* #30460: added opus dep
diff --git a/jni/libopus/silk/resampler_private_AR2.c b/jni/libopus/silk/resampler_private_AR2.c
new file mode 100644
index 0000000..d069f2d
--- /dev/null
+++ b/jni/libopus/silk/resampler_private_AR2.c
@@ -0,0 +1,55 @@
+/***********************************************************************
+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.
+***********************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "SigProc_FIX.h"
+#include "resampler_private.h"
+
+/* Second order AR filter with single delay elements */
+void silk_resampler_private_AR2(
+ opus_int32 S[], /* I/O State vector [ 2 ] */
+ opus_int32 out_Q8[], /* O Output signal */
+ const opus_int16 in[], /* I Input signal */
+ const opus_int16 A_Q14[], /* I AR coefficients, Q14 */
+ opus_int32 len /* I Signal length */
+)
+{
+ opus_int32 k;
+ opus_int32 out32;
+
+ for( k = 0; k < len; k++ ) {
+ out32 = silk_ADD_LSHIFT32( S[ 0 ], (opus_int32)in[ k ], 8 );
+ out_Q8[ k ] = out32;
+ out32 = silk_LSHIFT( out32, 2 );
+ S[ 0 ] = silk_SMLAWB( S[ 1 ], out32, A_Q14[ 0 ] );
+ S[ 1 ] = silk_SMULWB( out32, A_Q14[ 1 ] );
+ }
+}
+