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FFmpeg/libavcodec/x86/fft.asm

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  1. ;******************************************************************************

  2. ;* FFT transform with SSE/3DNow optimizations

  3. ;* Copyright (c) 2008 Loren Merritt

  4. ;* Copyright (c) 2011 Vitor Sessak

  5. ;*

  6. ;* This algorithm (though not any of the implementation details) is

  7. ;* based on libdjbfft by D. J. Bernstein.

  8. ;*

  9. ;* This file is part of FFmpeg.

  10. ;*

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

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

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

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

  15. ;*

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

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

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

  19. ;* Lesser General Public License for more details.

  20. ;*

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

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

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

  24. ;******************************************************************************

  25. 

  26. ; These functions are not individually interchangeable with the C versions.

  27. ; While C takes arrays of FFTComplex, SSE/3DNow leave intermediate results

  28. ; in blocks as conventient to the vector size.

  29. ; i.e. {4x real, 4x imaginary, 4x real, ...} (or 2x respectively)

  30. 

  31. %include "libavutil/x86/x86util.asm"

  32. 

  33. %if ARCH_X86_64

  34. %define pointer resq

  35. %else

  36. %define pointer resd

  37. %endif

  38. 

  39. SECTION_RODATA

  40. 

  41. struc FFTContext

  42.     .nbits:    resd 1

  43.     .reverse:  resd 1

  44.     .revtab:   pointer 1

  45.     .tmpbuf:   pointer 1

  46.     .mdctsize: resd 1

  47.     .mdctbits: resd 1

  48.     .tcos:     pointer 1

  49.     .tsin:     pointer 1

  50.     .fftperm:  pointer 1

  51.     .fftcalc:  pointer 1

  52.     .imdctcalc:pointer 1

  53.     .imdcthalf:pointer 1

  54. endstruc

  55. 

  56. %define M_SQRT1_2 0.70710678118654752440

  57. %define M_COS_PI_1_8 0.923879532511287

  58. %define M_COS_PI_3_8 0.38268343236509

  59. 

  60. align 32

  61. ps_cos16_1: dd 1.0, M_COS_PI_1_8, M_SQRT1_2, M_COS_PI_3_8, 1.0, M_COS_PI_1_8, M_SQRT1_2, M_COS_PI_3_8

  62. ps_cos16_2: dd 0, M_COS_PI_3_8, M_SQRT1_2, M_COS_PI_1_8, 0, -M_COS_PI_3_8, -M_SQRT1_2, -M_COS_PI_1_8

  63. 

  64. ps_root2: times 8 dd M_SQRT1_2

  65. ps_root2mppm: dd -M_SQRT1_2, M_SQRT1_2, M_SQRT1_2, -M_SQRT1_2, -M_SQRT1_2, M_SQRT1_2, M_SQRT1_2, -M_SQRT1_2

  66. ps_p1p1m1p1: dd 0, 0, 1<<31, 0, 0, 0, 1<<31, 0

  67. 

  68. perm1: dd 0x00, 0x02, 0x03, 0x01, 0x03, 0x00, 0x02, 0x01

  69. perm2: dd 0x00, 0x01, 0x02, 0x03, 0x01, 0x00, 0x02, 0x03

  70. ps_p1p1m1p1root2: dd 1.0, 1.0, -1.0, 1.0, M_SQRT1_2, M_SQRT1_2, M_SQRT1_2, M_SQRT1_2

  71. ps_m1m1p1m1p1m1m1m1: dd 1<<31, 1<<31, 0, 1<<31, 0, 1<<31, 1<<31, 1<<31

  72. ps_m1m1m1m1: times 4 dd 1<<31

  73. ps_m1p1: dd 1<<31, 0

  74. 

  75. %assign i 16

  76. %rep 13

  77. cextern cos_ %+ i

  78. %assign i i<<1

  79. %endrep

  80. 

  81. %if ARCH_X86_64

  82.     %define pointer dq

  83. %else

  84.     %define pointer dd

  85. %endif

  86. 

  87. %macro IF0 1+

  88. %endmacro

  89. %macro IF1 1+

  90.     %1

  91. %endmacro

  92. 

  93. SECTION_TEXT

  94. 

  95. %macro T2_3DNOW 4 ; z0, z1, mem0, mem1

  96.     mova     %1, %3

  97.     mova     %2, %1

  98.     pfadd    %1, %4

  99.     pfsub    %2, %4

  100. %endmacro

  101. 

  102. %macro T4_3DNOW 6 ; z0, z1, z2, z3, tmp0, tmp1

  103.     mova     %5, %3

  104.     pfsub    %3, %4

  105.     pfadd    %5, %4 ; {t6,t5}

  106.     pxor     %3, [ps_m1p1] ; {t8,t7}

  107.     mova     %6, %1

  108.     PSWAPD   %3, %3

  109.     pfadd    %1, %5 ; {r0,i0}

  110.     pfsub    %6, %5 ; {r2,i2}

  111.     mova     %4, %2

  112.     pfadd    %2, %3 ; {r1,i1}

  113.     pfsub    %4, %3 ; {r3,i3}

  114.     SWAP     %3, %6

  115. %endmacro

  116. 

  117. ;  in: %1 = {r0,i0,r2,i2,r4,i4,r6,i6}

  118. ;      %2 = {r1,i1,r3,i3,r5,i5,r7,i7}

  119. ;      %3, %4, %5 tmp

  120. ; out: %1 = {r0,r1,r2,r3,i0,i1,i2,i3}

  121. ;      %2 = {r4,r5,r6,r7,i4,i5,i6,i7}

  122. %macro T8_AVX 5

  123.     vsubps     %5, %1, %2       ; v  = %1 - %2

  124.     vaddps     %3, %1, %2       ; w  = %1 + %2

  125.     vmulps     %2, %5, [ps_p1p1m1p1root2]  ; v *= vals1

  126.     vpermilps  %2, %2, [perm1]

