videodsp_init.c (9991B)
1 /* 2 * Copyright (C) 2002-2012 Michael Niedermayer 3 * Copyright (C) 2012 Ronald S. Bultje 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 "config.h" 23 #include "libavutil/attributes.h" 24 #include "libavutil/avassert.h" 25 #include "libavutil/common.h" 26 #include "libavutil/cpu.h" 27 #include "libavutil/x86/asm.h" 28 #include "libavutil/x86/cpu.h" 29 #include "libavcodec/videodsp.h" 30 31 #if HAVE_X86ASM 32 typedef void emu_edge_vfix_func(uint8_t *dst, x86_reg dst_stride, 33 const uint8_t *src, x86_reg src_stride, 34 x86_reg start_y, x86_reg end_y, x86_reg bh); 35 typedef void emu_edge_vvar_func(uint8_t *dst, x86_reg dst_stride, 36 const uint8_t *src, x86_reg src_stride, 37 x86_reg start_y, x86_reg end_y, x86_reg bh, 38 x86_reg w); 39 40 extern emu_edge_vfix_func ff_emu_edge_vfix1_sse2; 41 extern emu_edge_vfix_func ff_emu_edge_vfix2_sse2; 42 extern emu_edge_vfix_func ff_emu_edge_vfix3_sse2; 43 extern emu_edge_vfix_func ff_emu_edge_vfix4_sse2; 44 extern emu_edge_vfix_func ff_emu_edge_vfix5_sse2; 45 extern emu_edge_vfix_func ff_emu_edge_vfix6_sse2; 46 extern emu_edge_vfix_func ff_emu_edge_vfix7_sse2; 47 extern emu_edge_vfix_func ff_emu_edge_vfix8_sse2; 48 extern emu_edge_vfix_func ff_emu_edge_vfix9_sse2; 49 extern emu_edge_vfix_func ff_emu_edge_vfix10_sse2; 50 extern emu_edge_vfix_func ff_emu_edge_vfix11_sse2; 51 extern emu_edge_vfix_func ff_emu_edge_vfix12_sse2; 52 extern emu_edge_vfix_func ff_emu_edge_vfix13_sse2; 53 extern emu_edge_vfix_func ff_emu_edge_vfix14_sse2; 54 extern emu_edge_vfix_func ff_emu_edge_vfix15_sse2; 55 extern emu_edge_vfix_func ff_emu_edge_vfix16_sse2; 56 extern emu_edge_vfix_func ff_emu_edge_vfix17_sse2; 57 extern emu_edge_vfix_func ff_emu_edge_vfix18_sse2; 58 extern emu_edge_vfix_func ff_emu_edge_vfix19_sse2; 59 extern emu_edge_vfix_func ff_emu_edge_vfix20_sse2; 60 extern emu_edge_vfix_func ff_emu_edge_vfix21_sse2; 61 extern emu_edge_vfix_func ff_emu_edge_vfix22_sse2; 62 static emu_edge_vfix_func * const vfixtbl_sse2[22] = { 63 ff_emu_edge_vfix1_sse2, ff_emu_edge_vfix2_sse2, ff_emu_edge_vfix3_sse2, 64 ff_emu_edge_vfix4_sse2, ff_emu_edge_vfix5_sse2, ff_emu_edge_vfix6_sse2, 65 ff_emu_edge_vfix7_sse2, ff_emu_edge_vfix8_sse2, ff_emu_edge_vfix9_sse2, 66 ff_emu_edge_vfix10_sse2, ff_emu_edge_vfix11_sse2, ff_emu_edge_vfix12_sse2, 67 ff_emu_edge_vfix13_sse2, ff_emu_edge_vfix14_sse2, ff_emu_edge_vfix15_sse2, 68 ff_emu_edge_vfix16_sse2, ff_emu_edge_vfix17_sse2, ff_emu_edge_vfix18_sse2, 69 ff_emu_edge_vfix19_sse2, ff_emu_edge_vfix20_sse2, ff_emu_edge_vfix21_sse2, 70 ff_emu_edge_vfix22_sse2 71 }; 72 extern emu_edge_vvar_func ff_emu_edge_vvar_sse; 73 74 typedef void emu_edge_hfix_func(uint8_t *dst, x86_reg dst_stride, 75 x86_reg start_x, x86_reg bh); 76 typedef void