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query: Document that the first allocator in the allocation query should allow mapping to system memory

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Sebastian Dröge 2013-02-25 13:24:33 +01:00
parent d50190ba55
commit e460be622d
1 changed files with 3 additions and 1 deletions
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gst/gstquery.c
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@ -1847,7 +1847,9 @@ gst_query_add_allocation_param (GstQuery * query, GstAllocator * allocator,
* allocator params array of the query's structure.
*
* If no memory allocator is specified, the downstream element can handle
* the default memory allocator.
* the default memory allocator. The first memory allocator in the query
* should be generic and allow mapping to system memory, all following
* allocators should be ordered by preference with the preferred one first.
*
* Returns: the allocator array size as a #guint.
*/