sdl camera input source

src/frame_streams/sdl/sdl_video_frame_stream2.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include "./video.hpp"
+#include "../frame_stream2.hpp"
+#include "../multi_source.hpp"
+
+#include <atomic>
+#include <thread>
+
+// while a stream is subscribed, have the camera device open
+// and aquire and push frames from a thread
+struct SDLVideo2InputDevice : public FrameStream2MultiSource<SDLVideoFrame> {
+	std::atomic_uint _ref {0};
+	std::thread _thread;
+
+	// TODO: device id
+	SDLVideo2InputDevice(void);
+	virtual ~SDLVideo2InputDevice(void);
+
+	// we hook int multi source
+	std::shared_ptr<FrameStream2I<SDLVideoFrame>> subscribe(void) override;
+	bool unsubscribe(const std::shared_ptr<FrameStream2I<SDLVideoFrame>>& sub) override;
+};
+