/media/libjpeg/simd/jimmxint.asm

http://github.com/zpao/v8monkey · Assembly · 852 lines · 597 code · 143 blank · 112 comment · 1 complexity · 0eaf46a641f04a8c2c93ac45b71bb56a MD5 · raw file 

    

  1. ;
    2. 

  2. ; jimmxint.asm - accurate integer IDCT (MMX)
    3. 

  3. ;
    4. 

  4. ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
    5. 

  5. ;
    6. 

  6. ; Based on
    7. 

  7. ; x86 SIMD extension for IJG JPEG library
    8. 

  8. ; Copyright (C) 1999-2006, MIYASAKA Masaru.
    9. 

  9. ; For conditions of distribution and use, see copyright notice in jsimdext.inc
    10. 

  10. ;
    11. 

  11. ; This file should be assembled with NASM (Netwide Assembler),
    12. 

  12. ; can *not* be assembled with Microsoft's MASM or any compatible
    13. 

  13. ; assembler (including Borland's Turbo Assembler).
    14. 

  14. ; NASM is available from http://nasm.sourceforge.net/ or
    15. 

  15. ; http://sourceforge.net/project/showfiles.php?group_id=6208
    16. 

  16. ;
    17. 

  17. ; This file contains a slow-but-accurate integer implementation of the
    18. 

  18. ; inverse DCT (Discrete Cosine Transform). The following code is based
    19. 

  19. ; directly on the IJG's original jidctint.c; see the jidctint.c for
    20. 

  20. ; more details.
    21. 

  21. ;
    22. 

  22. ; [TAB8]
    23. 

  23. 

  24. %include "jsimdext.inc"
    25. 

  25. %include "jdct.inc"
    26. 

  26. 

  27. ; --------------------------------------------------------------------------
    28. 

  28. 

  29. %define CONST_BITS	13
    30. 

  30. %define PASS1_BITS	2
    31. 

  31. 

  32. %define DESCALE_P1	(CONST_BITS-PASS1_BITS)
    33. 

  33. %define DESCALE_P2	(CONST_BITS+PASS1_BITS+3)
    34. 

  34. 

  35. %if CONST_BITS == 13
    36. 

  36. F_0_298	equ	 2446		; FIX(0.298631336)
    37. 

  37. F_0_390	equ	 3196		; FIX(0.390180644)
    38. 

  38. F_0_541	equ	 4433		; FIX(0.541196100)
    39. 

  39. F_0_765	equ	 6270		; FIX(0.765366865)
    40. 

  40. F_0_899	equ	 7373		; FIX(0.899976223)
    41. 

  41. F_1_175	equ	 9633		; FIX(1.175875602)
    42. 

  42. F_1_501	equ	12299		; FIX(1.501321110)
    43. 

  43. F_1_847	equ	15137		; FIX(1.847759065)
    44. 

  44. F_1_961	equ	16069		; FIX(1.961570560)
    45. 

  45. F_2_053	equ	16819		; FIX(2.053119869)
    46. 

  46. F_2_562	equ	20995		; FIX(2.562915447)
    47. 

  47. F_3_072	equ	25172		; FIX(3.072711026)
    48. 

  48. %else
    49. 

  49. ; NASM cannot do compile-time arithmetic on floating-point constants.
    50. 

  50. %define DESCALE(x,n)  (((x)+(1<<((n)-1)))>>(n))
    51. 

  51. F_0_298	equ	DESCALE( 320652955,30-CONST_BITS)	; FIX(0.298631336)
    52. 

  52. F_0_390	equ	DESCALE( 418953276,30-CONST_BITS)	; FIX(0.390180644)
    53. 

  53. F_0_541	equ	DESCALE( 581104887,30-CONST_BITS)	; FIX(0.541196100)
    54. 

  54. F_0_765	equ	DESCALE( 821806413,30-CONST_BITS)	; FIX(0.765366865)
    55. 

  55. F_0_899	equ	DESCALE( 966342111,30-CONST_BITS)	; FIX(0.899976223)
    56. 

  56. F_1_175	equ	DESCALE(1262586813,30-CONST_BITS)	; FIX(1.175875602)
    57. 

  57. F_1_501	equ	DESCALE(1612031267,30-CONST_BITS)	; FIX(1.501321110)
    58. 

  58. F_1_847	equ	DESCALE(1984016188,30-CONST_BITS)	; FIX(1.847759065)
    59. 

  59. F_1_961	equ	DESCALE(2106220350,30-CONST_BITS)	; FIX(1.961570560)
    60. 

  60. F_2_053	equ	DESCALE(2204520673,30-CONST_BITS)	; FIX(2.053119869)
    61. 

  61. F_2_562	equ	DESCALE(2751909506,30-CONST_BITS)	; FIX(2.562915447)
    62. 

  62. F_3_072	equ	DESCALE(3299298341,30-CONST_BITS)	; FIX(3.072711026)
    63. 

  63. %endif
    64. 

  64. 

  65. ; --------------------------------------------------------------------------
    66. 

  66. 	SECTION	SEG_CONST
    67. 

  67. 

  68. 	alignz	16
    69. 

  69. 	global	EXTN(jconst_idct_islow_mmx)
    70. 

  70. 

  71. EXTN(jconst_idct_islow_mmx):
    72. 

  72. 

  73. PW_F130_F054	times 2 dw  (F_0_541+F_0_765), F_0_541
    74. 

  74. PW_F054_MF130	times 2 dw  F_0_541, (F_0_541-F_1_847)
    75. 

  75. PW_MF078_F117	times 2 dw  (F_1_175-F_1_961), F_1_175
    76. 

  76. PW_F117_F078	times 2 dw  F_1_175, (F_1_175-F_0_390)
    77. 

  77. PW_MF060_MF089	times 2 dw  (F_0_298-F_0_899),-F_0_899
    78. 

  78. PW_MF089_F060	times 2 dw -F_0_899, (F_1_501-F_0_899)
    79. 

  79. PW_MF050_MF256	times 2 dw  (F_2_053-F_2_562),-F_2_562
    80. 

  80. PW_MF256_F050	times 2 dw -F_2_562, (F_3_072-F_2_562)
    81. 

  81. PD_DESCALE_P1	times 2 dd  1 << (DESCALE_P1-1)
    82. 

  82. PD_DESCALE_P2	times 2 dd  1 << (DESCALE_P2-1)
    83. 

  83. PB_CENTERJSAMP	times 8 db  CENTERJSAMPLE
    84. 

  84. 

  85. 	alignz	16
    86. 

  86. 

  87. ; --------------------------------------------------------------------------
    88. 

  88. 	SECTION	SEG_TEXT
    89. 

  89. 	BITS	32
    90. 

  90. ;
    91. 

  91. ; Perform dequantization and inverse DCT on one block of coefficients.
    92. 

  92. ;
    93. 

  93. ; GLOBAL(void)
    94. 

  94. ; jsimd_idct_islow_mmx (void * dct_table, JCOEFPTR coef_block,
    95. 

  95. ;                       JSAMPARRAY output_buf, JDIMENSION output_col)
    96. 

  96. ;
    97. 

  97. 

  98. %define dct_table(b)	(b)+8			; jpeg_component_info * compptr
    99. 

  99. %define coef_block(b)	(b)+12		; JCOEFPTR coef_block
    100. 

  100. %define output_buf(b)	(b)+16		; JSAMPARRAY output_buf
    101. 

  101. %define output_col(b)	(b)+20		; JDIMENSION output_col
    102. 

  102. 

