ffmpeg/libavcodec/x86/videodsp_init.c

   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/mem.h"
  28 #include "libavutil/x86/asm.h"
  29 #include "libavutil/x86/cpu.h"
  30 #include "libavcodec/videodsp.h"
  31
  32 #if HAVE_YASM
  33 typedef void emu_edge_vfix_func(uint8_t *dst, x86_reg dst_stride,
  34                                 const uint8_t *src, x86_reg src_stride,
  35                                 x86_reg start_y, x86_reg end_y, x86_reg bh);
  36 typedef void emu_edge_vvar_func(uint8_t *dst, x86_reg dst_stride,
  37                                 const uint8_t *src, x86_reg src_stride,
  38                                 x86_reg start_y, x86_reg end_y, x86_reg bh,
  39                                 x86_reg w);
  40
  41 extern emu_edge_vfix_func ff_emu_edge_vfix1_mmx;
  42 extern emu_edge_vfix_func ff_emu_edge_vfix2_mmx;
  43 extern emu_edge_vfix_func ff_emu_edge_vfix3_mmx;
  44 extern emu_edge_vfix_func ff_emu_edge_vfix4_mmx;
  45 extern emu_edge_vfix_func ff_emu_edge_vfix5_mmx;
  46 extern emu_edge_vfix_func ff_emu_edge_vfix6_mmx;
  47 extern emu_edge_vfix_func ff_emu_edge_vfix7_mmx;
  48 extern emu_edge_vfix_func ff_emu_edge_vfix8_mmx;
  49 extern emu_edge_vfix_func ff_emu_edge_vfix9_mmx;
  50 extern emu_edge_vfix_func ff_emu_edge_vfix10_mmx;
  51 extern emu_edge_vfix_func ff_emu_edge_vfix11_mmx;
  52 extern emu_edge_vfix_func ff_emu_edge_vfix12_mmx;
  53 extern emu_edge_vfix_func ff_emu_edge_vfix13_mmx;
  54 extern emu_edge_vfix_func ff_emu_edge_vfix14_mmx;
  55 extern emu_edge_vfix_func ff_emu_edge_vfix15_mmx;
  56 extern emu_edge_vfix_func ff_emu_edge_vfix16_mmx;
  57 extern emu_edge_vfix_func ff_emu_edge_vfix17_mmx;
  58 extern emu_edge_vfix_func ff_emu_edge_vfix18_mmx;
  59 extern emu_edge_vfix_func ff_emu_edge_vfix19_mmx;
  60 extern emu_edge_vfix_func ff_emu_edge_vfix20_mmx;
  61 extern emu_edge_vfix_func ff_emu_edge_vfix21_mmx;
  62 extern emu_edge_vfix_func ff_emu_edge_vfix22_mmx;
  63 #if ARCH_X86_32
  64 static emu_edge_vfix_func * const vfixtbl_mmx[22] = {
  65     &ff_emu_edge_vfix1_mmx,  &ff_emu_edge_vfix2_mmx,  &ff_emu_edge_vfix3_mmx,
  66     &ff_emu_edge_vfix4_mmx,  &ff_emu_edge_vfix5_mmx,  &ff_emu_edge_vfix6_mmx,
  67     &ff_emu_edge_vfix7_mmx,  &ff_emu_edge_vfix8_mmx,  &ff_emu_edge_vfix9_mmx,
  68     &ff_emu_edge_vfix10_mmx, &ff_emu_edge_vfix11_mmx, &ff_emu_edge_vfix12_mmx,
  69     &ff_emu_edge_vfix13_mmx, &ff_emu_edge_vfix14_mmx, &ff_emu_edge_vfix15_mmx,
  70     &ff_emu_edge_vfix16_mmx, &ff_emu_edge_vfix17_mmx, &ff_emu_edge_vfix18_mmx,
  71     &ff_emu_edge_vfix19_mmx, &ff_emu_edge_vfix20_mmx, &ff_emu_edge_vfix21_mmx,
  72     &ff_emu_edge_vfix22_mmx
  73 };
  74 #endif
  75 extern emu_edge_vvar_func ff_emu_edge_vvar_mmx;
  76 extern emu_edge_vfix_func ff_emu_edge_vfix16_sse;
  77 extern emu_edge_vfix_func ff_emu_edge_vfix17_sse;
  78 extern emu_edge_vfix_func ff_emu_edge_vfix18_sse;
  79 extern emu_edge_vfix_func ff_emu_edge_vfix19_sse;
  80 extern emu_edge_vfix_func ff_emu_edge_vfix20_sse;
  81 extern emu_edge_vfix_func ff_emu_edge_vfix21_sse;
  82 extern emu_edge_vfix_func ff_emu_edge_vfix22_sse;
  83 static emu_edge_vfix_func * const vfixtbl_sse[22] = {
  84     ff_emu_edge_vfix1_mmx,  ff_emu_edge_vfix2_mmx,  ff_emu_edge_vfix3_mmx,
  85     ff_emu_edge_vfix4_mmx,  ff_emu_edge_vfix5_mmx,  ff_emu_edge_vfix6_mmx,
  86     ff_emu_edge_vfix7_mmx,  ff_emu_edge_vfix8_mmx,  ff_emu_edge_vfix9_mmx,
