[pitivi] build: Make gst-transcoder a subproject

[Thibault Saunier <tsaunier src gnome org>]

commit b1508dff0cc687823cd188fc8d25b3814181b8c2
Author: Thibault Saunier <tsaunier gnome org>
Date:   Mon Jul 4 15:07:57 2016 -0400

    build: Make gst-transcoder a subproject
    
    Reviewed-by: Alex Băluț <alexandru balut gmail com>
    Differential Revision: https://phabricator.freedesktop.org/D1154

 meson.build                     |    6 ++++++
 subprojects/gst-transcoder.wrap |    4 ++++
 2 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/meson.build b/meson.build
index c415e53..a2b999f 100644
--- a/meson.build
+++ b/meson.build
@@ -10,6 +10,12 @@ gst_dep = dependency('gstreamer-1.0', version : '>= 1.8.2')
 cairo_dep = dependency('cairo')
 pycairo_dep = dependency('py3cairo')
 
+gst_transcoder_dep = dependency('gst-transcoder-1.0', version : '>= 1.8.1', required : false)
+if gst_transcoder_dep.found()
+else
+    subproject('gst-transcoder')
+endif
+
 pkgdatadir = get_option('datadir') + '/pitivi'
 
 GITVERSION = run_command('git', 'describe', '--always').stdout().strip()
diff --git a/subprojects/gst-transcoder.wrap b/subprojects/gst-transcoder.wrap
new file mode 100644
index 0000000..e2e326b
--- /dev/null
+++ b/subprojects/gst-transcoder.wrap
@@ -0,0 +1,4 @@
+[wrap-git]
+directory=gst-transcoder
+url=https://github.com/pitivi/gst-transcoder
+revision=1.8.1