[Pixman] image byte order?

[Jonathan Morton]

On Thu, 11 Oct 2012 12:56:57 +0200, Gerd Hoffmann <kraxel at redhat.com>
wrote:
> How are the 32bpp image formats like PIXMAN_x8r8g8b8 defined to look
> like in memory?  Fixed format, i.e. always the same no matter whenever
> the box is big or little endian?  Or native endian?

Native endian.  The format is defined in terms of bitfields in a 32-bit
integer.  The 16-bit formats (such as r5g6b5) are also defined
similarly.  The 24-bit formats are not.

So to convert to or from a particular on-disk image format, or one
which is defined in terms of bytes (as OpenGL does), you could use
ntohl() and htonl() from the sockets subsystem.

-- 
From: Jonathan Morton
      jonathan.morton at movial.com