From 7df4add68e15cc0286ac14335a32617ae84fc2d4 Mon Sep 17 00:00:00 2001 From: Jeffy Chen Date: Thu, 12 May 2022 15:54:25 +0800 Subject: [PATCH 9/9] libv4l: Disallow conversion by default The conversion is slow, let's disable it by default. Set env "V4L2_DISABLE_CONVERSION" to enable it. Signed-off-by: Jeffy Chen --- lib/libv4l2/libv4l2.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/lib/libv4l2/libv4l2.c b/lib/libv4l2/libv4l2.c index 949a020..bd0b207 100644 --- a/lib/libv4l2/libv4l2.c +++ b/lib/libv4l2/libv4l2.c @@ -789,6 +789,9 @@ int v4l2_fd_open(int fd, int v4l2_flags) if (dev_ops->ioctl(dev_ops_priv, fd, VIDIOC_G_PARM, &parm)) parm.type = 0; + if (!getenv("LIBV4L2_ALLOW_CONVERSION")) + v4l2_flags |= V4L2_DISABLE_CONVERSION; + /* init libv4lconvert */ if (!(v4l2_flags & V4L2_DISABLE_CONVERSION)) { convert = v4lconvert_create_with_dev_ops(fd, dev_ops_priv, dev_ops); -- 2.20.1