mad-dev

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682 discussions

MPEG 2.5 streams, anyone?
by Rob Leslie 16 Jan '01

16 Jan '01

Hi folks, I'm adding MPEG 2.5 support to MAD, and I'm wondering if anyone has any test streams I could use to verify that it works? Thanks, -rob

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IMDCT MLA patch
by Rob Leslie 03 Jan '01

03 Jan '01

FWIW, here's a patch to use the multiply/accumulate macros in the Layer III IMDCT. Dan, if you want, you can just write something in fixed.h to define these macros for the PowerPC. Cheers, -rob

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Re: [mad-dev] madplay on embedded PowerPC
by Andre 28 Dec '00

28 Dec '00

--- Dan Malek <dan(a)mvista.com> wrote: > So, my idea was to modify imdct36 so the mad_f_mul + mad_f_mul .... > sequences were replaced by 64-bit multiply/accumulates, then you > just round/scale once at the end (like I would do on a DSP). This > improved the performance by about 6%, and I ended up with great > compiler generated code. For example: > > t6 = > mad_f_mul(X[4], 0x0ec835e8L) + > mad_f_mul(X[13], 0x061f78aaL); > > becomes: > … [View More]

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Re: [mad-dev] madplay on embedded PowerPC
by Andre 28 Dec '00

28 Dec '00

--- Dan Malek <dan(a)mvista.com> wrote: > > > Well, I'm impressed........ > > I expected to do some serious profiling and assembler writing, > but all I did was configure and make. It runs on my wimply 50 MHz > embedded MPC860 PowerPC, uses about 80% of the CPU, NFS root file > system. It's an Embedded Planet board with a Crystal CS4218 codec > running Linux. I'm using mad-0.2.12b. > > Pretty nice. Now I have to find another holiday week project :-)… [View More]

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Re: [mad-dev] madplay on embedded PowerPC
by Andre 27 Dec '00

27 Dec '00

--- Dan Malek <dan(a)mvista.com> wrote: > Rob Leslie wrote: > > > .... Probably > > you're using the FPM_APPROX version now, > > Yes, that is what I was using. Unfortunately, the FPM_64BIT blows > my CPU budget on the baby processor, but it is close. I can crank > up the PLL and probably get a little more with some profiling. If the PPC has a 32x32=64bit multiply instruction, then FPM_64BIT shouldn't be much slower (if at all) then FPM_APPROX. Make sure … [View More]

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madplay on embedded PowerPC
by Dan Malek 26 Dec '00

26 Dec '00

Well, I'm impressed........ I expected to do some serious profiling and assembler writing, but all I did was configure and make. It runs on my wimply 50 MHz embedded MPC860 PowerPC, uses about 80% of the CPU, NFS root file system. It's an Embedded Planet board with a Crystal CS4218 codec running Linux. I'm using mad-0.2.12b. Pretty nice. Now I have to find another holiday week project :-). Thanks. -- Dan -- I like MMUs because I don't have a real life.

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simple question
by Gabriel Bouvigne 21 Dec '00

21 Dec '00

I was wondering where the left_err and right_err used for dithering are computed? Regards -- Gabriel Bouvigne - France bouvigne(a)mp3-tech.org mobile phone: gsm(a)mp3-tech.org icq: 12138873 MP3' Tech: www.mp3-tech.org personal page: gabriel.mp3-tech.org

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Fwd: [mad-dev] Re: [mad-user] MAD DLL
by ROBERTJPL＠aol.com 11 Dec '00

11 Dec '00

Hello , I keep getting many e-mails to MY e-mail address that you are supposed to be getting..

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Re: [mad-dev] Re: [mad-user] MAD DLL
by Kalani Sanders 11 Dec '00

11 Dec '00

That's going to take me longer. I'm having some problems getting everything in madplay to compile properly. Until then, you should be able to compile it under cygwin, I think. cheers Kalani Sanders "Clint Kennedy" <djslakor(a)hotmail.com> wrote: > Kalani, > > could you possibly build a project for compiling madplay also? I like to > listen to current builds and Rob has added no instructions for win32 > compilation! :-) > > thanks!

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Re: [mad-user] MAD DLL
by Kalani Sanders 11 Dec '00

11 Dec '00

I'm putting the finishing touches on a VC++ project to compile the winamp plugin, I'll see what I can do about adding a project for just the library. cheers Kalani Sanders "FunkyMan" <FunkyMan(a)myself.com> wrote: > I wanted to use the MAD decoder in my MP3 Player, but as a matter of facts, > i wasn't able to compile it under windows :-( > > has anyone build a DLL that can be used by a windows program (a kind of > LIBMAD.DLL), or anyone made a VC++ project to … [View More]

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