Current code divides before increasing precision.
Also reduce upper bound for strength from 255 to 64. This will prevent
an overflow in the SSSE3 and MMX filter_line code: delta is expressed as
an u16 being shifted by 2 to the left. If it overflows, having a
strength not above 64 will make sure that m is set to 0 (making the
m*m*delta >> 14 expression void).
A value above 64 should not make any sense unless gradfun is used as
a blur filter.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Instead of this it would be possible to change the code to support
larger K but that would make the code slower and probably still need
checks on K.
This variant is choosen as there are no known valid files that need
larger K
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
- Make MultiByteToWideChar fail when it encounters invalid encoding.
Without this, invalid characters might just be skipped
- When MultiByteToWideChar fails, assume the file name is in CP_ACP
and open it via normal open function, even when the file will be
written
- When malloc fails return error instead of crashing
Signed-off-by: Martin Storsjö <martin@martin.st>
In order to match Linux behaviour better our Windows-specific
open() replacement should disable Windows default file locking.
Signed-off-by: Martin Storsjö <martin@martin.st>
This makes standalone compilation of the eatqi decoder
succeed. The dependency comes from the shared mpeg12dec.o file.
Signed-off-by: Martin Storsjö <martin@martin.st>
This fixes standalone compilation of the msmpeg4v2, msmpeg4v3
and wmv2 encoders, that previously failed to link due to the
decoder codepaths requiring error_resilience.
Signed-off-by: Martin Storsjö <martin@martin.st>
* qatar/master:
hwaccel: fix use with frame based multithreading
Conflicts:
libavcodec/h263dec.c
libavcodec/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Allows use of AVHWAccel based decoders with frame based multithreading.
The decoders will be forced into an non-concurrent mode by delaying
ff_thread_finish_setup() calls after decoding of the current frame
is finished.
This wastes memory by unnecessarily using multiple threads and thus
copies of the decoder context but allows seamless switching between
hardware accelerated and frame threaded software decoding when the
hardware decoder does not support the stream.
Since c977039e58 plane count for
PIX_FMT_HWACCEL pixel formats is 0 instead of 1. The created dummy
AVBuffers are still bogus since AVFrame does not hold frame data when
AVHWAccels are used.
Clément Bœsch
Diego Biurrun
Anton Khirnov
Michael Niedermayer
Dale Curtis
Hendrik Leppkes
Reimar Döffinger
Martin Storsjö
Kostya Shishkov
Janne Grunau
d s
Carl Eugen Hoyos
Loren Merritt