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Author SHA1 Message Date
Andreas Rheinhardt
4243da4ff4 avcodec/codec_internal: Use union for FFCodec decode/encode callbacks 
This is possible, because every given FFCodec has to implement
exactly one of these. Doing so decreases sizeof(FFCodec) and
therefore decreases the size of the binary.
Notice that in case of position-independent code the decrease
is in .data.rel.ro, so that this translates to decreased
memory consumption.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-04-05 20:02:37 +02:00
Andreas Rheinhardt
20f9727018 avcodec/codec_internal: Add FFCodec, hide internal part of AVCodec 
Up until now, codec.h contains both public and private parts
of AVCodec. This exposes the internals of AVCodec to users
and leads them into the temptation of actually using them
and forces us to forward-declare structures and types that
users can't use at all.

This commit changes this by adding a new structure FFCodec to
codec_internal.h that extends AVCodec, i.e. contains the public
AVCodec as first member; the private fields of AVCodec are moved
to this structure, leaving codec.h clean.

Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-03-21 01:33:09 +01:00
Andreas Rheinhardt
a688f3c13c avcodec/internal: Move FF_CODEC_CAP_* to a new header codec_internal.h 
Also move FF_CODEC_TAGS_END as well as struct AVCodecDefault.
This reduces the amount of files that have to include internal.h
(which comes with quite a lot of indirect inclusions), as e.g.
most encoders don't need it. It is furthemore in preparation
for moving the private part of AVCodec out of the public codec.h.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-03-21 01:33:09 +01:00
Andreas Rheinhardt
569a0d0012 avcodec/msmpeg4dec: Make initializing VLCs thread-safe 
This automatically makes the remaining mpegvideo-decoders
(namely msmpeg4v[1-3], mss2, VC-1, VC-1 Image, WMV-[1-3]
and WMV-3 Image) init-threadsafe.
These were the last native codecs that were not init-threadsafe;
only wrappers for external libraries and for hardware accelerations
are now not init-threadsafe.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-02-18 20:29:45 +01:00
Andreas Rheinhardt
e2cf60f040 avcodec/msmpeg4.h: Move decoder-only parts to a new header 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-02-13 19:35:58 +01:00
Andreas Rheinhardt
78087da47c avcodec/wmv2.h: Move encoder- and decoder-only parts to new headers 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-02-13 15:28:17 +01:00
Andreas Rheinhardt
cc90478967 avcodec/wmv2: Split Wmv2Context into decoder and encoder context 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-02-13 15:27:48 +01:00
Andreas Rheinhardt
584f26db0d avcodec/wmv2: Move initializing abt_scantables to the decoder 
They are not used by the encoder at all.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-02-13 15:27:25 +01:00
Andreas Rheinhardt
7f6596c8bb avcodec/h263: Move decoding-only stuff to a new header h263dec.h 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-01-29 18:34:30 +01:00
Andreas Rheinhardt
b821a58741 avcodec/wmv2: Move ff_wmv2_add_mb() to the wmv2dec 
Only the decoder ever used it.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-01-04 16:28:55 +01:00
Andreas Rheinhardt
a247ac640d avcodec: Constify AVCodecs 
Given that the AVCodec.next pointer has now been removed, most of the
AVCodecs are not modified at all any more and can therefore be made
const (as this patch does); the only exceptions are the very few codecs
for external libraries that have a init_static_data callback.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
 2021-04-27 10:43:15 -03:00
Andreas Rheinhardt
fbb81ea2c6 avcodec/msmpeg4dec: Don't check for errors for complete VLCs 
This also affected other users of VLCs from msmpeg4dec, namely vc1_block
and wmv2dec.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
 2021-01-29 06:28:24 +01:00
Limin Wang
4b2863ff01 avcodec: add FF_CODEC_CAP_INIT_CLEANUP for all codecs which use ff_mpv_common_init() 
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
 2020-06-13 06:59:18 +08:00
Michael Niedermayer
e5ce105149 avcodec/wmv2dec: Check input bits vs. coded MBs 
Fixes: Timeout (94sec ->8sec)
Fixes: 14387/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMV2_fuzzer-5723546887651328

