Imported Upstream version 0.4.0~beta1upstream/0.4.0_beta1

1 files changed, 223 insertions, 0 deletions

diff --git a/rapid/metadatavideo.py b/rapid/metadatavideo.py
new file mode 100644
index 0000000..7b6bc6c
--- /dev/null
+++ b/rapid/metadatavideo.py
@@ -0,0 +1,223 @@
+#!/usr/bin/python
+# -*- coding: latin1 -*-
+
+### Copyright (C) 2007-11 Damon Lynch <damonlynch@gmail.com>
+
+### This program is free software; you can redistribute it and/or modify
+### it under the terms of the GNU General Public License as published by
+### the Free Software Foundation; either version 2 of the License, or
+### (at your option) any later version.
+
+### This program is distributed in the hope that it will be useful,
+### but WITHOUT ANY WARRANTY; without even the implied warranty of
+### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+### GNU General Public License for more details.
+
+### You should have received a copy of the GNU General Public License
+### along with this program; if not, write to the Free Software
+### Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+DOWNLOAD_VIDEO = True
+
+import os
+import datetime
+import time
+import subprocess
+import tempfile
+
+import multiprocessing
+import logging
+logger = multiprocessing.get_logger()
+
+import gtk
+import paths
+
+import rpdfile
+
+try:
+    from hachoir_core.cmd_line import unicodeFilename
+    from hachoir_parser import createParser
+    from hachoir_metadata import extractMetadata
+except ImportError:
+    DOWNLOAD_VIDEO = False
+
+if DOWNLOAD_VIDEO:
+
+    def version_info():
+        from hachoir_metadata.version import VERSION
+        return VERSION
+        
+    def get_video_THM_file(full_filename):
+        """
+        Checks to see if a thumbnail file (THM) is in the same directory as the 
+        file. Expects a full path to be part of the file name.
+        
+        Returns the filename, including path, if found, else returns None.
+        """
+        
+        f = None
+        name, ext = os.path.splitext(full_filename)
+        for e in rpdfile.VIDEO_THUMBNAIL_FILE_EXTENSIONS:
+            if os.path.exists(name + '.' + e):
+                f = name + '.' + e
+                break
+            if os.path.exists(name + '.' + e.upper()):
+                f = name + '.' + e.upper()
+                break
+            
+        return f        
+
+    class VideoMetaData():
+        def __init__(self, filename):
+            """
+            Initialize by loading metadata using hachoir
+            """
+            
+            self.filename = filename
+            self.u_filename = unicodeFilename(filename)
+            self.metadata = None
+            
+        def _kaa_get(self, key, missing, stream=None): 
+            if not hasattr(self, 'info'):
+                try:
+                    from kaa.metadata import parse
+                except ImportError:
+                    msg = """The package Kaa metadata does not exist.
+It is needed to access FPS and codec video file metadata."""
+                    logger.error(msg)
+                    self.info = None
+                else:
+                    self.info = parse(self.filename)
+            if self.info:
+                if stream != None:
+                    v = self.info['video'][stream][key]
+                else:
+                    v = self.info[key]
+            else:
+                v = None
+            if v:
+                return str(v)
+            else:
+                return missing                
+        
+        def _load_hachoir_metadata_parser(self):
+            self.parser = createParser(self.u_filename, self.filename)
+            self.metadata = extractMetadata(self.parser) 
+        
+        def _get(self, key, missing):
+            if self.metadata is None:
+                self._load_hachoir_metadata_parser()
+                
+            try:
+                v = self.metadata.get(key)
+            except:
+                v = missing
+            return v
+            
+        def date_time(self, missing=''):
+            return self._get('creation_date', missing)
+                
+        def time_stamp(self, missing=''):
+            """
+            Returns a float value representing the time stamp, if it exists
+            """
+            dt = self.date_time(missing=None)
+            if dt:
+                # convert it to a time stamp (not optimal, but better than nothing!)
+                v = time.mktime(dt.timetuple())
+            else:
+                v = missing
+            return v
+            
+        def codec(self, stream=0, missing=''):
+            return self._kaa_get('codec', missing, stream)
+            
+        def length(self, missing=''):
+            """
+            return the duration (length) of the video, rounded to the nearest second, in string format
+            """
+            delta = self.metadata.get('duration')
+            l = '%.0f' % (86400 * delta.days + delta.seconds + float('.%s' % delta.microseconds))
+            return l
+            
+            
+        def width(self, missing=''):
+            v = self._get('width', missing)
+            if v != None:
+                return str(v)
+            else:
+                return None
+            
+        def height(self, missing=''):
+            v = self._get('height', missing)
+            if v != None:
+                return str(v)
+            else:
+                return None
+            
+        def frames_per_second(self, stream=0, missing=''):
+            fps = self._kaa_get('fps', missing, stream)
+            try:
+                fps = '%.0f' % float(fps)
+            except:
+                pass
+            return fps
+        
+        def fourcc(self, stream=0, missing=''):
+            return self._kaa_get('fourcc', missing, stream)
+            
+
+            
+class DummyMetaData():
+    """
+    Class which gives metadata values for an imaginary video.
+    
+    Useful for displaying in preference examples etc. when no video is ready to
+    be downloaded.
+    
+    See VideoMetaData class for documentation of class methods.        
+    """
+    def __init__(self, filename):
+        pass        
+    
+    def date_time(self, missing=''):
+        return datetime.datetime.now()
+        
+    def codec(self, stream=0, missing=''):
+        return 'H.264 AVC'
+        
+    def length(self, missing=''):
+        return '57'
+        
+    def width(self, stream=0, missing=''):
+        return '1920'
+        
+    def height(self, stream=0, missing=''):
+        return '1080'
+        
+    def frames_per_second(self, stream=0, missing=''):
+        return '24'
+    
+    def fourcc(self, stream=0, missing=''):
+        return 'AVC1'
+                    
+            
+if __name__ == '__main__':
+    import sys
+    
+    
+    if (len(sys.argv) != 2):
+        print 'Usage: ' + sys.argv[0] + ' path/to/video/containing/metadata'
+        sys.exit(0)
+
+    else:
+        m = VideoMetaData(sys.argv[1])
+        dt = m.date_time()
+        if dt:
+            print dt.strftime('%Y%m%d-%H:%M:%S')
+        print "codec: %s" % m.codec()
+        print "%s seconds" % m.length()
+        print "%sx%s" % (m.width(), m.height())
+        print "%s fps" % m.frames_per_second()
+        print "Fourcc: %s" % (m.fourcc())
+