mpegimdc.h

mp3解码源代码

/****************************************************************************/

/*
 *	mpegimdc.h -- MPEG Audio IMDCT hybrid filter definitions
 *
 *	Author  :   St閜hane TAVENARD
 *
 *	(C) Copyright 1997-1997 St閜hane TAVENARD
 *	    All Rights Reserved
 *	
 *	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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

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#ifndef MPEGIMDCT_H
#define MPEGIMDCT_H
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#define MPEGIMDCT_BLOCK_TYPE	MPEGAUD_FRACT_TYPE

typedef struct {
	MPEGIMDCT_BLOCK_TYPE	prevblk[2][18*32];
} MPEGIMDCT;

extern MPEGIMDCT *MPEGIMDCT_open(void);
extern void	MPEGIMDCT_close(MPEGIMDCT *mpegimdct);
extern int	MPEGIMDCT_reset(MPEGIMDCT *mpegimdct);
extern int	MPEGIMDCT_hybrid(MPEGIMDCT *mpegimdct, MPEGAUD_FRACT_TYPE *in,
			MPEGAUD_FRACT_TYPE *out, INT16 block_type, BOOL mixed,
			INT16 ch, INT16 sb_max);

/****************************************************************************/
#endif /* MPEGIMDCT_H */