CC-2016: Rearrange python scripts for reusability

-moved files

python_apps/pypo/scripts/old_files/cue_file.py

@@ -0,0 +1,141 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+
+"""
+cue script that gets called by liquidsoap if a file in the playlist
+gives orders to cue (in/out). eg:
+cue_file:cue_in=90.0,cue_out=110.0:annotate:***
+
+cue_in is number of seconds from the beginning of the file.
+cue_out is number of seconds from the end of the file.
+
+params:  path_to_file, cue_in [float, seconds], cue_out [float, seconds]
+returns: path to the cued temp-file
+
+examples:
+calling: ./cue_file.py /storage/pypo/cache/2010-06-25-15-05-00/35.mp3 10 120.095
+returns: /tmp/lstf_UwDKcEngvF
+
+In this example, the first 10 seconds and last 120.095 seconds are cut off. The 
+middle part of the file is returned.
+
+One thing to mention here:
+The way pypo (ab)uses liquidsoap can bring in some unwanted effects. liquidsoap 
+is built in a way that it tries to collect the needed files to playout in advance.
+we 'force' liquidsoap to immediately start playing a newly loaded list, so ls has
+no time to prepare the files. If a file is played without cues, this does not affect
+the playout too much. My testing on a lame VM added a delay of +/- 10ms.
+
+If the first file in  a playlist is cued, the "mp3cut" command takes time to execute.
+On the same VM this takes an additional 200ms for an average size mp3-file.
+So the playout will start a bit delayed. This should not be a too big issue, but
+think about this behaviour if you eg access the files via network (nas) as the reading
+of files could take some time as well.
+
+So maybe we should think about a different implementation. One way would be to do the
+cueing during playlist preparation, so all the files would be pre-cut when they are 
+passed to liquidsoap. 
+Additionally this would allow to run an unpathed version of ls.
+
+"""
+
+import sys
+import shutil
+import random
+import string
+import time
+from datetime import timedelta
+import os
+
+from mutagen.mp3 import MP3
+from mutagen.oggvorbis import OggVorbis
+
+TEMP_DIR = '/tmp/';
+
+
+sys.stderr.write('\n** starting mp3/ogg cutter **\n\n')
+
+try: src = sys.argv[1]
+except Exception, e: 
+    sys.stderr.write('No file given. Exiting...\n')
+    sys.exit()
+
+try: cue_in = float(sys.argv[2])
+except Exception, e: 
+    cue_in = float(0)
+    pass
+
+try: cue_out = float(sys.argv[3])
+except Exception, e:
+    cue_out = float(0)
+    pass
+
+sys.stderr.write('in: %s - out: %s file: %s \n' % (cue_in, cue_out, src))
+dst = TEMP_DIR + 'lstf_' + "".join( [random.choice(string.letters) for i in xrange(10)] )
+#TODO, there is no checking whether this randomly generated file name already exists!
+
+
+# get length of track using mutagen. 
+#audio
+#command
+if src.lower().endswith('.mp3'):
+    audio = MP3(src)
+    dur = round(audio.info.length, 3)
+
+    sys.stderr.write('duration: ' + str(dur) + '\n')
+
+    cue_out = round(float(dur) - cue_out, 3)
+
+    str_cue_in = str(timedelta(seconds=cue_in)).replace(".", "+") # hh:mm:ss+mss, eg 00:00:20+000
+    str_cue_out = str(timedelta(seconds=cue_out)).replace(".", "+") #
+
+    """
+    now a bit a hackish part, don't know how to do this better...
+    need to cut the digits after the "+"
+
+    """
+    ts = str_cue_in.split("+")
+    try:
+        if len(ts[1]) == 6:
+            ts[1] = ts[1][0:3]
+            str_cue_in = "%s+%s" % (ts[0], ts[1])
+    except Exception, e:
+        pass
+
+    ts = str_cue_out.split("+")
+    try:
+        if len(ts[1]) == 6:
+            ts[1] = ts[1][0:3]
+            str_cue_out = "%s+%s" % (ts[0], ts[1])
+    except Exception, e:
+        pass
+
+    sys.stderr.write('in:       ' + str_cue_in + '\n')
+    sys.stderr.write('abs:      ' + str(str_cue_out) + '\n\n')
+
+    command = 'mp3cut -o %s -t %s-%s %s' % (dst, str_cue_in, str_cue_out, src)
+elif src.lower().endswith('.ogg'):
+    audio = OggVorbis(src)
+    dur = audio.info.length
+    sys.stderr.write('duration: ' + str(dur) + '\n')
+    
+    cue_out = float(dur) - cue_out
+    
+    #convert input format of ss.mmm to milliseconds and to string<
+    str_cue_in = str(int(round(cue_in*1000)))
+    
+    #convert input format of ss.mmm to milliseconds and to string
+    str_cue_out = str(int(round(cue_out*1000)))
+    
+    command = 'oggCut -s %s -e %s %s %s' % (str_cue_in, str_cue_out, src, dst)
+else:
+    sys.stderr.write('File name with invalid extension. Exiting...\n')
+    sys.exit()
+
+
+
+sys.stderr.write(command + '\n\n\n')
+os.system(command + ' > /dev/null 2>&1')
+
+print dst + "\n";