  103. %define original_ebp	ebp+0
    104. 

  104. %define wk(i)		ebp-(WK_NUM-(i))*SIZEOF_MMWORD	; mmword wk[WK_NUM]
    105. 

  105. %define WK_NUM		12
    106. 

  106. %define workspace	wk(0)-DCTSIZE2*SIZEOF_JCOEF
    107. 

  107. 					; JCOEF workspace[DCTSIZE2]
    108. 

  108. 

  109. 	align	16
    110. 

  110. 	global	EXTN(jsimd_idct_islow_mmx)
    111. 

  111. 

  112. EXTN(jsimd_idct_islow_mmx):
    113. 

  113. 	push	ebp
    114. 

  114. 	mov	eax,esp				; eax = original ebp
    115. 

  115. 	sub	esp, byte 4
    116. 

  116. 	and	esp, byte (-SIZEOF_MMWORD)	; align to 64 bits
    117. 

  117. 	mov	[esp],eax
    118. 

  118. 	mov	ebp,esp				; ebp = aligned ebp
    119. 

  119. 	lea	esp, [workspace]
    120. 

  120. 	push	ebx
    121. 

  121. ;	push	ecx		; need not be preserved
    122. 

  122. ;	push	edx		; need not be preserved
    123. 

  123. 	push	esi
    124. 

  124. 	push	edi
    125. 

  125. 

  126. 	get_GOT	ebx		; get GOT address
    127. 

  127. 

  128. 	; ---- Pass 1: process columns from input, store into work array.
    129. 

  129. 

  130. ;	mov	eax, [original_ebp]
    131. 

  131. 	mov	edx, POINTER [dct_table(eax)]	; quantptr
    132. 

  132. 	mov	esi, JCOEFPTR [coef_block(eax)]		; inptr
    133. 

  133. 	lea	edi, [workspace]			; JCOEF * wsptr
    134. 

  134. 	mov	ecx, DCTSIZE/4				; ctr
    135. 

  135. 	alignx	16,7
    136. 

  136. .columnloop:
    137. 

  137. %ifndef NO_ZERO_COLUMN_TEST_ISLOW_MMX
    138. 

  138. 	mov	eax, DWORD [DWBLOCK(1,0,esi,SIZEOF_JCOEF)]
    139. 

  139. 	or	eax, DWORD [DWBLOCK(2,0,esi,SIZEOF_JCOEF)]
    140. 

  140. 	jnz	short .columnDCT
    141. 

  141. 

  142. 	movq	mm0, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)]
    143. 

  143. 	movq	mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)]
    144. 

  144. 	por	mm0, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)]
    145. 

  145. 	por	mm1, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)]
    146. 

  146. 	por	mm0, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)]
    147. 

  147. 	por	mm1, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)]
    148. 

  148. 	por	mm0, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)]
    149. 

  149. 	por	mm1,mm0
    150. 

  150. 	packsswb mm1,mm1
    151. 

  151. 	movd	eax,mm1
    152. 

  152. 	test	eax,eax
    153. 

  153. 	jnz	short .columnDCT
    154. 

  154. 

  155. 	; -- AC terms all zero
    156. 

  156. 

  157. 	movq	mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)]
    158. 

  158. 	pmullw	mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
    159. 

  159. 

  160. 	psllw	mm0,PASS1_BITS
    161. 

  161. 

  162. 	movq      mm2,mm0		; mm0=in0=(00 01 02 03)
    163. 

  163. 	punpcklwd mm0,mm0		; mm0=(00 00 01 01)
    164. 

  164. 	punpckhwd mm2,mm2		; mm2=(02 02 03 03)
    165. 

  165. 

  166. 	movq      mm1,mm0
    167. 

  167. 	punpckldq mm0,mm0		; mm0=(00 00 00 00)
    168. 

  168. 	punpckhdq mm1,mm1		; mm1=(01 01 01 01)
    169. 

  169. 	movq      mm3,mm2
    170. 

  170. 	punpckldq mm2,mm2		; mm2=(02 02 02 02)
    171. 

  171. 	punpckhdq mm3,mm3		; mm3=(03 03 03 03)
    172. 

  172. 

  173. 	movq	MMWORD [MMBLOCK(0,0,edi,SIZEOF_JCOEF)], mm0
    174. 

  174. 	movq	MMWORD [MMBLOCK(0,1,edi,SIZEOF_JCOEF)], mm0
    175. 

  175. 	movq	MMWORD [MMBLOCK(1,0,edi,SIZEOF_JCOEF)], mm1
    176. 

  176. 	movq	MMWORD [MMBLOCK(1,1,edi,SIZEOF_JCOEF)], mm1
    177. 

  177. 	movq	MMWORD [MMBLOCK(2,0,edi,SIZEOF_JCOEF)], mm2
    178. 

  178. 	movq	MMWORD [MMBLOCK(2,1,edi,SIZEOF_JCOEF)], mm2
    179. 

  179. 	movq	MMWORD [MMBLOCK(3,0,edi,SIZEOF_JCOEF)], mm3
    180. 

  180. 	movq	MMWORD [MMBLOCK(3,1,edi,SIZEOF_JCOEF)], mm3
    181. 

  181. 	jmp	near .nextcolumn
    182. 

  182. 	alignx	16,7
    183. 

  183. %endif
    184. 

  184. .columnDCT:
    185. 

  185. 

  186. 	; -- Even part
    187. 

  187. 

  188. 	movq	mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)]
    189. 

  189. 	movq	mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)]
    190. 

  190. 	pmullw	mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
    191. 

  191. 	pmullw	mm1, MMWORD [MMBLOCK(2,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
    192. 

  192. 	movq	mm2, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)]
    193. 

  193. 	movq	mm3, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)]
    194. 

  194. 	pmullw	mm2, MMWORD [MMBLOCK(4,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
    195. 

  195. 	pmullw	mm3, MMWORD [MMBLOCK(6,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
    196. 

  196. 

  197. 	; (Original)
    198. 

  198. 	; z1 = (z2 + z3) * 0.541196100;
    199. 

  199. 	; tmp2 = z1 + z3 * -1.847759065;
    200. 

  200. 	; tmp3 = z1 + z2 * 0.765366865;
    201. 

  201. 	;
    202. 

  202. 	; (This implementation)
    203. 

  203. 	; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065);
    204. 

  204. 	; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100;
    205. 

  205. 

  206. 	movq      mm4,mm1		; mm1=in2=z2
    207. 

  207. 	movq      mm5,mm1
    208. 

  208. 	punpcklwd mm4,mm3		; mm3=in6=z3
    209. 

  209. 	punpckhwd mm5,mm3
    210. 

  210. 	movq      mm1,mm4
    211. 

  211. 	movq      mm3,mm5
    212. 

  212. 	pmaddwd   mm4,[GOTOFF(ebx,PW_F130_F054)]	; mm4=tmp3L
    213. 

  213. 	pmaddwd   mm5,[GOTOFF(ebx,PW_F130_F054)]	; mm5=tmp3H
    214. 

  214. 	pmaddwd   mm1,[GOTOFF(ebx,PW_F054_MF130)]	; mm1=tmp2L
    215. 

  215. 	pmaddwd   mm3,[GOTOFF(ebx,PW_F054_MF130)]	; mm3=tmp2H
    216. 

  216. 

  217. 	movq      mm6,mm0
    218. 

  218. 	paddw     mm0,mm2		; mm0=in0+in4
    219. 

  219. 	psubw     mm6,mm2		; mm6=in0-in4
    220. 

  220. 

