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https://gitee.com/openharmony/third_party_ffmpeg
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b4027d9749
WMApro actually support 13-bits block sizes (potentially even up to 14), and thus we should support that also. If we get block sizes beyond what the decoder can handle (14 is possible depending on s->decode_flags), error out instead of crashing.
67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
/*
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* 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 Libav.
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*
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* Libav 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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* Libav 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 Libav; 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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#ifndef AVCODEC_SINEWIN_TABLEGEN_H
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#define AVCODEC_SINEWIN_TABLEGEN_H
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#include <assert.h>
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// do not use libavutil/libm.h since this is compiled both
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// for the host and the target and config.h is only valid for the target
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#include <math.h>
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#include "libavutil/attributes.h"
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#if !CONFIG_HARDCODED_TABLES
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SINETABLE( 32);
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SINETABLE( 64);
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SINETABLE( 128);
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SINETABLE( 256);
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SINETABLE( 512);
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SINETABLE(1024);
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SINETABLE(2048);
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SINETABLE(4096);
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SINETABLE(8192);
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#else
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#include "libavcodec/sinewin_tables.h"
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#endif
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SINETABLE_CONST float * const ff_sine_windows[] = {
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NULL, NULL, NULL, NULL, NULL, // unused
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ff_sine_32 , ff_sine_64 ,
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ff_sine_128, ff_sine_256, ff_sine_512, ff_sine_1024, ff_sine_2048, ff_sine_4096, ff_sine_8192
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};
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// Generate a sine window.
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av_cold void ff_sine_window_init(float *window, int n) {
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int i;
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for(i = 0; i < n; i++)
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window[i] = sinf((i + 0.5) * (M_PI / (2.0 * n)));
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}
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av_cold void ff_init_ff_sine_windows(int index) {
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assert(index >= 0 && index < FF_ARRAY_ELEMS(ff_sine_windows));
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#if !CONFIG_HARDCODED_TABLES
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ff_sine_window_init(ff_sine_windows[index], 1 << index);
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#endif
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}
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#endif /* AVCODEC_SINEWIN_TABLEGEN_H */
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