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-05-12 16:31:39 +02:00
Michael Niedermayer
bcf9d2a172 avcodec/wmv2dec: Check that the P frame secondary header fit in the input 
Fixes: Timeout (64sec ->2 sec)
Fixes: 14131/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMV2_fuzzer-5719879556005888

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-04-19 21:06:09 +02:00
Michael Niedermayer
d6f4341522 avcodec/wmv2dec: Skip I frame if its smaller than 1/8 of the minimal size 
Frames that small are not valid and of limited use for error concealment, while
being very computationally intensive to process.

Fixes: Timeout
Fixes: 11168/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMV2_fuzzer-5733782032744448

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-12-05 00:50:13 +01:00
Michael Niedermayer
0c88a5d3eb avcodec/wmv2dec: skip frames that have only skiped MBs 
This requires us to pre-parse the skip data, as we want to
detect this before allocating all the arrays

Fixes: Timeout
Fixes: 9708/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMV2_fuzzer-5729709861109760

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-09-03 00:01:32 +02:00
Michael Niedermayer
65e0a7c473 avcodec/wmv2dec: Check end of bitstream in parse_mb_skip() and ff_wmv2_decode_mb() 
Fixes: Timeout
Fixes: 3200/clusterfuzz-testcase-5750022136135680

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-11-18 11:57:57 +01:00
James Almer
7b550c5f84 Merge commit 'b3739599bd' 
* commit 'b3739599bd':
  lavc: Drop deprecated emu edge functionality

Merged-by: James Almer <jamrial@gmail.com>
 2017-10-23 16:04:31 -03:00
Derek Buitenhuis
e811ebcd9c Merge commit 'ca8c759173' 
* commit 'ca8c759173':
  intrax8: Remove mpegvideo dependency

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
 2016-05-07 21:41:27 +01:00
Derek Buitenhuis
f110c624b1 Merge commit '9fa888c028' 
* commit '9fa888c028':
  intrax8: Keep a reference to the decoder blocks

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
 2016-05-07 21:39:44 +01:00
Derek Buitenhuis
c59c792470 Merge commit 'c2084ffcbf' 
* commit 'c2084ffcbf':
  intrax8: Use the generic horizband function

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
 2016-05-07 21:37:32 +01:00
Derek Buitenhuis
123fef54cc Merge commit 'b1268e0f03' 
* commit 'b1268e0f03':
  intrax8: Pass macroblock coordinates to ff_intrax8_decode_picture

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
 2016-05-07 21:36:54 +01:00
Derek Buitenhuis
578fb5a27d Merge commit 'd0540fd021' 
* commit 'd0540fd021':
  intrax8: Pass macroblock size to ff_intrax8_common_init

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
 2016-05-07 21:35:20 +01:00
Derek Buitenhuis
52692eed61 Merge commit '1eaae7abb8' 
* commit '1eaae7abb8':
  intrax8: Reference the current AVCodecContext

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
 2016-04-24 12:34:58 +01:00
Derek Buitenhuis
50fa5715bc Merge commit '8072345e9f' 
* commit '8072345e9f':
  intrax8: Keep a reference to the GetBitContext reader

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
 2016-04-24 12:34:16 +01:00
Derek Buitenhuis
36dad14693 Merge commit 'eaeba6f241' 
* commit 'eaeba6f241':
  intrax8: Pass the output frame to the decoding function

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
 2016-04-24 12:32:38 +01:00
Derek Buitenhuis
e5c655b098 Merge commit '577393321c' 
* commit '577393321c':
  intrax8: Carry over the loopfilter value in ff_intrax8_decode_picture

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
 2016-04-24 12:31:14 +01:00
Derek Buitenhuis
83e0b1b1d7 Merge commit '68127e1bf8' 
* commit '68127e1bf8':
  intrax8: Keep a reference to the context idctdsp

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
 2016-04-24 12:19:53 +01:00
Derek Buitenhuis
61400a1dc7 Merge commit 'd909f43b5c' 
* commit 'd909f43b5c':
  vc1dec: wmv2dec: Validate ff_intrax8_common_init return value

