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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * MMX optimized LPC DSP utils |
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| 3 | * Copyright (c) 2007 Loren Merritt |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |||
| 22 | #include "libavutil/attributes.h" |
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| 23 | #include "libavutil/cpu.h" |
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| 24 | #include "libavutil/mem.h" |
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| 25 | #include "libavutil/x86/asm.h" |
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| 26 | #include "libavutil/x86/cpu.h" |
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| 27 | #include "libavcodec/lpc.h" |
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| 28 | |||
| 29 | DECLARE_ASM_CONST(16, double, pd_1)[2] = { 1.0, 1.0 }; |
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| 30 | DECLARE_ASM_CONST(16, double, pd_2)[2] = { 2.0, 2.0 }; |
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| 31 | |||
| 32 | #if HAVE_SSE2_INLINE |
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| 33 | |||
| 34 | static void lpc_apply_welch_window_sse2(const int32_t *data, int len, |
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| 35 | double *w_data) |
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| 36 | { |
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| 37 | double c = 2.0 / (len-1.0); |
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| 38 | int n2 = len>>1; |
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| 39 | x86_reg i = -n2*sizeof(int32_t); |
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| 40 | x86_reg j = n2*sizeof(int32_t); |
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| 41 | __asm__ volatile( |
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| 42 | "movsd %4, %%xmm7 \n\t" |
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| 43 | "movapd "MANGLE(pd_1)", %%xmm6 \n\t" |
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| 44 | "movapd "MANGLE(pd_2)", %%xmm5 \n\t" |
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| 45 | "movlhps %%xmm7, %%xmm7 \n\t" |
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| 46 | "subpd %%xmm5, %%xmm7 \n\t" |
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| 47 | "addsd %%xmm6, %%xmm7 \n\t" |
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| 48 | "test $1, %5 \n\t" |
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| 49 | "jz 2f \n\t" |
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| 50 | #define WELCH(MOVPD, offset)\ |
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| 51 | "1: \n\t"\ |
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| 52 | "movapd %%xmm7, %%xmm1 \n\t"\ |
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| 53 | "mulpd %%xmm1, %%xmm1 \n\t"\ |
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| 54 | "movapd %%xmm6, %%xmm0 \n\t"\ |
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| 55 | "subpd %%xmm1, %%xmm0 \n\t"\ |
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| 56 | "pshufd $0x4e, %%xmm0, %%xmm1 \n\t"\ |
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| 57 | "cvtpi2pd (%3,%0), %%xmm2 \n\t"\ |
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| 58 | "cvtpi2pd "#offset"*4(%3,%1), %%xmm3 \n\t"\ |
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| 59 | "mulpd %%xmm0, %%xmm2 \n\t"\ |
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| 60 | "mulpd %%xmm1, %%xmm3 \n\t"\ |
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| 61 | "movapd %%xmm2, (%2,%0,2) \n\t"\ |
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| 62 | MOVPD" %%xmm3, "#offset"*8(%2,%1,2) \n\t"\ |
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| 63 | "subpd %%xmm5, %%xmm7 \n\t"\ |
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| 64 | "sub $8, %1 \n\t"\ |
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| 65 | "add $8, %0 \n\t"\ |
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| 66 | "jl 1b \n\t"\ |
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| 67 | |||
| 68 | WELCH("movupd", -1) |
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| 69 | "jmp 3f \n\t" |
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| 70 | "2: \n\t" |
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| 71 | WELCH("movapd", -2) |
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| 72 | "3: \n\t" |
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| 73 | :"+&r"(i), "+&r"(j) |
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| 74 | :"r"(w_data+n2), "r"(data+n2), "m"(c), "r"(len) |
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| 75 | XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3", |
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| 76 | "%xmm5", "%xmm6", "%xmm7") |
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| 77 | ); |
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| 78 | #undef WELCH |
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| 79 | } |
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| 80 | |||
| 81 | static void lpc_compute_autocorr_sse2(const double *data, int len, int lag, |
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| 82 | double *autoc) |
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| 83 | { |
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| 84 | int j; |
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| 85 | |||
| 86 | if((x86_reg)data & 15) |
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| 87 | data++; |
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| 88 | |||
| 89 | for(j=0; j |
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| 90 | x86_reg i = -len*sizeof(double); |
