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[media] media: Introduce internal index for media entities

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The internal index can be used internally by the framework in order to keep
track of entities for a purpose or another. The internal index is constant
while it's registered to a media device, but the same index may be re-used
once the entity having that index is unregistered.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Sakari Ailus
2015-12-16 11:32:17 -02:00
committed by Mauro Carvalho Chehab
parent 1630b83235
commit 665faa971d
3 changed files with 24 additions and 0 deletions
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3
include/media/media-entity.h
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@@ -157,6 +157,8 @@ struct media_entity_operations {
* @num_pads: Number of sink and source pads.
* @num_links: Total number of links, forward and back, enabled and disabled.
* @num_backlinks: Number of backlinks
* @internal_idx: An unique internal entity specific number. The numbers are
* re-used if entities are unregistered or registered again.
* @pads: Pads array with the size defined by @num_pads.
* @links: List of data links.
* @ops: Entity operations.
@@ -183,6 +185,7 @@ struct media_entity {
u16 num_pads;
u16 num_links;
u16 num_backlinks;
int internal_idx;
struct media_pad *pads;
struct list_head links;