* #30460: added opus dep
diff --git a/jni/libopus/silk/quant_LTP_gains.c b/jni/libopus/silk/quant_LTP_gains.c
new file mode 100644
index 0000000..f73c0f5
--- /dev/null
+++ b/jni/libopus/silk/quant_LTP_gains.c
@@ -0,0 +1,107 @@
+/***********************************************************************
+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 "main.h"
+
+void silk_quant_LTP_gains(
+ opus_int16 B_Q14[ MAX_NB_SUBFR * LTP_ORDER ], /* I/O (un)quantized LTP gains */
+ opus_int8 cbk_index[ MAX_NB_SUBFR ], /* O Codebook Index */
+ opus_int8 *periodicity_index, /* O Periodicity Index */
+ const opus_int32 W_Q18[ MAX_NB_SUBFR*LTP_ORDER*LTP_ORDER ], /* I Error Weights in Q18 */
+ opus_int mu_Q9, /* I Mu value (R/D tradeoff) */
+ opus_int lowComplexity, /* I Flag for low complexity */
+ const opus_int nb_subfr /* I number of subframes */
+)
+{
+ opus_int j, k, cbk_size;
+ opus_int8 temp_idx[ MAX_NB_SUBFR ];
+ const opus_uint8 *cl_ptr_Q5;
+ const opus_int8 *cbk_ptr_Q7;
+ const opus_int16 *b_Q14_ptr;
+ const opus_int32 *W_Q18_ptr;
+ opus_int32 rate_dist_Q14_subfr, rate_dist_Q14, min_rate_dist_Q14;
+
+ /***************************************************/
+ /* iterate over different codebooks with different */
+ /* rates/distortions, and choose best */
+ /***************************************************/
+ min_rate_dist_Q14 = silk_int32_MAX;
+ for( k = 0; k < 3; k++ ) {
+ cl_ptr_Q5 = silk_LTP_gain_BITS_Q5_ptrs[ k ];
+ cbk_ptr_Q7 = silk_LTP_vq_ptrs_Q7[ k ];
+ cbk_size = silk_LTP_vq_sizes[ k ];
+
+ /* Set up pointer to first subframe */
+ W_Q18_ptr = W_Q18;
+ b_Q14_ptr = B_Q14;
+
+ rate_dist_Q14 = 0;
+ for( j = 0; j < nb_subfr; j++ ) {
+ silk_VQ_WMat_EC(
+ &temp_idx[ j ], /* O index of best codebook vector */
+ &rate_dist_Q14_subfr, /* O best weighted quantization error + mu * rate */
+ b_Q14_ptr, /* I input vector to be quantized */
+ W_Q18_ptr, /* I weighting matrix */
+ cbk_ptr_Q7, /* I codebook */
+ cl_ptr_Q5, /* I code length for each codebook vector */
+ mu_Q9, /* I tradeoff between weighted error and rate */
+ cbk_size /* I number of vectors in codebook */
+ );
+
+ rate_dist_Q14 = silk_ADD_POS_SAT32( rate_dist_Q14, rate_dist_Q14_subfr );
+
+ b_Q14_ptr += LTP_ORDER;
+ W_Q18_ptr += LTP_ORDER * LTP_ORDER;
+ }
+
+ /* Avoid never finding a codebook */
+ rate_dist_Q14 = silk_min( silk_int32_MAX - 1, rate_dist_Q14 );
+
+ if( rate_dist_Q14 < min_rate_dist_Q14 ) {
+ min_rate_dist_Q14 = rate_dist_Q14;
+ *periodicity_index = (opus_int8)k;
+ silk_memcpy( cbk_index, temp_idx, nb_subfr * sizeof( opus_int8 ) );
+ }
+
+ /* Break early in low-complexity mode if rate distortion is below threshold */
+ if( lowComplexity && ( rate_dist_Q14 < silk_LTP_gain_middle_avg_RD_Q14 ) ) {
+ break;
+ }
+ }
+
+ cbk_ptr_Q7 = silk_LTP_vq_ptrs_Q7[ *periodicity_index ];
+ for( j = 0; j < nb_subfr; j++ ) {
+ for( k = 0; k < LTP_ORDER; k++ ) {
+ B_Q14[ j * LTP_ORDER + k ] = silk_LSHIFT( cbk_ptr_Q7[ cbk_index[ j ] * LTP_ORDER + k ], 7 );
+ }
+ }
+}
+