2124df1390
The try_decode() method may have read some data from the stream, which is now lost. To make this data available to other methods, get it back by rewinding the input stream after each try_decode() invocation. The ogg and wavpack plugins did this manually and inconsistently; this code can now be removed.
43 lines
1.6 KiB
C
43 lines
1.6 KiB
C
/* the Music Player Daemon (MPD)
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* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
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* This project's homepage is: http://www.musicpd.org
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*
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* Common functions used for Ogg data streams (Ogg-Vorbis and OggFLAC)
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* (c) 2005 by Eric Wong <normalperson@yhbt.net>
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*
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* This program 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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* This program 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "_ogg_common.h"
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#include "../utils.h"
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ogg_stream_type ogg_stream_type_detect(struct input_stream *inStream)
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{
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/* oggflac detection based on code in ogg123 and this post
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* http://lists.xiph.org/pipermail/flac/2004-December/000393.html
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* ogg123 trunk still doesn't have this patch as of June 2005 */
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unsigned char buf[41];
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size_t r;
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r = decoder_read(NULL, inStream, buf, sizeof(buf));
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if (r >= 32 && memcmp(buf, "OggS", 4) == 0 && (
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(memcmp(buf+29, "FLAC", 4) == 0
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&& memcmp(buf+37, "fLaC", 4) == 0)
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|| (memcmp(buf+28, "FLAC", 4) == 0)
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|| (memcmp(buf+28, "fLaC", 4) == 0))) {
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return FLAC;
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}
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return VORBIS;
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}
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