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FFmpeg/libavcodec/x86/motion_est.c

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  1. /*

  2.  * MMX optimized motion estimation

  3.  * Copyright (c) 2001 Fabrice Bellard

  4.  * Copyright (c) 2002-2004 Michael Niedermayer

  5.  *

  6.  * mostly by Michael Niedermayer <michaelni@gmx.at>

  7.  *

  8.  * This file is part of FFmpeg.

  9.  *

  10.  * FFmpeg is free software; you can redistribute it and/or

  11.  * modify it under the terms of the GNU Lesser General Public

  12.  * License as published by the Free Software Foundation; either

  13.  * version 2.1 of the License, or (at your option) any later version.

  14.  *

  15.  * FFmpeg is distributed in the hope that it will be useful,

  16.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  17.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  18.  * Lesser General Public License for more details.

  19.  *

  20.  * You should have received a copy of the GNU Lesser General Public

  21.  * License along with FFmpeg; if not, write to the Free Software

  22.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  23.  */

  24. 

  25. #include "libavutil/avassert.h"

  26. #include "libavutil/mem.h"

  27. #include "libavutil/x86/asm.h"

  28. #include "libavcodec/dsputil.h"

  29. #include "dsputil_mmx.h"

  30. 

  31. #if HAVE_INLINE_ASM

  32. 

  33. DECLARE_ASM_CONST(8, uint64_t, round_tab)[3]={

  34. 0x0000000000000000ULL,

  35. 0x0001000100010001ULL,

  36. 0x0002000200020002ULL,

  37. };

  38. 

  39. DECLARE_ASM_CONST(8, uint64_t, bone)= 0x0101010101010101LL;

  40. 

  41. static inline void sad8_1_mmx(uint8_t *blk1, uint8_t *blk2, int stride, int h)

  42. {

  43.     x86_reg len= -(x86_reg)stride*h;

  44.     __asm__ volatile(

  45.         ".p2align 4                     \n\t"

  46.         "1:                             \n\t"

  47.         "movq (%1, %%"REG_a"), %%mm0    \n\t"

  48.         "movq (%2, %%"REG_a"), %%mm2    \n\t"

  49.         "movq (%2, %%"REG_a"), %%mm4    \n\t"

  50.         "add %3, %%"REG_a"              \n\t"

  51.         "psubusb %%mm0, %%mm2           \n\t"

  52.         "psubusb %%mm4, %%mm0           \n\t"

  53.         "movq (%1, %%"REG_a"), %%mm1    \n\t"

  54.         "movq (%2, %%"REG_a"), %%mm3    \n\t"

  55.         "movq (%2, %%"REG_a"), %%mm5    \n\t"

  56.         "psubusb %%mm1, %%mm3           \n\t"

  57.         "psubusb %%mm5, %%mm1           \n\t"

  58.         "por %%mm2, %%mm0               \n\t"

  59.         "por %%mm1, %%mm3               \n\t"

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

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

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

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

  64.         "punpcklbw %%mm7, %%mm3         \n\t"

  65.         "punpckhbw %%mm7, %%mm2         \n\t"

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

  67.         "paddw %%mm3, %%mm2             \n\t"

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

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

  70.         "add %3, %%"REG_a"              \n\t"

  71.         " js 1b                         \n\t"

  72.         : "+a" (len)

  73.         : "r" (blk1 - len), "r" (blk2 - len), "r" ((x86_reg)stride)

  74.     );

  75. }

  76. 

  77. static inline void sad8_1_mmxext(uint8_t *blk1, uint8_t *blk2,

  78.                                  int stride, int h)

  79. {

  80.     __asm__ volatile(

  81.         ".p2align 4                     \n\t"

  82.         "1:                             \n\t"

  83.         "movq (%1), %%mm0               \n\t"

  84.         "movq (%1, %3), %%mm1           \n\t"

  85.         "psadbw (%2), %%mm0             \n\t"

  86.         "psadbw (%2, %3), %%mm1         \n\t"

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

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

  89.         "lea (%1,%3,2), %1              \n\t"

  90.         "lea (%2,%3,2), %2              \n\t"

  91.         "sub $2, %0                     \n\t"

  92.         " jg 1b                         \n\t"

  93.         : "+r" (h), "+r" (blk1), "+r" (blk2)

  94.         : "r" ((x86_reg)stride)

  95.     );

  96. }

  97. 

