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FFmpeg/libavcodec/i386/motion_est_mmx.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.  * This library is free software; you can redistribute it and/or

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

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

  9.  * version 2 of the License, or (at your option) any later version.

  10.  *

  11.  * This library is distributed in the hope that it will be useful,

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

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

  14.  * Lesser General Public License for more details.

  15.  *

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

  17.  * License along with this library; if not, write to the Free Software

  18.  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

  19.  *

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

  21.  */

  22. #include "../dsputil.h"

  23. 

  24. static const __attribute__ ((aligned(8))) uint64_t round_tab[3]={

  25. 0x0000000000000000ULL,

  26. 0x0001000100010001ULL,

  27. 0x0002000200020002ULL,

  28. };

  29. 

  30. static attribute_used __attribute__ ((aligned(8))) uint64_t bone= 0x0101010101010101LL;

  31. 

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

  33. {

  34.     int len= -(stride*h);

  35.     asm volatile(

  36.         ".balign 16			\n\t"

  37.         "1:				\n\t"

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

  39.         "movq (%2, %%eax), %%mm2	\n\t"

  40.         "movq (%2, %%eax), %%mm4	\n\t"

  41.         "addl %3, %%eax			\n\t"

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

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

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

  45.         "movq (%2, %%eax), %%mm3	\n\t"

  46.         "movq (%2, %%eax), %%mm5	\n\t"

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  61.         "addl %3, %%eax			\n\t"

  62.         " js 1b				\n\t"

  63.         : "+a" (len)

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

  65.     );

  66. }

  67. 

  68. static inline void sad8_1_mmx2(uint8_t *blk1, uint8_t *blk2, int stride, int h)

  69. {

  70.     int len= -(stride*h);

  71.     asm volatile(

  72.         ".balign 16			\n\t"

  73.         "1:				\n\t"

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

  75.         "movq (%2, %%eax), %%mm2	\n\t"

  76.         "psadbw %%mm2, %%mm0		\n\t"

  77.         "addl %3, %%eax			\n\t"

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

  79.         "movq (%2, %%eax), %%mm3	\n\t"

  80.         "psadbw %%mm1, %%mm3		\n\t"

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

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

  83.         "addl %3, %%eax			\n\t"

  84.         " js 1b				\n\t"

  85.         : "+a" (len)

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

  87.     );

  88. }

  89. 

  90. static inline void sad8_2_mmx2(uint8_t *blk1a, uint8_t *blk1b, uint8_t *blk2, int stride, int h)

  91. {

  92.     int len= -(stride*h);

  93.     asm volatile(

  94.         ".balign 16			\n\t"

  95.         "1:				\n\t"

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

  97.         "movq (%2, %%eax), %%mm2	\n\t"

  98.         "pavgb %%mm2, %%mm0		\n\t"

  99.         "movq (%3, %%eax), %%mm2	\n\t"

  100.         "psadbw %%mm2, %%mm0		\n\t"

  101.         "addl %4, %%eax			\n\t"

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

  103.         "movq (%2, %%eax), %%mm3	\n\t"

  104.         "pavgb %%mm1, %%mm3		\n\t"

  105.         "movq (%3, %%eax), %%mm1	\n\t"

  106.         "psadbw %%mm1, %%mm3		\n\t"

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

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

  109.         "addl %4, %%eax			\n\t"

  110.         " js 1b				\n\t"

  111.         : "+a" (len)

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

  113.     );

  114. }

  115. 

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

  117. { //FIXME reuse src

  118.     int len= -(stride*h);

  119.     asm volatile(

  120.         ".balign 16			\n\t"

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

  122.         "1:				\n\t"

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

  124.         "movq (%2, %%eax), %%mm2	\n\t"

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

  126.         "movq 1(%2, %%eax), %%mm3	\n\t"

  127.         "pavgb %%mm2, %%mm0		\n\t"

  128.         "pavgb %%mm1, %%mm3		\n\t"

  129.         "psubusb %%mm5, %%mm3		\n\t"

  130.         "pavgb %%mm3, %%mm0		\n\t"

  131.         "movq (%3, %%eax), %%mm2	\n\t"

  132.         "psadbw %%mm2, %%mm0		\n\t"

  133.         "addl %4, %%eax			\n\t"

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

  135.         "movq (%2, %%eax), %%mm3	\n\t"

  136.         "movq 1(%1, %%eax), %%mm2	\n\t"

  137.         "movq 1(%2, %%eax), %%mm4	\n\t"

  138.         "pavgb %%mm3, %%mm1		\n\t"

  139.         "pavgb %%mm4, %%mm2		\n\t"

  140.         "psubusb %%mm5, %%mm2		\n\t"

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

  142.         "movq (%3, %%eax), %%mm1	\n\t"

  143.         "psadbw %%mm1, %%mm2		\n\t"

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

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

  146.         "addl %4, %%eax			\n\t"

  147.         " js 1b				\n\t"

  148.         : "+a" (len)

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

  150.     );

  151. }

  152. 

