lavc/tscc: Make 32bit output opaque.

Found-by: wm4

nutdec: Remove unused variables

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

img2dec: Remove dead code

Reviewed-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Reviewed-by: Carl Eugen Hoyos <cehoyos@ag.or.at>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/avfft: Add simple self test

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

generate_wave_table: Add include for AVSampleFormat

Fixes warning in `make checkheaders`.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

audioconvert: Add missing include for FF_API_AUDIO_CONVERT

Fixes warning in `make checkheaders`.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

x86/hevc_sao: fix loading of RIP address

pb_eo must be handled as a rip relative address for MSVC64, so an
intermediate register is needed. Should fix link failures.

Suggested by Hendrik Leppkes and Christophe Gisquet.

Tested-By: Hendrik Leppkes <h.leppkes@gmail.com>
Reviewed-by: Christophe Gisquet <christophe.gisquet@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

x86/hevc: use CLIPW macro when possible

Conflicts:
libavcodec/x86/hevc_mc.asm

Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

x86: hevc_mc: use epel_hv 16-wide function

The epel_hv functions were still relying on only epel_hv 8-wide
being the maximum width instanciated.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

x86: hevc_mc: add AVX2 optimizations

before
33304 decicycles in luma_bi_1, 523066 runs, 1222 skips
38138 decicycles in luma_bi_2, 523427 runs, 861 skips
13490 decicycles in luma_uni, 516138 runs, 8150 skips
after
20185 decicycles in luma_bi_1, 519970 runs, 4318 skips
24620 decicycles in luma_bi_2, 521024 runs, 3264 skips
10397 decicycles in luma_uni, 515715 runs, 8573 skips

Conflicts:
libavcodec/x86/hevc_mc.asm
libavcodec/x86/hevcdsp_init.c

Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avformat/rpl: check av_get_packet() for failure

Also make ret signed as it should be from start.

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

avcodec/h264: Be more strict on rejecting pps/sps changes

Fixes race condition
Fixes: signal_sigsegv_1472ac3_468_cov_2915641226_CABACI3_Sony_B.jsv
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/h264: Be more strict on rejecting pps_id changes

Fixes race condition
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avformat/thp: check av_get_packet() for failure

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

avcodec/h264_ps: More completely check the bit depths

Fixes out of array read
Fixes: asan_static-oob_30328b6_719_cov_3325483287_H264_artifacts_motion.h264
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avformat/tta: only check for header and seek table crc if requested

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>

Revert "avcodec/x86/lossless_audiodsp: Make scalarproduct_and_madd_int16 prototypes more similar"

This reverts commit 3b4ffba3af968ae702e3a44f6b5f53445efc7363.

Unbreaks the SSSE3 code on mingw32

Conflicts:

libavcodec/x86/lossless_audiodsp.asm

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/x86/lossless_audiodsp: Move order&8 fallback into C code

This is simpler and more robust, and fixes mismatching XMM save restore
mismatches

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/vp3: pass correct context to av_log()

Fixes null pointer dereference
Fixes: signal_sigsegv_000_3694_cov_1050071691_theora.mkv
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/x86/lossless_audiodsp: Make scalarproduct_and_madd_int16 prototypes more similar

This is needed as the mmx code is used as fallback from the ssse3 code

Suggested-by: jamrial
Tested-by: wm4
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/hevc: drop redundant ifs()

Found-by: Clément Bœsch <u@pkh.me>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

hevcdsp: ARM NEON optimized deblocking filter

cherry picked from commit 1b9ee47d2f43b0a029a9468233626102eb1473b8

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

hevc: free sao buffers when receiving a new SPS

The buffer pointers would be otherwise overwritten, causing a
leak on e.g. PERSIST_RPARAM_A_RExt_Sony_1.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

vp9: assign PTS to visible instead of invisible frames

All the webm/vp9 files I have seen so far can have packets that contain
1 invisible and 1 visible frame. The vp9 parser separates them. Since
the invisible frame is always (?) the first sub-packet, the new packet
is assigned the PTS of the original packet, while the packet containing
the visible frame has no PTS.

This patch essentially reassigns the PTS from the invisible to the
visible frame.