  98. static int sad16_sse2(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)

  99. {

  100.     int ret;

  101.     __asm__ volatile(

  102.         "pxor %%xmm2, %%xmm2            \n\t"

  103.         ".p2align 4                     \n\t"

  104.         "1:                             \n\t"

  105.         "movdqu (%1), %%xmm0            \n\t"

  106.         "movdqu (%1, %4), %%xmm1        \n\t"

  107.         "psadbw (%2), %%xmm0            \n\t"

  108.         "psadbw (%2, %4), %%xmm1        \n\t"

  109.         "paddw %%xmm0, %%xmm2           \n\t"

  110.         "paddw %%xmm1, %%xmm2           \n\t"

  111.         "lea (%1,%4,2), %1              \n\t"

  112.         "lea (%2,%4,2), %2              \n\t"

  113.         "sub $2, %0                     \n\t"

  114.         " jg 1b                         \n\t"

  115.         "movhlps %%xmm2, %%xmm0         \n\t"

  116.         "paddw   %%xmm0, %%xmm2         \n\t"

  117.         "movd    %%xmm2, %3             \n\t"

  118.         : "+r" (h), "+r" (blk1), "+r" (blk2), "=r"(ret)

  119.         : "r" ((x86_reg)stride)

  120.     );

  121.     return ret;

  122. }

  123. 

  124. static inline void sad8_x2a_mmxext(uint8_t *blk1, uint8_t *blk2,

  125.                                    int stride, int h)

  126. {

  127.     __asm__ volatile(

  128.         ".p2align 4                     \n\t"

  129.         "1:                             \n\t"

  130.         "movq (%1), %%mm0               \n\t"

  131.         "movq (%1, %3), %%mm1           \n\t"

  132.         "pavgb 1(%1), %%mm0             \n\t"

  133.         "pavgb 1(%1, %3), %%mm1         \n\t"

  134.         "psadbw (%2), %%mm0             \n\t"

  135.         "psadbw (%2, %3), %%mm1         \n\t"

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

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

  138.         "lea (%1,%3,2), %1              \n\t"

  139.         "lea (%2,%3,2), %2              \n\t"

  140.         "sub $2, %0                     \n\t"

  141.         " jg 1b                         \n\t"

  142.         : "+r" (h), "+r" (blk1), "+r" (blk2)

  143.         : "r" ((x86_reg)stride)

  144.     );

  145. }

  146. 

  147. static inline void sad8_y2a_mmxext(uint8_t *blk1, uint8_t *blk2,

  148.                                    int stride, int h)

  149. {

  150.     __asm__ volatile(

  151.         "movq (%1), %%mm0               \n\t"

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

  153.         ".p2align 4                     \n\t"

  154.         "1:                             \n\t"

  155.         "movq (%1), %%mm1               \n\t"

  156.         "movq (%1, %3), %%mm2           \n\t"

  157.         "pavgb %%mm1, %%mm0             \n\t"

  158.         "pavgb %%mm2, %%mm1             \n\t"

  159.         "psadbw (%2), %%mm0             \n\t"

  160.         "psadbw (%2, %3), %%mm1         \n\t"

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

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

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

  164.         "lea (%1,%3,2), %1              \n\t"

  165.         "lea (%2,%3,2), %2              \n\t"

  166.         "sub $2, %0                     \n\t"

  167.         " jg 1b                         \n\t"

  168.         : "+r" (h), "+r" (blk1), "+r" (blk2)

  169.         : "r" ((x86_reg)stride)

  170.     );

  171. }

  172. 

  173. static inline void sad8_4_mmxext(uint8_t *blk1, uint8_t *blk2,

  174.                                  int stride, int h)

  175. {

  176.     __asm__ volatile(

  177.         "movq "MANGLE(bone)", %%mm5     \n\t"

  178.         "movq (%1), %%mm0               \n\t"

  179.         "pavgb 1(%1), %%mm0             \n\t"

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

  181.         ".p2align 4                     \n\t"

  182.         "1:                             \n\t"

  183.         "movq (%1), %%mm1               \n\t"

  184.         "movq (%1,%3), %%mm2            \n\t"

  185.         "pavgb 1(%1), %%mm1             \n\t"

