[gmpi] Re: Topic 7: Audio packaging
- From: RonKuper@xxxxxxxxxxxx
- To: gmpi@xxxxxxxxxxxxx
- Date: Mon, 2 Jun 2003 09:15:15 -0400
Chris Grigg wrote on Wednesday
>>>
Seems as though you might want to make this a per-buffer property
under plug control, called something like always-feed, so that the
host can know whether or not there's a need to provide a zero-buffer
when the user hasn't connected a source for that buffer.
<<<
Definitely, it needs to be per buffer property.
Also, there's a cute way to implement this that allows a plugin to not care
about magic zero fill if it doesn't want to. You do something like this:
class AudioBuffer
{
bool IsZero() const;
void SetZero( bool );
float* GetPointer();
float* GetRawPointer();
};
All AudioBuffers are created by an allocator that knows (or doesn't<g> about
zero fill. If a plugin wants, it can ask IsZero() everywhere to bypass
processing. It it doesn't care, it can call GetPointer(). GetPointer()
will zerofill before returning the buffer if the buffer is tagged as zero.
(Use GetRawPointer to avoid the magic.)
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