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3 commits

Author SHA1 Message Date
Matthew Waters 65afaf7e84 glbasememory: document some functions 2017-12-09 19:32:13 +00:00
Matthew Waters 93215927a9 glbasememory: add a generic interface for allocating GL memories 
This is made possible by a subclassable GstGLAllocationParams that holds
the allocation parameters

Every allocation would now go through gst_gl_base_memory_alloc with the
allocation parameters now being specified in a single struct to allow
extension by different allocators.
 2017-12-09 19:32:12 +00:00
Matthew Waters af7015602a gl: add a base memory object 
It handles the following
- GstAllocationParams -> gst_memory_init transformation
- Makes sure that map/unmap/create/destroy happen on the GL thread with
  a GL context current.
- Holds a possible sysmem accessible data pointer with alignment.
- Holds the need upload/download transfer state
 2017-12-09 19:32:12 +00:00