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/***************************************************************************
* Copyright (C) 2006-2021 by Ilya Kotov *
* forkotov02@ya.ru *
* *
* 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 DECODER_FLAC_H
#define DECODER_FLAC_H
#include <qmmp/decoder.h>
#include <FLAC/all.h>
#define MAX_SUPPORTED_CHANNELS 2
#define SAMPLES_PER_WRITE 512
#define SAMPLE_BUFFER_SIZE ((FLAC__MAX_BLOCK_SIZE + SAMPLES_PER_WRITE) * MAX_SUPPORTED_CHANNELS * (32/8))
class CueParser;
struct flac_data
{
//FLAC__SeekableStreamDecoder *decoder;
FLAC__StreamDecoder *decoder = nullptr;
int bitrate = 0;
int abort = 0; /* abort playing (due to an error) */
qint64 length = 0;
qint64 total_samples = 0;
FLAC__byte sample_buffer[SAMPLE_BUFFER_SIZE];
unsigned sample_buffer_fill = 0;
/* sound parameters */
unsigned bits_per_sample = 0;
unsigned sample_rate = 0;
unsigned channels = 0;
FLAC__uint64 last_decode_position = 0;
//counters
qint64 read_bytes = 0;
qint64 frame_counter = 0;
QIODevice *input = nullptr;
};
class DecoderFLAC : public Decoder
{
public:
explicit DecoderFLAC(const QString &path, QIODevice *i);
virtual ~DecoderFLAC();
// Standard Decoder API
bool initialize() override;
qint64 totalTime() const override;
int bitrate() const override;
qint64 read(unsigned char *data, qint64 maxSize) override;
void seek(qint64 time) override;
const QString nextURL() const override;
void next() override;
private:
// helper functions
void deinit();
uint findID3v2(char *data, ulong size); //retuns ID3v2 tag size
ChannelMap findChannelMap(int channels);
struct flac_data *m_data = nullptr;
qint64 length_in_bytes = 0;
qint64 m_totalBytes = 0;
qint64 m_offset = 0;
qint64 m_length = 0;
QString m_path;
CueParser *m_parser = nullptr;
int m_track = 0;
char *m_buf = nullptr; //buffer for remainig data
qint64 m_buf_size = 0;
qint64 m_sz = 0; //sample size
};
#endif // __decoder_flac_h
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