ffmpeg/libavcodec/x86/mpegvideoenc.c

   1 /*
   2  * The simplest mpeg encoder (well, it was the simplest!)
   3  * Copyright (c) 2000,2001 Fabrice Bellard
   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/cpu.h"
  24 #include "libavutil/x86/asm.h"
  25 #include "libavutil/x86/cpu.h"
  26 #include "libavcodec/avcodec.h"
  27 #include "libavcodec/dct.h"
  28 #include "libavcodec/mpegvideo.h"
  29
  30 /* not permutated inverse zigzag_direct + 1 for MMX quantizer */
  31 DECLARE_ALIGNED(16, static uint16_t, inv_zigzag_direct16)[64];
  32
  33 #if HAVE_6REGS
  34
  35 #if HAVE_MMX_INLINE
  36 #define COMPILE_TEMPLATE_MMXEXT 0
  37 #define COMPILE_TEMPLATE_SSE2   0
  38 #define COMPILE_TEMPLATE_SSSE3  0
  39 #define RENAME(a)      a ## _mmx
  40 #define RENAME_FDCT(a) a ## _mmx
  41 #include "mpegvideoenc_template.c"
  42 #endif /* HAVE_MMX_INLINE */
  43
  44 #if HAVE_MMXEXT_INLINE
  45 #undef COMPILE_TEMPLATE_SSSE3
  46 #undef COMPILE_TEMPLATE_SSE2
  47 #undef COMPILE_TEMPLATE_MMXEXT
  48 #define COMPILE_TEMPLATE_MMXEXT 1
  49 #define COMPILE_TEMPLATE_SSE2   0
  50 #define COMPILE_TEMPLATE_SSSE3  0
  51 #undef RENAME
  52 #undef RENAME_FDCT
  53 #define RENAME(a)      a ## _mmxext
  54 #define RENAME_FDCT(a) a ## _mmxext
  55 #include "mpegvideoenc_template.c"
  56 #endif /* HAVE_MMXEXT_INLINE */
  57
  58 #if HAVE_SSE2_INLINE
  59 #undef COMPILE_TEMPLATE_MMXEXT
  60 #undef COMPILE_TEMPLATE_SSE2
  61 #undef COMPILE_TEMPLATE_SSSE3
  62 #define COMPILE_TEMPLATE_MMXEXT 0
  63 #define COMPILE_TEMPLATE_SSE2   1
  64 #define COMPILE_TEMPLATE_SSSE3  0
  65 #undef RENAME
  66 #undef RENAME_FDCT
  67 #define RENAME(a)      a ## _sse2
  68 #define RENAME_FDCT(a) a ## _sse2
  69 #include "mpegvideoenc_template.c"
  70 #endif /* HAVE_SSE2_INLINE */
  71
  72 #if HAVE_SSSE3_INLINE
  73 #undef COMPILE_TEMPLATE_MMXEXT
  74 #undef COMPILE_TEMPLATE_SSE2
  75 #undef COMPILE_TEMPLATE_SSSE3
  76 #define COMPILE_TEMPLATE_MMXEXT 0
  77 #define COMPILE_TEMPLATE_SSE2   1
  78 #define COMPILE_TEMPLATE_SSSE3  1
  79 #undef RENAME
  80 #undef RENAME_FDCT
  81 #define RENAME(a)      a ## _ssse3
  82 #define RENAME_FDCT(a) a ## _sse2
  83 #include "mpegvideoenc_template.c"
  84 #endif /* HAVE_SSSE3_INLINE */
  85
  86 #endif /* HAVE_6REGS */
  87
  88 #if HAVE_INLINE_ASM
  89 static void  denoise_dct_mmx(MpegEncContext *s, int16_t *block){
  90     const int intra= s->mb_intra;
  91     int *sum= s->dct_error_sum[intra];
  92     uint16_t *offset= s->dct_offset[intra];
  93
  94     s->dct_count[intra]++;
  95
  96     __asm__ volatile(
  97         "pxor %%mm7, %%mm7                      \n\t"
  98         "1:                                     \n\t"
  99         "pxor %%mm0, %%mm0                      \n\t"
 100         "pxor %%mm1, %%mm1                      \n\t"
 101         "movq (%0), %%mm2                       \n\t"
 102         "movq 8(%0), %%mm3                      \n\t"
 103         "pcmpgtw %%mm2, %%mm0                   \n\t"
 104         "pcmpgtw %%mm3, %%mm1                   \n\t"
 105         "pxor %%mm0, %%mm2                      \n\t"
