[Buildroot] [PATCH 04/10] wavpack: new package
Peter Korsgaard
jacmet at uclibc.org
Thu Jan 20 12:19:10 UTC 2011
>>>>> "Gustavo" == Gustavo Zacarias <gustavo at zacarias.com.ar> writes:
Hi,
Gustavo> +++ b/package/multimedia/wavpack/Config.in
Gustavo> @@ -0,0 +1,10 @@
Gustavo> +config BR2_PACKAGE_WAVPACK
Gustavo> + bool "wavpack"
Gustavo> + help
Gustavo> + WavPack is a completely open audio compression format providing
Gustavo> + lossless, high-quality lossy, and a unique hybrid compression mode.
Gustavo> +
Gustavo> + Works on softfloat but it's not recommended since it uses
Gustavo> + a big deal of CPU power.
CPUs without HW FPU are not necessarily low performance for integer
calculations. I don't know anything about wavpack, but from the
wikipedia page it seems like it doesn't use much FPU:
No floating-point arithmetic is used in WavPack's data path because,
according to the author, integer operations are less susceptible to
subtle chip-to-chip variations that could corrupt the lossless nature of
the compression (the Pentium floating point bug being an example). It is
possible that a lossless compressor that used floating-point math could
generate different output when running on that faulty Pentium. Even
disregarding actual bugs, floating-point math is complicated enough that
there could be subtle differences between "correct" implementations that
could cause trouble for this type of application.
So I would just drop this sentence.
--
Bye, Peter Korsgaard
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