changelog

the mpeg2/4 aac decoder

8 september 2004  mbakker(at)nero.com
    - specrec.c: fixed compilation without PS

4 september 2004  mbakker(at)nero.com
    - sbr_fbt.c, sbr_hfgen.c: fixed possible lockup with bad data.

4 september 2004  mbakker(at)nero.com
    - cfft.c,h, common.c,h, filtbank.c,h, mdct.h, sbr_qmf.h, structs.h, decoder.c, specrec.c:
         Removed USE_SSE

4 september 2004  gpascutto(at)nero.com
    - specrec.c: small optimizations to inverse quant

3 september 2004  mbakker(at)nero.com
    - neaacdec.h, decoder.c, syntax.c, structs.h: added output flag for PS

3 september 2004  mbakker(at)nero.com
    - common.c: added log2_fix()

28 august 2004  gpascutto(at)nero.com
    - sbr_syntax.c: bugfix with PS_DEC and DRM_PS defines

21 august 2004  mbakker(at)nero.com
    - cfft.c, cfft_tab.h: added size 128 fixed point FFT tables for HVXC

18 august 2004  mbakker(at)nero.com
    - sbr_syntax.c: allow only 1 PS data element per SBR extension data

18 august 2004  gpascutto(at)nero.com
    - specrec.c: safeguard against PS suddenly going on

4 august 2004   gpascutto(at)nero.com
    - drm_dec.c: make sure we still copy to the right channel if there's no data

2 august 2004   gpascutto(at)nero.com
    - hcr.c: bugfix

31 july 2004    gpascutto(at)nero.com
    - hcr.c: Rewritten and optimized

29 july 2004    mbakker(at)nero.com
    - /mp4ff/mp4ff.c,mp4atoms.c: support video decoding better

28 july 2004    gpascutto(at)nero.com
    - drm_dec.*, sbr_dec.c, syntax.c: improved error concealment

27 july 2004    gpascutto(at)nero.com
    - sbr_dec.c, sbr_syntax.c: duplicate code removal

25 july 2004    gpascutto(at)nero.com
    - syntax.c: re-enable SBR CRC checking for DRM

22 july 2004    gpascutto(at)nero.com
    - drm_dec.*: changed delay filter to 2 samples plus fractional delay, as in normal PS AAC
                (DRM standard is wrong here)
                
2 july 2004     mbakker(at)nero.com
    - huffman.c: Implemented VCB11 error concealment

22 june 2004    mbakker(at)nero.com
    - ps_dec.c: Removed samplerate dependancy in PS, likely to be updated in corrigendum

15 june 2004    mbakker(at)nero.com
    - sbr_dct.c,h: Removed huge ugly DCT_4_64...
    - sbr_qmf.c: replaced DCT_IV in qmf synthesis

13 june 2004    mbakker(at)nero.com
    - ps_dec.c: Fixed fixed point code, no more cos() and sin() used

7 june 2004     mbakker(at)nero.com
    - sbr_*.c,h: Overall speedups and improvements in SBR code.

4 june 2004     gpascutto(at)nero.com
    - drm_dec.c: Fixed a bug in the standard (PAN mixing)

3 june 2004     mbakker(at)nero.com
    - ps_syntax.c: fixed a bug in one of the huffman tables
 
2 june 2004     gpascutto(at)nero.com
    - drm_dec.c: Fully working fixed point support
 
27 may 2004     mbakker(at)nero.com
    - sbr_qmf.c, sbr_dec.h: Fixed fixed point problems with downsampled QMF

17 may 2004     mbakker(at)nero.com
    - syntax.c, decoder.c: Added some logging output

17 may 2004     mbakker(at)nero.com
    - mp4atom.c: Fixed an issue with broken MP4 files

16 may 2004     mbakker(at)nero.com
    - ps_dec.c: fixed point: forgot to convert a few multiplies

14 may 2004     mbakker(at)nero.com
    - sbr_*.c: reduced memory usage

6 may 2004      mbakker(at)nero.com
    - common.c: added some bit tricks and fixed point log2/pow2
    - sbr_hfadj.c: log2/pow2 based gain calculation for SBR
    - sbr_hfgen.c: use block exponent instead of stupid search to find max value

5 may 2004      mbakker(at)nero.com
    - decoder.c, neaacdec.h, decoder.h: added extra decode function to which a
      buffer can be provided. Instead of the library providing a buffer.

5 may 2004      mbakker(at)nero.com
    - mdct.c: fixed fixed point MDCT with framesizes 960, 480, 120

2 may 2004      mbakker(at)nero.com
    - mdct_tab.h, mdct.c: Added tables for MDCT, for increased accuracy in fixed point
    - specrec.c: Moved quantisation, scaling and reordering to 1 function

20 april 2004   gpacutto(at)nero.com
    - drm_dec.c, drm_dec.h: Don't do PS processing if no data was read this frame.
      Fix for bitstread reading bug in specification.

15 april 2004   mbakker(at)nero.com
    - sbr_hfadj.c: fixed buffer overflow
    - multiple: fixed some eVC problems

12 april 2004   mbakker(at)nero.com
    - common.h, ps_dec.c: Updates for PS fixed point, should completely work now

12 april 2004   gpascutto(at)nero.com
    - drm_dec.c, drm_dec.h: eliminated sqrt and SA mapping/dequantization from DRM PS decoder