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    Subject[PATCH 1/8] videobuf2: Introduce vb2_find_buffer()
    Date
    From: Ezequiel Garcia <ezequiel@collabora.com>

    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@collabora.com>
    ---
    include/media/videobuf2-v4l2.h | 18 ++++++++++++++++++
    1 file changed, 18 insertions(+)

    diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
    index d818d9707695..7f9ae5b39b78 100644
    --- a/include/media/videobuf2-v4l2.h
    +++ b/include/media/videobuf2-v4l2.h
    @@ -78,6 +78,24 @@ 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.
    + */
    +static inline struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q,
    + u64 timestamp)
    +{
    + int index = vb2_find_timestamp(q, timestamp, 0);
    +
    + if (index < 0)
    + return NULL;
    + return vb2_get_buffer(q, index);
    +}
    +
    int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b);

    /**
    --
    2.34.3
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