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FFmpeg/libavcodec/i386/dsputil_h264_template_mmx.c

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  1. /*

  2.  * Copyright (c) 2005 Zoltan Hidvegi <hzoli -a- hzoli -d- com>,

  3.  *                    Loren Merritt

  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. /**

  23.  * MMX optimized version of (put|avg)_h264_chroma_mc8.

  24.  * H264_CHROMA_MC8_TMPL must be defined to the desired function name

  25.  * H264_CHROMA_OP must be defined to empty for put and pavgb/pavgusb for avg

  26.  * H264_CHROMA_MC8_MV0 must be defined to a (put|avg)_pixels8 function

  27.  */

  28. static void H264_CHROMA_MC8_TMPL(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y, int rnd)

  29. {

  30.     const uint64_t *rnd_reg;

  31.     DECLARE_ALIGNED_8(uint64_t, AA);

  32.     DECLARE_ALIGNED_8(uint64_t, DD);

  33.     int i;

  34. 

  35.     if(y==0 && x==0) {

  36.         /* no filter needed */

  37.         H264_CHROMA_MC8_MV0(dst, src, stride, h);

  38.         return;

  39.     }

  40. 

  41.     assert(x<8 && y<8 && x>=0 && y>=0);

  42. 

  43.     if(y==0 || x==0)

  44.     {

  45.         /* 1 dimensional filter only */

  46.         const int dxy = x ? 1 : stride;

  47. 

  48.         rnd_reg = rnd ? &ff_pw_4 : &ff_pw_3;

  49. 

  50.         __asm__ volatile(

  51.             "movd %0, %%mm5\n\t"

  52.             "movq %1, %%mm4\n\t"

  53.             "movq %2, %%mm6\n\t"         /* mm6 = rnd */

  54.             "punpcklwd %%mm5, %%mm5\n\t"

  55.             "punpckldq %%mm5, %%mm5\n\t" /* mm5 = B = x */

  56.             "pxor %%mm7, %%mm7\n\t"

  57.             "psubw %%mm5, %%mm4\n\t"     /* mm4 = A = 8-x */

  58.             :: "rm"(x+y), "m"(ff_pw_8), "m"(*rnd_reg));

  59. 

  60.         for(i=0; i<h; i++) {

  61.             __asm__ volatile(

  62.                 /* mm0 = src[0..7], mm1 = src[1..8] */

  63.                 "movq %0, %%mm0\n\t"

  64.                 "movq %1, %%mm2\n\t"

  65.                 :: "m"(src[0]), "m"(src[dxy]));

  66. 

  67.             __asm__ volatile(

  68.                 /* [mm0,mm1] = A * src[0..7] */

  69.                 /* [mm2,mm3] = B * src[1..8] */

  70.                 "movq %%mm0, %%mm1\n\t"

  71.                 "movq %%mm2, %%mm3\n\t"

  72.                 "punpcklbw %%mm7, %%mm0\n\t"

  73.                 "punpckhbw %%mm7, %%mm1\n\t"

  74.                 "punpcklbw %%mm7, %%mm2\n\t"

  75.                 "punpckhbw %%mm7, %%mm3\n\t"

  76.                 "pmullw %%mm4, %%mm0\n\t"

  77.                 "pmullw %%mm4, %%mm1\n\t"

  78.                 "pmullw %%mm5, %%mm2\n\t"

  79.                 "pmullw %%mm5, %%mm3\n\t"

  80. 

  81.                 /* dst[0..7] = (A * src[0..7] + B * src[1..8] + 4) >> 3 */

  82.                 "paddw %%mm6, %%mm0\n\t"

  83.                 "paddw %%mm6, %%mm1\n\t"

  84.                 "paddw %%mm2, %%mm0\n\t"

  85.                 "paddw %%mm3, %%mm1\n\t"

  86.                 "psrlw $3, %%mm0\n\t"

  87.                 "psrlw $3, %%mm1\n\t"

  88.                 "packuswb %%mm1, %%mm0\n\t"

  89.                 H264_CHROMA_OP(%0, %%mm0)

  90.                 "movq %%mm0, %0\n\t"

  91.                 : "=m" (dst[0]));

  92. 

