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FFmpeg/libavcodec/aarch64/h264dsp_neon.S

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  1. /*

  2.  * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>

  3.  * Copyright (c) 2013 Janne Grunau <janne-libav@jannau.net>

  4.  *

  5.  * This file is part of Libav.

  6.  *

  7.  * Libav 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.  * Libav 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 Libav; if not, write to the Free Software

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

  20.  */

  21. 

  22. #include "libavutil/aarch64/asm.S"

  23. #include "neon.S"

  24. 

  25. .macro  h264_loop_filter_start

  26.         cmp             w2,  #0

  27.         ldr             w6,  [x4]

  28.         ccmp            w3,  #0, #0, ne

  29.         mov             v24.S[0], w6

  30.         and             w6,  w6,  w6,  lsl #16

  31.         b.eq            1f

  32.         ands            w6,  w6,  w6,  lsl #8

  33.         b.ge            2f

  34. 1:

  35.         ret

  36. 2:

  37. .endm

  38. 

  39. .macro  h264_loop_filter_luma

  40.         dup             v22.16B, w2                     // alpha

  41.         uxtl            v24.8H,  v24.8B

  42.         uabd            v21.16B, v16.16B, v0.16B        // abs(p0 - q0)

  43.         uxtl            v24.4S,  v24.4H

  44.         uabd            v28.16B, v18.16B, v16.16B       // abs(p1 - p0)

  45.         sli             v24.8H,  v24.8H,  #8

  46.         uabd            v30.16B, v2.16B,  v0.16B        // abs(q1 - q0)

  47.         sli             v24.4S,  v24.4S,  #16

  48.         cmhi            v21.16B, v22.16B, v21.16B       // < alpha

  49.         dup             v22.16B, w3                     // beta

  50.         cmlt            v23.16B, v24.16B, #0

  51.         cmhi            v28.16B, v22.16B, v28.16B       // < beta

  52.         cmhi            v30.16B, v22.16B, v30.16B       // < beta

  53.         bic             v21.16B, v21.16B, v23.16B

  54.         uabd            v17.16B, v20.16B, v16.16B       // abs(p2 - p0)

  55.         and             v21.16B, v21.16B, v28.16B

  56.         uabd            v19.16B,  v4.16B,  v0.16B       // abs(q2 - q0)

