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path: root/src/lib/openjp2/t1.h
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2021-12-05Fix some typos (found by codespell)Stefan Weil
Signed-off-by: Stefan Weil <sw@weilnetz.de>
2020-05-24T1 encoder: speed-up by aggressive inlining and more cache friendly data ↵Even Rouault
organization ~ 9% speed improvement seen on 10980x10980 uint16 image, T36JTT_20160914T074612_B02.tif opj_compress time from 17.2s to 15.8s
2020-05-20Add multithreading support in the T1 (entropy phase) encoderEven Rouault
- API wise, opj_codec_set_threads() can be used on the encoding side - opj_compress has a -threads switch similar to opj_uncompress
2017-08-17Sub-tile decoding: only decode precincts and codeblocks that intersect the ↵Even Rouault
window specified in opj_set_decode_area()
2017-08-07Slight improvement in management of code block chunksEven Rouault
Instead of having the chunk array at the segment level, we can move it down to the codeblock itself since segments are filled in sequential order. Limit the number of memory allocation, and decrease slightly the memory usage. On MAPA_005.jp2 n4: 1871312549 (heap allocation functions) malloc/new/new[], --alloc-fns, etc. n1: 1610689344 0x4E781E7: opj_aligned_malloc (opj_malloc.c:61) n1: 1610689344 0x4E71D1B: opj_alloc_tile_component_data (tcd.c:676) n1: 1610689344 0x4E726CF: opj_tcd_init_decode_tile (tcd.c:816) n1: 1610689344 0x4E4BE39: opj_j2k_read_tile_header (j2k.c:8617) n1: 1610689344 0x4E4C902: opj_j2k_decode_tiles (j2k.c:10348) n1: 1610689344 0x4E4E3CE: opj_j2k_decode (j2k.c:7846) n1: 1610689344 0x4E53002: opj_jp2_decode (jp2.c:1564) n0: 1610689344 0x40374E: main (opj_decompress.c:1459) n1: 219232541 0x4E4BC50: opj_j2k_read_tile_header (j2k.c:4683) n1: 219232541 0x4E4C902: opj_j2k_decode_tiles (j2k.c:10348) n1: 219232541 0x4E4E3CE: opj_j2k_decode (j2k.c:7846) n1: 219232541 0x4E53002: opj_jp2_decode (jp2.c:1564) n0: 219232541 0x40374E: main (opj_decompress.c:1459) n1: 23893200 0x4E72735: opj_tcd_init_decode_tile (tcd.c:1225) n1: 23893200 0x4E4BE39: opj_j2k_read_tile_header (j2k.c:8617) n1: 23893200 0x4E4C902: opj_j2k_decode_tiles (j2k.c:10348) n1: 23893200 0x4E4E3CE: opj_j2k_decode (j2k.c:7846) n1: 23893200 0x4E53002: opj_jp2_decode (jp2.c:1564) n0: 23893200 0x40374E: main (opj_decompress.c:1459) n0: 17497464 in 52 places, all below massif's threshold (1.00%)
2017-08-07Decoding: do not allocate memory for the codestream of each codeblockEven Rouault
Currently we allocate at least 8192 bytes for each codeblock, and copy the relevant parts of the codestream in that per-codeblock buffer as we decode packets. As the whole codestream for the tile is ingested in memory and alive during the decoding, we can directly point to it instead of copying. But to do that, we need an intermediate concept, a 'chunk' of code-stream segment, given that segments may be made of data at different places in the code-stream when quality layers are used. With that change, the decoding of MAPA_005.jp2 goes down from the previous improvement of 2.7 GB down to 1.9 GB. New profile: n4: 1885648469 (heap allocation functions) malloc/new/new[], --alloc-fns, etc. n1: 1610689344 0x4E78287: opj_aligned_malloc (opj_malloc.c:61) n1: 1610689344 0x4E71D7B: opj_alloc_tile_component_data (tcd.c:676) n1: 1610689344 0x4E7272C: opj_tcd_init_decode_tile (tcd.c:816) n1: 1610689344 0x4E4BDD9: opj_j2k_read_tile_header (j2k.c:8618) n1: 1610689344 0x4E4C8A2: opj_j2k_decode_tiles (j2k.c:10349) n1: 1610689344 0x4E4E36E: opj_j2k_decode (j2k.c:7847) n1: 1610689344 0x4E52FA2: opj_jp2_decode (jp2.c:1564) n0: 1610689344 0x40374E: main (opj_decompress.c:1459) n1: 219232541 0x4E4BBF0: opj_j2k_read_tile_header (j2k.c:4685) n1: 219232541 0x4E4C8A2: opj_j2k_decode_tiles (j2k.c:10349) n1: 219232541 0x4E4E36E: opj_j2k_decode (j2k.c:7847) n1: 219232541 0x4E52FA2: opj_jp2_decode (jp2.c:1564) n0: 219232541 0x40374E: main (opj_decompress.c:1459) n1: 39822000 0x4E727A9: opj_tcd_init_decode_tile (tcd.c:1219) n1: 39822000 0x4E4BDD9: opj_j2k_read_tile_header (j2k.c:8618) n1: 39822000 0x4E4C8A2: opj_j2k_decode_tiles (j2k.c:10349) n1: 39822000 0x4E4E36E: opj_j2k_decode (j2k.c:7847) n1: 39822000 0x4E52FA2: opj_jp2_decode (jp2.c:1564) n0: 39822000 0x40374E: main (opj_decompress.c:1459) n0: 15904584 in 52 places, all below massif's threshold (1.00%)
2017-07-30src/lib/openjp2/*.h: use OPJ_ prefix for inclusion guards instead of ↵Even Rouault
reserved __ (#587)
2017-07-30Fix Doxygen warnings (patch derived from Winfried's doxygen-dif.txt.zip, #849)Even Rouault
2017-07-26T1 decoder: check code stream errors when predictable termination is enabled ↵Even Rouault
and emit a warning when errors are found
2017-06-02MQC/RAW decoder: use an artificial 0xFF 0xFF terminating marker.Even Rouault
This saves comparing the current pointer with the end of buffer pointer. This results at least in tiny speed improvement for raw decoding, and smaller code size for MQC as well. This kills the remains of the raw.h/.c files that were only used for decoding. Encoding using the mqc structure already.
2017-06-02Fix documentation of opj_t1_decode_cblks()Even Rouault
2017-06-02Optimize opj_t1_update_flags()Even Rouault
2017-06-02T1: avoid pointer indirection for mqc and raw members of opj_t1_tEven Rouault
2017-06-02T1: remove flags_stride variable from opj_t1_tEven Rouault
2017-06-02T1: Transpose coder optimizations to decoder, and cleanup codeEven Rouault
2017-05-23T1: remove unused code in decoderEven Rouault
2017-05-23T1: fix VSC mode in encoderEven Rouault
2017-05-23T1: use more compact flags to optimize cache usage in encoder passes. (#172)Even Rouault
Ported from Carl Hetherington work (actually through Matthieu Darbois's port on top of OpenJPEG 2.1.0) Can reduce total encoding time by 10-15% WARNING: VSC mode is not implemented, and so is a temporary regression that must be fixed.
2017-05-15Reformat: apply reformattin on .h files (#128)Even Rouault
2016-09-14Flags in T1 shall be unsigned (#840)Matthieu Darbois
This will remove some conversion warnings
2016-05-25Use thread-pool for T1 decodingEven Rouault
2016-05-23Tier 1 decoding: add a colflags arrayEven Rouault
Addition flag array such that colflags[1+0] is for state of col=0,row=0..3, colflags[1+1] for col=1, row=0..3, colflags[1+flags_stride] for col=0,row=4..7, ... This array avoids too much cache trashing when processing by 4 vertical samples as done in the various decoding steps.
2016-05-21opj_t1_updateflags(): tiny optimizationEven Rouault
We can avoid using a loop-up table with some shift arithmetics.
2014-12-09[trunk] check number of components when getting mct norm (fixes issue 436)Antonin Descampe
2014-11-03[trunk] significantly reduces memory for single tile RGB encoding (fixesAntonin Descampe
issue 375)
2014-04-03[trunk] updated copyright and added copyright notice required by ISO, in ↵Antonin Descampe
each file; updated AUTHORS, NEWS
2012-11-15[trunk] move opj_bool to OPJ_BOOL to follow the other typeMickael Savinaud
2012-10-29[trunk] remove old struct from V1 and not used in V2Mickael Savinaud
2012-10-25[trunk] [trunk] remove old opj_tcp and rename opj_tcp_v2 to opj_tcpMickael Savinaud
2012-10-25[trunk] rename opj_tcd_truct_v2 to opj_tcd_structMickael Savinaud
2012-10-24[trunk] rename flag_t to opj_flag_t Mickael Savinaud
2012-10-15[trunk] Remove some warnings about missing prototypes (gcc)Mathieu Malaterre
2012-09-28[trunk] Start FolderReorgProposal taskMathieu Malaterre
Update issue 177
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