/usr/share/pyshared/kaa/metadata/video/real.py is in python-kaa-metadata 0.7.7+svn4596-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | # -*- coding: iso-8859-1 -*-
# -----------------------------------------------------------------------------
# real.py - parser for real media files
# -----------------------------------------------------------------------------
# $Id: real.py 4341 2010-08-22 21:19:41Z tack $
#
# -----------------------------------------------------------------------------
# kaa-Metadata - Media Metadata for Python
# Copyright (C) 2003-2006 Thomas Schueppel, Dirk Meyer
#
# First Edition: Thomas Schueppel <stain@acm.org>
# Maintainer: Dirk Meyer <dischi@freevo.org>
#
# Please see the file AUTHORS for a complete list of authors.
#
# 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 MER-
# CHANTABILITY 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
#
# -----------------------------------------------------------------------------
__all__ = ['Parser']
# python imports
import struct
import logging
# import kaa.metadata.video core
import core
# http://www.pcisys.net/~melanson/codecs/rmff.htm
# http://www.pcisys.net/~melanson/codecs/
# get logging object
log = logging.getLogger('metadata')
class RealVideo(core.AVContainer):
def __init__(self,file):
core.AVContainer.__init__(self)
self.mime = 'video/real'
self.type = 'Real Video'
h = file.read(10)
try:
(object_id,object_size,object_version) = struct.unpack('>4sIH',h)
except struct.error:
# EOF.
raise core.ParseError()
if not object_id == '.RMF':
raise core.ParseError()
file_version, num_headers = struct.unpack('>II', file.read(8))
log.debug("size: %d, ver: %d, headers: %d" % \
(object_size, file_version,num_headers))
for i in range(0,num_headers):
try:
oi = struct.unpack('>4sIH',file.read(10))
except (struct.error, IOError):
# Header data we expected wasn't there. File may be
# only partially complete.
break
if object_id == 'DATA' and oi[0] != 'INDX':
log.debug('INDX chunk expected after DATA but not found -- file corrupt')
break
(object_id,object_size,object_version) = oi
if object_id == 'DATA':
# Seek over the data chunk rather than reading it in.
file.seek(object_size - 10, 1)
else:
self._read_header(object_id, file.read(object_size-10))
log.debug("%s [%d]" % (object_id,object_size-10))
# Read all the following headers
def _read_header(self,object_id,s):
if object_id == 'PROP':
prop = struct.unpack('>9IHH', s)
log.debug(prop)
if object_id == 'MDPR':
mdpr = struct.unpack('>H7I', s[:30])
log.debug(mdpr)
self.length = mdpr[7]/1000.0
(stream_name_size,) = struct.unpack('>B', s[30:31])
stream_name = s[31:31+stream_name_size]
pos = 31+stream_name_size
(mime_type_size,) = struct.unpack('>B', s[pos:pos+1])
mime = s[pos+1:pos+1+mime_type_size]
pos += mime_type_size+1
(type_specific_len,) = struct.unpack('>I', s[pos:pos+4])
type_specific = s[pos+4:pos+4+type_specific_len]
pos += 4+type_specific_len
if mime[:5] == 'audio':
ai = core.AudioStream()
ai.id = mdpr[0]
ai.bitrate = mdpr[2]
self.audio.append(ai)
elif mime[:5] == 'video':
vi = core.VideoStream()
vi.id = mdpr[0]
vi.bitrate = mdpr[2]
self.video.append(vi)
else:
log.debug("Unknown: %s" % mime)
if object_id == 'CONT':
pos = 0
(title_len,) = struct.unpack('>H', s[pos:pos+2])
self.title = s[2:title_len+2]
pos += title_len+2
(author_len,) = struct.unpack('>H', s[pos:pos+2])
self.artist = s[pos+2:pos+author_len+2]
pos += author_len+2
(copyright_len,) = struct.unpack('>H', s[pos:pos+2])
self.copyright = s[pos+2:pos+copyright_len+2]
pos += copyright_len+2
(comment_len,) = struct.unpack('>H', s[pos:pos+2])
self.comment = s[pos+2:pos+comment_len+2]
Parser = RealVideo
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