  127.     vblendps   %1, %2, %3, 0x33 ; q = {w1,w2,v4,v2,w5,w6,v7,v6}

  128.     vshufps    %5, %3, %2, 0x4e ; r = {w3,w4,v1,v3,w7,w8,v8,v5}

  129.     vsubps     %4, %5, %1       ; s = r - q

  130.     vaddps     %1, %5, %1       ; u = r + q

  131.     vpermilps  %1, %1, [perm2]  ; k  = {u1,u2,u3,u4,u6,u5,u7,u8}

  132.     vshufps    %5, %4, %1, 0xbb

  133.     vshufps    %3, %4, %1, 0xee

  134.     vperm2f128 %3, %3, %5, 0x13

  135.     vxorps     %4, %4, [ps_m1m1p1m1p1m1m1m1]  ; s *= {1,1,-1,-1,1,-1,-1,-1}

  136.     vshufps    %2, %1, %4, 0xdd

  137.     vshufps    %1, %1, %4, 0x88

  138.     vperm2f128 %4, %2, %1, 0x02 ; v  = {k1,k3,s1,s3,k2,k4,s2,s4}

  139.     vperm2f128 %1, %1, %2, 0x13 ; w  = {k6,k8,s6,s8,k5,k7,s5,s7}

  140.     vsubps     %5, %1, %3

  141.     vblendps   %1, %5, %1, 0x55 ; w -= {0,s7,0,k7,0,s8,0,k8}

  142.     vsubps     %2, %4, %1       ; %2 = v - w

  143.     vaddps     %1, %4, %1       ; %1 = v + w

  144. %endmacro

  145. 

  146. ; In SSE mode do one fft4 transforms

  147. ; in:  %1={r0,i0,r2,i2} %2={r1,i1,r3,i3}

  148. ; out: %1={r0,r1,r2,r3} %2={i0,i1,i2,i3}

  149. ;

  150. ; In AVX mode do two fft4 transforms

  151. ; in:  %1={r0,i0,r2,i2,r4,i4,r6,i6} %2={r1,i1,r3,i3,r5,i5,r7,i7}

  152. ; out: %1={r0,r1,r2,r3,r4,r5,r6,r7} %2={i0,i1,i2,i3,i4,i5,i6,i7}

  153. %macro T4_SSE 3

  154.     subps    %3, %1, %2       ; {t3,t4,-t8,t7}

  155.     addps    %1, %1, %2       ; {t1,t2,t6,t5}

  156.     xorps    %3, %3, [ps_p1p1m1p1]

  157.     shufps   %2, %1, %3, 0xbe ; {t6,t5,t7,t8}

  158.     shufps   %1, %1, %3, 0x44 ; {t1,t2,t3,t4}

  159.     subps    %3, %1, %2       ; {r2,i2,r3,i3}

  160.     addps    %1, %1, %2       ; {r0,i0,r1,i1}

  161.     shufps   %2, %1, %3, 0xdd ; {i0,i1,i2,i3}

  162.     shufps   %1, %1, %3, 0x88 ; {r0,r1,r2,r3}

  163. %endmacro

  164. 

  165. ; In SSE mode do one FFT8

  166. ; in:  %1={r0,r1,r2,r3} %2={i0,i1,i2,i3} %3={r4,i4,r6,i6} %4={r5,i5,r7,i7}

  167. ; out: %1={r0,r1,r2,r3} %2={i0,i1,i2,i3} %1={r4,r5,r6,r7} %2={i4,i5,i6,i7}

  168. ;

  169. ; In AVX mode do two FFT8

  170. ; in:  %1={r0,i0,r2,i2,r8, i8, r10,i10} %2={r1,i1,r3,i3,r9, i9, r11,i11}

  171. ;      %3={r4,i4,r6,i6,r12,i12,r14,i14} %4={r5,i5,r7,i7,r13,i13,r15,i15}

  172. ; out: %1={r0,r1,r2,r3,r8, r9, r10,r11} %2={i0,i1,i2,i3,i8, i9, i10,i11}

  173. ;      %3={r4,r5,r6,r7,r12,r13,r14,r15} %4={i4,i5,i6,i7,i12,i13,i14,i15}

  174. %macro T8_SSE 6

  175.     addps    %6, %3, %4       ; {t1,t2,t3,t4}

  176.     subps    %3, %3, %4       ; {r5,i5,r7,i7}

  177.     shufps   %4, %3, %3, 0xb1 ; {i5,r5,i7,r7}

  178.     mulps    %3, %3, [ps_root2mppm] ; {-r5,i5,r7,-i7}

  179.     mulps    %4, %4, [ps_root2]

  180.     addps    %3, %3, %4       ; {t8,t7,ta,t9}

  181.     shufps   %4, %6, %3, 0x9c ; {t1,t4,t7,ta}

  182.     shufps   %6, %6, %3, 0x36 ; {t3,t2,t9,t8}

  183.     subps    %3, %6, %4       ; {t6,t5,tc,tb}

  184.     addps    %6, %6, %4       ; {t1,t2,t9,ta}

  185.     shufps   %5, %6, %3, 0x8d ; {t2,ta,t6,tc}

  186.     shufps   %6, %6, %3, 0xd8 ; {t1,t9,t5,tb}

  187.     subps    %3, %1, %6       ; {r4,r5,r6,r7}

  188.     addps    %1, %1, %6       ; {r0,r1,r2,r3}

  189.     subps    %4, %2, %5       ; {i4,i5,i6,i7}

  190.     addps    %2, %2, %5       ; {i0,i1,i2,i3}

  191. %endmacro

  192. 

  193. ; scheduled for cpu-bound sizes

  194. %macro PASS_SMALL 3 ; (to load m4-m7), wre, wim

  195. IF%1 mova    m4, Z(4)

  196. IF%1 mova    m5, Z(5)

  197.     mova     m0, %2 ; wre

  198.     mova     m1, %3 ; wim

  199.     mulps    m2, m4, m0 ; r2*wre

  200. IF%1 mova    m6, Z2(6)

  201.     mulps    m3, m5, m1 ; i2*wim

  202. IF%1 mova    m7, Z2(7)

  203.     mulps    m4, m4, m1 ; r2*wim

  204.     mulps    m5, m5, m0 ; i2*wre

  205.     addps    m2, m2, m3 ; r2*wre + i2*wim

  206.     mulps    m3, m1, m7 ; i3*wim

  207.     subps    m5, m5, m4 ; i2*wre - r2*wim

  208.     mulps    m1, m1, m6 ; r3*wim

  209.     mulps    m4, m0, m6 ; r3*wre

  210.     mulps    m0, m0, m7 ; i3*wre

  211.     subps    m4, m4, m3 ; r3*wre - i3*wim

  212.     mova     m3, Z(0)

