Display RTSP Stream in Cinder using OpenCV

CinderProjectApp.cpp

#include "cinder/app/AppNative.h"
#include "cinder/gl/Texture.h"

#include "CinderOpenCV.h"

using namespace ci;
using namespace ci::app;

static std::string const VideoStreamAddress = "rtsp://user:[email protected]/path/to/stream";

class CinderOpenCV : public AppNative {
	public:
		void setup();
		void update();
		void draw();
	
	protected:
		cv::VideoCapture mVideoCapture;
		cv::Mat mCurrentVideoFrame;
		gl::Texture mTexture;
};

void CinderOpenCV::setup() {
	if (!mVideoCapture.open(VideoStreamAddress)) {
		console() << "couldn't open stream" << std::endl;
	}
}

void CinderOpenCV::update() {
	if (!mVideoCapture.read(mCurrentVideoFrame)) {
		console() << "couldn't read current frame from video" << std::endl;
	}
}

void CinderOpenCV::draw() {
	gl::clear();

	mTexture = gl::Texture(fromOcv(mCurrentVideoFrame));
	
	if (!mTexture) {
		console() << "couldn't load current frame into texture" << std::endl;
		return;
	}

	gl::draw(mTexture, getWindowBounds());
}

CINDER_APP_NATIVE(CinderOpenCV, RendererGl)