Reviewed-by: "Ronald S. Bultje" <rsbultje@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

x86/hevcdsp: add ff_hevc_sao_edge_filter_{10,12}_{sse2,avx2}

Original x86 intrinsics code by Pierre-Edouard Lepere.
Yasm port, refactoring and optimizations by James Almer.

Benchmarks of BQTerrace_1920x1080_60_qp22.bin with an Intel Core i5-4200U

Width 32
342694 decicycles in sao_edge_filter_10, 16384 runs, 0 skips
29476 decicycles in ff_hevc_sao_edge_filter_32_10_ssse3, 16384 runs, 0 skips
13996 decicycles in ff_hevc_sao_edge_filter_32_10_avx2, 16381 runs, 3 skips

Width 64
581163 decicycles in sao_edge_filter_10, 8192 runs, 0 skips
59774 decicycles in ff_hevc_sao_edge_filter_64_10_ssse3, 8192 runs, 0 skips
28383 decicycles in ff_hevc_sao_edge_filter_64_10_avx2, 8191 runs, 1 skips

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

x86/hevcdsp: add ff_hevc_sao_edge_filter_8_{ssse3,avx2}

Original x86 intrinsics code and initial yasm port by Pierre-Edouard Lepere.
Refactoring and optimizations by James Almer.

Benchmarks of BQTerrace_1920x1080_60_qp22.bin with an Intel Core i5-4200U

Width 32
158583 decicycles in edge, sao_edge_filter_8 runs, 0 skips
5205 decicycles in ff_hevc_sao_edge_filter_32_8_ssse3, 32767 runs, 1 skips
2942 decicycles in ff_hevc_sao_edge_filter_32_8_avx2, 32767 runs, 1 skips

Width 64
705639 decicycles in sao_edge_filter_8, 262144 runs, 0 skips
19224 decicycles in ff_hevc_sao_edge_filter_64_8_ssse3, 262111 runs, 33 skips
10433 decicycles in ff_hevc_sao_edge_filter_64_8_avx2, 262115 runs, 29 skips

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

hevcdsp: remove compilation-time-fixed parameter from sao_edge_filter

The stride_src parameter is always 2 * MAX_PB_SIZE + FF_INPUT_BUFFER_PADDING_SIZE.

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

avcodec/h264_refs: set last_pic_for_ec only if it has not been set previously

This ensures we do not loose the frame in case or multiple clears
Fixes out of array read
Fixes: asan_heap-oob_2fa47ea_2100_cov_1278768963_ff_add_pixels_clamped_mmx.m2ts
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Merge remote-tracking branch 'cehoyos/master'

* cehoyos/master:
  Fix compilation with --disable-protocol=udp

Merged-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/alsdec: use init_get_bits8()

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

avcodec/cllc: use init_get_bits8()

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

Fix compilation with --disable-protocol=udp

avfilter/vf_fps: update frame drop comment

Found-by: ubitux
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avformat/thp: Check av_get_packet() for failure not only for partial output

Fixes null pointer dereference
Fixes: signal_sigsegv_db2c1f_3108_cov_163322880_pikmin2_opening1_partial.thp
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

lavf/avc: add buffer padding to extradata allocation

ff_avc_write_annexb_extradata() allocates extradata, but don't add
FF_INPUT_BUFFER_PADDING_SIZE value

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

avcodec/nvenc: De-compensate aspect ratio compensation of DVD-like content.

For reasons we are not privy to, nvidia decided that the nvenc encoder
should apply aspect ratio compensation to 'DVD like' content, assuming that
the content is not bt.601 compliant, but needs to be bt.601 compliant. In
this context, that means that they make the following, questionable,
assumptions:

1) If the input dimensions are 720x480 or 720x576, assume the content has
an active area of 704x480 or 704x576.

2) Assume that whatever the input sample aspect ratio is, it does not account
for the difference between 'physical' and 'active' dimensions.

From, these assumptions, they then conclude that they can 'help', by adjusting
the sample aspect ratio by a factor of 45/44. And indeed, if you wanted to
display only the 704 wide active area with the same aspect ratio as the full
720 wide image - this would be the correct adjustment factor, but what if you
don't? And more importantly, what if you're used to ffmpeg not making this kind
of adjustment at encode time - because none of the other encoders do this!