  93.             src += stride;

  94.             dst += stride;

  95.         }

  96.         return;

  97.     }

  98. 

  99.     /* general case, bilinear */

  100.     rnd_reg = rnd ? &ff_pw_32.a : &ff_pw_28.a;

  101.     __asm__ volatile("movd %2, %%mm4\n\t"

  102.                  "movd %3, %%mm6\n\t"

  103.                  "punpcklwd %%mm4, %%mm4\n\t"

  104.                  "punpcklwd %%mm6, %%mm6\n\t"

  105.                  "punpckldq %%mm4, %%mm4\n\t" /* mm4 = x words */

  106.                  "punpckldq %%mm6, %%mm6\n\t" /* mm6 = y words */

  107.                  "movq %%mm4, %%mm5\n\t"

  108.                  "pmullw %%mm6, %%mm4\n\t"    /* mm4 = x * y */

  109.                  "psllw $3, %%mm5\n\t"

  110.                  "psllw $3, %%mm6\n\t"

  111.                  "movq %%mm5, %%mm7\n\t"

  112.                  "paddw %%mm6, %%mm7\n\t"

  113.                  "movq %%mm4, %1\n\t"         /* DD = x * y */

  114.                  "psubw %%mm4, %%mm5\n\t"     /* mm5 = B = 8x - xy */

  115.                  "psubw %%mm4, %%mm6\n\t"     /* mm6 = C = 8y - xy */

  116.                  "paddw %4, %%mm4\n\t"

  117.                  "psubw %%mm7, %%mm4\n\t"     /* mm4 = A = xy - (8x+8y) + 64 */

  118.                  "pxor %%mm7, %%mm7\n\t"

  119.                  "movq %%mm4, %0\n\t"

  120.                  : "=m" (AA), "=m" (DD) : "rm" (x), "rm" (y), "m" (ff_pw_64));

  121. 

  122.     __asm__ volatile(

  123.         /* mm0 = src[0..7], mm1 = src[1..8] */

  124.         "movq %0, %%mm0\n\t"

  125.         "movq %1, %%mm1\n\t"

  126.         : : "m" (src[0]), "m" (src[1]));

  127. 

  128.     for(i=0; i<h; i++) {

  129.         src += stride;

  130. 

  131.         __asm__ volatile(

  132.             /* mm2 = A * src[0..3] + B * src[1..4] */

  133.             /* mm3 = A * src[4..7] + B * src[5..8] */

  134.             "movq %%mm0, %%mm2\n\t"

  135.             "movq %%mm1, %%mm3\n\t"

  136.             "punpckhbw %%mm7, %%mm0\n\t"

  137.             "punpcklbw %%mm7, %%mm1\n\t"

  138.             "punpcklbw %%mm7, %%mm2\n\t"

  139.             "punpckhbw %%mm7, %%mm3\n\t"

  140.             "pmullw %0, %%mm0\n\t"

  141.             "pmullw %0, %%mm2\n\t"

  142.             "pmullw %%mm5, %%mm1\n\t"

  143.             "pmullw %%mm5, %%mm3\n\t"

  144.             "paddw %%mm1, %%mm2\n\t"

  145.             "paddw %%mm0, %%mm3\n\t"

  146.             : : "m" (AA));

  147. 

  148.         __asm__ volatile(

  149.             /* [mm2,mm3] += C * src[0..7] */

  150.             "movq %0, %%mm0\n\t"

  151.             "movq %%mm0, %%mm1\n\t"

  152.             "punpcklbw %%mm7, %%mm0\n\t"

  153.             "punpckhbw %%mm7, %%mm1\n\t"

  154.             "pmullw %%mm6, %%mm0\n\t"

  155.             "pmullw %%mm6, %%mm1\n\t"

  156.             "paddw %%mm0, %%mm2\n\t"

  157.             "paddw %%mm1, %%mm3\n\t"

  158.             : : "m" (src[0]));

  159. 

