2 * MMX optimized FLAC DSP utils
3 * Copyright (c) 2007 Loren Merritt
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "dsputil_mmx.h"
24 static void apply_welch_window_sse2(const int32_t *data, int len, double *w_data)
26 double c = 2.0 / (len-1.0);
28 long i = -n2*sizeof(int32_t);
29 long j = n2*sizeof(int32_t);
31 "movsd %0, %%xmm7 \n\t"
32 "movapd %1, %%xmm6 \n\t"
33 "movapd %2, %%xmm5 \n\t"
34 "movlhps %%xmm7, %%xmm7 \n\t"
35 "subpd %%xmm5, %%xmm7 \n\t"
36 "addsd %%xmm6, %%xmm7 \n\t"
37 ::"m"(c), "m"(*ff_pd_1), "m"(*ff_pd_2)
42 "movapd %%xmm7, %%xmm1 \n\t"\
43 "mulpd %%xmm1, %%xmm1 \n\t"\
44 "movapd %%xmm6, %%xmm0 \n\t"\
45 "subpd %%xmm1, %%xmm0 \n\t"\
46 "pshufd $0x4e, %%xmm0, %%xmm1 \n\t"\
47 "cvtpi2pd (%4,%0), %%xmm2 \n\t"\
48 "cvtpi2pd (%5,%1), %%xmm3 \n\t"\
49 "mulpd %%xmm0, %%xmm2 \n\t"\
50 "mulpd %%xmm1, %%xmm3 \n\t"\
51 "movapd %%xmm2, (%2,%0,2) \n\t"\
52 MOVPD" %%xmm3, (%3,%1,2) \n\t"\
53 "subpd %%xmm5, %%xmm7 \n\t"\
58 :"r"(w_data+n2), "r"(w_data+len-2-n2),\
59 "r"(data+n2), "r"(data+len-2-n2)\
68 void ff_flac_compute_autocorr_sse2(const int32_t *data, int len, int lag,
71 double tmp[len + lag + 2];
72 double *data1 = tmp + lag;
78 apply_welch_window_sse2(data, len, data1);
84 for(j=0; j<lag; j+=2){
85 long i = -len*sizeof(double);
88 "movsd %6, %%xmm0 \n\t"
89 "movsd %6, %%xmm1 \n\t"
90 "movsd %6, %%xmm2 \n\t"
92 "movapd (%4,%0), %%xmm3 \n\t"
93 "movupd -8(%5,%0), %%xmm4 \n\t"
94 "movapd (%5,%0), %%xmm5 \n\t"
95 "mulpd %%xmm3, %%xmm4 \n\t"
96 "mulpd %%xmm3, %%xmm5 \n\t"
97 "mulpd -16(%5,%0), %%xmm3 \n\t"
98 "addpd %%xmm4, %%xmm1 \n\t"
99 "addpd %%xmm5, %%xmm0 \n\t"
100 "addpd %%xmm3, %%xmm2 \n\t"
103 "movhlps %%xmm0, %%xmm3 \n\t"
104 "movhlps %%xmm1, %%xmm4 \n\t"
105 "movhlps %%xmm2, %%xmm5 \n\t"
106 "addsd %%xmm3, %%xmm0 \n\t"
107 "addsd %%xmm4, %%xmm1 \n\t"
108 "addsd %%xmm5, %%xmm2 \n\t"
109 "movsd %%xmm0, %1 \n\t"
110 "movsd %%xmm1, %2 \n\t"
111 "movsd %%xmm2, %3 \n\t"
112 :"+&r"(i), "=m"(autoc[j]), "=m"(autoc[j+1]), "=m"(autoc[j+2])
113 :"r"(data1+len), "r"(data1+len-j), "m"(*ff_pd_1)
117 "movsd %5, %%xmm0 \n\t"
118 "movsd %5, %%xmm1 \n\t"
120 "movapd (%3,%0), %%xmm3 \n\t"
121 "movupd -8(%4,%0), %%xmm4 \n\t"
122 "mulpd %%xmm3, %%xmm4 \n\t"
123 "mulpd (%4,%0), %%xmm3 \n\t"
124 "addpd %%xmm4, %%xmm1 \n\t"
125 "addpd %%xmm3, %%xmm0 \n\t"
128 "movhlps %%xmm0, %%xmm3 \n\t"
129 "movhlps %%xmm1, %%xmm4 \n\t"
130 "addsd %%xmm3, %%xmm0 \n\t"
131 "addsd %%xmm4, %%xmm1 \n\t"
132 "movsd %%xmm0, %1 \n\t"
133 "movsd %%xmm1, %2 \n\t"
134 :"+&r"(i), "=m"(autoc[j]), "=m"(autoc[j+1])
135 :"r"(data1+len), "r"(data1+len-j), "m"(*ff_pd_1)