From abbd1a3b585c685426196f066ad7fd417ed730a0 Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Wed, 19 May 2010 00:15:52 +0200
Subject: Initial import

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 subdev.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 subdev.c

(limited to 'subdev.c')

diff --git a/subdev.c b/subdev.c
new file mode 100644
index 0000000..224b066
--- /dev/null
+++ b/subdev.c
@@ -0,0 +1,96 @@
+/*
+ * Media controller test application
+ *
+ * Copyright (C) 2010 Ideas on board SPRL <laurent.pinchart@ideasonboard.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ */
+
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <linux/v4l2-subdev.h>
+
+#include "media.h"
+#include "subdev.h"
+
+static int v4l2_subdev_open(struct media_entity *entity)
+{
+	if (entity->fd != -1)
+		return 0;
+
+	entity->fd = open(entity->devname, O_RDWR);
+	if (entity->fd == -1) {
+		printf("%s: Failed to open subdev device node %s\n", __func__,
+			entity->devname);
+		return errno;
+	}
+
+	return 0;
+}
+
+int v4l2_subdev_get_format(struct media_entity *entity,
+	struct v4l2_mbus_framefmt *format, unsigned int pad,
+	enum v4l2_subdev_format which)
+{
+	struct v4l2_subdev_pad_format fmt;
+	int ret;
+
+	ret = v4l2_subdev_open(entity);
+	if (ret < 0)
+		return ret;
+
+	memset(&fmt, 0, sizeof(fmt));
+	fmt.pad = pad;
+	fmt.which = which;
+
+	ret = ioctl(entity->fd, VIDIOC_SUBDEV_G_FMT, &fmt);
+	if (ret < 0)
+		return errno;
+
+	*format = fmt.format;
+	return 0;
+}
+
+int v4l2_subdev_set_format(struct media_entity *entity,
+	struct v4l2_mbus_framefmt *format, unsigned int pad,
+	enum v4l2_subdev_format which)
+{
+	struct v4l2_subdev_pad_format fmt;
+	int ret;
+
+	ret = v4l2_subdev_open(entity);
+	if (ret < 0)
+		return ret;
+
+	memset(&fmt, 0, sizeof(fmt));
+	fmt.pad = pad;
+	fmt.which = which;
+	fmt.format = *format;
+
+	ret = ioctl(entity->fd, VIDIOC_SUBDEV_S_FMT, &fmt);
+	if (ret < 0)
+		return errno;
+
+	*format = fmt.format;
+	return 0;
+}
+
-- 
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