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* Attach Meson64 to mainline with a bunch of patches. Tested, but need further work. * Enable DVFS on N2 which sometimes works, sometime doesn't, cleanup * Enable beta targets for Meson64 kernel family * Bump with version
70 lines
2.1 KiB
Diff
70 lines
2.1 KiB
Diff
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vb2_request_get_buf() returns the N-th buffer attached to a media
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request.
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Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
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---
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Changes in v3:
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* None
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Changes in v2:
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* Adjust the kernel doc as suggested by Hans
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---
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.../media/common/videobuf2/videobuf2-core.c | 23 +++++++++++++++++++
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include/media/videobuf2-core.h | 11 +++++++++
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2 files changed, 34 insertions(+)
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diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
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index 4489744fbbd9..c4c7980dcb0d 100644
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--- a/drivers/media/common/videobuf2/videobuf2-core.c
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+++ b/drivers/media/common/videobuf2/videobuf2-core.c
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@@ -1416,6 +1416,29 @@ unsigned int vb2_request_buffer_cnt(struct media_request *req)
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}
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EXPORT_SYMBOL_GPL(vb2_request_buffer_cnt);
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+struct vb2_buffer *vb2_request_get_buf(struct media_request *req,
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+ unsigned int n)
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+{
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+ struct media_request_object *obj;
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+ struct vb2_buffer *buf = NULL;
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+ unsigned int nbufs = 0;
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+ unsigned long flags;
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+
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+ spin_lock_irqsave(&req->lock, flags);
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+ list_for_each_entry(obj, &req->objects, list) {
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+ if (!vb2_request_object_is_buffer(obj) ||
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+ nbufs++ < n)
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+ continue;
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+
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+ buf = container_of(obj, struct vb2_buffer, req_obj);
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+ break;
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+ }
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+ spin_unlock_irqrestore(&req->lock, flags);
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+
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+ return buf;
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+}
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+EXPORT_SYMBOL_GPL(vb2_request_get_buf);
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+
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int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb)
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{
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struct vb2_buffer *vb;
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diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
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index a2b2208b02da..6206e25df764 100644
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--- a/include/media/videobuf2-core.h
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+++ b/include/media/videobuf2-core.h
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@@ -1225,4 +1225,15 @@ bool vb2_request_object_is_buffer(struct media_request_object *obj);
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*/
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unsigned int vb2_request_buffer_cnt(struct media_request *req);
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+/**
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+ * vb2_request_get_buf() - return the buffer at index @idx
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+ *
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+ * @req: the request.
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+ * @n: search for the Nth buffer in the req object list
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+ *
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+ * Return a vb2 buffer or NULL if there's no buffer at the specified position
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+ */
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+struct vb2_buffer *vb2_request_get_buf(struct media_request *req,
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+ unsigned int n);
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+
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#endif /* _MEDIA_VIDEOBUF2_CORE_H */
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