[media] V4L: add two new ioctl()s for multi-size videobuffer management

A possibility to preallocate and initialise buffers of different sizes
in V4L2 is required for an efficient implementation of a snapshot
mode. This patch adds two new ioctl()s: VIDIOC_CREATE_BUFS and
VIDIOC_PREPARE_BUF and defines respective data structures.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
index dd9f1e7b8ff7..4d1c74ad4c84 100644
--- a/include/media/v4l2-ioctl.h
+++ b/include/media/v4l2-ioctl.h
@@ -122,6 +122,8 @@ struct v4l2_ioctl_ops {
         int (*vidioc_qbuf)    (struct file *file, void *fh, struct v4l2_buffer *b);
         int (*vidioc_dqbuf)   (struct file *file, void *fh, struct v4l2_buffer *b);
 
+        int (*vidioc_create_bufs)(struct file *file, void *fh, struct v4l2_create_buffers *b);
+        int (*vidioc_prepare_buf)(struct file *file, void *fh, struct v4l2_buffer *b);
 
         int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i);
         int (*vidioc_g_fbuf)   (struct file *file, void *fh,