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(OPUS_ARM_MAY_HAVE_NEON_INTR)) 50 # include "arm/pitch_arm.h" 51 #endif 52 53 void pitch_downsample(celt_sig * OPUS_RESTRICT x[], opus_val16 * OPUS_RESTRICT x_lp, 54 int len, int C, int arch); 55 56 void pitch_search(const opus_val16 * OPUS_RESTRICT x_lp, opus_val16 * OPUS_RESTRICT y, 57 int len, int max_pitch, int *pitch, int arch); 58 59 opus_val16 remove_doubling(opus_val16 *x, int maxperiod, int minperiod, 60 int N, int *T0, int prev_period, opus_val16 prev_gain, int arch); 61 62 63 /* OPT: This is the kernel you really want to optimize. It gets used a lot 64 by the prefilter and by the PLC. */ 65 static OPUS_INLINE void xcorr_kernel_c(const opus_val16 * x, const opus_val16 * y, opus_val32 sum[4], int len) 66 { 67 int j; 68 opus_val16 y_0, y_1, y_2, y_3; 69 celt_assert(len>=3); 70 y_3=0; /* gcc doesn't realize that y_3 can't be used uninitialized */ 71 y_0=*y++; 72 y_1=*y++; 73 y_2=*y++; 74 for (j=0;j<len-3;j+=4) 75 { 76 opus_val16 tmp; 77 tmp = *x++; 78 y_3=*y++; 79 sum[0] = MAC16_16(sum[0],tmp,y_0); 80 sum[1] = MAC16_16(sum[1],tmp,y_1); 81 sum[2] = MAC16_16(sum[2],tmp,y_2); 82 sum[3] = MAC16_16(sum[3],tmp,y_3); 83 tmp=*x++; 84 y_0=*y++; 85 sum[0] = MAC16_16(sum[0],tmp,y_1); 86 sum[1] = MAC16_16(sum[1],tmp,y_2); 87 sum[2] = MAC16_16(sum[2],tmp,y_3); 88 sum[3] = MAC16_16(sum[3],tmp,y_0); 89 tmp=*x++; 90 y_1=*y++; 91 sum[0] = MAC16_16(sum[0],tmp,y_2); 92 sum[1] = MAC16_16(sum[1],tmp,y_3); 93 sum[2] = MAC16_16(sum[2],tmp,y_0); 94 sum[3] = MAC16_16(sum[3],tmp,y_1); 95 tmp=*x++; 96 y_2=*y++; 97 sum[0] = MAC16_16(sum[0],tmp,y_3); 98 sum[1] = MAC16_16(sum[1],tmp,y_0); 99 sum[2] = MAC16_16(sum[2],tmp,y_1); 100 sum[3] = MAC16_16(sum[3],tmp,y_2); 101 } 102 if (j++<len) 103 { 104 opus_val16 tmp = *x++; 105 y_3=*y++; 106 sum[0] = MAC16_16(sum[0],tmp,y_0); 107 sum[1] = MAC16_16(sum[1],tmp,y_1); 108 sum[2] = MAC16_16(sum[2],tmp,y_2); 109 sum[3] = MAC16_16(sum[3],tmp,y_3); 110 } 111 if (j++<len) 112 { 113 opus_val16 tmp=*x++; 114 y_0=*y++; 115 sum[0] = MAC16_16(sum[0],tmp,y_1); 116 sum[1] = MAC16_16(sum[1],tmp,y_2); 117 sum[2] = MAC16_16(sum[2],tmp,y_3); 118 sum[3] = MAC16_16(sum[3],tmp,y_0); 119 } 120 if (j<len) 121 { 122 opus_val16 tmp=*x++; 123 y_1=*y++; 124 sum[0] = MAC16_16(sum[0],tmp,y_2); 125 sum[1] = MAC16_16(sum[1],tmp,y_3); 126 sum[2] = MAC16_16(sum[2],tmp,y_0); 127 sum[3] = MAC16_16(sum[3],tmp,y_1); 128 } 129 } 130 131 #ifndef OVERRIDE_XCORR_KERNEL 132 #define xcorr_kernel(x, y, sum, len, arch) \ 133 ((void)(arch),xcorr_kernel_c(x, y, sum, len)) 134 #endif /* OVERRIDE_XCORR_KERNEL */ 135 136 137 static OPUS_INLINE void dual_inner_prod_c(const opus_val16 *x, const opus_val16 *y01, const opus_val16 *y02, 138 int N, opus_val32 *xy1, opus_val32 *xy2) 139 { 140 int i; 141 opus_val32 xy01=0; 142 opus_val32 xy02=0; 143 for (i=0;i<N;i++) 144 { 145 xy01 = MAC16_16(xy01, x[i], y01[i]); 146 xy02 = MAC16_16(xy02, x[i], y02[i]); 147 } 148 *xy1 = xy01; 149 *xy2 = xy02; 150 } 151 152 #ifndef OVERRIDE_DUAL_INNER_PROD 153 # define dual_inner_prod(x, y01, y02, N, xy1, xy2, arch) \ 154 ((void)(arch),dual_inner_prod_c(x, y01, y02, N, xy1, xy2)) 155 #endif 156 157 /*We make sure a C version is always available for cases where the overhead of 158 vectorization and passing around an arch flag aren't worth it.*/ 159 static OPUS_INLINE opus_val32 celt_inner_prod_c(const opus_val16 *x, 160 const opus_val16 *y, int N) 161 { 162 int i; 163 opus_val32 xy=0; 164 for (i=0;i<N;i++) 165 xy = MAC16_16(xy, x[i], y[i]); 166 return xy; 167 } 168 169 #if !defined(OVERRIDE_CELT_INNER_PROD) 170 # define celt_inner_prod(x, y, N, arch) \ 171 ((void)(arch),celt_inner_prod_c(x, y, N)) 172 #endif 173 174 #ifdef NON_STATIC_COMB_FILTER_CONST_C 175 void comb_filter_const_c(opus_val32 *y, opus_val32 *x, int T, int N, 176 opus_val16 g10, opus_val16 g11, opus_val16 g12); 177 #endif 178 179 180 #ifdef FIXED_POINT 181 opus_val32 182 #else 183 void 184 #endif 185 celt_pitch_xcorr_c(const opus_val16 *_x, const opus_val16 *_y, 186 opus_val32 *xcorr, int len, int max_pitch, int arch); 187 188 #ifndef OVERRIDE_PITCH_XCORR 189 # define celt_pitch_xcorr celt_pitch_xcorr_c 190 #endif 191 192 #endif 193
