1 files changed, 51 insertions, 0 deletions
diff --git a/libavcodec/x86/sbcdsp_init.c b/libavcodec/x86/sbcdsp_init.c
new file mode 100644
index 0000000000..86effecfdf
--- /dev/null
+++ b/libavcodec/x86/sbcdsp_init.c
@@ -0,0 +1,51 @@
+/*
+ * Bluetooth low-complexity, subband codec (SBC)
+ *
+ * Copyright (C) 2017  Aurelien Jacobs <aurel@gnuage.org>
+ * Copyright (C) 2008-2010  Nokia Corporation
+ * Copyright (C) 2004-2010  Marcel Holtmann <marcel@holtmann.org>
+ * Copyright (C) 2004-2005  Henryk Ploetz <henryk@ploetzli.ch>
+ * Copyright (C) 2005-2006  Brad Midgley <bmidgley@xmission.com>
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * SBC MMX optimization for some basic "building bricks"
+ */
+
+#include "libavutil/cpu.h"
+#include "libavutil/x86/cpu.h"
+#include "libavcodec/sbcdsp.h"
+
+void ff_sbc_analyze_4_mmx(const int16_t *in, int32_t *out, const int16_t *consts);
+void ff_sbc_analyze_8_mmx(const int16_t *in, int32_t *out, const int16_t *consts);
+void ff_sbc_calc_scalefactors_mmx(int32_t sb_sample_f[16][2][8],
+                                  uint32_t scale_factor[2][8],
+                                  int blocks, int channels, int subbands);
+
+av_cold void ff_sbcdsp_init_x86(SBCDSPContext *s)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    if (EXTERNAL_MMX(cpu_flags)) {
+        s->sbc_analyze_4 = ff_sbc_analyze_4_mmx;
+        s->sbc_analyze_8 = ff_sbc_analyze_8_mmx;
+        s->sbc_calc_scalefactors = ff_sbc_calc_scalefactors_mmx;
+    }
+}