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122 Commits

Author SHA1 Message Date
Andreas Rheinhardt
daf8b10eeb avcodec/rv10: Use symbol table more effectively 
The RealVideo 1.0 decoder uses VLCs to parse DC coefficients. But the
values returned from get_vlc2() are not directly used; instead
-(val - 128) (which is in the range -127..128) is. This transformation
is unnecessary as it can effectively be done when initializing the VLC
by modifying the symbols table used. There is just one minor
complication: The chroma table is incomplete and in order to distinguish
an error from get_vlc2() (due to an invalid code) the ordinary return
range is modified to 0..255. This is possible because the only caller of
this function is (on success) only interested in the return value modulo
256.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
 2020-12-08 17:51:45 +01:00
Michael Niedermayer
7f0498ed46 avcodec/ituh263dec: Check input for minimal frame size 
Fixes: Timeout (28sec -> 3sec)
Fixes: 17559/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_H263_fuzzer-5681050776240128

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-10-08 16:24:58 +02:00
Michael Niedermayer
8335ba8ae9 avcodec/ituh263dec: Make the condition for the studio slice start code match between ff_h263_resync() and ff_mpeg4_decode_studio_slice_header() 
If they mismatch an infinite loop can occur
Fixes: Timeout (infinite loop)
Fixes: 17043/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG4_fuzzer-5695051748868096

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-09-28 18:35:27 +02:00
Andreas Rheinhardt
324487b596 avcodec/ituh263dec: Fix undefined left shift of negative number 
Fixes ticket #8160.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-09-28 17:24:32 +02:00
Kieran Kunhya
f9d3841ae6 mpeg4video: Add support for MPEG-4 Simple Studio Profile. 
This is a profile supporting > 8-bit video and has a higher quality DCT
 2018-04-02 13:06:23 +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
Michael Niedermayer
12c3e120fe avcodec/ituh263dec: Use 0xffff as error code in h263p_decode_umotion() 
This matches ff_h263_decode_motion() both functions error codes are interpreted by the same common code

Fixes: 690/clusterfuzz-testcase-4744944981901312

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-03-02 03:16:12 +01:00
Michael Niedermayer
0716bcce5b avcodec/ituh263dec: Check for the bitstream end in ff_h263_decode_mb() 
Fixes invalid shift

Fixes: 670/clusterfuzz-testcase-4852021066727424

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-02-26 17:16:22 +01:00
Michael Niedermayer
0d85c7bb5a avcodec/ituh263dec: Fix runtime error: left shift of 1342177279 by 1 places cannot be represented in type 'int' 
Fixes: 659/clusterfuzz-testcase-5866673603084288

Huge DMV could be created by an encoder ignoring the spec

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-02-24 00:38:45 +01:00
Michael Niedermayer
631f748491 avcodec/ituh263dec: Fix runtime error: left shift of negative value -22 
Fixes: 639/clusterfuzz-testcase-5143866241974272

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-02-21 19:05:04 +01:00
Michael Niedermayer
b7d9b4a1f1 avcodec/ituh263dec: Check cbpy in ff_h263_decode_mb() 
Fixes: 618/clusterfuzz-testcase-6594990333493248

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-02-20 00:49:44 +01:00
Michael Niedermayer
39afd0482f avcodec/ituh263dec: Implement U263s interpretation of H.263 B frames 
Fixes Ticket1536

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-02-03 03:33:37 +01:00
Michael Niedermayer
0126cd95cc avcodec/ituh263dec: Correct timestamp recovery for B frames 
Improves u263_b-frames_5.avi

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-02-01 22:01:34 +01:00
Michael Niedermayer
901c625494 avcodec/ituh263dec: Use correct error codes in ff_h263_decode_mb() 
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-02-01 19:09:27 +01:00
Michael Niedermayer
e00c516d1e avcodec/ituh263dec: Correct indention 
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-02-01 19:09:27 +01:00
Michael Niedermayer
b28ae1e09b avcodec/ituh263dec: Implement B frame support with UMV 
Fixes: u263_b-frames_1.avi
Fixes part of Ticket1536

return -1 is used here as it is used in similar code in this function, I intend
to replace it by proper error codes in the whole function.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-02-01 17:35:54 +01:00
Michael Niedermayer
2baf36caed avcodec/ituh263dec: Avoid spending a long time in slice sync 
Fixes: 177/fuzz-3-ffmpeg_VIDEO_AV_CODEC_ID_FLV1_fuzzer

