ffmpeg/libavcodec/sinewin_tablegen_template.c
Carl Eugen Hoyos 10f468156c lavc/sinewin: Do not declare AAC 120/960 tables as const.
ff_sine_window_init() is writing to these tables causing
a crash if compiled with gcc 8 and lto.

Analyzed by Martin Liška in:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85132

Fixes ticket #7491.
2018-10-19 20:30:48 +02:00

57 lines
1.6 KiB
C

/*
* Generate a header file for hardcoded sine windows
*
* Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
*
* This file is part of FFmpeg.
*
* 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.
*
* 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdlib.h>
#include "libavcodec/aac_defines.h"
#define CONFIG_HARDCODED_TABLES 0
#if USE_FIXED
#define WRITE_FUNC write_int32_t_array
#else
#define WRITE_FUNC write_float_array
#endif
#define SINETABLE_CONST
#define SINETABLE(size) \
INTFLOAT AAC_RENAME(ff_sine_##size)[size]
#define SINETABLE120960(size) \
INTFLOAT AAC_RENAME(ff_sine_##size)[size]
#define FF_ARRAY_ELEMS(a) (sizeof(a) / sizeof((a)[0]))
#include "sinewin_tablegen.h"
#include "tableprint.h"
int main(void)
{
int i;
write_fileheader();
for (i = 5; i <= 13; i++) {
AAC_RENAME(ff_init_ff_sine_windows)(i);
printf("SINETABLE(%4i) = {\n", 1 << i);
WRITE_FUNC(AAC_RENAME(ff_sine_windows)[i], 1 << i);
printf("};\n");
}
return 0;
}