From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Add a new helper function that returns true if a media_request
contains buffers.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
drivers/media/common/videobuf2/videobuf2-core.c | 17 +++++++++++++++++
include/media/videobuf2-core.h | 15 +++++++++++++++
2 files changed, 32 insertions(+)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 31b86bfa52bd..42854242405f 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -1344,6 +1344,23 @@ static const struct media_request_object_ops vb2_core_req_ops = {
.release = vb2_req_release,
};
+bool vb2_request_object_is_buffer(struct media_request_object *obj)
+{
+ return obj->ops == &vb2_core_req_ops;
+}
+EXPORT_SYMBOL_GPL(vb2_request_object_is_buffer);
+
+bool vb2_request_has_buffers(struct media_request *req)
+{
+ struct media_request_object *obj;
+
+ list_for_each_entry(obj, &req->objects, list)
+ if (vb2_request_object_is_buffer(obj))
+ return true;
+ return false;
+}
+EXPORT_SYMBOL_GPL(vb2_request_has_buffers);
+
int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb,
struct media_request *req)
{
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 72663c2a3ba3..9e332969826b 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -1158,4 +1158,19 @@ bool vb2_buffer_in_use(struct vb2_queue *q, struct vb2_buffer *vb);
*/
int vb2_verify_memory_type(struct vb2_queue *q,
enum vb2_memory memory, unsigned int type);
+
+/**
+ * vb2_request_object_is_buffer() - return true if the object is a buffer
+ *
+ * @obj: the request object.
+ */
+bool vb2_request_object_is_buffer(struct media_request_object *obj);
+
+/**
+ * vb2_request_has_buffers() - return true if the request contains buffers
+ *
+ * @req: the request.
+ */
+bool vb2_request_has_buffers(struct media_request *req);
+
#endif /* _MEDIA_VIDEOBUF2_CORE_H */
--
2.17.0
