Do not rely on including it indirectly through get_bits.h->avcodec.h

This file uses definitions from it, but relies on an indirect include
through get_bits.h

Include all required headers explicitly, avoid avcodec.h dependency.

Include only the headers that are actually needed.

This will allow to avoid #including the entire avcodec.h in some places.

Simple test results:

Command:
./ffmpeg -y -hwaccel videotoolbox -hwaccel_output_format videotoolbox_vld \
  -i test.mp4 -an -c:v h264_videotoolbox -benchmark out.mp4

Before:
frame= 1221 fps= 66 q=-0.0 Lsize=    3144kB time=00:00:20.33 bitrate=1266.6kbits/s dup=4 drop=0 speed= 1.1x
bench: utime=2.714s stime=1.218s rtime=18.574s

After:
frame= 1221 fps=137 q=-0.0 Lsize=    3144kB time=00:00:20.33 bitrate=1266.4kbits/s dup=4 drop=0 speed=2.28x
bench: utime=1.450s stime=1.440s rtime=8.924s

It has limited usecase since there is no video filter support, so
a log message is added to notify the user.
Reviewed-by: Steven Liu <liuqi05@kuaishou.com>

load_functions() did not load the device-level functions.

They are private fields, no reason to have them exposed in a public header.
Signed-off-by: James Almer <jamrial@gmail.com>

It should not be accessed from outside of libavformat.
Signed-off-by: James Almer <jamrial@gmail.com>

libavdevice needs it.
Signed-off-by: James Almer <jamrial@gmail.com>

CID 1485003: Memory - illegal accesses (UNINIT)
Using uninitialized value "sd".
Signed-off-by: Ting Fu <ting.fu@intel.com>

CID 1485004: Uninitialized variables (UNINIT)
Using uninitialized value "x" when calling "*pixel_belongs_to_region".
Signed-off-by: Ting Fu <ting.fu@intel.com>

Add 'srt_streamid' option as an alias for 'streamid'.
Signed-off-by: Marton Balint <cus@passwd.hu>

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

There is no good use case for out of order delivery of data. For live
streaming with TSBPD enabled by default, the receiver get data in order
based on the timestamps. However, if TSBPD is disabled, the data can
be delivered out of order.
Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Valerii Zapodovnikov <val.zapod.vz@gmail.com>
Signed-off-by: Marton Balint <cus@passwd.hu>

This reverts commit d6d407d2.
Hack not needed after a2b1dd0c.
Will fix #7480 and #8904.
This will include e.g. CODECS="hvc1.2.4.L123.B0" into m3u8.
Signed-off-by: Valerii Zapodovnikov <val.zapod.vz@gmail.com>

Suggested-by: ffmpeg@fb.com
Reviewed-by: Ronald S. Bultje <rsbultje@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

Fixes: floating point division by 0
Fixes: Ticket 8269
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes: floating point division by 0
Fixes: undefined behavior in handling NaN
Fixes: Ticket 8268
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes: CID1476303 Bad bit shift operation
Fixes: 34871/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DPX_fuzzer-6331163028357120
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes: Infinite loop
Fixes: 34751/clusterfuzz-testcase-minimized-ffmpeg_dem_RPL_fuzzer-5439330800762880
Fixes: 34774/clusterfuzz-testcase-minimized-ffmpeg_dem_RPL_fuzzer-5851571660390400

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

Fixes: invalid shifts
Fixes: Ticket 8221
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Instead return the dictionary in the state it is at the time the error
occurred. This is more in line with the description of this parameter
and allows to notify the user of unrecognized options if an error
happens lateron (which might very well be due to e.g. misspelled
options).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Besides being unnecessary it is also safer: If the error for an
unrecognized option were triggered (which seems to be impossible right
now), it might be that the stream whose codecpar is accessed is NULL.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

The user should not rely on all options always being recognized
(in particular not on error).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

It is no longer necessary now that ff_frame_thread_encoder_init()
no longer receives an options dictionary.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

av_dict_copy() returned void when this code was written.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

In case the underlying AVCodec has no private class, the private data
of both the main as well as each worker AVCodecContext is just zeroed
(the codec's init function has not been called on any of them and
without a private class there is no way to legitimately set anything
before the aforementioned init function).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

avcodec_open2() allows to provide options via an AVDictionary;
but it is also allowed to set options by simply setting the value
of the AVCodecContext or via the AVOptions API if the codec has
a private class. Any options provided via an AVDictionary have already
been applied before ff_frame_thread_init(), so in order to copy
all the options from the main AVCodecContext and its private context,
it is enough to av_opt_copy() these options.

The current code does this, but it does more: It also copies the
user-provided AVDictionary and uses it for the initialization of
each of the worker-AVCodecContexts. This is completely unnecessary,
because said options have already been copied from the main context.

Furthermore, these options were also examined to decide if frame
threading should be used for huffman encoding in case this would incur
nondeterminism. This is wrong, because options not set via
an AVDictionary are ignored. Instead inspect the values stored in the
contexts directly. (In order to maintain the current behaviour, the
default value of the "non_deterministic" option has been changed to false,
because the absence of an entry with said key in the AVDictionary
had the consequence of disallowing nondeterminism.)

Finally, the AVDictionary has been removed from the signature of
ff_frame_thread_encoder_init().
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Up until now, ff_alloc_packet2() has a min_size parameter:
It is supposed to be a lower bound on the final size of the packet
to allocate. If it is not too far from the upper bound (namely,
if it is at least half the upper bound), then ff_alloc_packet2()
already allocates the final, already refcounted packet; if it is
not, then the packet is not refcounted and its data only points to
a buffer owned by the AVCodecContext (in this case, the packet will
be made refcounted in encode_simple_internal() in libavcodec/encode.c).
The goal of this was to avoid data copies and intermediate buffers
if one has a precise lower bound.

Yet those encoders for which precise lower bounds exist have recently
been switched to ff_get_encode_buffer() (which automatically allocates
final buffers), leaving only two encoders to actually set the min_size
to something else than zero (namely aliaspixenc and hapenc). Both of
these encoders use a very low lower bound that is not helpful in any
nontrivial case.

This commit therefore removes the min_size parameter as well as the
codepath in ff_alloc_packet2() for the allocation of final buffers.
Furthermore, the function has been renamed to ff_alloc_packet() and
moved to encode.h alongside ff_get_encode_buffer().
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>