CODEWITHSUNDEEP
filterdirectshowtransfer
Rella
Rella

Reputation: 66975

What DirectShow uses for data transfer between filters?

What does DirectShow use for data transfer between filters? (pipes or what)

Upvotes: 1

Views: 191

Answers (1)

lornova
lornova

Reputation: 6943

DirectShow handles data chunks in "media samples", which are simply buffers, implemented through the IMediaSample COM interface. To allocate samples is used a COM-based memory manager, the IMemAllocator interface, that should be implement by filters. To transfer samples is used the method IMemAllocator::GetBuffer.

Fully documented there: Data Flow in the Filter Graph

Upvotes: 2

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