* qatar/master:
cosmetics: Consistently use C-style comments with multiple inclusion guards
anm: fix a few Doxygen comments
misc typo and wording fixes
attributes: add av_noreturn
attributes: drop pointless define guards
configure: do not disable av_always_inline with --enable-small
flvdec: initial stream switch support
avplay: fix write on freed memory for rawvideo
snow: remove a VLA used for edge emulation
x86: lavfi: fix gradfun/yadif build with mmx/sse disabled
snow: remove the runs[] VLA.
snow: Check mallocs at init
flacdec: remove redundant setting of avctx->sample_fmt
Conflicts:
ffplay.c
libavcodec/h264.c
libavcodec/snow.c
libavcodec/snow.h
libavcodec/snowdec.c
libavcodec/snowenc.c
libavformat/flvdec.c
libavutil/attributes.h
tools/patcheck
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Allow to deal with the list file printing only in a single point, thus
simplifying logic, and allow a bit of factorization (no special case
needed when printing the first file name of the list).
Currently, --enable-small turns av_always_inline into plain inline,
which is more or less ignored by the compiler. While the intent of
this is probably to reduce code size by avoiding some inlining, it
has more far-reaching effects.
We use av_always_inline in two situations:
1. The body of a function is smaller than the call overhead.
Instances of these are abundant in libavutil, the bswap.h
functions being good examples.
2. The function is a template relying on constant propagation
through inlined calls for sane code generation. These are
often found in motion compensation code.
Both of these types of functions should be inlined even if targeting
small code size.
Although GCC has heuristics for detecting the first of these types,
it is not always reliable, especially when the function uses inline
assembler, which is often the reason for having those functions in
the first place, so making it explicit is generally a good idea.
The size increase from inlining template-type functions is usually
much smaller than it seems due to different branches being mutually
exclusive between the different invocations. The dead branches can,
however, only be removed after inlining and constant propagation have
been performed, which means the initial cost estimate for inlining
these is much higher than is actually the case, resulting in GCC
often making bad choices if left to its own devices.
Furthermore, the GCC inliner limits how much it allows a function to
grow due to automatic inlining of calls, and this appears to not take
call overhead into account. When nested inlining is used, the limit
may be hit before the innermost level is reached. In some cases, this
has prevented inlining of type 1 functions as defined above, resulting
in significant performance loss.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Do not assume avpacket and the decoded frames are independent.
To be absolutely sure and not sprinkle av_free_packet around the code
the call had been placed before getting the frame and on the error path.
This script works like "git bisect" except that you can
specify with "bisect need ffmpeg|ffplay|ffserver|ffprobe" which tool(s)
are needed for testing a checkout
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
The vsrc_buffer.h is not installed since commit 0b3b95813576, so there is
no point into keeping it around.
The buffersrc.h API, which is more powerful, should be used instead.
Stefano Sabatini
Michael Niedermayer
Nedeljko Babic
Carl Eugen Hoyos
Diego Biurrun
Reinhard Tartler
Mans Rullgard
Luca Barbato
Ronald S. Bultje
Paul B Mahol
Martin Storsjö