[transmageddon] Fix the assumption that a H264 encoder supports multipass encoding

[Christian Fredrik Kalager Schaller <uraeus src gnome org>]

commit a3cea43aa3c04bff3b52637bf7895899596a07ce
Author: Christian Fredrik Kalager Schaller <uraeus linuxrising org>
Date:   Thu Feb 13 13:46:33 2014 +0100

    Fix the assumption that a H264 encoder supports multipass encoding

 src/transcoder_engine.py |   17 ++++++++++++++---
 src/transmageddon.py     |   15 +++++++++++++--
 2 files changed, 27 insertions(+), 5 deletions(-)
---
diff --git a/src/transcoder_engine.py b/src/transcoder_engine.py
index 4786e82..d9353fa 100644
--- a/src/transcoder_engine.py
+++ b/src/transcoder_engine.py
@@ -73,8 +73,15 @@ class Transcoder(GObject.GObject):
        # if needed create a variable to store the filename of the multipass \
        # statistics file
        if self.multipass != 0:
-           self.cachefile = (str (GLib.get_user_cache_dir()) + "/" + \
+           videoencoderplugin = codecfinder.get_video_encoder_element(self.videodata[0]['outputvideocaps'])
+           videoencoder = Gst.ElementFactory.make(videoencoderplugin,"videoencoder")
+           properties=videoencoder.get_property_names()
+           if "multipass-cache-file" in properties:
+               self.cachefile = (str (GLib.get_user_cache_dir()) + "/" + \
                    "multipass-cache-file" + self.streamdata['timestamp'] + ".log")
+           else:
+               self.multipass=0
+
 
        # gather preset data if relevant
        if self.preset != "nopreset":
@@ -153,8 +160,12 @@ class Transcoder(GObject.GObject):
            self.pipeline.add(self.videoencoder)
            GstPresetType = GObject.type_from_name("GstPreset")
            if GstPresetType in GObject.type_interfaces(self.videoencoder):
-               bob = self.videoencoder.load_preset(passvalue)
-               self.videoencoder.set_property("multipass-cache-file", self.cachefile)
+               self.videoencoder.load_preset(passvalue)
+               properties=self.videoencoder.get_property_names()
+               if "multipass-cache-file" in properties:
+                   self.videoencoder.set_property("multipass-cache-file", self.cachefile)
+               else:
+                   self.multipass=0
            self.multipassfakesink = Gst.ElementFactory.make("fakesink", "multipassfakesink")
            self.pipeline.add(self.multipassfakesink)
            self.videoencoder.set_state(Gst.State.PAUSED)
diff --git a/src/transmageddon.py b/src/transmageddon.py
index cb43c82..9a3f874 100644
--- a/src/transmageddon.py
+++ b/src/transmageddon.py
@@ -59,6 +59,11 @@ dvdfactory=Gst.ElementFactory.find("dvdreadsrc")
 if dvdfactory:
     dvdfactory.set_rank(300)
 
+# Enable this to use vaapi hardware decoding. Seems broken atm.
+#vaapifactory=Gst.ElementFactory.find("vaapidecode")
+#if vaapifactory:
+#    vaapifactory.set_rank(300)
+
 TARGET_TYPE_URI_LIST = 80
 dnd_list = [ ( 'text/uri-list', 0, TARGET_TYPE_URI_LIST ) ]
 
@@ -981,8 +986,14 @@ class TransmageddonUI(Gtk.ApplicationWindow):
        context_id = self.StatusBar.get_context_id("EOS")
        self.StatusBar.push(context_id, (_("Writing %(filename)s") % {'filename': 
self.streamdata['outputfilename']}))
        if self.streamdata['multipass'] != 0:
-           self.passcounter=int(1)
-           self.StatusBar.push(context_id, (_("Pass %(count)d Progress") % {'count': self.passcounter}))
+           videoencoderplugin = codecfinder.get_video_encoder_element(self.videodata[0]['outputvideocaps'])
+           videoencoder = Gst.ElementFactory.make(videoencoderplugin,"videoencoder")
+           properties=videoencoder.get_property_names()
+           if "multipass-cache-file" not in properties:
+              self.multipass=0
+           else:
+               self.passcounter=int(1)
+               self.StatusBar.push(context_id, (_("Pass %(count)d Progress") % {'count': self.passcounter}))
        if self.haveaudio:
            if "samplerate" in self.audiodata[0]:
                # self.check_for_elements()