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2016-11-15 18:27:31 +01:00
Clément Bœsch
6c98398b0b lavc/get_bits: add a logging context to check_marker() 
Based on d338abb664febbc2c7266af7818aab1f12dbc161
 2016-06-22 20:07:49 +02:00
Clément Bœsch
8ef57a0d61 Merge commit '41ed7ab45fc693f7d7fc35664c0233f4c32d69bb' 
* commit '41ed7ab45fc693f7d7fc35664c0233f4c32d69bb':
  cosmetics: Fix spelling mistakes

Merged-by: Clément Bœsch <u@pkh.me>
 2016-06-21 21:55:34 +02:00
Vittorio Giovara
41ed7ab45f cosmetics: Fix spelling mistakes 
Signed-off-by: Diego Biurrun <diego@biurrun.de>
 2016-05-04 18:16:21 +02:00
Lou Logan
06eef96b69 fix some a/an typos 
Signed-off-by: Lou Logan <lou@lrcd.com>
 2016-03-28 14:13:17 -08:00
Michael Niedermayer
2a227fe879 Merge commit '0a49a62f998747cfa564d98d36a459fe70d3299b' 
* commit '0a49a62f998747cfa564d98d36a459fe70d3299b':
  h263: Always check both dimensions

Conflicts:
	libavcodec/ituh263dec.c

See: 62006b539ddda23594febf0fcb2f21c03de60457
Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2015-06-30 22:14:25 +02:00
Michael Niedermayer
5585da7c5e Merge commit '6f4cd33efb5a9ec75db1677d5f7846c60337129f' 
* commit '6f4cd33efb5a9ec75db1677d5f7846c60337129f':
  cosmetic: Reformat ff_h263_decode_mba

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2015-06-30 22:01:32 +02:00
Luca Barbato
0a49a62f99 h263: Always check both dimensions 
CC: libav-stable@libav.org
Found-By: ago@gentoo.org
 2015-06-30 15:34:38 +02:00
Luca Barbato
6f4cd33efb cosmetic: Reformat ff_h263_decode_mba 2015-06-30 15:34:38 +02:00
Michael Niedermayer
b5c71fba59 Merge commit 'e7af52a68dde9144b273a9598b60bf0f56e1323b' 
* commit 'e7af52a68dde9144b273a9598b60bf0f56e1323b':
  mpegvideo: rv10: Move function declaration to a separate header

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2015-06-12 21:05:57 +02:00
Michael Niedermayer
218f58a16a Merge commit 'e3d0f49abb20a551bf6d885f75c354d6d0bbeb9d' 
* commit 'e3d0f49abb20a551bf6d885f75c354d6d0bbeb9d':
  mpegvideo: h263: Move all tables to a single file

Conflicts:
	libavcodec/h263.h
	libavcodec/h263data.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2015-06-12 20:57:37 +02:00
Vittorio Giovara
e7af52a68d mpegvideo: rv10: Move function declaration to a separate header 2015-06-12 12:26:54 +01:00
Vittorio Giovara
e3d0f49abb mpegvideo: h263: Move all tables to a single file 2015-06-12 12:26:04 +01:00
Michael Niedermayer
fd116b8dfa Merge commit '378a00087fdadcc9b34165c05cd10a1a15f3fe61' 
* commit '378a00087fdadcc9b34165c05cd10a1a15f3fe61':
  mpegvideo: Move tables to a separate file

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2015-06-01 01:26:36 +02:00
Vittorio Giovara
378a00087f mpegvideo: Move tables to a separate file 2015-05-31 13:06:19 +02:00
Michael Niedermayer
75647622b5 Merge commit '6f57375d707de40dcec28d3cef886c364e032c21' 
* commit '6f57375d707de40dcec28d3cef886c364e032c21':
  rl: Rename ff_*_rl() to ff_rl_*()

Conflicts:
	libavcodec/mpeg4videodec.c
	libavcodec/rl.c
	libavcodec/rl.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2015-05-28 21:48:49 +02:00
Anton Khirnov
6f57375d70 rl: Rename ff_*_rl() to ff_rl_*() 2015-05-28 15:38:43 +01:00
Michael Niedermayer
d5227ceff1 Merge commit '9c1db92ad372d4cd69e0490e691c56e4097cb193' 
* commit '9c1db92ad372d4cd69e0490e691c56e4097cb193':
  mpegvideo: Drop err_recognition

