# -*- Mode: Python -*-
# vi:si:et:sw=4:sts=4:ts=4
-# audio concat tool
-# takes in one or more audio files and creates one audio file of the combination
-
+# audioconcat.py - Concatenates multiple audio files to single ogg/vorbis file
# Uses the gnonlin elements (http://gnonlin.sf.net/)
+# Copyright (C) 2005 Edward Hervey <edward@fluendo.com>
+# 2006 Jason Gerard DeRose <jderose@jasonderose.org>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Library General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library 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
+# Library General Public License for more details.
+#
+# You should have received a copy of the GNU Library General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+#
-import os
import sys
+
import gobject
+gobject.threads_init()
+
+import pygst
+pygst.require('0.10')
import gst
+from gst.extend.discoverer import Discoverer
+
+
+
+class AudioDec(gst.Bin):
+ '''Decodes audio file, outputs at specified caps'''
+
+ def __init__(self, location, caps):
+ gst.Bin.__init__(self)
+
+ # Create elements
+ src = gst.element_factory_make('filesrc')
+ dec = gst.element_factory_make('decodebin')
+ conv = gst.element_factory_make('audioconvert')
+ rsmpl = gst.element_factory_make('audioresample')
+ ident = gst.element_factory_make('identity')
+
+ # Set 'location' property on filesrc
+ src.set_property('location', location)
+
+ # Connect handler for 'new-decoded-pad' signal
+ dec.connect('new-decoded-pad', self.__on_new_decoded_pad)
+
+ # Add elements to bin
+ self.add(src, dec, conv, rsmpl, ident)
+
+ # Link *some* elements
+ # This is completed in self.__on_new_decoded_pad()
+ src.link(dec)
+ conv.link(rsmpl)
+ rsmpl.link(ident, caps)
+
+ # Reference used in self.__on_new_decoded_pad()
+ self.__apad = conv.get_pad('sink')
+
+ # Add ghost pad
+ self.add_pad(gst.GhostPad('src', ident.get_pad('src')))
+
+
+ def __on_new_decoded_pad(self, element, pad, last):
+ caps = pad.get_caps()
+ name = caps[0].get_name()
+ print '\n__on_new_decoded_pad:', name
+ if 'audio' in name:
+ if not self.__apad.is_linked(): # Only link once
+ pad.link(self.__apad)
+
+
+
+
+class AudioConcat:
+ '''Concatenates multiple audio files to single ogg/vorbis file'''
+
+ caps = gst.caps_from_string('audio/x-raw-float, rate=44100, channels=2, endianness=1234, width=32')
+
+ def __init__(self, infiles, outfile):
+ # These are used in iteration through infiles
+ self.infiles = infiles
+ self.i = 0
+ self.start = 0L
+
+ # The pipeline
+ self.pipeline = gst.Pipeline()
+
+ # Create bus and connect 'eos' and 'error' handlers
+ self.bus = self.pipeline.get_bus()
+ self.bus.add_signal_watch()
+ self.bus.connect('message::eos', self.on_eos)
+ self.bus.connect('message::error', self.on_error)
+
+ # Create elements
+ self.comp = gst.element_factory_make('gnlcomposition')
+ self.enc = gst.element_factory_make('vorbisenc')
+ self.mux = gst.element_factory_make('oggmux')
+ self.sink = gst.element_factory_make('filesink')
+
+ # Connect handler for 'pad-added' signal
+ self.comp.connect('pad-added', self.on_pad_added)
+
+ # Set 'location' property on filesink
+ self.sink.set_property('location', outfile)
+
+ # Add elements to pipeline
+ self.pipeline.add(self.comp, self.enc, self.mux, self.sink)
+
+ # Link *some* elements
+ # This in completed in self.on_pad_added()
+ gst.element_link_many(self.enc, self.mux, self.sink)
+
+ # Reference used in self.on_pad_added()
+ self.apad = self.enc.get_pad('sink')
+
+ # The MainLoop
+ self.mainloop = gobject.MainLoop()
+
+ # Iterate through infiles
+ gobject.idle_add(self.discover)
+ self.mainloop.run()
+
+
+ def discover(self):
+ infile = self.infiles[self.i]
+ discoverer = Discoverer(infile)
+ discoverer.connect('discovered', self.on_discovered, infile)
+ discoverer.discover()
+ return False # Don't repeat idle call
+
+
+ def on_discovered(self, discoverer, ismedia, infile):
+ print '\non_discovered:', infile
+ discoverer.print_info()
+ if discoverer.is_audio:
+ dec = AudioDec(infile, self.caps)
+ src = gst.element_factory_make('gnlsource')
+ src.add(dec)
+ src.set_property('media-start', 0L)
+ src.set_property('media-duration', discoverer.audiolength)
+ src.set_property('start', self.start)
+ src.set_property('duration', discoverer.audiolength)
+ self.comp.add(src)
+ self.start += discoverer.audiolength
+ self.i += 1
+ if self.i < len(self.infiles):
+ gobject.idle_add(self.discover)
+ else:
+ if self.start > 0: # At least 1 infile is_audio and audiolength > 0
+ self.pipeline.set_state(gst.STATE_PLAYING)
+ else:
+ self.mainloop.quit()
+
+
+ def on_pad_added(self, element, pad):
+ caps = pad.get_caps()
+ name = caps[0].get_name()
+ print '\non_pad_added:', name
+ if name == 'audio/x-raw-float':
