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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>
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Signed-off-by: James Almer <jamrial@gmail.com>
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Normally no two codecs with FF_CODEC_CAP_INIT_THREADSAFE unset
can be initialized at the same time: a mutex in avcodec_open2()
ensures this. This implies that one cannot simply open a codec
with a non-threadsafe init-function from the init function of
a codec whose own init function is not threadsafe either as the child
codec couldn't acquire the lock.
ff_codec_open2_recursive() exists to get around this limitation:
If the init function of the child codec to be initialized is not
thread-safe, the mutex is unlocked, the child is initialized and
the mutex is locked again. This of course has as a prerequisite that
the parent AVCodecContext actually holds the lock, i.e. that the
parent codec's init function is not thread-safe. If it is, then one
can (and has to) just use avcodec_open2() directly (if the child's
init function is not thread-safe, then avcodec_open2() will have to
acquire the mutex itself (and potentially wait for it), so that it is
perfectly fine for an otherwise thread-safe init function to open
a codec with a potentially non-thread-safe init function via
avcodec_open2()).
Yet several of the users of ff_codec_open2_recursive() have the
FF_CODEC_CAP_INIT_THREADSAFE flag set; this only worked because
all the child codecs' init functions were thread-safe themselves
so that ff_codec_open2_recursive() didn't touch the mutex at all.
But of course the real solution to this is to directly use
avcodec_open2().
Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
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Fixes: Timeout (47sec -> 35msec)
Fixes: 23375/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TDSC_fuzzer-5633949497032704
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Fixes: out of array access
Fixes: crash.asf
Found-by: anton listov <greyfarn7@yandex.ru>
Reviewed-by: anton listov <greyfarn7@yandex.ru>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Use 0, which selects the alignment automatically.
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Fixes the tdsc FATE-test.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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* commit '7bf8db4db61eb09fac00eb665d8ec58de8817da6':
tdsc: use the new decoding API
Merged-by: Clément Bœsch <u@pkh.me>
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Most decoders return the amount of data used.
This is more consistent
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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* commit '41ed7ab45fc693f7d7fc35664c0233f4c32d69bb':
cosmetics: Fix spelling mistakes
Merged-by: Clément Bœsch <u@pkh.me>
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Signed-off-by: Diego Biurrun <diego@biurrun.de>
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* 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>
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Express bitfields more simply.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Fixes assertion failure and race conditions
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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* commit '247e370e2a913db52ca079b347a174c8d393b171':
TDSC decoder
Conflicts:
Changelog
doc/general.texi
libavcodec/Makefile
libavcodec/allcodecs.c
libavcodec/version.h
tests/fate/video.mak
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
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