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
 2016-04-17 19:32:26 +01:00
Derek Buitenhuis
909f5e7100 Merge commit '0c6a70873f' 
* commit '0c6a70873f':
  intrax8: Move error resilience out of intrax8

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
 2016-04-17 19:09:12 +01:00
Vittorio Giovara
ca8c759173 intrax8: Remove mpegvideo dependency 2016-03-29 13:41:09 +02:00
Vittorio Giovara
9fa888c028 intrax8: Keep a reference to the decoder blocks 2016-03-29 13:41:09 +02:00
Vittorio Giovara
c2084ffcbf intrax8: Use the generic horizband function 
This is assuming that intrax8 has no support for interlacing
Carry over lowdelay value in ff_intrax8_decode_picture.
 2016-03-29 13:41:09 +02:00
Vittorio Giovara
b1268e0f03 intrax8: Pass macroblock coordinates to ff_intrax8_decode_picture 
These values need to be updated with the last macroblock position,
so keep them as pointers.
 2016-03-29 13:41:09 +02:00
Vittorio Giovara
d0540fd021 intrax8: Pass macroblock size to ff_intrax8_common_init 
Helps in decoupling this code from mpegvideo.
 2016-03-29 13:41:09 +02:00
Vittorio Giovara
1eaae7abb8 intrax8: Reference the current AVCodecContext 
It will be needed to initialize BlockDSP in the next commit.
 2016-03-25 15:55:02 -04:00
Vittorio Giovara
8072345e9f intrax8: Keep a reference to the GetBitContext reader 
Helps in decoupling this code from mpegvideo.
 2016-03-25 15:54:29 -04:00
Vittorio Giovara
eaeba6f241 intrax8: Pass the output frame to the decoding function 
Helps in decoupling this code from mpegvideo.
 2016-03-25 15:53:02 -04:00
Vittorio Giovara
577393321c intrax8: Carry over the loopfilter value in ff_intrax8_decode_picture 
Helps in decoupling this code from mpegvideo.
 2016-03-25 15:52:44 -04:00
Vittorio Giovara
68127e1bf8 intrax8: Keep a reference to the context idctdsp 
Use it instead of the embedded mpegvideo one. Update init function
signature to load it directly from the callers.
 2016-03-25 15:52:24 -04:00
Vittorio Giovara
d909f43b5c vc1dec: wmv2dec: Validate ff_intrax8_common_init return value 2016-03-22 17:33:32 -04:00
Vittorio Giovara
0c6a70873f intrax8: Move error resilience out of intrax8 
The intrax8 decoding process does not imply any kind of error
resilience, and the only call present is more related to how mpegvideo
works rather than anything else.

Therefore have the parent decoders carry out er when actually needed.
 2016-03-22 16:51:09 -04:00
Michael Niedermayer
d9b56895b5 avcodec/mpegvideo: change bit_rate to 64bit 
32bit is not sufficient for all cases

Fixes: signal_sigabrt_7ffff6ac8cc9_686_cov_1897408623_microsoft_new_way_to_shove_mpeg2_in_asf.dvr_ms

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2015-09-02 21:10:36 +02:00
Ronald S. Bultje
2fb593dcb9 Put remaining pieces of CODEC_FLAG_EMU_EDGE under FF_API_EMU_EDGE. 
The amv one probably looks suspicious, but since it's an intra-only
codec, I couldn't possibly imagine what it would use the edge for,
and the vsynth fate result doesn't change, so it's probably OK.
 2015-08-28 14:40:59 -04:00
Michael Niedermayer
444e9874a7 Merge commit 'def97856de' 
* commit 'def97856de':
  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
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
8f7b022c8c Merge commit '6a85dfc830' 
* commit '6a85dfc830':
  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
d06dce21a4 Merge commit '42c8f92e2f' 
* commit '42c8f92e2f':
  wmv2: Return meaningful error codes

Conflicts:
	libavcodec/wmv2dec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2015-02-17 23:34:36 +01:00