  221. 	pxor      mm7,mm7
    222. 

  222. 	pxor      mm2,mm2
    223. 

  223. 	punpcklwd mm7,mm0		; mm7=tmp0L
    224. 

  224. 	punpckhwd mm2,mm0		; mm2=tmp0H
    225. 

  225. 	psrad     mm7,(16-CONST_BITS)	; psrad mm7,16 & pslld mm7,CONST_BITS
    226. 

  226. 	psrad     mm2,(16-CONST_BITS)	; psrad mm2,16 & pslld mm2,CONST_BITS
    227. 

  227. 

  228. 	movq	mm0,mm7
    229. 

  229. 	paddd	mm7,mm4			; mm7=tmp10L
    230. 

  230. 	psubd	mm0,mm4			; mm0=tmp13L
    231. 

  231. 	movq	mm4,mm2
    232. 

  232. 	paddd	mm2,mm5			; mm2=tmp10H
    233. 

  233. 	psubd	mm4,mm5			; mm4=tmp13H
    234. 

  234. 

  235. 	movq	MMWORD [wk(0)], mm7	; wk(0)=tmp10L
    236. 

  236. 	movq	MMWORD [wk(1)], mm2	; wk(1)=tmp10H
    237. 

  237. 	movq	MMWORD [wk(2)], mm0	; wk(2)=tmp13L
    238. 

  238. 	movq	MMWORD [wk(3)], mm4	; wk(3)=tmp13H
    239. 

  239. 

  240. 	pxor      mm5,mm5
    241. 

  241. 	pxor      mm7,mm7
    242. 

  242. 	punpcklwd mm5,mm6		; mm5=tmp1L
    243. 

  243. 	punpckhwd mm7,mm6		; mm7=tmp1H
    244. 

  244. 	psrad     mm5,(16-CONST_BITS)	; psrad mm5,16 & pslld mm5,CONST_BITS
    245. 

  245. 	psrad     mm7,(16-CONST_BITS)	; psrad mm7,16 & pslld mm7,CONST_BITS
    246. 

  246. 

  247. 	movq	mm2,mm5
    248. 

  248. 	paddd	mm5,mm1			; mm5=tmp11L
    249. 

  249. 	psubd	mm2,mm1			; mm2=tmp12L
    250. 

  250. 	movq	mm0,mm7
    251. 

  251. 	paddd	mm7,mm3			; mm7=tmp11H
    252. 

  252. 	psubd	mm0,mm3			; mm0=tmp12H
    253. 

  253. 

  254. 	movq	MMWORD [wk(4)], mm5	; wk(4)=tmp11L
    255. 

  255. 	movq	MMWORD [wk(5)], mm7	; wk(5)=tmp11H
    256. 

  256. 	movq	MMWORD [wk(6)], mm2	; wk(6)=tmp12L
    257. 

  257. 	movq	MMWORD [wk(7)], mm0	; wk(7)=tmp12H
    258. 

  258. 

  259. 	; -- Odd part
    260. 

  260. 

  261. 	movq	mm4, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)]
    262. 

  262. 	movq	mm6, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)]
    263. 

  263. 	pmullw	mm4, MMWORD [MMBLOCK(1,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
    264. 

  264. 	pmullw	mm6, MMWORD [MMBLOCK(3,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
    265. 

  265. 	movq	mm1, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)]
    266. 

  266. 	movq	mm3, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)]
    267. 

  267. 	pmullw	mm1, MMWORD [MMBLOCK(5,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
    268. 

  268. 	pmullw	mm3, MMWORD [MMBLOCK(7,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
    269. 

  269. 

  270. 	movq	mm5,mm6
    271. 

  271. 	movq	mm7,mm4
    272. 

  272. 	paddw	mm5,mm3			; mm5=z3
    273. 

  273. 	paddw	mm7,mm1			; mm7=z4
    274. 

  274. 

  275. 	; (Original)
    276. 

  276. 	; z5 = (z3 + z4) * 1.175875602;
    277. 

  277. 	; z3 = z3 * -1.961570560;  z4 = z4 * -0.390180644;
    278. 

  278. 	; z3 += z5;  z4 += z5;
    279. 

  279. 	;
    280. 

  280. 	; (This implementation)
    281. 

  281. 	; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
    282. 

  282. 	; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
    283. 

  283. 

  284. 	movq      mm2,mm5
    285. 

  285. 	movq      mm0,mm5
    286. 

  286. 	punpcklwd mm2,mm7
    287. 

  287. 	punpckhwd mm0,mm7
    288. 

  288. 	movq      mm5,mm2
    289. 

  289. 	movq      mm7,mm0
    290. 

  290. 	pmaddwd   mm2,[GOTOFF(ebx,PW_MF078_F117)]	; mm2=z3L
    291. 

  291. 	pmaddwd   mm0,[GOTOFF(ebx,PW_MF078_F117)]	; mm0=z3H
    292. 

  292. 	pmaddwd   mm5,[GOTOFF(ebx,PW_F117_F078)]	; mm5=z4L
    293. 

  293. 	pmaddwd   mm7,[GOTOFF(ebx,PW_F117_F078)]	; mm7=z4H
    294. 

  294. 

  295. 	movq	MMWORD [wk(10)], mm2	; wk(10)=z3L
    296. 

  296. 	movq	MMWORD [wk(11)], mm0	; wk(11)=z3H
    297. 

  297. 

  298. 	; (Original)
    299. 

  299. 	; z1 = tmp0 + tmp3;  z2 = tmp1 + tmp2;
    300. 

  300. 	; tmp0 = tmp0 * 0.298631336;  tmp1 = tmp1 * 2.053119869;
    301. 

  301. 	; tmp2 = tmp2 * 3.072711026;  tmp3 = tmp3 * 1.501321110;
    302. 

  302. 	; z1 = z1 * -0.899976223;  z2 = z2 * -2.562915447;
    303. 

  303. 	; tmp0 += z1 + z3;  tmp1 += z2 + z4;
    304. 

  304. 	; tmp2 += z2 + z3;  tmp3 += z1 + z4;
    305. 

  305. 	;
    306. 

  306. 	; (This implementation)
    307. 

  307. 	; tmp0 = tmp0 * (0.298631336 - 0.899976223) + tmp3 * -0.899976223;
    308. 

  308. 	; tmp1 = tmp1 * (2.053119869 - 2.562915447) + tmp2 * -2.562915447;
    309. 

  309. 	; tmp2 = tmp1 * -2.562915447 + tmp2 * (3.072711026 - 2.562915447);
    310. 

  310. 	; tmp3 = tmp0 * -0.899976223 + tmp3 * (1.501321110 - 0.899976223);
    311. 

  311. 	; tmp0 += z3;  tmp1 += z4;
    312. 

  312. 	; tmp2 += z3;  tmp3 += z4;
    313. 

  313. 

  314. 	movq      mm2,mm3
    315. 

  315. 	movq      mm0,mm3
    316. 

  316. 	punpcklwd mm2,mm4
    317. 

  317. 	punpckhwd mm0,mm4
    318. 

  318. 	movq      mm3,mm2
    319. 

  319. 	movq      mm4,mm0
    320. 

  320. 	pmaddwd   mm2,[GOTOFF(ebx,PW_MF060_MF089)]	; mm2=tmp0L
    321. 

  321. 	pmaddwd   mm0,[GOTOFF(ebx,PW_MF060_MF089)]	; mm0=tmp0H
    322. 

  322. 	pmaddwd   mm3,[GOTOFF(ebx,PW_MF089_F060)]	; mm3=tmp3L
    323. 

