| 1 | #if 0 |
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| 2 | # $Id: realinfo.py,v 1.6 2003/07/02 09:09:41 the_krow Exp $ |
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| 3 | # $Log: realinfo.py,v $ |
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| 4 | # Revision 1.6 2003/07/02 09:09:41 the_krow |
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| 5 | # i18n stuff added to AVI |
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| 6 | # some debug outputs removed |
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| 7 | # |
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| 8 | # Revision 1.5 2003/06/30 13:17:20 the_krow |
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| 9 | # o Refactored mediainfo into factory, synchronizedobject |
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| 10 | # o Parsers now register directly at mmpython not at mmpython.mediainfo |
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| 11 | # o use mmpython.Factory() instead of mmpython.mediainfo.get_singleton() |
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| 12 | # o Bugfix in PNG parser |
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| 13 | # o Renamed disc.AudioInfo into disc.AudioDiscInfo |
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| 14 | # o Renamed disc.DataInfo into disc.DataDiscInfo |
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| 15 | # |
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| 16 | # Revision 1.4 2003/06/29 11:59:35 dischi |
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| 17 | # make some debug silent |
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| 18 | # |
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| 19 | # Revision 1.3 2003/06/20 19:17:22 dischi |
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| 20 | # remove filename again and use file.name |
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| 21 | # |
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| 22 | # Revision 1.2 2003/06/12 18:53:19 the_krow |
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| 23 | # OGM detection added. |
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| 24 | # .ram is a valid extension to real files |
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| 25 | # |
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| 26 | # Revision 1.1 2003/06/12 14:43:22 the_krow |
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| 27 | # Realmedia file parsing. Title, Artist, Copyright work. Couldn't find |
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| 28 | # many technical parameters to retrieve. |
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| 29 | # Some initial QT parsing |
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| 30 | # added Real to __init__.py |
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| 31 | # |
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| 32 | # |
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| 33 | # |
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| 34 | # MMPython - Media Metadata for Python |
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| 35 | # Copyright (C) 2003 Thomas Schueppel |
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| 36 | # |
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| 37 | # This program is free software; you can redistribute it and/or modify |
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| 38 | # it under the terms of the GNU General Public License as published by |
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| 39 | # the Free Software Foundation; either version 2 of the License, or |
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| 40 | # (at your option) any later version. |
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| 41 | # |
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| 42 | # This program is distributed in the hope that it will be useful, but |
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| 43 | # WITHOUT ANY WARRANTY; without even the implied warranty of MER- |
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| 44 | # CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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| 45 | # Public License for more details. |
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| 46 | # |
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| 47 | # You should have received a copy of the GNU General Public License along |
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| 48 | # with this program; if not, write to the Free Software Foundation, Inc., |
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| 49 | # 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 50 | # |
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| 51 | # ----------------------------------------------------------------------- |
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| 52 | #endif |
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| 53 | |
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| 54 | import struct |
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| 55 | import string |
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| 56 | |
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| 57 | from mmpython import mediainfo |
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| 58 | import mmpython |
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| 59 | |
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| 60 | # http://www.pcisys.net/~melanson/codecs/rmff.htm |
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| 61 | # http://www.pcisys.net/~melanson/codecs/ |
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| 62 | |
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| 63 | _print = mediainfo._debug |
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| 64 | |
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| 65 | class RealInfo(mediainfo.AVInfo): |
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| 66 | def __init__(self,file): |
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| 67 | mediainfo.AVInfo.__init__(self) |
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| 68 | self.context = 'video' |
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| 69 | self.valid = 0 |
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| 70 | self.mime = 'video/real' |
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| 71 | self.type = 'Real Video' |
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| 72 | h = file.read(10) |
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| 73 | (object_id,object_size,object_version) = struct.unpack('>4sIH',h) |
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| 74 | if object_id == '.RMF': |
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| 75 | self.valid = 1 |
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| 76 | else: |
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| 77 | return |
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| 78 | file_version, num_headers = struct.unpack('>II', file.read(8)) |
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| 79 | _print("size: %d, ver: %d, headers: %d" % (object_size, file_version,num_headers)) |
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| 80 | for i in range(0,num_headers): |
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| 81 | (object_id,object_size,object_version) = struct.unpack('>4sIH',file.read(10)) |
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| 82 | self._read_header(object_id, file.read(object_size-10)) |
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| 83 | _print("%s [%d]" % (object_id,object_size-10)) |
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| 84 | # Read all the following headers |
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| 85 | |
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| 86 | def _read_header(self,object_id,s): |
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| 87 | if object_id == 'PROP': |
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| 88 | prop = struct.unpack('>9IHH', s) |
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| 89 | _print(prop) |
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| 90 | if object_id == 'MDPR': |
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| 91 | mdpr = struct.unpack('>H7I', s[:30]) |
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| 92 | _print(mdpr) |
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| 93 | self.length = mdpr[7]/1000 |
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| 94 | (stream_name_size,) = struct.unpack('>B', s[30:31]) |
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| 95 | stream_name = s[31:31+stream_name_size] |
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| 96 | pos = 31+stream_name_size |
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| 97 | (mime_type_size,) = struct.unpack('>B', s[pos:pos+1]) |
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| 98 | mime = s[pos+1:pos+1+mime_type_size] |
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| 99 | pos += mime_type_size+1 |
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| 100 | (type_specific_len,) = struct.unpack('>I', s[pos:pos+4]) |
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| 101 | type_specific = s[pos+4:pos+4+type_specific_len] |
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| 102 | pos += 4+type_specific_len |
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| 103 | if mime[:5] == 'audio': |
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| 104 | ai = mediainfo.AudioInfo() |
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| 105 | ai.id = mdpr[0] |
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| 106 | ai.bitrate = mdpr[2] |
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| 107 | self.audio.append(ai) |
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| 108 | elif mime[:5] == 'video': |
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| 109 | vi = mediainfo.VideoInfo() |
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| 110 | vi.id = mdpr[0] |
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| 111 | vi.bitrate = mdpr[2] |
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| 112 | self.video.append(vi) |
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| 113 | else: |
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| 114 | _print("Unknown: %s" % mime) |
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| 115 | if object_id == 'CONT': |
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| 116 | pos = 0 |
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| 117 | (title_len,) = struct.unpack('>H', s[pos:pos+2]) |
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| 118 | self.title = s[2:title_len+2] |
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| 119 | pos += title_len+2 |
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| 120 | (author_len,) = struct.unpack('>H', s[pos:pos+2]) |
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| 121 | self.artist = s[pos+2:pos+author_len+2] |
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| 122 | pos += author_len+2 |
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| 123 | (copyright_len,) = struct.unpack('>H', s[pos:pos+2]) |
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| 124 | self.copyright = s[pos+2:pos+copyright_len+2] |
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| 125 | pos += copyright_len+2 |
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| 126 | (comment_len,) = struct.unpack('>H', s[pos:pos+2]) |
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| 127 | self.comment = s[pos+2:pos+comment_len+2] |
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| 128 | |
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| 129 | mmpython.registertype( 'video/real', ('rm', 'ra', 'ram'), mediainfo.TYPE_AV, RealInfo ) |
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