New portable Musepack decoder library, including fixed-point mode Options

[Peter]

UPDATE: source posted here is outdated now, newer version is hosted on musepack.net.

Full C++ source in post attachement.

License: LGPL.

Features:
- Switchable fixed-point and floating-point modes - enable/disable "#define MPC_FIXED_POINT" in mpc_math.h
- Endian-safe, verified running correctly on big-endian machines
- Multiinstance and multithread safe
- File access callbacks
- No assembly code used, for full portability

Verified correctly compiling/running under:
- win32 / x86 / MSVC6 + SP5 + processor pack - very fast floating-point mode (goes above 200x on ~2GHz machines), fixed-point mode is significantly slower (~60x)
- win32 / x86 / MSVC7.1 - slightly faster than MSVC6, fixed-point mode still relatively slow
- win32 / x86 / DMCPP - fixed-point mode faster than MSVC, floating-point mode slower than expected with strange slowdowns when compiled with speed optimizations enabled
- wince / ARM (32bit) / eVC4 + SP3 - fixed-point decoding speed on 400MHz XScale CPU is about 10x realtime
- Darwin 7.3.0, MacOS X 10.3.3 / PowerPC970/G5 / GCC 3.3 - about 80x-100x decoding speed in both modes on 2GHz G5, thanks to TrNSZ for testing/feedback

I'm planning to put this in official MPC CVS, unfortunately I can't do that right now because corecodec server has been down for serveral days.

Attached File(s)

 mpcdec.zip ( 45.56K ) Number of downloads: 1809

 

[Sebastian Anders...]

Hello!

Is there any way to get the bits per sample (BPS) from the MusePack file?

Regards,
Sebastian Andersson

[Sebastian Anders...]

Hello!

Is there any way to get the bits per sample (BPS) from the MusePack file?

Regards,
Sebastian Andersson

In this case, I need it for a function used by a BASS add-on (www.un4seen.com). But other reasons could be, to fill up the WAVEFORMAT structure with the proper information or whatever.