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98 Commits

Author SHA1 Message Date
Andreas Rheinhardt
d26198ada3 avcodec/g2meet, mjpegdec: Factor out common VLC initialization code 
While just at it, remove the nb_codes parameter: It is redundant
(the number of codes is implicitly contained in the array containing how
many entries of a specific size there are) and for this reason it might
even be wrong, so it is better to check what is actually used instead.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
 2021-02-23 10:14:25 +01:00
Anton Khirnov
e15371061d lavu/mem: move the DECLARE_ALIGNED macro family to mem_internal on next+1 bump 
They are not properly namespaced and not intended for public use.
 2021-01-01 14:14:57 +01:00
Andreas Rheinhardt
73b3ea5728 avcodec/g2meet: Use least max_depth in get_vlc2() 
The longest AC codes of the standard JPEG tables are 16 bits long; for
the DC tables, the maximum is 11, so using max_depth of two is
sufficient.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
 2020-11-24 11:35:03 +01:00
Carl Eugen Hoyos
86f0bba776 lavc, lavf: Remove newlines from calls to avpriv_request_sample(). 2020-10-11 19:59:24 +02:00
Michael Niedermayer
5501bb28dd avcodec/g2meet: Check tile_width in epic_jb_decode_tile() 
Fixes: out of array access
Fixes: 21469/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_G2M_fuzzer-5199357982015488

Alternatively the arrays can be made bigger or the index can be clipped.
In case a real file with such huge tiles exist we ask the user to upload it.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2020-05-10 01:09:13 +02:00
Michael Niedermayer
61dd2e07be avcodec/g2meet: Check for end of input in jpg_decode_block() 
Fixes: Timeout (100sec -> 0.7sec)
Fixes: 8668/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_G2M_fuzzer-5174143888130048

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-10-02 14:49:04 +02:00
Michael Niedermayer
9c84c162e9 avcodec/g2meet: Check if adjusted pixel was on the stack 
This basically checks if a pixel that was coded with prediction
and residual could have been stored using a previous case.
This avoids basically a string of 0 symbols stored in less than
50 bytes to hit a O(n²) codepath.

Fixes: Timeout (too slow to wait -> immediately)
Fixes: 8668/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_G2M_fuzzer-4895946310680576

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-10-02 14:49:04 +02:00
Michael Niedermayer
ab834b8f36 avcodec/g2meet: ask for sample with overflowing RGB 
Suggested-by: Tomas Härdin <tjoppen@acc.umu.se>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-05-17 02:23:06 +02:00
Michael Niedermayer
4dd2c8b9ea avcodec/g2meet: Check RGB upper limit 
Fixes: runtime error: left shift of 1876744317 by 16 places cannot be represented in type 'int'
Fixes: 6799/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_G2M_fuzzer-5115274731716608

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-05-17 02:23:06 +02:00
Michael Niedermayer
0a47451458 avcodec/g2meet: Change order of operations to avoid undefined behavior 
Fixes: signed integer overflow: 65280 * 196032 cannot be represented in type 'int'
Fixes: 7279/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_G2M_fuzzer-5977332473921536

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-05-06 21:02:04 +02:00
Michael Niedermayer
0bd0401336 avcodec/elsdec: Fix memleaks 
Fixes: 6798/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_G2M_fuzzer-5135899701542912

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-04-25 23:09:47 +02:00
Michael Niedermayer
3981fb8d2a avcodec/g2meet: Check tile dimensions with av_image_check_size2() 
Fixes: OOM
Fixes: 6216/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_G2M_fuzzer-4983807968018432

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-02-27 19:37:06 +01:00
Martin Vignali
cbbec68847 libavcodec/blockdsp : add AVX version 
Also modify the required alignment, to 32 instead of 16
for several codecs

Signed-off-by: James Almer <jamrial@gmail.com>
 2017-10-03 19:47:37 -03:00
Clément Bœsch
e3287077ec Merge commit '67deba8a416d818f3d95aef0aa916589090396e2' 
* commit '67deba8a416d818f3d95aef0aa916589090396e2':
  Use avpriv_report_missing_feature() where appropriate

Merged-by: Clément Bœsch <cboesch@gopro.com>
 2017-03-31 10:40:34 +02:00
Diego Biurrun
67deba8a41 Use avpriv_report_missing_feature() where appropriate 2016-11-08 17:54:34 +01:00
Carl Eugen Hoyos
144ef773c7 Use correct msvc type specifiers for ptrdiff_t and size_t. 2016-03-09 14:00:22 +01:00
Michael Niedermayer
030c7f0309 avcodec/g2meet: Check for ff_els_decode_bit() failure in epic_decode_run_length() 
Fixes invalid shift
Fixes: g2m_left_shift_2.wmv

Found-by: Piotr Bandurski <ami_stuff@o2.pl>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2016-01-10 17:23:51 +01:00
Hendrik Leppkes
d3952510d2 Merge commit '3a4d369ea4ded91b1178ae6e2ff0ab9ea470e344' 
* commit '3a4d369ea4ded91b1178ae6e2ff0ab9ea470e344':
  g2m: Relax resolution change constraints

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
 2015-10-10 09:13:32 +02:00
Vittorio Giovara
3a4d369ea4 g2m: Relax resolution change constraints 
Do not fail when original resolution is smaller than current one,
as the frame buffer is resized automatically.

