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${ noResults }
9 Commits (bd5c6a519e9bb36256cbcc188b6c9721760f2290)
| Author | SHA1 | Message | Date |
|---|---|---|---|
Michael Niedermayer
|
b1fdf81c6e |
avcodec/jpeg2000dwt: use 32x32->64 multiplies in the 9/7i DWT
This significantly improves the quality when the integer 9/7 transform is used Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
10 years ago |
|
Michael Niedermayer
|
6c7b1597c7 |
avcodec/jpeg2000: Move H band scaling from wavelet into quantization code
This reduces the number of operations done and is equivalent except for rounding Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
10 years ago |
|
Michael Niedermayer
|
1c495b0bf6 |
avcodec/jpeg2000: Move gainb handling into the quantization code
thats how the specification defines it, this also improves numerical accuracy of the integer wavelet implementation. It otherwise should be equivalent, in case of overflows this can be reverted. Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
10 years ago |
|
Michael Niedermayer
|
3bcf61f495 |
avcodec/jpeg2000dwt: Fix value of F_LFTG_X and I_LFTG_X
Even if the jpeg2000 spec uses a wrong value this does not make mathematics work this way, also this has been corrected in the 2004 version AFAIK Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
10 years ago |
|
Michael Niedermayer
|
75651cd63f |
avcodec/jpeg2000dwt: Fix order of operations in integer decomposition wavelets
Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
10 years ago |
|
Michael Niedermayer
|
7e2bdea764 |
avcodec/j2kenc: Use JP2 format by default
Without the JP2 fields its not possible to identify the colorspace Fixes Ticket538 Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
10 years ago |
|
Michael Niedermayer
|
4624656797 |
avcodec/j2kenc: Properly flush the end of the truncated AC stream
Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
10 years ago |
|
Michael Niedermayer
|
adfde9a646 |
avformat/avienc: Fix wrongly placed comment
Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
10 years ago |
Christophe Gisquet
|
8d02a55b1b |
tests: add a third, 34x34, target
This should exercise the corner cases of numerous codecs. Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
11 years ago |