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19 Commits

Author SHA1 Message Date
Andreas Rheinhardt
42ee3898c8 avcodec/ac3dec: Make decoders init-threadsafe 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
 2021-01-09 04:06:32 +01:00
Andreas Rheinhardt
10663312de avcodec/ac3dec: Check operations that can fail 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
 2021-01-09 04:06:32 +01:00
Michael Niedermayer
34f5a59ad5 avcodec: Set AV_CODEC_CAP_CHANNEL_CONF in more decoders 
Suggested-by: Paul B Mahol <onemda@gmail.com>
See: [FFmpeg-devel] [PATCH 1/3] avcodec/fastaudio: Check channels
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2020-11-28 00:41:51 +01:00
Michael Niedermayer
27c42d33bc avcodec/ac3dec_fixed: Remove some temporary variables from scale_coefs() 
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2020-06-08 00:21:15 +02:00
Michael Niedermayer
8e30502abe avcodec/ac3dec_fixed: Fix several invalid left shifts in scale_coefs() 
Fixes: left shift of negative value -14336
Fixes: 20298/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AC3_FIXED_fuzzer-5675484201615360

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2020-04-16 00:56:49 +02:00
Michael Niedermayer
a1f38c7589 avcodec/ac3dec_fixed: Fix integer overflow in scale_coefs() 
Fixes: runtime error: signed integer overflow: 2147483520 + 128 cannot be represented in type 'int'
Fixes: 4800/clusterfuzz-testcase-minimized-6110372403609600

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-01-15 19:55:22 +01:00
Michael Niedermayer
4e3ab1a5c1 avcodec/ac3dec_fixed: Fix multiple runtime error: signed integer overflow: -39271008 * 59 cannot be represented in type 'int' 
Fixes: 2113/clusterfuzz-testcase-minimized-6510704959946752

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-06-08 17:37:16 +02:00
Michael Niedermayer
136ce8baa4 avcodec/ac3dec_fixed: Fix runtime error: left shift of 419 by 23 places cannot be represented in type 'int' 
Fixes: 1352/clusterfuzz-testcase-minimized-5757565017260032

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-06-04 13:04:46 +02:00
Clément Bœsch
e39d4ff150 Merge commit '43717469f9daa402f6acb48997255827a56034e9' 
* commit '43717469f9daa402f6acb48997255827a56034e9':
  ac3dsp: Reverse matrix in/out order in downmix()

Merged-by: Clément Bœsch <u@pkh.me>
 2017-03-22 11:29:46 +01:00
Jonathan Campbell
d5d474aea5 avcodec/ac3dec: add consistent noise generation option. 
use av_lfg_init_from_data() to seed AC-3 dithering from the AC-3 frame
data to make it consistent given the same AC-3 frame, if option is set.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-01-22 02:29:16 +01:00
Clément Bœsch
fb99ef0bd3 avcodec: use AV_OPT_TYPE_BOOL in a bunch of places 2015-12-04 15:37:05 +01:00
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
Andreas Cadhalpun
7b05b5093e ac3dec_fixed: always use the USE_FIXED=1 variant of the AC3DecodeContext 
The AC3DecodeContext has a float (USE_FIXED=0) and an integer
(USE_FIXED=1) variant, both of which can be present in the same binary.
This is not only very confusing, but it also breaks horribly, when one
variant is used by code expecting the other.

This currently happens, because eac3dec.c is only compiled for the float
variant, but also used from ac3dec_fixed.c, which uses the integer
variant.

The result is memory corruption, leading to crashes.

So compile eac3dec.c once for each variant and adapt it, so that it
works with the integer variant.

A loss of precission and scaling bug has been fixed by the committer
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-03-14 04:27:06 +01:00
Michael Niedermayer
5a6dd925cb avcodec/ac3dec_fixed: remove unused arrays 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-09-08 16:59:16 +02:00
Reimar Döffinger
3bc5d2a064 ac3dec_fixed: add missing "static const". 
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
 2014-08-31 10:25:36 +02:00
Jean-Francois Thibert
12df9b9a15 Improved AC3 decoder level support (heavy drc, dialnorm) 
Added support for AC3 heavy dynamic range compression used
to restrict the output range and added a setting to specify
the output target level and use the dialog normalization
field to apply it in the digital domain.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-08-27 14:31:39 +02:00
Michael Niedermayer
3b37f22861 avcodec/ac3dec_fixed: add missingAVprefix to CODEC_ID 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Nedeljko Babic <nbabic@mips.com>
 2014-04-01 19:58:51 +02:00
Michael Niedermayer
b219142921 avcodec/ac3: rename identifier used to select the fixed point variant 
the CONFIG_ prefix is used by configure, using it for other things
is potentially confusing to the reader

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Nedeljko Babic <nbabic@mips.com>
 2014-04-01 19:58:31 +02:00
Nedeljko Babic
696e34a6e1 libavcodec: Implementation of AC3 fixedpoint decoder 
Signed-off-by: Nedeljko Babic <nbabic@mips.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-01 19:01:57 +02:00