  186.         "pavgb 1(%1,%3), %%mm2          \n\t"

  187.         "psubusb %%mm5, %%mm1           \n\t"

  188.         "pavgb %%mm1, %%mm0             \n\t"

  189.         "pavgb %%mm2, %%mm1             \n\t"

  190.         "psadbw (%2), %%mm0             \n\t"

  191.         "psadbw (%2,%3), %%mm1          \n\t"

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

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

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

  195.         "lea (%1,%3,2), %1              \n\t"

  196.         "lea (%2,%3,2), %2              \n\t"

  197.         "sub $2, %0                     \n\t"

  198.         " jg 1b                         \n\t"

  199.         : "+r" (h), "+r" (blk1), "+r" (blk2)

  200.         : "r" ((x86_reg)stride)

  201.     );

  202. }

  203. 

  204. static inline void sad8_2_mmx(uint8_t *blk1a, uint8_t *blk1b, uint8_t *blk2, int stride, int h)

  205. {

  206.     x86_reg len= -(x86_reg)stride*h;

  207.     __asm__ volatile(

  208.         ".p2align 4                     \n\t"

  209.         "1:                             \n\t"

  210.         "movq (%1, %%"REG_a"), %%mm0    \n\t"

  211.         "movq (%2, %%"REG_a"), %%mm1    \n\t"

  212.         "movq (%1, %%"REG_a"), %%mm2    \n\t"

  213.         "movq (%2, %%"REG_a"), %%mm3    \n\t"

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

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

  216.         "punpckhbw %%mm7, %%mm2         \n\t"

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

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

  219.         "paddw %%mm2, %%mm3             \n\t"

  220.         "movq (%3, %%"REG_a"), %%mm4    \n\t"

  221.         "movq (%3, %%"REG_a"), %%mm2    \n\t"

  222.         "paddw %%mm5, %%mm1             \n\t"

  223.         "paddw %%mm5, %%mm3             \n\t"

  224.         "psrlw $1, %%mm1                \n\t"

  225.         "psrlw $1, %%mm3                \n\t"

  226.         "packuswb %%mm3, %%mm1          \n\t"

  227.         "psubusb %%mm1, %%mm4           \n\t"

  228.         "psubusb %%mm2, %%mm1           \n\t"

  229.         "por %%mm4, %%mm1               \n\t"

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

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

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

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

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

  235.         "add %4, %%"REG_a"              \n\t"

  236.         " js 1b                         \n\t"

  237.         : "+a" (len)

  238.         : "r" (blk1a - len), "r" (blk1b -len), "r" (blk2 - len), "r" ((x86_reg)stride)

  239.     );

  240. }

  241. 

  242. static inline void sad8_4_mmx(uint8_t *blk1, uint8_t *blk2, int stride, int h)

  243. {

  244.     x86_reg len= -(x86_reg)stride*h;

  245.     __asm__ volatile(

  246.         "movq (%1, %%"REG_a"), %%mm0    \n\t"

  247.         "movq 1(%1, %%"REG_a"), %%mm2   \n\t"

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

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

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

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

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

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

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

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

  256.         ".p2align 4                     \n\t"

  257.         "1:                             \n\t"

  258.         "movq (%2, %%"REG_a"), %%mm2    \n\t"

  259.         "movq 1(%2, %%"REG_a"), %%mm4   \n\t"

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

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

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

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

  264.         "punpcklbw %%mm7, %%mm4         \n\t"

  265.         "punpckhbw %%mm7, %%mm5         \n\t"

  266.         "paddw %%mm4, %%mm2             \n\t"

  267.         "paddw %%mm5, %%mm3             \n\t"

  268.         "movq 16+"MANGLE(round_tab)", %%mm5 \n\t"

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

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

  271.         "paddw %%mm5, %%mm0             \n\t"

  272.         "paddw %%mm5, %%mm1             \n\t"

  273.         "movq (%3, %%"REG_a"), %%mm4    \n\t"

  274.         "movq (%3, %%"REG_a"), %%mm5    \n\t"

  275.         "psrlw $2, %%mm0                \n\t"

  276.         "psrlw $2, %%mm1                \n\t"

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

  278.         "psubusb %%mm0, %%mm4           \n\t"

  279.         "psubusb %%mm5, %%mm0           \n\t"

  280.         "por %%mm4, %%mm0               \n\t"

  281.         "movq %%mm0, %%mm4              \n\t"

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

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

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

  285.         "paddw %%mm4, %%mm6             \n\t"

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

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

  288.         "add %4, %%"REG_a"              \n\t"

  289.         " js 1b                         \n\t"

  290.         : "+a" (len)

  291.         : "r" (blk1 - len), "r" (blk1 -len + stride), "r" (blk2 - len), "r" ((x86_reg)stride)

  292.     );

  293. }

  294. 

