Re: [linux-audio-dev] CDDA interface - How to convert to float? Any library?

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Subject: Re: [linux-audio-dev] CDDA interface - How to convert to float? Any library?
From: Mark Rages (markrages_AT_mlug.missouri.edu)
Date: Sun Aug 11 2002 - 03:08:09 EEST

On Sun, Aug 11, 2002 at 09:38:42AM +1000, Erik de Castro Lopo wrote:
> On Sat, 10 Aug 2002 18:32:36 -0500
> Mark Rages <markrages_AT_mlug.missouri.edu> wrote:
>
> > Ahh, I forgot CDDA is signed.
> >
> > Yes, I meant the u16 in the general sense that you picked up on.
> >
> > Well, you can try a byte-swap like this:
> >
> > #include <string.h> // for swab()
> > #include <asm/byteorder.h> // for __LITTLE_ENDIAN macro
>
> In my last replay I suggested that you not use headers like <linux/*.h>
> and in this one, I'm goint to suggest that you not use <asm/*.h> headers.
>
> You will also find __LITTLE_ENDIAN (and __BIG_ENDIAN) in <endian.h> which
> is designed to be used in user space programs.
>
> Erik

Not only that, but I screwed up the test for endianness.

Instead of

#ifdef __LITTLE_ENDIAN

it should be

#if __BYTE_ORDER == __LITTLE_ENDIAN

Regards,
Mark

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