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/*
* Copyright 2003-2016 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_OGG_DECODER_HXX
#define MPD_OGG_DECODER_HXX
#include "config.h" /* must be first for large file support */
#include "lib/xiph/OggVisitor.hxx"
#include "decoder/Reader.hxx"
class Error;
class OggDecoder : public OggVisitor {
ogg_int64_t end_granulepos;
protected:
Decoder &decoder;
InputStream &input_stream;
public:
explicit OggDecoder(DecoderReader &reader)
:OggVisitor(reader),
decoder(reader.GetDecoder()),
input_stream(reader.GetInputStream()) {}
bool Seek(OggSyncState &oy, uint64_t where_frame);
private:
/**
* Load the end-of-stream packet and restore the previous file
* position.
*/
bool LoadEndPacket(ogg_packet &packet) const;
ogg_int64_t LoadEndGranulePos() const;
protected:
ogg_int64_t UpdateEndGranulePos() {
return end_granulepos = LoadEndGranulePos();
}
bool IsSeekable() const {
return end_granulepos > 0;
}
bool SeekGranulePos(ogg_int64_t where_granulepos, Error &error);
};
#endif
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