  323. 	pmaddwd   mm4,[GOTOFF(ebx,PW_MF089_F060)]	; mm4=tmp3H
    324. 

  324. 

  325. 	paddd	mm2, MMWORD [wk(10)]	; mm2=tmp0L
    326. 

  326. 	paddd	mm0, MMWORD [wk(11)]	; mm0=tmp0H
    327. 

  327. 	paddd	mm3,mm5			; mm3=tmp3L
    328. 

  328. 	paddd	mm4,mm7			; mm4=tmp3H
    329. 

  329. 

  330. 	movq	MMWORD [wk(8)], mm2	; wk(8)=tmp0L
    331. 

  331. 	movq	MMWORD [wk(9)], mm0	; wk(9)=tmp0H
    332. 

  332. 

  333. 	movq      mm2,mm1
    334. 

  334. 	movq      mm0,mm1
    335. 

  335. 	punpcklwd mm2,mm6
    336. 

  336. 	punpckhwd mm0,mm6
    337. 

  337. 	movq      mm1,mm2
    338. 

  338. 	movq      mm6,mm0
    339. 

  339. 	pmaddwd   mm2,[GOTOFF(ebx,PW_MF050_MF256)]	; mm2=tmp1L
    340. 

  340. 	pmaddwd   mm0,[GOTOFF(ebx,PW_MF050_MF256)]	; mm0=tmp1H
    341. 

  341. 	pmaddwd   mm1,[GOTOFF(ebx,PW_MF256_F050)]	; mm1=tmp2L
    342. 

  342. 	pmaddwd   mm6,[GOTOFF(ebx,PW_MF256_F050)]	; mm6=tmp2H
    343. 

  343. 

  344. 	paddd	mm2,mm5			; mm2=tmp1L
    345. 

  345. 	paddd	mm0,mm7			; mm0=tmp1H
    346. 

  346. 	paddd	mm1, MMWORD [wk(10)]	; mm1=tmp2L
    347. 

  347. 	paddd	mm6, MMWORD [wk(11)]	; mm6=tmp2H
    348. 

  348. 

  349. 	movq	MMWORD [wk(10)], mm2	; wk(10)=tmp1L
    350. 

  350. 	movq	MMWORD [wk(11)], mm0	; wk(11)=tmp1H
    351. 

  351. 

  352. 	; -- Final output stage
    353. 

  353. 

  354. 	movq	mm5, MMWORD [wk(0)]	; mm5=tmp10L
    355. 

  355. 	movq	mm7, MMWORD [wk(1)]	; mm7=tmp10H
    356. 

  356. 

  357. 	movq	mm2,mm5
    358. 

  358. 	movq	mm0,mm7
    359. 

  359. 	paddd	mm5,mm3			; mm5=data0L
    360. 

  360. 	paddd	mm7,mm4			; mm7=data0H
    361. 

  361. 	psubd	mm2,mm3			; mm2=data7L
    362. 

  362. 	psubd	mm0,mm4			; mm0=data7H
    363. 

  363. 

  364. 	movq	mm3,[GOTOFF(ebx,PD_DESCALE_P1)]	; mm3=[PD_DESCALE_P1]
    365. 

  365. 

  366. 	paddd	mm5,mm3
    367. 

  367. 	paddd	mm7,mm3
    368. 

  368. 	psrad	mm5,DESCALE_P1
    369. 

  369. 	psrad	mm7,DESCALE_P1
    370. 

  370. 	paddd	mm2,mm3
    371. 

  371. 	paddd	mm0,mm3
    372. 

  372. 	psrad	mm2,DESCALE_P1
    373. 

  373. 	psrad	mm0,DESCALE_P1
    374. 

  374. 

  375. 	packssdw  mm5,mm7		; mm5=data0=(00 01 02 03)
    376. 

  376. 	packssdw  mm2,mm0		; mm2=data7=(70 71 72 73)
    377. 

  377. 

  378. 	movq	mm4, MMWORD [wk(4)]	; mm4=tmp11L
    379. 

  379. 	movq	mm3, MMWORD [wk(5)]	; mm3=tmp11H
    380. 

  380. 

  381. 	movq	mm7,mm4
    382. 

  382. 	movq	mm0,mm3
    383. 

  383. 	paddd	mm4,mm1			; mm4=data1L
    384. 

  384. 	paddd	mm3,mm6			; mm3=data1H
    385. 

  385. 	psubd	mm7,mm1			; mm7=data6L
    386. 

  386. 	psubd	mm0,mm6			; mm0=data6H
    387. 

  387. 

  388. 	movq	mm1,[GOTOFF(ebx,PD_DESCALE_P1)]	; mm1=[PD_DESCALE_P1]
    389. 

  389. 

  390. 	paddd	mm4,mm1
    391. 

  391. 	paddd	mm3,mm1
    392. 

  392. 	psrad	mm4,DESCALE_P1
    393. 

  393. 	psrad	mm3,DESCALE_P1
    394. 

  394. 	paddd	mm7,mm1
    395. 

  395. 	paddd	mm0,mm1
    396. 

  396. 	psrad	mm7,DESCALE_P1
    397. 

  397. 	psrad	mm0,DESCALE_P1
    398. 

  398. 

  399. 	packssdw  mm4,mm3		; mm4=data1=(10 11 12 13)
    400. 

  400. 	packssdw  mm7,mm0		; mm7=data6=(60 61 62 63)
    401. 

  401. 

  402. 	movq      mm6,mm5		; transpose coefficients(phase 1)
    403. 

  403. 	punpcklwd mm5,mm4		; mm5=(00 10 01 11)
    404. 

  404. 	punpckhwd mm6,mm4		; mm6=(02 12 03 13)
    405. 

  405. 	movq      mm1,mm7		; transpose coefficients(phase 1)
    406. 

  406. 	punpcklwd mm7,mm2		; mm7=(60 70 61 71)
    407. 

  407. 	punpckhwd mm1,mm2		; mm1=(62 72 63 73)
    408. 

  408. 

  409. 	movq	mm3, MMWORD [wk(6)]	; mm3=tmp12L
    410. 

  410. 	movq	mm0, MMWORD [wk(7)]	; mm0=tmp12H
    411. 

  411. 	movq	mm4, MMWORD [wk(10)]	; mm4=tmp1L
    412. 

  412. 	movq	mm2, MMWORD [wk(11)]	; mm2=tmp1H
    413. 

  413. 

  414. 	movq	MMWORD [wk(0)], mm5	; wk(0)=(00 10 01 11)
    415. 

  415. 	movq	MMWORD [wk(1)], mm6	; wk(1)=(02 12 03 13)
    416. 

  416. 	movq	MMWORD [wk(4)], mm7	; wk(4)=(60 70 61 71)
    417. 

  417. 	movq	MMWORD [wk(5)], mm1	; wk(5)=(62 72 63 73)
    418. 

  418. 

  419. 	movq	mm5,mm3
    420. 

  420. 	movq	mm6,mm0
    421. 

  421. 	paddd	mm3,mm4			; mm3=data2L
    422. 

  422. 	paddd	mm0,mm2			; mm0=data2H
    423. 

  423. 	psubd	mm5,mm4			; mm5=data5L
    424. 

  424. 	psubd	mm6,mm2			; mm6=data5H
    425. 

  425. 

  426. 	movq	mm7,[GOTOFF(ebx,PD_DESCALE_P1)]	; mm7=[PD_DESCALE_P1]
    427. 

  427. 

  428. 	paddd	mm3,mm7
    429. 