  57.         cmhi            v17.16B, v22.16B, v17.16B       // < beta

  58.         and             v21.16B, v21.16B, v30.16B

  59.         cmhi            v19.16B, v22.16B, v19.16B       // < beta

  60.         and             v17.16B, v17.16B, v21.16B

  61.         and             v19.16B, v19.16B, v21.16B

  62.         and             v24.16B, v24.16B, v21.16B

  63.         urhadd          v28.16B, v16.16B,  v0.16B

  64.         sub             v21.16B, v24.16B, v17.16B

  65.         uqadd           v23.16B, v18.16B, v24.16B

  66.         uhadd           v20.16B, v20.16B, v28.16B

  67.         sub             v21.16B, v21.16B, v19.16B

  68.         uhadd           v28.16B,  v4.16B, v28.16B

  69.         umin            v23.16B, v23.16B, v20.16B

  70.         uqsub           v22.16B, v18.16B, v24.16B

  71.         uqadd           v4.16B,   v2.16B, v24.16B

  72.         umax            v23.16B, v23.16B, v22.16B

  73.         uqsub           v22.16B,  v2.16B, v24.16B

  74.         umin            v28.16B,  v4.16B, v28.16B

  75.         uxtl            v4.8H,    v0.8B

  76.         umax            v28.16B, v28.16B, v22.16B

  77.         uxtl2           v20.8H,   v0.16B

  78.         usubw           v4.8H,    v4.8H,  v16.8B

  79.         usubw2          v20.8H,  v20.8H,  v16.16B

  80.         shl             v4.8H,    v4.8H,  #2

  81.         shl             v20.8H,  v20.8H,  #2

  82.         uaddw           v4.8H,    v4.8H,  v18.8B

  83.         uaddw2          v20.8H,  v20.8H,  v18.16B

  84.         usubw           v4.8H,    v4.8H,   v2.8B

  85.         usubw2          v20.8H,  v20.8H,   v2.16B

  86.         rshrn           v4.8B,    v4.8H,  #3

  87.         rshrn2          v4.16B,  v20.8H,  #3

  88.         bsl             v17.16B, v23.16B, v18.16B

  89.         bsl             v19.16B, v28.16B,  v2.16B

  90.         neg             v23.16B, v21.16B

  91.         uxtl            v28.8H,  v16.8B

  92.         smin            v4.16B,   v4.16B, v21.16B

  93.         uxtl2           v21.8H,  v16.16B

  94.         smax            v4.16B,   v4.16B, v23.16B

  95.         uxtl            v22.8H,   v0.8B

  96.         uxtl2           v24.8H,   v0.16B

  97.         saddw           v28.8H,  v28.8H,  v4.8B

  98.         saddw2          v21.8H,  v21.8H,  v4.16B

  99.         ssubw           v22.8H,  v22.8H,  v4.8B

  100.         ssubw2          v24.8H,  v24.8H,  v4.16B

  101.         sqxtun          v16.8B,  v28.8H

  102.         sqxtun2         v16.16B, v21.8H

  103.         sqxtun          v0.8B,   v22.8H

  104.         sqxtun2         v0.16B,  v24.8H

  105. .endm

  106. 

  107. function ff_h264_v_loop_filter_luma_neon, export=1

  108.         h264_loop_filter_start

  109.         sxtw            x1,  w1

  110. 

  111.         ld1             {v0.16B},  [x0], x1

  112.         ld1             {v2.16B},  [x0], x1

  113.         ld1             {v4.16B},  [x0], x1

  114.         sub             x0,  x0,  x1, lsl #2

  115.         sub             x0,  x0,  x1, lsl #1

  116.         ld1             {v20.16B},  [x0], x1

  117.         ld1             {v18.16B},  [x0], x1

  118.         ld1             {v16.16B},  [x0], x1

  119. 

  120.         h264_loop_filter_luma

  121. 

  122.         sub             x0,  x0,  x1, lsl #1

  123.         st1             {v17.16B},  [x0], x1

  124.         st1             {v16.16B}, [x0], x1

  125.         st1             {v0.16B},  [x0], x1

  126.         st1             {v19.16B}, [x0]

  127. 

  128.         ret

  129. endfunc

  130. 

  131. function ff_h264_h_loop_filter_luma_neon, export=1

  132.         h264_loop_filter_start

  133. 

  134.         sub             x0,  x0,  #4

  135.         ld1             {v6.8B},  [x0], x1

  136.         ld1             {v20.8B}, [x0], x1

  137.         ld1             {v18.8B}, [x0], x1

  138.         ld1             {v16.8B}, [x0], x1

  139.         ld1             {v0.8B},  [x0], x1

  140.         ld1             {v2.8B},  [x0], x1

  141.         ld1             {v4.8B},  [x0], x1

  142.         ld1             {v26.8B}, [x0], x1

  143.         ld1             {v6.D}[1],  [x0], x1

  144.         ld1             {v20.D}[1], [x0], x1

  145.         ld1             {v18.D}[1], [x0], x1

  146.         ld1             {v16.D}[1], [x0], x1

  147.         ld1             {v0.D}[1],  [x0], x1

  148.         ld1             {v2.D}[1],  [x0], x1

  149.         ld1             {v4.D}[1],  [x0], x1

  150.         ld1             {v26.D}[1], [x0], x1

  151. 

  152.         transpose_8x16B v6, v20, v18, v16, v0, v2, v4, v26, v21, v23

  153. 

  154.         h264_loop_filter_luma

  155. 

  156.         transpose_4x16B v17, v16, v0, v19, v21, v23, v25, v27

  157. 

