get_dc() divides the accumulated, OBMC-weighted DC by aa, the sum of the
squared OBMC weights taken over the in-plane pixels. When an OBMC block
falls entirely outside the plane - e.g. a tiny chroma plane after mcdeint
splits a frame into fields - no pixel contributes, aa stays 0 and the
ROUNDED_DIV() divides by zero (SIGFPE). ab is 0 in exactly the same case,
so the result degenerates to 0; return it directly.
Reproducible with the GPL mcdeint filter in slow/extra_slow mode, e.g.
ffmpeg -f lavfi -i testsrc=s=128x2 -vf mcdeint=mode=slow -f null -
Add a self-contained lavfi-based FATE regression test for the slow mode,
which previously crashed and is therefore not covered by the existing
sample-based fast/medium tests.
Fixes trac ticket #7779.
Signed-off-by: Bogdan Lisman <bogdan@pydevsolutions.com>
(cherry picked from commit a62d996927)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
For an edge block, get_block_rd() copies the full-OBMC-weight central
region directly from cur[] into the reconstruction. It moved one
boundary to block_w/block_h but overwrote the in-plane clip (x0/x1/y0/y1
computed earlier from the plane size) instead of intersecting with it.
When a plane is narrower than block_w - e.g. a tiny field/chroma plane
produced by the mcdeint filter - the right-edge case left x0 = block_w
while x1 stayed clipped to w - sx < block_w, so x1 - x0 became negative
and was passed to memcpy() as a huge size_t, crashing with SIGSEGV.
Intersect the moved boundaries with the existing clip so the copy region
stays inside the plane and the memcpy length can never be negative.
Reproducible with the GPL mcdeint filter in slow/extra_slow mode, e.g.
ffmpeg -f lavfi -i testsrc=s=5x32 -vf mcdeint=mode=slow -f null -
This is a separate crash from the get_dc() SIGFPE (ticket #7779) reached
through the same iterative_me() path. Add a lavfi-based FATE regression
test.
Signed-off-by: Bogdan Lisman <bogdan@pydevsolutions.com>
(cherry picked from commit 1168447626)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
The leading sign of a (sub)expression is stored as +-1 in each node's
value field (parse_factor) and every other function multiplies its
result by it. print, squish, gauss and lerp ignored it, so e.g.
-print(1) evaluated to 1 instead of -1 and -gauss(0) to 0.398942
instead of -0.398942, while -1*print(1) was correct.
Fixes: ticket #9833
Reported-by: Player701
Signed-off-by: Bogdan Lisman <bogdan@pydevsolutions.com>
(cherry picked from commit 3d1d546f70)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
refs does not belong to AVCodecParameters, so require a decoder:
it should only be showed when frames are actually processed by ffprobe.
Signed-off-by: Nicolas Gaullier <nicolas.gaullier@cji.paris>
This commit introduces new options to support more than one decryption
keys:
* add a decryption_keys option to MOV, that supports a dictionary of
KID=>key (in hex), using AV_OPT_TYPE_DICT
* add the corresponding cenc_decryption_keys option to DASH
Signed-off-by: Kacper Michajłow <kasper93@gmail.com>
This gives more information about each operation and helps catch issues
earlier on.
Sponsored-by: Sovereign Tech Fund
Signed-off-by: Ramiro Polla <ramiro.polla@gmail.com>
This requires a bit of a manual check in the 32-bit integer case to
make sure we don't exceed the value range of AVRational; but it still allows
quite a number of optimizations despite that restriction.
e.g.
rgb24 -> yuva444p9be:
- [u16 ...X -> ++++] SWS_OP_CLEAR : {_ _ _ 511}
- [u16 .... -> zzzz] SWS_OP_SWAP_BYTES
- [u16 .... -> zzzz] SWS_OP_WRITE : 4 elem(s) planar >> 0
+ [u16 ...X -> zzzX] SWS_OP_SWAP_BYTES
+ [u16 ...X -> zzz+] SWS_OP_CLEAR : {_ _ _ 65281}
+ [u16 .... -> zzz+] SWS_OP_WRITE : 4 elem(s) planar >> 0
gray -> yuv444p12be:
- [u16 .XXX -> +++X] SWS_OP_CLEAR : {_ 2048 2048 _}
- [u16 ...X -> zzzX] SWS_OP_SWAP_BYTES
- [u16 ...X -> zzzX] SWS_OP_WRITE : 3 elem(s) planar >> 0
+ [u16 .XXX -> zzXX] SWS_OP_SWAP_BYTES
+ [u16 .XXX -> z++X] SWS_OP_CLEAR : {_ 8 8 _}
+ [u16 ...X -> z++X] SWS_OP_WRITE : 3 elem(s) planar >> 0
Ultimately, the benefit of this will only become relevant once we start
splitting apart planes, since then we can have planes with only CLEAR
operations.
