Core framework and AV1 only for now.
This will be useful in an upcoming commit, where CBS will be utilized by
a module outside libavcodec.
Signed-off-by: James Almer <jamrial@gmail.com>
This will be useful a following commit, where the offset of the Tile Group
inside a Frame OBU needs to be known.
Signed-off-by: James Almer <jamrial@gmail.com>
This reduces stack space requirements my 1.5 mb and should fix fate
Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
not a bugfix as this path was only used for float16 but it makes sense
to allow using this for integers too
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Fixes failures in some systems since 171060d5dc.
This can be further improved by only allocating the arrays when needed.
Signed-off-by: James Almer <jamrial@gmail.com>
ATM this performs as well or better as any other algorithm tried.
Its simple for the decoder.
On the encoder side complexity depends on how parameters are
chosen. But with a fixed mul_count of 1 and basic heuristic
it performs as well as any more complex choice i tried so far.
The encoder code here is flexible and allows mul_count > 1
and also can easily be used to exactly test various parameters.
With mul_count=512 we can gain another 6% in remap table size
for fixed point in float data. (this is not implemented in this
patch though)
Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This is a replacement in ffmpeg for the deprecated avcodec flag AV_CODEC_FLAG_DROPCHANGED.
This option is meant to be used when the filtergraph should not be
reinited upon input parameter changes as that leads to loss of state
in the filtergraph potentially leading to broken or aborted output,
e.g. inserting of silence with first_pts specified in aresample.
Generally useful to avoid corrupted yet decodable packets in live
streaming inputs.
This option when enabled takes precedence over reinit_filters
The existing default value is the same as the primary readrate.
This maintains the flow rate as best as possible but does not
reduce the lag. This new value allows catchup to gradually happen
without overwhelming the receiver.
Addresses a concern brought up in #11469
Otherwise the decoder may enter an loop of repeated state resets.
This can happen for streams with CRA but no IDR.
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
It allows the callee to clobber the MMX state,
yet since 1e3dc705df this is no longer
done. So use the stricter declare_func instead.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit adds option for enabling SmartAccess Video (SAV)
in AMF encoders. SAV is an AMD hardware-specific feature which
enables the parallelization of encode and decode streams across
multiple Video Codec Engine (VCN) hardware instances.
SDL2's headers #define HAVE_PTHREAD_SETNAME_NP (to one here);
we also have a config define which leads the compiler to
warn about this when the values are distinct (as they are here).
Suppress this warning by including config.h before SDL.h.
The latter will then redefine our define which doesn't matter
and which does not lead to warnings because compilers don't warn
about system headers by default (depending upon -Wsystem-headers).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
The field width in a %s directive gives the amount of characters
to read from the input and not the size of the receiving buffer;
the latter must be of course also have space for the trailing \0
which has been forgotten here. The commit adds it (and fixes a
-Wfortify-source warning from Clang).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
The underlying integer type of an enumeration is
implementation-defined (see C11, 6.7.2.2 (4)); GCC defaults
to unsigned if there are no negative values like for all enums
from pixfmt.h except enum AVPixelFormat.
This means that tests like "if (csp >= AVCOL_SPC_NB)" for
invalid colorspaces need not work as expected (namely if
enum AVColorSpace is signed). It also means that testing
for such an enum variable to be >= 0 may be tautologically
true. Clang emits a -Wtautological-unsigned-enum-zero-compare
warning for this.
Fix both of these issues by casting to unsigned.
Also do the same in libswscale/format.c.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
It is undefined behavior. Pass a dummy buffer instead.
Fixes "runtime error: applying non-zero offset 1024 to null pointer".
affected the SVQ1 vsynth FATE tests.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
It is undefined behavior.
Fixes "runtime error: applying non-zero offset 8 to null pointer".
Fixes the Snow vsynth FATE-tests.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Fixes "runtime error: addition of unsigned offset to 0x765a09523a90
overflowed to 0x765a09523a8e". This fixes all H.261 tests when run
under UBsan.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