  87     ff_emu_edge_vfix10_mmx, ff_emu_edge_vfix11_mmx, ff_emu_edge_vfix12_mmx,
  88     ff_emu_edge_vfix13_mmx, ff_emu_edge_vfix14_mmx, ff_emu_edge_vfix15_mmx,
  89     ff_emu_edge_vfix16_sse, ff_emu_edge_vfix17_sse, ff_emu_edge_vfix18_sse,
  90     ff_emu_edge_vfix19_sse, ff_emu_edge_vfix20_sse, ff_emu_edge_vfix21_sse,
  91     ff_emu_edge_vfix22_sse
  92 };
  93 extern emu_edge_vvar_func ff_emu_edge_vvar_sse;
  94
  95 typedef void emu_edge_hfix_func(uint8_t *dst, x86_reg dst_stride,
  96                                 x86_reg start_x, x86_reg bh);
  97 typedef void emu_edge_hvar_func(uint8_t *dst, x86_reg dst_stride,
  98                                 x86_reg start_x, x86_reg n_words, x86_reg bh);
  99
 100 extern emu_edge_hfix_func ff_emu_edge_hfix2_mmx;
 101 extern emu_edge_hfix_func ff_emu_edge_hfix4_mmx;
 102 extern emu_edge_hfix_func ff_emu_edge_hfix6_mmx;
 103 extern emu_edge_hfix_func ff_emu_edge_hfix8_mmx;
 104 extern emu_edge_hfix_func ff_emu_edge_hfix10_mmx;
 105 extern emu_edge_hfix_func ff_emu_edge_hfix12_mmx;
 106 extern emu_edge_hfix_func ff_emu_edge_hfix14_mmx;
 107 extern emu_edge_hfix_func ff_emu_edge_hfix16_mmx;
 108 extern emu_edge_hfix_func ff_emu_edge_hfix18_mmx;
 109 extern emu_edge_hfix_func ff_emu_edge_hfix20_mmx;
 110 extern emu_edge_hfix_func ff_emu_edge_hfix22_mmx;
 111 #if ARCH_X86_32
 112 static emu_edge_hfix_func * const hfixtbl_mmx[11] = {
 113     ff_emu_edge_hfix2_mmx,  ff_emu_edge_hfix4_mmx,  ff_emu_edge_hfix6_mmx,
 114     ff_emu_edge_hfix8_mmx,  ff_emu_edge_hfix10_mmx, ff_emu_edge_hfix12_mmx,
 115     ff_emu_edge_hfix14_mmx, ff_emu_edge_hfix16_mmx, ff_emu_edge_hfix18_mmx,
 116     ff_emu_edge_hfix20_mmx, ff_emu_edge_hfix22_mmx
 117 };
 118 #endif
 119 extern emu_edge_hvar_func ff_emu_edge_hvar_mmx;
 120 extern emu_edge_hfix_func ff_emu_edge_hfix16_sse2;
 121 extern emu_edge_hfix_func ff_emu_edge_hfix18_sse2;
 122 extern emu_edge_hfix_func ff_emu_edge_hfix20_sse2;
 123 extern emu_edge_hfix_func ff_emu_edge_hfix22_sse2;
 124 static emu_edge_hfix_func * const hfixtbl_sse2[11] = {
 125     ff_emu_edge_hfix2_mmx,  ff_emu_edge_hfix4_mmx,  ff_emu_edge_hfix6_mmx,
 126     ff_emu_edge_hfix8_mmx,  ff_emu_edge_hfix10_mmx, ff_emu_edge_hfix12_mmx,
 127     ff_emu_edge_hfix14_mmx, ff_emu_edge_hfix16_sse2, ff_emu_edge_hfix18_sse2,
 128     ff_emu_edge_hfix20_sse2, ff_emu_edge_hfix22_sse2
 129 };
 130 extern emu_edge_hvar_func ff_emu_edge_hvar_sse2;
 131 #if HAVE_AVX2_EXTERNAL
 132 extern emu_edge_hfix_func ff_emu_edge_hfix8_avx2;
 133 extern emu_edge_hfix_func ff_emu_edge_hfix10_avx2;
 134 extern emu_edge_hfix_func ff_emu_edge_hfix12_avx2;
 135 extern emu_edge_hfix_func ff_emu_edge_hfix14_avx2;
 136 extern emu_edge_hfix_func ff_emu_edge_hfix16_avx2;
 137 extern emu_edge_hfix_func ff_emu_edge_hfix18_avx2;
 138 extern emu_edge_hfix_func ff_emu_edge_hfix20_avx2;
 139 extern emu_edge_hfix_func ff_emu_edge_hfix22_avx2;
 140 static emu_edge_hfix_func * const hfixtbl_avx2[11] = {
 141     ff_emu_edge_hfix2_mmx,  ff_emu_edge_hfix4_mmx,  ff_emu_edge_hfix6_mmx,
 142     ff_emu_edge_hfix8_avx2,  ff_emu_edge_hfix10_avx2, ff_emu_edge_hfix12_avx2,
 143     ff_emu_edge_hfix14_avx2, ff_emu_edge_hfix16_avx2, ff_emu_edge_hfix18_avx2,
 144     ff_emu_edge_hfix20_avx2, ff_emu_edge_hfix22_avx2
 145 };
 146 extern emu_edge_hvar_func ff_emu_edge_hvar_avx2;
 147 #endif
 148
 149 static av_always_inline void emulated_edge_mc(uint8_t *dst, const uint8_t *src,