Sponsored-by: Sovereign Tech Fund
Signed-off-by: Niklas Haas <git@haasn.dev>
Don't just export initial_padding, but also take it into account for timestamps
by adjusting the stream's start_time. Also, export the padding samples in a way
that's actually supported, as currently trailing_padding is unused so no user
will look at it.
For the sake of not reducing coverage and because the lossy tests have reference
files that contain the priming samples, add the skip_manual flags2 to the tests
so we still output them. A new ffprobe call will ensure the demuxer behavior is
tested too.
Signed-off-by: James Almer <jamrial@gmail.com>
Unlike md5, the adler32 hash shows the frames with priming samples, which will
be useful in the following commits.
Signed-off-by: James Almer <jamrial@gmail.com>
This fixes running the test under Valgrind, where more, unrelated lines are
printed, making the comparison fail.
Signed-off-by: James Almer <jamrial@gmail.com>
Before this patch, the last packet in the affected fate test would be written
without a BlockDuration element despite the packet's duration being shorter
than the Opus frame size.
Signed-off-by: James Almer <jamrial@gmail.com>
Following up on b613eebe78, if a demuxer that exports complete frames sets a
duration, don't overwrite it from the output of the parser.
Signed-off-by: James Almer <jamrial@gmail.com>
If a codec has fixed block_align and frame_size but a given sample has either
priming or remainder frames, a pakt chunk can be written declaring zero packets
and no table, reporting only the samples to be discarded.
Signed-off-by: James Almer <jamrial@gmail.com>
st->duration is not guaranteed to be set, so store the sum of packet durations instead.
Also, set mPrimingFrames and mRemainderFrames to correct values.
Based on a patch by Jun Zhao.
Signed-off-by: James Almer <jamrial@gmail.com>
Take into account priming frames, exported as start time, and remainder frames,
substracted from the stream duration as well as exported as discard padding
side data in the last packet.
Signed-off-by: James Almer <jamrial@gmail.com>
Extract the Sample Aspect Ratio (SAR) from render_width_minus_1 and
render_height_minus_1 in the sequence header.
The AV1 specification defines the render dimensions, which can be used
in conjunction with the coded dimensions to determine the pixel aspect
ratio. This ensures consistent aspect ratio handling for AV1 streams
encapsulated in containers like MP4 or MKV, as observed in the updated
FATE tests where SAR changes from 0/1 to 1/1.
Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
If an input packet results in several output packets, the side data will be
exported only by the first output packet, and be missing from the rest.
Signed-off-by: Nicolas Gaullier <nicolas.gaullier@cji.paris>
Signed-off-by: James Almer <jamrial@gmail.com>
Many parsers will request data until they find what will be the start of the
next assembled packet in order to decide where to cut the current one. If this
happens, the loop in demux.c will, in case the demuxer exports already fully
assembled packets as is sometimes the case for MPEG-TS, discard the already
handled first input packet before it tries to move its side data to the output.
The affected FATE tests reflect this change by no longer dropping the side data
from the first input packet, nor exporting every other side data in the wrong
output packet.
Signed-off-by: James Almer <jamrial@gmail.com>
To be able to reuse colors from the original frame, the last value returned by
`p()` is tracked in the eval state, and if it is assigned to a variable, the
original color components are copied to `color_vars`. Thus, commands like
`setcolor` and `colorstop` can use those variables:
setvar pixel (p(0, 0))
...
setcolor pixel
`fate-filter-drawvg-video` now also verifies the `p()` function.
Signed-off-by: Ayose <ayosec@gmail.com>
The arguments for `setvar` and `call` commands can be colors (like `#rrggbb`).
This replaces the previous trick of using `0xRRGGBBAA` values to use colors as
procedure arguments.
The parser stores colors as the value expected by Cairo (a `double[4]`). This
array is allocated on the heap so the size of the union in `VGSArgument` is
not increased (i.e. it is still 8 bytes, instead of 32).
