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Diffstat (limited to 'media/libopus/celt/pitch.h')
| -rw-r--r-- | media/libopus/celt/pitch.h | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/media/libopus/celt/pitch.h b/media/libopus/celt/pitch.h new file mode 100644 index 000000000..d3503532a --- /dev/null +++ b/media/libopus/celt/pitch.h @@ -0,0 +1,200 @@ +/* Copyright (c) 2007-2008 CSIRO + Copyright (c) 2007-2009 Xiph.Org Foundation + Written by Jean-Marc Valin */ +/** + @file pitch.h + @brief Pitch analysis + */ + +/* + 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. + + 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. +*/ + +#ifndef PITCH_H +#define PITCH_H + +#include "modes.h" +#include "cpu_support.h" + +#if (defined(OPUS_X86_MAY_HAVE_SSE) && !defined(FIXED_POINT)) \ + || ((defined(OPUS_X86_MAY_HAVE_SSE4_1) || defined(OPUS_X86_MAY_HAVE_SSE2)) && defined(FIXED_POINT)) +#include "x86/pitch_sse.h" +#endif + +#if defined(MIPSr1_ASM) +#include "mips/pitch_mipsr1.h" +#endif + +#if ((defined(OPUS_ARM_ASM) && defined(FIXED_POINT)) \ + || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)) +# include "arm/pitch_arm.h" +#endif + +void pitch_downsample(celt_sig * OPUS_RESTRICT x[], opus_val16 * OPUS_RESTRICT x_lp, + int len, int C, int arch); + +void pitch_search(const opus_val16 * OPUS_RESTRICT x_lp, opus_val16 * OPUS_RESTRICT y, + int len, int max_pitch, int *pitch, int arch); + +opus_val16 remove_doubling(opus_val16 *x, int maxperiod, int minperiod, + int N, int *T0, int prev_period, opus_val16 prev_gain, int arch); + + +/* OPT: This is the kernel you really want to optimize. It gets used a lot + by the prefilter and by the PLC. */ +static OPUS_INLINE void xcorr_kernel_c(const opus_val16 * x, const opus_val16 * y, opus_val32 sum[4], int len) +{ + int j; + opus_val16 y_0, y_1, y_2, y_3; + celt_assert(len>=3); + y_3=0; /* gcc doesn't realize that y_3 can't be used uninitialized */ + y_0=*y++; + y_1=*y++; + y_2=*y++; + for (j=0;j<len-3;j+=4) + { + opus_val16 tmp; + tmp = *x++; + y_3=*y++; + sum[0] = MAC16_16(sum[0],tmp,y_0); + sum[1] = MAC16_16(sum[1],tmp,y_1); + sum[2] = MAC16_16(sum[2],tmp,y_2); + sum[3] = MAC16_16(sum[3],tmp,y_3); + tmp=*x++; + y_0=*y++; + sum[0] = MAC16_16(sum[0],tmp,y_1); + sum[1] = MAC16_16(sum[1],tmp,y_2); + sum[2] = MAC16_16(sum[2],tmp,y_3); + sum[3] = MAC16_16(sum[3],tmp,y_0); + tmp=*x++; + y_1=*y++; + sum[0] = MAC16_16(sum[0],tmp,y_2); + sum[1] = MAC16_16(sum[1],tmp,y_3); + sum[2] = MAC16_16(sum[2],tmp,y_0); + sum[3] = MAC16_16(sum[3],tmp,y_1); + tmp=*x++; + y_2=*y++; + sum[0] = MAC16_16(sum[0],tmp,y_3); + sum[1] = MAC16_16(sum[1],tmp,y_0); + sum[2] = MAC16_16(sum[2],tmp,y_1); + sum[3] = MAC16_16(sum[3],tmp,y_2); + } + if (j++<len) + { + opus_val16 tmp = *x++; + y_3=*y++; + sum[0] = MAC16_16(sum[0],tmp,y_0); + sum[1] = MAC16_16(sum[1],tmp,y_1); + sum[2] = MAC16_16(sum[2],tmp,y_2); + sum[3] = MAC16_16(sum[3],tmp,y_3); + } + if (j++<len) + { + opus_val16 tmp=*x++; + y_0=*y++; + sum[0] = MAC16_16(sum[0],tmp,y_1); + sum[1] = MAC16_16(sum[1],tmp,y_2); + sum[2] = MAC16_16(sum[2],tmp,y_3); + sum[3] = MAC16_16(sum[3],tmp,y_0); + } + if (j<len) + { + opus_val16 tmp=*x++; + y_1=*y++; + sum[0] = MAC16_16(sum[0],tmp,y_2); + sum[1] = MAC16_16(sum[1],tmp,y_3); + sum[2] = MAC16_16(sum[2],tmp,y_0); + sum[3] = MAC16_16(sum[3],tmp,y_1); + } +} + +#ifndef OVERRIDE_XCORR_KERNEL +#define xcorr_kernel(x, y, sum, len, arch) \ + ((void)(arch),xcorr_kernel_c(x, y, sum, len)) +#endif /* OVERRIDE_XCORR_KERNEL */ + + +static OPUS_INLINE void dual_inner_prod_c(const opus_val16 *x, const opus_val16 *y01, const opus_val16 *y02, + int N, opus_val32 *xy1, opus_val32 *xy2) +{ + int i; + opus_val32 xy01=0; + opus_val32 xy02=0; + for (i=0;i<N;i++) + { + xy01 = MAC16_16(xy01, x[i], y01[i]); + xy02 = MAC16_16(xy02, x[i], y02[i]); + } + *xy1 = xy01; + *xy2 = xy02; +} + +#ifndef OVERRIDE_DUAL_INNER_PROD +# define dual_inner_prod(x, y01, y02, N, xy1, xy2, arch) \ + ((void)(arch),dual_inner_prod_c(x, y01, y02, N, xy1, xy2)) +#endif + +/*We make sure a C version is always available for cases where the overhead of + vectorization and passing around an arch flag aren't worth it.*/ +static OPUS_INLINE opus_val32 celt_inner_prod_c(const opus_val16 *x, + const opus_val16 *y, int N) +{ + int i; + opus_val32 xy=0; + for (i=0;i<N;i++) + xy = MAC16_16(xy, x[i], y[i]); + return xy; +} + +#if !defined(OVERRIDE_CELT_INNER_PROD) +# define celt_inner_prod(x, y, N, arch) \ + ((void)(arch),celt_inner_prod_c(x, y, N)) +#endif + +#ifdef NON_STATIC_COMB_FILTER_CONST_C +void comb_filter_const_c(opus_val32 *y, opus_val32 *x, int T, int N, + opus_val16 g10, opus_val16 g11, opus_val16 g12); +#endif + + +#ifdef FIXED_POINT +opus_val32 +#else +void +#endif +celt_pitch_xcorr_c(const opus_val16 *_x, const opus_val16 *_y, + opus_val32 *xcorr, int len, int max_pitch); + +#if !defined(OVERRIDE_PITCH_XCORR) +#ifdef FIXED_POINT +opus_val32 +#else +void +#endif +celt_pitch_xcorr(const opus_val16 *_x, const opus_val16 *_y, + opus_val32 *xcorr, int len, int max_pitch, int arch); + +#endif + +#endif |