  213.     addps    m0, m0, m1 ; i3*wre + r3*wim

  214.     subps    m1, m4, m2 ; t3

  215.     addps    m4, m4, m2 ; t5

  216.     subps    m3, m3, m4 ; r2

  217.     addps    m4, m4, Z(0) ; r0

  218.     mova     m6, Z(2)

  219.     mova   Z(4), m3

  220.     mova   Z(0), m4

  221.     subps    m3, m5, m0 ; t4

  222.     subps    m4, m6, m3 ; r3

  223.     addps    m3, m3, m6 ; r1

  224.     mova  Z2(6), m4

  225.     mova   Z(2), m3

  226.     mova     m2, Z(3)

  227.     addps    m3, m5, m0 ; t6

  228.     subps    m2, m2, m1 ; i3

  229.     mova     m7, Z(1)

  230.     addps    m1, m1, Z(3) ; i1

  231.     mova  Z2(7), m2

  232.     mova   Z(3), m1

  233.     subps    m4, m7, m3 ; i2

  234.     addps    m3, m3, m7 ; i0

  235.     mova   Z(5), m4

  236.     mova   Z(1), m3

  237. %endmacro

  238. 

  239. ; scheduled to avoid store->load aliasing

  240. %macro PASS_BIG 1 ; (!interleave)

  241.     mova     m4, Z(4) ; r2

  242.     mova     m5, Z(5) ; i2

  243.     mova     m0, [wq] ; wre

  244.     mova     m1, [wq+o1q] ; wim

  245.     mulps    m2, m4, m0 ; r2*wre

  246.     mova     m6, Z2(6) ; r3

  247.     mulps    m3, m5, m1 ; i2*wim

  248.     mova     m7, Z2(7) ; i3

  249.     mulps    m4, m4, m1 ; r2*wim

  250.     mulps    m5, m5, m0 ; i2*wre

  251.     addps    m2, m2, m3 ; r2*wre + i2*wim

  252.     mulps    m3, m1, m7 ; i3*wim

  253.     mulps    m1, m1, m6 ; r3*wim

  254.     subps    m5, m5, m4 ; i2*wre - r2*wim

  255.     mulps    m4, m0, m6 ; r3*wre

  256.     mulps    m0, m0, m7 ; i3*wre

  257.     subps    m4, m4, m3 ; r3*wre - i3*wim

  258.     mova     m3, Z(0)

  259.     addps    m0, m0, m1 ; i3*wre + r3*wim

  260.     subps    m1, m4, m2 ; t3

  261.     addps    m4, m4, m2 ; t5

  262.     subps    m3, m3, m4 ; r2

  263.     addps    m4, m4, Z(0) ; r0

  264.     mova     m6, Z(2)

  265.     mova   Z(4), m3

  266.     mova   Z(0), m4

  267.     subps    m3, m5, m0 ; t4

  268.     subps    m4, m6, m3 ; r3

  269.     addps    m3, m3, m6 ; r1

  270. IF%1 mova Z2(6), m4

  271. IF%1 mova  Z(2), m3

  272.     mova     m2, Z(3)

  273.     addps    m5, m5, m0 ; t6

  274.     subps    m2, m2, m1 ; i3

  275.     mova     m7, Z(1)

  276.     addps    m1, m1, Z(3) ; i1

  277. IF%1 mova Z2(7), m2

  278. IF%1 mova  Z(3), m1

  279.     subps    m6, m7, m5 ; i2

  280.     addps    m5, m5, m7 ; i0

  281. IF%1 mova  Z(5), m6

  282. IF%1 mova  Z(1), m5

  283. %if %1==0

  284.     INTERL m1, m3, m7, Z, 2

  285.     INTERL m2, m4, m0, Z2, 6

  286. 

  287.     mova     m1, Z(0)

  288.     mova     m2, Z(4)

  289. 

  290.     INTERL m5, m1, m3, Z, 0

  291.     INTERL m6, m2, m7, Z, 4

  292. %endif

  293. %endmacro

  294. 

  295. %macro PUNPCK 3

  296.     mova      %3, %1

  297.     punpckldq %1, %2

  298.     punpckhdq %3, %2

  299. %endmacro

  300. 

  301. %define Z(x) [r0+mmsize*x]

  302. %define Z2(x) [r0+mmsize*x]

  303. %define ZH(x) [r0+mmsize*x+mmsize/2]

  304. 

  305. INIT_YMM avx

  306. 

  307. %if HAVE_AVX_EXTERNAL

  308. align 16

  309. fft8_avx:

  310.     mova      m0, Z(0)

  311.     mova      m1, Z(1)

  312.     T8_AVX    m0, m1, m2, m3, m4

  313.     mova      Z(0), m0

  314.     mova      Z(1), m1

  315.     ret

  316. 

  317. 

  318. align 16

  319. fft16_avx:

  320.     mova       m2, Z(2)

  321.     mova       m3, Z(3)

  322.     T4_SSE     m2, m3, m7

  323. 

  324.     mova       m0, Z(0)

  325.     mova       m1, Z(1)

  326.     T8_AVX     m0, m1, m4, m5, m7

  327. 

  328.     mova       m4, [ps_cos16_1]

  329.     mova       m5, [ps_cos16_2]

  330.     vmulps     m6, m2, m4

  331.     vmulps     m7, m3, m5

  332.     vaddps     m7, m7, m6

  333.     vmulps     m2, m2, m5

  334.     vmulps     m3, m3, m4

  335.     vsubps     m3, m3, m2

  336.     vblendps   m2, m7, m3, 0xf0

  337.     vperm2f128 m3, m7, m3, 0x21

  338.     vaddps     m4, m2, m3

  339.     vsubps     m2, m3, m2

  340.     vperm2f128 m2, m2, m2, 0x01

  341.     vsubps     m3, m1, m2

  342.     vaddps     m1, m1, m2

  343.     vsubps     m5, m0, m4

  344.     vaddps     m0, m0, m4

  345.     vextractf128   Z(0), m0, 0

  346.     vextractf128  ZH(0), m1, 0

  347.     vextractf128   Z(1), m0, 1

  348.     vextractf128  ZH(1), m1, 1

  349.     vextractf128   Z(2), m5, 0

  350.     vextractf128  ZH(2), m3, 0

  351.     vextractf128   Z(3), m5, 1

  352.     vextractf128  ZH(3), m3, 1

  353.     ret

  354. 