  295. static inline int sum_mmx(void)

  296. {

  297.     int ret;

  298.     __asm__ volatile(

  299.         "movq %%mm6, %%mm0              \n\t"

  300.         "psrlq $32, %%mm6               \n\t"

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

  302.         "movq %%mm6, %%mm0              \n\t"

  303.         "psrlq $16, %%mm6               \n\t"

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

  305.         "movd %%mm6, %0                 \n\t"

  306.         : "=r" (ret)

  307.     );

  308.     return ret&0xFFFF;

  309. }

  310. 

  311. static inline int sum_mmxext(void)

  312. {

  313.     int ret;

  314.     __asm__ volatile(

  315.         "movd %%mm6, %0                 \n\t"

  316.         : "=r" (ret)

  317.     );

  318.     return ret;

  319. }

  320. 

  321. static inline void sad8_x2a_mmx(uint8_t *blk1, uint8_t *blk2, int stride, int h)

  322. {

  323.     sad8_2_mmx(blk1, blk1+1, blk2, stride, h);

  324. }

  325. static inline void sad8_y2a_mmx(uint8_t *blk1, uint8_t *blk2, int stride, int h)

  326. {

  327.     sad8_2_mmx(blk1, blk1+stride, blk2, stride, h);

  328. }

  329. 

  330. 

  331. #define PIX_SAD(suf)\

  332. static int sad8_ ## suf(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)\

  333. {\

  334.     av_assert2(h==8);\

  335.     __asm__ volatile("pxor %%mm7, %%mm7     \n\t"\

  336.                  "pxor %%mm6, %%mm6     \n\t":);\

  337. \

  338.     sad8_1_ ## suf(blk1, blk2, stride, 8);\

  339. \

  340.     return sum_ ## suf();\

  341. }\

  342. static int sad8_x2_ ## suf(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)\

  343. {\

  344.     av_assert2(h==8);\

  345.     __asm__ volatile("pxor %%mm7, %%mm7     \n\t"\

  346.                  "pxor %%mm6, %%mm6     \n\t"\

  347.                  "movq %0, %%mm5        \n\t"\

  348.                  :: "m"(round_tab[1]) \

  349.                  );\

  350. \

  351.     sad8_x2a_ ## suf(blk1, blk2, stride, 8);\

  352. \

  353.     return sum_ ## suf();\

  354. }\

  355. \

  356. static int sad8_y2_ ## suf(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)\

  357. {\

  358.     av_assert2(h==8);\

  359.     __asm__ volatile("pxor %%mm7, %%mm7     \n\t"\

  360.                  "pxor %%mm6, %%mm6     \n\t"\

  361.                  "movq %0, %%mm5        \n\t"\

  362.                  :: "m"(round_tab[1]) \

  363.                  );\

  364. \

  365.     sad8_y2a_ ## suf(blk1, blk2, stride, 8);\

  366. \

  367.     return sum_ ## suf();\

  368. }\

  369. \

  370. static int sad8_xy2_ ## suf(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)\

  371. {\

  372.     av_assert2(h==8);\

  373.     __asm__ volatile("pxor %%mm7, %%mm7     \n\t"\

  374.                  "pxor %%mm6, %%mm6     \n\t"\

  375.                  ::);\

  376. \

  377.     sad8_4_ ## suf(blk1, blk2, stride, 8);\

  378. \

  379.     return sum_ ## suf();\

  380. }\

  381. \

  382. static int sad16_ ## suf(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)\

  383. {\

  384.     __asm__ volatile("pxor %%mm7, %%mm7     \n\t"\

  385.                  "pxor %%mm6, %%mm6     \n\t":);\

  386. \

  387.     sad8_1_ ## suf(blk1  , blk2  , stride, h);\

  388.     sad8_1_ ## suf(blk1+8, blk2+8, stride, h);\

  389. \

  390.     return sum_ ## suf();\

  391. }\

  392. static int sad16_x2_ ## suf(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)\