  160.         __asm__ volatile(

  161.             /* [mm2,mm3] += D * src[1..8] */

  162.             "movq %1, %%mm1\n\t"

  163.             "movq %%mm1, %%mm0\n\t"

  164.             "movq %%mm1, %%mm4\n\t"

  165.             "punpcklbw %%mm7, %%mm0\n\t"

  166.             "punpckhbw %%mm7, %%mm4\n\t"

  167.             "pmullw %2, %%mm0\n\t"

  168.             "pmullw %2, %%mm4\n\t"

  169.             "paddw %%mm0, %%mm2\n\t"

  170.             "paddw %%mm4, %%mm3\n\t"

  171.             "movq %0, %%mm0\n\t"

  172.             : : "m" (src[0]), "m" (src[1]), "m" (DD));

  173. 

  174.         __asm__ volatile(

  175.             /* dst[0..7] = ([mm2,mm3] + 32) >> 6 */

  176.             "paddw %1, %%mm2\n\t"

  177.             "paddw %1, %%mm3\n\t"

  178.             "psrlw $6, %%mm2\n\t"

  179.             "psrlw $6, %%mm3\n\t"

  180.             "packuswb %%mm3, %%mm2\n\t"

  181.             H264_CHROMA_OP(%0, %%mm2)

  182.             "movq %%mm2, %0\n\t"

  183.             : "=m" (dst[0]) : "m" (*rnd_reg));

  184.         dst+= stride;

  185.     }

  186. }

  187. 

  188. static void H264_CHROMA_MC4_TMPL(uint8_t *dst/*align 4*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y)

  189. {

  190.     __asm__ volatile(

  191.         "pxor   %%mm7, %%mm7        \n\t"

  192.         "movd %5, %%mm2             \n\t"

  193.         "movd %6, %%mm3             \n\t"

  194.         "movq "MANGLE(ff_pw_8)", %%mm4\n\t"

  195.         "movq "MANGLE(ff_pw_8)", %%mm5\n\t"

  196.         "punpcklwd %%mm2, %%mm2     \n\t"

  197.         "punpcklwd %%mm3, %%mm3     \n\t"

  198.         "punpcklwd %%mm2, %%mm2     \n\t"

  199.         "punpcklwd %%mm3, %%mm3     \n\t"

  200.         "psubw %%mm2, %%mm4         \n\t"

  201.         "psubw %%mm3, %%mm5         \n\t"

  202. 

  203.         "movd  (%1), %%mm0          \n\t"

  204.         "movd 1(%1), %%mm6          \n\t"

  205.         "add %3, %1                 \n\t"

  206.         "punpcklbw %%mm7, %%mm0     \n\t"

  207.         "punpcklbw %%mm7, %%mm6     \n\t"

  208.         "pmullw %%mm4, %%mm0        \n\t"

  209.         "pmullw %%mm2, %%mm6        \n\t"

  210.         "paddw %%mm0, %%mm6         \n\t"

  211. 

  212.         "1:                         \n\t"

  213.         "movd  (%1), %%mm0          \n\t"

  214.         "movd 1(%1), %%mm1          \n\t"

  215.         "add %3, %1                 \n\t"

  216.         "punpcklbw %%mm7, %%mm0     \n\t"

  217.         "punpcklbw %%mm7, %%mm1     \n\t"

  218.         "pmullw %%mm4, %%mm0        \n\t"

  219.         "pmullw %%mm2, %%mm1        \n\t"

  220.         "paddw %%mm0, %%mm1         \n\t"

  221.         "movq %%mm1, %%mm0          \n\t"

  222.         "pmullw %%mm5, %%mm6        \n\t"

  223.         "pmullw %%mm3, %%mm1        \n\t"

  224.         "paddw %4, %%mm6            \n\t"

  225.         "paddw %%mm6, %%mm1         \n\t"

  226.         "psrlw $6, %%mm1            \n\t"

  227.         "packuswb %%mm1, %%mm1      \n\t"

  228.         H264_CHROMA_OP4((%0), %%mm1, %%mm6)

  229.         "movd %%mm1, (%0)           \n\t"

  230.         "add %3, %0                 \n\t"

  231.         "movd  (%1), %%mm6          \n\t"

  232.         "movd 1(%1), %%mm1          \n\t"

  233.         "add %3, %1                 \n\t"

