mp4au.h

MPEG2/MPEG4编解码参考程序(实现了MPEG4的部分功能)

/**********************************************************************
MPEG-4 Audio VM
Frame work

This software module was originally developed by

Heiko Purnhagen (University of Hannover / ACTS-MoMuSys)

and edited by

Ralph Sperschneider (Fraunhofer Gesellschaft IIS)

in the course of development of the MPEG-2 NBC/MPEG-4 Audio standard
ISO/IEC 13818-7, 14496-1,2 and 3. This software module is an
implementation of a part of one or more MPEG-2 NBC/MPEG-4 Audio tools
as specified by the MPEG-2 NBC/MPEG-4 Audio standard. ISO/IEC gives
users of the MPEG-2 NBC/MPEG-4 Audio standards free license to this
software module or modifications thereof for use in hardware or
software products claiming conformance to the MPEG-2 NBC/ MPEG-4 Audio
standards. Those intending to use this software module in hardware or
software products are advised that this use may infringe existing
patents. The original developer of this software module and his/her
company, the subsequent editors and their companies, and ISO/IEC have
no liability for use of this software module or modifications thereof
in an implementation. Copyright is not released for non MPEG-2
NBC/MPEG-4 Audio conforming products. The original developer retains
full right to use the code for his/her own purpose, assign or donate
the code to a third party and to inhibit third party from using the
code for non MPEG-2 NBC/MPEG-4 Audio conforming products. This
copyright notice must be included in all copies or derivative works.

Copyright (c) 1996.



Header file: mp4.h

$Id: mp4au.h,v 1.2 1999/05/20 17:10:28 purnhage Exp $

Authors:
HP    Heiko Purnhagen, Uni Hannover <[e-mail]>
BT    Bodo Teichmann, FhG/IIS <[e-mail]>

Changes:
14-aug-96   HP    first version
21-aug-96   HP    adjusted MAXREADAHEAD, BITHEADERBUFSIZE to BG's code
26-aug-96   HP    CVS
30-oct-96   HP    additional frame work options
18-nov-96   HP    added bit stream version
10-dec-96   HP    incremented MP4_BS_VERSION
17-jan-97   HP    reduced MAXREADAHEAD, BITHEADERBUFSIZE after
                  bug fix in bitstream.c
14-mar-97   HP    merged FhG AAC code
21-mar-97   BT    made strings static
15-may-97   HP    clean up
22-jan-99   HP    fixed MAXREADAHEAD, BITHEADERBUFSIZE
**********************************************************************/


#ifndef _mp4_h_
#define _mp4_h_


/* ---------- declarations ---------- */

#define def2str(a) def2str_(a)
#define def2str_(a) #a

#define STRLEN 255

#define MP4_ORI_PATH_ENV "MP4_ORI_PATH"
#define MP4_BIT_PATH_ENV "MP4_BIT_PATH"
#define MP4_DEC_PATH_ENV "MP4_DEC_PATH"
#define MP4_ORI_FMT_ENV "MP4_ORI_FORMAT"
#define MP4_DEC_FMT_ENV "MP4_DEC_FORMAT"
#define MP4_ORI_EXT ".au"
#define MP4_BIT_EXT ".mp4"
#define MP4_DEC_EXT ".au"
#define MP4_ORI_RAW_ENV "MP4_RAWAUDIOFILE"

#define MP4_MAGIC ".mp4"

#define MP4_BS_VERSION 0x4003

#define MAXREADAHEAD 65536
#define BITHEADERBUFSIZE 65536

/* codec mode */

enum MP4Mode {MODE_UNDEF, MODE_PAR, MODE_LPC, MODE_TF, MODE_G729,
	      MODE_G723, MODE_HVXC, MODE_NUM};

#define MODENAME_UNDEF "undefined"
#define MODENAME_PAR "par"
#define MODENAME_LPC "lpc"
#define MODENAME_TF "tf"
#define MODENAME_G729 "g729"
#define MODENAME_G723 "g723"
#define MODENAME_HVXC "hvxc"

static char *MP4ModeName[] = {MODENAME_UNDEF, 
                              MODENAME_PAR, 
                              MODENAME_LPC,
			      MODENAME_TF, 
                              MODENAME_G729, 
                              MODENAME_G723,
                              MODENAME_HVXC};

#define MODENAME_LIST MODENAME_PAR ", " MODENAME_LPC \
		      ", " MODENAME_TF ", " MODENAME_G729 ", " \
		      MODENAME_G723 ", " MODENAME_HVXC

/* error resilience */
#define MAX_CLASSES  8

#endif	/* #ifndef _mp4_h_ */

/* end of mp4.h */