This makes no differnce as the affected values cannot occur
But it will likely help static analyzers
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This makes no difference for supported input but avoids a
out of array read with input that is never passed in currently
Fixes CID717919
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
if 0.0 != 0.0 a out of array read would occur, equal checks
with floating point may behave in such odd ways, though
this is very unlikely in a real implementation of a compiler
Fixes: CID718936
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
The DPX encoder now writes 12 DPX that open correctly (tested with
ImageMagick), and also correspond to the 12 bit sample files at
http://samples.ffmpeg.org/image-samples/dpx_samples.zip
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Rewrite the DPX decoder to work with provided sample DPXs at
http://samples.ffmpeg.org/image-samples/dpx_samples.zip
The decoder could only decode 8 and 10 bit without alpha correctly,
failing or even crashing at other flavors. This patch aims to fix
these issues, properly decoding all variants of DPX provided in the
referenced DPX sample zip. For 10 and 12 bit, the alpha channel
is ignored, but decoding is still possible.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
bits_per_coded_sample should be set from demuxer and
not from decoder.
Prior to this change value set from demuxer would get
overwritten in decoder.
Signed-off-by: Paul B Mahol <onemda@gmail.com>
Fixes:
libavcodec/svq3.c:661:9: warning: passing argument 2 of 'svq3_decode_block' from incompatible pointer type
libavcodec/svq3.c:208:19: note: expected 'DCTELEM *' but argument is of type 'DCTELEM (*)[32]'
Signed-off-by: Mans Rullgard <mans@mansr.com>
The existing code is not in the right place and it should cover both
interlaced frame and field pictures.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
This is required due to the way VC-1 handles chroma pull-back which may end
up causing negative chroma MV for zero luma MV. Edge emulation needs to be
invoked in such cases.
This only affects vertical component of chroma motion vector.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Interlaced field pictures can have one or two reference pictures, signaled
by NUMREF syntax element. For single reference pictures, reference picture
is determined by REFFIELD syntax element.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
GCC cannot proof that c->mc_frame_counter is always >- 0, changing the
type from int to unsigned fixes following warning:
libavcodec/a64multienc.c: In function ‘a64multi_encode_frame’:
libavcodec/a64multienc.c:342:17: warning: ‘buf’ may be used uninitialized in this function[-Wuninitialized]
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
Paul B Mahol
Michael Niedermayer
Georg Lippitsch
Anton Khirnov
Martin Storsjö
Mans Rullgard
Diego Biurrun
Luca Barbato
Janne Grunau
Mashiat Sarker Shakkhar