avcodec/jpeg2000dec: Use 32x32->64bit for 9/7i dequantization
authorMichael Niedermayer <michaelni@gmx.at>
Wed, 24 Jun 2015 15:07:27 +0000 (17:07 +0200)
committerMichael Niedermayer <michaelni@gmx.at>
Wed, 24 Jun 2015 15:09:21 +0000 (17:09 +0200)
commitffa1de8a3b93139097214bc600d356ab62bfdf05
tree0b65d12ed8552c69f71d306261e9adabe19f7421
parent05ef6324d11017420a087150f2addbb18cdb9ad3
avcodec/jpeg2000dec: Use 32x32->64bit for 9/7i dequantization

Like the 5/3 case this is needed to avoid overflows and similarly for 16bpp
output pure 32bit operations are insufficient if high quality is wanted

Note, this code-path is only used in bitexact mode, so this should not
affect the speed of any real use-case

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
libavcodec/jpeg2000dec.c