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gerrit-public.fairphone.software / platform / external / libjpeg-turbo / b2817f52517361caff3dbab7373abc1b791f3246 / . / simd / jidctfst-sse2.asm
blob: 065842c641f99aff10a2bbc16b2d4d6e2cd7c259 [file] [log] [blame]
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]1;
DRC72130be2014-05-09 20:14:26 +0000[diff] [blame]2; jidctfst.asm - fast integer IDCT (SSE2)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]3;
Pierre Ossmaneea72152009-03-09 13:34:17 +0000[diff] [blame]4; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
5;
6; Based on
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]7; x86 SIMD extension for IJG JPEG library
8; Copyright (C) 1999-2006, MIYASAKA Masaru.
9; For conditions of distribution and use, see copyright notice in jsimdext.inc
10;
11; This file should be assembled with NASM (Netwide Assembler),
12; can *not* be assembled with Microsoft's MASM or any compatible
13; assembler (including Borland's Turbo Assembler).
14; NASM is available from http://nasm.sourceforge.net/ or
15; http://sourceforge.net/project/showfiles.php?group_id=6208
16;
17; This file contains a fast, not so accurate integer implementation of
18; the inverse DCT (Discrete Cosine Transform). The following code is
19; based directly on the IJG's original jidctfst.c; see the jidctfst.c
20; for more details.
21;
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]22; [TAB8]
23
Pierre Ossman3a65ef42009-03-16 13:34:18 +0000[diff] [blame]24%include "jsimdext.inc"
25%include "jdct.inc"
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]26
27; --------------------------------------------------------------------------
28
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]29%define CONST_BITS 8 ; 14 is also OK.
30%define PASS1_BITS 2
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]31
32%if IFAST_SCALE_BITS != PASS1_BITS
33%error "'IFAST_SCALE_BITS' must be equal to 'PASS1_BITS'."
34%endif
35
36%if CONST_BITS == 8
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]37F_1_082 equ 277 ; FIX(1.082392200)
38F_1_414 equ 362 ; FIX(1.414213562)
39F_1_847 equ 473 ; FIX(1.847759065)
40F_2_613 equ 669 ; FIX(2.613125930)
41F_1_613 equ (F_2_613 - 256) ; FIX(2.613125930) - FIX(1)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]42%else
43; NASM cannot do compile-time arithmetic on floating-point constants.
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]44%define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n))
45F_1_082 equ DESCALE(1162209775,30-CONST_BITS) ; FIX(1.082392200)
46F_1_414 equ DESCALE(1518500249,30-CONST_BITS) ; FIX(1.414213562)
47F_1_847 equ DESCALE(1984016188,30-CONST_BITS) ; FIX(1.847759065)
48F_2_613 equ DESCALE(2805822602,30-CONST_BITS) ; FIX(2.613125930)
49F_1_613 equ (F_2_613 - (1 << CONST_BITS)) ; FIX(2.613125930) - FIX(1)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]50%endif
51
52; --------------------------------------------------------------------------
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]53 SECTION SEG_CONST
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]54
55; PRE_MULTIPLY_SCALE_BITS <= 2 (to avoid overflow)
56; CONST_BITS + CONST_SHIFT + PRE_MULTIPLY_SCALE_BITS == 16 (for pmulhw)
57
58%define PRE_MULTIPLY_SCALE_BITS 2
59%define CONST_SHIFT (16 - PRE_MULTIPLY_SCALE_BITS - CONST_BITS)
60
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]61 alignz 16
62 global EXTN(jconst_idct_ifast_sse2)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]63
64EXTN(jconst_idct_ifast_sse2):
65
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]66PW_F1414 times 8 dw F_1_414 << CONST_SHIFT
67PW_F1847 times 8 dw F_1_847 << CONST_SHIFT
68PW_MF1613 times 8 dw -F_1_613 << CONST_SHIFT
69PW_F1082 times 8 dw F_1_082 << CONST_SHIFT
70PB_CENTERJSAMP times 16 db CENTERJSAMPLE
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]71
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]72 alignz 16
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]73
74; --------------------------------------------------------------------------
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]75 SECTION SEG_TEXT
76 BITS 32
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]77;
78; Perform dequantization and inverse DCT on one block of coefficients.