+ if not self.apad.is_linked(): # Only link once
+ pad.link(self.apad)
+
+
+ def on_eos(self, bus, msg):
+ print '\non_eos'
+ self.mainloop.quit()
+
-from gstfile import Discoverer, time_to_string
-
-class AudioSource(gst.Bin):
- """A bin for audio sources with proper audio converters"""
-
- def __init__(self, filename, caps):
- gst.Bin.__init__(self)
- self.filename = filename
- self.outcaps = caps
-
- self.filesrc = gst.element_factory_make("filesrc")
- self.filesrc.set_property("location", self.filename)
- self.dbin = gst.element_factory_make("decodebin")
- self.ident = gst.element_factory_make("identity")
- self.audioconvert = gst.element_factory_make("audioconvert")
- self.audioscale = gst.element_factory_make("audioscale")
-
- self.add_many(self.filesrc, self.dbin, self.ident,
- self.audioconvert, self.audioscale)
- self.filesrc.link(self.dbin)
- self.audioconvert.link(self.audioscale)
- self.audioscale.link(self.ident, caps)
- self.add_ghost_pad(self.ident.get_pad("src"), "src")
-
- self.dbin.connect("new-decoded-pad", self._new_decoded_pad_cb)
-
- def _new_decoded_pad_cb(self, dbin, pad, is_last):
- if not "audio" in pad.get_caps().to_string():
- return
- pad.link(self.audioconvert.get_pad("sink"))
-
-gobject.type_register(AudioSource)
-
-class AudioConcat(gst.Thread):
- """A Gstreamer thread that concatenates a series of audio files to another audio file"""
-
- def __init__(self, infiles, outfile, audioenc="rawvorbisenc", muxer="oggmux"):
- gst.Thread.__init__(self)
- self.infiles = infiles
- self.outfile = outfile
- self.audioenc = gst.element_factory_make(audioenc)
- if not self.audioenc:
- raise NameError, str(audioenc + " audio encoder is not available")
- self.muxer = gst.element_factory_make(muxer)
- if not self.muxer:
- raise NameError, str(muxer + " muxer is not available")
- self.filesink = gst.element_factory_make("filesink")
- self.filesink.set_property("location", self.outfile)
-
- self.timeline = gst.element_factory_make("gnltimeline")
- self.audiocomp = gst.element_factory_make("gnlcomposition", "audiocomp")
-
- self.audioconvert = gst.element_factory_make("audioconvert")
- self.add_many(self.timeline, self.audioconvert,
- self.audioenc, self.muxer, self.filesink)
-
- ## identity perfect stream check !
- identity = gst.element_factory_make("identity")
- identity.set_property("check-perfect", True)
- self.add(identity)
-
- #self.audioconvert.link(self.audioenc)
- if not self.audioconvert.link(identity):
- print "couldn't link audioconv -> ident"
- if not identity.link(self.audioenc):
- print "couldn't link ident -> audioenc"
- self.audioenc.link(self.muxer)
- self.muxer.link(self.filesink)
-
- self.timeline.add(self.audiocomp)
-
- caps = gst.caps_from_string("audio/x-raw-int,channels=2,rate=44100,depth=16")
- pos = 0L
- for infile in self.infiles:
- d = Discoverer(infile)
- if not d.audiolength:
- continue
- print "file", infile, "has length", time_to_string(d.audiolength)
- asource = AudioSource(infile, caps)
- gnlsource = gst.element_factory_make("gnlsource")
- gnlsource.set_property("element", asource)
- gnlsource.set_property("media-start", 0L)
- gnlsource.set_property("media-stop", d.audiolength)
- gnlsource.set_property("start", pos)
- gnlsource.set_property("stop", pos + d.audiolength)
- self.audiocomp.add(gnlsource)
- pos += d.audiolength
-
- self.timeline.get_pad("src_audiocomp").link(self.audioconvert.get_pad("sink"))
- timelineprobe = gst.Probe(False, self.timelineprobe)
- self.timeline.get_pad("src_audiocomp").add_probe(timelineprobe)
-
- def timelineprobe(self, probe, data):
- if isinstance(data, gst.Buffer):
- print "timeline outputs buffer", data.timestamp, data.duration
- else:
- print "timeline ouputs event", data.type
- return True
-
-gobject.type_register(AudioConcat)
-
-def eos_cb(pipeline):
- sys.exit()
-
-if __name__ == "__main__":
- if len(sys.argv) < 3:
- print "Usage : %s <input file(s)> <output file>" % sys.argv[0]
- print "\tCreates an ogg file from all the audio input files"
- sys.exit()
- if not gst.element_factory_make("gnltimeline"):
- print "You need the gnonlin elements installed (http://gnonlin.sf.net/)"
- sys.exit()
- concat = AudioConcat(sys.argv[1:-1], sys.argv[-1])
- concat.connect("eos", eos_cb)
- concat.set_state(gst.STATE_PLAYING)
- gst.main()
+ def on_error(self, bus, msg):
+ error = msg.parse_error()
+ print '\non_error:', error[1]
+ self.mainloop.quit()
+
+
+
+
+if __name__ == '__main__':
+ if len(sys.argv) >= 3:
+ AudioConcat(sys.argv[1:-1], sys.argv[-1])
+ else:
+ print 'Usage: %s <input_file(s)> <output_file>' % sys.argv[0]
+ print 'Example: %s song1.mp3 song2.ogg output.ogg' % sys.argv[0]
projects / platform / upstream / gstreamer.git / commitdiff