emu_edge_hvar_func(uint8_t *dst, x86_reg dst_stride, 77 x86_reg start_x, x86_reg n_words, x86_reg bh); 78 79 extern emu_edge_hfix_func ff_emu_edge_hfix2_sse2; 80 extern emu_edge_hfix_func ff_emu_edge_hfix4_sse2; 81 extern emu_edge_hfix_func ff_emu_edge_hfix6_sse2; 82 extern emu_edge_hfix_func ff_emu_edge_hfix8_sse2; 83 extern emu_edge_hfix_func ff_emu_edge_hfix10_sse2; 84 extern emu_edge_hfix_func ff_emu_edge_hfix12_sse2; 85 extern emu_edge_hfix_func ff_emu_edge_hfix14_sse2; 86 extern emu_edge_hfix_func ff_emu_edge_hfix16_sse2; 87 extern emu_edge_hfix_func ff_emu_edge_hfix18_sse2; 88 extern emu_edge_hfix_func ff_emu_edge_hfix20_sse2; 89 extern emu_edge_hfix_func ff_emu_edge_hfix22_sse2; 90 static emu_edge_hfix_func * const hfixtbl_sse2[11] = { 91 ff_emu_edge_hfix2_sse2, ff_emu_edge_hfix4_sse2, ff_emu_edge_hfix6_sse2, 92 ff_emu_edge_hfix8_sse2, ff_emu_edge_hfix10_sse2, ff_emu_edge_hfix12_sse2, 93 ff_emu_edge_hfix14_sse2, ff_emu_edge_hfix16_sse2, ff_emu_edge_hfix18_sse2, 94 ff_emu_edge_hfix20_sse2, ff_emu_edge_hfix22_sse2 95 }; 96 extern emu_edge_hvar_func ff_emu_edge_hvar_sse2; 97 #if HAVE_AVX2_EXTERNAL 98 extern emu_edge_hfix_func ff_emu_edge_hfix8_avx2; 99 extern emu_edge_hfix_func ff_emu_edge_hfix10_avx2; 100 extern emu_edge_hfix_func ff_emu_edge_hfix12_avx2; 101 extern emu_edge_hfix_func ff_emu_edge_hfix14_avx2; 102 extern emu_edge_hfix_func ff_emu_edge_hfix16_avx2; 103 extern emu_edge_hfix_func ff_emu_edge_hfix18_avx2; 104 extern emu_edge_hfix_func ff_emu_edge_hfix20_avx2; 105 extern emu_edge_hfix_func ff_emu_edge_hfix22_avx2; 106 static emu_edge_hfix_func * const hfixtbl_avx2[11] = { 107 ff_emu_edge_hfix2_sse2, ff_emu_edge_hfix4_sse2, ff_emu_edge_hfix6_sse2, 108 ff_emu_edge_hfix8_avx2, ff_emu_edge_hfix10_avx2, ff_emu_edge_hfix12_avx2, 109 ff_emu_edge_hfix14_avx2, ff_emu_edge_hfix16_avx2, ff_emu_edge_hfix18_avx2, 110 ff_emu_edge_hfix20_avx2, ff_emu_edge_hfix22_avx2 111 }; 112 extern emu_edge_hvar_func ff_emu_edge_hvar_avx2; 113 #endif 114 115 static av_always_inline void emulated_edge_mc(uint8_t *dst, const uint8_t *src, 116 ptrdiff_t dst_stride, 117 ptrdiff_t src_stride, 118 x86_reg block_w, x86_reg block_h, 119 x86_reg src_x, x86_reg src_y, 120 x86_reg w, x86_reg h, 121 emu_edge_vfix_func * const *vfix_tbl, 122 emu_edge_vvar_func *v_extend_var, 123 emu_edge_hfix_func * const *hfix_tbl, 124 emu_edge_hvar_func *h_extend_var) 125 { 126 x86_reg start_y, start_x, end_y, end_x, src_y_add = 0, p; 127 128 if (!w || !h) 129 return; 130 131 av_assert2(block_w <= FFABS(dst_stride)); 132 133 if (src_y >= h) { 134 src -= src_y*src_stride; 135 src_y_add = h - 1; 136 src_y = h - 1; 137 } else if (src_y <= -block_h) { 138 src -= src_y*src_stride; 139 src_y_add = 1 - block_h; 140 src_y = 1 - block_h; 141 } 142 if (src_x >= w) { 