79;
80; GLOBAL(void)
DRCbd498032016-02-19 08:53:33 -0600[diff] [blame]81; jsimd_idct_ifast_sse2 (void *dct_table, JCOEFPTR coef_block,
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]82; JSAMPARRAY output_buf, JDIMENSION output_col)
83;
84
DRCbd498032016-02-19 08:53:33 -0600[diff] [blame]85%define dct_table(b) (b)+8 ; jpeg_component_info *compptr
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]86%define coef_block(b) (b)+12 ; JCOEFPTR coef_block
87%define output_buf(b) (b)+16 ; JSAMPARRAY output_buf
88%define output_col(b) (b)+20 ; JDIMENSION output_col
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]89
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]90%define original_ebp ebp+0
91%define wk(i) ebp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
92%define WK_NUM 2
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]93
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]94 align 16
95 global EXTN(jsimd_idct_ifast_sse2)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]96
Pierre Ossmaneea72152009-03-09 13:34:17 +0000[diff] [blame]97EXTN(jsimd_idct_ifast_sse2):
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]98 push ebp
99 mov eax,esp ; eax = original ebp
100 sub esp, byte 4
101 and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
102 mov [esp],eax
103 mov ebp,esp ; ebp = aligned ebp
104 lea esp, [wk(0)]
105 pushpic ebx
106; push ecx ; unused
107; push edx ; need not be preserved
108 push esi
109 push edi
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]110
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]111 get_GOT ebx ; get GOT address
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]112
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]113 ; ---- Pass 1: process columns from input.
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]114
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]115; mov eax, [original_ebp]
116 mov edx, POINTER [dct_table(eax)] ; quantptr
117 mov esi, JCOEFPTR [coef_block(eax)] ; inptr
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]118
119%ifndef NO_ZERO_COLUMN_TEST_IFAST_SSE2
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]120 mov eax, DWORD [DWBLOCK(1,0,esi,SIZEOF_JCOEF)]
121 or eax, DWORD [DWBLOCK(2,0,esi,SIZEOF_JCOEF)]
122 jnz near .columnDCT
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]123
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]124 movdqa xmm0, XMMWORD [XMMBLOCK(1,0,esi,SIZEOF_JCOEF)]
125 movdqa xmm1, XMMWORD [XMMBLOCK(2,0,esi,SIZEOF_JCOEF)]
126 por xmm0, XMMWORD [XMMBLOCK(3,0,esi,SIZEOF_JCOEF)]
127 por xmm1, XMMWORD [XMMBLOCK(4,0,esi,SIZEOF_JCOEF)]
128 por xmm0, XMMWORD [XMMBLOCK(5,0,esi,SIZEOF_JCOEF)]
129 por xmm1, XMMWORD [XMMBLOCK(6,0,esi,SIZEOF_JCOEF)]
130 por xmm0, XMMWORD [XMMBLOCK(7,0,esi,SIZEOF_JCOEF)]
131 por xmm1,xmm0
132 packsswb xmm1,xmm1
133 packsswb xmm1,xmm1
134 movd eax,xmm1
135 test eax,eax
136 jnz short .columnDCT
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]137
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]138 ; -- AC terms all zero
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]139
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]140 movdqa xmm0, XMMWORD [XMMBLOCK(0,0,esi,SIZEOF_JCOEF)]
141 pmullw xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]142
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]143 movdqa xmm7,xmm0 ; xmm0=in0=(00 01 02 03 04 05 06 07)
144 punpcklwd xmm0,xmm0 ; xmm0=(00 00 01 01 02 02 03 03)
145 punpckhwd xmm7,xmm7 ; xmm7=(04 04 05 05 06 06 07 07)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]146
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]147 pshufd xmm6,xmm0,0x00 ; xmm6=col0=(00 00 00 00 00 00 00 00)
148 pshufd xmm2,xmm0,0x55 ; xmm2=col1=(01 01 01 01 01 01 01 01)
149 pshufd xmm5,xmm0,0xAA ; xmm5=col2=(02 02 02 02 02 02 02 02)
150 pshufd xmm0,xmm0,0xFF ; xmm0=col3=(03 03 03 03 03 03 03 03)
151 pshufd xmm1,xmm7,0x00 ; xmm1=col4=(04 04 04 04 04 04 04 04)
152 pshufd xmm4,xmm7,0x55 ; xmm4=col5=(05 05 05 05 05 05 05 05)
153 pshufd xmm3,xmm7,0xAA ; xmm3=col6=(06 06 06 06 06 06 06 06)
