[FFmpeg-cvslog] r18860 - in trunk/libavcodec: ac3dec.c ac3dec_data.c ac3dec_data.h eac3dec.c
Wed May 20 00:23:38 CEST 2009
Michael Niedermayer wrote:
> On Sun, May 17, 2009 at 08:53:27AM +0200, jbr wrote:
>> Author: jbr
>> Date: Sun May 17 08:53:24 2009
>> New Revision: 18860
>> eac3dec: use 16-bit pre-mantissas instead of 24-bit in AHT decoding. it is
>> simpler and also fixes a bug in GAQ dequantization.
> are you sure 16bit precission is enough for that?
> what effect does this compared to double precission floats have on the
> PSNR ?
stddev: 7.95 PSNR: 78.30 bytes: 3999744/ 3999744
I think 16-bit is enough.
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