  393. {\

  394.     __asm__ volatile("pxor %%mm7, %%mm7     \n\t"\

  395.                  "pxor %%mm6, %%mm6     \n\t"\

  396.                  "movq %0, %%mm5        \n\t"\

  397.                  :: "m"(round_tab[1]) \

  398.                  );\

  399. \

  400.     sad8_x2a_ ## suf(blk1  , blk2  , stride, h);\

  401.     sad8_x2a_ ## suf(blk1+8, blk2+8, stride, h);\

  402. \

  403.     return sum_ ## suf();\

  404. }\

  405. static int sad16_y2_ ## suf(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)\

  406. {\

  407.     __asm__ volatile("pxor %%mm7, %%mm7     \n\t"\

  408.                  "pxor %%mm6, %%mm6     \n\t"\

  409.                  "movq %0, %%mm5        \n\t"\

  410.                  :: "m"(round_tab[1]) \

  411.                  );\

  412. \

  413.     sad8_y2a_ ## suf(blk1  , blk2  , stride, h);\

  414.     sad8_y2a_ ## suf(blk1+8, blk2+8, stride, h);\

  415. \

  416.     return sum_ ## suf();\

  417. }\

  418. static int sad16_xy2_ ## suf(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)\

  419. {\

  420.     __asm__ volatile("pxor %%mm7, %%mm7     \n\t"\

  421.                  "pxor %%mm6, %%mm6     \n\t"\

  422.                  ::);\

  423. \

  424.     sad8_4_ ## suf(blk1  , blk2  , stride, h);\

  425.     sad8_4_ ## suf(blk1+8, blk2+8, stride, h);\

  426. \

  427.     return sum_ ## suf();\

  428. }\

  429. 

  430. PIX_SAD(mmx)

  431. PIX_SAD(mmxext)

  432. 

  433. #endif /* HAVE_INLINE_ASM */

  434. 

  435. void ff_dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx)

  436. {

  437. #if HAVE_INLINE_ASM

  438.     int mm_flags = av_get_cpu_flags();

  439. 

  440.     if (mm_flags & AV_CPU_FLAG_MMX) {

  441.         c->pix_abs[0][0] = sad16_mmx;

  442.         c->pix_abs[0][1] = sad16_x2_mmx;

  443.         c->pix_abs[0][2] = sad16_y2_mmx;

  444.         c->pix_abs[0][3] = sad16_xy2_mmx;

  445.         c->pix_abs[1][0] = sad8_mmx;

  446.         c->pix_abs[1][1] = sad8_x2_mmx;

  447.         c->pix_abs[1][2] = sad8_y2_mmx;

  448.         c->pix_abs[1][3] = sad8_xy2_mmx;

  449. 

  450.         c->sad[0]= sad16_mmx;

  451.         c->sad[1]= sad8_mmx;

  452.     }

  453.     if (mm_flags & AV_CPU_FLAG_MMXEXT) {

  454.         c->pix_abs[0][0] = sad16_mmxext;

  455.         c->pix_abs[1][0] = sad8_mmxext;

  456. 

  457.         c->sad[0]        = sad16_mmxext;

  458.         c->sad[1]        = sad8_mmxext;

  459. 

  460.         if(!(avctx->flags & CODEC_FLAG_BITEXACT)){

  461.             c->pix_abs[0][1] = sad16_x2_mmxext;

  462.             c->pix_abs[0][2] = sad16_y2_mmxext;

  463.             c->pix_abs[0][3] = sad16_xy2_mmxext;

  464.             c->pix_abs[1][1] = sad8_x2_mmxext;

  465.             c->pix_abs[1][2] = sad8_y2_mmxext;

  466.             c->pix_abs[1][3] = sad8_xy2_mmxext;

  467.         }

  468.     }

  469.     if ((mm_flags & AV_CPU_FLAG_SSE2) && !(mm_flags & AV_CPU_FLAG_3DNOW) && avctx->codec_id != AV_CODEC_ID_SNOW) {

  470.         c->sad[0]= sad16_sse2;

  471.     }

  472. #endif /* HAVE_INLINE_ASM */

  473. }