[pitivi] proxy: Allow setting a different max CPU usage

[Alexandru Băluț <alexbalut src gnome org>]

commit 354e7f461e0657054c5b2d8fd99d1beaa4f73f50
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Sat Mar 18 23:17:59 2017 +0100

    proxy: Allow setting a different max CPU usage
    
    Fixes T7731
    
    Reviewed-by: Thibault Saunier <tsaunier gnome org>
    Differential Revision: https://phabricator.freedesktop.org/D1699

 pitivi/utils/proxy.py |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/pitivi/utils/proxy.py b/pitivi/utils/proxy.py
index 3fdb764..ec307c5 100644
--- a/pitivi/utils/proxy.py
+++ b/pitivi/utils/proxy.py
@@ -50,6 +50,10 @@ GlobalSettings.addConfigOption('numTranscodingJobs',
                                section='proxy',
                                key='num-proxying-jobs',
                                default=4)
+GlobalSettings.addConfigOption("max_cpu_usage",
+                               section="proxy",
+                               key="max-cpu-usage",
+                               default=10)
 
 
 ENCODING_FORMAT_PRORES = "prores-opus-in-matroska.gep"
@@ -386,7 +390,7 @@ class ProxyManager(GObject.Object, Loggable):
         transcoder.props.pipeline.props.video_filter = thumbnailbin
         transcoder.props.pipeline.props.audio_filter = waveformbin
 
-        transcoder.set_cpu_usage(10)
+        transcoder.set_cpu_usage(self.app.settings.max_cpu_usage)
         transcoder.connect("position-updated",
                            self.__proxyingPositionChangedCb,
                            asset)