Conflicts:
	libavcodec/h263dec.c
	libavcodec/ituh263dec.c
	libavcodec/mpeg4video.h
	libavcodec/mpeg4videodec.c
	libavcodec/msmpeg4dec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2015-05-22 20:38:42 +02:00
Vittorio Giovara
9c1db92ad3 mpegvideo: Drop err_recognition 
It is just a duplicate of an AVCodecContext member so use it instead.
 2015-05-22 15:34:39 +01:00
Michael Niedermayer
7b94a2f4b1 avcodec/ituh263dec: Use ff_tlog() for block level information 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-04-26 01:00:05 +02:00
Michael Niedermayer
8f7b022c8c Merge commit '6a85dfc830f51f1f5c2d36d4182d265c1ea3ba25' 
* commit '6a85dfc830f51f1f5c2d36d4182d265c1ea3ba25':
  lavc: Replace av_dlog and tprintf with internal macros

Conflicts:
	libavcodec/aacdec.c
	libavcodec/audio_frame_queue.c
	libavcodec/bitstream.c
	libavcodec/dcadec.c
	libavcodec/dnxhddec.c
	libavcodec/dvbsubdec.c
	libavcodec/dvdec.c
	libavcodec/dvdsubdec.c
	libavcodec/get_bits.h
	libavcodec/gifdec.c
	libavcodec/h264.h
	libavcodec/h264_cabac.c
	libavcodec/h264_cavlc.c
	libavcodec/h264_loopfilter.c
	libavcodec/h264_refs.c
	libavcodec/imc.c
	libavcodec/interplayvideo.c
	libavcodec/jpeglsdec.c
	libavcodec/libopencore-amr.c
	libavcodec/mjpegdec.c
	libavcodec/mpeg12dec.c
	libavcodec/mpegvideo_enc.c
	libavcodec/mpegvideo_parser.c
	libavcodec/pngdec.c
	libavcodec/ratecontrol.c
	libavcodec/rv10.c
	libavcodec/svq1dec.c
	libavcodec/vqavideo.c
	libavcodec/wmadec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2015-04-20 04:10:10 +02:00
Vittorio Giovara
6a85dfc830 lavc: Replace av_dlog and tprintf with internal macros 2015-04-19 12:41:59 +01:00
Michael Niedermayer
fbdaebb298 avcodec/ituh263dec: Use check_marker() 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-04-15 03:22:27 +02:00
Michael Niedermayer
c16896f525 Merge commit 'c01ccccbb13f464e74bb8498a8c573a66c430ca0' 
* commit 'c01ccccbb13f464e74bb8498a8c573a66c430ca0':
  ituh263dec: use macro instead of #if

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2015-01-29 22:02:22 +01:00
Vittorio Giovara
c01ccccbb1 ituh263dec: use macro instead of #if 2015-01-29 17:33:34 +00:00
Michael Niedermayer
17085a0251 Merge commit '7ea1b3472a61de4aa4d41b571e99418e4997ad41' 
* commit '7ea1b3472a61de4aa4d41b571e99418e4997ad41':
  lavc: deprecate the use of AVCodecContext.time_base for decoding

Conflicts:
	libavcodec/avcodec.h
	libavcodec/h264.c
	libavcodec/mpegvideo_parser.c
	libavcodec/utils.c
	libavcodec/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2014-10-15 15:49:31 +02:00
Anton Khirnov
7ea1b3472a lavc: deprecate the use of AVCodecContext.time_base for decoding 
When decoding, this field holds the inverse of the framerate that can be
written in the headers for some codecs. Using a field called 'time_base'
for this is very misleading, as there are no timestamps associated with
it. Furthermore, this field is used for a very different purpose during
encoding.

Add a new field, called 'framerate', to replace the use of time_base for
decoding.
 2014-10-15 06:37:43 +00:00
Reimar Döffinger
e8d0b84e8a h261dec, ituh263dec: Move condition. 
Stops compiler from doing incredibly stupid things.
With vsynth1-flv inner loop goes from 3501 to 3275
decicycles.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
 2014-09-01 19:41:20 +02:00
Reimar Döffinger
36c0043344 h261dec, ituh263dec: ensure CLOSE_READER is done on error paths, too. 
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
 2014-09-01 19:41:20 +02:00
Reimar Döffinger
2a00812d82 h261dec, ituh263dec: Avoid unnecessary -1 inside inner loop. 
3646 -> 3597 decicycles in inner loop when decoding
vsynth1-flv.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
 2014-09-01 19:41:20 +02:00
Reimar Döffinger
935453102b ituh263dec: Optimize new RL_VLC based decoding. 
Together with the switch to RL_VLC this results in
a speedup of about 30% in this inner loop.
Overall speedup only relevant for medium to high bitrate
streams.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
 2014-08-31 20:13:58 +02:00
Reimar Döffinger
da0a670b3c h261, h263 decoders: convert to RL_VLC. 
Some additional optimizations in following patch.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
 2014-08-31 20:09:54 +02:00
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