mp3.h

凌阳32位单片机开发的小游戏

#ifndef __MP3_H__
#define __MP3_H__


/* define MP3 decoder PCM output FIFO size. */
#define PCM_FIFO_BYTE_SIZE          (1152*2/*ch*/*2/*bytes*/) // size in bytes
#define MP3_BITSTREAM_BUFFER_SIZE   (4096)

typedef enum
{
  MP3_OK            =  0,
  MP3_WAIT_INPUT    = -1,
  MP3_HEADER_SEARCH = -2,
  MP3_HEADER_RESYNC = -3,
  MP3_SYNTAX_ERROR  = -4
}
MP3_ERROR_CODE;

/* decoder options and interfaces. */
extern int mp3_get_header(void);
extern int mp3_get_bitrate(void);
extern int mp3_get_sampling_rate(void);
extern int mp3_get_frame_count(void);
extern int mp3_get_read_pointer(void);
MP3_ERROR_CODE mp3_errno(void);

extern int mp3_reset_decoder(unsigned char *mp3bsbuf);

extern int mp3_decode_frame(int bswp,       /* write pointer                */
                            short *pcmout); /* pcm sample buffer(output)    */

#endif //!__MP3_H__

//MP3_Status
#define	D_MP3_Play		0x0001
#define	D_MP3_Pause		0x0002
#define	D_MP3_Repeat	0x0004
#define D_MP3_Speed		0x0008