overflow, the last known possible overflow


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registers to keep everything in registers


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remove brain aputated mmx wrapers around sse2 macros
fix name of ..._sub macro to match ..._add naming


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(patch for plain mmx support is welcome ...)


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note, the code likely can overflow and thus needs some more changes
sse2 updated too but disabled as its untested


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the old 32bit code)
disable mmx/sse2 optimizations as they need a rewrite now


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when AltiVec is enabled anyway.


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--disable-demuxer=dv1394 should be used instead

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gcc-specific directive a few lines below.


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directives are aimed at idiosyncracies of Apple's gcc version.


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directives are aimed at idiosyncracies of Apple's gcc version.


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way to tell the decoder how many output channels we would like.


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negligible increase in quality


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