102 lines
4.2 KiB
C
102 lines
4.2 KiB
C
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/***********************************************************************
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Copyright (c) 2014 Vidyo.
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Copyright (c) 2006-2011, Skype Limited. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of Internet Society, IETF or IETF Trust, nor the
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names of specific contributors, may be used to endorse or promote
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products derived from this software without specific prior written
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permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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***********************************************************************/
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#ifndef SILK_NSQ_H
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#define SILK_NSQ_H
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#include "SigProc_FIX.h"
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#undef silk_short_prediction_create_arch_coef
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static OPUS_INLINE opus_int32 silk_noise_shape_quantizer_short_prediction_c(const opus_int32 *buf32, const opus_int16 *coef16, opus_int order)
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{
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opus_int32 out;
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silk_assert( order == 10 || order == 16 );
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/* Avoids introducing a bias because silk_SMLAWB() always rounds to -inf */
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out = silk_RSHIFT( order, 1 );
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out = silk_SMLAWB( out, buf32[ 0 ], coef16[ 0 ] );
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out = silk_SMLAWB( out, buf32[ -1 ], coef16[ 1 ] );
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out = silk_SMLAWB( out, buf32[ -2 ], coef16[ 2 ] );
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out = silk_SMLAWB( out, buf32[ -3 ], coef16[ 3 ] );
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out = silk_SMLAWB( out, buf32[ -4 ], coef16[ 4 ] );
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out = silk_SMLAWB( out, buf32[ -5 ], coef16[ 5 ] );
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out = silk_SMLAWB( out, buf32[ -6 ], coef16[ 6 ] );
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out = silk_SMLAWB( out, buf32[ -7 ], coef16[ 7 ] );
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out = silk_SMLAWB( out, buf32[ -8 ], coef16[ 8 ] );
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out = silk_SMLAWB( out, buf32[ -9 ], coef16[ 9 ] );
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if( order == 16 )
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{
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out = silk_SMLAWB( out, buf32[ -10 ], coef16[ 10 ] );
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out = silk_SMLAWB( out, buf32[ -11 ], coef16[ 11 ] );
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out = silk_SMLAWB( out, buf32[ -12 ], coef16[ 12 ] );
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out = silk_SMLAWB( out, buf32[ -13 ], coef16[ 13 ] );
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out = silk_SMLAWB( out, buf32[ -14 ], coef16[ 14 ] );
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out = silk_SMLAWB( out, buf32[ -15 ], coef16[ 15 ] );
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}
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return out;
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}
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#define silk_noise_shape_quantizer_short_prediction(in, coef, coefRev, order, arch) ((void)arch,silk_noise_shape_quantizer_short_prediction_c(in, coef, order))
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static OPUS_INLINE opus_int32 silk_NSQ_noise_shape_feedback_loop_c(const opus_int32 *data0, opus_int32 *data1, const opus_int16 *coef, opus_int order)
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{
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opus_int32 out;
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opus_int32 tmp1, tmp2;
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opus_int j;
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tmp2 = data0[0];
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tmp1 = data1[0];
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data1[0] = tmp2;
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out = silk_RSHIFT(order, 1);
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out = silk_SMLAWB(out, tmp2, coef[0]);
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for (j = 2; j < order; j += 2) {
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tmp2 = data1[j - 1];
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data1[j - 1] = tmp1;
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out = silk_SMLAWB(out, tmp1, coef[j - 1]);
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tmp1 = data1[j + 0];
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data1[j + 0] = tmp2;
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out = silk_SMLAWB(out, tmp2, coef[j]);
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}
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data1[order - 1] = tmp1;
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out = silk_SMLAWB(out, tmp1, coef[order - 1]);
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/* Q11 -> Q12 */
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out = silk_LSHIFT32( out, 1 );
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return out;
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}
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#define silk_NSQ_noise_shape_feedback_loop(data0, data1, coef, order, arch) ((void)arch,silk_NSQ_noise_shape_feedback_loop_c(data0, data1, coef, order))
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#if defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
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#include "arm/NSQ_neon.h"
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#endif
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#endif /* SILK_NSQ_H */
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