avfilter/af_dcshift: add direct path

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avfilter/vf_overlay: Restore shorthand option order

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

libavcodec/mips: Improve avc idct8 msa function

Replace memset call with msa stores.

Signed-off-by: Kaustubh Raste <kaustubh.raste@imgtec.com>
Reviewed-by: Manojkumar Bhosale <Manojkumar.Bhosale@imgtec.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avfilter/lavfutils: remove usage of AVStream->codec

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

avformat/hlsenc: Added configuration to override HTTP User-Agent

Signed-off-by: Karthick J <kjeyapal@akamai.com>
Signed-off-by: Steven Liu <lq@onvideo.cn>

build: consistent spacing between lists (cosmetics)

avfilter/avf_avectorscope: fix mistake in previous commit

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avfilter/avf_avectorscope: add possibility to auto zoom

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avfilter: add despill filter

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avcodec: add AV_HWACCEL_CODEC_CAP_EXPERIMENTAL flag

This flag replaces the deprecated, non-prefixed HWACCEL_CODEC_CAP_EXPERIMENTAL
one.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>

avfilter/vf_fftfilt: make it possible to evaluate expressions per frame

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avfilter/vf_fftfilt: add generic timeline support

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avfilter/vf_fftfilt: add support for more pixel formats

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avfilter/vf_fftfilt: cache rdft contexts

Signed-off-by: Paul B Mahol <onemda@gmail.com>

lavd: drop QTKit indev

QTKit has been deprecated in favor of AVFoundation for years, and we
have an avfoundation input device.

See https://developer.apple.com/documentation/qtkit

avfilter/vf_datascope: make it possible for output window to automatically change position

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avformat/flvdec: Set need_context_update when setting the initial extradata

Fixes ticket 6398.

Debugged with the help of James Almer and Hendrik Leppkes.

avfilter/vf_datascope: add timeline support to pixscope and oscilloscope

Signed-off-by: Paul B Mahol <onemda@gmail.com>

doc/filters: add missing '' for blend example

Signed-off-by: Paul B Mahol <onemda@gmail.com>

doc/filters: add one more blend example

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avfilter/vf_displace: add mirror edge mode

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avfilter/vf_displace: remove useless requirement that SAR matches between input streams

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avfilter/vf_subtitles: enable processing of alpha channel

Fixes #6605.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

doc/filters.texi: Add default values to vf_vaguedenoiser options

lavd: drop disabled v4l code

This code is disabled since 2012. V4L1 was dropped from the kernel more
than 10 years ago.

avcodec/dirac_vlc: Fix invalid shift in ff_dirac_golomb_read_32bit()

Fixes: runtime error: shift exponent 64 is too large for 64-bit type 'residual' (aka 'unsigned long')
Fixes: 2838/clusterfuzz-testcase-minimized-6260066086813696
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avcodec/dirac_dwt: Fix multiple overflows in 9/7 lifting

Fixes: runtime error: signed integer overflow: 1073901567 + 1073901567 cannot be represented in type 'int'
Fixes: 3124/clusterfuzz-testcase-minimized-454643435752652
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avcodec/diracdec: Fix integer overflow in INTRA_DC_PRED()

Fixes: runtime error: signed integer overflow: 1168175789 + 1168178473 cannot be represented in type 'int'
Fixes: 3081/clusterfuzz-testcase-minimized-4807564879462400
Fixes: 2844/clusterfuzz-testcase-minimized-5561715838156800
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

build: drop unused sndio_h and asoundlib_h

build: make sndio part of the autodetected libraries

sndio is already autodetected, this commit makes sure
--disable-autodetect actually disable it unless --enable-sndio is
specified.

build: make jack part of the autodetected libraries

jack is already autodetected, this commit makes sure
--disable-autodetect actually disable it unless --enable-jack is
specified.

build: make alsa part of the autodetected libraries

alsa libs are already autodetected, this commit makes sure
--disable-autodetect actually disable it unless --enable-alsa is
specified.

build: make sure a disabled autodetect still pick the libc's iconv

build: add --disable-autodetect switch

build: simplify weak-enabling of autodetected libraries

build: remove vda_framework from enable_weak

vda_framework is already pulled by the weakly enabled vda and
videotoolbox.

build: replace use of HAVE_SDL2 with existing CONFIG_SDL2

There is no need for duplication.

build: treat sdl2 like other autodetected libraries

build: isolate sdl-to-sdl2 aliasing

This simplifies incoming SDL related changes by removing potential
mismatching states of sdl and sdl2 variables. Since a component can have
all kind of states (such as unset, enabled, disabled or requested),
keeping these variables in sync manually in random places is not robust.

build: treat securetransport and schannel like other autodetected libraries

build: treat libxcb like other autodetected libraries

build: treat iconv like other autodetected libraries

build: treat crystalhd like other hwaccels

build: group z libs with other autodetected libraries

avcodec/nvenc: always output picture timing SEI

Interlaced encoding profits from it, or might even need it in some
players.
No harm in enabling it unconditionally.

Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>

avcodec/internal: move FF_QSCALE_TYPE defines from avcodec.h

Their use in the public header is deprecated and will be removed, but
they are still needed by some codecs at least as long as qscale related
deprecated fields in the AVFrame struct remain in the tree.

avfilter: remove duplicate and disabled trace log function

It's already defined and actually enabled depending on compiler options
elsewhere.

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

lavf: make avio_read_partial() public

Main use-case is proxying avio through a foreign I/O layer and a custom
AVIO context, without losing latency and performance characteristics.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Merged from Libav commit 173b56218f39c64.

avformat/avio: update avio_alloc_context() doxy

It must be freed using avio_context_free() starting with commit
b12e4d3bb8df994f042ff1216fb8de2b967aab9e.

Found-by: Ronald S. Bultje <rsbultje@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

avformat/dash:add copyright to dash.c

Signed-off-by: Steven Liu <lq@chinaffmpeg.org>

avcodec/nvenc: only push cuda context on encoder close if encoder exists

Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>

avcodec/nvenc: add support for specifying entropy coding mode

Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>

Use the new AVIOContext destructor.

(cherry picked from commit 6f554521afdf7ab4edbfaa9536660a1dca946b19)
Signed-off-by: James Almer <jamrial@gmail.com>

avio: add a destructor for AVIOContext

Before this commit, AVIOContext is to be freed with a plain av_free(),
which prevents us from adding any deeper structure to it.

(cherry picked from commit 99684f3ae752fc8bfb44a2dd1482f8d7a3d8536d)
Signed-off-by: James Almer <jamrial@gmail.com>

avformat/dash: move reused API to common file and header file

move from dashenc, move DASHTmplId and dash_fill_tmpl_params to
dash.c, they will be used by dash demuxer and dash muxer.

v2 fixed:
1. rename common file from dashcomm.* to dash.*
Suggested-by: Hendrik Leppkes <h.leppkes@gmail.com>
v3 fixed:
1. rename header file pre defined
2. add ff_ prefix for the internal API
Suggested-by: James Almer <jamrial@gmail.com>
Suggested-by: Timo Rothenpieler <timo@rothenpieler.org>
Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Steven Liu <lq@onvideo.cn>

avformat/mxfdec: Fix Sign error in mxf_read_primer_pack()

Fixes: 20170829B.mxf
Co-Author: 张洪亮(望初)" <wangchu.zhl@alibaba-inc.com>
Found-by: Xiaohei and Wangchu from Alibaba Security Team
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avformat/mxfdec: Fix DoS issues in mxf_read_index_entry_array()

Fixes: 20170829A.mxf
Co-Author: 张洪亮(望初)" <wangchu.zhl@alibaba-inc.com>
Found-by: Xiaohei and Wangchu from Alibaba Security Team
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avformat/nsvdec: Fix DoS due to lack of eof check in nsvs_file_offset loop.

Fixes: 20170829.nsv
Co-Author: 张洪亮(望初)" <wangchu.zhl@alibaba-inc.com>
Found-by: Xiaohei and Wangchu from Alibaba Security Team
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avocdec/libopus: fix typo

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

avformat/mov: prevent duplication of first fragment's ctts_data

MP4 files with fragments might have the first moof box that is mentioned
in a fragment index before the first mdat box. Since it is then already
parsed by mov_read_header, we have to make sure that mov_switch_root
will not parse it again when seeking by setting the headers_read flag in
the index. Parsing it a second time would cause the ctts_data array to
receive a second copy of the information from the trun box, leading to
wrong PTS values for the second and following fragments in presence of
B-frames.

Fixes ticket 6560.

Signed-off-by: Daniel Glöckner <daniel-gl@gmx.net>
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avformat/mov: Bail when invalid sample data is present.

ctts data in ffmpeg relies on the index entries array to be 1:1
with samples... yet sc->sample_count can be read directly from
the 'stsz' box and index entries are only generated if a chunk
count has been read from 'stco' box.

