idct_put for compilers/architectures that can not align stack variables that much.
This is also consistent with similar code in eatgq.c


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Might avoid crashes in unlikely cases, but mostly avoids ugly artefacts
for partial frames.


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for idct_put on architectures/compilers that have problems aligning on the stack.


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This ensures that the MMX loop filter is always bitexact with the C version.

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in libavcodec/colorspace.h.


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Fixes issue1102.


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changeing calls to sub_left_prediction such that 
the source frame data pointers are no longer offset to skip the initial 
elements. This keeps them properly aligned for the subsequent call to diff_bytes.
Changes encoding offset to compensate.

Mailing list thread: 
https://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2009-May/069952.html


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in the source data array to start encoding.
Change all calls to pass zero for this new argument for equivalent behavior.

This is a restructure to support a forthcoming bug fix.


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current ref is technically more correct though.


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fix hdlr descr in mp4 which use c string, patch by Larbi Joubala, larbi dot joubala at resonate-mp4 dot com

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setting mb_height for interlaced mpeg-2 encoding.


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MLP DSP functions x86-optimized.
12.59% overall speedup in x86_32
 9.98% overall speedup in x86_64
compared to gcc 4.3.3

It breaks on x86_64 with PIC because the MANGLE macro appends (%%rip), which
is not wanted for labels.


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12.59% overall speedup in x86_32
 9.98% overall speedup in x86_64
compared to gcc 4.3.3


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libavcodec/colorspace.h.


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it is aligned as necessary for DSPContext's idct_put.
Just aligning it on the stack would have been possible but less reliable
and without any real benefit.


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dequantization 24-bit in a separate commit.


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