#define BUILD_TABLES
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#define CONFIG_HARDCODED_TABLES 0
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#include "sinewin_fixed_tablegen.h"
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int main(void)
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{
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write_fileheader();
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init_sine_windows_fixed();
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#define PRINT_TABLE(size) \
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printf("SINETABLE("#size") = {\n"); \
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write_int32_t_array(sine_ ## size ## _fixed, size); \
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printf("};\n")
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PRINT_TABLE(120);
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PRINT_TABLE(128);
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PRINT_TABLE(480);
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PRINT_TABLE(512);
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PRINT_TABLE(960);
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PRINT_TABLE(1024);
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return 0;
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}
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