From: Helen Fornazier <helen.koike@collabora.com>
Date: Mon, 19 Jun 2017 17:00:15 +0000 (-0300)
Subject: [media] vimc: common: Add vimc_colorimetry_clamp
X-Git-Tag: v4.13-rc1~141^2~9
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=441c0db6e5a2f07f91b72e31a22a19180d28ebf5;p=karo-tx-linux.git

[media] vimc: common: Add vimc_colorimetry_clamp

Colorimetry value will always be checked in the same way. Adding a
helper macro for that

Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---

diff --git a/drivers/media/platform/vimc/vimc-common.h b/drivers/media/platform/vimc/vimc-common.h
index 60ebde28f56b..43483eecb116 100644
--- a/drivers/media/platform/vimc/vimc-common.h
+++ b/drivers/media/platform/vimc/vimc-common.h
@@ -22,6 +22,32 @@
 #include <media/media-device.h>
 #include <media/v4l2-device.h>
 
+/**
+ * struct vimc_colorimetry_clamp - Adjust colorimetry parameters
+ *
+ * @fmt:		the pointer to struct v4l2_pix_format or
+ *			struct v4l2_mbus_framefmt
+ *
+ * Entities must check if colorimetry given by the userspace is valid, if not
+ * then set them as DEFAULT
+ */
+#define vimc_colorimetry_clamp(fmt)					\
+do {									\
+	if ((fmt)->colorspace == V4L2_COLORSPACE_DEFAULT		\
+	    || (fmt)->colorspace > V4L2_COLORSPACE_DCI_P3) {		\
+		(fmt)->colorspace = V4L2_COLORSPACE_DEFAULT;		\
+		(fmt)->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;		\
+		(fmt)->quantization = V4L2_QUANTIZATION_DEFAULT;	\
+		(fmt)->xfer_func = V4L2_XFER_FUNC_DEFAULT;		\
+	}								\
+	if ((fmt)->ycbcr_enc > V4L2_YCBCR_ENC_SMPTE240M)		\
+		(fmt)->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;		\
+	if ((fmt)->quantization > V4L2_QUANTIZATION_LIM_RANGE)		\
+		(fmt)->quantization = V4L2_QUANTIZATION_DEFAULT;	\
+	if ((fmt)->xfer_func > V4L2_XFER_FUNC_SMPTE2084)		\
+		(fmt)->xfer_func = V4L2_XFER_FUNC_DEFAULT;		\
+} while (0)
+
 /**
  * struct vimc_pix_map - maps media bus code with v4l2 pixel format
  *