/*
* Copyright (C) 2003-2010 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.
*/
/*
* Common data structures and functions used by FLAC and OggFLAC
*/
#ifndef MPD_FLAC_COMMON_H
#define MPD_FLAC_COMMON_H
#include "decoder_api.h"
#include "pcm_buffer.h"
#include <glib.h>
#include <FLAC/stream_decoder.h>
#include <FLAC/metadata.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "flac"
struct flac_data {
struct pcm_buffer buffer;
enum sample_format sample_format;
/**
* The size of one frame in the output buffer.
*/
unsigned frame_size;
/**
* Is the #stream_info member valid?
*/
bool have_stream_info;
/**
* A copy of the stream info object passed to the metadata
* callback. Once we drop support for libFLAC 1.1.2, we can
* remove this attribute, and use
* FLAC__stream_decoder_get_total_samples() etc.
*/
FLAC__StreamMetadata_StreamInfo stream_info;
/**
* The number of the first frame in this song. This is only
* non-zero if playing sub songs from a CUE sheet.
*/
FLAC__uint64 first_frame;
/**
* The number of the next frame which is going to be decoded.
*/
FLAC__uint64 next_frame;
FLAC__uint64 position;
struct decoder *decoder;
struct input_stream *input_stream;
struct tag *tag;
};
/* initializes a given FlacData struct */
void
flac_data_init(struct flac_data *data, struct decoder * decoder,
struct input_stream *input_stream);
void
flac_data_deinit(struct flac_data *data);
/**
* Obtains the audio format from the stream_info attribute, and copies
* it to the specified #audio_format object. This also updates the
* frame_size attribute.
*
* @return true on success, false the audio format is not supported
*/
bool
flac_data_get_audio_format(struct flac_data *data,
struct audio_format *audio_format);
void flac_metadata_common_cb(const FLAC__StreamMetadata * block,
struct flac_data *data);
void flac_error_common_cb(const char *plugin,
FLAC__StreamDecoderErrorStatus status,
struct flac_data *data);
FLAC__StreamDecoderWriteStatus
flac_common_write(struct flac_data *data, const FLAC__Frame * frame,
const FLAC__int32 *const buf[],
FLAC__uint64 nbytes);
#endif /* _FLAC_COMMON_H */
