swresample: Add arm&x86 clobber tests

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libswresample/arm/Makefile

@@ -1,2 +1,5 @@
 OBJS      += arm/audio_convert_init.o
+
+OBJS-$(CONFIG_NEON_CLOBBER_TEST) += arm/neontest.o
+
 NEON-OBJS += arm/audio_convert_neon.o

libswresample/arm/neontest.c

@@ -0,0 +1,29 @@
+/*
+ * check NEON registers for clobbers
+ * Copyright (c) 2013 Martin Storsjo
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libswresample/swresample.h"
+#include "libavutil/arm/neontest.h"
+
+wrap(swr_convert(struct SwrContext *s, uint8_t **out, int out_count,
+                 const uint8_t **in , int in_count))
+{
+    testneonclobbers(swr_convert, s, out, out_count, in, in_count);
+}