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17 Commits

Author SHA1 Message Date
Andreas Rheinhardt
2934a4b9a5 Remove unnecessary avassert.h inclusions 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-07-22 15:02:30 +02:00
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
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
4f5bd6177d avcodec/dsd: Make initializing DSD tables thread-safe 
This automatically makes the DSD formats as well as DST and WavPack
init-threadsafe.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
 2020-12-08 17:51:48 +01:00
Michael Niedermayer
1679f23beb avcodec/dstdec: Replace AC overread check by sample rate check 
Real files do skip coding 0 bits at the end, thus this kind of check
does not work reliable.

Fixes: Ticket 8770
Fixes: dst-256fs44-6ch-refdstencoder.dff

The samplerate is specified in ISO/IEC 14496-3:2005(E) as one of 3 fixed
values, this also can be used to limit the duration and avoid the timeout

This reverts commit f6df99dba1.
 2020-07-02 17:14:31 +02:00
Michael Niedermayer
5727b1f13f avcodec/dstdec: Check sample rate 
Fixes: out of array access
Fixes: 20659/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DST_fuzzer-5735812071424000

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2020-05-10 09:55:57 +02:00
Michael Niedermayer
2d465a401d avcodec/dstdec: Fix integer overflow in read_table() 
Fixes: signed integer overflow: -16 * 134217879 cannot be represented in type 'int'
Fixes: 20492/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DST_fuzzer-5639509530378240

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2020-05-02 17:28:06 +02:00
Michael Niedermayer
34a6a36844 avcodec/dstdec: Use local channels variable 
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2020-02-14 16:29:23 +01:00
Michael Niedermayer
a76690c02b avcodec/dstdec: Use get_ur_golomb_jpegls() 
Fixes: shift exponent -4 is negative
Fixes: 17793/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DST_fuzzer-5766088435957760
Fixes: 18989/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DST_fuzzer-5175008116867072

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-12-15 01:01:22 +01:00
Michael Niedermayer
0c3e1b395b avcodec/dstdec: Check that AC probabilities are within range 
ISO/IEC 14496-3:2005(E): "Each entry of P_one[ ][ ] is in the range of 1 to
128, corresponding to a probability of 1/256 to 128/256 of the next error bit (bit E, See Figure 10.5)..."

Fixes: Timeout (42sec ->1sec)
Fixes: 18181/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DST_fuzzer-5736646250594304

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-11-09 15:57:34 +01:00
Michael Niedermayer
03ea8d8cd4 avcodec/dstdec: Check read_table() for failure 
Fixes: Timeout (too long -> 42sec)
Fixes: 18181/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DST_fuzzer-5736646250594304

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-11-09 15:57:33 +01:00
Michael Niedermayer
f6df99dba1 avcodec/dstdec: Check for input exhaustion 
Fixes: Timeout (239sec -> 16sec)
Fixes: 17811/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DST_fuzzer-5715508149616640

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-10-10 14:34:20 +02:00
Michael Niedermayer
7dc0943d4a avcodec/dstdec: Fix integer overflow in samples_per_frame computation 
Fixes: Timeout (? -> 2ms)
Fixes: 17616/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DST_fuzzer-5198057947267072

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-09-26 21:02:34 +02:00
Peter Ross
ad0d5d7516 avcodec/dstdec: use appropriate alignment 
this was a typo in my original dst decoder. there is no requirement for
64-byte alignment here. the change does not affect decoder performance.

Signed-off-by: Peter Ross <pross@xvid.org>
 2019-01-12 19:38:10 +11:00
Peter Ross
127564b3f1 dstdec: big-endian compatiblity 2019-01-11 23:43:37 +11:00
Michael Niedermayer
fd4a52e4da avcodec/dstdec: Fix "warning: initialization from incompatible pointer type [enabled by default]" 
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2016-05-15 12:21:15 +02:00
Peter Ross
86e493a6ff avcodec: add Direct Stream Transfer (DST) decoder 
Signed-off-by: Paul B Mahol <onemda@gmail.com>
 2016-05-15 01:01:45 +02:00