  158.         sub             x0,  x0,  x1, lsl #4

  159.         add             x0,  x0,  #2

  160.         st1             {v17.S}[0],  [x0], x1

  161.         st1             {v16.S}[0], [x0], x1

  162.         st1             {v0.S}[0],  [x0], x1

  163.         st1             {v19.S}[0], [x0], x1

  164.         st1             {v17.S}[1],  [x0], x1

  165.         st1             {v16.S}[1], [x0], x1

  166.         st1             {v0.S}[1],  [x0], x1

  167.         st1             {v19.S}[1], [x0], x1

  168.         st1             {v17.S}[2],  [x0], x1

  169.         st1             {v16.S}[2], [x0], x1

  170.         st1             {v0.S}[2],  [x0], x1

  171.         st1             {v19.S}[2], [x0], x1

  172.         st1             {v17.S}[3],  [x0], x1

  173.         st1             {v16.S}[3], [x0], x1

  174.         st1             {v0.S}[3],  [x0], x1

  175.         st1             {v19.S}[3], [x0], x1

  176. 

  177.         ret

  178. endfunc

  179. 

  180. .macro  h264_loop_filter_chroma

  181.         dup             v22.8B, w2              // alpha

  182.         uxtl            v24.8H, v24.8B

  183.         uabd            v26.8B, v16.8B, v0.8B   // abs(p0 - q0)

  184.         uxtl            v4.8H,  v0.8B

  185.         uabd            v28.8B, v18.8B, v16.8B  // abs(p1 - p0)

  186.         usubw           v4.8H,  v4.8H,  v16.8B

  187.         sli             v24.8H, v24.8H, #8

  188.         shl             v4.8H,  v4.8H,  #2

  189.         uabd            v30.8B, v2.8B,  v0.8B   // abs(q1 - q0)

  190.         uaddw           v4.8H,  v4.8H,  v18.8B

  191.         cmhi            v26.8B, v22.8B, v26.8B  // < alpha

  192.         usubw           v4.8H,  v4.8H,  v2.8B

  193.         dup             v22.8B, w3              // beta

  194.         rshrn           v4.8B,  v4.8H,  #3

  195.         cmhi            v28.8B, v22.8B, v28.8B  // < beta

  196.         cmhi            v30.8B, v22.8B, v30.8B  // < beta

  197.         smin            v4.8B,  v4.8B,  v24.8B

  198.         neg             v25.8B, v24.8B

  199.         and             v26.8B, v26.8B, v28.8B

  200.         smax            v4.8B,  v4.8B,  v25.8B

  201.         and             v26.8B, v26.8B, v30.8B

  202.         uxtl            v22.8H, v0.8B

  203.         and             v4.8B,  v4.8B,  v26.8B

  204.         uxtl            v28.8H, v16.8B

  205.         saddw           v28.8H, v28.8H, v4.8B

  206.         ssubw           v22.8H, v22.8H, v4.8B

  207.         sqxtun          v16.8B, v28.8H

  208.         sqxtun          v0.8B,  v22.8H

  209. .endm

  210. 

  211. function ff_h264_v_loop_filter_chroma_neon, export=1

  212.         h264_loop_filter_start

  213. 

  214.         sub             x0,  x0,  x1, lsl #1

  215.         ld1             {v18.8B}, [x0], x1

  216.         ld1             {v16.8B}, [x0], x1

  217.         ld1             {v0.8B},  [x0], x1

  218.         ld1             {v2.8B},  [x0]

  219. 

  220.         h264_loop_filter_chroma

  221. 

  222.         sub             x0,  x0,  x1, lsl #1

  223.         st1             {v16.8B}, [x0], x1

  224.         st1             {v0.8B},  [x0], x1

  225. 

  226.         ret

  227. endfunc

  228. 

  229. function ff_h264_h_loop_filter_chroma_neon, export=1

  230.         h264_loop_filter_start

  231. 

  232.         sub             x0,  x0,  #2

  233.         ld1             {v18.S}[0], [x0], x1

  234.         ld1             {v16.S}[0], [x0], x1

  235.         ld1             {v0.S}[0],  [x0], x1

  236.         ld1             {v2.S}[0],  [x0], x1

  237.         ld1             {v18.S}[1], [x0], x1

  238.         ld1             {v16.S}[1], [x0], x1

  239.         ld1             {v0.S}[1],  [x0], x1

  240.         ld1             {v2.S}[1],  [x0], x1

  241. 

  242.         transpose_4x8B  v18, v16, v0, v2, v28, v29, v30, v31

  243. 

