x86: dcadsp: implement int8x8_fmul_int32

For the callable function (as opposed to the inline one):
         C  SSE  SSE2  SSE4
Win32:  47   42   29    26
Win64:  30   33   25    23
The SSE version is neither compiled nor set for ARCH_X86_64, as the
inlinable function takes over.

Signed-off-by: Janne Grunau <janne-libav@jannau.net>

1 files changed, 47 insertions, 0 deletions

diff --git a/libavcodec/x86/dcadsp_init.c b/libavcodec/x86/dcadsp_init.c
new file mode 100644
index 0000000000..976d8a3ba3
--- /dev/null
+++ b/libavcodec/x86/dcadsp_init.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2012-2014 Christophe Gisquet <christophe.gisquet@gmail.com>
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/x86/cpu.h"
+#include "libavcodec/dcadsp.h"
+
+void ff_int8x8_fmul_int32_sse(float *dst, const int8_t *src, int scale);
+void ff_int8x8_fmul_int32_sse2(float *dst, const int8_t *src, int scale);
+void ff_int8x8_fmul_int32_sse4(float *dst, const int8_t *src, int scale);
+
+av_cold void ff_dcadsp_init_x86(DCADSPContext *s)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    if (EXTERNAL_SSE(cpu_flags)) {
+#if ARCH_X86_32
+        s->int8x8_fmul_int32 = ff_int8x8_fmul_int32_sse;
+#endif
+    }
+
+    if (EXTERNAL_SSE2(cpu_flags)) {
+        s->int8x8_fmul_int32 = ff_int8x8_fmul_int32_sse2;
+    }
+
+    if (EXTERNAL_SSE4(cpu_flags)) {
+        s->int8x8_fmul_int32 = ff_int8x8_fmul_int32_sse4;
+    }
+}