221 lines
6.5 KiB
C
221 lines
6.5 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_H
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#define PITCH_H
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#include "modes.h"
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#include "cpu_support.h"
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#if (defined(OPUS_X86_MAY_HAVE_SSE) && !defined(FIXED_POINT)) \
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|| ((defined(OPUS_X86_MAY_HAVE_SSE4_1) || defined(OPUS_X86_MAY_HAVE_SSE2)) && defined(FIXED_POINT))
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#include "x86/pitch_sse.h"
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#endif
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#if defined(MIPSr1_ASM)
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#include "mips/pitch_mipsr1.h"
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#endif
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#if ((defined(OPUS_ARM_ASM) && defined(FIXED_POINT)) \
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|| defined(OPUS_ARM_MAY_HAVE_NEON_INTR))
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# include "arm/pitch_arm.h"
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#endif
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void pitch_downsample(celt_sig * OPUS_RESTRICT x[], opus_val16 * OPUS_RESTRICT x_lp,
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int len, int C, int arch);
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void pitch_search(const opus_val16 * OPUS_RESTRICT x_lp, opus_val16 * OPUS_RESTRICT y,
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int len, int max_pitch, int *pitch, int arch);
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opus_val16 remove_doubling(opus_val16 *x, int maxperiod, int minperiod,
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int N, int *T0, int prev_period, opus_val16 prev_gain, int arch);
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/* OPT: This is the kernel you really want to optimize. It gets used a lot
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by the prefilter and by the PLC. */
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static OPUS_INLINE void xcorr_kernel_c(const opus_val16 * x, 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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celt_assert(len>=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] = MAC16_16(sum[0],tmp,y_0);
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sum[1] = MAC16_16(sum[1],tmp,y_1);
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sum[2] = MAC16_16(sum[2],tmp,y_2);
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sum[3] = MAC16_16(sum[3],tmp,y_3);
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tmp=*x++;
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y_0=*y++;
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sum[0] = MAC16_16(sum[0],tmp,y_1);
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sum[1] = MAC16_16(sum[1],tmp,y_2);
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sum[2] = MAC16_16(sum[2],tmp,y_3);
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sum[3] = MAC16_16(sum[3],tmp,y_0);
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tmp=*x++;
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y_1=*y++;
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sum[0] = MAC16_16(sum[0],tmp,y_2);
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sum[1] = MAC16_16(sum[1],tmp,y_3);
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sum[2] = MAC16_16(sum[2],tmp,y_0);
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sum[3] = MAC16_16(sum[3],tmp,y_1);
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tmp=*x++;
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y_2=*y++;
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sum[0] = MAC16_16(sum[0],tmp,y_3);
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sum[1] = MAC16_16(sum[1],tmp,y_0);
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sum[2] = MAC16_16(sum[2],tmp,y_1);
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sum[3] = MAC16_16(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] = MAC16_16(sum[0],tmp,y_0);
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sum[1] = MAC16_16(sum[1],tmp,y_1);
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sum[2] = MAC16_16(sum[2],tmp,y_2);
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sum[3] = MAC16_16(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] = MAC16_16(sum[0],tmp,y_1);
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sum[1] = MAC16_16(sum[1],tmp,y_2);
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sum[2] = MAC16_16(sum[2],tmp,y_3);
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sum[3] = MAC16_16(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] = MAC16_16(sum[0],tmp,y_2);
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sum[1] = MAC16_16(sum[1],tmp,y_3);
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sum[2] = MAC16_16(sum[2],tmp,y_0);
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sum[3] = MAC16_16(sum[3],tmp,y_1);
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}
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}
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#ifndef OVERRIDE_XCORR_KERNEL
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#define xcorr_kernel(x, y, sum, len, arch) \
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((void)(arch),xcorr_kernel_c(x, y, sum, len))
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#endif /* OVERRIDE_XCORR_KERNEL */
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static OPUS_INLINE void dual_inner_prod_c(const opus_val16 *x, const opus_val16 *y01, const opus_val16 *y02,
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int N, opus_val32 *xy1, opus_val32 *xy2)
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{
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int i;
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opus_val32 xy01=0;
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opus_val32 xy02=0;
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for (i=0;i<N;i++)
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{
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xy01 = MAC16_16(xy01, x[i], y01[i]);
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xy02 = MAC16_16(xy02, x[i], y02[i]);
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}
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*xy1 = xy01;
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*xy2 = xy02;
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}
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#ifndef OVERRIDE_DUAL_INNER_PROD
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# define dual_inner_prod(x, y01, y02, N, xy1, xy2, arch) \
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((void)(arch),dual_inner_prod_c(x, y01, y02, N, xy1, xy2))
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#endif
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/*We make sure a C version is always available for cases where the overhead of
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vectorization and passing around an arch flag aren't worth it.*/
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static OPUS_INLINE opus_val32 celt_inner_prod_c(const opus_val16 *x,
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const opus_val16 *y, int N)
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{
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int i;
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opus_val32 xy=0;
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for (i=0;i<N;i++)
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xy = MAC16_16(xy, x[i], y[i]);
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return xy;
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}
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#if !defined(OVERRIDE_CELT_INNER_PROD)
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# define celt_inner_prod(x, y, N, arch) \
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((void)(arch),celt_inner_prod_c(x, y, N))
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#endif
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#ifdef NON_STATIC_COMB_FILTER_CONST_C
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void comb_filter_const_c(opus_val32 *y, opus_val32 *x, int T, int N,
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opus_val16 g10, opus_val16 g11, opus_val16 g12);
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#endif
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#ifdef FIXED_POINT
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opus_val32
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#else
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void
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#endif
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celt_pitch_xcorr_c(const opus_val16 *_x, const opus_val16 *_y,
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opus_val32 *xcorr, int len, int max_pitch);
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#if !defined(OVERRIDE_PITCH_XCORR)
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/*Is run-time CPU detection enabled on this platform?*/
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# if defined(OPUS_HAVE_RTCD) && (defined(OPUS_ARM_ASM) \
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|| (defined(OPUS_ARM_MAY_HAVE_NEON_INTR) \
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&& !defined(OPUS_ARM_PRESUME_NEON_INTR)))
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extern
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# if defined(FIXED_POINT)
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opus_val32
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# else
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void
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# endif
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(*const CELT_PITCH_XCORR_IMPL[OPUS_ARCHMASK+1])(const opus_val16 *,
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const opus_val16 *, opus_val32 *, int, int);
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# define OVERRIDE_PITCH_XCORR
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# define celt_pitch_xcorr(_x, _y, xcorr, len, max_pitch, arch) \
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((*CELT_PITCH_XCORR_IMPL[(arch)&OPUS_ARCHMASK])(_x, _y, \
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xcorr, len, max_pitch))
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# else
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#ifdef FIXED_POINT
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opus_val32
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#else
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void
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#endif
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celt_pitch_xcorr(const opus_val16 *_x, const opus_val16 *_y,
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opus_val32 *xcorr, int len, int max_pitch, int arch);
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# endif
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#endif
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#endif
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