Check init_get_bits' result for NULL, to avoid dereferencing a NULL
pointer later (CWE-476).
Without this, a segfault happens when trying to decode a handcrafted
ogg-flac file with an absurdly long (e.g. 268435455 bytes) ogg header.
Co-authored-by: James Almer <jamrial@gmail.com>
Signed-off-by: Paul Arzelier <paul.arzelier@free.fr>
Importing Vulkan device on older versions no longer works due to the
lavu vulkan API changes (specifically, the switch to planar textures by
default). Additionally, importing on versions that don't suppirt
lock/unlock_queue is unsafe with the advent of the threaded vulkan
hwaccel. As a plus, saves us some annoying #ifdef boilerplate.
I will raise the minimum vf_libplacebo version globally on the next
stable release of libplacebo, and remove all of these checks.
Added prerequisites that must be met before providing support for the MPEG-5 EVC codec
- Added new entry to codec IDs list
- Added new entry to the codec descriptor list
- Bumped libavcodec minor version
- Added profiles for EVC codec
Signed-off-by: Dawid Kozinski <d.kozinski@samsung.com>
Signed-off-by: James Almer <jamrial@gmail.com>
According to Dave Airlie:
> <airlied> but I think ignoring it should be fine, I can't see any
> other way to get the imaeg extents correct for other usage
> <Lynne> what width/height should be used for the images?
> the final presentable dimensions, or the coded dimensions?
> <airlied> if you don't want noise I think the presentable dims
> <airlied> the driver should round up the allocations internally,
> but if you are going to sample from the images then w/h have to be
> the bounds of the image you want
> <airlied> since otherwise there's no way to stop the sampler from
> going outside the edges
Apparently, the alignment values are informative, rather than mandatory,
but the spec's wording makes it sound as if they're mandatory.
Previously floats where scaled up to 32bit int, but floats do not
have 32bits in their mantisse so a quarter of the bits where nonsense.
It seems no fate test is affected by this change, which is interresting
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
The new function is much more precise
For default beta it is slightly slower, but its speed is already at the
worst case in that comparison
while the replaced function becomes much slower for larger beta
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
0th order modified bessel function of the first kind are used in multiple
places, lets avoid having 3+ different implementations
I picked this one as its accurate and quite fast, it can be replaced if
a better one is found
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Fixes: signed integer overflow: -9223372036854775808 - 2082844800 cannot be represented in type 'long'
Fixes: 58384/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-6428383700713472
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
When seeking through MBAFF-coded H264, this can happen. Decoding calls end_frame
without calling start_frame. We are unable to decode this, as no frame
state has been set.
Happens for both VAAPI and Vulkan. Could be an issue elsewhere, hence
the individual commit.
