Tremor

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Tremor is a fixed-point version of the Ogg Vorbis decoder for those platforms that can't do floating point math.

Platforms

Texas Instruments TMS320C55x DSP Family

Download the generic lowmem source using Subversion. This is probably the version you want to start working with for a DSP.

svn co http://svn.xiph.org/branches/lowmem-branch/Tremor/

There is also a no-byte branch for platforms whose smallest data unit is larger than 8 bits.

Required / Suggested Changes to the code as downloaded:

  • Roland Wintersteller's various fixes

See the mailing list entry

  • Johannes Sandvall's performance improvements

See the mailing list entry or just download

  • alloca removal

The TI compiler does not support this.

  • misc compiler warning fixes
  • hooks to TI DSPLIB functions cfft3216_NOSCALE and cbrev32

These are part of the TI DSPLIB which can be downloaded from the TI website.

Links

Retrieved from "http://wiki.xiph.org/Tremor"
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