now supports color key images with 255,0,255 as the color key (only pixels that are 255,0,255) are drawn

src/playback_thread.cpp

@@ -152,7 +152,11 @@ void Playback::drawEffects(cv::Mat &frame) {
     if(saturation_ > 0) {
         ac::setSaturation(frame, saturation_);
     }
-
+    if(colorkey_set == true && !color_image.empty()) {
+        cv::Mat cframe = frame.clone();
+        cv::Vec3b well_color(255,0,255);
+        ac::filterColorKeyed(well_color, ac::orig_frame, cframe, frame);
+    }
 }
 
 void Playback::drawFilter(cv::Mat &frame, std::pair<int, int> &filter) {
@@ -245,6 +249,15 @@ Playback::~Playback() {
 #endif
 }
 
+void Playback::Clear() {
+    mutex.lock();
+    blend_set = false;
+    colorkey_set = false;
+    blend_image.release();
+    color_image.release();
+    mutex.unlock();
+}
+
 void Playback::Stop() {
     stop = true;
     alpha = 0;
@@ -280,6 +293,13 @@ void Playback::setImage(const cv::Mat &frame) {
     mutex.unlock();
 }
 
+void Playback::setColorKey(const cv::Mat &image) {
+    mutex.lock();
+    colorkey_set = true;
+    color_image = image;
+    mutex.unlock();
+}
+
 void Playback::filterFade(cv::Mat &frame, std::pair<int, int> &filter1, std::pair<int, int> &filter2, double alpha) {
     unsigned int h = frame.rows; // frame height
     unsigned int w = frame.cols;// framew idth