linux-kernel - [RFC PATCH v6 08/11] media: mediabus: Add helpers to convert a ext_pix format to/from a mbus

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Date:   Thu, 14 Jan 2021 15:07:35 -0300
From:   Helen Koike <helen.koike@...labora.com>
To:     linux-media@...r.kernel.org
Cc:     hverkuil@...all.nl, mchehab@...nel.org, hans.verkuil@...co.com,
        laurent.pinchart@...asonboard.com, sakari.ailus@....fi,
        boris.brezillon@...labora.com, hiroh@...omium.org,
        nicolas@...fresne.ca, Brian.Starkey@....com, kernel@...labora.com,
        narmstrong@...libre.com, linux-kernel@...r.kernel.org,
        frkoenig@...omium.org, stanimir.varbanov@...aro.org,
        tfiga@...omium.org
Subject: [RFC PATCH v6 08/11] media: mediabus: Add helpers to convert a ext_pix format to/from a mbus_fmt

Just a new version of v4l2_fill_mbus_format() and v4l2_fill_ext_pix_format()
to deal with the new v4l2_ext_pix_format struct.
This is needed to convert the VIMC driver to the EXT_FMT/EXT_BUF iocts.

Signed-off-by: Boris Brezillon <boris.brezillon@...labora.com>
Signed-off-by: Helen Koike <helen.koike@...labora.com>
---
Changes in v6:
- Rename v4l2_fill_ext_pix_format() to v4l2_fill_ext_pix_format_from_mbus() (Tomasz)

Changes in v4:
- Add helper v4l2_fill_ext_pix_format()
- Rebased on top of media/master (post 5.8-rc1)

Changes in v3:
- Rebased on top of media/master (post 5.4-rc1)

Changes in v2:
- New patch
---
 include/media/v4l2-mediabus.h | 42 +++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/include/media/v4l2-mediabus.h b/include/media/v4l2-mediabus.h
index 841e190aedd9..055e2abbc1dd 100644
--- a/include/media/v4l2-mediabus.h
+++ b/include/media/v4l2-mediabus.h
@@ -209,4 +209,46 @@ v4l2_fill_mbus_format_mplane(struct v4l2_mbus_framefmt *mbus_fmt,
 	mbus_fmt->xfer_func = pix_mp_fmt->xfer_func;
 }
 
+/**
+ * v4l2_fill_ext_pix_format_from_mbus - Ancillary routine that fills a &struct
+ *     v4l2_ext_pix_format fields from a &struct v4l2_mbus_framefmt.
+ *
+ * @pix_fmt:   pointer to &struct v4l2_ext_pix_format to be filled
+ * @mbus_fmt:  pointer to &struct v4l2_mbus_framefmt to be used as model
+ */
+static inline void
+v4l2_fill_ext_pix_format_from_mbus(struct v4l2_ext_pix_format *pix_fmt,
+				   const struct v4l2_mbus_framefmt *mbus_fmt)
+{
+	pix_fmt->width = mbus_fmt->width;
+	pix_fmt->height = mbus_fmt->height;
+	pix_fmt->field = mbus_fmt->field;
+	pix_fmt->colorspace = mbus_fmt->colorspace;
+	pix_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc;
+	pix_fmt->quantization = mbus_fmt->quantization;
+	pix_fmt->xfer_func = mbus_fmt->xfer_func;
+}
+
+/**
+ * v4l2_fill_mbus_format_ext - Ancillary routine that fills a &struct
+ *     v4l2_mbus_framefmt from a &struct v4l2_ext_pix_format.
+ *
+ * @mbus_fmt:  pointer to &struct v4l2_mbus_framefmt to be filled
+ * @pix_fmt:   pointer to &struct v4l2_ext_pix_format to be used as model
+ * @code:      data format code (from &enum v4l2_mbus_pixelcode)
+ */
+static inline void
+v4l2_fill_mbus_format_ext(struct v4l2_mbus_framefmt *mbus_fmt,
+			  const struct v4l2_ext_pix_format *pix_fmt, u32 code)
+{
+	mbus_fmt->width = pix_fmt->width;
+	mbus_fmt->height = pix_fmt->height;
+	mbus_fmt->field = pix_fmt->field;
+	mbus_fmt->colorspace = pix_fmt->colorspace;
+	mbus_fmt->ycbcr_enc = pix_fmt->ycbcr_enc;
+	mbus_fmt->quantization = pix_fmt->quantization;
+	mbus_fmt->xfer_func = pix_fmt->xfer_func;
+	mbus_fmt->code = code;
+}
+
 #endif
-- 
2.29.2