path: root/src/decoder_internal.h

/* the Music Player Daemon (MPD)
 * Copyright (C) 2008 Max Kellermann <max@duempel.org>
 * This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef MPD_DECODER_INTERNAL_H
#define MPD_DECODER_INTERNAL_H

#include "decoder_command.h"
#include "pcm_convert.h"

struct input_stream;

struct decoder {
	struct pcm_convert_state conv_state;

	bool seeking;

	/** the last tag received from the stream */
	struct tag *stream_tag;

	/** the last tag received from the decoder plugin */
	struct tag *decoder_tag;

	/** the chunk currently being written to */
	struct music_chunk *chunk;
};

/**
 * Returns the current chunk the decoder writes to, or allocates a new
 * chunk if there is none.
 */
struct music_chunk *
decoder_get_chunk(struct decoder *decoder);

/**
 * Flushes a chunk.  Waits for room in the music pipe if required.
 *
 * @return DECODE_COMMAND_NONE on success, any other command if we
 * have received a decoder command while waiting
 */
enum decoder_command
decoder_flush_chunk(struct decoder *decoder, struct input_stream *is);

#endif