1 /* Copyright (c) 2007-2008 CSIRO 2 Copyright (c) 2007-2009 Xiph.Org Foundation 3 Written by Jean-Marc Valin */ 4 /** 5 @file pitch.h 6 @brief Pitch analysis 7 */ 8 9 /* 10 Redistribution and use in source and binary forms, with or without 11 modification, are permitted provided that the following conditions 12 are met: 13 14 - Redistributions of source code must retain the above copyright 15 notice, this list of conditions and the following disclaimer. 16 17 - Redistributions in binary form must reproduce the above copyright 18 notice, this list of conditions and the following disclaimer in the 19 documentation and/or other materials provided with the distribution. 20 21 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 25 OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 26 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 28 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 29 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 30 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 31 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #ifndef PITCH_H 35 #define PITCH_H 36 37 #include "modes.h" 38 #include "cpu_support.h" 39 40 #if (defined(OPUS_X86_MAY_HAVE_SSE) && !defined(FIXED_POINT)) \ 41 || ((defined(OPUS_X86_MAY_HAVE_SSE4_1) || defined(OPUS_X86_MAY_HAVE_SSE2)) && defined(FIXED_POINT)) 42 #include "x86/pitch_sse.h" 43 #endif 44 45 #if defined(MIPSr1_ASM) 46 #include "mips/pitch_mipsr1.h" 47 #endif 48 49 #if ((defined(OPUS_ARM_ASM) && defined(FIXED_POINT)) \ 50 || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)) 51 # include "arm/pitch_arm.h" 52 #endif 53 54 void pitch_downsample(celt_sig * OPUS_RESTRICT x[], opus_val16 * OPUS_RESTRICT x_lp, 55 int len, int C, int arch); 56 57 void pitch_search(const opus_val16 * OPUS_RESTRICT x_lp, opus_val16 * OPUS_RESTRICT y, 58 int len, int max_pitch, int *pitch, int arch); 59 60 opus_val16 remove_doubling(opus_val16 *x, int maxperiod, int minperiod, 61 int N, int *T0, int prev_period, opus_val16 prev_gain, int arch); 62 63 64 /* OPT: This is the kernel you really want to optimize. It gets used a lot 65 by the prefilter and by the PLC. */ 66 static OPUS_INLINE void xcorr_kernel_c(const opus_val16 * x, const opus_val16 * y, opus_val32 sum[4], int len) 67 { 68 int j; 69 opus_val16 y_0, y_1, y_2, y_3; 70 celt_assert(len>=3); 71 y_3=0; /* gcc doesn't realize that y_3 can't be used uninitialized */ 72 y_0=*y++; 73 y_1=*y++; 74 y_2=*y++; 75 for (j=0;j<len-3;j+=4) 76 { 77 opus_val16 tmp; 78 tmp = *x++; 79 y_3=*y++; 80 sum[0] = MAC16_16(sum[0],tmp,y_0); 81 sum[1] = MAC16_16(sum[1],tmp,y_1); 82 sum[2] = MAC16_16(sum[2],tmp,y_2); 83 sum[3] = MAC16_16(sum[3],tmp,y_3); 84 tmp=*x++; 85 y_0=*y++; 86 sum[0] = MAC16_16(sum[0],tmp,y_1); 87 sum[1] = MAC16_16(sum[1],tmp,y_2); 88 sum[2] = MAC16_16(sum[2],tmp,y_3); 89 sum[3] = MAC16_16(sum[3],tmp,y_0); 90 tmp=*x++; 91 y_1=*y++; 92 