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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6147 | serge | 1 | /* |
| 2 | * Copyright (c) 2002 Michael Niedermayer |
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| 3 | * Copyright (c) 2013 Paul B Mahol |
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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/x86/cpu.h" |
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| 24 | #include "libavutil/x86/asm.h" |
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| 25 | #include "libavfilter/vf_noise.h" |
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| 26 | |||
| 27 | #if HAVE_INLINE_ASM |
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| 28 | static void line_noise_mmx(uint8_t *dst, const uint8_t *src, |
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| 29 | const int8_t *noise, int len, int shift) |
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| 30 | { |
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| 31 | x86_reg mmx_len= len & (~7); |
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| 32 | noise += shift; |
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| 33 | |||
| 34 | __asm__ volatile( |
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| 35 | "mov %3, %%"REG_a" \n\t" |
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| 36 | "pcmpeqb %%mm7, %%mm7 \n\t" |
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| 37 | "psllw $15, %%mm7 \n\t" |
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| 38 | "packsswb %%mm7, %%mm7 \n\t" |
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| 39 | ".p2align 4 \n\t" |
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| 40 | "1: \n\t" |
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| 41 | "movq (%0, %%"REG_a"), %%mm0 \n\t" |
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| 42 | "movq (%1, %%"REG_a"), %%mm1 \n\t" |
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| 43 | "pxor %%mm7, %%mm0 \n\t" |
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| 44 | "paddsb %%mm1, %%mm0 \n\t" |
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| 45 | "pxor %%mm7, %%mm0 \n\t" |
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| 46 | "movq %%mm0, (%2, %%"REG_a") \n\t" |
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| 47 | "add $8, %%"REG_a" \n\t" |
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| 48 | " js 1b \n\t" |
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| 49 | :: "r" (src+mmx_len), "r" (noise+mmx_len), "r" (dst+mmx_len), "g" (-mmx_len) |
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| 50 | : "%"REG_a |
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| 51 | ); |
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| 52 | if (mmx_len != len) |
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| 53 | ff_line_noise_c(dst+mmx_len, src+mmx_len, noise+mmx_len, len-mmx_len, 0); |
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| 54 | } |
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| 55 | |||
| 56 | #if HAVE_6REGS |
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| 57 | static void line_noise_avg_mmx(uint8_t *dst, const uint8_t *src, |
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| 58 | int len, const int8_t * const *shift) |
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| 59 | { |
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| 60 | x86_reg mmx_len = len & (~7); |
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| 61 | |||
| 62 | __asm__ volatile( |
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| 63 | "mov %5, %%"REG_a" \n\t" |
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| 64 | ".p2align 4 \n\t" |
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| 65 | "1: \n\t" |
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| 66 | "movq (%1, %%"REG_a"), %%mm1 \n\t" |
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| 67 | "movq (%0, %%"REG_a"), %%mm0 \n\t" |
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| 68 | "paddb (%2, %%"REG_a"), %%mm1 \n\t" |
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| 69 | "paddb (%3, %%"REG_a"), %%mm1 \n\t" |
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| 70 | "movq %%mm0, %%mm2 \n\t" |
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| 71 | "movq %%mm1, %%mm3 \n\t" |
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| 72 | "punpcklbw %%mm0, %%mm0 \n\t" |
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| 73 | "punpckhbw %%mm2, %%mm2 \n\t" |
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| 74 | "punpcklbw %%mm1, %%mm1 \n\t" |
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| 75 | "punpckhbw %%mm3, %%mm3 \n\t" |
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| 76 | "pmulhw %%mm0, %%mm1 \n\t" |
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| 77 | "pmulhw %%mm2, %%mm3 \n\t" |
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| 78 | "paddw %%mm1, %%mm1 \n\t" |
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| 79 | "paddw %%mm3, %%mm3 \n\t" |
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| 80 | "paddw %%mm0, %%mm1 \n\t" |
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| 81 | "paddw %%mm2, %%mm3 \n\t" |