143 src += w - 1 - src_x; 144 src_x = w - 1; 145 } else if (src_x <= -block_w) { 146 src += 1 - block_w - src_x; 147 src_x = 1 - block_w; 148 } 149 150 start_y = FFMAX(0, -src_y); 151 start_x = FFMAX(0, -src_x); 152 end_y = FFMIN(block_h, h-src_y); 153 end_x = FFMIN(block_w, w-src_x); 154 av_assert2(start_x < end_x && block_w > 0); 155 av_assert2(start_y < end_y && block_h > 0); 156 157 // fill in the to-be-copied part plus all above/below 158 src += (src_y_add + start_y) * src_stride + start_x; 159 w = end_x - start_x; 160 if (w <= 22) { 161 vfix_tbl[w - 1](dst + start_x, dst_stride, src, src_stride, 162 start_y, end_y, block_h); 163 } else { 164 v_extend_var(dst + start_x, dst_stride, src, src_stride, 165 start_y, end_y, block_h, w); 166 } 167 168 // fill left 169 if (start_x) { 170 if (start_x <= 22) { 171 hfix_tbl[(start_x - 1) >> 1](dst, dst_stride, start_x, block_h); 172 } else { 173 h_extend_var(dst, dst_stride, 174 start_x, (start_x + 1) >> 1, block_h); 175 } 176 } 177 178 // fill right 179 p = block_w - end_x; 180 if (p) { 181 if (p <= 22) { 182 hfix_tbl[(p - 1) >> 1](dst + end_x - (p & 1), dst_stride, 183 -!(p & 1), block_h); 184 } else { 185 h_extend_var(dst + end_x - (p & 1), dst_stride, 186 -!(p & 1), (p + 1) >> 1, block_h); 187 } 188 } 189 } 190 191 static av_noinline void emulated_edge_mc_sse2(uint8_t *buf, const uint8_t *src, 192 ptrdiff_t buf_stride, 193 ptrdiff_t src_stride, 194 int block_w, int block_h, 195 int src_x, int src_y, int w, 196 int h) 197 { 198 emulated_edge_mc(buf, src, buf_stride, src_stride, block_w, block_h, 199 src_x, src_y, w, h, vfixtbl_sse2, &ff_emu_edge_vvar_sse, 200 hfixtbl_sse2, &ff_emu_edge_hvar_sse2); 201 } 202 203 #if HAVE_AVX2_EXTERNAL 204 static av_noinline void emulated_edge_mc_avx2(uint8_t *buf, const uint8_t *src, 205 ptrdiff_t buf_stride, 206 ptrdiff_t src_stride, 207 int block_w, int block_h, 208 int src_x, int src_y, int w, 209 int h) 210 { 211 emulated_edge_mc(buf, src, buf_stride, src_stride, block_w, block_h, 212 src_x, src_y, w, h, vfixtbl_sse2, &ff_emu_edge_vvar_sse, 213 hfixtbl_avx2, &ff_emu_edge_hvar_avx2); 214 } 215 #endif /* HAVE_AVX2_EXTERNAL */ 216 #endif /* HAVE_X86ASM */ 217 218 void ff_prefetch_mmxext(const uint8_t *buf, ptrdiff_t stride, int h); 219 220 av_cold void ff_videodsp_init_x86(VideoDSPContext *ctx, int bpc) 221 { 222 #if HAVE_X86ASM 223 int cpu_flags = av_get_cpu_flags(); 224 225 if (EXTERNAL_MMXEXT(cpu_flags)) { 226 ctx->prefetch = ff_prefetch_mmxext; 227 } 228 if (EXTERNAL_SSE2(cpu_flags) && bpc <= 8) { 229 ctx->emulated_edge_mc = emulated_edge_mc_sse2; 230 } 231 #if HAVE_AVX2_EXTERNAL 232 if (EXTERNAL_AVX2(cpu_flags) && bpc <= 8) { 233 ctx->emulated_edge_mc = emulated_edge_mc_avx2; 234 } 235 #endif 236 #endif /* HAVE_X86ASM */ 237 }