  355. align 16

  356. fft32_avx:

  357.     call fft16_avx

  358. 

  359.     mova m0, Z(4)

  360.     mova m1, Z(5)

  361. 

  362.     T4_SSE      m0, m1, m4

  363. 

  364.     mova m2, Z(6)

  365.     mova m3, Z(7)

  366. 

  367.     T8_SSE      m0, m1, m2, m3, m4, m6

  368.     ; m0={r0,r1,r2,r3,r8, r9, r10,r11} m1={i0,i1,i2,i3,i8, i9, i10,i11}

  369.     ; m2={r4,r5,r6,r7,r12,r13,r14,r15} m3={i4,i5,i6,i7,i12,i13,i14,i15}

  370. 

  371.     vperm2f128  m4, m0, m2, 0x20

  372.     vperm2f128  m5, m1, m3, 0x20

  373.     vperm2f128  m6, m0, m2, 0x31

  374.     vperm2f128  m7, m1, m3, 0x31

  375. 

  376.     PASS_SMALL 0, [cos_32], [cos_32+32]

  377. 

  378.     ret

  379. 

  380. fft32_interleave_avx:

  381.     call fft32_avx

  382.     mov r2d, 32

  383. .deint_loop:

  384.     mova     m2, Z(0)

  385.     mova     m3, Z(1)

  386.     vunpcklps      m0, m2, m3

  387.     vunpckhps      m1, m2, m3

  388.     vextractf128   Z(0), m0, 0

  389.     vextractf128  ZH(0), m1, 0

  390.     vextractf128   Z(1), m0, 1

  391.     vextractf128  ZH(1), m1, 1

  392.     add r0, mmsize*2

  393.     sub r2d, mmsize/4

  394.     jg .deint_loop

  395.     ret

  396. 

  397. %endif

  398. 

  399. INIT_XMM sse

  400. 

  401. align 16

  402. fft4_avx:

  403. fft4_sse:

  404.     mova     m0, Z(0)

  405.     mova     m1, Z(1)

  406.     T4_SSE   m0, m1, m2

  407.     mova   Z(0), m0

  408.     mova   Z(1), m1

  409.     ret

  410. 

  411. align 16

  412. fft8_sse:

  413.     mova     m0, Z(0)

  414.     mova     m1, Z(1)

  415.     T4_SSE   m0, m1, m2

  416.     mova     m2, Z(2)

  417.     mova     m3, Z(3)

  418.     T8_SSE   m0, m1, m2, m3, m4, m5

  419.     mova   Z(0), m0

  420.     mova   Z(1), m1

  421.     mova   Z(2), m2

  422.     mova   Z(3), m3

  423.     ret

  424. 

  425. align 16

  426. fft16_sse:

  427.     mova     m0, Z(0)

  428.     mova     m1, Z(1)

  429.     T4_SSE   m0, m1, m2

  430.     mova     m2, Z(2)

  431.     mova     m3, Z(3)

  432.     T8_SSE   m0, m1, m2, m3, m4, m5

  433.     mova     m4, Z(4)

  434.     mova     m5, Z(5)

  435.     mova   Z(0), m0

  436.     mova   Z(1), m1

  437.     mova   Z(2), m2

  438.     mova   Z(3), m3

  439.     T4_SSE   m4, m5, m6

  440.     mova     m6, Z2(6)

  441.     mova     m7, Z2(7)

  442.     T4_SSE   m6, m7, m0

  443.     PASS_SMALL 0, [cos_16], [cos_16+16]

  444.     ret

  445. 

  446. 

  447. %macro FFT48_3DNOW 0

  448. align 16

  449. fft4 %+ SUFFIX:

  450.     T2_3DNOW m0, m1, Z(0), Z(1)

  451.     mova     m2, Z(2)

  452.     mova     m3, Z(3)

  453.     T4_3DNOW m0, m1, m2, m3, m4, m5

  454.     PUNPCK   m0, m1, m4

  455.     PUNPCK   m2, m3, m5

  456.     mova   Z(0), m0

  457.     mova   Z(1), m4

  458.     mova   Z(2), m2

  459.     mova   Z(3), m5

  460.     ret

  461. 

  462. align 16

  463. fft8 %+ SUFFIX:

  464.     T2_3DNOW m0, m1, Z(0), Z(1)

  465.     mova     m2, Z(2)

  466.     mova     m3, Z(3)

  467.     T4_3DNOW m0, m1, m2, m3, m4, m5

  468.     mova   Z(0), m0

  469.     mova   Z(2), m2

  470.     T2_3DNOW m4, m5,  Z(4),  Z(5)

  471.     T2_3DNOW m6, m7, Z2(6), Z2(7)

  472.     PSWAPD   m0, m5

  473.     PSWAPD   m2, m7

  474.     pxor     m0, [ps_m1p1]

  475.     pxor     m2, [ps_m1p1]

  476.     pfsub    m5, m0

  477.     pfadd    m7, m2

  478.     pfmul    m5, [ps_root2]

  479.     pfmul    m7, [ps_root2]

  480.     T4_3DNOW m1, m3, m5, m7, m0, m2

  481.     mova   Z(5), m5

  482.     mova  Z2(7), m7

  483.     mova     m0, Z(0)

  484.     mova     m2, Z(2)

  485.     T4_3DNOW m0, m2, m4, m6, m5, m7

  486.     PUNPCK   m0, m1, m5

  487.     PUNPCK   m2, m3, m7

  488.     mova   Z(0), m0

  489.     mova   Z(1), m5

  490.     mova   Z(2), m2

  491.     mova   Z(3), m7

  492.     PUNPCK   m4,  Z(5), m5

  493.     PUNPCK   m6, Z2(7), m7

  494.     mova   Z(4), m4

  495.     mova   Z(5), m5

  496.     mova  Z2(6), m6

  497.     mova  Z2(7), m7

  498.     ret

  499. %endmacro

  500. 