 106         "pxor %%mm1, %%mm3                      \n\t"
 107         "psubw %%mm0, %%mm2                     \n\t"
 108         "psubw %%mm1, %%mm3                     \n\t"
 109         "movq %%mm2, %%mm4                      \n\t"
 110         "movq %%mm3, %%mm5                      \n\t"
 111         "psubusw (%2), %%mm2                    \n\t"
 112         "psubusw 8(%2), %%mm3                   \n\t"
 113         "pxor %%mm0, %%mm2                      \n\t"
 114         "pxor %%mm1, %%mm3                      \n\t"
 115         "psubw %%mm0, %%mm2                     \n\t"
 116         "psubw %%mm1, %%mm3                     \n\t"
 117         "movq %%mm2, (%0)                       \n\t"
 118         "movq %%mm3, 8(%0)                      \n\t"
 119         "movq %%mm4, %%mm2                      \n\t"
 120         "movq %%mm5, %%mm3                      \n\t"
 121         "punpcklwd %%mm7, %%mm4                 \n\t"
 122         "punpckhwd %%mm7, %%mm2                 \n\t"
 123         "punpcklwd %%mm7, %%mm5                 \n\t"
 124         "punpckhwd %%mm7, %%mm3                 \n\t"
 125         "paddd (%1), %%mm4                      \n\t"
 126         "paddd 8(%1), %%mm2                     \n\t"
 127         "paddd 16(%1), %%mm5                    \n\t"
 128         "paddd 24(%1), %%mm3                    \n\t"
 129         "movq %%mm4, (%1)                       \n\t"
 130         "movq %%mm2, 8(%1)                      \n\t"
 131         "movq %%mm5, 16(%1)                     \n\t"
 132         "movq %%mm3, 24(%1)                     \n\t"
 133         "add $16, %0                            \n\t"
 134         "add $32, %1                            \n\t"
 135         "add $16, %2                            \n\t"
 136         "cmp %3, %0                             \n\t"
 137             " jb 1b                             \n\t"
 138         : "+r" (block), "+r" (sum), "+r" (offset)
 139         : "r"(block+64)
 140     );
 141 }
 142
 143 static void  denoise_dct_sse2(MpegEncContext *s, int16_t *block){
 144     const int intra= s->mb_intra;
 145     int *sum= s->dct_error_sum[intra];
 146     uint16_t *offset= s->dct_offset[intra];
 147
 148     s->dct_count[intra]++;
 149
 150     __asm__ volatile(
 151         "pxor %%xmm7, %%xmm7                    \n\t"
 152         "1:                                     \n\t"
 153         "pxor %%xmm0, %%xmm0                    \n\t"
 154         "pxor %%xmm1, %%xmm1                    \n\t"
 155         "movdqa (%0), %%xmm2                    \n\t"
 156         "movdqa 16(%0), %%xmm3                  \n\t"
 157         "pcmpgtw %%xmm2, %%xmm0                 \n\t"
 158         "pcmpgtw %%xmm3, %%xmm1                 \n\t"
 159         "pxor %%xmm0, %%xmm2                    \n\t"
 160         "pxor %%xmm1, %%xmm3                    \n\t"
 161         "psubw %%xmm0, %%xmm2                   \n\t"
 162         "psubw %%xmm1, %%xmm3                   \n\t"
 163         "movdqa %%xmm2, %%xmm4                  \n\t"
