Initial import

This works for streaming mp4 from rtsp. But only to the first client as
it is unable to recognize discrete frames correctly. It needs further
work.

videostreamer.h

@@ -0,0 +1,27 @@
+#ifndef _VIDEOSTREAMER_H
+#define _VIDEOSTREAMER_H
+
+#include <libavformat/avformat.h>
+#include <stdbool.h>
+
+struct Videostreamer {
+	AVFormatContext * input_format_ctx;
+	AVFormatContext * output_format_ctx;
+	int video_stream_index;
+};
+
+void
+vs_setup(void);
+
+struct Videostreamer *
+vs_open(const char * const, const char * const,
+		const char * const, const char * const,
+		const bool);
+
+void
+vs_destroy(struct Videostreamer * const);
+
+int
+vs_read_write(const struct Videostreamer *, const bool);
+
+#endif