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/**********************************************************************
* ISO MPEG Audio Subgroup Software Simulation Group (1996)
* ISO 13818-3 MPEG-2 Audio Encoder - Lower Sampling Frequency Extension
*
* $Id: common.c,v 1.2 1997/01/19 22:28:29 rowlands Exp $
*
* $Log: common.c,v $
* Revision 1.2 1997/01/19 22:28:29 rowlands
* Layer 3 bug fixes from Seymour Shlien
*
* Revision 1.1 1996/02/14 04:04:23 rowlands
* Initial revision
*
* Received from Mike Coleman
**********************************************************************/
/**********************************************************************
* date programmers comment *
* 2/25/91 Doulas Wong, start of version 1.0 records *
* Davis Pan *
* 5/10/91 W. Joseph Carter Created this file for all common *
* functions and global variables. *
* Ported to Macintosh and Unix. *
* Added Jean-Georges Fritsch's *
* "bitstream.c" package. *
* Added routines to handle AIFF PCM *
* sound files. *
* Added "mem_alloc()" and "mem_free()" *
* routines for memory allocation *
* portability. *
* Added routines to convert between *
* Apple SANE extended floating point *
* format and IEEE double precision *
* floating point format. For AIFF. *
* 02jul91 dpwe (Aware Inc) Moved allocation table input here; *
* Tables read from subdir TABLES_PATH. *
* Added some debug printout fns (Write*)*
* 7/10/91 Earle Jennings replacement of the one float by FLOAT *
* port to MsDos from MacIntosh version *
* 8/ 5/91 Jean-Georges Fritsch fixed bug in open_bit_stream_r() *
*10/ 1/91 S.I. Sudharsanan, Ported to IBM AIX platform. *
* Don H. Lee, *
* Peter W. Farrett *
*10/3/91 Don H. Lee implemented CRC-16 error protection *
* newly introduced functions are *
* I_CRC_calc, II_CRC_calc and *
* update_CRC. Additions and revisions *
* are marked with dhl for clarity *
*10/18/91 Jean-Georges Fritsch fixed bug in update_CRC(), *
* II_CRC_calc() and I_CRC_calc() *
* 2/11/92 W. Joseph Carter Ported new code to Macintosh. Most *
* important fixes involved changing *
* 16-bit ints to long or unsigned in *
* bit alloc routines for quant of 65535 *
* and passing proper function args. *
* Removed "Other Joint Stereo" option *
* and made bitrate be total channel *
* bitrate, irrespective of the mode. *
* Fixed many small bugs & reorganized. *
* 3/20/92 Jean-Georges Fritsch fixed bug in start-of-frame search *
* 6/15/92 Juan Pineda added refill_buffer(bs) "n" *
* initialization *
* 7/08/92 Susanne Ritscher MS-DOS, MSC6.0 port fixes *
* 7/27/92 Mike Li (re-)Port to MS-DOS *
* 8/19/92 Soren H. Nielsen Fixed bug in I_CRC_calc and in *
* II_CRC_calc. Added function: new_ext *
* for better MS-DOS compatability *
* 3/10/93 Kevin Peterson changed aiff_read_headers to handle *
* chunks in any order. now returns *
* position of sound data in file. *
* 3/31/93 Jens Spille changed IFF_* string compares to use *
* strcmp() *
* 5/30/93 Masahiro Iwadare removed the previous modification *
* for UNIX. *
* 8/27/93 Seymour Shlien, Fixes in Unix and MSDOS ports, *
* Daniel Lauzon, and *
* Bill Truerniet *
*--------------------------------------------------------------------*
* 8/24/93 Masahiro Iwadare Included IS modification in Layer III.*
* Changed for 1 pass decoding. *
* 9/07/93 Toshiyuki Ishino Integrated Layer III with Ver 3.9. *
*--------------------------------------------------------------------*
* 11/20/93 Masahiro Iwadare Integrated Layer III with Ver 4.0. *
*--------------------------------------------------------------------*
* 7/14/94 Juergen Koller rewind of bitbuffer added *
* 6/12/95 Soeren H. Nielsen Bug fix in new_ext(). *
* 7/11/95 Soeren H. Nielsen Changes for MPEG-2 LSF Layer I and II *
*--------------------------------------------------------------------*
* 8/02/95 mc@fivebats.com Added code to determine byte-order, *
* fixes to AIFF routines. Modified Mac *
* code to work with new Apple headers *
**********************************************************************/
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