Q: Do I need to byte-swap a 'snd ' resource before passing it to the
Sound Manager SndPlay function on Windows in order for it to play correctly?
Currently I'm reading the resource into memory myself.
A: No, you don't, providing you use the Resource Manager functions to read
in the resource.
Standard Macintosh 'snd ' resources are big-endian on disk, and
native-endian in RAM (like virtually all other resources). It is the
responsibility of the Resource Manager to do the necessary flipping. The
Sound Manager assumes all 'snd ' resources come into RAM via calls to
Resource Manager functions like GetResource. If you read the resource into
memory yourself, you have bypassed this mechanism, and you will end up with
a non native-endian 'snd ' resource. Since the QuickTime & Sound Manager
API's assume the 'snd ' resource is native-endian (little-endian in this
case), they are getting very confused.
The easy way to solve this is to use the Resource Manager functions to read
in the resource. The hard way is to parse through the resource (make sure
you know about all the possible variants!) and flip the bytes yourself.
[Nov 08 1999]
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