From 72b603357ae461c0f19ca05d6624b4afd5c74b47 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 31 Aug 2022 16:13:31 +0200 Subject: media: mc: entity: Add media_entity_pipeline() to access the media pipeline Replace direct access to the pipe field in drivers with a new helper function. This will allow easier refactoring of media pipeline handling in the MC core behind the scenes without affecting drivers. Signed-off-by: Laurent Pinchart Signed-off-by: Tomi Valkeinen Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- include/media/media-entity.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include') diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 1030e45e8ee6..aaf276f765cf 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -948,6 +948,24 @@ static inline bool media_entity_is_streaming(const struct media_entity *entity) return entity->pipe; } +/** + * media_entity_pipeline - Get the media pipeline an entity is part of + * @entity: The entity + * + * This function returns the media pipeline that an entity has been associated + * with when constructing the pipeline with media_pipeline_start(). The pointer + * remains valid until media_pipeline_stop() is called. + * + * In general, entities can be part of multiple pipelines, when carrying + * multiple streams (either on different pads, or on the same pad using + * multiplexed streams). This function is to be used only for entities that + * do not support multiple pipelines. + * + * Return: The media_pipeline the entity is part of, or NULL if the entity is + * not part of any pipeline. + */ +struct media_pipeline *media_entity_pipeline(struct media_entity *entity); + /** * media_entity_get_fwnode_pad - Get pad number from fwnode * -- cgit v1.2.3-59-g8ed1b