  429. 	paddd	mm0,mm7
    430. 

  430. 	psrad	mm3,DESCALE_P1
    431. 

  431. 	psrad	mm0,DESCALE_P1
    432. 

  432. 	paddd	mm5,mm7
    433. 

  433. 	paddd	mm6,mm7
    434. 

  434. 	psrad	mm5,DESCALE_P1
    435. 

  435. 	psrad	mm6,DESCALE_P1
    436. 

  436. 

  437. 	packssdw  mm3,mm0		; mm3=data2=(20 21 22 23)
    438. 

  438. 	packssdw  mm5,mm6		; mm5=data5=(50 51 52 53)
    439. 

  439. 

  440. 	movq	mm1, MMWORD [wk(2)]	; mm1=tmp13L
    441. 

  441. 	movq	mm4, MMWORD [wk(3)]	; mm4=tmp13H
    442. 

  442. 	movq	mm2, MMWORD [wk(8)]	; mm2=tmp0L
    443. 

  443. 	movq	mm7, MMWORD [wk(9)]	; mm7=tmp0H
    444. 

  444. 

  445. 	movq	mm0,mm1
    446. 

  446. 	movq	mm6,mm4
    447. 

  447. 	paddd	mm1,mm2			; mm1=data3L
    448. 

  448. 	paddd	mm4,mm7			; mm4=data3H
    449. 

  449. 	psubd	mm0,mm2			; mm0=data4L
    450. 

  450. 	psubd	mm6,mm7			; mm6=data4H
    451. 

  451. 

  452. 	movq	mm2,[GOTOFF(ebx,PD_DESCALE_P1)]	; mm2=[PD_DESCALE_P1]
    453. 

  453. 

  454. 	paddd	mm1,mm2
    455. 

  455. 	paddd	mm4,mm2
    456. 

  456. 	psrad	mm1,DESCALE_P1
    457. 

  457. 	psrad	mm4,DESCALE_P1
    458. 

  458. 	paddd	mm0,mm2
    459. 

  459. 	paddd	mm6,mm2
    460. 

  460. 	psrad	mm0,DESCALE_P1
    461. 

  461. 	psrad	mm6,DESCALE_P1
    462. 

  462. 

  463. 	packssdw  mm1,mm4		; mm1=data3=(30 31 32 33)
    464. 

  464. 	packssdw  mm0,mm6		; mm0=data4=(40 41 42 43)
    465. 

  465. 

  466. 	movq	mm7, MMWORD [wk(0)]	; mm7=(00 10 01 11)
    467. 

  467. 	movq	mm2, MMWORD [wk(1)]	; mm2=(02 12 03 13)
    468. 

  468. 

  469. 	movq      mm4,mm3		; transpose coefficients(phase 1)
    470. 

  470. 	punpcklwd mm3,mm1		; mm3=(20 30 21 31)
    471. 

  471. 	punpckhwd mm4,mm1		; mm4=(22 32 23 33)
    472. 

  472. 	movq      mm6,mm0		; transpose coefficients(phase 1)
    473. 

  473. 	punpcklwd mm0,mm5		; mm0=(40 50 41 51)
    474. 

  474. 	punpckhwd mm6,mm5		; mm6=(42 52 43 53)
    475. 

  475. 

  476. 	movq      mm1,mm7		; transpose coefficients(phase 2)
    477. 

  477. 	punpckldq mm7,mm3		; mm7=(00 10 20 30)
    478. 

  478. 	punpckhdq mm1,mm3		; mm1=(01 11 21 31)
    479. 

  479. 	movq      mm5,mm2		; transpose coefficients(phase 2)
    480. 

  480. 	punpckldq mm2,mm4		; mm2=(02 12 22 32)
    481. 

  481. 	punpckhdq mm5,mm4		; mm5=(03 13 23 33)
    482. 

  482. 

  483. 	movq	mm3, MMWORD [wk(4)]	; mm3=(60 70 61 71)
    484. 

  484. 	movq	mm4, MMWORD [wk(5)]	; mm4=(62 72 63 73)
    485. 

  485. 

  486. 	movq	MMWORD [MMBLOCK(0,0,edi,SIZEOF_JCOEF)], mm7
    487. 

  487. 	movq	MMWORD [MMBLOCK(1,0,edi,SIZEOF_JCOEF)], mm1
    488. 

  488. 	movq	MMWORD [MMBLOCK(2,0,edi,SIZEOF_JCOEF)], mm2
    489. 

  489. 	movq	MMWORD [MMBLOCK(3,0,edi,SIZEOF_JCOEF)], mm5
    490. 

  490. 

  491. 	movq      mm7,mm0		; transpose coefficients(phase 2)
    492. 

  492. 	punpckldq mm0,mm3		; mm0=(40 50 60 70)
    493. 

  493. 	punpckhdq mm7,mm3		; mm7=(41 51 61 71)
    494. 

  494. 	movq      mm1,mm6		; transpose coefficients(phase 2)
    495. 

  495. 	punpckldq mm6,mm4		; mm6=(42 52 62 72)
    496. 

  496. 	punpckhdq mm1,mm4		; mm1=(43 53 63 73)
    497. 

  497. 

  498. 	movq	MMWORD [MMBLOCK(0,1,edi,SIZEOF_JCOEF)], mm0
    499. 

  499. 	movq	MMWORD [MMBLOCK(1,1,edi,SIZEOF_JCOEF)], mm7
    500. 

  500. 	movq	MMWORD [MMBLOCK(2,1,edi,SIZEOF_JCOEF)], mm6
    501. 

  501. 	movq	MMWORD [MMBLOCK(3,1,edi,SIZEOF_JCOEF)], mm1
    502. 

  502. 

  503. .nextcolumn:
    504. 

  504. 	add	esi, byte 4*SIZEOF_JCOEF		; coef_block
    505. 

  505. 	add	edx, byte 4*SIZEOF_ISLOW_MULT_TYPE	; quantptr
    506. 

  506. 	add	edi, byte 4*DCTSIZE*SIZEOF_JCOEF	; wsptr
    507. 

  507. 	dec	ecx					; ctr
    508. 

  508. 	jnz	near .columnloop
    509. 

  509. 

  510. 	; ---- Pass 2: process rows from work array, store into output array.
    511. 

  511. 

  512. 	mov	eax, [original_ebp]
    513. 

  513. 	lea	esi, [workspace]			; JCOEF * wsptr
    514. 

  514. 	mov	edi, JSAMPARRAY [output_buf(eax)]	; (JSAMPROW *)
    515. 

  515. 	mov	eax, JDIMENSION [output_col(eax)]
    516. 

  516. 	mov	ecx, DCTSIZE/4				; ctr
    517. 

  517. 	alignx	16,7
    518. 

  518. .rowloop:
    519. 

  519. 

  520. 	; -- Even part
    521. 

  521. 

  522. 	movq	mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)]
    523. 

  523. 	movq	mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)]
    524. 

  524. 	movq	mm2, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)]
    525. 

  525. 	movq	mm3, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)]
    526. 

  526. 

  527. 	; (Original)
    528. 

  528. 	; z1 = (z2 + z3) * 0.541196100;
    529. 

  529. 	; tmp2 = z1 + z3 * -1.847759065;
    530. 

  530. 	; tmp3 = z1 + z2 * 0.765366865;
    531. 

  531. 	;
    532. 

  532. 	; (This implementation)
    533. 

  533. 	; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065);
    534. 

  534. 	; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100;
    535. 

  535. 

  536. 	movq      mm4,mm1		; mm1=in2=z2
    537. 

