From: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx>
All users of vb2_find_timestamp() combine it with vb2_get_buffer()
to retrieve a videobuf2 buffer, given a u64 timestamp.
Introduce an API for this use-case. Users will be converted to the new
API as follow-up commits.
Signed-off-by: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx>
Acked-by: Tomasz Figa <tfiga@xxxxxxxxxxxx>
---
drivers/media/common/videobuf2/videobuf2-v4l2.c | 12 ++++++++++++
include/media/videobuf2-v4l2.h | 10 ++++++++++
2 files changed, 22 insertions(+)
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index 075d24ebf44c..f26cb8586bd4 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -638,6 +638,18 @@ int vb2_find_timestamp(const struct vb2_queue *q, u64 timestamp,
}
EXPORT_SYMBOL_GPL(vb2_find_timestamp);
+struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp)
+{
+ unsigned int i;
+
+ for (i = 0; i < q->num_buffers; i++)
+ if (q->bufs[i]->copied_timestamp &&
+ q->bufs[i]->timestamp == timestamp)
+ return vb2_get_buffer(q, i);
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(vb2_find_buffer);
+
/*
* vb2_querybuf() - query video buffer information
* @q: videobuf queue
diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
index d818d9707695..76e405c0b003 100644
--- a/include/media/videobuf2-v4l2.h
+++ b/include/media/videobuf2-v4l2.h
@@ -78,6 +78,16 @@ struct vb2_v4l2_buffer {
int vb2_find_timestamp(const struct vb2_queue *q, u64 timestamp,
unsigned int start_idx);
+/**
+ * vb2_find_buffer() - Find a buffer with given timestamp
+ *
+ * @q: pointer to &struct vb2_queue with videobuf2 queue.
+ * @timestamp: the timestamp to find.
+ *
+ * Returns the buffer with the given @timestamp, or NULL if not found.
+ */
+struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp);
+
int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b);
/**
--
2.34.3