Signed-off-by: Vittorio Giovara <vittorio.giovara at gmail.com>
 2015-10-07 18:45:49 +02:00
Michael Niedermayer
fb04666995 avcodec/g2meet: Also clear tile dimensions on header_fail 
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2015-09-04 12:14:14 +02:00
Michael Niedermayer
71ec8e1ed6 avcodec/g2meet: Fix potential overflow in tile dimensions check 
Fixes CID1322351

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2015-09-04 12:14:13 +02:00
Michael Niedermayer
29d147c94d Merge commit '059a934806d61f7af9ab3fd9f74994b838ea5eba' 
* commit '059a934806d61f7af9ab3fd9f74994b838ea5eba':
  lavc: Consistently prefix input buffer defines

Conflicts:
	doc/examples/decoding_encoding.c
	libavcodec/4xm.c
	libavcodec/aac_adtstoasc_bsf.c
	libavcodec/aacdec.c
	libavcodec/aacenc.c
	libavcodec/ac3dec.h
	libavcodec/asvenc.c
	libavcodec/avcodec.h
	libavcodec/avpacket.c
	libavcodec/dvdec.c
	libavcodec/ffv1enc.c
	libavcodec/g2meet.c
	libavcodec/gif.c
	libavcodec/h264.c
	libavcodec/h264_mp4toannexb_bsf.c
	libavcodec/huffyuvdec.c
	libavcodec/huffyuvenc.c
	libavcodec/jpeglsenc.c
	libavcodec/libxvid.c
	libavcodec/mdec.c
	libavcodec/motionpixels.c
	libavcodec/mpeg4videodec.c
	libavcodec/mpegvideo.c
	libavcodec/noise_bsf.c
	libavcodec/nuv.c
	libavcodec/nvenc.c
	libavcodec/options.c
	libavcodec/parser.c
	libavcodec/pngenc.c
	libavcodec/proresenc_kostya.c
	libavcodec/qsvdec.c
	libavcodec/svq1enc.c
	libavcodec/tiffenc.c
	libavcodec/truemotion2.c
	libavcodec/utils.c
	libavcodec/utvideoenc.c
	libavcodec/vc1dec.c
	libavcodec/wmalosslessdec.c
	libavformat/adxdec.c
	libavformat/aiffdec.c
	libavformat/apc.c
	libavformat/apetag.c
	libavformat/avidec.c
	libavformat/bink.c
	libavformat/cafdec.c
	libavformat/flvdec.c
	libavformat/id3v2.c
	libavformat/isom.c
	libavformat/matroskadec.c
	libavformat/mov.c
	libavformat/mpc.c
	libavformat/mpc8.c
	libavformat/mpegts.c
	libavformat/mvi.c
	libavformat/mxfdec.c
	libavformat/mxg.c
	libavformat/nutdec.c
	libavformat/oggdec.c
	libavformat/oggparsecelt.c
	libavformat/oggparseflac.c
	libavformat/oggparseopus.c
	libavformat/oggparsespeex.c
	libavformat/omadec.c
	libavformat/rawdec.c
	libavformat/riffdec.c
	libavformat/rl2.c
	libavformat/rmdec.c
	libavformat/rtpdec_latm.c
	libavformat/rtpdec_mpeg4.c
	libavformat/rtpdec_qdm2.c
	libavformat/rtpdec_svq3.c
	libavformat/sierravmd.c
	libavformat/smacker.c
	libavformat/smush.c
	libavformat/spdifenc.c
	libavformat/takdec.c
	libavformat/tta.c
	libavformat/utils.c
	libavformat/vqf.c
	libavformat/westwood_vqa.c
	libavformat/xmv.c
	libavformat/xwma.c
	libavformat/yop.c

Merged-by: Michael Niedermayer <michael@niedermayer.cc>
 2015-07-27 23:15:19 +02:00
Michael Niedermayer
444e9874a7 Merge commit 'def97856de6021965db86c25a732d78689bd6bb0' 
* commit 'def97856de6021965db86c25a732d78689bd6bb0':
  lavc: AV-prefix all codec capabilities

