MJPEG Tools Svn

synchronized AltiVec code with changes to mpeg2enc

pass intra_q and inter_q to enable_quantize_altivec

quant_weight_coeff_sum has been split into quant_weight_coeff_intra
and quant_weight_coeff_inter

Sensible default of 1 for packets-per-pack
Fixed out-by-one error causing non-alignment of first (I) picture after
a sequence split.

New accurate IEEE-1180 compliant AltiVec optimized IDCT

Fixed dimensioning of B encoding job ring buffer one too small!

Added: unit coefficient block zeroing
Added: Control to select number of B frames to generate between reference frames
Fixed: reduced memory usage when no GOP size look-ahead is being performed

Further restructured low-level support and SIMD selection to
encapsulate it away from the main encoder.
Fixed nasty little source of non-determinist / compiler dependent
bahviour in the quantisation routines.
Remove references to the global syntax parameters from the lowelevel C / asm
routines.

Fixed a few old left-overs from earlier debugging that had turned off SIMD
quantisation on x86 machines.

Add new utility yuv4mpeg. Simple but useful program to add YUV4MPEG2 headers
to raw data (from ffmpeg) - see the comments in the source file for examples
of usage.

Remove unused variables, get rid of warnings by adding return type for main() and prototype for usage()