 150                                               ptrdiff_t dst_stride,
 151                                               ptrdiff_t src_stride,
 152                                               x86_reg block_w, x86_reg block_h,
 153                                               x86_reg src_x, x86_reg src_y,
 154                                               x86_reg w, x86_reg h,
 155                                               emu_edge_vfix_func * const *vfix_tbl,
 156                                               emu_edge_vvar_func *v_extend_var,
 157                                               emu_edge_hfix_func * const *hfix_tbl,
 158                                               emu_edge_hvar_func *h_extend_var)
 159 {
 160     x86_reg start_y, start_x, end_y, end_x, src_y_add = 0, p;
 161
 162     if (!w || !h)
 163         return;
 164
 165     if (src_y >= h) {
 166         src -= src_y*src_stride;
 167         src_y_add = h - 1;
 168         src_y     = h - 1;
 169     } else if (src_y <= -block_h) {
 170         src -= src_y*src_stride;
 171         src_y_add = 1 - block_h;
 172         src_y     = 1 - block_h;
 173     }
 174     if (src_x >= w) {
 175         src   += w - 1 - src_x;
 176         src_x  = w - 1;
 177     } else if (src_x <= -block_w) {
 178         src   += 1 - block_w - src_x;
 179         src_x  = 1 - block_w;
 180     }
 181
 182     start_y = FFMAX(0, -src_y);
 183     start_x = FFMAX(0, -src_x);
 184     end_y   = FFMIN(block_h, h-src_y);
 185     end_x   = FFMIN(block_w, w-src_x);
 186     av_assert2(start_x < end_x && block_w > 0);
 187     av_assert2(start_y < end_y && block_h > 0);
 188
 189     // fill in the to-be-copied part plus all above/below
 190     src += (src_y_add + start_y) * src_stride + start_x;
 191     w = end_x - start_x;
 192     if (w <= 22) {
 193         vfix_tbl[w - 1](dst + start_x, dst_stride, src, src_stride,
 194                         start_y, end_y, block_h);
 195     } else {
 196         v_extend_var(dst + start_x, dst_stride, src, src_stride,
 197                      start_y, end_y, block_h, w);
 198     }
 199
 200     // fill left
 201     if (start_x) {
 202         if (start_x <= 22) {
 203             hfix_tbl[(start_x - 1) >> 1](dst, dst_stride, start_x, block_h);
 204         } else {
 205             h_extend_var(dst, dst_stride,
 206                          start_x, (start_x + 1) >> 1, block_h);
 207         }
 208     }
 209
 210     // fill right
 211     p = block_w - end_x;
 212     if (p) {
 213         if (p <= 22) {
 214             hfix_tbl[(p - 1) >> 1](dst + end_x - (p & 1), dst_stride,
 215                                    -!(p & 1), block_h);
 216         } else {
 217             h_extend_var(dst + end_x - (p & 1), dst_stride,
 218                          -!(p & 1), (p + 1) >> 1, block_h);
 219         }
 220     }
 221 }
 222
 223 #if ARCH_X86_32
 224 static av_noinline void emulated_edge_mc_mmx(uint8_t *buf, const uint8_t *src,
 225                                              ptrdiff_t buf_stride,
 226                                              ptrdiff_t src_stride,
 227                                              int block_w, int block_h,
 228                                              int src_x, int src_y, int w, int h)
 229 {
 230     emulated_edge_mc(buf, src, buf_stride, src_stride, block_w, block_h,