Conflicts:
	cmdutils.c
	ffmpeg.c
	ffplay.c
	libavcodec/8svx.c
	libavcodec/aacenc.c
	libavcodec/ac3dec.c
	libavcodec/adpcm.c
	libavcodec/alac.c
	libavcodec/atrac3plusdec.c
	libavcodec/bink.c
	libavcodec/dnxhddec.c
	libavcodec/dvdec.c
	libavcodec/dvenc.c
	libavcodec/ffv1dec.c
	libavcodec/ffv1enc.c
	libavcodec/fic.c
	libavcodec/flacdec.c
	libavcodec/flacenc.c
	libavcodec/flvdec.c
	libavcodec/fraps.c
	libavcodec/frwu.c
	libavcodec/gifdec.c
	libavcodec/h261dec.c
	libavcodec/hevc.c
	libavcodec/iff.c
	libavcodec/imc.c
	libavcodec/libopenjpegdec.c
	libavcodec/libvo-aacenc.c
	libavcodec/libvorbisenc.c
	libavcodec/libvpxdec.c
	libavcodec/libvpxenc.c
	libavcodec/libx264.c
	libavcodec/mjpegbdec.c
	libavcodec/mjpegdec.c
	libavcodec/mpegaudiodec_float.c
	libavcodec/msmpeg4dec.c
	libavcodec/mxpegdec.c
	libavcodec/nvenc_h264.c
	libavcodec/nvenc_hevc.c
	libavcodec/pngdec.c
	libavcodec/qpeg.c
	libavcodec/ra288.c
	libavcodec/rv10.c
	libavcodec/s302m.c
	libavcodec/sp5xdec.c
	libavcodec/takdec.c
	libavcodec/tiff.c
	libavcodec/tta.c
	libavcodec/utils.c
	libavcodec/v210dec.c
	libavcodec/vp6.c
	libavcodec/vp9.c
	libavcodec/wavpack.c
	libavcodec/yop.c

Merged-by: Michael Niedermayer <michael@niedermayer.cc>
 2015-07-27 22:50:18 +02:00
Vittorio Giovara
059a934806 lavc: Consistently prefix input buffer defines 
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
 2015-07-27 15:24:59 +01:00
Vittorio Giovara
def97856de lavc: AV-prefix all codec capabilities 
Express bitfields more simply.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
 2015-07-27 15:24:58 +01:00
Michael Niedermayer
b1e242bc56 avcodec/g2meet: Check R/G/B values in epic_decode_pixel_pred() 
Fixes: asan_double-free_d34593_861_smp3.wmv

Found-by: Samuel Groß, Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2015-07-10 18:11:28 +02:00
Michael Niedermayer
80e42387dc avcodec/g2meet: Clear pointers after deallocation 
Fixes double free

Found-by: Samuel Groß, Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-07-08 15:38:37 +02:00
Michael Niedermayer
6205143bb3 Merge commit '9eec23b8a7fd0f91827bbc3ed0792c39a8cc9a8a' 
* commit '9eec23b8a7fd0f91827bbc3ed0792c39a8cc9a8a':
  g2meet: use av_ceil_log2 instead of a custom function

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2015-07-01 19:09:55 +02:00
Michael Niedermayer
92c858ae66 Merge commit '4ccccd6c40a6d0ce85e96a6e37f558236e2a6a75' 
* commit '4ccccd6c40a6d0ce85e96a6e37f558236e2a6a75':
  g2meet: use an unsigned type for the djb hash

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2015-07-01 19:09:10 +02:00
Janne Grunau
9eec23b8a7 g2meet: use av_ceil_log2 instead of a custom function 2015-07-01 13:58:34 +02:00
Janne Grunau
4ccccd6c40 g2meet: use an unsigned type for the djb hash 2015-07-01 13:34:50 +02:00
Michael Niedermayer
68939f7682 Merge commit '08c2d8f0aa679c2f060721d1d0d4f33d2ae32368' 
* commit '08c2d8f0aa679c2f060721d1d0d4f33d2ae32368':
  Go2Meeting decoder

Conflicts:
	Changelog
	libavcodec/g2meet.c
	libavcodec/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2015-07-01 03:18:30 +02:00
Kostya Shishkov
08c2d8f0aa Go2Meeting decoder 
ELS and ePIC decoder courtesy of Maxim Poliakovski,
cleanup and integration by Diego Biurrun.