  244.         h264_loop_filter_chroma

  245. 

  246.         transpose_4x8B  v18, v16, v0, v2, v28, v29, v30, v31

  247. 

  248.         sub             x0,  x0,  x1, lsl #3

  249.         st1             {v18.S}[0], [x0], x1

  250.         st1             {v16.S}[0], [x0], x1

  251.         st1             {v0.S}[0],  [x0], x1

  252.         st1             {v2.S}[0],  [x0], x1

  253.         st1             {v18.S}[1], [x0], x1

  254.         st1             {v16.S}[1], [x0], x1

  255.         st1             {v0.S}[1],  [x0], x1

  256.         st1             {v2.S}[1],  [x0], x1

  257. 

  258.         ret

  259. endfunc

  260. 

  261. .macro  biweight_16     macs, macd

  262.         dup             v0.16B,  w5

  263.         dup             v1.16B,  w6

  264.         mov             v4.16B,  v16.16B

  265.         mov             v6.16B,  v16.16B

  266. 1:      subs            w3,  w3,  #2

  267.         ld1             {v20.16B}, [x0], x2

  268.         \macd           v4.8H,   v0.8B,  v20.8B

  269.         \macd\()2       v6.8H,   v0.16B, v20.16B

  270.         ld1             {v22.16B}, [x1], x2

  271.         \macs           v4.8H,   v1.8B,  v22.8B

  272.         \macs\()2       v6.8H,   v1.16B, v22.16B

  273.         mov             v24.16B, v16.16B

  274.         ld1             {v28.16B}, [x0], x2

  275.         mov             v26.16B, v16.16B

  276.         \macd           v24.8H,  v0.8B,  v28.8B

  277.         \macd\()2       v26.8H,  v0.16B, v28.16B

  278.         ld1             {v30.16B}, [x1], x2

  279.         \macs           v24.8H,  v1.8B,  v30.8B

  280.         \macs\()2       v26.8H,  v1.16B, v30.16B

  281.         sshl            v4.8H,   v4.8H,  v18.8H

  282.         sshl            v6.8H,   v6.8H,  v18.8H

  283.         sqxtun          v4.8B,   v4.8H

  284.         sqxtun2         v4.16B,  v6.8H

  285.         sshl            v24.8H,  v24.8H, v18.8H

  286.         sshl            v26.8H,  v26.8H, v18.8H

  287.         sqxtun          v24.8B,  v24.8H

  288.         sqxtun2         v24.16B, v26.8H

  289.         mov             v6.16B,  v16.16B

  290.         st1             {v4.16B},  [x7], x2

  291.         mov             v4.16B,  v16.16B

  292.         st1             {v24.16B}, [x7], x2

  293.         b.ne            1b

  294.         ret

  295. .endm

  296. 

  297. .macro  biweight_8      macs, macd

  298.         dup             v0.8B,  w5

  299.         dup             v1.8B,  w6

  300.         mov             v2.16B,  v16.16B

  301.         mov             v20.16B, v16.16B

  302. 1:      subs            w3,  w3,  #2

  303.         ld1             {v4.8B}, [x0], x2

  304.         \macd           v2.8H,  v0.8B,  v4.8B

  305.         ld1             {v5.8B}, [x1], x2

  306.         \macs           v2.8H,  v1.8B,  v5.8B

  307.         ld1             {v6.8B}, [x0], x2

  308.         \macd           v20.8H, v0.8B,  v6.8B

  309.         ld1             {v7.8B}, [x1], x2

  310.         \macs           v20.8H, v1.8B,  v7.8B

  311.         sshl            v2.8H,  v2.8H,  v18.8H

  312.         sqxtun          v2.8B,  v2.8H

  313.         sshl            v20.8H, v20.8H, v18.8H

  314.         sqxtun          v4.8B,  v20.8H

  315.         mov             v20.16B, v16.16B

  316.         st1             {v2.8B}, [x7], x2

  317.         mov             v2.16B,  v16.16B

  318.         st1             {v4.8B}, [x7], x2

  319.         b.ne            1b

  320.         ret

  321. .endm

  322. 