  537. 	movq      mm5,mm1
    538. 

  538. 	punpcklwd mm4,mm3		; mm3=in6=z3
    539. 

  539. 	punpckhwd mm5,mm3
    540. 

  540. 	movq      mm1,mm4
    541. 

  541. 	movq      mm3,mm5
    542. 

  542. 	pmaddwd   mm4,[GOTOFF(ebx,PW_F130_F054)]	; mm4=tmp3L
    543. 

  543. 	pmaddwd   mm5,[GOTOFF(ebx,PW_F130_F054)]	; mm5=tmp3H
    544. 

  544. 	pmaddwd   mm1,[GOTOFF(ebx,PW_F054_MF130)]	; mm1=tmp2L
    545. 

  545. 	pmaddwd   mm3,[GOTOFF(ebx,PW_F054_MF130)]	; mm3=tmp2H
    546. 

  546. 

  547. 	movq      mm6,mm0
    548. 

  548. 	paddw     mm0,mm2		; mm0=in0+in4
    549. 

  549. 	psubw     mm6,mm2		; mm6=in0-in4
    550. 

  550. 

  551. 	pxor      mm7,mm7
    552. 

  552. 	pxor      mm2,mm2
    553. 

  553. 	punpcklwd mm7,mm0		; mm7=tmp0L
    554. 

  554. 	punpckhwd mm2,mm0		; mm2=tmp0H
    555. 

  555. 	psrad     mm7,(16-CONST_BITS)	; psrad mm7,16 & pslld mm7,CONST_BITS
    556. 

  556. 	psrad     mm2,(16-CONST_BITS)	; psrad mm2,16 & pslld mm2,CONST_BITS
    557. 

  557. 

  558. 	movq	mm0,mm7
    559. 

  559. 	paddd	mm7,mm4			; mm7=tmp10L
    560. 

  560. 	psubd	mm0,mm4			; mm0=tmp13L
    561. 

  561. 	movq	mm4,mm2
    562. 

  562. 	paddd	mm2,mm5			; mm2=tmp10H
    563. 

  563. 	psubd	mm4,mm5			; mm4=tmp13H
    564. 

  564. 

  565. 	movq	MMWORD [wk(0)], mm7	; wk(0)=tmp10L
    566. 

  566. 	movq	MMWORD [wk(1)], mm2	; wk(1)=tmp10H
    567. 

  567. 	movq	MMWORD [wk(2)], mm0	; wk(2)=tmp13L
    568. 

  568. 	movq	MMWORD [wk(3)], mm4	; wk(3)=tmp13H
    569. 

  569. 

  570. 	pxor      mm5,mm5
    571. 

  571. 	pxor      mm7,mm7
    572. 

  572. 	punpcklwd mm5,mm6		; mm5=tmp1L
    573. 

  573. 	punpckhwd mm7,mm6		; mm7=tmp1H
    574. 

  574. 	psrad     mm5,(16-CONST_BITS)	; psrad mm5,16 & pslld mm5,CONST_BITS
    575. 

  575. 	psrad     mm7,(16-CONST_BITS)	; psrad mm7,16 & pslld mm7,CONST_BITS
    576. 

  576. 

  577. 	movq	mm2,mm5
    578. 

  578. 	paddd	mm5,mm1			; mm5=tmp11L
    579. 

  579. 	psubd	mm2,mm1			; mm2=tmp12L
    580. 

  580. 	movq	mm0,mm7
    581. 

  581. 	paddd	mm7,mm3			; mm7=tmp11H
    582. 

  582. 	psubd	mm0,mm3			; mm0=tmp12H
    583. 

  583. 

  584. 	movq	MMWORD [wk(4)], mm5	; wk(4)=tmp11L
    585. 

  585. 	movq	MMWORD [wk(5)], mm7	; wk(5)=tmp11H
    586. 

  586. 	movq	MMWORD [wk(6)], mm2	; wk(6)=tmp12L
    587. 

  587. 	movq	MMWORD [wk(7)], mm0	; wk(7)=tmp12H
    588. 

  588. 

  589. 	; -- Odd part
    590. 

  590. 

  591. 	movq	mm4, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)]
    592. 

  592. 	movq	mm6, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)]
    593. 

  593. 	movq	mm1, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)]
    594. 

  594. 	movq	mm3, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)]
    595. 

  595. 

  596. 	movq	mm5,mm6
    597. 

  597. 	movq	mm7,mm4
    598. 

  598. 	paddw	mm5,mm3			; mm5=z3
    599. 

  599. 	paddw	mm7,mm1			; mm7=z4
    600. 

  600. 

  601. 	; (Original)
    602. 

  602. 	; z5 = (z3 + z4) * 1.175875602;
    603. 

  603. 	; z3 = z3 * -1.961570560;  z4 = z4 * -0.390180644;
    604. 

  604. 	; z3 += z5;  z4 += z5;
    605. 

  605. 	;
    606. 

  606. 	; (This implementation)
    607. 

  607. 	; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
    608. 

  608. 	; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
    609. 

  609. 

  610. 	movq      mm2,mm5
    611. 

  611. 	movq      mm0,mm5
    612. 

  612. 	punpcklwd mm2,mm7
    613. 

  613. 	punpckhwd mm0,mm7
    614. 

  614. 	movq      mm5,mm2
    615. 

  615. 	movq      mm7,mm0
    616. 

  616. 	pmaddwd   mm2,[GOTOFF(ebx,PW_MF078_F117)]	; mm2=z3L
    617. 

  617. 	pmaddwd   mm0,[GOTOFF(ebx,PW_MF078_F117)]	; mm0=z3H
    618. 

  618. 	pmaddwd   mm5,[GOTOFF(ebx,PW_F117_F078)]	; mm5=z4L
    619. 

  619. 	pmaddwd   mm7,[GOTOFF(ebx,PW_F117_F078)]	; mm7=z4H
    620. 

  620. 

  621. 	movq	MMWORD [wk(10)], mm2	; wk(10)=z3L
    622. 

  622. 	movq	MMWORD [wk(11)], mm0	; wk(11)=z3H
    623. 

  623. 

  624. 	; (Original)
    625. 

  625. 	; z1 = tmp0 + tmp3;  z2 = tmp1 + tmp2;
    626. 

  626. 	; tmp0 = tmp0 * 0.298631336;  tmp1 = tmp1 * 2.053119869;
    627. 

  627. 	; tmp2 = tmp2 * 3.072711026;  tmp3 = tmp3 * 1.501321110;
    628. 

  628. 	; z1 = z1 * -0.899976223;  z2 = z2 * -2.562915447;
    629. 

  629. 	; tmp0 += z1 + z3;  tmp1 += z2 + z4;
    630. 

  630. 	; tmp2 += z2 + z3;  tmp3 += z1 + z4;
    631. 

  631. 	;
    632. 

  632. 	; (This implementation)
    633. 

  633. 	; tmp0 = tmp0 * (0.298631336 - 0.899976223) + tmp3 * -0.899976223;
    634. 

  634. 	; tmp1 = tmp1 * (2.053119869 - 2.562915447) + tmp2 * -2.562915447;
    635. 

  635. 	; tmp2 = tmp1 * -2.562915447 + tmp2 * (3.072711026 - 2.562915447);
    636. 

  636. 	; tmp3 = tmp0 * -0.899976223 + tmp3 * (1.501321110 - 0.899976223);
    637. 

  637. 	; tmp0 += z3;  tmp1 += z4;
    638. 

  638. 	; tmp2 += z3;  tmp3 += z4;
    639. 

