Fix StillImage not refreshing when loading a different image.

Author: Mysticial

SerialPrograms/Source/CommonFramework/VideoPipeline/VideoSession.cpp

@@ -123,7 +123,7 @@ void VideoSession::set_source(const std::shared_ptr<VideoSourceDescriptor>& devi
     m_logger.log("Changing video...", COLOR_GREEN);
     dispatch_to_main_thread([this, device]{
         std::lock_guard<std::mutex> lg0(m_reset_lock);
-        if (*m_descriptor == *device){
+        if (*m_descriptor == *device && !m_descriptor->should_reload()){
             return;
         }
 

SerialPrograms/Source/CommonFramework/VideoPipeline/VideoSourceDescriptor.h

@@ -38,6 +38,7 @@ class VideoSourceDescriptor{
     virtual ~VideoSourceDescriptor() = default;
 
 public:
+    virtual bool should_reload() const{ return false; }
     virtual bool operator==(const VideoSourceDescriptor& x) const = 0;
     virtual std::string display_name() const = 0;
 

SerialPrograms/Source/CommonFramework/VideoPipeline/VideoSources/VideoSource_StillImage.h

@@ -36,6 +36,7 @@ class VideoSourceDescriptor_StillImage : public VideoSourceDescriptor{
     // Otherwise, return 0.
     size_t source_image_height() const{return m_source_image_height;}
 
+    virtual bool should_reload() const override{ return true; }
     virtual bool operator==(const VideoSourceDescriptor& x) const override;
     virtual std::string display_name() const override{
         return "Display Image";