1 /*
2 * SIMD-optimized halfpel functions are compiled twice for rnd/no_rnd
3 * Copyright (c) 2000, 2001 Fabrice Bellard
4 * Copyright (c) 2003-2004 Michael Niedermayer <michaelni@gmx.at>
5 *
6 * MMX optimization by Nick Kurshev <nickols_k@mail.ru>
7 * mostly rewritten by Michael Niedermayer <michaelni@gmx.at>
8 * and improved by Zdenek Kabelac <kabi@users.sf.net>
9 *
10 * This file is part of FFmpeg.
11 *
12 * FFmpeg is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU Lesser General Public
14 * License as published by the Free Software Foundation; either
15 * version 2.1 of the License, or (at your option) any later version.
16 *
17 * FFmpeg is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * Lesser General Public License for more details.
21 *
22 * You should have received a copy of the GNU Lesser General Public
23 * License along with FFmpeg; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 */
26
27 #include <stddef.h>
28 #include <stdint.h>
29
30 #include "inline_asm.h"
31
32 // put_pixels
DEF(put,pixels8_xy2)33 STATIC void DEF(put, pixels8_xy2)(uint8_t *block, const uint8_t *pixels,
34 ptrdiff_t line_size, int h)
35 {
36 MOVQ_ZERO(mm7);
37 SET_RND(mm6); // =2 for rnd and =1 for no_rnd version
38 __asm__ volatile(
39 "movq (%1), %%mm0 \n\t"
40 "movq 1(%1), %%mm4 \n\t"
41 "movq %%mm0, %%mm1 \n\t"
42 "movq %%mm4, %%mm5 \n\t"
43 "punpcklbw %%mm7, %%mm0 \n\t"
44 "punpcklbw %%mm7, %%mm4 \n\t"
45 "punpckhbw %%mm7, %%mm1 \n\t"
46 "punpckhbw %%mm7, %%mm5 \n\t"
47 "paddusw %%mm0, %%mm4 \n\t"
48 "paddusw %%mm1, %%mm5 \n\t"
49 "xor %%"REG_a", %%"REG_a" \n\t"
50 "add %3, %1 \n\t"
51 ".p2align 3 \n\t"
52 "1: \n\t"
53 "movq (%1, %%"REG_a"), %%mm0 \n\t"
54 "movq 1(%1, %%"REG_a"), %%mm2 \n\t"
55 "movq %%mm0, %%mm1 \n\t"
56 "movq %%mm2, %%mm3 \n\t"
57 "punpcklbw %%mm7, %%mm0 \n\t"
58 "punpcklbw %%mm7, %%mm2 \n\t"
59 "punpckhbw %%mm7, %%mm1 \n\t"
60 "punpckhbw %%mm7, %%mm3 \n\t"
61 "paddusw %%mm2, %%mm0 \n\t"
62 "paddusw %%mm3, %%mm1 \n\t"
63 "paddusw %%mm6, %%mm4 \n\t"
64 "paddusw %%mm6, %%mm5 \n\t"
65 "paddusw %%mm0, %%mm4 \n\t"
66 "paddusw %%mm1, %%mm5 \n\t"
67 "psrlw $2, %%mm4 \n\t"
68 "psrlw $2, %%mm5 \n\t"
69 "packuswb %%mm5, %%mm4 \n\t"
70 "movq %%mm4, (%2, %%"REG_a") \n\t"
71 "add %3, %%"REG_a" \n\t"
72
73 "movq (%1, %%"REG_a"), %%mm2 \n\t" // 0 <-> 2 1 <-> 3
74 "movq 1(%1, %%"REG_a"), %%mm4 \n\t"
75 "movq %%mm2, %%mm3 \n\t"
76 "movq %%mm4, %%mm5 \n\t"
77 "punpcklbw %%mm7, %%mm2 \n\t"
78 "punpcklbw %%mm7, %%mm4 \n\t"
79 "punpckhbw %%mm7, %%mm3 \n\t"
80 "punpckhbw %%mm7, %%mm5 \n\t"
81 "paddusw %%mm2, %%mm4 \n\t"
82 "paddusw %%mm3, %%mm5 \n\t"
83 "paddusw %%mm6, %%mm0 \n\t"
84 "paddusw %%mm6, %%mm1 \n\t"
85 "paddusw %%mm4, %%mm0 \n\t"
86 "paddusw %%mm5, %%mm1 \n\t"