  639. 

  640. 	movq      mm2,mm3
    641. 

  641. 	movq      mm0,mm3
    642. 

  642. 	punpcklwd mm2,mm4
    643. 

  643. 	punpckhwd mm0,mm4
    644. 

  644. 	movq      mm3,mm2
    645. 

  645. 	movq      mm4,mm0
    646. 

  646. 	pmaddwd   mm2,[GOTOFF(ebx,PW_MF060_MF089)]	; mm2=tmp0L
    647. 

  647. 	pmaddwd   mm0,[GOTOFF(ebx,PW_MF060_MF089)]	; mm0=tmp0H
    648. 

  648. 	pmaddwd   mm3,[GOTOFF(ebx,PW_MF089_F060)]	; mm3=tmp3L
    649. 

  649. 	pmaddwd   mm4,[GOTOFF(ebx,PW_MF089_F060)]	; mm4=tmp3H
    650. 

  650. 

  651. 	paddd	mm2, MMWORD [wk(10)]	; mm2=tmp0L
    652. 

  652. 	paddd	mm0, MMWORD [wk(11)]	; mm0=tmp0H
    653. 

  653. 	paddd	mm3,mm5			; mm3=tmp3L
    654. 

  654. 	paddd	mm4,mm7			; mm4=tmp3H
    655. 

  655. 

  656. 	movq	MMWORD [wk(8)], mm2	; wk(8)=tmp0L
    657. 

  657. 	movq	MMWORD [wk(9)], mm0	; wk(9)=tmp0H
    658. 

  658. 

  659. 	movq      mm2,mm1
    660. 

  660. 	movq      mm0,mm1
    661. 

  661. 	punpcklwd mm2,mm6
    662. 

  662. 	punpckhwd mm0,mm6
    663. 

  663. 	movq      mm1,mm2
    664. 

  664. 	movq      mm6,mm0
    665. 

  665. 	pmaddwd   mm2,[GOTOFF(ebx,PW_MF050_MF256)]	; mm2=tmp1L
    666. 

  666. 	pmaddwd   mm0,[GOTOFF(ebx,PW_MF050_MF256)]	; mm0=tmp1H
    667. 

  667. 	pmaddwd   mm1,[GOTOFF(ebx,PW_MF256_F050)]	; mm1=tmp2L
    668. 

  668. 	pmaddwd   mm6,[GOTOFF(ebx,PW_MF256_F050)]	; mm6=tmp2H
    669. 

  669. 

  670. 	paddd	mm2,mm5			; mm2=tmp1L
    671. 

  671. 	paddd	mm0,mm7			; mm0=tmp1H
    672. 

  672. 	paddd	mm1, MMWORD [wk(10)]	; mm1=tmp2L
    673. 

  673. 	paddd	mm6, MMWORD [wk(11)]	; mm6=tmp2H
    674. 

  674. 

  675. 	movq	MMWORD [wk(10)], mm2	; wk(10)=tmp1L
    676. 

  676. 	movq	MMWORD [wk(11)], mm0	; wk(11)=tmp1H
    677. 

  677. 

  678. 	; -- Final output stage
    679. 

  679. 

  680. 	movq	mm5, MMWORD [wk(0)]	; mm5=tmp10L
    681. 

  681. 	movq	mm7, MMWORD [wk(1)]	; mm7=tmp10H
    682. 

  682. 

  683. 	movq	mm2,mm5
    684. 

  684. 	movq	mm0,mm7
    685. 

  685. 	paddd	mm5,mm3			; mm5=data0L
    686. 

  686. 	paddd	mm7,mm4			; mm7=data0H
    687. 

  687. 	psubd	mm2,mm3			; mm2=data7L
    688. 

  688. 	psubd	mm0,mm4			; mm0=data7H
    689. 

  689. 

  690. 	movq	mm3,[GOTOFF(ebx,PD_DESCALE_P2)]	; mm3=[PD_DESCALE_P2]
    691. 

  691. 

  692. 	paddd	mm5,mm3
    693. 

  693. 	paddd	mm7,mm3
    694. 

  694. 	psrad	mm5,DESCALE_P2
    695. 

  695. 	psrad	mm7,DESCALE_P2
    696. 

  696. 	paddd	mm2,mm3
    697. 

  697. 	paddd	mm0,mm3
    698. 

  698. 	psrad	mm2,DESCALE_P2
    699. 

  699. 	psrad	mm0,DESCALE_P2
    700. 

  700. 

  701. 	packssdw  mm5,mm7		; mm5=data0=(00 10 20 30)
    702. 

  702. 	packssdw  mm2,mm0		; mm2=data7=(07 17 27 37)
    703. 

  703. 

  704. 	movq	mm4, MMWORD [wk(4)]	; mm4=tmp11L
    705. 

  705. 	movq	mm3, MMWORD [wk(5)]	; mm3=tmp11H
    706. 

  706. 

  707. 	movq	mm7,mm4
    708. 

  708. 	movq	mm0,mm3
    709. 

  709. 	paddd	mm4,mm1			; mm4=data1L
    710. 

  710. 	paddd	mm3,mm6			; mm3=data1H
    711. 

  711. 	psubd	mm7,mm1			; mm7=data6L
    712. 

  712. 	psubd	mm0,mm6			; mm0=data6H
    713. 

  713. 

  714. 	movq	mm1,[GOTOFF(ebx,PD_DESCALE_P2)]	; mm1=[PD_DESCALE_P2]
    715. 

  715. 

  716. 	paddd	mm4,mm1
    717. 

  717. 	paddd	mm3,mm1
    718. 

  718. 	psrad	mm4,DESCALE_P2
    719. 

  719. 	psrad	mm3,DESCALE_P2
    720. 

  720. 	paddd	mm7,mm1
    721. 

  721. 	paddd	mm0,mm1
    722. 

  722. 	psrad	mm7,DESCALE_P2
    723. 

  723. 	psrad	mm0,DESCALE_P2
    724. 

  724. 

  725. 	packssdw  mm4,mm3		; mm4=data1=(01 11 21 31)
    726. 

  726. 	packssdw  mm7,mm0		; mm7=data6=(06 16 26 36)
    727. 

  727. 

  728. 	packsswb  mm5,mm7		; mm5=(00 10 20 30 06 16 26 36)
    729. 

  729. 	packsswb  mm4,mm2		; mm4=(01 11 21 31 07 17 27 37)
    730. 

  730. 

  731. 	movq	mm6, MMWORD [wk(6)]	; mm6=tmp12L
    732. 

  732. 	movq	mm1, MMWORD [wk(7)]	; mm1=tmp12H
    733. 

  733. 	movq	mm3, MMWORD [wk(10)]	; mm3=tmp1L
    734. 

  734. 	movq	mm0, MMWORD [wk(11)]	; mm0=tmp1H
    735. 

  735. 

  736. 	movq	MMWORD [wk(0)], mm5	; wk(0)=(00 10 20 30 06 16 26 36)
    737. 

  737. 	movq	MMWORD [wk(1)], mm4	; wk(1)=(01 11 21 31 07 17 27 37)
    738. 

  738. 

  739. 	movq	mm7,mm6
    740. 

  740. 	movq	mm2,mm1
    741. 

  741. 	paddd	mm6,mm3			; mm6=data2L
    742. 

  742. 	paddd	mm1,mm0			; mm1=data2H
    743. 

  743. 	psubd	mm7,mm3			; mm7=data5L
    744. 

  744. 	psubd	mm2,mm0			; mm2=data5H
    745. 