  323. .macro  biweight_4      macs, macd

  324.         dup             v0.8B,  w5

  325.         dup             v1.8B,  w6

  326.         mov             v2.16B, v16.16B

  327.         mov             v20.16B,v16.16B

  328. 1:      subs            w3,  w3,  #4

  329.         ld1             {v4.S}[0], [x0], x2

  330.         ld1             {v4.S}[1], [x0], x2

  331.         \macd           v2.8H,  v0.8B,  v4.8B

  332.         ld1             {v5.S}[0], [x1], x2

  333.         ld1             {v5.S}[1], [x1], x2

  334.         \macs           v2.8H,  v1.8B,  v5.8B

  335.         b.lt            2f

  336.         ld1             {v6.S}[0], [x0], x2

  337.         ld1             {v6.S}[1], [x0], x2

  338.         \macd           v20.8H, v0.8B,  v6.8B

  339.         ld1             {v7.S}[0], [x1], x2

  340.         ld1             {v7.S}[1], [x1], x2

  341.         \macs           v20.8H, v1.8B,  v7.8B

  342.         sshl            v2.8H,  v2.8H,  v18.8H

  343.         sqxtun          v2.8B,  v2.8H

  344.         sshl            v20.8H, v20.8H, v18.8H

  345.         sqxtun          v4.8B,  v20.8H

  346.         mov             v20.16B, v16.16B

  347.         st1             {v2.S}[0], [x7], x2

  348.         st1             {v2.S}[1], [x7], x2

  349.         mov             v2.16B,  v16.16B

  350.         st1             {v4.S}[0], [x7], x2

  351.         st1             {v4.S}[1], [x7], x2

  352.         b.ne            1b

  353.         ret

  354. 2:      sshl            v2.8H,  v2.8H,  v18.8H

  355.         sqxtun          v2.8B,  v2.8H

  356.         st1             {v2.S}[0], [x7], x2

  357.         st1             {v2.S}[1], [x7], x2

  358.         ret

  359. .endm

  360. 

  361. .macro  biweight_func   w

  362. function ff_biweight_h264_pixels_\w\()_neon, export=1

  363.         sxtw            x2,  w2

  364.         lsr             w8,  w5,  #31

  365.         add             w7,  w7,  #1

  366.         eor             w8,  w8,  w6,  lsr #30

  367.         orr             w7,  w7,  #1

  368.         dup             v18.8H,   w4

  369.         lsl             w7,  w7,  w4

  370.         not             v18.16B,  v18.16B

  371.         dup             v16.8H,   w7

  372.         mov             x7,  x0

  373.         cbz             w8,  10f

  374.         subs            w8,  w8,  #1

  375.         b.eq            20f

  376.         subs            w8,  w8,  #1

  377.         b.eq            30f

  378.         b               40f

  379. 10:     biweight_\w     umlal, umlal

  380. 20:     neg             w5, w5

  381.         biweight_\w     umlal, umlsl

  382. 30:     neg             w5, w5

  383.         neg             w6, w6

  384.         biweight_\w     umlsl, umlsl

  385. 40:     neg             w6, w6

  386.         biweight_\w     umlsl, umlal

  387. endfunc

  388. .endm

  389. 

  390.         biweight_func   16

  391.         biweight_func   8

  392.         biweight_func   4

  393. 

  394. .macro  weight_16       add

  395.         dup             v0.16B,  w4

  396. 1:      subs            w2,  w2,  #2

  397.         ld1             {v20.16B}, [x0], x1

  398.         umull           v4.8H,   v0.8B,  v20.8B

  399.         umull2          v6.8H,   v0.16B, v20.16B

  400.         ld1             {v28.16B}, [x0], x1

  401.         umull           v24.8H,  v0.8B,  v28.8B

  402.         umull2          v26.8H,  v0.16B, v28.16B

  403.         \add            v4.8H,   v16.8H, v4.8H

  404.         srshl           v4.8H,   v4.8H,  v18.8H

  405.         \add            v6.8H,   v16.8H, v6.8H

  406.         srshl           v6.8H,   v6.8H,  v18.8H

  407.         sqxtun          v4.8B,   v4.8H

  408.         sqxtun2         v4.16B,  v6.8H

  409.         \add            v24.8H,  v16.8H, v24.8H

  410.         srshl           v24.8H,  v24.8H, v18.8H

  411.         \add            v26.8H,  v16.8H, v26.8H

  412.         srshl           v26.8H,  v26.8H, v18.8H

  413.         sqxtun          v24.8B,  v24.8H

  414.         sqxtun2         v24.16B, v26.8H

  415.         st1             {v4.16B},  [x5], x1

  416.         st1             {v24.16B}, [x5], x1

  417.         b.ne            1b

  418.         ret

  419. .endm

  420. 

