76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
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struct buf {
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unsigned char *pnt;
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long size;
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long pos;
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struct buf *next;
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struct buf *prev;
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};
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struct framebuf {
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struct buf *buf;
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long pos;
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struct frame *next;
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struct frame *prev;
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};
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struct mpstr {
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struct buf *head,*tail;
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int bsize;
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int framesize;
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int fsizeold;
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struct frame fr;
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unsigned char bsspace[2][MAXFRAMESIZE+512]; /* MAXFRAMESIZE */
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real hybrid_block[2][2][SBLIMIT*SSLIMIT];
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int hybrid_blc[2];
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unsigned long header;
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int bsnum;
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real synth_buffs[2][2][0x110];
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int synth_bo;
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long outscale; /* volume control default value 32768 */
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long outsamplerate; /* raw output rate default same as mp3 sample rate*/
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struct pcm_workingsample worksample; /* keep the state of the working sample for threads */
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int initmp3; /* flag for first initialisation */
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int longLimit[9][23]; /*sample limits re setting volume */
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int shortLimit[9][14];
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real decwin[512+32]; /* scale table */
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};
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#define BOOL int
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#define MP3_ERR -1
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#define MP3_OK 0
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#define MP3_NEED_MORE 1
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void InitMP3Constants(void);
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BOOL InitMP3(struct mpstr *mp, long outscale);
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int decodeMP3(struct mpstr *mp,char *inmemory,int inmemsize,
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char *outmemory,int outmemsize,int *done);
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void ExitMP3(struct mpstr *mp);
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extern int synth_ntom_set_step(long,long);
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extern int synth_ntom(struct mpstr *mp, real *bandPtr,int channel,unsigned char *out,int *pnt);
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extern int synth_ntom_mono (struct mpstr *mp, real *bandPtr,unsigned char *samples,int *pnt);
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extern int synth_ntom_8bit (real *,int,unsigned char *,int *);
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extern int synth_ntom_mono2stereo (real *,unsigned char *,int *);
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extern int synth_ntom_8bit_mono (real *,unsigned char *,int *);
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extern int synth_ntom_8bit_mono2stereo (real *,unsigned char *,int *);
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extern void init_layer3_sample_limits(struct mpstr *mp, int down_sample_sblimit);
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extern void init_layer3_const(void);
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extern int do_layer3(struct mpstr *mp,unsigned char *,int *);
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extern void make_decode_tables_scale(struct mpstr *mp, long scaleval);
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extern void make_decode_tables_const(void);
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extern void make_conv16to8_table(int);
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extern void dct64(real *,real *,real *);
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extern unsigned int get1bit(struct mpstr *mp);
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extern unsigned int getbits(struct mpstr *mp, int);
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extern unsigned int getbits_fast(struct mpstr *mp, int);
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extern int set_pointer(struct mpstr *mp, long backstep);
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