Add a title clip to the timeline

[vidi-player.git] / vidi-timeline.py

diff --git a/vidi-timeline.py b/vidi-timeline.py
index 1068545..07639e6 100755 (executable)
--- a/vidi-timeline.py
+++ b/vidi-timeline.py
@@ -22,47 +22,35 @@ import sys
 import mido
 import vidi
 
-# TODO: turn that into a command line option
+# TODO: turn these into command line options
 ADD_REST_BACKGROUND = True
+ADD_TITLE = True
+TITLE_TEXT = None
+TITLE_DURATION = 5
+TITLE_CREDITS = "Created with vidi-timeline\nhttps://git.ao2.it/vidi-player.git"
 
 
-def is_note(msg):
-    return msg.type == 'note_on' or msg.type == 'note_off'
-
-
-def is_note_on(msg):
-    return msg.type == 'note_on' and msg.velocity > 0
-
-
-def is_note_off(msg):
-    return ((msg.type == 'note_on' and msg.velocity == 0) or
-            (msg.type == 'note_off'))
-
-
-def check_overlapping_notes(midi_file):
-    previous_note_on = False
-    for msg in midi_file:
-        if is_note_on(msg) and msg.channel == 0:
-            if previous_note_on:
-                return True
-
-            previous_note_on = True
-        elif is_note_off(msg) and msg.channel == 0:
-            previous_note_on = False
+def timeline_from_midi(midi_file, video_font_path):
+    timeline = vidi.Timeline()
 
-    return False
+    if ADD_TITLE:
+        title = TITLE_TEXT
+        if not title:
+            title = os.path.splitext(os.path.basename(midi_file.filename))[0]
+            title += "\n\n"
+            title += TITLE_CREDITS
 
+        timeline.add_title_clip(title, 0, TITLE_DURATION)
 
-def timeline_from_midi(midi_file, video_font_path):
-    timeline = vidi.Timeline()
+        elapsed_time = start_time = TITLE_DURATION
+    else:
+        elapsed_time = start_time = 0
 
-    elapsed_time = 0
-    start_time = 0
     for msg in midi_file:
         elapsed_time += msg.time
-        if is_note_on(msg) and msg.channel == 0:
+        if vidi.is_note_on(msg) and msg.channel == 0:
             start_time = elapsed_time
-        elif is_note_off(msg) and msg.channel == 0:
+        elif vidi.is_note_off(msg) and msg.channel == 0:
             note = vidi.MidiNote(msg.note)
             duration = elapsed_time - start_time
             print("Note name: %3s start_time: %f duration: %f" %
@@ -104,7 +92,7 @@ def main():
 
     midi_file = mido.MidiFile(sys.argv[1])
 
-    overlapping_notes = check_overlapping_notes(midi_file)
+    overlapping_notes = vidi.check_overlapping_notes(midi_file)
     if overlapping_notes:
         sys.stderr.write("Sorry, supporting only midi file with no overlapping notes on channel 0\n")
         return 1