Also move #includes into canonical order where appropriate.

Also fix #endif comments in the FFT init code.

In Little Endian the vec_ld/vec_st operations work as
expected only for byte-vectors.

This will allow for easier implementation of Altivec functions in libraries
other than libavcodec.

The Altivec IMDCT works with size 32 and higher only.

Signed-off-by: Mans Rullgard <mans@mansr.com>

According to ISO 9899:1999 S 6.5.7/4:

The result of E1 << E2 is E1 left-shifted E2 bit positions; vacated bits
are filled with zeros. If E1 has an unsigned type, the value of the
result is E1× 2^E2, reduced modulo one more than the maximum value
representable in the result type. If E1 has a signed type and
nonnegative value, and E1× 2^E2 is representable in the result type, then
that is the resulting value; otherwise, the behavior is undefined.

Signed-off-by: Mans Rullgard <mans@mansr.com>

On PPC a leaf function has a 288-byte red zone below the stack pointer,
sparing these functions the chore of setting up a full stack frame.

When a function call is disguised within an inline asm block, the
compiler might not adjust the stack pointer as required before a
function call, resulting in the red zone being clobbered.

Moving the entire function to pure asm avoids this problem and also
results in somewhat better code.

Originally committed as revision 24044 to svn://svn.ffmpeg.org/ffmpeg/trunk

This removes the need for a post-swizzle with the small FFTs.

Originally committed as revision 24025 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23962 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Loren Merritt

Originally committed as revision 23959 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch (mostly) by Loren Merritt

Originally committed as revision 23957 to svn://svn.ffmpeg.org/ffmpeg/trunk

1.8x faster than altivec radix-2 on a G4
8% faster vorbis decoding

Patch (mostly) by Loren Merritt

Originally committed as revision 23956 to svn://svn.ffmpeg.org/ffmpeg/trunk

This functionality is better accessed through tools like oprofile.

Originally committed as revision 23808 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22267 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22235 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19864 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18384 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 16684 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 16358 to svn://svn.ffmpeg.org/ffmpeg/trunk

This includes indentation changes, comment reformatting, consistent brace
placement and some prettyprinting.

Originally committed as revision 14316 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 13098 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 10640 to svn://svn.ffmpeg.org/ffmpeg/trunk

include paths in the source files.
mostly from a patch by Ronald S. Bultje, rbultje ronald.bitfreak net

Originally committed as revision 9034 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 6932 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 6606 to svn://svn.ffmpeg.org/ffmpeg/trunk

and fix GPL/LGPL version mismatches.

Originally committed as revision 6577 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 4842 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 4764 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 4749 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 2882 to svn://svn.ffmpeg.org/ffmpeg/trunk

PMCs, and with Apple's CHUD it's fairly easy too. No reason to keep useless
    code around
2) make the PPC perf stuff a configure option
3) make put_pixels16_altivec a bit faster by unrolling the loop by 4
patch by (Romain Dolbeau <dolbeau at irisa dot fr>)

Originally committed as revision 2022 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 1896 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 1509 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 1476 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 1464 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 1448 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 1423 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 1417 to svn://svn.ffmpeg.org/ffmpeg/trunk