Fixes #7650.

Also fixes QP going out of range when modified by the quant factor/offset
values, and clarifies the QP behaviour for >8-bit modes.

Also fixes QP going out of range when modified by the quant factor/offset
values.

Allow setting the mode explicitly, and try to make a sensible choice
given the available parameters if not.

Following b8c45bbc they contain allocated
unit arrays which will get leaked.  These operations were inconsistently
applied and never actually needed (the old uninit left them in the correct
state), so just drop them entirely.

Currently, a fragment's unit array is constantly reallocated during
splitting of a packet. This commit changes this: One can keep the units
array by distinguishing between the number of allocated and the number
of valid units in the units array.

The more units a packet is split into, the bigger the benefit.
So MPEG-2 benefits the most; for a video coming from an NTSC-DVD
(usually 32 units per frame) the average cost of cbs_insert_unit (for a
single unit) went down from 6717 decicycles to 450 decicycles (based
upon 10 runs with 4194304 runs each); if each packet consists of only
one unit, it went down from 2425 to 448; for a H.264 video where most
packets contain nine units, it went from 4431 to 450.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@googlemail.com>

This is in preparation for another patch that will stop needless
reallocations of the unit array.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@googlemail.com>

Improves speed of the testcase by about a factor of 10

Fixes: Timeout
Fixes: 13132/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WCMV_fuzzer-5664190616829952
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Speeds up error cases
Fixes: 13132/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WCMV_fuzzer-5664190616829952

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: Michael Niedermayer <michael@niedermayer.cc>

This speeds up the testcase by a factor of 4

Fixes: Timeout
Fixes: 13100/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMV2_fuzzer-5767533905313792

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes: 12937/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_THP_fuzzer-5714945346371584

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes: Timeout
Fixes: 12967/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ARBC_fuzzer-5639021454163968

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: Michael Niedermayer <michael@niedermayer.cc>

Added comments regarding usage of certain movflags in streaming mode.

The master playlist can be published at a specified interval with this option

Unifying the way the EBML unknown length is signaled, rather than using two
incompatible values. UINT64_MAX cannot be read as a valid EBML length with the
current code.
Co-authored-by: Steve Lhomme <robux4@ycbcr.xyz>
Co-authored-by: Dale Curtis <dalecurtis@chromium.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

The function typedefs we were using are only present when using the
dynamic loader, which means compilation breaks for code directly
using the cuda SDK.

To fix this, let's just duplicate the function typedefs locally.
These are not going to change.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Improves speed from 5.4 to 4.2 seconds
Fixes: 13149/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PGM_fuzzer-5760833622114304
Fixes: 13166/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PGMYUV_fuzzer-5763216322330624

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegReviewed-by: Lauri Kasanen <cand@gmx.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

The frame is not needed that early so obtaining it later avoids
the costly operation in case other checks fail.

Fixes: Timeout (14sec -> 4sec)
Fixes: 13140/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ZMBV_fuzzer-5738330308739072

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegReviewed-by: Tomas Härdin <tjoppen@acc.umu.se>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes: Timeout (78 sec -> 15 millisec)
Fixes: 13147/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JV_fuzzer-5727107827630080

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: Michael Niedermayer <michael@niedermayer.cc>

fixes: https://trac.ffmpeg.org/ticket/6713Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

It is no longer interesting.
Signed-off-by: Lou Logan <lou@lrcd.com>

Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Marton Balint <cus@passwd.hu>

This way re-initializations properly update end_pts, enabling
sub2video_heartbeat to call sub2video_update as expected to re-init
the sub2video AVFrame's contents and to feed a frame into the filter
chain.

This then fixes memory usage ballooning due to framesync waiting
for secondary input in case of no actual subtitle samples being present
for a while in source after a re-init occurs.

This was missed in d5d699abSigned-off-by: James Almer <jamrial@gmail.com>

This was missed in d5d699abSigned-off-by: James Almer <jamrial@gmail.com>

This was missed in d5d699abSigned-off-by: James Almer <jamrial@gmail.com>

Fixes: runtime error: signed integer overflow: 2147421862 - -33624063 cannot be represented in type 'int'
Fixes: 12885/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_H264_fuzzer-5733516975800320

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: Michael Niedermayer <michael@niedermayer.cc>