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| 82 | "psrlw $8, %%mm1 \n\t" |
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| 83 | "psrlw $8, %%mm3 \n\t" |
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| 84 | "packuswb %%mm3, %%mm1 \n\t" |
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| 85 | "movq %%mm1, (%4, %%"REG_a") \n\t" |
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| 86 | "add $8, %%"REG_a" \n\t" |
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| 87 | " js 1b \n\t" |
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| 88 | :: "r" (src+mmx_len), "r" (shift[0]+mmx_len), "r" (shift[1]+mmx_len), "r" (shift[2]+mmx_len), |
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| 89 | "r" (dst+mmx_len), "g" (-mmx_len) |
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| 90 | : "%"REG_a |
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| 91 | ); |
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| 92 | |||
| 93 | if (mmx_len != len){ |
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| 94 | const int8_t *shift2[3] = { shift[0]+mmx_len, shift[1]+mmx_len, shift[2]+mmx_len }; |
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| 95 | ff_line_noise_avg_c(dst+mmx_len, src+mmx_len, len-mmx_len, shift2); |
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| 96 | } |
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| 97 | } |
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| 98 | #endif /* HAVE_6REGS */ |
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| 99 | |||
| 100 | static void line_noise_mmxext(uint8_t *dst, const uint8_t *src, |
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| 101 | const int8_t *noise, int len, int shift) |
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| 102 | { |
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| 103 | x86_reg mmx_len = len & (~7); |
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| 104 | noise += shift; |
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| 105 | |||
| 106 | __asm__ volatile( |
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| 107 | "mov %3, %%"REG_a" \n\t" |
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| 108 | "pcmpeqb %%mm7, %%mm7 \n\t" |
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| 109 | "psllw $15, %%mm7 \n\t" |
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| 110 | "packsswb %%mm7, %%mm7 \n\t" |
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| 111 | ".p2align 4 \n\t" |
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| 112 | "1: \n\t" |
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| 113 | "movq (%0, %%"REG_a"), %%mm0 \n\t" |
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| 114 | "movq (%1, %%"REG_a"), %%mm1 \n\t" |
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| 115 | "pxor %%mm7, %%mm0 \n\t" |
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| 116 | "paddsb %%mm1, %%mm0 \n\t" |
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| 117 | "pxor %%mm7, %%mm0 \n\t" |
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| 118 | "movntq %%mm0, (%2, %%"REG_a") \n\t" |
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| 119 | "add $8, %%"REG_a" \n\t" |
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| 120 | " js 1b \n\t" |
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| 121 | :: "r" (src+mmx_len), "r" (noise+mmx_len), "r" (dst+mmx_len), "g" (-mmx_len) |
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| 122 | : "%"REG_a |
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| 123 | ); |
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| 124 | if (mmx_len != len) |
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| 125 | ff_line_noise_c(dst+mmx_len, src+mmx_len, noise+mmx_len, len-mmx_len, 0); |
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| 126 | } |
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| 127 | #endif /* HAVE_INLINE_ASM */ |
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| 128 | |||
| 129 | av_cold void ff_noise_init_x86(NoiseContext *n) |
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| 130 | { |
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| 131 | #if HAVE_INLINE_ASM |
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| 132 | int cpu_flags = av_get_cpu_flags(); |
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| 133 | |||
| 134 | if (INLINE_MMX(cpu_flags)) { |
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| 135 | n->line_noise = line_noise_mmx; |
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| 136 | #if HAVE_6REGS |
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| 137 | n->line_noise_avg = line_noise_avg_mmx; |
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| 138 | #endif |
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| 139 | } |
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| 140 | if (INLINE_MMXEXT(cpu_flags)) { |
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| 141 | n->line_noise = line_noise_mmxext; |
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| 142 | } |
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| 143 | #endif |
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| 144 | } |