From 441c0db6e5a2f07f91b72e31a22a19180d28ebf5 Mon Sep 17 00:00:00 2001
From: Helen Fornazier <helen.koike@collabora.com>
Date: Mon, 19 Jun 2017 14:00:15 -0300
Subject: [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>
---
drivers/media/platform/vimc/vimc-common.h | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
(limited to 'drivers/media/platform/vimc/vimc-common.h')
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
*
--
cgit