  501. %if ARCH_X86_32

  502. %macro PSWAPD 2

  503. %if cpuflag(3dnowext)

  504.     pswapd %1, %2

  505. %elifidn %1, %2

  506.     movd [r0+12], %1

  507.     punpckhdq %1, [r0+8]

  508. %else

  509.     movq  %1, %2

  510.     psrlq %1, 32

  511.     punpckldq %1, %2

  512. %endif

  513. %endmacro

  514. 

  515. INIT_MMX 3dnowext

  516. FFT48_3DNOW

  517. 

  518. INIT_MMX 3dnow

  519. FFT48_3DNOW

  520. %endif

  521. 

  522. %define Z(x) [zcq + o1q*(x&6) + mmsize*(x&1)]

  523. %define Z2(x) [zcq + o3q + mmsize*(x&1)]

  524. %define ZH(x) [zcq + o1q*(x&6) + mmsize*(x&1) + mmsize/2]

  525. %define Z2H(x) [zcq + o3q + mmsize*(x&1) + mmsize/2]

  526. 

  527. %macro DECL_PASS 2+ ; name, payload

  528. align 16

  529. %1:

  530. DEFINE_ARGS zc, w, n, o1, o3

  531.     lea o3q, [nq*3]

  532.     lea o1q, [nq*8]

  533.     shl o3q, 4

  534. .loop:

  535.     %2

  536.     add zcq, mmsize*2

  537.     add  wq, mmsize

  538.     sub  nd, mmsize/8

  539.     jg .loop

  540.     rep ret

  541. %endmacro

  542. 

  543. %macro FFT_DISPATCH 2; clobbers 5 GPRs, 8 XMMs

  544.     lea r2, [dispatch_tab%1]

  545.     mov r2, [r2 + (%2q-2)*gprsize]

  546. %ifdef PIC

  547.     lea r3, [$$]

  548.     add r2, r3

  549. %endif

  550.     call r2

  551. %endmacro ; FFT_DISPATCH

  552. 

  553. INIT_YMM avx

  554. 

  555. %if HAVE_AVX_EXTERNAL

  556. %macro INTERL_AVX 5

  557.     vunpckhps      %3, %2, %1

  558.     vunpcklps      %2, %2, %1

  559.     vextractf128   %4(%5), %2, 0

  560.     vextractf128  %4 %+ H(%5), %3, 0

  561.     vextractf128   %4(%5 + 1), %2, 1

  562.     vextractf128  %4 %+ H(%5 + 1), %3, 1

  563. %endmacro

  564. 

  565. %define INTERL INTERL_AVX

  566. 

  567. DECL_PASS pass_avx, PASS_BIG 1

  568. DECL_PASS pass_interleave_avx, PASS_BIG 0

  569. 

  570. cglobal fft_calc, 2,5,8

  571.     mov     r3d, [r0 + FFTContext.nbits]

  572.     mov     r0, r1

  573.     mov     r1, r3

  574.     FFT_DISPATCH _interleave %+ SUFFIX, r1

  575.     REP_RET

  576. 

  577. %endif

  578. 

  579. INIT_XMM sse

  580. 

  581. %macro INTERL_SSE 5

  582.     mova     %3, %2

  583.     unpcklps %2, %1

  584.     unpckhps %3, %1

  585.     mova  %4(%5), %2

  586.     mova  %4(%5+1), %3

  587. %endmacro

  588. 

  589. %define INTERL INTERL_SSE

  590. 

  591. DECL_PASS pass_sse, PASS_BIG 1

  592. DECL_PASS pass_interleave_sse, PASS_BIG 0

  593. 

  594. %macro FFT_CALC_FUNC 0

  595. cglobal fft_calc, 2,5,8

  596.     mov     r3d, [r0 + FFTContext.nbits]

  597.     PUSH    r1

  598.     PUSH    r3

  599.     mov     r0, r1

  600.     mov     r1, r3

  601.     FFT_DISPATCH _interleave %+ SUFFIX, r1

  602.     POP     rcx

  603.     POP     r4

  604.     cmp     rcx, 3+(mmsize/16)

  605.     jg      .end

  606.     mov     r2, -1

  607.     add     rcx, 3

  608.     shl     r2, cl

  609.     sub     r4, r2

  610. .loop:

  611. %if mmsize == 8

  612.     PSWAPD  m0, [r4 + r2 + 4]

  613.     mova [r4 + r2 + 4], m0

  614. %else

  615.     movaps   xmm0, [r4 + r2]

  616.     movaps   xmm1, xmm0

  617.     unpcklps xmm0, [r4 + r2 + 16]

  618.     unpckhps xmm1, [r4 + r2 + 16]

  619.     movaps   [r4 + r2],      xmm0

  620.     movaps   [r4 + r2 + 16], xmm1

  621. %endif

  622.     add      r2, mmsize*2

  623.     jl       .loop

  624. .end:

  625. %if cpuflag(3dnow)

  626.     femms

  627.     RET

  628. %else

  629.     REP_RET

  630. %endif

  631. %endmacro

  632. 

  633. %if ARCH_X86_32

  634. INIT_MMX 3dnow

  635. FFT_CALC_FUNC

  636. INIT_MMX 3dnowext

  637. FFT_CALC_FUNC

  638. %endif

  639. INIT_XMM sse

  640. FFT_CALC_FUNC

  641. 

  642. cglobal fft_permute, 2,7,1

  643.     mov     r4,  [r0 + FFTContext.revtab]

  644.     mov     r5,  [r0 + FFTContext.tmpbuf]

  645.     mov     ecx, [r0 + FFTContext.nbits]

  646.     mov     r2, 1

  647.     shl     r2, cl

  648.     xor     r0, r0

  649. %if ARCH_X86_32

  650.     mov     r1, r1m

  651. %endif

  652. .loop:

  653.     movaps  xmm0, [r1 + 8*r0]

  654.     movzx   r6, word [r4 + 2*r0]

  655.     movzx   r3, word [r4 + 2*r0 + 2]

  656.     movlps  [r5 + 8*r6], xmm0

  657.     movhps  [r5 + 8*r3], xmm0

  658.     add     r0, 2

  659.     cmp     r0, r2

  660.     jl      .loop

  661.     shl     r2, 3

  662.     add     r1, r2

  663.     add     r5, r2

  664.     neg     r2

  665. ; nbits >= 2 (FFT4) and sizeof(FFTComplex)=8 => at least 32B

  666. .loopcopy:

  667.     movaps  xmm0, [r5 + r2]

  668.     movaps  xmm1, [r5 + r2 + 16]

  669.     movaps  [r1 + r2], xmm0

  670.     movaps  [r1 + r2 + 16], xmm1

  671.     add     r2, 32

  672.     jl      .loopcopy

  673.     REP_RET

  674. 

