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Commit Graph

7 Commits

Author SHA1 Message Date
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
868368aa38 avcodec/cdtoons: Mark decoder as init-threadsafe
Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
2020-12-04 15:46:46 +01:00
Michael Niedermayer
4d701e9222 avcodec/cdtoons: Check sprite_offset is within the packet
Fixes: out of array read
Fixes: 20659/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CDTOONS_fuzzer-5754518731227136

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>
2020-05-12 21:39:13 +02:00
Andreas Rheinhardt
b6879b61df avcodec/cdtoons: Remove superfluous ;
The second ; in a double ;; is actually a null statement. It triggers
the typical declaration-after-statement compiler-warnings if it occurs
in the middle of several declarations (like here).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2020-02-28 19:40:05 +01:00
Michael Niedermayer
d2aff350bc avcodec/cdtoons: Fix off by 4 check on diff_size
Fixes: out of array read
Fixes: 20742/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CDTOONS_fuzzer-5738148607033344

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>
2020-02-21 21:42:11 +01:00
Michael Niedermayer
4c31db5a32 avcodec/cdtoons: Correct several end of data checks in cdtoons_render_sprite()
No testcases, found by code review when debuging issue found by oss-fuzz

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2020-02-21 21:42:11 +01:00
Alyssa Milburn
732d77dc50 avcodec: add cdtoons decoder
This adds a decoder for Broderbund's sprite-based QuickTime CDToons
codec, based on the decoder I wrote for ScummVM.

Signed-off-by: Alyssa Milburn <amilburn@zall.org>
2020-02-15 10:55:33 +01:00