  745. 

  746. 	movq	mm5,[GOTOFF(ebx,PD_DESCALE_P2)]	; mm5=[PD_DESCALE_P2]
    747. 

  747. 

  748. 	paddd	mm6,mm5
    749. 

  749. 	paddd	mm1,mm5
    750. 

  750. 	psrad	mm6,DESCALE_P2
    751. 

  751. 	psrad	mm1,DESCALE_P2
    752. 

  752. 	paddd	mm7,mm5
    753. 

  753. 	paddd	mm2,mm5
    754. 

  754. 	psrad	mm7,DESCALE_P2
    755. 

  755. 	psrad	mm2,DESCALE_P2
    756. 

  756. 

  757. 	packssdw  mm6,mm1		; mm6=data2=(02 12 22 32)
    758. 

  758. 	packssdw  mm7,mm2		; mm7=data5=(05 15 25 35)
    759. 

  759. 

  760. 	movq	mm4, MMWORD [wk(2)]	; mm4=tmp13L
    761. 

  761. 	movq	mm3, MMWORD [wk(3)]	; mm3=tmp13H
    762. 

  762. 	movq	mm0, MMWORD [wk(8)]	; mm0=tmp0L
    763. 

  763. 	movq	mm5, MMWORD [wk(9)]	; mm5=tmp0H
    764. 

  764. 

  765. 	movq	mm1,mm4
    766. 

  766. 	movq	mm2,mm3
    767. 

  767. 	paddd	mm4,mm0			; mm4=data3L
    768. 

  768. 	paddd	mm3,mm5			; mm3=data3H
    769. 

  769. 	psubd	mm1,mm0			; mm1=data4L
    770. 

  770. 	psubd	mm2,mm5			; mm2=data4H
    771. 

  771. 

  772. 	movq	mm0,[GOTOFF(ebx,PD_DESCALE_P2)]	; mm0=[PD_DESCALE_P2]
    773. 

  773. 

  774. 	paddd	mm4,mm0
    775. 

  775. 	paddd	mm3,mm0
    776. 

  776. 	psrad	mm4,DESCALE_P2
    777. 

  777. 	psrad	mm3,DESCALE_P2
    778. 

  778. 	paddd	mm1,mm0
    779. 

  779. 	paddd	mm2,mm0
    780. 

  780. 	psrad	mm1,DESCALE_P2
    781. 

  781. 	psrad	mm2,DESCALE_P2
    782. 

  782. 

  783. 	movq      mm5,[GOTOFF(ebx,PB_CENTERJSAMP)]	; mm5=[PB_CENTERJSAMP]
    784. 

  784. 

  785. 	packssdw  mm4,mm3		; mm4=data3=(03 13 23 33)
    786. 

  786. 	packssdw  mm1,mm2		; mm1=data4=(04 14 24 34)
    787. 

  787. 

  788. 	movq      mm0, MMWORD [wk(0)]	; mm0=(00 10 20 30 06 16 26 36)
    789. 

  789. 	movq      mm3, MMWORD [wk(1)]	; mm3=(01 11 21 31 07 17 27 37)
    790. 

  790. 

  791. 	packsswb  mm6,mm1		; mm6=(02 12 22 32 04 14 24 34)
    792. 

  792. 	packsswb  mm4,mm7		; mm4=(03 13 23 33 05 15 25 35)
    793. 

  793. 

  794. 	paddb     mm0,mm5
    795. 

  795. 	paddb     mm3,mm5
    796. 

  796. 	paddb     mm6,mm5
    797. 

  797. 	paddb     mm4,mm5
    798. 

  798. 

  799. 	movq      mm2,mm0		; transpose coefficients(phase 1)
    800. 

  800. 	punpcklbw mm0,mm3		; mm0=(00 01 10 11 20 21 30 31)
    801. 

  801. 	punpckhbw mm2,mm3		; mm2=(06 07 16 17 26 27 36 37)
    802. 

  802. 	movq      mm1,mm6		; transpose coefficients(phase 1)
    803. 

  803. 	punpcklbw mm6,mm4		; mm6=(02 03 12 13 22 23 32 33)
    804. 

  804. 	punpckhbw mm1,mm4		; mm1=(04 05 14 15 24 25 34 35)
    805. 

  805. 

  806. 	movq      mm7,mm0		; transpose coefficients(phase 2)
    807. 

  807. 	punpcklwd mm0,mm6		; mm0=(00 01 02 03 10 11 12 13)
    808. 

  808. 	punpckhwd mm7,mm6		; mm7=(20 21 22 23 30 31 32 33)
    809. 

  809. 	movq      mm5,mm1		; transpose coefficients(phase 2)
    810. 

  810. 	punpcklwd mm1,mm2		; mm1=(04 05 06 07 14 15 16 17)
    811. 

  811. 	punpckhwd mm5,mm2		; mm5=(24 25 26 27 34 35 36 37)
    812. 

  812. 

  813. 	movq      mm3,mm0		; transpose coefficients(phase 3)
    814. 

  814. 	punpckldq mm0,mm1		; mm0=(00 01 02 03 04 05 06 07)
    815. 

  815. 	punpckhdq mm3,mm1		; mm3=(10 11 12 13 14 15 16 17)
    816. 

  816. 	movq      mm4,mm7		; transpose coefficients(phase 3)
    817. 

  817. 	punpckldq mm7,mm5		; mm7=(20 21 22 23 24 25 26 27)
    818. 

  818. 	punpckhdq mm4,mm5		; mm4=(30 31 32 33 34 35 36 37)
    819. 

  819. 

  820. 	pushpic	ebx			; save GOT address
    821. 

  821. 

  822. 	mov	edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW]
    823. 

  823. 	mov	ebx, JSAMPROW [edi+1*SIZEOF_JSAMPROW]
    824. 

  824. 	movq	MMWORD [edx+eax*SIZEOF_JSAMPLE], mm0
    825. 

  825. 	movq	MMWORD [ebx+eax*SIZEOF_JSAMPLE], mm3
    826. 

  826. 	mov	edx, JSAMPROW [edi+2*SIZEOF_JSAMPROW]
    827. 

  827. 	mov	ebx, JSAMPROW [edi+3*SIZEOF_JSAMPROW]
    828. 

  828. 	movq	MMWORD [edx+eax*SIZEOF_JSAMPLE], mm7
    829. 

  829. 	movq	MMWORD [ebx+eax*SIZEOF_JSAMPLE], mm4
    830. 

  830. 

  831. 	poppic	ebx			; restore GOT address
    832. 

  832. 

  833. 	add	esi, byte 4*SIZEOF_JCOEF	; wsptr
    834. 

  834. 	add	edi, byte 4*SIZEOF_JSAMPROW
    835. 

  835. 	dec	ecx				; ctr
    836. 

  836. 	jnz	near .rowloop
    837. 

  837. 

  838. 	emms		; empty MMX state
    839. 

  839. 

  840. 	pop	edi
    841. 

  841. 	pop	esi
    842. 

  842. ;	pop	edx		; need not be preserved
    843. 

  843. ;	pop	ecx		; need not be preserved
    844. 

  844. 	pop	ebx
    845. 

  845. 	mov	esp,ebp		; esp <- aligned ebp
    846. 

  846. 	pop	esp		; esp <- original ebp
    847. 

  847. 	pop	ebp
    848. 

  848. 	ret
    849. 

  849. 

  850. ; For some reason, the OS X linker does not honor the request to align the
    851. 

  851. ; segment unless we do this.
    852. 

  852. 	align	16
    853.