cannam@154: /***********************************************************************
cannam@154: Copyright (c) 2014 Vidyo.
cannam@154: Copyright (c) 2006-2011, Skype Limited. All rights reserved.
cannam@154: Redistribution and use in source and binary forms, with or without
cannam@154: modification, are permitted provided that the following conditions
cannam@154: are met:
cannam@154: - Redistributions of source code must retain the above copyright notice,
cannam@154: this list of conditions and the following disclaimer.
cannam@154: - Redistributions in binary form must reproduce the above copyright
cannam@154: notice, this list of conditions and the following disclaimer in the
cannam@154: documentation and/or other materials provided with the distribution.
cannam@154: - Neither the name of Internet Society, IETF or IETF Trust, nor the
cannam@154: names of specific contributors, may be used to endorse or promote
cannam@154: products derived from this software without specific prior written
cannam@154: permission.
cannam@154: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
cannam@154: AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
cannam@154: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
cannam@154: ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
cannam@154: LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
cannam@154: CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
cannam@154: SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
cannam@154: INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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cannam@154: ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
cannam@154: POSSIBILITY OF SUCH DAMAGE.
cannam@154: ***********************************************************************/
cannam@154: #ifndef SILK_NSQ_H
cannam@154: #define SILK_NSQ_H
cannam@154: 
cannam@154: #include "SigProc_FIX.h"
cannam@154: 
cannam@154: #undef silk_short_prediction_create_arch_coef
cannam@154: 
cannam@154: static OPUS_INLINE opus_int32 silk_noise_shape_quantizer_short_prediction_c(const opus_int32 *buf32, const opus_int16 *coef16, opus_int order)
cannam@154: {
cannam@154:     opus_int32 out;
cannam@154:     silk_assert( order == 10 || order == 16 );
cannam@154: 
cannam@154:     /* Avoids introducing a bias because silk_SMLAWB() always rounds to -inf */
cannam@154:     out = silk_RSHIFT( order, 1 );
cannam@154:     out = silk_SMLAWB( out, buf32[  0 ], coef16[ 0 ] );
cannam@154:     out = silk_SMLAWB( out, buf32[ -1 ], coef16[ 1 ] );
cannam@154:     out = silk_SMLAWB( out, buf32[ -2 ], coef16[ 2 ] );
cannam@154:     out = silk_SMLAWB( out, buf32[ -3 ], coef16[ 3 ] );
cannam@154:     out = silk_SMLAWB( out, buf32[ -4 ], coef16[ 4 ] );
cannam@154:     out = silk_SMLAWB( out, buf32[ -5 ], coef16[ 5 ] );
cannam@154:     out = silk_SMLAWB( out, buf32[ -6 ], coef16[ 6 ] );
cannam@154:     out = silk_SMLAWB( out, buf32[ -7 ], coef16[ 7 ] );
cannam@154:     out = silk_SMLAWB( out, buf32[ -8 ], coef16[ 8 ] );
cannam@154:     out = silk_SMLAWB( out, buf32[ -9 ], coef16[ 9 ] );
cannam@154: 
cannam@154:     if( order == 16 )
cannam@154:     {
cannam@154:         out = silk_SMLAWB( out, buf32[ -10 ], coef16[ 10 ] );
cannam@154:         out = silk_SMLAWB( out, buf32[ -11 ], coef16[ 11 ] );
cannam@154:         out = silk_SMLAWB( out, buf32[ -12 ], coef16[ 12 ] );
cannam@154:         out = silk_SMLAWB( out, buf32[ -13 ], coef16[ 13 ] );
cannam@154:         out = silk_SMLAWB( out, buf32[ -14 ], coef16[ 14 ] );
cannam@154:         out = silk_SMLAWB( out, buf32[ -15 ], coef16[ 15 ] );
cannam@154:     }
cannam@154:     return out;
cannam@154: }
cannam@154: 
cannam@154: #define silk_noise_shape_quantizer_short_prediction(in, coef, coefRev, order, arch)  ((void)arch,silk_noise_shape_quantizer_short_prediction_c(in, coef, order))
cannam@154: 
cannam@154: 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)
cannam@154: {
cannam@154:     opus_int32 out;
cannam@154:     opus_int32 tmp1, tmp2;
cannam@154:     opus_int j;
cannam@154: 
cannam@154:     tmp2 = data0[0];
cannam@154:     tmp1 = data1[0];
cannam@154:     data1[0] = tmp2;
cannam@154: 
cannam@154:     out = silk_RSHIFT(order, 1);
cannam@154:     out = silk_SMLAWB(out, tmp2, coef[0]);
cannam@154: 
cannam@154:     for (j = 2; j < order; j += 2) {
cannam@154:         tmp2 = data1[j - 1];
cannam@154:         data1[j - 1] = tmp1;
cannam@154:         out = silk_SMLAWB(out, tmp1, coef[j - 1]);
cannam@154:         tmp1 = data1[j + 0];
cannam@154:         data1[j + 0] = tmp2;
cannam@154:         out = silk_SMLAWB(out, tmp2, coef[j]);
cannam@154:     }
cannam@154:     data1[order - 1] = tmp1;
cannam@154:     out = silk_SMLAWB(out, tmp1, coef[order - 1]);
cannam@154:     /* Q11 -> Q12 */
cannam@154:     out = silk_LSHIFT32( out, 1 );
cannam@154:     return out;
cannam@154: }
cannam@154: 
cannam@154: #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))
cannam@154: 
cannam@154: #if defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
cannam@154: #include "arm/NSQ_neon.h"
cannam@154: #endif
cannam@154: 
cannam@154: #endif /* SILK_NSQ_H */