162 lines
5 KiB
C++
162 lines
5 KiB
C++
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/* Copyright (c) 2007-2008 CSIRO
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Copyright (c) 2007-2009 Xiph.Org Foundation
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Written by Jean-Marc Valin */
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/**
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@file pitch.h
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@brief Pitch analysis
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*/
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/*
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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
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notice, 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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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef PITCH_MIPSR1_H
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#define PITCH_MIPSR1_H
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#define OVERRIDE_DUAL_INNER_PROD
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static inline void dual_inner_prod(const opus_val16 *x, const opus_val16 *y01, const opus_val16 *y02,
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int N, opus_val32 *xy1, opus_val32 *xy2, int arch)
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{
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int j;
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opus_val32 xy01=0;
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opus_val32 xy02=0;
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(void)arch;
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asm volatile("MULT $ac1, $0, $0");
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asm volatile("MULT $ac2, $0, $0");
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/* Compute the norm of X+Y and X-Y as |X|^2 + |Y|^2 +/- sum(xy) */
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for (j=0;j<N;j++)
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{
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asm volatile("MADD $ac1, %0, %1" : : "r" ((int)x[j]), "r" ((int)y01[j]));
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asm volatile("MADD $ac2, %0, %1" : : "r" ((int)x[j]), "r" ((int)y02[j]));
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++j;
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asm volatile("MADD $ac1, %0, %1" : : "r" ((int)x[j]), "r" ((int)y01[j]));
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asm volatile("MADD $ac2, %0, %1" : : "r" ((int)x[j]), "r" ((int)y02[j]));
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}
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asm volatile ("mflo %0, $ac1": "=r"(xy01));
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asm volatile ("mflo %0, $ac2": "=r"(xy02));
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*xy1 = xy01;
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*xy2 = xy02;
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}
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static inline void xcorr_kernel_mips(const opus_val16 * x,
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const opus_val16 * y, opus_val32 sum[4], int len)
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{
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int j;
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opus_val16 y_0, y_1, y_2, y_3;
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opus_int64 sum_0, sum_1, sum_2, sum_3;
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sum_0 = (opus_int64)sum[0];
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sum_1 = (opus_int64)sum[1];
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sum_2 = (opus_int64)sum[2];
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sum_3 = (opus_int64)sum[3];
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y_3=0; /* gcc doesn't realize that y_3 can't be used uninitialized */
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y_0=*y++;
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y_1=*y++;
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y_2=*y++;
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for (j=0;j<len-3;j+=4)
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{
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opus_val16 tmp;
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tmp = *x++;
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y_3=*y++;
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sum_0 = __builtin_mips_madd( sum_0, tmp, y_0);
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sum_1 = __builtin_mips_madd( sum_1, tmp, y_1);
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sum_2 = __builtin_mips_madd( sum_2, tmp, y_2);
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sum_3 = __builtin_mips_madd( sum_3, tmp, y_3);
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tmp=*x++;
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y_0=*y++;
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sum_0 = __builtin_mips_madd( sum_0, tmp, y_1 );
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sum_1 = __builtin_mips_madd( sum_1, tmp, y_2 );
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sum_2 = __builtin_mips_madd( sum_2, tmp, y_3);
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sum_3 = __builtin_mips_madd( sum_3, tmp, y_0);
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tmp=*x++;
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y_1=*y++;
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sum_0 = __builtin_mips_madd( sum_0, tmp, y_2 );
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sum_1 = __builtin_mips_madd( sum_1, tmp, y_3 );
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sum_2 = __builtin_mips_madd( sum_2, tmp, y_0);
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sum_3 = __builtin_mips_madd( sum_3, tmp, y_1);
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tmp=*x++;
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y_2=*y++;
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sum_0 = __builtin_mips_madd( sum_0, tmp, y_3 );
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sum_1 = __builtin_mips_madd( sum_1, tmp, y_0 );
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sum_2 = __builtin_mips_madd( sum_2, tmp, y_1);
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sum_3 = __builtin_mips_madd( sum_3, tmp, y_2);
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}
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if (j++<len)
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{
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opus_val16 tmp = *x++;
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y_3=*y++;
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sum_0 = __builtin_mips_madd( sum_0, tmp, y_0 );
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sum_1 = __builtin_mips_madd( sum_1, tmp, y_1 );
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sum_2 = __builtin_mips_madd( sum_2, tmp, y_2);
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sum_3 = __builtin_mips_madd( sum_3, tmp, y_3);
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}
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if (j++<len)
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{
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opus_val16 tmp=*x++;
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y_0=*y++;
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sum_0 = __builtin_mips_madd( sum_0, tmp, y_1 );
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sum_1 = __builtin_mips_madd( sum_1, tmp, y_2 );
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sum_2 = __builtin_mips_madd( sum_2, tmp, y_3);
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sum_3 = __builtin_mips_madd( sum_3, tmp, y_0);
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}
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if (j<len)
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{
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opus_val16 tmp=*x++;
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y_1=*y++;
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sum_0 = __builtin_mips_madd( sum_0, tmp, y_2 );
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sum_1 = __builtin_mips_madd( sum_1, tmp, y_3 );
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sum_2 = __builtin_mips_madd( sum_2, tmp, y_0);
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sum_3 = __builtin_mips_madd( sum_3, tmp, y_1);
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}
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sum[0] = (opus_val32)sum_0;
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sum[1] = (opus_val32)sum_1;
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sum[2] = (opus_val32)sum_2;
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sum[3] = (opus_val32)sum_3;
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}
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#define OVERRIDE_XCORR_KERNEL
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#define xcorr_kernel(x, y, sum, len, arch) \
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((void)(arch), xcorr_kernel_mips(x, y, sum, len))
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#endif /* PITCH_MIPSR1_H */
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