libv4l2: Support output devices too

Now that we support plugins it makes sense to also wrap output devices,
so that we can use plugins with them too.

Remark, we should probably add a write() callback to the dev_ops,
and a libv4l2_write function too ?

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

diff --git a/lib/libv4l2/libv4l2.c b/lib/libv4l2/libv4l2.c
index e975a65..04689b8 100644 (file)
--- a/lib/libv4l2/libv4l2.c
+++ b/lib/libv4l2/libv4l2.c
@@ -617,13 +617,6 @@ int v4l2_fd_open(int fd, int v4l2_flags)
                return -1;
        }
 
-       /* we only add functionality for video capture devices */
-       if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE) ||
-           !(cap.capabilities & (V4L2_CAP_STREAMING | V4L2_CAP_READWRITE))) {
-               v4l2_plugin_cleanup(plugin_library, dev_ops_priv, dev_ops);
-               return fd;
-       }
-
        /* Get current cam format */
        fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
        if (dev_ops->ioctl(dev_ops_priv, fd, VIDIOC_G_FMT, &fmt)) {