FFmpeg

Commit Graph

Author	SHA1	Message	Date
Michael Niedermayer	feb3f39614	avcodec/jpeg2000dwt: Check ndeclevels before calling dwt_encode*() Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	9 years ago
Michael Niedermayer	75422280fb	avcodec/jpeg2000dwt: Check ndeclevels before calling dwt_decode*() Fixes out of array access Fixes: 01859c9a9ac6cd60a008274123275574/asan_heap-oob_1dff571_8250_50d3d1611e294c3519fd1fa82198b69b.avi Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	9 years ago
Michael Niedermayer	0eb7de1973	avcodec/jpeg2000: Change coord to 32bit to support larger than 32k width or height Fixes: 03e0abe721b1174856d41a1eb5d6a896/signal_sigabrt_7ffff6ae7cc9_3813_e71bf3541abed3ccba031cd5ba0269a4.avi Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	9 years ago
Michael Niedermayer	0416b5e033	avcodec/jpeg2000dwt: Replace /2 by >>1 Divisions can be slow if the compiler fails to replace them by shifts Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	f067ee57c9	avcodec/jpeg2000dwt: Move large arrays used in the test code away from the stack This should avoid problems on systems with little stack space and fix some crashes in fate crash found-by: jamrial Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	8428e2c5f3	avcodec/jpeg2000dwt: Print 1 digit less in the 9/7f DWT test This avoids test failure due to differing rounding between 32 and 64bit x86 Found-by: jamrial Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	19dc1ed4ad	avcodec/jpeg2000dwt: Use a tighter check threshold for the 9/7f DWT test Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	4e926fb969	avcodec/jpeg2000: Move L band scaling from the 9/7f wavelet to quantization stage This reduces the number of operations Its not done for 9/7i as that would overflow thanks to JPEG2000 allowing 32 decomposition levels 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	69f7ccef8e	avcodec/jpeg2000dwt: Move K/X constants to header this makes them accessible by the rest of the jpeg2000 code 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	4299f085f4	avcodec/jpeg2000dwt: also test 9/7 float DWT Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	6528b90dea	avcodec/jpeg2000dwt: List differences for DWT test Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	aa594415a0	avcodec/jpeg2000dwt: increase the number of test iterations the code had too little coverage Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	d23b3f3940	avcodec/jpeg2000dwt: Also test 9/7 integer DWT Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	3bd46914fb	avcodec/jpeg2000dwt: Allow testing with a maximum allowed difference Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	5358953cdf	avcodec/jpeg2000dwt: Fill array using 2d instead of 1d accesses Avoids gcc warning Found-by: jamrial Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	116e7d5418	avcodec/jpeg2000dwt: Factor dwt test code out so it can be easily used with the other dwts too Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	a75ca3ca6a	avcodec/jpeg2000dwt: Fix special cases in sd_1d53() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	de99ce4306	avcodec/jpeg2000dwt: add test for the 5/3 wavelet 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	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	1125c71fd7	avcodec/jpeg2000dwt: assert that mod == 0 for encoding We are missing the handling of some special cases for this. These cases should be unused and there should be no reason to ever use them unless some spec dictates their use Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	34121ca187	avcodec/jpeg2000dwt: Fix 9/7 IDWT for small sizes Fixes Ticket4631 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	8294ec67b5	avcodec/jpeg2000dwt: add special cases for handling length 1 in 5/3 decode Fixes Ticket4630 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	1aa388d439	avcodec/jpeg2000dwt: use av_malloc_array() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	c4604b8792	jpeg2000: Merge rescaling with interleaving in 9/7 IDWT Signed-off-by: Luca Barbato <lu_zero@gentoo.org>	12 years ago
Michael Niedermayer	8a266aaaac	avcodec/jpeg2000dwt: merge rescaling with interleave in 9/7 int IDWT Tha fate tests change because the edge mirroring was wrong before this commit Reviewed-by: Nicolas BERTRAND <nicoinattendu@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	96b71a6ec5	avcodec/jpeg2000dwt: merge rescaling with interleave in 9/7 float IDWT 10% faster Reviewed-by: Nicolas BERTRAND <nicoinattendu@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	197e219c92	jpeg2000dwt: add float based 9/7 dwt Untested as theres no code yet using it in the encoder. Code based on mixed float/int dwt Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	cf05fe8a7e	jpeg2000dwt: remove floats from mixed float/int 9/7 dwt This should fix some fate failures Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	d4a4661342	j2k/jpeg2000: merge j2k & jpeg2000 dwts, drop j2k dwt Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Nicolas Bertrand	c81a706381	JPEG 2000 decoder for DCinema Based on the 2007 GSoC project from Kamil Nowosad <k.nowosad@students.mimuw.edu.pl> Updated to current programming standards, style and many more small fixes by Diego Biurrun <diego@biurrun.de>. Signed-off-by: Diego Biurrun <diego@biurrun.de>	12 years ago

36 Commits (61625dcc395f98ad77e9378ec4eb48cf7c981bce)