Signed-off-by: Ayose <ayosec@gmail.com>
If AVOptionArrayDef.def is NULL, av_opt_is_set_to_default() should return true
when the field in the object is NULL.
Signed-off-by: James Almer <jamrial@gmail.com>
Some tools like v4l2-ctl dump data without skip padding. If the
padding size is not an integer multiple of the number of pixel
bytes, we cannot handle it by using a larger width, e.g.,, for
RGB24 image with 32 bytes padding in each line.
This function was assuming that the bits are MSB-aligned, but they are
LSB-aligned in both practice (and in the actual backend).
Also update the documentation of SwsPackOp to make this clearer.
Fixes an incorrect omission of a clamp after decoding e.g. rgb4, since
the max value range was incorrectly determined as 0 as a result of unpacking
the MSB bits instead of the LSB bits:
bgr4 -> gray:
[ u8 XXXX -> +XXX] SWS_OP_READ : 1 elem(s) packed >> 1
[ u8 .XXX -> +++X] SWS_OP_UNPACK : {1 2 1 0}
[ u8 ...X -> +++X] SWS_OP_SWIZZLE : 2103
[ u8 ...X -> +++X] SWS_OP_CONVERT : u8 -> f32
[f32 ...X -> .++X] SWS_OP_LINEAR : dot3 [...]
[f32 .XXX -> .++X] SWS_OP_DITHER : 16x16 matrix + {0 3 2 5}
+ [f32 .XXX -> .++X] SWS_OP_MIN : x <= {255 _ _ _}
[f32 .XXX -> +++X] SWS_OP_CONVERT : f32 -> u8
[ u8 .XXX -> +++X] SWS_OP_WRITE : 1 elem(s) planar >> 0
(X = unused, + = exact, 0 = zero)
Most EXIF metadata is in IFD0 and most EXIF payloads only contain
one IFD, but it is possible for there to be more IFDs after the
existing trailing one. exiftool and similar software report these IFDs
as IFD1, IFD2, etc. This commit reads those additional IFDs and attaches
them as dummy entries in the top-level IFD ranging from 0xFFFC down to
0xFFED, which are unused by the EXIF spec. The EXIF API is only able to
return and work with a single IFD, so by attaching it as a subdirectory
this metadata can be preserved.
This is done transparently through the read/write process. Upon parsing
an additional IFD1, it will be attached, but it will be written with
av_exif_write after IFD0 rather than as a subdirectory, as intended.
Existing files without more than one IFD, i.e. most files, will be unaffected
by this change, as well as API clients looking to parse specific fields, but
now more metadata is parsed and written, rather than simply being discarded
as trailing data.
Signed-off-by: Leo Izen <leo.izen@gmail.com>
Use the concat protocol, to test the parser's capabilities to differentiate between
EOC maker before SOC marker, on top of false EOC marker positives and EOC maker on EOF.
Signed-off-by: James Almer <jamrial@gmail.com>
This requires updating the order of the dither matrix offsets as well. In
particular, this can only be done cleanly if the dither matrix offsets are
compatible between duplicated channels; but this should be guaranteed after
the previous commits.
As a side note, this also fixes a bug where we pushed SWS_OP_SWIZZLE past
SWS_OP_DITHER even for very low bit depth output (e.g. rgb4), which led to
a big loss in accuracy due to loss of per-channel dither noise.
Improves loss of e.g. gray -> rgb444 from 0.00358659 to 0.00261414,
now beating legacy swscale in these cases as well.
On the surface, this trades a tiny bit of PSNR for not introducing chroma
noise into grayscale images. However, the main reason for this change is
actually motivated by a desire to avoid regressing the status quo of
duplicating swizzles being able to be commuted past dither ops.
To improve decorrelation between components, we offset the dither matrix
slightly for each component. This is currently done by adding a hard-coded
offset of {0, 3, 2, 5} to each of the four components, respectively.
However, this represents a serious challenge when re-ordering SwsDitherOp
past a swizzle, or when splitting an SwsOpList into multiple sub-operations
(e.g. for decoupling luma from subsampled chroma when they are independent).
To fix this on a fundamental level, we have to keep track of the offset per
channel as part of the SwsDitherOp metadata, and respect those values at
runtime.
This commit merely adds the metadata; the update to the underlying backends
will come in a follow-up commit. The FATE change is merely due to the
added offsets in the op list print-out.
Bogdan Lisman