Ensure that if sc->sample_count > 0, sc->chunk_count is too as
a basic sanity check. Additionally we need to check that after
the index is built we have the right number of entries, so we
also check in mov_read_trun() that sc->sample_count ==
st->nb_index_entries.

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

avformat/concatdec: add fallback for calculating file duration

If a file does not have a known duration, this leads to the timestamps
starting over for the next file, causing non-monotonic timestamps.
To prevent this, track the duration during demuxing and use it to
determine the current file duration before opening the next file.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

avcodec/fits: add missing header includes

Fixes checkheaders.

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

fate: add tests for some video source filters

Adds FATE tests for the previously untested allrgb, allyuv, rgbtestsrc,
smptebars, smptehdbars and yuvtestsrc filters.

Also adds a test for testsrc2 filter with rgb+alpha.

Tested-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Tobias Rapp <t.rapp@noa-archive.com>

fate/flvenc: set bitexact output format flag explicitly

Using the encoder flags to set the muxer in bitexact mode is deprecated.

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

ffmpeg_opt: add proper deprecation guards to lowres code

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

fate/pixlet : add test for rgb

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

avfilter/vf_mcdeint: remove usage of deprecated AVCodecContext.me_method

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

avfilter/af_adelay: remove requirement that at least one delay should be provided

Such requirement is not necessary and code works without it just fine.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

postproc: remove usage of deprecated QP_STORE_T define

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

avfilter/vf_mcdeint: free the AVCodecContext struct properly

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

fate: stop using deprecated filter syntax in hls tests

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

fate: remove usage of deprecated AVCodecContext.me_method in vsynth snow tests

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

configure: require pkg-config for libvmaf

This patch makes the libvmaf filter use pkg-config to detect
and link to libvmaf.

Signed-off-by: Ashish Singh <ashk43712@gmail.com>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

avfilter/vf_libvmaf: fix pre convert to framesync2 bugs

Hi, it fixes the errors while converting to framesync2.
libvmaf was changed recently, double *score variable is removed in the new
version since it's not used anywhere. This patch fixes all the warnings and
segmentation faults.

Signed-off-by: Ashish Singh <ashk43712@gmail.com>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

avcodec/codec_desc: make FITS description longer

Signed-off-by: Paul B Mahol <onemda@gmail.com>

avfilter/vf_lut2: add framesync options

Also stop leaking memory.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

FATE: Add FITS tests

Signed-off-by: Paras Chadha <paraschadha18@gmail.com>

Add FITS Muxer

Signed-off-by: Paras Chadha <paraschadha18@gmail.com>

Add FITS Encoder

Signed-off-by: Paras Chadha <paraschadha18@gmail.com>

Add FITS Demuxer

Signed-off-by: Paras Chadha <paraschadha18@gmail.com>

Add FITS Decoder

Signed-off-by: Paras Chadha <paraschadha18@gmail.com>

compat/cuda/ptx2c: strip CR from each line

Windows nvcc + cl.exe produce a .ctx file with CR+LF newlines which
need to be stripped to work with gcc.

Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>

configure: add support for libnpp* from cuda sdk 9

Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>

avformat/mxfenc: Replace literal numbers by named enum values.

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

avcodec/snowdec: Fix integer overflow in decode_subband_slice_buffered()

Fixes: runtime error: signed integer overflow: 267 * 8388608 cannot be represented in type 'int'
Fixes: 2743/clusterfuzz-testcase-minimized-5820652076400640
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avcodec/hevc_ps: Fix undefined shift in pcm code

Fixes: runtime error: shift exponent -1 is negative
Fixes: 3091/clusterfuzz-testcase-minimized-6229767969832960
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avcodec/h264idct_template: Fix integer overflow in ff_h264_idct8_add()

Fixes: 2891/clusterfuzz-testcase-minimized-5881795457318912
Fixes: runtime error: signed integer overflow: 1551827968 - -775913984 cannot be represented in type 'int'
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avformat/mxfenc: Check that the video codec in D-10 is MPEG-2

Others do not work, but nothing rejects them prior to this patch if the
parameters otherwise match

Reviewed-by: Matthieu Bouron <matthieu.bouron@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

lavfi: bump minor version after change in options.

doc/filters: document framesync options.

lavfi: remove dualinput.

vf_ssim: convert to framesync2.

lavfi/vf_psnr: convert to framesync2.

lavfi/vf_paletteuse: convert to framesync2.

lavfi/vf_lut3d: convert to framesync2.

lavfi/vf_libvmaf: convert to framesync2.