154 pshufd xmm7,xmm7,0xFF ; xmm7=col7=(07 07 07 07 07 07 07 07)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]155
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]156 movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=col1
157 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=col3
158 jmp near .column_end
159 alignx 16,7
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]160%endif
161.columnDCT:
162
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]163 ; -- Even part
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]164
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]165 movdqa xmm0, XMMWORD [XMMBLOCK(0,0,esi,SIZEOF_JCOEF)]
166 movdqa xmm1, XMMWORD [XMMBLOCK(2,0,esi,SIZEOF_JCOEF)]
167 pmullw xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_IFAST_MULT_TYPE)]
168 pmullw xmm1, XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_IFAST_MULT_TYPE)]
169 movdqa xmm2, XMMWORD [XMMBLOCK(4,0,esi,SIZEOF_JCOEF)]
170 movdqa xmm3, XMMWORD [XMMBLOCK(6,0,esi,SIZEOF_JCOEF)]
171 pmullw xmm2, XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_IFAST_MULT_TYPE)]
172 pmullw xmm3, XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_IFAST_MULT_TYPE)]
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]173
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]174 movdqa xmm4,xmm0
175 movdqa xmm5,xmm1
176 psubw xmm0,xmm2 ; xmm0=tmp11
177 psubw xmm1,xmm3
178 paddw xmm4,xmm2 ; xmm4=tmp10
179 paddw xmm5,xmm3 ; xmm5=tmp13
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]180
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]181 psllw xmm1,PRE_MULTIPLY_SCALE_BITS
182 pmulhw xmm1,[GOTOFF(ebx,PW_F1414)]
183 psubw xmm1,xmm5 ; xmm1=tmp12
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]184
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]185 movdqa xmm6,xmm4
186 movdqa xmm7,xmm0
187 psubw xmm4,xmm5 ; xmm4=tmp3
188 psubw xmm0,xmm1 ; xmm0=tmp2
189 paddw xmm6,xmm5 ; xmm6=tmp0
190 paddw xmm7,xmm1 ; xmm7=tmp1
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]191
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]192 movdqa XMMWORD [wk(1)], xmm4 ; wk(1)=tmp3
193 movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=tmp2
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]194
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]195 ; -- Odd part
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]196
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]197 movdqa xmm2, XMMWORD [XMMBLOCK(1,0,esi,SIZEOF_JCOEF)]
198 movdqa xmm3, XMMWORD [XMMBLOCK(3,0,esi,SIZEOF_JCOEF)]
199 pmullw xmm2, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_IFAST_MULT_TYPE)]
200 pmullw xmm3, XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_IFAST_MULT_TYPE)]
201 movdqa xmm5, XMMWORD [XMMBLOCK(5,0,esi,SIZEOF_JCOEF)]
202 movdqa xmm1, XMMWORD [XMMBLOCK(7,0,esi,SIZEOF_JCOEF)]
203 pmullw xmm5, XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_IFAST_MULT_TYPE)]
204 pmullw xmm1, XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_IFAST_MULT_TYPE)]
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]205
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]206 movdqa xmm4,xmm2
207 movdqa xmm0,xmm5
208 psubw xmm2,xmm1 ; xmm2=z12
209 psubw xmm5,xmm3 ; xmm5=z10
210 paddw xmm4,xmm1 ; xmm4=z11
211 paddw xmm0,xmm3 ; xmm0=z13
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]212
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]213 movdqa xmm1,xmm5 ; xmm1=z10(unscaled)
214 psllw xmm2,PRE_MULTIPLY_SCALE_BITS
215 psllw xmm5,PRE_MULTIPLY_SCALE_BITS
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]216
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]217 movdqa xmm3,xmm4
218 psubw xmm4,xmm0
219 paddw xmm3,xmm0 ; xmm3=tmp7
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]220
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]221 psllw xmm4,PRE_MULTIPLY_SCALE_BITS
222 pmulhw xmm4,[GOTOFF(ebx,PW_F1414)] ; xmm4=tmp11
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]223
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]224 ; To avoid overflow...
