Re: Audio Converter and Endians problem
Re: Audio Converter and Endians problem
- Subject: Re: Audio Converter and Endians problem
- From: john <email@hidden>
- Date: Tue, 28 Jan 2003 20:15:10 +0000
Hi Mark,
So is that what the sowt or whatever it is represents? If so, that
would be easy enough to add support for.
-- John
It used to be that you could download all of the headers from the
Apple Developer Support web site, though they're going to be in
StuffIt file or .smi disk image, so if you can't expand that, then
it's not going to do you any good. Search around on the Apple
Developer web site, the headers might still be there. They used to be
in the MPW SDK, though I believe that MPW has given way to Project
Builder, so you might just have to download that and see if you can
expand it to get to the headers.
You can read an AIFF or AIFC file on a PC just as easily as a Mac can
read a WAVE file (in fact, a WAVE file and an AIFF file look very
similar).
An AIFF and AIFC file have all of its fields described with big endian
values, but an AIFC file also describes a compressed data section.
Once you get to the DATA section, you have to interpret it with the
knowledge gained from parsing the format section of the AIFC. For
purposes of making things simple, endian conversion is considered to
be a compression, which is why it requires an AIFC file to contain it.
In this case that means you parse the format to know that the data is
little endian format, and then reading it as little endian data.
--
Mark Cookson
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