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100 lines
2.9 KiB
Python
Executable file
100 lines
2.9 KiB
Python
Executable file
#!/usr/bin/env python
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# -*- Mode: Python -*-
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# vi:si:et:sw=4:sts=4:ts=4
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# GStreamer python bindings
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# Copyright (C) 2002 David I. Lehn <dlehn@users.sourceforge.net>
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# 2004 Johan Dahlin <johan@gnome.org>
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#
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# filesrc.py: implements a file source element completely in python
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Library General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Library General Public License for more details.
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#
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# You should have received a copy of the GNU Library General Public
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# License along with this library; if not, write to the
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# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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# Boston, MA 02110-1301, USA.
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import sys
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import gobject; gobject.threads_init()
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import pygst
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pygst.require('0.10')
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import gst
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class FileSource(gst.BaseSrc):
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__gsttemplates__ = (
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gst.PadTemplate("src",
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gst.PAD_SRC,
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gst.PAD_ALWAYS,
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gst.caps_new_any()),
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)
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blocksize = 4096
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fd = None
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def __init__(self, name):
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self.__gobject_init__()
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self.curoffset = 0
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self.set_name(name)
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def set_property(self, name, value):
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if name == 'location':
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self.fd = open(value, 'r')
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def do_create(self, offset, size):
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if offset != self.curoffset:
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self.fd.seek(offset, 0)
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data = self.fd.read(self.blocksize)
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if data:
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self.curoffset += len(data)
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return gst.FLOW_OK, gst.Buffer(data)
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else:
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return gst.FLOW_UNEXPECTED, None
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gobject.type_register(FileSource)
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def main(args):
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if len(args) != 3:
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print 'Usage: %s input output' % (args[0])
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return -1
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bin = gst.Pipeline('pipeline')
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filesrc = FileSource('filesource')
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assert filesrc
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filesrc.set_property('location', args[1])
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filesink = gst.element_factory_make('filesink', 'sink')
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filesink.set_property('location', args[2])
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bin.add(filesrc, filesink)
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gst.element_link_many(filesrc, filesink)
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bin.set_state(gst.STATE_PLAYING);
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mainloop = gobject.MainLoop()
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def bus_event(bus, message):
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t = message.type
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if t == gst.MESSAGE_EOS:
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mainloop.quit()
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elif t == gst.MESSAGE_ERROR:
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err, debug = message.parse_error()
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print "Error: %s" % err, debug
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mainloop.quit()
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return True
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bin.get_bus().add_watch(bus_event)
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mainloop.run()
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bin.set_state(gst.STATE_NULL)
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if __name__ == '__main__':
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sys.exit(main(sys.argv))
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