225 ;
226 ; (Original)
227 ; tmp12 = -2.613125930 * z10 + z5;
228 ;
229 ; (This implementation)
230 ; tmp12 = (-1.613125930 - 1) * z10 + z5;
231 ; = -1.613125930 * z10 - z10 + z5;
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]232
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]233 movdqa xmm0,xmm5
234 paddw xmm5,xmm2
235 pmulhw xmm5,[GOTOFF(ebx,PW_F1847)] ; xmm5=z5
236 pmulhw xmm0,[GOTOFF(ebx,PW_MF1613)]
237 pmulhw xmm2,[GOTOFF(ebx,PW_F1082)]
238 psubw xmm0,xmm1
239 psubw xmm2,xmm5 ; xmm2=tmp10
240 paddw xmm0,xmm5 ; xmm0=tmp12
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]241
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]242 ; -- Final output stage
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]243
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]244 psubw xmm0,xmm3 ; xmm0=tmp6
245 movdqa xmm1,xmm6
246 movdqa xmm5,xmm7
247 paddw xmm6,xmm3 ; xmm6=data0=(00 01 02 03 04 05 06 07)
248 paddw xmm7,xmm0 ; xmm7=data1=(10 11 12 13 14 15 16 17)
249 psubw xmm1,xmm3 ; xmm1=data7=(70 71 72 73 74 75 76 77)
250 psubw xmm5,xmm0 ; xmm5=data6=(60 61 62 63 64 65 66 67)
251 psubw xmm4,xmm0 ; xmm4=tmp5
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]252
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]253 movdqa xmm3,xmm6 ; transpose coefficients(phase 1)
254 punpcklwd xmm6,xmm7 ; xmm6=(00 10 01 11 02 12 03 13)
255 punpckhwd xmm3,xmm7 ; xmm3=(04 14 05 15 06 16 07 17)
256 movdqa xmm0,xmm5 ; transpose coefficients(phase 1)
257 punpcklwd xmm5,xmm1 ; xmm5=(60 70 61 71 62 72 63 73)
258 punpckhwd xmm0,xmm1 ; xmm0=(64 74 65 75 66 76 67 77)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]259
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]260 movdqa xmm7, XMMWORD [wk(0)] ; xmm7=tmp2
261 movdqa xmm1, XMMWORD [wk(1)] ; xmm1=tmp3
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]262
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]263 movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=(60 70 61 71 62 72 63 73)
264 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=(64 74 65 75 66 76 67 77)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]265
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]266 paddw xmm2,xmm4 ; xmm2=tmp4
267 movdqa xmm5,xmm7
268 movdqa xmm0,xmm1
269 paddw xmm7,xmm4 ; xmm7=data2=(20 21 22 23 24 25 26 27)
270 paddw xmm1,xmm2 ; xmm1=data4=(40 41 42 43 44 45 46 47)
271 psubw xmm5,xmm4 ; xmm5=data5=(50 51 52 53 54 55 56 57)
272 psubw xmm0,xmm2 ; xmm0=data3=(30 31 32 33 34 35 36 37)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]273
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]274 movdqa xmm4,xmm7 ; transpose coefficients(phase 1)
275 punpcklwd xmm7,xmm0 ; xmm7=(20 30 21 31 22 32 23 33)
276 punpckhwd xmm4,xmm0 ; xmm4=(24 34 25 35 26 36 27 37)
277 movdqa xmm2,xmm1 ; transpose coefficients(phase 1)
278 punpcklwd xmm1,xmm5 ; xmm1=(40 50 41 51 42 52 43 53)
279 punpckhwd xmm2,xmm5 ; xmm2=(44 54 45 55 46 56 47 57)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]280
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]281 movdqa xmm0,xmm3 ; transpose coefficients(phase 2)
282 punpckldq xmm3,xmm4 ; xmm3=(04 14 24 34 05 15 25 35)
283 punpckhdq xmm0,xmm4 ; xmm0=(06 16 26 36 07 17 27 37)