sum[0] = MAC16_16(sum[0],tmp,y_2); 93 sum[1] = MAC16_16(sum[1],tmp,y_3); 94 sum[2] = MAC16_16(sum[2],tmp,y_0); 95 sum[3] = MAC16_16(sum[3],tmp,y_1); 96 tmp=*x++; 97 y_2=*y++; 98 sum[0] = MAC16_16(sum[0],tmp,y_3); 99 sum[1] = MAC16_16(sum[1],tmp,y_0); 100 sum[2] = MAC16_16(sum[2],tmp,y_1); 101 sum[3] = MAC16_16(sum[3],tmp,y_2); 102 } 103 if (j++<len) 104 { 105 opus_val16 tmp = *x++; 106 y_3=*y++; 107 sum[0] = MAC16_16(sum[0],tmp,y_0); 108 sum[1] = MAC16_16(sum[1],tmp,y_1); 109 sum[2] = MAC16_16(sum[2],tmp,y_2); 110 sum[3] = MAC16_16(sum[3],tmp,y_3); 111 } 112 if (j++<len) 113 { 114 opus_val16 tmp=*x++; 115 y_0=*y++; 116 sum[0] = MAC16_16(sum[0],tmp,y_1); 117 sum[1] = MAC16_16(sum[1],tmp,y_2); 118 sum[2] = MAC16_16(sum[2],tmp,y_3); 119 sum[3] = MAC16_16(sum[3],tmp,y_0); 120 } 121 if (j<len) 122 { 123 opus_val16 tmp=*x++; 124 y_1=*y++; 125 sum[0] = MAC16_16(sum[0],tmp,y_2); 126 sum[1] = MAC16_16(sum[1],tmp,y_3); 127 sum[2] = MAC16_16(sum[2],tmp,y_0); 128 sum[3] = MAC16_16(sum[3],tmp,y_1); 129 } 130 } 131 132 #ifndef OVERRIDE_XCORR_KERNEL 133 #define xcorr_kernel(x, y, sum, len, arch) \ 134 ((void)(arch),xcorr_kernel_c(x, y, sum, len)) 135 #endif /* OVERRIDE_XCORR_KERNEL */ 136 137 138 static OPUS_INLINE void dual_inner_prod_c(const opus_val16 *x, const opus_val16 *y01, const opus_val16 *y02, 139 int N, opus_val32 *xy1, opus_val32 *xy2) 140 { 141 int i; 142 opus_val32 xy01=0; 143 opus_val32 xy02=0; 144 for (i=0;i<N;i++) 145 { 146 xy01 = MAC16_16(xy01, x[i], y01[i]); 147 xy02 = MAC16_16(xy02, x[i], y02[i]); 148 } 149 *xy1 = xy01; 150 *xy2 = xy02; 151 } 152 153 #ifndef OVERRIDE_DUAL_INNER_PROD 154 # define dual_inner_prod(x, y01, y02, N, xy1, xy2, arch) \ 155 ((void)(arch),dual_inner_prod_c(x, y01, y02, N, xy1, xy2)) 156 #endif 157 158 /*We make sure a C version is always available for cases where the overhead of 159 vectorization and passing around an arch flag aren't worth it.*/ 160 static OPUS_INLINE opus_val32 celt_inner_prod_c(const opus_val16 *x, 161 const opus_val16 *y, int N) 162 { 163 int i; 164 opus_val32 xy=0; 165 for (i=0;i<N;i++) 166 xy = MAC16_16(xy, x[i], y[i]); 167 return xy; 168 } 169 170 #if !defined(OVERRIDE_CELT_INNER_PROD) 171 # define celt_inner_prod(x, y, N, arch) \ 172 ((void)(arch),celt_inner_prod_c(x, y, N)) 173 #endif 174 175 #ifdef NON_STATIC_COMB_FILTER_CONST_C 176 void comb_filter_const_c(opus_val32 *y, opus_val32 *x, int T, int N, 177 opus_val16 g10, opus_val16 g11, opus_val16 g12); 178 #endif 179 180 181 #ifdef FIXED_POINT 182 opus_val32 183 #else 184 void 185 #endif 186 celt_pitch_xcorr_c(const opus_val16 *_x, const opus_val16 *_y, 187 opus_val32 *xcorr, int len, int max_pitch); 188 189 #if !defined(OVERRIDE_PITCH_XCORR) 190 #ifdef FIXED_POINT 191 opus_val32 192 #else 193 void 194 #endif 195 celt_pitch_xcorr(const opus_val16 *_x, const opus_val16 *_y, 196 opus_val32 *xcorr, int len, int max_pitch, int arch); 197 198 #endif 199 200 #endif 201
