pitivi r1283 - trunk/pitivi

[edwardrv svn gnome org]

Author: edwardrv
Date: Fri Sep 26 19:43:24 2008
New Revision: 1283
URL: http://svn.gnome.org/viewvc/pitivi?rev=1283&view=rev

Log:
New module (pitivi.device) for Device handling, probing and listing.
Not complete yet.

Added:
   trunk/pitivi/device.py
Modified:
   trunk/pitivi/Makefile.am

Modified: trunk/pitivi/Makefile.am
==============================================================================
--- trunk/pitivi/Makefile.am	(original)
+++ trunk/pitivi/Makefile.am	Fri Sep 26 19:43:24 2008
@@ -11,6 +11,7 @@
 	bin.py 		\
 	check.py 	\
 	configure.py 	\
+	device.py	\
 	discoverer.py 	\
 	dnd.py 		\
 	effects.py	\

Added: trunk/pitivi/device.py
==============================================================================
--- (empty file)
+++ trunk/pitivi/device.py	Fri Sep 26 19:43:24 2008
@@ -0,0 +1,120 @@
+#!/usr/bin/python
+# PiTiVi , Non-linear video editor
+#
+#       device.py
+#
+# Copyright (c) 2008, Edward Hervey <bilboed bilboed com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This program 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this program; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+"""
+Classes and Methods for Device handling and usage
+"""
+
+from objectfactory import SourceFactory
+
+(AUDIO_DEVICE,
+ VIDEO_DEVICE,
+ UNKNOWN_MEDIA_DEVICE) = range(3)
+
+(SOURCE_DEVICE,
+ SINK_DEVICE,
+ UNKNOWN_DIRECTION_DEVICE) = range(3)
+
+# A device can be categorized as follows:
+# Media type handled:
+# * audio
+# * video
+# * unkown ?
+#
+# Direction:
+# * source : produces data
+# * sink : consumes data
+#
+
+class DeviceProbe(object):
+    """
+    Allows listing of the various devices available.
+
+    It can also signal devices (dis)appearing.
+
+    This should be subclassed
+    """
+
+    def __init__(self):
+        pass
+
+    def getSourceDevices(self, media_type):
+        """ Returns a list of available SourceDeviceFactory for
+        the given mediatype
+        """
+        raise NotImplementedError
+
+    def getSinkDevices(self, media_type):
+        """ Returns a list of available SinkDeviceFactory for
+        the given mediatype
+        """
+        raise NotImplementedError
+
+class HalDeviceProbe(DeviceProbe):
+    """
+    Probes for devices using HAL
+    """
+
+    def __init__(self):
+        DeviceProbe.__init__(self)
+        # install dbus listener
+        # FIXME: Finish implementing
+
+class SourceDeviceFactory(SourceFactory):
+    pass
+
+class AlsaSourceDeviceFactory(SourceDeviceFactory):
+
+    def __init__(self, card, device):
+        SourceDeviceFactory.__init__(self)
+        self.setAudio(True)
+        self._card = card
+        self._device = device
+
+    def makeAudioBin(self):
+        alsa = gst.element_factory_make("alsasrc")
+        alsa.set_property("device", "hw:%d,%d" % (self._card, self._device))
+        return alsa
+
+class V4LSourceDeviceFactory(SourceDeviceFactory):
+
+    def __init__(self, device):
+        SourceDeviceFactory.__init__(self)
+        self.setAudio(True)
+        self._device = device
+
+    def makeVideoBin(self):
+        v4l = gst.element_factory_make("v4lsrc")
+        v4l.set_property("device", self._device)
+        return v4l
+
+class V4L2SourceDeviceFactory(SourceDeviceFactory):
+
+    def __init__(self, device):
+        SourceDeviceFactory.__init__(self)
+        self.setAudio(True)
+        self._device = device
+
+    def makeVideoBin(self):
+        v4l2 = gst.element_factory_make("v4l2src")
+        v4l2.set_property("device", self._device)
+        return v4l2