Initial commit

src/device.h

@@ -0,0 +1,52 @@
+#pragma once
+
+#include <stddef.h>
+#include <stdbool.h>
+#include <linux/videodev2.h>
+
+
+#define FORMAT_UNKNOWN -1
+#define STANDARD_UNKNOWN V4L2_STD_UNKNOWN
+
+
+struct buffer {
+	void	*start;
+	size_t	length;
+};
+
+struct device_runtime {
+	int				fd;
+	unsigned		width;
+	unsigned		height;
+	unsigned		format;
+	unsigned		n_buffers;
+	struct buffer	*buffers;
+	bool			capturing;
+};
+
+struct device {
+	char			*path;
+	unsigned		width;
+	unsigned		height;
+	unsigned		format;
+	v4l2_std_id		standard;
+	bool			dv_timings;
+	unsigned		n_buffers;
+	unsigned		every_frame;
+	unsigned		min_frame_size;
+	unsigned		jpeg_quality;
+	unsigned		timeout;
+	unsigned		error_timeout;
+
+	struct device_runtime	*run;
+	bool					*stop;
+};
+
+
+void device_init(struct device *dev, struct device_runtime *run, bool *const stop);
+
+int device_parse_format(const char *const str);
+v4l2_std_id device_parse_standard(const char *const str);
+
+int device_open(struct device *dev);
+void device_close(struct device *dev);