284 movdqa xmm5,xmm6 ; transpose coefficients(phase 2)
285 punpckldq xmm6,xmm7 ; xmm6=(00 10 20 30 01 11 21 31)
286 punpckhdq xmm5,xmm7 ; xmm5=(02 12 22 32 03 13 23 33)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]287
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]288 movdqa xmm4, XMMWORD [wk(0)] ; xmm4=(60 70 61 71 62 72 63 73)
289 movdqa xmm7, XMMWORD [wk(1)] ; xmm7=(64 74 65 75 66 76 67 77)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]290
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]291 movdqa XMMWORD [wk(0)], xmm3 ; wk(0)=(04 14 24 34 05 15 25 35)
292 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=(06 16 26 36 07 17 27 37)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]293
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]294 movdqa xmm3,xmm1 ; transpose coefficients(phase 2)
295 punpckldq xmm1,xmm4 ; xmm1=(40 50 60 70 41 51 61 71)
296 punpckhdq xmm3,xmm4 ; xmm3=(42 52 62 72 43 53 63 73)
297 movdqa xmm0,xmm2 ; transpose coefficients(phase 2)
298 punpckldq xmm2,xmm7 ; xmm2=(44 54 64 74 45 55 65 75)
299 punpckhdq xmm0,xmm7 ; xmm0=(46 56 66 76 47 57 67 77)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]300
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]301 movdqa xmm4,xmm6 ; transpose coefficients(phase 3)
302 punpcklqdq xmm6,xmm1 ; xmm6=col0=(00 10 20 30 40 50 60 70)
303 punpckhqdq xmm4,xmm1 ; xmm4=col1=(01 11 21 31 41 51 61 71)
304 movdqa xmm7,xmm5 ; transpose coefficients(phase 3)
305 punpcklqdq xmm5,xmm3 ; xmm5=col2=(02 12 22 32 42 52 62 72)
306 punpckhqdq xmm7,xmm3 ; xmm7=col3=(03 13 23 33 43 53 63 73)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]307
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]308 movdqa xmm1, XMMWORD [wk(0)] ; xmm1=(04 14 24 34 05 15 25 35)
309 movdqa xmm3, XMMWORD [wk(1)] ; xmm3=(06 16 26 36 07 17 27 37)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]310
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]311 movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=col1
312 movdqa XMMWORD [wk(1)], xmm7 ; wk(1)=col3
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]313
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]314 movdqa xmm4,xmm1 ; transpose coefficients(phase 3)
315 punpcklqdq xmm1,xmm2 ; xmm1=col4=(04 14 24 34 44 54 64 74)
316 punpckhqdq xmm4,xmm2 ; xmm4=col5=(05 15 25 35 45 55 65 75)
317 movdqa xmm7,xmm3 ; transpose coefficients(phase 3)
318 punpcklqdq xmm3,xmm0 ; xmm3=col6=(06 16 26 36 46 56 66 76)
319 punpckhqdq xmm7,xmm0 ; xmm7=col7=(07 17 27 37 47 57 67 77)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]320.column_end:
321
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]322 ; -- Prefetch the next coefficient block
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]323
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]324 prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 0*32]
325 prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 1*32]
326 prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 2*32]
327 prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 3*32]
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]328
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]329 ; ---- Pass 2: process rows from work array, store into output array.