And, what if you had already accounted for bt.601 and your input had the
correct attributes? Well, it's going to apply the compensation anyway!
So, if you take some content, and feed it through nvenc repeatedly, it
will keep scaling the aspect ratio every time, stretching your video out
more and more and more.

So, clearly, regardless of whether you want to apply bt.601 aspect ratio
adjustments or not, this is not the way to do it. With any other ffmpeg
encoder, you would do it as part of defining your input paramters or
do the adjustment at playback time, and there's no reason by nvenc
should be any different.

This change adds some logic to undo the compensation that nvenc would
otherwise do.

nvidia engineers have told us that they will work to make this
compensation mechanism optional in a future release of the nvenc
SDK. At that point, we can adapt accordingly.

Signed-off-by: Philip Langdale <philipl@overt.org>
Reviewed-by: Timo Rothenpieler <timo@rothenpieler.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

swscale/utils: Limit filter shifting so as not to read from prior the array

Fixes out of array read
Fixes: asan_heap-oob_1fb2f9b_3780_cov_3984375136_usf.mkv
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/mpegvideo_motion: Fix gmc chroma dimensions

Fixes integer overflow and out of array read
Fixes: asan_heap-oob_1fb2f9b_3780_cov_3984375136_usf.mkv
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

hevcdsp: replace the SAOParams struct parameter from sao_edge_filter

As with sao_band_filter, pass instead the two variables from the struct needed in the function.
This simplifies writing asm optimized versions.

Reviewed-by: Mickaël Raulet <mraulet@insa-rennes.fr>
Signed-off-by: James Almer <jamrial@gmail.com>

hevcdsp: further simplify sao_edge_filter

Reviewed-by: Christophe Gisquet <christophe.gisquet@gmail.com>
Reviewed-by: Mickaël Raulet <mraulet@insa-rennes.fr>
Signed-off-by: James Almer <jamrial@gmail.com>

hevcdsp: simplified sao_edge_filter

Reviewed-by: Christophe Gisquet <christophe.gisquet@gmail.com>
Reviewed-by: Mickaël Raulet <mraulet@insa-rennes.fr>

hevcdsp: separated sao edge filter and pixel restore funcs

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Reviewed-by: Christophe Gisquet <christophe.gisquet@gmail.com>
Reviewed-by: Mickaël Raulet <mraulet@insa-rennes.fr>

avcodec/mjpegdec: Check number of components for JPEG-LS

Fixes out of array accesses
Fixes: asan_heap-oob_1c1a4ea_1242_cov_2274415971_TESTcmyk.jpg
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/mjpegdec: Check escape sequence validity

Fixes assertion failure
Fixes: asan_heap-oob_1c1a4ea_1242_cov_2274415971_TESTcmyk.jpg
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avfilter/vf_fps: Do not drop a random subset of frames

This also avoids droping the frame which is closest to the target timestamp

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

dxva2_hevc: properly fill the scaling list structure

The scaling list can be specified in either the SPS or PPS.
Additionally, compensate for the diagonal scan permutation applied in the decoder.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avformat/mpc8: Use uint64_t in *_get_v() to avoid undefined behavior

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/cdxl: use init_get_bits8()

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

Merge commit '8c1ce7787ad7af8fc321b4a145e9dc965f6d0e86'

* commit '8c1ce7787ad7af8fc321b4a145e9dc965f6d0e86':
  aacsbr: silence message for SBR extension "padding".

See: 1ac606bae60e46522189b678b58a7fb8376046ac
Merged-by: Michael Niedermayer <michaelni@gmx.at>

avformat/siff: fix if_( style

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

Merge commit 'd615187f74ddf3413778a8b5b7ae17255b0df88e'

* commit 'd615187f74ddf3413778a8b5b7ae17255b0df88e':
  aacdec: Support for ER AAC ELD 480.

Conflicts:
libavcodec/aacdec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '7640c4a371a97899dfb443d980fd0bf8ac587754'

* commit '7640c4a371a97899dfb443d980fd0bf8ac587754':
  aacdec: Tables for length 480 AAC ELD.

Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '0ee2573347ecdb9cb5656001f7201d819eec16d8'

* commit '0ee2573347ecdb9cb5656001f7201d819eec16d8':
  aacdec: Support for ER AAC in LATM

Conflicts:
libavcodec/aacdec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit 'edd9ea3ffba1d5873dead1c57c74b1e3cc912167'

* commit 'edd9ea3ffba1d5873dead1c57c74b1e3cc912167':
  aacdec: Refactor aac_er_decode_frame.

Merged-by: Michael Niedermayer <michaelni@gmx.at>

lavf/utils: fix if_( style

doc/muxers/image2: remove the non-negative number requirement for start_number

Update after b37858eae186ff84afd38cf3e845ba6e037e6397.

Merge commit '82bd8a57692d8f3643ad0903c97e4a0f84393f53'

* commit '82bd8a57692d8f3643ad0903c97e4a0f84393f53':
  aacdec: Refactor decode_ics_info.

Merged-by: Michael Niedermayer <michaelni@gmx.at>

Fix standalone compilation of the tblend filter.

avcodec/evrcdec: use init_get_bits8()

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

avcodec/wnv1: use init_get_bits8()

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

avcodec/on2avc: use init_get_bits8()

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

avcodec/tak_parser: use init_get_bits8()

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

avcodec/ac3dec: use init_get_bits8()

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

avcodec/qcelpdec: use init_get_bits8()

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

avcodec/webp: use init_get_bits8()

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

aacsbr: silence message for SBR extension "padding".

Some files contain a few additional, all-0 bits.
Check for that case and don't print incorrect "not supported"
message.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Alex Converse <alex.converse@gmail.com>

aacdec: Support for ER AAC ELD 480.

Based in part on work from Niel van der Westhuizen <espes@pequalsnp.com>.

aacdec: Tables for length 480 AAC ELD.

aacdec: Support for ER AAC in LATM

aacdec: Refactor aac_er_decode_frame.

aacdec: Refactor decode_ics_info.

ffmpeg: Make CFR frame drop threshold user adjustable

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/hevc: Update the USE_SAO_SMALL_BUFFER case for the alignment requirements in FFmpeg

Use edge emu buffers
And enable the code unconditionally

Speed difference without USE_SAO_SMALL_BUFFER and with the new code:
Decicycles: 26772->26220 (BO32),  83803->80942 (BO64)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/hevc: Do not zero is_pcm on allocation

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/hevc: reduce memory for SAO

cherry picked from commit 5d9f79edef2c11b915bdac3a025b59a32082f409

SAO edge filter uses pre-SAO pixel data on the left and top of the ctb, so
this data must be kept available. This was done previously by having 2
copies of the frame, one before and one after SAO.

This commit reduces the storage to just that, instead of the previous whole
frame.

Commit message taken from patch by Christophe Gisquet <christophe.gisquet@gmail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avformat/mpc8: fix broken pointer math

This could overflow and crash at least on 32 bit systems.

Reviewed-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avformat/mpc8: fix hang with fuzzed file

This can lead to an endless loop by seeking back a few bytes after each
attempted chunk read. Assuming negative sizes are always invalid, this
is easy to fix. Other code in this demuxer treats negative sizes as
invalid as well.

Fixes ticket #4262.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

x86: lavu/x264asm: fix ymm register instantiation

This mimicks what is done for the other instruction sets.

Tested-by: James Almer <jamrial@gmail.com>
Tested-by: Mickaël Raulet <mraulet@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '898276c16b1683ac77723e97574a3bfdb29507fd'

* commit '898276c16b1683ac77723e97574a3bfdb29507fd':
  r3d: Fix pos type

Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit 'ec524ed12aa1aeb37125203f1adf5aa10dfcb0de'

* commit 'ec524ed12aa1aeb37125203f1adf5aa10dfcb0de':
  tta: Fix framepos and start_offset types

Conflicts:
libavformat/tta.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit 'a6653787a4b1e89170ff7962312dd110769c83a3'

* commit 'a6653787a4b1e89170ff7962312dd110769c83a3':
  libopencv: Check kernel_str life cycle

