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examples/: Removed gst123 and vorbisplay examples which weren't working with 0.10, and replaced them with decodebin.py
Original commit message from CVS: reviewed by: Edward Hervey <edward@fluendo.com> * examples/decodebin.py: * examples/gst123: * examples/vorbisplay.py: Removed gst123 and vorbisplay examples which weren't working with 0.10, and replaced them with decodebin.py Closes #362183 and #362202
This commit is contained in:
Edward Hervey
parent
71f58a44b4
commit
5b2c08ac37
4 changed files with 120 additions and 244 deletions
11
ChangeLog
11
ChangeLog
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@ -1,3 +1,14 @@
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2006-10-20 Jason Gerard DeRose <jderose@jasonderose.org>
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reviewed by: Edward Hervey <edward@fluendo.com>
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* examples/decodebin.py:
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* examples/gst123:
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* examples/vorbisplay.py:
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Removed gst123 and vorbisplay examples which weren't working with
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0.10, and replaced them with decodebin.py
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Closes #362183 and #362202
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2006-10-20 Edward Hervey <edward@fluendo.com>
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2006-10-20 Edward Hervey <edward@fluendo.com>
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* examples/audioconcat.py:
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* examples/audioconcat.py:
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109
examples/decodebin.py
Normal file
109
examples/decodebin.py
Normal file
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@ -0,0 +1,109 @@
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#!/usr/bin/env python
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# decodebin.py - Audio autopluging example using 'decodebin' element
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# Copyright (C) 2006 Jason Gerard DeRose <jderose@jasonderose.org>
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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., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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import sys
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import gobject
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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 Decodebin:
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def __init__(self, location):
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# The pipeline
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self.pipeline = gst.Pipeline()
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# Create bus and connect several handlers
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self.bus = self.pipeline.get_bus()
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self.bus.add_signal_watch()
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self.bus.connect('message::eos', self.on_eos)
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self.bus.connect('message::tag', self.on_tag)
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self.bus.connect('message::error', self.on_error)
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# Create elements
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self.src = gst.element_factory_make('filesrc')
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self.dec = gst.element_factory_make('decodebin')
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self.conv = gst.element_factory_make('audioconvert')
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self.rsmpl = gst.element_factory_make('audioresample')
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self.sink = gst.element_factory_make('alsasink')
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# Set 'location' property on filesrc
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self.src.set_property('location', location)
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# Connect handler for 'new-decoded-pad' signal
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self.dec.connect('new-decoded-pad', self.on_new_decoded_pad)
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# Add elements to pipeline
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self.pipeline.add(self.src, self.dec, self.conv, self.rsmpl, self.sink)
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# Link *some* elements
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# This is completed in self.on_new_decoded_pad()
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self.src.link(self.dec)
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gst.element_link_many(self.conv, self.rsmpl, self.sink)
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# Reference used in self.on_new_decoded_pad()
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self.apad = self.conv.get_pad('sink')
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# The MainLoop
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self.mainloop = gobject.MainLoop()
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# And off we go!
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self.pipeline.set_state(gst.STATE_PLAYING)
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self.mainloop.run()
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def on_new_decoded_pad(self, element, pad, last):
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caps = pad.get_caps()
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name = caps[0].get_name()
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print 'on_new_decoded_pad:', name
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if name == 'audio/x-raw-float' or name == 'audio/x-raw-int':
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if not self.apad.is_linked(): # Only link once
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pad.link(self.apad)
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def on_eos(self, bus, msg):
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print 'on_eos'
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self.mainloop.quit()
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def on_tag(self, bus, msg):
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taglist = msg.parse_tag()
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print 'on_tag:'
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for key in taglist.keys():
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print '\t%s = %s' % (key, taglist[key])
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def on_error(self, bus, msg):
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error = msg.parse_error()
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print 'on_error:', error[1]
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self.mainloop.quit()
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if __name__ == '__main__':
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if len(sys.argv) == 2:
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Decodebin(sys.argv[1])
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else:
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print 'Usage: %s /path/to/media/file' % sys.argv[0]
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111
examples/gst123
111
examples/gst123
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#!/usr/bin/env python
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# -*- Mode: python -*-
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import getopt
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import sys
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import gst
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"""Usage: gst123 [<options>] <input file> ...
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-h, --help this help
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-V, --version display gst123 version
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-d, --device=d uses 'd' as an output device
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Possible devices are ('*'=live, '@'=file):
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null* wav@ raw@ au@ arts* esd* oss*
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-f, --file=filename Set the output filename for a previously
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specified file device (with -d).
