x86/fixed_dsp: add ff_butterflies_fixed_sse2

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/libavutil/x86/fixed_dsp_init.c b/libavutil/x86/fixed_dsp_init.c
new file mode 100644
index 0000000000..303a2eb922
--- /dev/null
+++ b/libavutil/x86/fixed_dsp_init.c
@@ -0,0 +1,35 @@
+/*
+ * 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 "config.h"
+
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/fixed_dsp.h"
+#include "cpu.h"
+
+void ff_butterflies_fixed_sse2(int *src0, int *src1, int len);
+
+av_cold void ff_fixed_dsp_init_x86(AVFixedDSPContext *fdsp)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    if (EXTERNAL_SSE2(cpu_flags)) {
+        fdsp->butterflies_fixed = ff_butterflies_fixed_sse2;
+    }
+}