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/*
* Copyright 2003-2017 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_ENCODER_HXX
#define MPD_OGG_ENCODER_HXX
#include "config.h"
#include "../EncoderAPI.hxx"
#include "lib/xiph/OggStreamState.hxx"
#include "lib/xiph/OggPage.hxx"
#include "lib/xiph/OggSerial.hxx"
#include <ogg/ogg.h>
/**
* An abstract base class which contains code common to all encoders
* with Ogg container output.
*/
class OggEncoder : public Encoder {
/* initialize "flush" to true, so the caller gets the full
headers on the first read */
bool flush = true;
protected:
OggStreamState stream;
public:
OggEncoder(bool _implements_tag)
:Encoder(_implements_tag),
stream(GenerateOggSerial()) {
}
/* virtual methods from class Encoder */
void Flush() final {
flush = true;
}
size_t Read(void *dest, size_t length) override {
ogg_page page;
bool success = stream.PageOut(page);
if (!success) {
if (flush) {
flush = false;
success = stream.Flush(page);
}
if (!success)
return 0;
}
return ReadPage(page, dest, length);
}
};
#endif
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