Subject: Re: Build problem with cygwin/mingw - msg#00004

Previous Message by Date:

Re: how must I align buffers passed to mad_stream_buffer?

On Sat, 2003-11-15 at 09:18, Jedediah Smith wrote: > My decoder uses an arbitrary buffer length and passes data blocks of this > size, read from the MP3 file, to mad_stream_buffer. However, MAD throws a > "lost synchronization" error immediately after returning from the input > callback which feeds the data to mad_stream_buffer. The resulting decoded > audio has artifacts at the equivelant locations. > > Clearly mad expects the MP3 data to be aligned, perhaps on frame > boundaries, but I can't find any mention of this in the source comments. I'll save Rob the trouble of repeating himself and quote what he wrote to me when I asked the same question: "Each time you refill your buffer, you need to preserve the data in your existing buffer from stream.next_frame to the end. "This usually amounts to calling memmove() on this unconsumed portion of the buffer and appending new data after it, before calling mad_stream_buffer()" Josh

Next Message by Date:

How to unroll the imdct??

The IMDCT function in MAD seems not easy to understand. Rob Leslie says that it is custom unrolled and factorized implementation. But I still don't know how ... Would you please tell me about the IMDCT algorithm in MAD or any reference documents? Thank you very much!!   -- forks forks.tw@xxxxxxxxxxxx Do you Yahoo!? Free Pop-Up Blocker - Get it now

Previous Message by Thread:

Re: [mad-user] Build problem with cygwin/mingw

This doesn't work.. error looks like this: /usr/bin/install -c .libs/libmad.lai c:\source\vc\mixer\libmad/lib/libmad.la /usr/bin/install: cannot create regular file `c:sourcevcmixerlibmad/lib/libmad.la': No such file or directory Those windows paths just aren't making it through everything without getting mangled. How exactly would I install manually? Just copy libmad.a? On Fri, 14 Nov 2003 14:22:02 -0800, Rob Leslie <rob@xxxxxxxx> wrote: [Note Reply-To.] On Nov 14, 2003, at 12:52 PM, Jedediah Smith wrote: Following steps were followed: ./configure --host=mingw32 --prefix==/cygdrive/c/source/vc/mixer/libmad Configure step goes fine. The prefix is the dir I want to install to e.g. c:\source\vc\mixer\libmad which already exists. [...] ranlib /cygdrive/c/source/vc/mixer/libmad/lib/libmad.a c:\mingw\bin\ranlib.exe: /cygdrive/c/source/vc/mixer/libmad/lib/libmad.a: No such file or directory [...] It looks like ranlib is being passed the cygwin version of the path but it doesn't recognize it as it's part of mingw and only allows normal Windows paths. What shall I do about this? I think both Cygwin and Mingw understand Windows paths, so try: ./configure --host=mingw32 --prefix='C:\\source\\vc\\mixer\\libmad' If not you can just install the library by hand; libmad doesn't hardcode any paths from the configured prefix, so it's safe to omit.

Next Message by Thread:

How to unroll the imdct??

The IMDCT function in MAD seems not easy to understand. Rob Leslie says that it is custom unrolled and factorized implementation. But I still don't know how ... Would you please tell me about the IMDCT algorithm in MAD or any reference documents? Thank you very much!!   -- forks forks.tw@xxxxxxxxxxxx Do you Yahoo!? Free Pop-Up Blocker - Get it now