From a5f2eb93dce0b2f240e0f366878eba66e23ce17c Mon Sep 17 00:00:00 2001
From: yomguy <>
Date: Tue, 1 May 2007 01:19:48 +0000
Subject: [PATCH] Added Mp3Exporter with (very) partial mapping of DublinCore
 fields - Oops.

---
 telemeta/export/mp3.py | 140 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 telemeta/export/mp3.py

diff --git a/telemeta/export/mp3.py b/telemeta/export/mp3.py
new file mode 100644
index 00000000..ebcc82d6
--- /dev/null
+++ b/telemeta/export/mp3.py
@@ -0,0 +1,140 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2007 Parisson SARL
+# Copyright (c) 2006-2007 Guillaume Pellerin <pellerin@parisson.com>
+# All rights reserved.
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution. The terms
+# are also available at http://svn.parisson.org/telemeta/TelemetaLicense.
+#
+# Author: Guillaume Pellerin <pellerin@parisson.com>
+
+import os
+import string
+
+from telemeta.export.core import *
+from telemeta.export.api import IExporter
+#from mutagen.id3 import *
+
+
+class Mp3Exporter(ExporterCore):
+	"""Defines methods to export to MP3"""
+
+	implements(IExporter)
+	
+	def __init__(self):
+		self.item_id = ''
+		self.metadata = {}
+		self.description = ''
+		self.info = []
+		self.source = ''
+		self.dest = ''
+		self.options = {}
+		self.bitrate_default = '192'
+		self.dub2id3_dict = {'title': 'TIT2', #title2
+							 'creator': 'TCOM', #composer
+							 'creator': 'TPE1', #lead
+							 'identifier': 'UFID', #unique...
+							 'identifier': 'TALB', #album
+							 'date': 'TYER', #year
+							 'type': 'TCON', #genre
+							 'publisher': 'TPUB', #comment
+							 }
+
+	def get_format(self):
+		return 'MP3'
+	
+	def get_file_extension(self):
+		return 'mp3'
+
+	def get_mime_type(self):
+		return 'audio/mpeg'
+
+	def get_description(self):
+		return "FIXME"
+
+	def get_file_info(self):
+		try:
+			file_out1, file_out2 = os.popen4('mp3info "'+self.dest+'"')
+			info = []
+			for line in file_out2.readlines():
+				info.append(clean_word(line[:-1]))
+			self.info = info
+			return self.info
+		except IOError:
+			return 'Exporter error [1]: file does not exist.'
+
+	def decode(self):
+		try:
+			os.system('sox "'+self.source+'" -w -r 44100 -t	wav "' \
+						+self.cache_dir+os.sep+self.item_id+'"')
+			return self.cache_dir+os.sep+self.item_id+'.wav'
+		except IOError:
+			return 'ExporterError [2]: decoder not compatible.'
+
+	def write_tags(self):
+		"""Write all ID3v2.4 tags by mapping dub2id3_dict dictionnary with the
+			respect of mutagen classes and methods"""
+		from mutagen import id3
+		
+		id3 = id3.ID3(self.dest)
+		for tag in self.metadata.keys():
+			if tag in self.dub2id3_dict.keys():
+				frame_text = self.dub2id3_dict[tag]
+				value = self.metadata[tag]
+				#print frame_text+': '+value
+				frame = mutagen.id3.Frames[frame_text](3,value)
+				id3.add(frame)
+		id3.save()
+		
+	def process(self, item_id, source, metadata, options):
+		self.item_id = item_id
+		self.source = source
+		self.metadata = metadata
+		self.options = options
+
+		if 'mp3_bitrate' in self.options:
+			args = '-b '+self.options['mp3_bitrate']
+		else:
+			args = '-b '+self.bitrate_default
+			
+		args = args + '-c -o '
+
+		if 'verbose' in self.options and self.options['verbose'] != '0':
+			args = args
+		else:
+			args = args + '-S '
+		
+		if os.path.exists(self.source) and not iswav16(self.source):
+			self.source = self.decode()
+			
+		try:
+			# Pre-proccessing (core)
+			self.ext = self.get_file_extension()
+			self.dest = self.pre_process(self.item_id,
+							self.source,
+							self.metadata,
+							self.ext,
+							self.cache_dir,
+							self.options)
+			
+			# Encoding
+			os.system('lame '+args+' --tc "default" "'+self.source+
+					  				'" "'+self.dest+'"')
+			
+			# Pre-proccessing (self)
+			self.write_tags()
+			self.post_process(self.item_id,
+						 self.source,
+						 self.metadata,
+						 self.ext,
+						 self.cache_dir,
+						 self.options)
+						
+			# Output
+			return self.dest
+
+		except IOError:
+			return 'ExporterError [3]: source file does not exist.'
+
-- 
2.39.5