  675. %macro IMDCT_CALC_FUNC 0

  676. cglobal imdct_calc, 3,5,3

  677.     mov     r3d, [r0 + FFTContext.mdctsize]

  678.     mov     r4,  [r0 + FFTContext.imdcthalf]

  679.     add     r1,  r3

  680.     PUSH    r3

  681.     PUSH    r1

  682. %if ARCH_X86_32

  683.     push    r2

  684.     push    r1

  685.     push    r0

  686. %else

  687.     sub     rsp, 8

  688. %endif

  689.     call    r4

  690. %if ARCH_X86_32

  691.     add     esp, 12

  692. %else

  693.     add     rsp, 8

  694. %endif

  695.     POP     r1

  696.     POP     r3

  697.     lea     r0, [r1 + 2*r3]

  698.     mov     r2, r3

  699.     sub     r3, mmsize

  700.     neg     r2

  701.     mova    m2, [ps_m1m1m1m1]

  702. .loop:

  703. %if mmsize == 8

  704.     PSWAPD  m0, [r1 + r3]

  705.     PSWAPD  m1, [r0 + r2]

  706.     pxor    m0, m2

  707. %else

  708.     mova    m0, [r1 + r3]

  709.     mova    m1, [r0 + r2]

  710.     shufps  m0, m0, 0x1b

  711.     shufps  m1, m1, 0x1b

  712.     xorps   m0, m2

  713. %endif

  714.     mova [r0 + r3], m1

  715.     mova [r1 + r2], m0

  716.     sub     r3, mmsize

  717.     add     r2, mmsize

  718.     jl      .loop

  719. %if cpuflag(3dnow)

  720.     femms

  721.     RET

  722. %else

  723.     REP_RET

  724. %endif

  725. %endmacro

  726. 

  727. %if ARCH_X86_32

  728. INIT_MMX 3dnow

  729. IMDCT_CALC_FUNC

  730. INIT_MMX 3dnowext

  731. IMDCT_CALC_FUNC

  732. %endif

  733. 

  734. INIT_XMM sse

  735. IMDCT_CALC_FUNC

  736. 

  737. %if ARCH_X86_32

  738. INIT_MMX 3dnow

  739. %define mulps pfmul

  740. %define addps pfadd

  741. %define subps pfsub

  742. %define unpcklps punpckldq

  743. %define unpckhps punpckhdq

  744. DECL_PASS pass_3dnow, PASS_SMALL 1, [wq], [wq+o1q]

  745. DECL_PASS pass_interleave_3dnow, PASS_BIG 0

  746. %define pass_3dnowext pass_3dnow

  747. %define pass_interleave_3dnowext pass_interleave_3dnow

  748. %endif

  749. 

  750. %ifdef PIC

  751. %define SECTION_REL - $$

  752. %else

  753. %define SECTION_REL

  754. %endif

  755. 

  756. %macro DECL_FFT 1-2 ; nbits, suffix

  757. %ifidn %0, 1

  758. %xdefine fullsuffix SUFFIX

  759. %else

  760. %xdefine fullsuffix %2 %+ SUFFIX

  761. %endif

  762. %xdefine list_of_fft fft4 %+ SUFFIX SECTION_REL, fft8 %+ SUFFIX SECTION_REL

  763. %if %1>=5

  764. %xdefine list_of_fft list_of_fft, fft16 %+ SUFFIX SECTION_REL

  765. %endif

  766. %if %1>=6

  767. %xdefine list_of_fft list_of_fft, fft32 %+ fullsuffix SECTION_REL

  768. %endif

  769. 

  770. %assign n 1<<%1

  771. %rep 17-%1

  772. %assign n2 n/2

  773. %assign n4 n/4

  774. %xdefine list_of_fft list_of_fft, fft %+ n %+ fullsuffix SECTION_REL

  775. 

  776. align 16

  777. fft %+ n %+ fullsuffix:

  778.     call fft %+ n2 %+ SUFFIX

  779.     add r0, n*4 - (n&(-2<<%1))

  780.     call fft %+ n4 %+ SUFFIX

  781.     add r0, n*2 - (n2&(-2<<%1))

  782.     call fft %+ n4 %+ SUFFIX

  783.     sub r0, n*6 + (n2&(-2<<%1))

  784.     lea r1, [cos_ %+ n]

  785.     mov r2d, n4/2

  786.     jmp pass %+ fullsuffix

  787. 

  788. %assign n n*2

  789. %endrep

  790. %undef n

  791. 

  792. align 8

  793. dispatch_tab %+ fullsuffix: pointer list_of_fft

  794. %endmacro ; DECL_FFT

  795. 

  796. %if HAVE_AVX_EXTERNAL

  797. INIT_YMM avx

  798. DECL_FFT 6

  799. DECL_FFT 6, _interleave

  800. %endif

  801. INIT_XMM sse

  802. DECL_FFT 5

  803. DECL_FFT 5, _interleave

  804. %if ARCH_X86_32

  805. INIT_MMX 3dnow

  806. DECL_FFT 4

  807. DECL_FFT 4, _interleave

  808. INIT_MMX 3dnowext

  809. DECL_FFT 4

  810. DECL_FFT 4, _interleave

  811. %endif

  812. 

  813. INIT_XMM sse

  814. %undef mulps

  815. %undef addps

  816. %undef subps

  817. %undef unpcklps

  818. %undef unpckhps

  819. 

  820. %macro PREROTATER 5 ;-2*k, 2*k, input+n4, tcos+n8, tsin+n8

  821. %if mmsize == 8 ; j*2+2-n4, n4-2-j*2, input+n4, tcos+n8, tsin+n8

  822.     PSWAPD     m0, [%3+%2*4]

  823.     movq       m2, [%3+%1*4-8]

  824.     movq       m3, m0

  825.     punpckldq  m0, m2

  826.     punpckhdq  m2, m3

  827.     movd       m1, [%4+%1*2-4] ; tcos[j]

  828.     movd       m3, [%4+%2*2]   ; tcos[n4-j-1]

  829.     punpckldq  m1, [%5+%1*2-4] ; tsin[j]

  830.     punpckldq  m3, [%5+%2*2]   ; tsin[n4-j-1]

  831. 