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-k n, --skip n Skip the first 'n' seconds
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-b n, --buffer n use an input buffer of 'n' kilobytes
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-v, --verbose display progress and other status information
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-q, --quiet don't display anything (no title)
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-z, --shuffle shuffle play"""
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def found_tags_cb(element, source, tags):
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for tag in tags.keys():
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if tag in ['title', 'artist', 'genre', 'album']:
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ntag = tag[0].upper() + tag[1:] + ':'
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print '%-8s %s' % (ntag, tags[tag])
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def error_cb(bin, element, error, debug):
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print error
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raise SystemExit
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def pad_notify_caps_cb(pad, arg):
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caps = pad.get_negotiated_caps()
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if not caps:
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return
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for structure in caps:
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print 'Bitstream is %(channels)d channel(s), %(rate)dHz' % structure
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def playfile(filename):
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bin = gst.Thread('player')
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bin.connect('eos', lambda bin: gst.main_quit())
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bin.connect('error', error_cb)
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source = gst.element_factory_make('filesrc', 'src')
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source.set_property('location', filename)
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spider = gst.element_factory_make('spider', 'spider')
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spider.connect('found-tag', found_tags_cb)
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sink = gst.element_factory_make('osssink', 'sink')
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#sink.set_property('release-device', 1)
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pad = sink.get_pad('sink')
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pad.connect('notify::caps', pad_notify_caps_cb)
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bin.add_many(source, spider, sink)
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if not gst.element_link_many(source, spider, sink):
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print "ERROR: could not link"
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sys.exit(1)
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print 'Playing:', filename
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if not bin.set_state(gst.STATE_PLAYING):
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print "ERROR: could not set bin to playing"
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sys.exit(1)
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while 1:
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try:
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if not gst.main():
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break
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except KeyboardInterrupt:
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if not bin.set_state(gst.STATE_PAUSED):
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print "ERROR: could not set bin to paused"
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sys.exit(1)
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sys.stdout.write("Paused. Press Enter to go back to playing.")
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sys.stdout.flush()
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try:
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sys.stdin.readline()
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if not bin.set_state(gst.STATE_PLAYING):
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print "ERROR: could not set bin to playing"
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sys.exit(1)
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print "Playing."
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except KeyboardInterrupt:
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print
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break
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bin.set_state(gst.STATE_NULL)
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def main(args):
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if len(args) > 2:
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print 'usage: gst123 files...'
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return 2
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args2, opt = getopt.getopt(args[1:], 'b:d:f:hk:vVqz',
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['help', 'version', 'device=',
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'file=', 'skip=', 'buffer=',
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'verbose', 'quiet', 'shuffle'])
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for arg in args[1:]:
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try:
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playfile(arg)
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except KeyboardInterrupt:
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raise SystemExit
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if __name__ == '__main__':
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sys.exit(main(sys.argv))
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for i in range(10, 20, 1):
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pass
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#!/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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# gst-python
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# Copyright (C) 2003 David I. Lehn
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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., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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#
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# Author: David I. Lehn <dlehn@users.sourceforge.net>
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#
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import sys
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import gst
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def gst_props_debug_entry(entry, level=0):
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name = entry.get_name()
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type = entry.get_props_type()
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indent = ' '*level
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if type == PROPS_INT_TYPE:
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ret, val = entry.get_int()
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assert ret
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print '%s%s: int %d' % (indent, name, val)
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elif type == PROPS_FLOAT_TYPE:
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ret, val = entry.get_float()
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assert ret
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print '%s%s: float %f' % (indent, name, val)
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elif type == PROPS_FOURCC_TYPE:
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ret, val = entry.get_fourcc()
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assert ret
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print '%s%s: fourcc %c%c%c%c' % (indent, name,
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(val>>0)&0xff,
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(val>>8)&0xff,
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(val>>16)&0xff,
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(val>>24)&0xff)
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elif type == PROPS_BOOLEAN_TYPE:
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ret, val = entry.get_bool()
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assert ret
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print '%s%s: bool %d' % (indent, name, val)
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elif type == PROPS_STRING_TYPE:
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ret, val = entry.get_string()
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assert ret
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print '%s%s: string "%s"' % (indent, name, val)
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elif type == PROPS_INT_RANGE_TYPE:
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ret, min, max = entry.get_int_range()
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assert ret
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print '%s%s: int range %d-%d' % (indent, name, min, max)
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elif type == PROPS_FLOAT_RANGE_TYPE:
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ret, min, max = entry.get_float_range()
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assert ret
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print '%s%s: float range %f-%f' % (indent, name, min, max)
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elif type == PROPS_LIST_TYPE:
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ret, val = entry.get_list()
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assert ret
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print '[list] ('
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for e in val:
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gst_props_debug_entry(e, level+1)
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print ')'
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else:
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print '%sWARNING: %s: unknown property type %d' % (indent, name, type)
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def debug_caps(caps):
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props = caps.get_props()
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ret, plist = props.get_list()
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for e in plist:
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gst_props_debug_entry(e, level=1)
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def streaminfo(sender, pspec):
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assert pspec.name == 'streaminfo'
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caps = sender.get_property(pspec.name)
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print 'streaminfo:'
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debug_caps(caps)
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def metadata(sender, pspec):
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assert pspec.name == 'metadata'
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caps = sender.get_property(pspec.name)
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print 'metadata:'
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debug_caps(caps)
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def decoder_notified(sender, pspec):
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if pspec.name == 'streaminfo':
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streaminfo(sender, pspec)
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elif pspec.name == 'metadata':
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metadata(sender, pspec)
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else:
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print 'notify:', sender, pspec
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def main(args):
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"Basic example to play an Ogg Vorbis stream through OSS"
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if len(args) != 2:
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print 'usage: %s <Ogg Vorbis file>' % args
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return -1
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bin = gst.parse_launch('filesrc name=source ! ' +
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'oggdemux name=demuxer ! ' +
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'vorbisdec name=decoder ! ' +
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'audioconvert ! osssink')
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filesrc = bin.get_by_name('source')
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filesrc.set_property('location', args[1])
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demuxer = bin.get_by_name('demuxer')
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demuxer.connect('notify', decoder_notified)
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decoder = bin.get_by_name('decoder')
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decoder.connect('notify', decoder_notified)
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# start playing
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bin.set_state(gst.STATE_PLAYING);
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try:
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while bin.iterate():
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pass
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except KeyboardInterrupt:
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pass
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# stop the bin
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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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