FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/x86/vf_noise.c
Date: 2022-12-09 07:38:14
Exec Total Coverage
Lines: 0 21 0.0%
Functions: 0 3 0.0%
Branches: 0 8 0.0%

Line Branch Exec Source
1 /*
2 * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
3 * Copyright (c) 2013 Paul B Mahol
4 *
5 * This file is part of FFmpeg.
6 *
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.
11 *
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.
16 *
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
20 */
21
22 #include "libavutil/attributes.h"
23 #include "libavutil/x86/cpu.h"
24 #include "libavutil/x86/asm.h"
25 #include "libavfilter/vf_noise.h"
26
27 #if HAVE_INLINE_ASM
28 #if HAVE_6REGS
29 static void line_noise_avg_mmx(uint8_t *dst, const uint8_t *src,
30 int len, const int8_t * const *shift)
31 {
32 x86_reg mmx_len = len & (~7);
33
34 __asm__ volatile(
35 "mov %5, %%"FF_REG_a" \n\t"
36 ".p2align 4 \n\t"
37 "1: \n\t"
38 "movq (%1, %%"FF_REG_a"), %%mm1 \n\t"
39 "movq (%0, %%"FF_REG_a"), %%mm0 \n\t"
40 "paddb (%2, %%"FF_REG_a"), %%mm1\n\t"
41 "paddb (%3, %%"FF_REG_a"), %%mm1\n\t"
42 "movq %%mm0, %%mm2 \n\t"
43 "movq %%mm1, %%mm3 \n\t"
44 "punpcklbw %%mm0, %%mm0 \n\t"
45 "punpckhbw %%mm2, %%mm2 \n\t"
46 "punpcklbw %%mm1, %%mm1 \n\t"
47 "punpckhbw %%mm3, %%mm3 \n\t"
48 "pmulhw %%mm0, %%mm1 \n\t"
49 "pmulhw %%mm2, %%mm3 \n\t"
50 "paddw %%mm1, %%mm1 \n\t"
51 "paddw %%mm3, %%mm3 \n\t"
52 "paddw %%mm0, %%mm1 \n\t"
53 "paddw %%mm2, %%mm3 \n\t"
54 "psrlw $8, %%mm1 \n\t"
55 "psrlw $8, %%mm3 \n\t"
56 "packuswb %%mm3, %%mm1 \n\t"
57 "movq %%mm1, (%4, %%"FF_REG_a") \n\t"
58 "add $8, %%"FF_REG_a" \n\t"
59 " js 1b \n\t"
60 :: "r" (src+mmx_len), "r" (shift[0]+mmx_len), "r" (shift[1]+mmx_len), "r" (shift[2]+mmx_len),
61 "r" (dst+mmx_len), "g" (-mmx_len)
62 : "%"FF_REG_a
63 );
64
65 if (mmx_len != len){
66 const int8_t *shift2[3] = { shift[0]+mmx_len, shift[1]+mmx_len, shift[2]+mmx_len };
67 ff_line_noise_avg_c(dst+mmx_len, src+mmx_len, len-mmx_len, shift2);
68 }
69 }
70 #endif /* HAVE_6REGS */
71
72 static void line_noise_mmxext(uint8_t *dst, const uint8_t *src,
73 const int8_t *noise, int len, int shift)
74 {
75 x86_reg mmx_len = len & (~7);
76 noise += shift;
77
78 __asm__ volatile(
79 "mov %3, %%"FF_REG_a" \n\t"
80 "pcmpeqb %%mm7, %%mm7 \n\t"
81 "psllw $15, %%mm7 \n\t"
82 "packsswb %%mm7, %%mm7 \n\t"
83 ".p2align 4 \n\t"
84 "1: \n\t"
85 "movq (%0, %%"FF_REG_a"), %%mm0 \n\t"
86 "movq (%1, %%"FF_REG_a"), %%mm1 \n\t"
87 "pxor %%mm7, %%mm0 \n\t"
88 "paddsb %%mm1, %%mm0 \n\t"
89 "pxor %%mm7, %%mm0 \n\t"
90 "movntq %%mm0, (%2, %%"FF_REG_a") \n\t"
91 "add $8, %%"FF_REG_a" \n\t"
92 " js 1b \n\t"
93 :: "r" (src+mmx_len), "r" (noise+mmx_len), "r" (dst+mmx_len), "g" (-mmx_len)
94 : "%"FF_REG_a
95 );
96 if (mmx_len != len)
97 ff_line_noise_c(dst+mmx_len, src+mmx_len, noise+mmx_len, len-mmx_len, 0);
98 }
99 #endif /* HAVE_INLINE_ASM */
100
101 av_cold void ff_noise_init_x86(NoiseContext *n)
102 {
103 #if HAVE_INLINE_ASM
104 int cpu_flags = av_get_cpu_flags();
105
106 if (INLINE_MMX(cpu_flags)) {
107 #if HAVE_6REGS
108 n->line_noise_avg = line_noise_avg_mmx;
109 #endif
110 }
111 if (INLINE_MMXEXT(cpu_flags)) {
112 n->line_noise = line_noise_mmxext;
113 }
114 #endif
115 }
116