From a8decf24f7fad57104babffe20398a31201cd3db Mon Sep 17 00:00:00 2001
From: k-m_schindler <k-m_schindler@b956fd51-792f-4845-bead-9b4dfca2ff2c>
Date: Mon, 2 Apr 2012 14:23:40 +0000
Subject: macro for detection of the ffmpeg version

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@2852 b956fd51-792f-4845-bead-9b4dfca2ff2c
---
 dists/autogen/m4/ffmpeg_version.m4 | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 dists/autogen/m4/ffmpeg_version.m4

diff --git a/dists/autogen/m4/ffmpeg_version.m4 b/dists/autogen/m4/ffmpeg_version.m4
new file mode 100644
index 00000000..276b5799
--- /dev/null
+++ b/dists/autogen/m4/ffmpeg_version.m4
@@ -0,0 +1,28 @@
+# This file is part of UltraStar Deluxe
+# Created by the UltraStar Deluxe Team
+
+# SYNOPSIS
+#
+#   AC_FFMPEG_VERSION
+#
+# DESCRIPTION
+#
+#   Determines version of ffmpeg.
+#
+#   Description of the steps of the command line
+#
+# 1) redirect stderr and stdout to stdout
+#    I did not manage in sh, therefore invoke bash
+# 2) grep for the lines with "ffmpeg"
+# 3) grep for the line without "version"
+# 4) cut out the 2nd word, with ' ' as a separator.
+#
+
+AC_DEFUN([AC_FFMPEG_VERSION],
+[
+    AC_MSG_CHECKING([for ffmpeg version])
+    FFMPEG_VERSION=$(bash -c 'ffmpeg -version' 2>&1 | grep ffmpeg | grep -v version | cut -f2 -d\ )
+    AX_EXTRACT_VERSION(FFMPEG, $FFMPEG_VERSION)
+    AC_MSG_RESULT(@<:@$FFMPEG_VERSION@:>@)
+    AC_SUBST(FFMPEG_VERSION)
+])
-- 
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