From 9d042e457ef8e3f883f0cba8a1eed633906deb78 Mon Sep 17 00:00:00 2001 From: Ezequiel Garcia Date: Mon, 11 Jul 2022 22:11:34 +0100 Subject: [PATCH] media: videobuf2: Introduce vb2_find_buffer() 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 Acked-by: Tomasz Figa Reviewed-by: Philipp Zabel Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- 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 075d24e..f26cb85 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 d818d97..76e405c 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); /** -- 2.7.4