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

  154. {

  155.     int len= -(stride*h);

  156.     asm volatile(

  157.         ".balign 16			\n\t"

  158.         "1:				\n\t"

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

  160.         "movq (%2, %%eax), %%mm1	\n\t"

  161.         "movq (%1, %%eax), %%mm2	\n\t"

  162.         "movq (%2, %%eax), %%mm3	\n\t"

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

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

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

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

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

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

  169.         "movq (%3, %%eax), %%mm4	\n\t"

  170.         "movq (%3, %%eax), %%mm2	\n\t"

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

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

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

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

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

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

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

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

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

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

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

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

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

  184.         "addl %4, %%eax			\n\t"

  185.         " js 1b				\n\t"

  186.         : "+a" (len)

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

  188.     );

  189. }

  190. 

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

  192. {

  193.     int len= -(stride*h);

  194.     asm volatile(

  195.         ".balign 16			\n\t"

  196.         "1:				\n\t"

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

  198.         "movq (%2, %%eax), %%mm1	\n\t"

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

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

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

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

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

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

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

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

  207.         "movq 1(%1, %%eax), %%mm2	\n\t"

  208.         "movq 1(%2, %%eax), %%mm3	\n\t"

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

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

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

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

  213.         "paddw %%mm4, %%mm1		\n\t"

  214.         "movq %%mm3, %%mm4		\n\t"

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

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

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

  218.         "paddw %%mm4, %%mm1		\n\t"

  219.         "movq (%3, %%eax), %%mm3	\n\t"

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

  221.         "paddw %%mm5, %%mm2		\n\t"

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

  223.         "psrlw $2, %%mm2		\n\t"

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

  225.         "packuswb %%mm1, %%mm2		\n\t"

  226.         "psubusb %%mm2, %%mm3		\n\t"

  227.         "psubusb %%mm4, %%mm2		\n\t"

  228.         "por %%mm3, %%mm2		\n\t"

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

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

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

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

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

  234.         "addl %4, %%eax			\n\t"

  235.         " js 1b				\n\t"

  236.         : "+a" (len)

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

  238.     );

  239. }

  240. 

  241. static inline int sum_mmx(void)

  242. {

  243.     int ret;

  244.     asm volatile(

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

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

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

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

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

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

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

  252.         : "=r" (ret)

  253.     );

  254.     return ret&0xFFFF;

  255. }

  256. 

  257. static inline int sum_mmx2(void)

  258. {

  259.     int ret;

  260.     asm volatile(

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

  262.         : "=r" (ret)

  263.     );

  264.     return ret;

  265. }

  266. 

  267. 

  268. #define PIX_SAD(suf)\

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

  270. {\

  271.     assert(h==8);\

  272.     asm volatile("pxor %%mm7, %%mm7		\n\t"\

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

  274. \

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

  276. \

  277.     return sum_ ## suf();\

  278. }\

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

  280. {\

  281.     assert(h==8);\

  282.     asm volatile("pxor %%mm7, %%mm7		\n\t"\

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

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

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

  286.                  );\

  287. \

  288.     sad8_2_ ## suf(blk1, blk1+1, blk2, stride, 8);\

  289. \

  290.     return sum_ ## suf();\

  291. }\

  292. \

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

  294. {\

  295.     assert(h==8);\

  296.     asm volatile("pxor %%mm7, %%mm7		\n\t"\

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

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

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

  300.                  );\

  301. \

  302.     sad8_2_ ## suf(blk1, blk1+stride, blk2, stride, 8);\

  303. \

  304.     return sum_ ## suf();\

  305. }\

  306. \

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

  308. {\

  309.     assert(h==8);\

  310.     asm volatile("pxor %%mm7, %%mm7		\n\t"\

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

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

  313.                  :: "m"(round_tab[2]) \

  314.                  );\

  315. \

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

  317. \

  318.     return sum_ ## suf();\

  319. }\

  320. \

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

  322. {\

  323.     asm volatile("pxor %%mm7, %%mm7		\n\t"\

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

  325. \

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

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

  328. \

  329.     return sum_ ## suf();\

  330. }\

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

  332. {\

  333.     asm volatile("pxor %%mm7, %%mm7		\n\t"\

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

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

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

  337.                  );\

  338. \

  339.     sad8_2_ ## suf(blk1  , blk1+1, blk2  , stride, h);\

  340.     sad8_2_ ## suf(blk1+8, blk1+9, blk2+8, stride, h);\

  341. \

  342.     return sum_ ## suf();\

  343. }\

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

  345. {\

  346.     asm volatile("pxor %%mm7, %%mm7		\n\t"\

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

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

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

  350.                  );\

  351. \

  352.     sad8_2_ ## suf(blk1  , blk1+stride,  blk2  , stride, h);\

  353.     sad8_2_ ## suf(blk1+8, blk1+stride+8,blk2+8, stride, h);\

  354. \

  355.     return sum_ ## suf();\

  356. }\

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

  358. {\

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

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

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

  362.                  :: "m"(round_tab[2]) \

  363.                  );\

  364. \

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

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

  367. \

  368.     return sum_ ## suf();\

  369. }\

  370. 

  371. PIX_SAD(mmx)

  372. PIX_SAD(mmx2)

  373. 

  374. void dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx)

  375. {

  376.     if (mm_flags & MM_MMX) {

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

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

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

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

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

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

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

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

  385. 

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

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

  388.     }

  389.     if (mm_flags & MM_MMXEXT) {

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

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

  392. 

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

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

  395.         

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

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

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

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

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

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

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

  403.         }

  404.     }

  405. }