decoder/ffmpeg: move code to lib/ffmpeg/Init.cxx

Makefile.am

@@ -799,6 +799,7 @@ endif
 if HAVE_FFMPEG
 noinst_LIBRARIES += libffmpeg.a
 libffmpeg_a_SOURCES = \
+	src/lib/ffmpeg/Init.cxx src/lib/ffmpeg/Init.hxx \
 	src/lib/ffmpeg/Time.hxx \
 	src/lib/ffmpeg/Buffer.hxx \
 	src/lib/ffmpeg/LogError.cxx src/lib/ffmpeg/LogError.hxx \

src/decoder/plugins/FfmpegDecoderPlugin.cxx

@@ -26,7 +26,7 @@
 #include "lib/ffmpeg/Domain.hxx"
 #include "lib/ffmpeg/Error.hxx"
 #include "lib/ffmpeg/LogError.hxx"
-#include "lib/ffmpeg/LogCallback.hxx"
+#include "lib/ffmpeg/Init.hxx"
 #include "lib/ffmpeg/Buffer.hxx"
 #include "../DecoderAPI.hxx"
 #include "FfmpegMetaData.hxx"
@@ -76,9 +76,7 @@ mpd_ffmpeg_open_input(AVFormatContext **ic_ptr,
 static bool
 ffmpeg_init(gcc_unused const config_param &param)
 {
-	av_log_set_callback(FfmpegLogCallback);
-
-	av_register_all();
+	FfmpegInit();
 	return true;
 }
 

src/lib/ffmpeg/Init.cxx

+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/* necessary because libavutil/common.h uses UINT64_C */
+#define __STDC_CONSTANT_MACROS
+
+#include "config.h"
+#include "Init.hxx"
+#include "LogCallback.hxx"
+
+extern "C" {
+#include <libavformat/avformat.h>
+}
+
+void
+FfmpegInit()
+{
+	av_log_set_callback(FfmpegLogCallback);
+
+	av_register_all();
+}
+

src/lib/ffmpeg/Init.hxx

+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_FFMPEG_INIT_HXX
+#define MPD_FFMPEG_INIT_HXX
+
+void
+FfmpegInit();
+
+#endif