FFmpeg

Commit Graph

Author	SHA1	Message	Date
Carl Eugen Hoyos	0f5b996531	lavc/j2kenc: Make jp2 output compatible with Kakadu. Fixes ticket #4689.	10 years ago
Michael Niedermayer	96e73fa649	avcodec/jpeg2000dec: Merge i_stepsize/2 decoder special case into dequant Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
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	7c3f7e6ed1	avcodec/jpeg2000dwt: Support 9/7 singularity cases on the encoder side Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	9841024402	avcodec/jpeg2000dwt: More special cases to handle singularities in 9/7 decode Fixes Ticket4634 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
Michael Niedermayer	ed49b142bb	tests: Rename vsynth2 to vsynth_lena This avoids confusion with a growing number of vsynth tests Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago

13 Commits (7e4070d2e70bbd0e70dd83c06089e465a0eda704)