3.9 Buffers

8.16.0.4

Buffers are the basic unit of data transfer of GStreamer. Buffers contain blocks of memory.

procedure
(buffer? v) → boolean?
v : any/c

Returns #t if v is a buffer containing media data, #f otherwise.

Memory in GStreamer are lightweight objects wrapping a region of memory. They are used to manage the data within a buffer.

procedure
(memory? v) → boolean?
v : any/c

Returns #t if v is an object referencing a region of memory containing media data, #f otherwise.

A media sample is a small object associating a buffer with a media type in the form of caps.

procedure
(sample? v) → boolean?
v : any/c

Returns #t if v is a media sample, #f otherwise.