libpisp: helpers: Unify on the multiplanar YUV V4L2 formats

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

Author: 6by9

src/helpers/v4l2_device.cpp

@@ -37,8 +37,8 @@ static FormatInfo get_v4l2_format(const std::string &format)
 		{ "RGB888", { V4L2_PIX_FMT_RGB24, 1 } },
 		{ "RGBX8888", { V4L2_PIX_FMT_RGBX32, 1 } },
 		{ "XRGB8888", { V4L2_PIX_FMT_XRGB32, 1 } },
-		{ "YUV420P", { V4L2_PIX_FMT_YUV420, 1 } },
-		{ "YUV422P", { V4L2_PIX_FMT_YUV422P, 1 } },
+		{ "YUV420P", { V4L2_PIX_FMT_YUV420M, 3 } },
+		{ "YUV422P", { V4L2_PIX_FMT_YUV422M, 3 } },
 		{ "YUV444P", { V4L2_PIX_FMT_YUV444M, 3 } },
 		{ "YUYV", { V4L2_PIX_FMT_YUYV, 1 } },
 		{ "UYVY", { V4L2_PIX_FMT_UYVY, 1 } },