After this commit, the code compiles, but on my setup it
segfaults before and after. It also prints the very worrying
warning:

src/libavfilter/vf_libvmaf.c:161:66: warning: passing argument 4 of ‘compute_vmaf’ from incompatible pointer type [-Wincompatible-pointer-types]
/tmp/i/include/libvmaf.h:26:8: note: expected ‘int (*)(float *, float *, float *, int,  void *)’ but argument is of type ‘int (*)(float *, float *, float *, int,  double *, void *)’

==12116== Thread 6:
==12116== Conditional jump or move depends on uninitialised value(s)
==12116==    at 0x526D432: cons_ (ocval.h:1188)
==12116==    by 0x526D432: GenericIT (ocval.h:1119)
==12116==    by 0x526D432: OC::TranslateForNumPyClassesToArray(OC::Val&) (pickleloader.h:92)
==12116==    by 0x5211F5D: loads (pickleloader.h:566)
==12116==    by 0x5211F5D: LoadValFromArray (chooseser.h:290)
==12116==    by 0x5211F5D: LoadValFromFile (chooseser.h:405)
==12116==    by 0x5211F5D: _read_and_assert_model(char const*, OC::Val&, OC::Val&, OC::Val&, OC::Val&, OC::Val&, OC::Val&) (vmaf.cpp:77)
==12116==    by 0x5212B0F: VmafRunner::run(Asset, int (*)(float*, float*, float*, int, void*), void*, bool, bool, bool, bool, bool) (vmaf.cpp:149)
==12116==    by 0x52165B6: RunVmaf(char const*, int, int, int (*)(float*, float*, float*, int, void*), void*, char const*, char const*, char const*, bool, bool, bool, bool, bool, char const*) (vmaf.cpp:645)
==12116==    by 0x518AFFF: compute_vmaf_score (vf_libvmaf.c:161)
==12116==    by 0x518AFFF: call_vmaf (vf_libvmaf.c:170)
==12116==    by 0x7967493: start_thread (pthread_create.c:333)
==12116==    by 0x7F69A8E: clone (clone.S:97)
==12116==
==12116== Conditional jump or move depends on uninitialised value(s)
==12116==    at 0x526D432: cons_ (ocval.h:1188)
==12116==    by 0x526D432: GenericIT (ocval.h:1119)
==12116==    by 0x526D432: OC::TranslateForNumPyClassesToArray(OC::Val&) (pickleloader.h:92)
==12116==    by 0x526D50D: OC::TranslateForNumPyClassesToArray(OC::Val&) (pickleloader.h:94)
==12116==    by 0x5211F5D: loads (pickleloader.h:566)
==12116==    by 0x5211F5D: LoadValFromArray (chooseser.h:290)
==12116==    by 0x5211F5D: LoadValFromFile (chooseser.h:405)
==12116==    by 0x5211F5D: _read_and_assert_model(char const*, OC::Val&, OC::Val&, OC::Val&, OC::Val&, OC::Val&, OC::Val&) (vmaf.cpp:77)
==12116==    by 0x5212B0F: VmafRunner::run(Asset, int (*)(float*, float*, float*, int, void*), void*, bool, bool, bool, bool, bool) (vmaf.cpp:149)
==12116==    by 0x52165B6: RunVmaf(char const*, int, int, int (*)(float*, float*, float*, int, void*), void*, char const*, char const*, char const*, bool, bool, bool, bool, bool, char const*) (vmaf.cpp:645)
==12116==    by 0x518AFFF: compute_vmaf_score (vf_libvmaf.c:161)
==12116==    by 0x518AFFF: call_vmaf (vf_libvmaf.c:170)
==12116==    by 0x7967493: start_thread (pthread_create.c:333)
==12116==    by 0x7F69A8E: clone (clone.S:97)
==12116==
==12116== Conditional jump or move depends on uninitialised value(s)
==12116==    at 0x526D432: cons_ (ocval.h:1188)
==12116==    by 0x526D432: GenericIT (ocval.h:1119)
==12116==    by 0x526D432: OC::TranslateForNumPyClassesToArray(OC::Val&) (pickleloader.h:92)
==12116==    by 0x526D50D: OC::TranslateForNumPyClassesToArray(OC::Val&) (pickleloader.h:94)
==12116==    by 0x526D50D: OC::TranslateForNumPyClassesToArray(OC::Val&) (pickleloader.h:94)
==12116==    by 0x5211F5D: loads (pickleloader.h:566)
