This gets rid of the variable-length scratch buffer by filtering 16
pixels at a time and writing directly to the destination. The extra
loads this requires to load the source values are compensated by not
doing a round-trip to memory before shifting.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Instead of using an evil VLA, fall back to C version when edge
emulation is needed. MPEG4 GMC is a rarely used fringe feature
so the speed loss is an acceptable cost for safer code.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Discontinuous transmission is an addition to VAD/VBR operation, that
allows to greatly reduce bitrate for silent chunks or stationary
noises.
Signed-off-by: Martin Storsjö <martin@martin.st>
* qatar/master:
h264: don't touch H264Context->ref_count[] during MB decoding
x86: get_cpu_flags: add necessary ifdefs around function body
x86: Drop CPU detection intrinsics
x86: Add YASM implementations of cpuid and xgetbv from x264
Conflicts:
configure
libavcodec/h264_cabac.c
libavcodec/h264_cavlc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '65d12900432ac880d764edbbd36818431484a76e':
configure: add --enable-lto option
x86: cpu: Break out test for cpuid capabilities into separate function
x86: ff_get_cpu_flags_x86(): Avoid a pointless variable indirection
build: Factor out mpegaudio dependencies to CONFIG_MPEGAUDIO
segment: Add comments about calls that only are relevant for some muxers
segment: Add an option for omitting the first header and final trailer
Conflicts:
configure
libavcodec/Makefile
libavformat/segment.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'a854362b40f0e458db5a1fb0d2612a5702ee0ace':
segment: Flush buffered data before finishing a segment
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'f7b240434c015056bc6319ddbdb8483757cc13e2':
segment: Set the resend_headers flag for each segment
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '378a6315b7c48195ffd94e6aa9aa6d663d42b35e':
segment: Add an option for disabling writing of a header/trailer to each segment
Conflicts:
libavformat/segment.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'eb447d515956b3ce182d9750083131735f00324c':
segment: Free and reinit the muxer before calling avformat_write_header
Conflicts:
libavformat/segment.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '73871dc96ff78053b9dcd0eb259b7f5a5308ec87':
segment: Use the public av_write_header/av_write_trailer functions
Conflicts:
libavformat/segment.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '0edae4e6286096023cdd6adea74722fa06029867':
segment: Properly create new AVStreams for the chained muxer
segment: Add a missing space
Conflicts:
libavformat/segment.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
The variable is copied to subsequent threads at the same time, so this
may cause wrong ref_count[] values to be copied to subsequent threads.
This bug was found using TSAN and Helgrind.
Original patch by Ronald, adapted with a local_ref_count by Clément,
following the suggestion of Michael Niedermayer.
Signed-off-by: Clément Bœsch <clement.boesch@smartjog.com>
Some HLS servers return 403 when the Range header is present. Disabling http
seekability probing prevents the header from being added.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Add an tri-state (seek, non seek, automatic detection) option to HTTP to control seekability (default: automatic).
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This only adds a subset of the frame rates that can be stored, a full list
would be more than 500 entries. Such full list could (and should) be added
if it has a usecase but the number of users of even the now added rates
seem rather small.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
The variable is copied to subsequent threads at the same time, so this
may cause wrong ref_count[] values to be copied to subsequent threads.
This bug was found using TSAN.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Discontinuous transmission is an addition to VAD/VBR operation, that
allows to greatly reduce bitrate for silent chunks or stationary
noises.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
The value used in allocation is based on a estimate of the
maximum size of the spectral coefficients multiplied with 2
and rounded up. The exact or a tighter limit should be
found and used instead. But this issue shouldnt be left
open until someone works on that.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
