This increases the search space from the hardcoded 17 tables
to ~ 23^512 tables
The mul_count choice is chosen by bruteforce
All testcases tried, improve
Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Fixes compilation in case where the FLV encoder is disabled
with any other H.263 based encoder enabled.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Put it into SnowEncContext instead. Also use the proper type
(it is only used as IDWTELEM aka short).
(The allocation code allocated it in units of uint32_t,
yet it was never used in this way. I made the array so big
that the size (in bytes) does not change.)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
They have a fixed size and given that nowadays
MotionEstContext is no longer in any decoder's private context,
it is not wasteful to just put it into there.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
encode_thread() puts two MPVEncContexts (2*6516B here)
on the stack and zeroes one of them in order to
temporarily store the variables that get changed
during encoding a macroblock (when there is more than
one candidate type for a macroblock). This is wasteful
and therefore this commit adds a small (328B here) structure
to store exactly the fields that actually need to be backed
up. Then one can extend MPVEncContext without fearing
too use up to much stack.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Do this instead of exporting raw_pix_fmt_tags
via avpriv_get_raw_pix_fmt_tags().
For shared builds this will lead to an increase in the
combined size of the lavc and fourcc2pixfmt binaries
(because the overhead of exporting avpriv_get_raw_pix_fmt_tags()
is dwarfed by the size of the array), but given that
fourcc2pixfmt is a test tool that is not widely distributed
it does not really matter. For static builds the opposite
is true (the rest of lavc/raw.o is no longer pulled into
the test tool and the getter can be removed, too).
This patch has the additional benefit of removing
struct PixelFormatTag from the ABI.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Not worth the overhead of exporting it.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: James Almer <jamrial@gmail.com>
This is possible without deprecation period, because said field
is documented as only for our libav* libraries and not the general
public.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: James Almer <jamrial@gmail.com>
There is a special case I missed, its simpler to just store
Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
We need to allocate space for 64 coefficients per block;
24dbc4c2e8 wanted to
perform the calculation 64*sizeof(MJpegHuffmanCode)
at compile time, yet in the end did it in a way that
made it allocate 64 times as much memory as needed.
Reported-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Fixes a regression caused by my desire to use loop-scope
for iterators in 72bf3d3c12.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
The kVTVideoDecoderReferenceMissingErr constant was only added
in the macOS 12 and iOS 15 SDKs. Use a hardcoded value instead
of the named constant, to fix building with older SDKs
after c6214b0d69.
Signed-off-by: Martin Storsjö <martin@martin.st>
For all encoders and all decoders except MPEG-4 the unquantize
functions to use don't change at all and therefore needn't be
kept in the context. So discard them after setting them;
for MPEG-4, the functions get assigned on a per-frame basis.
Decoders not using any unquantize functions (H.261, MPEG-1/2)
as well as decoders that only call ff_mpv_reconstruct_mb()
through error resilience (RV30/40, the VC-1 family) don't have
the remaining pointers set at all.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
