openjpeg - Fork of openjpeg library for JPEG2000 encoding and decoding

Age	Commit message (Collapse)	Author
2017-09-01	opj_compress help: revert 32572617765cb9d77302384653a48d793b8f657f and ↵	Even Rouault
	indicate 1 again as being the value to get lossless for -r. In opj_j2k_setup_encoder(), make sure that ll rates[] <= 1.0 are set to 0. Document 0 as being lossless for -q / tcp_distoratio (#1009)
2017-09-01	opj_v4dwt_decode_step2_sse(): loop unroll	Even Rouault

2017-09-01	opj_dwt_decode_partial_97(): simplify/more efficient use of sparse arrays in ↵	Even Rouault
	vertical pass
2017-09-01	opj_tcd_dc_level_shift_decode(): optimize lossy case	Even Rouault

2017-09-01	opj_dwt_decode_partial_1_parallel(): add SSE2 optimization	Even Rouault

2017-09-01	Sub-tile decoding: speed up vertical pass in IDWT5x3 by processing 4 cols at ↵	Even Rouault
	a time
2017-09-01	Tiny perf improvement in T1 stage for subtile decoding	Even Rouault

2017-09-01	Optimize opj_dwt_decode_partial_1() when cas == 0	Even Rouault

2017-09-01	opj_j2k_update_image_data(): avoid zero-ing the buffer if not needed	Even Rouault

2017-09-01	Optimize reading/write into sparse array	Even Rouault

2017-09-01	Allow several repeated calls to opj_set_decode_area() and opj_decode() for ↵	Even Rouault
	single-tiled images * Only works for single-tiled images --> will error out cleanly, as currently in other cases * Save re-reading the codestream for the tile, and re-use code-blocks of the previous decoding pass. * Future improvements might involve improving opj_decompress, and the image writing logic, to use this strategy.
2017-09-01	opj_j2k_decode_tiles(): apply whole single tile image decoding optimization ↵	Even Rouault
	to reading at reduced resolution as well
2017-09-01	Various changes to allow tile buffers of more than 4giga pixels	Even Rouault
	Untested though, since that means a tile buffer of at least 16 GB. So there might be places where uint32 overflow on multiplication still occur...
2017-09-01	TCD: allow tile buffer to be greater than 4GB on 64 bit hosts (but number of ↵	Even Rouault
	pixels must remain under 4 billion)
2017-09-01	Fix compiler warning in release mode	Even Rouault

2017-09-01	Remove limitation that prevents from opening images bigger than 4 billion pixels	Even Rouault
	However the intermediate buffer for decoding must still be smaller than 4 billion pixels, so this is useful for decoding at a lower resolution level, or subtile decoding.
2017-09-01	opj_tcd_init_tile(): fix typo on overflow detection condition (introduced in ↵	Even Rouault
	previous commit)
2017-09-01	opj_dwt_decode_partial_tile(): avoid undefined behaviour in lifting ↵	Even Rouault
	operation by properly initializing working buffer
2017-09-01	Sub-tile decoding: only allocate tile component buffer of the needed dimension	Even Rouault
	Instead of being the full tile size. * Use a sparse array mechanism to store code-blocks and intermediate stages of IDWT. * IDWT, DC level shift and MCT stages are done just on that smaller array. * Improve copy of tile component array to final image, by saving an intermediate buffer. * For full-tile decoding at reduced resolution, only allocate the tile buffer to the reduced size, instead of the full-resolution size.
2017-09-01	opj_j2k_setup_encoder(): validate code block width/height	Even Rouault

2017-09-01	opj_t1_allocate_buffers(): remove useless overflow checks	Even Rouault

