Linear interpolation goes from 63 (llvm) or 58 (gcc) to 48 (yasm)
cycles/sample on 64bit, or from 66 (llvm/gcc) to 52 (yasm) cycles/
sample on 32bit. Bon-linear goes from 43 (llvm) or 38 (gcc) to
32 (yasm) cycles/sample on 64bit, or from 46 (llvm) or 44 (gcc) to
38 (yasm) cycles/sample on 32bit (all testing on OSX 10.9.2, llvm
5.1 and gcc 4.8/9).
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'f134b5ec53':
apichanges: fill in changes for lavu 51.19 and 51.20
Conflicts:
doc/APIchanges
Merged-by: Michael Niedermayer <michaelni@gmx.at>
The commit causes minor out of array reads and was mainly intended for
future optimizations which turned out not to be meassurably faster.
Itself it was just 1 cpu cycle faster
Approved-by: jamrial
This reverts commit 057d2704e7.
* commit '5dd8c08fd5':
mpeg: Change ff_convert_matrix() to take an MpegEncContext parameter
Conflicts:
libavcodec/mpegvideo.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Commit fc9c857c introduced deadlock regression when processing too many inputs:
ffmpeg $(seq -f " -f lavfi -i aevalsrc=0:d=%.0f" 70) -vf concat=n=70:v=0:a=1 -f null -
Happens for different number of inputs, depending on available memory size,
overcommit settings, ulimits, etc. Easily noticeable for 32-bit builds,
that exhaust address space allocating 8-10 MB stack for each thread.
Earlier ffmpeg versions exited with unhelpful "Conversion failed!" message.
This patch fixes both problems: it frees the queue to prevent deadlock
and adds a meaningful error message if pthread_create() fails.
Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Approved-by: Tomas Härdin <tomas.hardin@codemill.se>
Approved-by: tim nicholson <nichot20@yahoo.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'a7fcd4122b':
output example: store the scaling context in the stream context
Conflicts:
doc/examples/muxing.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '6a927d7aaf':
output example: use a macro instead of a static variable
Conflicts:
doc/examples/muxing.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '63fd0d866c':
output example: allocate the audio frame only once
Conflicts:
doc/examples/muxing.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'edd5f95764':
output example: use OutputStream for audio streams as well
Conflicts:
doc/examples/muxing.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '5e7b125b6a':
output example: use the new AVFrame API to allocate audio frames
Conflicts:
doc/examples/muxing.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '294daf71a7':
output example: use a struct to bundle the video stream variables together
Conflicts:
doc/examples/muxing.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '38d044429d':
output example: use the new AVFrame API for allocating the video frame
Conflicts:
doc/examples/muxing.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '1b04eb20f7':
lavc: do not allocate edges in the default get_buffer2()
Conflicts:
libavcodec/utils.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