  832.     mova       m4, m0

  833.     PSWAPD     m5, m1

  834.     pfmul      m0, m1

  835.     pfmul      m4, m5

  836.     mova       m6, m2

  837.     PSWAPD     m5, m3

  838.     pfmul      m2, m3

  839.     pfmul      m6, m5

  840. %if cpuflag(3dnowext)

  841.     pfpnacc    m0, m4

  842.     pfpnacc    m2, m6

  843. %else

  844.     SBUTTERFLY dq, 0, 4, 1

  845.     SBUTTERFLY dq, 2, 6, 3

  846.     pxor       m4, m7

  847.     pxor       m6, m7

  848.     pfadd      m0, m4

  849.     pfadd      m2, m6

  850. %endif

  851. %else

  852.     movaps   xmm0, [%3+%2*4]

  853.     movaps   xmm1, [%3+%1*4-0x10]

  854.     movaps   xmm2, xmm0

  855.     shufps   xmm0, xmm1, 0x88

  856.     shufps   xmm1, xmm2, 0x77

  857.     movlps   xmm4, [%4+%2*2]

  858.     movlps   xmm5, [%5+%2*2+0x0]

  859.     movhps   xmm4, [%4+%1*2-0x8]

  860.     movhps   xmm5, [%5+%1*2-0x8]

  861.     movaps   xmm2, xmm0

  862.     movaps   xmm3, xmm1

  863.     mulps    xmm0, xmm5

  864.     mulps    xmm1, xmm4

  865.     mulps    xmm2, xmm4

  866.     mulps    xmm3, xmm5

  867.     subps    xmm1, xmm0

  868.     addps    xmm2, xmm3

  869.     movaps   xmm0, xmm1

  870.     unpcklps xmm1, xmm2

  871.     unpckhps xmm0, xmm2

  872. %endif

  873. %endmacro

  874. 

  875. %macro CMUL 6 ;j, xmm0, xmm1, 3, 4, 5

  876.     mulps      m6, %3, [%5+%1]

  877.     mulps      m7, %2, [%5+%1]

  878.     mulps      %2, %2, [%6+%1]

  879.     mulps      %3, %3, [%6+%1]

  880.     subps      %2, %2, m6

  881.     addps      %3, %3, m7

  882. %endmacro

  883. 

  884. %macro POSROTATESHUF_AVX 5 ;j, k, z+n8, tcos+n8, tsin+n8

  885. .post:

  886.     vmovaps      ymm1,   [%3+%1*2]

  887.     vmovaps      ymm0,   [%3+%1*2+0x20]

  888.     vmovaps      ymm3,   [%3+%2*2]

  889.     vmovaps      ymm2,   [%3+%2*2+0x20]

  890. 

  891.     CMUL         %1, ymm0, ymm1, %3, %4, %5

  892.     CMUL         %2, ymm2, ymm3, %3, %4, %5

  893.     vshufps      ymm1, ymm1, ymm1, 0x1b

  894.     vshufps      ymm3, ymm3, ymm3, 0x1b

  895.     vperm2f128   ymm1, ymm1, ymm1, 0x01

  896.     vperm2f128   ymm3, ymm3, ymm3, 0x01

  897.     vunpcklps    ymm6, ymm2, ymm1

  898.     vunpckhps    ymm4, ymm2, ymm1

  899.     vunpcklps    ymm7, ymm0, ymm3

  900.     vunpckhps    ymm5, ymm0, ymm3

  901. 

  902.     vextractf128 [%3+%1*2],      ymm7, 0

  903.     vextractf128 [%3+%1*2+0x10], ymm5, 0

  904.     vextractf128 [%3+%1*2+0x20], ymm7, 1

  905.     vextractf128 [%3+%1*2+0x30], ymm5, 1

  906. 

  907.     vextractf128 [%3+%2*2],      ymm6, 0

  908.     vextractf128 [%3+%2*2+0x10], ymm4, 0

  909.     vextractf128 [%3+%2*2+0x20], ymm6, 1

  910.     vextractf128 [%3+%2*2+0x30], ymm4, 1

  911.     sub      %2,   0x20

  912.     add      %1,   0x20

  913.     jl       .post

  914. %endmacro

  915. 

  916. %macro POSROTATESHUF 5 ;j, k, z+n8, tcos+n8, tsin+n8

  917. .post:

  918.     movaps   xmm1, [%3+%1*2]

  919.     movaps   xmm0, [%3+%1*2+0x10]

  920.     CMUL     %1,   xmm0, xmm1, %3, %4, %5

  921.     movaps   xmm5, [%3+%2*2]

  922.     movaps   xmm4, [%3+%2*2+0x10]

  923.     CMUL     %2,   xmm4, xmm5, %3, %4, %5

  924.     shufps   xmm1, xmm1, 0x1b

  925.     shufps   xmm5, xmm5, 0x1b

  926.     movaps   xmm6, xmm4

  927.     unpckhps xmm4, xmm1

  928.     unpcklps xmm6, xmm1

  929.     movaps   xmm2, xmm0

  930.     unpcklps xmm0, xmm5

  931.     unpckhps xmm2, xmm5

  932.     movaps   [%3+%2*2],      xmm6

  933.     movaps   [%3+%2*2+0x10], xmm4

  934.     movaps   [%3+%1*2],      xmm0

  935.     movaps   [%3+%1*2+0x10], xmm2

  936.     sub      %2,   0x10

  937.     add      %1,   0x10

  938.     jl       .post

  939. %endmacro

  940. 

  941. %macro CMUL_3DNOW 6

  942.     mova       m6, [%1+%2*2]

  943.     mova       %3, [%1+%2*2+8]

  944.     mova       %4, m6

  945.     mova       m7, %3

  946.     pfmul      m6, [%5+%2]

  947.     pfmul      %3, [%6+%2]

  948.     pfmul      %4, [%6+%2]

  949.     pfmul      m7, [%5+%2]

  950.     pfsub      %3, m6

  951.     pfadd      %4, m7

  952. %endmacro

  953. 

