@@ -1679,12 +1679,15 @@ PixelFormat V4L2VideoDevice::toPixelFormat(V4L2PixelFormat v4l2Fourcc)
case V4L2_PIX_FMT_NV21M:
return PixelFormat(DRM_FORMAT_NV21);
+ /* Greyscale formats. */
+ case V4L2_PIX_FMT_GREY:
+ return PixelFormat(DRM_FORMAT_R8);
+
/* Compressed formats. */
case V4L2_PIX_FMT_MJPEG:
return PixelFormat(DRM_FORMAT_MJPEG);
/* V4L2 formats not yet supported by DRM. */
- case V4L2_PIX_FMT_GREY:
default:
/*
* \todo We can't use LOG() in a static method of a Loggable
@@ -1764,6 +1767,10 @@ V4L2PixelFormat V4L2VideoDevice::toV4L2PixelFormat(const PixelFormat &pixelForma
case DRM_FORMAT_NV21:
return V4L2PixelFormat(V4L2_PIX_FMT_NV21);
+ /* Greyscale formats. */
+ case DRM_FORMAT_R8:
+ return V4L2PixelFormat(V4L2_PIX_FMT_GREY);
+
/* Compressed formats. */
case DRM_FORMAT_MJPEG:
return V4L2PixelFormat(V4L2_PIX_FMT_MJPEG);
DRM has a format for 8-bit greyscale data, DRM_FORMAT_R8. Despite the 'R' name, which comes from GL/Vulkan to mean single-channel data, the format maps to greyscale for display. We can thus map it to V4L2_PIX_FMT_GREY. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> --- Changes since v2: - Rebase on top of PixelFormat class --- src/libcamera/v4l2_videodevice.cpp | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)