 164         "movdqa %%xmm3, %%xmm5                  \n\t"
 165         "psubusw (%2), %%xmm2                   \n\t"
 166         "psubusw 16(%2), %%xmm3                 \n\t"
 167         "pxor %%xmm0, %%xmm2                    \n\t"
 168         "pxor %%xmm1, %%xmm3                    \n\t"
 169         "psubw %%xmm0, %%xmm2                   \n\t"
 170         "psubw %%xmm1, %%xmm3                   \n\t"
 171         "movdqa %%xmm2, (%0)                    \n\t"
 172         "movdqa %%xmm3, 16(%0)                  \n\t"
 173         "movdqa %%xmm4, %%xmm6                  \n\t"
 174         "movdqa %%xmm5, %%xmm0                  \n\t"
 175         "punpcklwd %%xmm7, %%xmm4               \n\t"
 176         "punpckhwd %%xmm7, %%xmm6               \n\t"
 177         "punpcklwd %%xmm7, %%xmm5               \n\t"
 178         "punpckhwd %%xmm7, %%xmm0               \n\t"
 179         "paddd (%1), %%xmm4                     \n\t"
 180         "paddd 16(%1), %%xmm6                   \n\t"
 181         "paddd 32(%1), %%xmm5                   \n\t"
 182         "paddd 48(%1), %%xmm0                   \n\t"
 183         "movdqa %%xmm4, (%1)                    \n\t"
 184         "movdqa %%xmm6, 16(%1)                  \n\t"
 185         "movdqa %%xmm5, 32(%1)                  \n\t"
 186         "movdqa %%xmm0, 48(%1)                  \n\t"
 187         "add $32, %0                            \n\t"
 188         "add $64, %1                            \n\t"
 189         "add $32, %2                            \n\t"
 190         "cmp %3, %0                             \n\t"
 191             " jb 1b                             \n\t"
 192         : "+r" (block), "+r" (sum), "+r" (offset)
 193         : "r"(block+64)
 194           XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3",
 195                             "%xmm4", "%xmm5", "%xmm6", "%xmm7")
 196     );
 197 }
 198 #endif /* HAVE_INLINE_ASM */
 199
 200 av_cold void ff_dct_encode_init_x86(MpegEncContext *s)
 201 {
 202     const int dct_algo = s->avctx->dct_algo;
 203     int i;
 204
 205     for (i = 0; i < 64; i++)
 206         inv_zigzag_direct16[ff_zigzag_direct[i]] = i + 1;
 207
 208     if (dct_algo == FF_DCT_AUTO || dct_algo == FF_DCT_MMX) {
 209 #if HAVE_MMX_INLINE
 210         int cpu_flags = av_get_cpu_flags();
 211         if (INLINE_MMX(cpu_flags)) {
 212 #if HAVE_6REGS
 213             s->dct_quantize = dct_quantize_mmx;
 214 #endif
 215             s->denoise_dct  = denoise_dct_mmx;
 216         }
 217 #endif
 218 #if HAVE_6REGS && HAVE_MMXEXT_INLINE
 219         if (INLINE_MMXEXT(cpu_flags))
 220             s->dct_quantize = dct_quantize_mmxext;
 221 #endif
 222 #if HAVE_SSE2_INLINE
 223         if (INLINE_SSE2(cpu_flags)) {
 224 #if HAVE_6REGS
 225             s->dct_quantize = dct_quantize_sse2;
 226 #endif
 227             s->denoise_dct  = denoise_dct_sse2;
 228         }
 229 #endif
 230 #if HAVE_6REGS && HAVE_SSSE3_INLINE
 231         if (INLINE_SSSE3(cpu_flags))
 232             s->dct_quantize = dct_quantize_ssse3;
 233 #endif
 234     }
 235 }