 231                      src_x, src_y, w, h, vfixtbl_mmx, &ff_emu_edge_vvar_mmx,
 232                      hfixtbl_mmx, &ff_emu_edge_hvar_mmx);
 233 }
 234
 235 static av_noinline void emulated_edge_mc_sse(uint8_t *buf, const uint8_t *src,
 236                                              ptrdiff_t buf_stride,
 237                                              ptrdiff_t src_stride,
 238                                              int block_w, int block_h,
 239                                              int src_x, int src_y, int w, int h)
 240 {
 241     emulated_edge_mc(buf, src, buf_stride, src_stride, block_w, block_h,
 242                      src_x, src_y, w, h, vfixtbl_sse, &ff_emu_edge_vvar_sse,
 243                      hfixtbl_mmx, &ff_emu_edge_hvar_mmx);
 244 }
 245 #endif
 246
 247 static av_noinline void emulated_edge_mc_sse2(uint8_t *buf, const uint8_t *src,
 248                                               ptrdiff_t buf_stride,
 249                                               ptrdiff_t src_stride,
 250                                               int block_w, int block_h,
 251                                               int src_x, int src_y, int w,
 252                                               int h)
 253 {
 254     emulated_edge_mc(buf, src, buf_stride, src_stride, block_w, block_h,
 255                      src_x, src_y, w, h, vfixtbl_sse, &ff_emu_edge_vvar_sse,
 256                      hfixtbl_sse2, &ff_emu_edge_hvar_sse2);
 257 }
 258
 259 #if HAVE_AVX2_EXTERNAL
 260 static av_noinline void emulated_edge_mc_avx2(uint8_t *buf, const uint8_t *src,
 261                                               ptrdiff_t buf_stride,
 262                                               ptrdiff_t src_stride,
 263                                               int block_w, int block_h,
 264                                               int src_x, int src_y, int w,
 265                                               int h)
 266 {
 267     emulated_edge_mc(buf, src, buf_stride, src_stride, block_w, block_h,
 268                      src_x, src_y, w, h, vfixtbl_sse, &ff_emu_edge_vvar_sse,
 269                      hfixtbl_avx2, &ff_emu_edge_hvar_avx2);
 270 }
 271 #endif /* HAVE_AVX2_EXTERNAL */
 272 #endif /* HAVE_YASM */
 273
 274 void ff_prefetch_mmxext(uint8_t *buf, ptrdiff_t stride, int h);
 275 void ff_prefetch_3dnow(uint8_t *buf, ptrdiff_t stride, int h);
 276
 277 av_cold void ff_videodsp_init_x86(VideoDSPContext *ctx, int bpc)
 278 {
 279 #if HAVE_YASM
 280     int cpu_flags = av_get_cpu_flags();
 281
 282 #if ARCH_X86_32
 283     if (EXTERNAL_MMX(cpu_flags) && bpc <= 8) {
 284         ctx->emulated_edge_mc = emulated_edge_mc_mmx;
 285     }
 286     if (EXTERNAL_AMD3DNOW(cpu_flags)) {
 287         ctx->prefetch = ff_prefetch_3dnow;
 288     }
 289 #endif /* ARCH_X86_32 */
 290     if (EXTERNAL_MMXEXT(cpu_flags)) {
 291         ctx->prefetch = ff_prefetch_mmxext;
 292     }
 293 #if ARCH_X86_32
 294     if (EXTERNAL_SSE(cpu_flags) && bpc <= 8) {
 295         ctx->emulated_edge_mc = emulated_edge_mc_sse;
 296     }
 297 #endif /* ARCH_X86_32 */
 298     if (EXTERNAL_SSE2(cpu_flags) && bpc <= 8) {
 299         ctx->emulated_edge_mc = emulated_edge_mc_sse2;
 300     }
 301 #if HAVE_AVX2_EXTERNAL
 302     if (EXTERNAL_AVX2(cpu_flags) && bpc <= 8) {
 303         ctx->emulated_edge_mc = emulated_edge_mc_avx2;
 304     }
 305 #endif
 306 #endif /* HAVE_YASM */
 307 }