Signed-off-by: Diego Biurrun <diego@biurrun.de>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
 2015-07-01 01:08:15 +02:00
Michael Niedermayer
b1b0baa3d6 avcodec/g2meet: Check init_get_bits8() return value 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-05-07 22:50:39 +02:00
Michael Niedermayer
43e94d5af4 avcodec/g2meet: Use init_get_bits8() 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-05-07 22:50:23 +02:00
Eric Zimmerman
eb31256f12 g2meet: Support G2M5 codec variant 
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
 2015-04-19 23:45:35 +01:00
Michael Niedermayer
edaca0812a Merge commit 'bb815dfc38b8ef7a89d6b9684ce0cdc296385d6d' 
* commit 'bb815dfc38b8ef7a89d6b9684ce0cdc296385d6d':
  g2meet: K&R formatting cosmetics

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2015-04-08 20:48:44 +02:00
Diego Biurrun
bb815dfc38 g2meet: K&R formatting cosmetics 2015-04-08 14:23:36 +02:00
Michael Niedermayer
a105931d3e Merge commit '4978850ca2cb1ec6908f5bc79cc592ca454d11e8' 
* commit '4978850ca2cb1ec6908f5bc79cc592ca454d11e8':
  build: Split JPEG-related tables off into a separate component

Conflicts:
	configure

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2015-03-31 01:11:02 +02:00
Diego Biurrun
4978850ca2 build: Split JPEG-related tables off into a separate component 2015-03-30 17:51:21 +02:00
Michael Niedermayer
2c22042aa0 avcodec/g2meet: Use av_mallocz_array() for framebuffer allocation 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-01-15 23:04:59 +01:00
Vittorio Giovara
2b5c1efa14 g2meet: check ff_set_dimensions return value 
CC: libav-stable@libav.org
Bug-Id: CID 1135739
 2014-11-13 01:41:26 +01:00
Michael Niedermayer
32e666c354 avcodec/g2meet: check tile dimensions to avoid integer overflow 
Fixes out of array access
Fixes: asan_heap-oob_12a55d3_30_029.wmv
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-10-30 01:22:32 +01:00
Eric Zimmerman
4ba5420e4d Added support for G2M5 codec 
This has also been independently found and fixed similarly by carl in
f4a3bbf4a3cd375121ea2495817f3e50e831ed48
The 2nd magic check is taken from carls implementation

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-10-24 19:36:09 +02:00
Michael Niedermayer
f00bb086cb Merge commit '14b4e64eabc84c5a5e57c8ccc56bbeb95380823b' 
* commit '14b4e64eabc84c5a5e57c8ccc56bbeb95380823b':
  g2meet: allow size changes within original sizes

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2014-07-16 03:40:51 +02:00
Vittorio Giovara
14b4e64eab g2meet: allow size changes within original sizes 2014-07-15 20:08:16 -04:00
Michael Niedermayer
581b5f0b9b Merge commit 'e3fcb14347466095839c2a3c47ebecff02da891e' 
* commit 'e3fcb14347466095839c2a3c47ebecff02da891e':
  dsputil: Split off IDCT bits into their own context

Conflicts:
	configure
	libavcodec/aic.c
	libavcodec/arm/Makefile
	libavcodec/arm/dsputil_init_arm.c
	libavcodec/arm/dsputil_init_armv6.c
	libavcodec/asvdec.c
	libavcodec/dnxhdenc.c
	libavcodec/dsputil.c
	libavcodec/dvdec.c
	libavcodec/dxva2_mpeg2.c
	libavcodec/intrax8.c
	libavcodec/mdec.c
	libavcodec/mjpegdec.c
	libavcodec/mjpegenc_common.h
	libavcodec/mpegvideo.c
	libavcodec/ppc/dsputil_altivec.h
	libavcodec/ppc/dsputil_ppc.c
	libavcodec/ppc/idctdsp.c
	libavcodec/x86/Makefile
	libavcodec/x86/dsputil_init.c
	libavcodec/x86/dsputil_mmx.c
	libavcodec/x86/dsputil_x86.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2014-07-01 15:22:11 +02:00
Diego Biurrun
e3fcb14347 dsputil: Split off IDCT bits into their own context 2014-06-30 07:58:46 -07:00
Michael Niedermayer
2b05db4f81 Merge commit 'e74433a8e6fc00c8dbde293c97a3e45384c2c1d9' 
* commit 'e74433a8e6fc00c8dbde293c97a3e45384c2c1d9':
  dsputil: Split clear_block*/fill_block* off into a separate context

Conflicts:
	configure
	libavcodec/asvdec.c
	libavcodec/dnxhddec.c
	libavcodec/dnxhdenc.c
	libavcodec/dsputil.h
	libavcodec/eamad.c
	libavcodec/intrax8.c
	libavcodec/mjpegdec.c
	libavcodec/ppc/dsputil_ppc.c
	libavcodec/vc1dec.c
	libavcodec/x86/dsputil_init.c
	libavcodec/x86/dsputil_mmx.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-19 04:54:38 +02:00
Diego Biurrun
e74433a8e6 dsputil: Split clear_block*/fill_block* off into a separate context 2014-06-18 14:07:23 -07:00