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// Copyright (c) 2000-2001 Brad Hughes <bhughes@trolltech.com>
//
// Use, modification and distribution is allowed without limitation,
// warranty, or liability of any kind.
//
#ifndef DECODER_MAD_H
#define DECODER_MAD_H
class QIODevice;
class DecoderMAD;
#include <qmmp/decoder.h>
#include "decodermadfactory.h"
extern "C"
{
#include <mad.h>
}
class DecoderMAD : public Decoder
{
public:
DecoderMAD(const QString &url, QIODevice *i);
virtual ~DecoderMAD();
// standard decoder API
bool initialize();
qint64 totalTime();
int bitrate();
qint64 read(char *data, qint64 size);
void seek(qint64);
private:
// helper functions
qint64 madOutput(char *data, qint64 size);
bool fillBuffer();
void deinit();
bool findHeader();
bool findXingHeader(struct mad_bitptr, unsigned int);
uint findID3v2(uchar *data, ulong size);
bool m_inited, m_eof;
qint64 m_totalTime;
int m_channels, m_skip_frames;
uint m_bitrate;
long m_freq, m_len;
qint64 m_output_bytes, m_output_at;
QString m_url;
// file input buffer
char *m_input_buf;
qint64 m_input_bytes;
// MAD decoder
struct
{
int flags;
unsigned long frames;
unsigned long bytes;
unsigned char toc[100];
long scale;
} xing;
enum
{
XING_FRAMES = 0x0001,
XING_BYTES = 0x0002,
XING_TOC = 0x0004,
XING_SCALE = 0x0008
};
struct mad_stream stream;
struct mad_frame frame;
struct mad_synth synth;
};
#endif // DECODER_MAD_H
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