  954. %macro POSROTATESHUF_3DNOW 5 ;j, k, z+n8, tcos+n8, tsin+n8

  955. .post:

  956.     CMUL_3DNOW %3, %1, m0, m1, %4, %5

  957.     CMUL_3DNOW %3, %2, m2, m3, %4, %5

  958.     movd  [%3+%1*2+ 0], m0

  959.     movd  [%3+%2*2+12], m1

  960.     movd  [%3+%2*2+ 0], m2

  961.     movd  [%3+%1*2+12], m3

  962.     psrlq      m0, 32

  963.     psrlq      m1, 32

  964.     psrlq      m2, 32

  965.     psrlq      m3, 32

  966.     movd  [%3+%1*2+ 8], m0

  967.     movd  [%3+%2*2+ 4], m1

  968.     movd  [%3+%2*2+ 8], m2

  969.     movd  [%3+%1*2+ 4], m3

  970.     sub        %2, 8

  971.     add        %1, 8

  972.     jl         .post

  973. %endmacro

  974. 

  975. %macro DECL_IMDCT 1

  976. cglobal imdct_half, 3,12,8; FFTContext *s, FFTSample *output, const FFTSample *input

  977. %if ARCH_X86_64

  978. %define rrevtab r7

  979. %define rtcos   r8

  980. %define rtsin   r9

  981. %else

  982. %define rrevtab r6

  983. %define rtsin   r6

  984. %define rtcos   r5

  985. %endif

  986.     mov   r3d, [r0+FFTContext.mdctsize]

  987.     add   r2, r3

  988.     shr   r3, 1

  989.     mov   rtcos, [r0+FFTContext.tcos]

  990.     mov   rtsin, [r0+FFTContext.tsin]

  991.     add   rtcos, r3

  992.     add   rtsin, r3

  993. %if ARCH_X86_64 == 0

  994.     push  rtcos

  995.     push  rtsin

  996. %endif

  997.     shr   r3, 1

  998.     mov   rrevtab, [r0+FFTContext.revtab]

  999.     add   rrevtab, r3

  1000. %if ARCH_X86_64 == 0

  1001.     push  rrevtab

  1002. %endif

  1003. 

  1004. %if mmsize == 8

  1005.     sub   r3, 2

  1006. %else

  1007.     sub   r3, 4

  1008. %endif

  1009. %if ARCH_X86_64 || mmsize == 8

  1010.     xor   r4, r4

  1011.     sub   r4, r3

  1012. %endif

  1013. %if notcpuflag(3dnowext) && mmsize == 8

  1014.     movd  m7, [ps_m1m1m1m1]

  1015. %endif

  1016. .pre:

  1017. %if ARCH_X86_64 == 0

  1018. ;unspill

  1019. %if mmsize != 8

  1020.     xor   r4, r4

  1021.     sub   r4, r3

  1022. %endif

  1023.     mov   rtcos, [esp+8]

  1024.     mov   rtsin, [esp+4]

  1025. %endif

  1026. 

  1027.     PREROTATER r4, r3, r2, rtcos, rtsin

  1028. %if mmsize == 8

  1029.     mov    r6, [esp]                ; rrevtab = ptr+n8

  1030.     movzx  r5,  word [rrevtab+r4-2] ; rrevtab[j]

  1031.     movzx  r6,  word [rrevtab+r3]   ; rrevtab[n4-j-1]

  1032.     mova [r1+r5*8], m0

  1033.     mova [r1+r6*8], m2

  1034.     add    r4, 2

  1035.     sub    r3, 2

  1036. %else

  1037. %if ARCH_X86_64

  1038.     movzx  r5,  word [rrevtab+r4-4]

  1039.     movzx  r6,  word [rrevtab+r4-2]

  1040.     movzx  r10, word [rrevtab+r3]

  1041.     movzx  r11, word [rrevtab+r3+2]

  1042.     movlps [r1+r5 *8], xmm0

  1043.     movhps [r1+r6 *8], xmm0

  1044.     movlps [r1+r10*8], xmm1

  1045.     movhps [r1+r11*8], xmm1

  1046.     add    r4, 4

  1047. %else

  1048.     mov    r6, [esp]

  1049.     movzx  r5, word [r6+r4-4]

  1050.     movzx  r4, word [r6+r4-2]

  1051.     movlps [r1+r5*8], xmm0

  1052.     movhps [r1+r4*8], xmm0

  1053.     movzx  r5, word [r6+r3]

  1054.     movzx  r4, word [r6+r3+2]

  1055.     movlps [r1+r5*8], xmm1

  1056.     movhps [r1+r4*8], xmm1

  1057. %endif

  1058.     sub    r3, 4

  1059. %endif

  1060.     jns    .pre

  1061. 

  1062.     mov  r5, r0

  1063.     mov  r6, r1

  1064.     mov  r0, r1

  1065.     mov  r1d, [r5+FFTContext.nbits]

  1066. 

  1067.     FFT_DISPATCH SUFFIX, r1

  1068. 

  1069.     mov  r0d, [r5+FFTContext.mdctsize]

  1070.     add  r6, r0

  1071.     shr  r0, 1

  1072. %if ARCH_X86_64 == 0

  1073. %define rtcos r2

  1074. %define rtsin r3

  1075.     mov  rtcos, [esp+8]

  1076.     mov  rtsin, [esp+4]

  1077. %endif

  1078.     neg  r0

  1079.     mov  r1, -mmsize

  1080.     sub  r1, r0

  1081.     %1 r0, r1, r6, rtcos, rtsin

  1082. %if ARCH_X86_64 == 0

  1083.     add esp, 12

  1084. %endif

  1085. %if mmsize == 8

  1086.     femms

  1087. %endif

  1088.     RET

  1089. %endmacro

  1090. 

  1091. DECL_IMDCT POSROTATESHUF

  1092. 

  1093. %if ARCH_X86_32

  1094. INIT_MMX 3dnow

  1095. DECL_IMDCT POSROTATESHUF_3DNOW

  1096. 

  1097. INIT_MMX 3dnowext

  1098. DECL_IMDCT POSROTATESHUF_3DNOW

  1099. %endif

  1100. 

  1101. INIT_YMM avx

  1102. 

  1103. %if HAVE_AVX_EXTERNAL

  1104. DECL_IMDCT POSROTATESHUF_AVX

  1105. %endif