87 "psrlw $2, %%mm0 \n\t"
88 "psrlw $2, %%mm1 \n\t"
89 "packuswb %%mm1, %%mm0 \n\t"
90 "movq %%mm0, (%2, %%"REG_a") \n\t"
91 "add %3, %%"REG_a" \n\t"
92
93 "subl $2, %0 \n\t"
94 "jnz 1b \n\t"
95 :"+g"(h), "+S"(pixels)
96 :"D"(block), "r"((x86_reg)line_size)
97 :REG_a, "memory");
98 }
99
100 // avg_pixels
101 // this routine is 'slightly' suboptimal but mostly unused
DEF(avg,pixels8_xy2)102 STATIC void DEF(avg, pixels8_xy2)(uint8_t *block, const uint8_t *pixels,
103 ptrdiff_t line_size, int h)
104 {
105 MOVQ_ZERO(mm7);
106 SET_RND(mm6); // =2 for rnd and =1 for no_rnd version
107 __asm__ volatile(
108 "movq (%1), %%mm0 \n\t"
109 "movq 1(%1), %%mm4 \n\t"
110 "movq %%mm0, %%mm1 \n\t"
111 "movq %%mm4, %%mm5 \n\t"
112 "punpcklbw %%mm7, %%mm0 \n\t"
113 "punpcklbw %%mm7, %%mm4 \n\t"
114 "punpckhbw %%mm7, %%mm1 \n\t"
115 "punpckhbw %%mm7, %%mm5 \n\t"
116 "paddusw %%mm0, %%mm4 \n\t"
117 "paddusw %%mm1, %%mm5 \n\t"
118 "xor %%"REG_a", %%"REG_a" \n\t"
119 "add %3, %1 \n\t"
120 ".p2align 3 \n\t"
121 "1: \n\t"
122 "movq (%1, %%"REG_a"), %%mm0 \n\t"
123 "movq 1(%1, %%"REG_a"), %%mm2 \n\t"
124 "movq %%mm0, %%mm1 \n\t"
125 "movq %%mm2, %%mm3 \n\t"
126 "punpcklbw %%mm7, %%mm0 \n\t"
127 "punpcklbw %%mm7, %%mm2 \n\t"
128 "punpckhbw %%mm7, %%mm1 \n\t"
129 "punpckhbw %%mm7, %%mm3 \n\t"
130 "paddusw %%mm2, %%mm0 \n\t"
131 "paddusw %%mm3, %%mm1 \n\t"
132 "paddusw %%mm6, %%mm4 \n\t"
133 "paddusw %%mm6, %%mm5 \n\t"
134 "paddusw %%mm0, %%mm4 \n\t"
135 "paddusw %%mm1, %%mm5 \n\t"
136 "psrlw $2, %%mm4 \n\t"
137 "psrlw $2, %%mm5 \n\t"
138 "movq (%2, %%"REG_a"), %%mm3 \n\t"
139 "packuswb %%mm5, %%mm4 \n\t"
140 "pcmpeqd %%mm2, %%mm2 \n\t"
141 "paddb %%mm2, %%mm2 \n\t"
142 PAVGB_MMX(%%mm3, %%mm4, %%mm5, %%mm2)
143 "movq %%mm5, (%2, %%"REG_a") \n\t"
144 "add %3, %%"REG_a" \n\t"
145
146 "movq (%1, %%"REG_a"), %%mm2 \n\t" // 0 <-> 2 1 <-> 3
147 "movq 1(%1, %%"REG_a"), %%mm4 \n\t"
148 "movq %%mm2, %%mm3 \n\t"
149 "movq %%mm4, %%mm5 \n\t"
150 "punpcklbw %%mm7, %%mm2 \n\t"
151 "punpcklbw %%mm7, %%mm4 \n\t"
152 "punpckhbw %%mm7, %%mm3 \n\t"
153 "punpckhbw %%mm7, %%mm5 \n\t"
154 "paddusw %%mm2, %%mm4 \n\t"
155 "paddusw %%mm3, %%mm5 \n\t"
156 "paddusw %%mm6, %%mm0 \n\t"
157 "paddusw %%mm6, %%mm1 \n\t"
158 "paddusw %%mm4, %%mm0 \n\t"
159 "paddusw %%mm5, %%mm1 \n\t"
160 "psrlw $2, %%mm0 \n\t"
161 "psrlw $2, %%mm1 \n\t"
162 "movq (%2, %%"REG_a"), %%mm3 \n\t"
163 "packuswb %%mm1, %%mm0 \n\t"
164 "pcmpeqd %%mm2, %%mm2 \n\t"
165 "paddb %%mm2, %%mm2 \n\t"
166 PAVGB_MMX(%%mm3, %%mm0, %%mm1, %%mm2)
167 "movq %%mm1, (%2, %%"REG_a") \n\t"
168 "add %3, %%"REG_a" \n\t"
169
170 "subl $2, %0 \n\t"
171 "jnz 1b \n\t"
172 :"+g"(h), "+S"(pixels)
173 :"D"(block), "r"((x86_reg)line_size)
174 :REG_a, "memory");
175 }
176