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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.  *

  5.  * This library is free software; you can redistribute it and/or

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

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

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

  9.  *

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

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

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

  13.  * Lesser General Public License for more details.

  14.  *

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

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

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

  18.  *

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

  20.  */

  21. #include "../dsputil.h"

  22. 

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

  24. 0x0000000000000000ULL,

  25. 0x0001000100010001ULL,

  26. 0x0002000200020002ULL,

  27. };

  28. 

  29. static __attribute__ ((aligned(8), unused)) uint64_t bone= 0x0101010101010101LL;

  30. 

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

  32. {

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

  34.     asm volatile(

  35.         ".balign 16			\n\t"

  36.         "1:				\n\t"

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  61.         " js 1b				\n\t"

  62.         : "+a" (len)

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

  64.     );

  65. }

  66. 

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

  68. {

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

  70.     asm volatile(

  71.         ".balign 16			\n\t"

  72.         "1:				\n\t"

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

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

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

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

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

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

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

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

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

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

  83.         " js 1b				\n\t"

  84.         : "+a" (len)

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

  86.     );

  87. }

  88. 

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

  90. {

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

  92.     asm volatile(

  93.         ".balign 16			\n\t"

  94.         "1:				\n\t"

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  109.         " js 1b				\n\t"

  110.         : "+a" (len)

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

  112.     );

  113. }

  114. 

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

  116. { //FIXME reuse src

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

  118.     asm volatile(

  119.         ".balign 16			\n\t"

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

  121.         "1:				\n\t"

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  146.         " js 1b				\n\t"

  147.         : "+a" (len)

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

  149.     );

  150. }

  151. 

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

  153. {

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

  155.     asm volatile(

  156.         ".balign 16			\n\t"

  157.         "1:				\n\t"

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  184.         " js 1b				\n\t"

  185.         : "+a" (len)

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

  187.     );

  188. }

  189. 

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

  191. {

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

  193.     asm volatile(

  194.         ".balign 16			\n\t"

  195.         "1:				\n\t"

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  234.         " js 1b				\n\t"

  235.         : "+a" (len)

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

  237.     );

  238. }

  239. 

  240. static inline int sum_mmx(void)

  241. {

  242.     int ret;

  243.     asm volatile(

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

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

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

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

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

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

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

  251.         : "=r" (ret)

  252.     );

  253.     return ret&0xFFFF;

  254. }

  255. 

  256. static inline int sum_mmx2(void)

  257. {

  258.     int ret;

  259.     asm volatile(

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

  261.         : "=r" (ret)

  262.     );

  263.     return ret;

  264. }

  265. 

  266. 

  267. #define PIX_SAD(suf)\

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

  269. {\

  270.     assert(h==8);\

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

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

  273. \

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

  275. \

  276.     return sum_ ## suf();\

  277. }\

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

  279. {\

  280.     assert(h==8);\

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

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

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

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

  285.                  );\

  286. \

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

  288. \

  289.     return sum_ ## suf();\

  290. }\

  291. \

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

  293. {\

  294.     assert(h==8);\

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

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

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

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

  299.                  );\

  300. \

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

  302. \

  303.     return sum_ ## suf();\

  304. }\

  305. \

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

  307. {\

  308.     assert(h==8);\

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

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

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

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

  313.                  );\

  314. \

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

  316. \

  317.     return sum_ ## suf();\

  318. }\

  319. \

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

  321. {\

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

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

  324. \

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

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

  327. \

  328.     return sum_ ## suf();\

  329. }\

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

  331. {\

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

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

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

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

  336.                  );\

  337. \

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

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

  340. \

  341.     return sum_ ## suf();\

  342. }\

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

  344. {\

  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_2_ ## suf(blk1  , blk1+stride,  blk2  , stride, h);\

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

  353. \

  354.     return sum_ ## suf();\

  355. }\

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

  357. {\

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

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

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

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

  362.                  );\

  363. \

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

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

  366. \

  367.     return sum_ ## suf();\

  368. }\

  369. 

  370. PIX_SAD(mmx)

  371. PIX_SAD(mmx2)

  372. 

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

  374. {

  375.     if (mm_flags & MM_MMX) {

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

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

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

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

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

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

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

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

  384. 

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

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

  387.     }

  388.     if (mm_flags & MM_MMXEXT) {

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

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

  391. 

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

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

  394.         

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

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

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

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

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

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

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

  402.         }

  403.     }

  404. }