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| author | Benjamin Gaignard <benjamin.gaignard@collabora.com> | 2024-03-14 18:32:24 +0300 |
|---|---|---|
| committer | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2024-03-25 14:00:44 +0300 |
| commit | a3293a85381ec9680aa2929547fbc76c5d87a1b2 (patch) | |
| tree | 775ded5621e70cec625921830c48dc3d2c97faae /include/media/videobuf2-core.h | |
| parent | 5fb19f20926127d082d7dbc2b5c4d7b0b215ce03 (diff) | |
| download | linux-a3293a85381ec9680aa2929547fbc76c5d87a1b2.tar.xz | |
media: v4l2: Add REMOVE_BUFS ioctl
VIDIOC_REMOVE_BUFS ioctl allows to remove buffers from a queue.
The number of buffers to remove in given by count field of
struct v4l2_remove_buffers and the range start at the index
specified in the same structure.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[hverkuil: vidioc-remove-bufs.rst: mention no bufs are freed on error]
Diffstat (limited to 'include/media/videobuf2-core.h')
| -rw-r--r-- | include/media/videobuf2-core.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index b9333e2c7797..955237ac503d 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -871,6 +871,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory, int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb); /** + * vb2_core_remove_bufs() - + * @q: pointer to &struct vb2_queue with videobuf2 queue. + * @start: first index of the range of buffers to remove. + * @count: number of buffers to remove. + * + * Return: returns zero on success; an error code otherwise. + */ +int vb2_core_remove_bufs(struct vb2_queue *q, unsigned int start, unsigned int count); + +/** * vb2_core_qbuf() - Queue a buffer from userspace * * @q: pointer to &struct vb2_queue with videobuf2 queue. |