🔧 Adding

Facade Pattern

Author: raj713335

05 Structural Design Patterns/05 Facade Design Pattern.py

@@ -0,0 +1,70 @@
+# Subsystem: Complex Video conversion Library
+
+class VideoFile:
+    def __init__(self, filename):
+        self.filename = filename
+        print(f"[VideoFile] Loaded video file: {filename}")
+
+
+class OggCompressionCodec:
+    def __str__(self):
+        return "OggCompressionCodec"
+
+
+class MPEG4CompressionCodec:
+    def __str__(self):
+        return "MPEG4CompressionCodec"
+
+
+class CodecFactory:
+    def extract(self, file: VideoFile):
+        print(f"[CodecFactory] Extracting codec from {file.filename}")
+        return OggCompressionCodec() if file.filename.endswith(".ogg") else MPEG4CompressionCodec()
+
+
+class BitrateReader:
+    @staticmethod
+    def read(filename: str, codec):
+        print(f"[BitrateReader] Reading from {filename} with codec {codec}")
+        return f"Buffered_data_from_{filename}"
+
+    @staticmethod
+    def convert(buffer: str, codec):
+        print(f"[BitrateReader] Converting buffer with {codec}")
+        return f"converted_data_to_{codec}"
+
+
+class AudioMixer:
+    def fix(self, result: str):
+        print(f"[AudioMixer] Fixing audio in result")
+        return f"audio_fixed_{result}"
+
+
+# Facade
+
+class VideoConverter:
+    def convert(self, filename: str, format: str):
+        print(f"\n[VideoConverter] Starting conversion of {filename} to {format}")
+
+        file = VideoFile(filename)
+        source_codec = CodecFactory().extract(file)
+
+        if format == "mp4":
+            destination_codec = MPEG4CompressionCodec()
+        else:
+            destination_codec = OggCompressionCodec()
+
+        buffer = BitrateReader.read(filename, source_codec)
+        result = BitrateReader.convert(buffer, destination_codec)
+        result = AudioMixer().fix(result)
+
+        print(f"[VideoConverter] Conversion finished: {result}")
+        return result
+
+
+# Client Code
+
+if __name__ == "__main__":
+    converter = VideoConverter()
+    output = converter.convert("funny_cat.ogg", "mp4")
+    print(f"[Application] Final Output: {output}")