mirror of
https://github.com/mpv-player/mpv
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3474d7e1b5
Fix mp_check_mp3_header: it checked for a byte-swapped MP3-header on little-endian, and on big-endian it would only accept a MP3-header that would be valid when read in both directions. The latter was the reason for bug 905, causing the PS demuxer to claim files far too agressively (the MP3 check avoiding misdetection as DV is not exactly a sane approach, but it mostly works). git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@32692 b3059339-0415-0410-9bf9-f77b7e298cf2
37 lines
1.3 KiB
C
37 lines
1.3 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPLAYER_MP3_HDR_H
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#define MPLAYER_MP3_HDR_H
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#include <stddef.h>
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int mp_get_mp3_header(unsigned char* hbuf,int* chans, int* freq, int* spf, int* mpa_layer, int* br);
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#define mp_decode_mp3_header(hbuf) mp_get_mp3_header(hbuf,NULL,NULL,NULL,NULL,NULL)
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static inline int mp_check_mp3_header(unsigned int head){
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unsigned char tmp[4] = {head >> 24, head >> 16, head >> 8, head};
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if( (head & 0xffe00000) != 0xffe00000 ||
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(head & 0x00000c00) == 0x00000c00) return 0;
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if(mp_decode_mp3_header(tmp)<=0) return 0;
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return 1;
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}
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#endif /* MPLAYER_MP3_HDR_H */
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