  421. .macro  weight_8        add

  422.         dup             v0.8B,  w4

  423. 1:      subs            w2,  w2,  #2

  424.         ld1             {v4.8B}, [x0], x1

  425.         umull           v2.8H,  v0.8B,  v4.8B

  426.         ld1             {v6.8B}, [x0], x1

  427.         umull           v20.8H, v0.8B,  v6.8B

  428.         \add            v2.8H,  v16.8H,  v2.8H

  429.         srshl           v2.8H,  v2.8H,  v18.8H

  430.         sqxtun          v2.8B,  v2.8H

  431.         \add            v20.8H, v16.8H,  v20.8H

  432.         srshl           v20.8H, v20.8H, v18.8H

  433.         sqxtun          v4.8B,  v20.8H

  434.         st1             {v2.8B}, [x5], x1

  435.         st1             {v4.8B}, [x5], x1

  436.         b.ne            1b

  437.         ret

  438. .endm

  439. 

  440. .macro  weight_4        add

  441.         dup             v0.8B,  w4

  442. 1:      subs            w2,  w2,  #4

  443.         ld1             {v4.S}[0], [x0], x1

  444.         ld1             {v4.S}[1], [x0], x1

  445.         umull           v2.8H,  v0.8B,  v4.8B

  446.         b.lt            2f

  447.         ld1             {v6.S}[0], [x0], x1

  448.         ld1             {v6.S}[1], [x0], x1

  449.         umull           v20.8H, v0.8B,  v6.8B

  450.         \add            v2.8H,  v16.8H,  v2.8H

  451.         srshl           v2.8H,  v2.8H,  v18.8H

  452.         sqxtun          v2.8B,  v2.8H

  453.         \add            v20.8H, v16.8H,  v20.8H

  454.         srshl           v20.8H, v20.8h, v18.8H

  455.         sqxtun          v4.8B,  v20.8H

  456.         st1             {v2.S}[0], [x5], x1

  457.         st1             {v2.S}[1], [x5], x1

  458.         st1             {v4.S}[0], [x5], x1

  459.         st1             {v4.S}[1], [x5], x1

  460.         b.ne            1b

  461.         ret

  462. 2:      \add            v2.8H,  v16.8H,  v2.8H

  463.         srshl           v2.8H,  v2.8H,  v18.8H

  464.         sqxtun          v2.8B,  v2.8H

  465.         st1             {v2.S}[0], [x5], x1

  466.         st1             {v2.S}[1], [x5], x1

  467.         ret

  468. .endm

  469. 

  470. .macro  weight_func     w

  471. function ff_weight_h264_pixels_\w\()_neon, export=1

  472.         sxtw            x1,  w1

  473.         cmp             w3,  #1

  474.         mov             w6,  #1

  475.         lsl             w5,  w5,  w3

  476.         dup             v16.8H,  w5

  477.         mov             x5,  x0

  478.         b.le            20f

  479.         sub             w6,  w6,  w3

  480.         dup             v18.8H,  w6

  481.         cmp             w4, #0

  482.         b.lt            10f

  483.         weight_\w       shadd

  484. 10:     neg             w4,  w4

  485.         weight_\w       shsub

  486. 20:     neg             w6,  w3

  487.         dup             v18.8H,  w6

  488.         cmp             w4,  #0

  489.         b.lt            10f

  490.         weight_\w       add

  491. 10:     neg             w4,  w4

  492.         weight_\w       sub

  493. endfunc

  494. .endm

  495. 

  496.         weight_func     16

  497.         weight_func     8

  498.         weight_func     4