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