add center mode

bin/oxtimeline

@@ -24,6 +24,7 @@ if __name__ == '__main__':
     parser.add_option('-y', '--height', dest='height', help='timeline height, defaults to 64px', default=64, type="int")
     parser.add_option('-o', '--prefix', dest='prefix', help='prefix for timeline tiles')
     parser.add_option('-i', '--input', dest='input', help='video input')
+    parser.add_option('-m', '--mode', dest='mode', default='average', help='timeline mode: average(default), center')
     parser.add_option('-a', '--audio', action="store_true", dest="audio", default=False)
     (opts, args) = parser.parse_args()
 
@@ -39,7 +40,7 @@ if __name__ == '__main__':
     if not info['video'] or opts.audio:
         audio.Timeline(opts.input, opts.prefix, opts.width, opts.height)
     else:
-        video.Timeline(opts.input, opts.prefix, opts.width, opts.height)
+        video.Timeline(opts.input, opts.prefix, opts.width, opts.height, opts.mode)
 
     #oxtimeline.createTimelineMultiline(opts.prefix)
     oxtimeline.makeTiles(opts.prefix, 16, 3600)

oxtimeline/video.py

@@ -4,7 +4,6 @@
 from __future__ import division
 
 import Image
-import time
 import math
 
 import gobject
@@ -80,10 +79,11 @@ class Timeline(Video):
     _ready = False
     lastPos=0
     timeline_fps = 25
+    mode = 'average'
 
-    def __init__(self, uri, prefix, width, height):
+    def __init__(self, uri, prefix, width, height, mode):
         Video.__init__(self, uri, height, gst.Fraction(self.timeline_fps, 1))
-
+        self.mode = mode
         bus = self.get_bus()
         bus.add_signal_watch()
         self.watch_id = bus.connect("message", self.onBusMessage)
@@ -127,7 +127,13 @@ class Timeline(Video):
             self._ready = True
         else:
             _framePos = int(math.ceil((float(timestamp) / (gst.SECOND) * float(self.framerate)))) + 1
+            if self.mode == 'center':
+                frame = frame.crop((int(frame.size[1]/2), 0,
+                                    int(frame.size[1]/2)+1, frame.size[0]))
                 frame = frame.resize((1, self.tile_height), Image.ANTIALIAS)
+            else:
+                frame = frame.resize((1, self.tile_height), Image.ANTIALIAS)
+
             for framePos in range(self.lastPos, _framePos):
                 tile = int(math.floor(float(framePos) / self.input_tile_width))
                 tilePos = framePos - (tile * self.input_tile_width)