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diff --git a/media/libopus/silk/mips/sigproc_fix_mipsr1.h b/media/libopus/silk/mips/sigproc_fix_mipsr1.h
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+++ b/media/libopus/silk/mips/sigproc_fix_mipsr1.h
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+/***********************************************************************
+Copyright (c) 2006-2011, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Internet Society, IETF or IETF Trust, nor the
+names of specific contributors, may be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SILK_SIGPROC_FIX_MIPSR1_H
+#define SILK_SIGPROC_FIX_MIPSR1_H
+
+#undef silk_SAT16
+static inline short int silk_SAT16(int a)
+{
+    int c;
+    c = __builtin_mips_shll_s_w(a, 16);
+    c = c>>16;
+
+    return c;
+}
+
+#undef silk_LSHIFT_SAT32
+static inline int silk_LSHIFT_SAT32(int a, int shift)
+{
+    int r;
+
+    r = __builtin_mips_shll_s_w(a, shift);
+
+    return r;
+}
+
+#undef silk_RSHIFT_ROUND
+static inline int silk_RSHIFT_ROUND(int a, int shift)
+{
+    int r;
+
+    r = __builtin_mips_shra_r_w(a, shift);
+    return r;
+}
+
+#endif /* SILK_SIGPROC_FIX_MIPSR1_H */