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16 Commits

Author SHA1 Message Date
Rémi Denis-Courmont
620e6e1487 arm: relax byte-swap assembler constraints 
There are no particular reasons to force the compiler to use the same
register as output and input operand. This forces an extra MOV
instruction if the input value needs to be reused after the swap.

In most cases, this makes no differences, as the compiler will seleect
the same register for both operands either way.

Signed-off-by: Martin Storsjö <martin@martin.st>
 2022-09-03 23:54:05 +03:00
James Almer
36e1665d3d avutil/attributes: add AV_GCC_VERSION_AT_MOST 
Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>
 2015-09-18 12:41:29 -03:00
Michael Niedermayer
89c8eaa321 Merge commit '637606de2d2e0af0a9fa2f23f943765d7d7c5cd5' 
* commit '637606de2d2e0af0a9fa2f23f943765d7d7c5cd5':
  configure: arm: make _inline arch ext symbols depend on inline_asm
  arm: use HAVE*_INLINE/EXTERNAL macros for conditional compilation

Conflicts:
	configure
	libavcodec/arm/dca.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2012-12-08 14:19:55 +01:00
Mans Rullgard
a7831d509f arm: use HAVE*_INLINE/EXTERNAL macros for conditional compilation 
These macros reflect the actual capabilities required here.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2012-12-07 16:54:03 +00:00
Michael Niedermayer
7e5496fc41 Merge remote-tracking branch 'qatar/master' 
* qatar/master:
  ARM: use numeric ID for Tag_ABI_align_preserved
  segment: Pass the interrupt callback on to the chained AVFormatContext, too
  ARM: bswap: drop armcc version of av_bswap16()
  ARM: set Tag_ABI_align_preserved in all asm files

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2012-10-03 13:35:02 +02:00
Mans Rullgard
1ca3b62b10 ARM: bswap: drop armcc version of av_bswap16() 
This function causes several versions of armcc to miscompile code,
and the performance impact is small.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2012-10-02 19:47:56 +01:00
Michael Niedermayer
8bc7fe4daf Merge remote-tracking branch 'qatar/master' 
* qatar/master:
  doxygen: misc consistency, spelling and wording fixes
  vcr1: drop unnecessary emms_c() calls without MMX code
  Replace all uses of av_close_input_file() with avformat_close_input().
  lavf: add avformat_close_input().
  lavf: deprecate av_close_input_stream().
  lavf doxy: add some basic demuxing documentation.
  lavf doxy: add some general lavf information.
  lavf doxy: add misc utility functions to a group.
  lavf doxy: add av_guess_codec/format to the encoding group.
  lavf doxy: add core functions to a doxy group.
  Add basic libavdevice documentation.
  lavc: convert error_recognition to err_recognition.
  avconv: update -map option help text
  x86: Require 7 registers for the cabac asm
  x86: bswap: remove test for bswap instruction
  bswap: make generic implementation more compiler-friendly
  h264: remove useless cast
  proresdec: fix decode_slice() prototype

Conflicts:
	configure
	doc/APIchanges
	ffprobe.c
	libavcodec/avcodec.h
	libavcodec/celp_math.h
	libavcodec/h264.c
	libavfilter/src_movie.c
	libavformat/anm.c
	libavformat/avformat.h
	libavformat/version.h
	libavutil/avstring.h
	libavutil/bswap.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2011-12-13 00:39:48 +01:00
Mans Rullgard
f64c2e710f bswap: make generic implementation more compiler-friendly 
With these changes, gcc 4.5 and later recognise it as a bswap
and use the proper instructions on ARM and x86.  On x86, the
16-bit bswap is recognised from gcc 4.1.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-12-12 12:14:14 +00:00
Mans Rullgard
2912e87a6c Replace FFmpeg with Libav in licence headers 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-03-19 13:33:20 +00:00
Måns Rullgård
8fc0162ac4 Add av_ prefix to bswap macros 
Originally committed as revision 24170 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-07-10 22:12:30 +00:00
Måns Rullgård
2ed6f39944 Replace many includes of libavutil/common.h with what is actually needed 
This reduces the number of false dependencies on header files and
speeds up compilation.

Originally committed as revision 22407 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-03-09 17:39:19 +00:00
Måns Rullgård
ac73f1a816 ARM: change argument/return type of bswap_16() to unsigned 32-bit 
This avoids unnecessary masking otherwise added by the compilers.

Originally committed as revision 21953 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-02-22 00:34:08 +00:00
Måns Rullgård
300ad6c16e ARM: use gcc inline asm in bswap.h only when available 
Originally committed as revision 19311 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-07-01 00:55:15 +00:00
Måns Rullgård
1e65f62e2b ARM: armcc versions of bswap_16/32 
Originally committed as revision 17830 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-03-05 21:20:10 +00:00
Aurelien Jacobs
b250f9c66d Change semantic of CONFIG_*, HAVE_* and ARCH_*. 
They are now always defined to either 0 or 1.

Originally committed as revision 16590 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-13 23:44:16 +00:00
Måns Rullgård
3a90480ac4 split bswap.h into per-arch files 
Originally committed as revision 15663 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-10-21 22:29:57 +00:00