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]330
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]331 mov eax, [original_ebp]
332 mov edi, JSAMPARRAY [output_buf(eax)] ; (JSAMPROW *)
333 mov eax, JDIMENSION [output_col(eax)]
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]334
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]335 ; -- Even part
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]336
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]337 ; xmm6=col0, xmm5=col2, xmm1=col4, xmm3=col6
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]338
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]339 movdqa xmm2,xmm6
340 movdqa xmm0,xmm5
341 psubw xmm6,xmm1 ; xmm6=tmp11
342 psubw xmm5,xmm3
343 paddw xmm2,xmm1 ; xmm2=tmp10
344 paddw xmm0,xmm3 ; xmm0=tmp13
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]345
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]346 psllw xmm5,PRE_MULTIPLY_SCALE_BITS
347 pmulhw xmm5,[GOTOFF(ebx,PW_F1414)]
348 psubw xmm5,xmm0 ; xmm5=tmp12
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]349
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]350 movdqa xmm1,xmm2
351 movdqa xmm3,xmm6
352 psubw xmm2,xmm0 ; xmm2=tmp3
353 psubw xmm6,xmm5 ; xmm6=tmp2
354 paddw xmm1,xmm0 ; xmm1=tmp0
355 paddw xmm3,xmm5 ; xmm3=tmp1
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]356
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]357 movdqa xmm0, XMMWORD [wk(0)] ; xmm0=col1
358 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=col3
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]359
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]360 movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=tmp3
361 movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=tmp2
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]362
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]363 ; -- Odd part
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]364
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]365 ; xmm0=col1, xmm5=col3, xmm4=col5, xmm7=col7
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]366
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]367 movdqa xmm2,xmm0
368 movdqa xmm6,xmm4
369 psubw xmm0,xmm7 ; xmm0=z12
370 psubw xmm4,xmm5 ; xmm4=z10
371 paddw xmm2,xmm7 ; xmm2=z11
372 paddw xmm6,xmm5 ; xmm6=z13
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]373
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]374 movdqa xmm7,xmm4 ; xmm7=z10(unscaled)
375 psllw xmm0,PRE_MULTIPLY_SCALE_BITS
376 psllw xmm4,PRE_MULTIPLY_SCALE_BITS
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]377
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]378 movdqa xmm5,xmm2
379 psubw xmm2,xmm6
380 paddw xmm5,xmm6 ; xmm5=tmp7
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]381
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]382 psllw xmm2,PRE_MULTIPLY_SCALE_BITS
383 pmulhw xmm2,[GOTOFF(ebx,PW_F1414)] ; xmm2=tmp11
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]384
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]385 ; To avoid overflow...
