Update Dockerfile and application files

Dockerfile

@@ -16,6 +16,7 @@ RUN pip install --upgrade pip
 RUN pip install verovio
 RUN python3 -c "import verovio, sys; sys.stderr.write('✅ Verovio version: ' + verovio.toolkit().getVersion() + '\n')"
 RUN pip install gradio
+RUN pip install music21
 
 # Copy app and MEI file
 WORKDIR /app

app.py

@@ -1,6 +1,9 @@
-import verovio
-import gradio as gr
 import os
+import gradio as gr
+import verovio
+import music21
+from music21 import converter, musicxml
+
 
 def get_verovio_resource_path():
     for path in verovio.__path__:
@@ -9,34 +12,93 @@ def get_verovio_resource_path():
             return candidate
     return None
 
-def render_mei(mei_path):
-    tk = verovio.toolkit()
-    # Set resource path explicitly
-    resource_path = get_verovio_resource_path()
-    print(f"resource path: {os.listdir(resource_path)}")
-    print("[Debug] Using resource path:", resource_path)
-    if resource_path:
-        try:
-            tk.setResourcePath(resource_path)
-        except Exception as e:
-            print("[Error] Failed to set resourcePath:", e)
-    # tk.setOptions({
-    #     "font": "/app/data/Bravura",  # Path to the font folder
-    # })
-    with open(mei_path, "r", encoding="utf-8") as f:
-        mei_data = f.read()
-    # tk.loadFile("path-to-mei-file")
-    # return tk.renderToSVG(1)
+# Initialize the Verovio toolkit with rendering options
+tk = verovio.toolkit()
+resource_path = get_verovio_resource_path()
+print(f"resource path: {os.listdir(resource_path)}")
+print("[Debug] Using resource path:", resource_path)
+if resource_path:
+    try:
+        tk.setResourcePath(resource_path)
+    except Exception as e:
+        print("[Error] Failed to set resourcePath:", e)
+tk.setOptions({
+    "scale": 40,
+    "adjustPageHeight": True,
+    "landscape": False,
+})
+
+# Initialize Verovio toolkit
+tk = verovio.toolkit()
+tk.setOptions({
+    "scale": 40,
+    "adjustPageHeight": True
+})
+
+def midi_to_musicxml_string(midi_path):
+    # Parse MIDI file into a music21 stream
+    score = converter.parse(midi_path)
+    # Export to MusicXML string
+    exporter = musicxml.m21ToXml.GeneralObjectExporter(score)
+    musicxml_str = exporter.parse().decode('utf-8')  # parse() returns bytes
+    return musicxml_str
 
+def xml_to_mei_string(xmlstring):
+    tk.loadData(xmlstring)
+    return tk.getMEI()
+
+def midi_to_svg(midi_path):
     try:
-        tk.loadData(mei_data)
-        print("before rendering")
-        res = tk.renderToSVG(1)
-        print("after rendering")
-        return res
+        # Convert MIDI to MEI using music21
+        musicxml = midi_to_musicxml_string(midi_path)
+        mei_str = xml_to_mei_string(musicxml)
+        # Load MEI and render SVG
+        tk.loadData(mei_str)
+        svg = tk.renderToSVG(1)
+        return svg
     except Exception as e:
-        return f"<pre>Rendering failed:\n{e}</pre>"
+        return f"<p style='color:red'>Error: {e}</p>"
+
+# Gradio UI
+with gr.Blocks() as demo:
+    gr.Markdown("## 🎼 MIDI to Score Viewer (via MEI)")
+
+    midi_input = gr.File(label="Upload a MIDI file", file_types=[".mid", ".midi"])
+    render_btn = gr.Button("Convert & Render")
+    score_display = gr.HTML(label="Score Output")
+
+    render_btn.click(fn=midi_to_svg, inputs=midi_input, outputs=score_display)
+
+import subprocess
+import tempfile
+
+def midi_to_mei_string(midi_path):
+    try:
+        with tempfile.NamedTemporaryFile(suffix=".mei", delete=False) as tmp:
+            mei_path = tmp.name
+
+        # Call Verovio CLI
+        subprocess.run(
+            ["verovio", "-f", "midi", midi_path, "-o", mei_path],
+            check=True
+        )
+
+        # Read the resulting MEI file
+        with open(mei_path, "r", encoding="utf-8") as f:
+            mei_str = f.read()
+
+        return mei_str
+
+    except subprocess.CalledProcessError as e:
+        return f"<p style='color:red'>Verovio CLI failed: {e}</p>"
+    except Exception as e:
+        return f"<p style='color:red'>Error: {e}</p>"
+
+
+# Smart launch settings
+if os.getenv("SPACE_ID"):
+    demo.launch()
+else:
+    # demo.launch(share=False, inbrowser=True)
+    demo.launch(server_name="0.0.0.0", server_port=7860)
 
-gr.Interface(fn=render_mei, inputs=gr.File(type="filepath"), outputs=gr.HTML()).launch(
-    server_name="0.0.0.0", server_port=7860
-)

old_app.py

@@ -0,0 +1,37 @@
+import verovio
+import os
+
+def get_verovio_resource_path():
+    for path in verovio.__path__:
+        candidate = os.path.join(path, "data")
+        if os.path.exists(candidate):
+            return candidate
+    return None
+
+def render_mei(mei_path):
+    tk = verovio.toolkit()
+    # Set resource path explicitly
+    resource_path = get_verovio_resource_path()
+    print("[Debug] Using resource path:", resource_path)
+    if resource_path:
+        try:
+            tk.setResourcePath(resource_path)
+        except Exception as e:
+            print("[Error] Failed to set resourcePath:", e)
+    # tk.setOptions({
+    #     "font": "/app/data/Bravura",  # Path to the font folder
+    # })
+    with open(mei_path, "r", encoding="utf-8") as f:
+        mei_data = f.read()
+    # tk.loadFile("path-to-mei-file")
+    # return tk.renderToSVG(1)
+
+    try:
+        tk.loadData(mei_data)
+        return tk.renderToSVG(1)
+    except Exception as e:
+        return f"<pre>Rendering failed:\n{e}</pre>"
+
+
+string = render_mei("output.mei")
+print(string)

requirements.txt

@@ -1 +1,2 @@
-verovio
+verovio
+music21