  234.         "punpcklbw %%mm7, %%mm6     \n\t"

  235.         "punpcklbw %%mm7, %%mm1     \n\t"

  236.         "pmullw %%mm4, %%mm6        \n\t"

  237.         "pmullw %%mm2, %%mm1        \n\t"

  238.         "paddw %%mm6, %%mm1         \n\t"

  239.         "movq %%mm1, %%mm6          \n\t"

  240.         "pmullw %%mm5, %%mm0        \n\t"

  241.         "pmullw %%mm3, %%mm1        \n\t"

  242.         "paddw %4, %%mm0            \n\t"

  243.         "paddw %%mm0, %%mm1         \n\t"

  244.         "psrlw $6, %%mm1            \n\t"

  245.         "packuswb %%mm1, %%mm1      \n\t"

  246.         H264_CHROMA_OP4((%0), %%mm1, %%mm0)

  247.         "movd %%mm1, (%0)           \n\t"

  248.         "add %3, %0                 \n\t"

  249.         "sub $2, %2                 \n\t"

  250.         "jnz 1b                     \n\t"

  251.         : "+r"(dst), "+r"(src), "+r"(h)

  252.         : "r"((x86_reg)stride), "m"(ff_pw_32), "m"(x), "m"(y)

  253.     );

  254. }

  255. 

  256. #ifdef H264_CHROMA_MC2_TMPL

  257. static void H264_CHROMA_MC2_TMPL(uint8_t *dst/*align 2*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y)

  258. {

  259.     int tmp = ((1<<16)-1)*x + 8;

  260.     int CD= tmp*y;

  261.     int AB= (tmp<<3) - CD;

  262.     __asm__ volatile(

  263.         /* mm5 = {A,B,A,B} */

  264.         /* mm6 = {C,D,C,D} */

  265.         "movd %0, %%mm5\n\t"

  266.         "movd %1, %%mm6\n\t"

  267.         "punpckldq %%mm5, %%mm5\n\t"

  268.         "punpckldq %%mm6, %%mm6\n\t"

  269.         "pxor %%mm7, %%mm7\n\t"

  270.         /* mm0 = src[0,1,1,2] */

  271.         "movd %2, %%mm2\n\t"

  272.         "punpcklbw %%mm7, %%mm2\n\t"

  273.         "pshufw $0x94, %%mm2, %%mm2\n\t"

  274.         :: "r"(AB), "r"(CD), "m"(src[0]));

  275. 

  276. 

  277.     __asm__ volatile(

  278.         "1:\n\t"

  279.         "add %4, %1\n\t"

  280.         /* mm1 = A * src[0,1] + B * src[1,2] */

  281.         "movq    %%mm2, %%mm1\n\t"

  282.         "pmaddwd %%mm5, %%mm1\n\t"

  283.         /* mm0 = src[0,1,1,2] */

  284.         "movd (%1), %%mm0\n\t"

  285.         "punpcklbw %%mm7, %%mm0\n\t"

  286.         "pshufw $0x94, %%mm0, %%mm0\n\t"

  287.         /* mm1 += C * src[0,1] + D * src[1,2] */

  288.         "movq    %%mm0, %%mm2\n\t"

  289.         "pmaddwd %%mm6, %%mm0\n\t"

  290.         "paddw      %3, %%mm1\n\t"

  291.         "paddw   %%mm0, %%mm1\n\t"

  292.         /* dst[0,1] = pack((mm1 + 32) >> 6) */

  293.         "psrlw $6, %%mm1\n\t"

  294.         "packssdw %%mm7, %%mm1\n\t"

  295.         "packuswb %%mm7, %%mm1\n\t"

  296.         H264_CHROMA_OP4((%0), %%mm1, %%mm3)

  297.         "movd %%mm1, %%esi\n\t"

  298.         "movw %%si, (%0)\n\t"

  299.         "add %4, %0\n\t"

  300.         "sub $1, %2\n\t"

  301.         "jnz 1b\n\t"

  302.         : "+r" (dst), "+r"(src), "+r"(h)

  303.         : "m" (ff_pw_32), "r"((x86_reg)stride)

  304.         : "%esi");

  305. 

  306. }

  307. #endif