386 ;
387 ; (Original)
388 ; tmp12 = -2.613125930 * z10 + z5;
389 ;
390 ; (This implementation)
391 ; tmp12 = (-1.613125930 - 1) * z10 + z5;
392 ; = -1.613125930 * z10 - z10 + z5;
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]393
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]394 movdqa xmm6,xmm4
395 paddw xmm4,xmm0
396 pmulhw xmm4,[GOTOFF(ebx,PW_F1847)] ; xmm4=z5
397 pmulhw xmm6,[GOTOFF(ebx,PW_MF1613)]
398 pmulhw xmm0,[GOTOFF(ebx,PW_F1082)]
399 psubw xmm6,xmm7
400 psubw xmm0,xmm4 ; xmm0=tmp10
401 paddw xmm6,xmm4 ; xmm6=tmp12
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]402
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]403 ; -- Final output stage
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]404
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]405 psubw xmm6,xmm5 ; xmm6=tmp6
406 movdqa xmm7,xmm1
407 movdqa xmm4,xmm3
408 paddw xmm1,xmm5 ; xmm1=data0=(00 10 20 30 40 50 60 70)
409 paddw xmm3,xmm6 ; xmm3=data1=(01 11 21 31 41 51 61 71)
410 psraw xmm1,(PASS1_BITS+3) ; descale
411 psraw xmm3,(PASS1_BITS+3) ; descale
412 psubw xmm7,xmm5 ; xmm7=data7=(07 17 27 37 47 57 67 77)
413 psubw xmm4,xmm6 ; xmm4=data6=(06 16 26 36 46 56 66 76)
414 psraw xmm7,(PASS1_BITS+3) ; descale
415 psraw xmm4,(PASS1_BITS+3) ; descale
416 psubw xmm2,xmm6 ; xmm2=tmp5
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]417
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]418 packsswb xmm1,xmm4 ; xmm1=(00 10 20 30 40 50 60 70 06 16 26 36 46 56 66 76)
419 packsswb xmm3,xmm7 ; xmm3=(01 11 21 31 41 51 61 71 07 17 27 37 47 57 67 77)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]420
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]421 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=tmp2
422 movdqa xmm6, XMMWORD [wk(0)] ; xmm6=tmp3
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]423
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]424 paddw xmm0,xmm2 ; xmm0=tmp4
425 movdqa xmm4,xmm5
426 movdqa xmm7,xmm6
427 paddw xmm5,xmm2 ; xmm5=data2=(02 12 22 32 42 52 62 72)
428 paddw xmm6,xmm0 ; xmm6=data4=(04 14 24 34 44 54 64 74)
429 psraw xmm5,(PASS1_BITS+3) ; descale
430 psraw xmm6,(PASS1_BITS+3) ; descale
431 psubw xmm4,xmm2 ; xmm4=data5=(05 15 25 35 45 55 65 75)
432 psubw xmm7,xmm0 ; xmm7=data3=(03 13 23 33 43 53 63 73)
433 psraw xmm4,(PASS1_BITS+3) ; descale
434 psraw xmm7,(PASS1_BITS+3) ; descale
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]435
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]436 movdqa xmm2,[GOTOFF(ebx,PB_CENTERJSAMP)] ; xmm2=[PB_CENTERJSAMP]
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]437
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]438 packsswb xmm5,xmm6 ; xmm5=(02 12 22 32 42 52 62 72 04 14 24 34 44 54 64 74)
439 packsswb xmm7,xmm4 ; xmm7=(03 13 23 33 43 53 63 73 05 15 25 35 45 55 65 75)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]440
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]441 paddb xmm1,xmm2
442 paddb xmm3,xmm2
443 paddb xmm5,xmm2
444 paddb xmm7,xmm2
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]445
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]446 movdqa xmm0,xmm1 ; transpose coefficients(phase 1)
447 punpcklbw xmm1,xmm3 ; xmm1=(00 01 10 11 20 21 30 31 40 41 50 51 60 61 70 71)
448 punpckhbw xmm0,xmm3 ; xmm0=(06 07 16 17 26 27 36 37 46 47 56 57 66 67 76 77)
449 movdqa xmm6,xmm5 ; transpose coefficients(phase 1)