Conflicts:
libavfilter/vf_libopencv.c

See: f16a6f667c993a158643b52815ec42961508b0a9
Merged-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/svq1dec: Add assert to ensure "stages >= 0"

This is currently always true, the assert protects against
future changes to the code breaking this assumtation

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '9b8c8a9395c849639aea0f6b5300e991e93c3a73'

* commit '9b8c8a9395c849639aea0f6b5300e991e93c3a73':
  svq1dec: Validate the stages value strictly

Not merged, this is wrong, the condition is not possible

Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '6f7a32839d1b913be8170e91c3ac9816b314da21'

* commit '6f7a32839d1b913be8170e91c3ac9816b314da21':
  svq1enc: correctly handle memory error and allocations

Conflicts:
libavcodec/svq1enc.c

See: 79888388e7c4ca596354f1c093e1c655df7824b8
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '67e9f3907d6d438a413df72d72c1339a0c11a290'

* commit '67e9f3907d6d438a413df72d72c1339a0c11a290':
  isom: Decode Prores 4444 XQ with the existing Prores decoder

See: fe47cba7e8daa987ac8c802362d8dad892858cd5
Merged-by: Michael Niedermayer <michaelni@gmx.at>

avformat: fix mode of img2dec.c and utils.c

Found-by: jamrial
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit 'e3528d2a7bf29ba148d7ac1678552ce0089cd14f'

* commit 'e3528d2a7bf29ba148d7ac1678552ce0089cd14f':
  mov: Implement parsing of the "HandlerName" from the MP4 HDLR atom

Conflicts:
libavformat/mov.c

See: b76bc010343b0cff8717cc7ee81e47273272336c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '27b99d929fe3440b4bba8e5d970c2802f274f328'

* commit '27b99d929fe3440b4bba8e5d970c2802f274f328':
  siff: Return more meaningful error values

Conflicts:
libavformat/siff.c

See: 29c3ebf56e2b54c68c52668937f74a874ecb49ac
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '75439bb31b3ab76f9a4d30c5de4ff9f407ec8128'

* commit '75439bb31b3ab76f9a4d30c5de4ff9f407ec8128':
  siff: K&R formatting cosmetics

Conflicts:
libavformat/siff.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

avformat/img2dec: remove the non-negative number requirement for start_number option

industrial cameras usually mark the trigger frame as frame number 0
all frames saved before trigger frame receive a negative sequence number

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

r3d: Fix pos type

avio_tell can return a negative number.

Bug-Id: CID 1265715
CC: libav-stable@libav.org

tta: Fix framepos and start_offset types

Also propagate errors.

CC: libav-stable@libav.org
Bug-Id: CID 1238812

libopencv: Check kernel_str life cycle

The string might or might not be set depending if there
are args and in case of error it must be freed nonetheless.

CC: libav-stable@libav.org
Bug-Id: CID 739878 / CID 739882

svq1dec: Validate the stages value strictly

It can be less than -1.

Bug-Id: CID 1194397 / CID 1194398
CC: libav-stable@libav.org

svq1enc: correctly handle memory error and allocations

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

isom: Decode Prores 4444 XQ with the existing Prores decoder

The frames seem to contain a higher bitrate which our decoder is
able to handle.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

mov: Implement parsing of the "HandlerName" from the MP4 HDLR atom

This atom typically is used for a track title. The handler name is stored
as a Pascal string in the QT specs (first byte is the length of the string),
so do not export it.

A second length check based on the first character is added to avoid
overwriting an already specified handler_name (it happens with YouTube
videos for instance, the handler_name get masked), or specifying an
empty string metadata.

The Pascal string fix and the second length check are written
by Clément Bœsch <clement.boesch@smartjog.com>.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

avformat/tta: fix crash with corrupted files

av_add_index_entry() can fail, for example because the parameters are
invalid, or because memory allocation fails. Check this; it can actually
happen with corrupted files.

The second hunk is just for robustness. Just in case functions like
ff_reduce_index() remove entries. (Not sure if this can actually
happen.)

Fixes ticket #4294.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

siff: Return more meaningful error values

siff: K&R formatting cosmetics