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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 Libav.

  9.  *

  10.  * Libav 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.  * Libav 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 Libav; 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/internal.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= -(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_mmx2(uint8_t *blk1, uint8_t *blk2, int stride, int h)

  78. {

  79.     __asm__ volatile(

  80.         ".p2align 4                     \n\t"

  81.         "1:                             \n\t"

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

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

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

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

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

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

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

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

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

  91.         " jg 1b                         \n\t"

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

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

  94.     );

  95. }

  96. 

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

  98. {

  99.     int ret;

  100.     __asm__ volatile(

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

  102.         ".p2align 4                     \n\t"

  103.         "1:                             \n\t"

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

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

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

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

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

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

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

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

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

  113.         " jg 1b                         \n\t"

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

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

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

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

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

  119.     );

  120.     return ret;

  121. }

  122. 

  123. static inline void sad8_x2a_mmx2(uint8_t *blk1, uint8_t *blk2, int stride, int h)

  124. {

  125.     __asm__ volatile(

  126.         ".p2align 4                     \n\t"

  127.         "1:                             \n\t"

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

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

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

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

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

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

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

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

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

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

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

  139.         " jg 1b                         \n\t"

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

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

  142.     );

  143. }

  144. 

  145. static inline void sad8_y2a_mmx2(uint8_t *blk1, uint8_t *blk2, int stride, int h)

  146. {

  147.     __asm__ volatile(

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

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

  150.         ".p2align 4                     \n\t"

  151.         "1:                             \n\t"

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

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

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

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

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

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

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

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

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

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

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

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

  164.         " jg 1b                         \n\t"

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

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

  167.     );

  168. }

  169. 

  170. static inline void sad8_4_mmx2(uint8_t *blk1, uint8_t *blk2, int stride, int h)

  171. {

  172.     __asm__ volatile(

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

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

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

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

  177.         ".p2align 4                     \n\t"

  178.         "1:                             \n\t"

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  194.         " jg 1b                         \n\t"

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

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

  197.     );

  198. }

  199. 

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

  201. {

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

  203.     __asm__ volatile(

  204.         ".p2align 4                     \n\t"

  205.         "1:                             \n\t"

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  232.         " js 1b                         \n\t"

  233.         : "+a" (len)

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

  235.     );

  236. }

  237. 

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

  239. {

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

  241.     __asm__ volatile(

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

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

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

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

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

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

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

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

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

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

  252.         ".p2align 4                     \n\t"

  253.         "1:                             \n\t"

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  285.         " js 1b                         \n\t"

  286.         : "+a" (len)

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

  288.     );

  289. }

  290. 

  291. static inline int sum_mmx(void)

  292. {

  293.     int ret;

  294.     __asm__ volatile(

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

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

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

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

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

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

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

  302.         : "=r" (ret)

  303.     );

  304.     return ret&0xFFFF;

  305. }

  306. 

  307. static inline int sum_mmx2(void)

  308. {

  309.     int ret;

  310.     __asm__ volatile(

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

  312.         : "=r" (ret)

  313.     );

  314.     return ret;

  315. }

  316. 

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

  318. {

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

  320. }

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

  322. {

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

  324. }

  325. 

  326. 

  327. #define PIX_SAD(suf)\

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

  329. {\

  330.     assert(h==8);\

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

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

  333. \

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

  335. \

  336.     return sum_ ## suf();\

  337. }\

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

  339. {\

  340.     assert(h==8);\

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

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

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

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

  345.                  );\

  346. \

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

  348. \

  349.     return sum_ ## suf();\

  350. }\

  351. \

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

  353. {\

  354.     assert(h==8);\

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

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

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

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

  359.                  );\

  360. \

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

  362. \

  363.     return sum_ ## suf();\

  364. }\

  365. \

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

  367. {\

  368.     assert(h==8);\

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

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

  371.                  ::);\

  372. \

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

  374. \

  375.     return sum_ ## suf();\

  376. }\

  377. \

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

  379. {\

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

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

  382. \

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

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

  385. \

  386.     return sum_ ## suf();\

  387. }\

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

  389. {\

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

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

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

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

  394.                  );\

  395. \

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

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

  398. \

  399.     return sum_ ## suf();\

  400. }\

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

  402. {\

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

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

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

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

  407.                  );\

  408. \

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

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

  411. \

  412.     return sum_ ## suf();\

  413. }\

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

  415. {\

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

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

  418.                  ::);\

  419. \

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

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

  422. \

  423.     return sum_ ## suf();\

  424. }\

  425. 

  426. PIX_SAD(mmx)

  427. PIX_SAD(mmx2)

  428. 

  429. #endif /* HAVE_INLINE_ASM */

  430. 

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

  432. {

  433. #if HAVE_INLINE_ASM

  434.     int mm_flags = av_get_cpu_flags();

  435. 

  436.     if (mm_flags & AV_CPU_FLAG_MMX) {

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

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

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

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

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

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

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

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

  445. 

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

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

  448.     }

  449.     if (mm_flags & AV_CPU_FLAG_MMXEXT) {

  450.         c->pix_abs[0][0] = sad16_mmx2;

  451.         c->pix_abs[1][0] = sad8_mmx2;

  452. 

  453.         c->sad[0]= sad16_mmx2;

  454.         c->sad[1]= sad8_mmx2;

  455. 

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

  457.             c->pix_abs[0][1] = sad16_x2_mmx2;

  458.             c->pix_abs[0][2] = sad16_y2_mmx2;

  459.             c->pix_abs[0][3] = sad16_xy2_mmx2;

  460.             c->pix_abs[1][1] = sad8_x2_mmx2;

  461.             c->pix_abs[1][2] = sad8_y2_mmx2;

  462.             c->pix_abs[1][3] = sad8_xy2_mmx2;

  463.         }

  464.     }

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

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

  467.     }

  468. #endif /* HAVE_INLINE_ASM */

  469. }