1From d86fb1667ffd8e4dcf4a6339b2a2465da560e015 Mon Sep 17 00:00:00 2001 2From: Jeffy Chen <jeffy.chen@rock-chips.com> 3Date: Thu, 12 May 2022 15:54:25 +0800 4Subject: [PATCH 7/7] libv4l: Disallow conversion by default 5 6The conversion is slow, let's disable it by default. 7 8Set env "V4L2_DISABLE_CONVERSION" to enable it. 9 10Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> 11--- 12 lib/libv4l2/libv4l2.c | 3 +++ 13 1 file changed, 3 insertions(+) 14 15diff --git a/lib/libv4l2/libv4l2.c b/lib/libv4l2/libv4l2.c 16index 949a020..bd0b207 100644 17--- a/lib/libv4l2/libv4l2.c 18+++ b/lib/libv4l2/libv4l2.c 19@@ -789,6 +789,9 @@ int v4l2_fd_open(int fd, int v4l2_flags) 20 if (dev_ops->ioctl(dev_ops_priv, fd, VIDIOC_G_PARM, &parm)) 21 parm.type = 0; 22 23+ if (!getenv("LIBV4L2_ALLOW_CONVERSION")) 24+ v4l2_flags |= V4L2_DISABLE_CONVERSION; 25+ 26 /* init libv4lconvert */ 27 if (!(v4l2_flags & V4L2_DISABLE_CONVERSION)) { 28 convert = v4lconvert_create_with_dev_ops(fd, dev_ops_priv, dev_ops); 29-- 302.20.1 31 32