450 punpcklbw xmm5,xmm7 ; xmm5=(02 03 12 13 22 23 32 33 42 43 52 53 62 63 72 73)
451 punpckhbw xmm6,xmm7 ; xmm6=(04 05 14 15 24 25 34 35 44 45 54 55 64 65 74 75)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]452
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]453 movdqa xmm4,xmm1 ; transpose coefficients(phase 2)
454 punpcklwd xmm1,xmm5 ; xmm1=(00 01 02 03 10 11 12 13 20 21 22 23 30 31 32 33)
455 punpckhwd xmm4,xmm5 ; xmm4=(40 41 42 43 50 51 52 53 60 61 62 63 70 71 72 73)
456 movdqa xmm2,xmm6 ; transpose coefficients(phase 2)
457 punpcklwd xmm6,xmm0 ; xmm6=(04 05 06 07 14 15 16 17 24 25 26 27 34 35 36 37)
458 punpckhwd xmm2,xmm0 ; xmm2=(44 45 46 47 54 55 56 57 64 65 66 67 74 75 76 77)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]459
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]460 movdqa xmm3,xmm1 ; transpose coefficients(phase 3)
461 punpckldq xmm1,xmm6 ; xmm1=(00 01 02 03 04 05 06 07 10 11 12 13 14 15 16 17)
462 punpckhdq xmm3,xmm6 ; xmm3=(20 21 22 23 24 25 26 27 30 31 32 33 34 35 36 37)
463 movdqa xmm7,xmm4 ; transpose coefficients(phase 3)
464 punpckldq xmm4,xmm2 ; xmm4=(40 41 42 43 44 45 46 47 50 51 52 53 54 55 56 57)
465 punpckhdq xmm7,xmm2 ; xmm7=(60 61 62 63 64 65 66 67 70 71 72 73 74 75 76 77)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]466
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]467 pshufd xmm5,xmm1,0x4E ; xmm5=(10 11 12 13 14 15 16 17 00 01 02 03 04 05 06 07)
468 pshufd xmm0,xmm3,0x4E ; xmm0=(30 31 32 33 34 35 36 37 20 21 22 23 24 25 26 27)
469 pshufd xmm6,xmm4,0x4E ; xmm6=(50 51 52 53 54 55 56 57 40 41 42 43 44 45 46 47)
470 pshufd xmm2,xmm7,0x4E ; xmm2=(70 71 72 73 74 75 76 77 60 61 62 63 64 65 66 67)
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]471
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]472 mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW]
473 mov esi, JSAMPROW [edi+2*SIZEOF_JSAMPROW]
474 movq XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE], xmm1
475 movq XMM_MMWORD [esi+eax*SIZEOF_JSAMPLE], xmm3
476 mov edx, JSAMPROW [edi+4*SIZEOF_JSAMPROW]
477 mov esi, JSAMPROW [edi+6*SIZEOF_JSAMPROW]
478 movq XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE], xmm4
479 movq XMM_MMWORD [esi+eax*SIZEOF_JSAMPLE], xmm7
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]480
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]481 mov edx, JSAMPROW [edi+1*SIZEOF_JSAMPROW]
482 mov esi, JSAMPROW [edi+3*SIZEOF_JSAMPROW]
483 movq XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE], xmm5
484 movq XMM_MMWORD [esi+eax*SIZEOF_JSAMPLE], xmm0
485 mov edx, JSAMPROW [edi+5*SIZEOF_JSAMPROW]
486 mov esi, JSAMPROW [edi+7*SIZEOF_JSAMPROW]
487 movq XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE], xmm6
488 movq XMM_MMWORD [esi+eax*SIZEOF_JSAMPLE], xmm2
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]489
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]490 pop edi
491 pop esi
492; pop edx ; need not be preserved
493; pop ecx ; unused
494 poppic ebx
495 mov esp,ebp ; esp <- aligned ebp
496 pop esp ; esp <- original ebp
497 pop ebp
498 ret
MIYASAKA Masarua2e6a9d2006-02-04 00:00:00 +0000[diff] [blame]499
DRC132b5fd2009-10-08 09:04:56 +0000[diff] [blame]500; For some reason, the OS X linker does not honor the request to align the
501; segment unless we do this.
DRCe5eaf372014-05-09 18:00:32 +0000[diff] [blame]502 align 16