From: Jonas Karlman <jo...@kwiboo.se>
This allows the cli to create a dummy drm hwcontext
that can be shared between the v4l2 decoder/scaler/encoder.
This is especially useful on older RPI3 where /dev/dri devices
are not available in the default configuration.
Signed-off-by: Jonas Karlman <jo...@kwiboo.se>
Signed-off-by: Aman Gupta <a...@tmm1.net>
---
libavutil/hwcontext_drm.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavutil/hwcontext_drm.c b/libavutil/hwcontext_drm.c
index 32cbde82eb..aa4794c5e6 100644
--- a/libavutil/hwcontext_drm.c
+++ b/libavutil/hwcontext_drm.c
@@ -43,6 +43,11 @@ static int drm_device_create(AVHWDeviceContext *hwdev, const
char *device,
AVDRMDeviceContext *hwctx = hwdev->hwctx;
drmVersionPtr version;
+ if (device == NULL) {
+ hwctx->fd = -1;
+ return 0;
+ }
+
hwctx->fd = open(device, O_RDWR);
if (hwctx->fd < 0)
return AVERROR(errno);
--
2.20.1
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