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  1. Oct 21, 2009
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  22. Aug 23, 2009
    • Sebastian Dröge's avatar
      a52dec: Only add the MM_ACCEL_DJBFFT flag if it's defined · f5f10797
      Sebastian Dröge authored
      It's not defined for older liba52 versions.
      f5f10797
    • Mart Raudsepp's avatar
      a52dec: Allow liba52 to use djbfft based IMDCT transform · ebfe6c07
      Mart Raudsepp authored
      liba52 in a52dec-0.7.4 does not have any MMX, MMXEXT or 3DNOW based
      IMDCT transform acceleration. It does however have a software based
      acceleration using the djbfft library (D.J. Bernstein's library for
      fourier transforms - Extremely fast library for floating-point
      convolution). So allow liba52 to use it through the MM_ACCEL_DJBFFT
      flag.
      The liba52 copy in MPlayer sources does have SSE, 3dnowext, 3dnow
      and AltiVec implementations, but those are checked for first, and
      djbfft is chosen only if none of those is available - good in the
      case of some distributions including a port of the MPlayer changes
      in their system a52dec library.
      
      The down and upmix code in liba52 doesn't seem to be disturbed by
      this additional MM_ACCEL flag and will still use MMX, SSE or 3DNOW
      versions if passed from oil_cpu_get_flags (SSE currently is not).
      
      Fixes bug #592787.
      ebfe6c07
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