Clip: GetEffect implementation

include/Clip.h

@@ -169,6 +169,9 @@ namespace openshot {
 		/// Return the list of effects on the timeline
 		std::list<openshot::EffectBase*> Effects() { return effects; };
 
+		/// Look up an effect by ID
+		openshot::EffectBase* GetEffect(const std::string& id);
+
 		/// @brief Get an openshot::Frame object for a specific frame number of this timeline.
 		///
 		/// @returns The requested frame (containing the image)
@@ -253,8 +256,6 @@ namespace openshot {
 		openshot::Keyframe has_audio; ///< An optional override to determine if this clip has audio (-1=undefined, 0=no, 1=yes)
 		openshot::Keyframe has_video; ///< An optional override to determine if this clip has video (-1=undefined, 0=no, 1=yes)
 	};
+}  // namespace
 
-
-}
-
-#endif
+#endif  // OPENSHOT_CLIP_H

src/Clip.cpp

@@ -368,6 +368,18 @@ std::shared_ptr<Frame> Clip::GetFrame(int64_t requested_frame)
 		throw ReaderClosed("No Reader has been initialized for this Clip.  Call Reader(*reader) before calling this method.");
 }
 
+// Look up an effect by ID
+openshot::EffectBase* Clip::GetEffect(const std::string& id)
+{
+	// Find the matching effect (if any)
+	for (const auto& effect : effects) {
+		if (effect->Id() == id) {
+			return effect;
+		}
+	}
+	return nullptr;
+}
+
 // Get file extension
 std::string Clip::get_file_extension(std::string path)
 {