2017-09-01	Fix undefined shift behaviour in opj_dwt_is_whole_tile_decoding(). Fixes ↵	Even Rouault
	https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3255. Credit to OSS Fuzz
2017-08-29	Use IDWT whole tile decoding if the area of interest equals to the image ↵	Even Rouault
	bounds, taking into account the reduced resolution factor
2017-08-28	Subtile decoding: fix overflows in subband coordinate computation that cause ↵	Even Rouault
	later buffer overflow. Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3115. Credit to OSS Fuzz. master only
2017-08-28	Make opj_set_decode_area() and opj_decode() take into account ↵	Even Rouault
	opj_set_decoded_resolution_factor() (#1006, affect API use) * Better document usage of opj_set_decode_area(), ie expecting coordinates in full resolution/reference grid even if requesting at a lower resolution factor * Make sure that image->comps[].factor is set by opj_set_decode_area() and opj_decode() from the value specified in opj_set_decoded_resolution_factor() * opj_decompress: add 2 environmenet variables to test alternate ways of using the API, namely USE_OPJ_SET_DECODED_RESOLUTION_FACTOR=YES to use opj_set_decoded_resolution_factor() instead of parameters.cp_reduce, and SKIP_OPJ_SET_DECODE_AREA=YES to not call opj_set_decode_area() if -d is not specified.
2017-08-23	opj_dwt_decode_partial_97(): perf improvement: limit copy of coefficients at ↵	Even Rouault
	end of horizontal pass to actual range of interest
2017-08-21	j2k.c: fix comment, and remove FIXME	Even Rouault

2017-08-21	Add comment	Even Rouault

2017-08-21	Add comments for filter_width values	Even Rouault

2017-08-20	Subtile decoding: only do 9x7 IDWT computations on relevant areas of ↵	Even Rouault
	tile-component buffer.
2017-08-18	Subtile decoding: only do 5x3 IDWT computations on relevant areas of ↵	Even Rouault
	tile-component buffer. This lowers 'bin/opj_decompress -i ../MAPA.jp2 -o out.tif -d 0,0,256,256' down to 0.860s
2017-08-17	opj_j2k_update_rates(): grow tile size buffer for some situations	Even Rouault

2017-08-17	Zero-initialize tile buffer regions of skipped code-blocks, so as to make ↵	Even Rouault
	Valgrind happy
2017-08-17	Sub-tile decoding: only decode precincts and codeblocks that intersect the ↵	Even Rouault
	window specified in opj_set_decode_area()
2017-08-17	bench_dwt.c: fix signedness related warnings	Even Rouault

2017-08-17	Avoid asserting on assert(i == pcol) in opj_jp2_apply_pclr() by adding new ↵	Even Rouault
	check in opj_jp2_check_color(). Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3068. Credit to OSS Fuzz
2017-08-16	opj_t1_encode_cblk(): avoid uint32 overflow when numbps = 0 (which is well ↵	Even Rouault
	defined behaviour, and is properly handled here, but better avoid it to detect real issues)
2017-08-16	opj_t2_encode_packet(): fix potential write heap buffer overflow (#992)	Even Rouault

2017-08-16	opj_j2k_write_sot(): fix potential write heap buffer overflow (#991)	Even Rouault

2017-08-16	opj_t2_encode_packet(): only emit an error about insufficiently large output ↵	Even Rouault
	buffer in FINAL_PASS mode. Fixes (master-only) regression added in 0b4fef6d1901254e41ab74ed681daba477d724c3
2017-08-15	Fix assertion in debug mode / heap-based buffer overflow in ↵	Even Rouault
	opj_write_bytes_LE for Cinema profiles with numresolutions = 1 (#985)
2017-08-14	Merge pull request #984 from stweil/const	Even Rouault
	Use more const qualifiers
2017-08-14	Encoder: grow buffer size in opj_tcd_code_block_enc_allocate_data() to avoid ↵	Even Rouault
	write heap buffer overflow in opj_mqc_flush (#982)
2017-08-14	Use const qualifier for mqc_states	Stefan Weil
	This allows more compiler optimizations. Signed-off-by: Stefan Weil <sw@weilnetz.de>
2017-08-14	Use const qualifier for j2k_prog_order_list	Stefan Weil
	This allows more compiler optimizations. Signed-off-by: Stefan Weil <sw@weilnetz.de>
2017-08-10	Fix argument order in error message of previous commit	Even Rouault

2017-08-10	Propagate event manager down to opj_t2_encode_packet() and use it to emit an ↵	Even Rouault
	error message when the output buffer is too small
2017-08-10	Fix crash on encoding if using opj_set_default_encoder_parameters() without ↵	Even Rouault
	defining tcp_numlayers
2017-08-10	Improve doc of opj_tccp_info_t::cblkw and cblkh	Even Rouault

2017-08-09	Remove useless opj_tcd_t::enumcs field added per #975	Even Rouault