==12116==    by 0x5211F5D: LoadValFromArray (chooseser.h:290)
==12116==    by 0x5211F5D: LoadValFromFile (chooseser.h:405)
==12116==    by 0x5211F5D: _read_and_assert_model(char const*, OC::Val&, OC::Val&, OC::Val&, OC::Val&, OC::Val&, OC::Val&) (vmaf.cpp:77)
==12116==    by 0x5212B0F: VmafRunner::run(Asset, int (*)(float*, float*, float*, int, void*), void*, bool, bool, bool, bool, bool) (vmaf.cpp:149)
==12116==    by 0x52165B6: RunVmaf(char const*, int, int, int (*)(float*, float*, float*, int, void*), void*, char const*, char const*, char const*, bool, bool, bool, bool, bool, char const*) (vmaf.cpp:645)
==12116==    by 0x518AFFF: compute_vmaf_score (vf_libvmaf.c:161)
==12116==    by 0x518AFFF: call_vmaf (vf_libvmaf.c:170)
==12116==    by 0x7967493: start_thread (pthread_create.c:333)
==12116==    by 0x7F69A8E: clone (clone.S:97)
==12116==
==12116== Use of uninitialised value of size 8
==12116==    at 0x518AC79: read_frame_8bit (vf_libvmaf.c:147)
==12116==    by 0x52AB5E8: combo (combo.c:149)
==12116==    by 0x5212E95: VmafRunner::run(Asset, int (*)(float*, float*, float*, int, void*), void*, bool, bool, bool, bool, bool) (vmaf.cpp:278)
==12116==    by 0x52165B6: RunVmaf(char const*, int, int, int (*)(float*, float*, float*, int, void*), void*, char const*, char const*, char const*, bool, bool, bool, bool, bool, char const*) (vmaf.cpp:645)
==12116==    by 0x518AFFF: compute_vmaf_score (vf_libvmaf.c:161)
==12116==    by 0x518AFFF: call_vmaf (vf_libvmaf.c:170)
==12116==    by 0x7967493: start_thread (pthread_create.c:333)
==12116==    by 0x7F69A8E: clone (clone.S:97)
==12116==
==12116== Invalid read of size 4
==12116==    at 0x518AC79: read_frame_8bit (vf_libvmaf.c:147)
==12116==    by 0x52AB5E8: combo (combo.c:149)
==12116==    by 0x5212E95: VmafRunner::run(Asset, int (*)(float*, float*, float*, int, void*), void*, bool, bool, bool, bool, bool) (vmaf.cpp:278)
==12116==    by 0x52165B6: RunVmaf(char const*, int, int, int (*)(float*, float*, float*, int, void*), void*, char const*, char const*, char const*, bool, bool, bool, bool, bool, char const*) (vmaf.cpp:645)
==12116==    by 0x518AFFF: compute_vmaf_score (vf_libvmaf.c:161)
==12116==    by 0x518AFFF: call_vmaf (vf_libvmaf.c:170)
==12116==    by 0x7967493: start_thread (pthread_create.c:333)
==12116==    by 0x7F69A8E: clone (clone.S:97)
==12116==  Address 0x40 is not stack'd, malloc'd or (recently) free'd
==12116==
==12116==
==12116== Process terminating with default action of signal 11 (SIGSEGV)
==12116==  Access not within mapped region at address 0x40
==12116==    at 0x518AC79: read_frame_8bit (vf_libvmaf.c:147)
==12116==    by 0x52AB5E8: combo (combo.c:149)
==12116==    by 0x5212E95: VmafRunner::run(Asset, int (*)(float*, float*, float*, int, void*), void*, bool, bool, bool, bool, bool) (vmaf.cpp:278)
==12116==    by 0x52165B6: RunVmaf(char const*, int, int, int (*)(float*, float*, float*, int, void*), void*, char const*, char const*, char const*, bool, bool, bool, bool, bool, char const*) (vmaf.cpp:645)
==12116==    by 0x518AFFF: compute_vmaf_score (vf_libvmaf.c:161)
==12116==    by 0x518AFFF: call_vmaf (vf_libvmaf.c:170)
==12116==    by 0x7967493: start_thread (pthread_create.c:333)
==12116==    by 0x7F69A8E: clone (clone.S:97)

lavfi/vf_blend: convert to framesync2.

lavfi/vf_overlay: use framesync2 options.

lavfi/framesync2: add common options.

Also add functions and macros to help filters chaining these
options to their own.