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libavformat/asfdec.c:995: warning: unused variable 'gsize'

Originally committed as revision 18607 to svn://svn.ffmpeg.org/ffmpeg/trunk

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Consistent with lavc and lavf.

Originally committed as revision 29188 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

not supported.

Originally committed as revision 29187 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

swscale.h.

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PPC is normally big endian but has special little endian load/store
instructions.  Using these avoids a separate byteswap.  This makes the
vorbis decoder about 5% faster.  Not much else uses little-endian
read/write extensively.

GCC generates horrible PPC code for the default AV_[RW]B64 (which uses
a packed struct), so we override it with a plain pointer cast.

Originally committed as revision 18602 to svn://svn.ffmpeg.org/ffmpeg/trunk

ARMv6 and later support unaligned loads and stores for single
word/halfword but not double/multiple.  GCC is ignorant of this and
will always use bytewise accesses for unaligned data.  Casting to an
int32_t pointer is dangerous since a load/store double or multiple
instruction might be used (this happens with some code in FFmpeg).
Implementing the AV_[RW]* macros with inline asm using only supported
instructions gives fast and safe unaligned accesses.  ARM RVCT does
the right thing with generic code.

This gives an overall speedup of up to 10%.

Originally committed as revision 18601 to svn://svn.ffmpeg.org/ffmpeg/trunk

This changes intreadwrite.h to support per-arch implementations of the
various macros allowing us to take advantage of special instructions
or other properties the compiler does not know about.

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but is not performance-critical anyway.

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AudioObjectType. Also bump libavcodec minor version.

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