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| 91 | if(j == lag-2) { |
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| 92 | __asm__ volatile( |
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| 93 | "movsd "MANGLE(pd_1)", %%xmm0 \n\t" |
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| 94 | "movsd "MANGLE(pd_1)", %%xmm1 \n\t" |
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| 95 | "movsd "MANGLE(pd_1)", %%xmm2 \n\t" |
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| 96 | "1: \n\t" |
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| 97 | "movapd (%2,%0), %%xmm3 \n\t" |
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| 98 | "movupd -8(%3,%0), %%xmm4 \n\t" |
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| 99 | "movapd (%3,%0), %%xmm5 \n\t" |
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| 100 | "mulpd %%xmm3, %%xmm4 \n\t" |
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| 101 | "mulpd %%xmm3, %%xmm5 \n\t" |
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| 102 | "mulpd -16(%3,%0), %%xmm3 \n\t" |
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| 103 | "addpd %%xmm4, %%xmm1 \n\t" |
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| 104 | "addpd %%xmm5, %%xmm0 \n\t" |
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| 105 | "addpd %%xmm3, %%xmm2 \n\t" |
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| 106 | "add $16, %0 \n\t" |
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| 107 | "jl 1b \n\t" |
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| 108 | "movhlps %%xmm0, %%xmm3 \n\t" |
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| 109 | "movhlps %%xmm1, %%xmm4 \n\t" |
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| 110 | "movhlps %%xmm2, %%xmm5 \n\t" |
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| 111 | "addsd %%xmm3, %%xmm0 \n\t" |
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| 112 | "addsd %%xmm4, %%xmm1 \n\t" |
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| 113 | "addsd %%xmm5, %%xmm2 \n\t" |
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| 114 | "movsd %%xmm0, (%1) \n\t" |
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| 115 | "movsd %%xmm1, 8(%1) \n\t" |
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| 116 | "movsd %%xmm2, 16(%1) \n\t" |
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| 117 | :"+&r"(i) |
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| 118 | :"r"(autoc+j), "r"(data+len), "r"(data+len-j) |
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| 119 | :"memory" |
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| 120 | ); |
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| 121 | } else { |
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| 122 | __asm__ volatile( |
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| 123 | "movsd "MANGLE(pd_1)", %%xmm0 \n\t" |
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| 124 | "movsd "MANGLE(pd_1)", %%xmm1 \n\t" |
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| 125 | "1: \n\t" |
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| 126 | "movapd (%3,%0), %%xmm3 \n\t" |
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| 127 | "movupd -8(%4,%0), %%xmm4 \n\t" |
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| 128 | "mulpd %%xmm3, %%xmm4 \n\t" |
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| 129 | "mulpd (%4,%0), %%xmm3 \n\t" |
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| 130 | "addpd %%xmm4, %%xmm1 \n\t" |
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| 131 | "addpd %%xmm3, %%xmm0 \n\t" |
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| 132 | "add $16, %0 \n\t" |
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| 133 | "jl 1b \n\t" |
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| 134 | "movhlps %%xmm0, %%xmm3 \n\t" |
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| 135 | "movhlps %%xmm1, %%xmm4 \n\t" |
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| 136 | "addsd %%xmm3, %%xmm0 \n\t" |
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| 137 | "addsd %%xmm4, %%xmm1 \n\t" |
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| 138 | "movsd %%xmm0, %1 \n\t" |
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| 139 | "movsd %%xmm1, %2 \n\t" |
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| 140 | :"+&r"(i), "=m"(autoc[j]), "=m"(autoc[j+1]) |
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| 141 | :"r"(data+len), "r"(data+len-j) |
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| 142 | ); |
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| 143 | } |
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| 144 | } |
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| 145 | } |
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| 146 | |||
| 147 | #endif /* HAVE_SSE2_INLINE */ |
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| 148 | |||
| 149 | av_cold void ff_lpc_init_x86(LPCContext *c) |
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| 150 | { |
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| 151 | #if HAVE_SSE2_INLINE |
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| 152 | int cpu_flags = av_get_cpu_flags(); |
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| 153 | |||
| 154 | if (HAVE_SSE2_INLINE && cpu_flags & (AV_CPU_FLAG_SSE2 | AV_CPU_FLAG_SSE2SLOW)) { |
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| 155 | c->lpc_apply_welch_window = lpc_apply_welch_window_sse2; |
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| 156 | c->lpc_compute_autocorr = lpc_compute_autocorr_sse2; |
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| 157 | } |
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| 158 | #endif /* HAVE_SSE2_INLINE */ |
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| 159 | } |