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Bug 573948 - Part 1: Use libjpeg-turbo instead of libjpeg. r=jmuizelaar
[gecko.git] / jpeg / simd / jdsamss2-64.asm
blobf36c15622581ebdc401e61a8e61211bf929b63e3
1 ;
2 ; jdsamss2-64.asm - upsampling (64-bit SSE2)
3 ;
4 ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
5 ; Copyright 2009 D. R. Commander
6 ;
7 ; Based on
8 ; x86 SIMD extension for IJG JPEG library
9 ; Copyright (C) 1999-2006, MIYASAKA Masaru.
10 ; For conditions of distribution and use, see copyright notice in jsimdext.inc
11 ;
12 ; This file should be assembled with NASM (Netwide Assembler),
13 ; can *not* be assembled with Microsoft's MASM or any compatible
14 ; assembler (including Borland's Turbo Assembler).
15 ; NASM is available from http://nasm.sourceforge.net/ or
16 ; http://sourceforge.net/project/showfiles.php?group_id=6208
17 ;
18 ; [TAB8]
19
20 %include "jsimdext.inc"
21
22 ; --------------------------------------------------------------------------
23 SECTION SEG_CONST
24
25 alignz 16
26 global EXTN(jconst_fancy_upsample_sse2)
27
28 EXTN(jconst_fancy_upsample_sse2):
29
30 PW_ONE times 8 dw 1
31 PW_TWO times 8 dw 2
32 PW_THREE times 8 dw 3
33 PW_SEVEN times 8 dw 7
34 PW_EIGHT times 8 dw 8
35
36 alignz 16
37
38 ; --------------------------------------------------------------------------
39 SECTION SEG_TEXT
40 BITS 64
41 ;
42 ; Fancy processing for the common case of 2:1 horizontal and 1:1 vertical.
43 ;
44 ; The upsampling algorithm is linear interpolation between pixel centers,
45 ; also known as a "triangle filter". This is a good compromise between
46 ; speed and visual quality. The centers of the output pixels are 1/4 and 3/4
47 ; of the way between input pixel centers.
48 ;
49 ; GLOBAL(void)
50 ; jsimd_h2v1_fancy_upsample_sse2 (int max_v_samp_factor,
51 ; JDIMENSION downsampled_width,
52 ; JSAMPARRAY input_data,
53 ; JSAMPARRAY * output_data_ptr);
54 ;
55
56 ; r10 = int max_v_samp_factor
57 ; r11 = JDIMENSION downsampled_width
58 ; r12 = JSAMPARRAY input_data
59 ; r13 = JSAMPARRAY * output_data_ptr
60
61 align 16
62 global EXTN(jsimd_h2v1_fancy_upsample_sse2)
63
64 EXTN(jsimd_h2v1_fancy_upsample_sse2):
65 push rbp
66 mov rax,rsp
67 mov rbp,rsp
68 collect_args
69
70 mov rax, r11 ; colctr
71 test rax,rax
72 jz near .return
73
74 mov rcx, r10 ; rowctr
75 test rcx,rcx
76 jz near .return
77
78 mov rsi, r12 ; input_data
79 mov rdi, r13
80 mov rdi, JSAMPARRAY [rdi] ; output_data
81 .rowloop:
82 push rax ; colctr
83 push rdi
84 push rsi
85
86 mov rsi, JSAMPROW [rsi] ; inptr
87 mov rdi, JSAMPROW [rdi] ; outptr
88
89 test rax, SIZEOF_XMMWORD-1
90 jz short .skip
91 mov dl, JSAMPLE [rsi+(rax-1)*SIZEOF_JSAMPLE]
92 mov JSAMPLE [rsi+rax*SIZEOF_JSAMPLE], dl ; insert a dummy sample
93 .skip:
94 pxor xmm0,xmm0 ; xmm0=(all 0's)
95 pcmpeqb xmm7,xmm7
96 psrldq xmm7,(SIZEOF_XMMWORD-1)
97 pand xmm7, XMMWORD [rsi+0*SIZEOF_XMMWORD]
98
99 add rax, byte SIZEOF_XMMWORD-1
100 and rax, byte -SIZEOF_XMMWORD
101 cmp rax, byte SIZEOF_XMMWORD
102 ja short .columnloop
103
104 .columnloop_last:
105 pcmpeqb xmm6,xmm6
106 pslldq xmm6,(SIZEOF_XMMWORD-1)
107 pand xmm6, XMMWORD [rsi+0*SIZEOF_XMMWORD]
108 jmp short .upsample
109
110 .columnloop:
111 movdqa xmm6, XMMWORD [rsi+1*SIZEOF_XMMWORD]
112 pslldq xmm6,(SIZEOF_XMMWORD-1)
113
114 .upsample:
115 movdqa xmm1, XMMWORD [rsi+0*SIZEOF_XMMWORD]
116 movdqa xmm2,xmm1
117 movdqa xmm3,xmm1 ; xmm1=( 0 1 2 ... 13 14 15)
118 pslldq xmm2,1 ; xmm2=(-- 0 1 ... 12 13 14)
119 psrldq xmm3,1 ; xmm3=( 1 2 3 ... 14 15 --)
120
121 por xmm2,xmm7 ; xmm2=(-1 0 1 ... 12 13 14)
122 por xmm3,xmm6 ; xmm3=( 1 2 3 ... 14 15 16)
123
124 movdqa xmm7,xmm1
125 psrldq xmm7,(SIZEOF_XMMWORD-1) ; xmm7=(15 -- -- ... -- -- --)
126
127 movdqa xmm4,xmm1
128 punpcklbw xmm1,xmm0 ; xmm1=( 0 1 2 3 4 5 6 7)
129 punpckhbw xmm4,xmm0 ; xmm4=( 8 9 10 11 12 13 14 15)
130 movdqa xmm5,xmm2
131 punpcklbw xmm2,xmm0 ; xmm2=(-1 0 1 2 3 4 5 6)
132 punpckhbw xmm5,xmm0 ; xmm5=( 7 8 9 10 11 12 13 14)
133 movdqa xmm6,xmm3
134 punpcklbw xmm3,xmm0 ; xmm3=( 1 2 3 4 5 6 7 8)
135 punpckhbw xmm6,xmm0 ; xmm6=( 9 10 11 12 13 14 15 16)
136
137 pmullw xmm1,[rel PW_THREE]
138 pmullw xmm4,[rel PW_THREE]
139 paddw xmm2,[rel PW_ONE]
140 paddw xmm5,[rel PW_ONE]
141 paddw xmm3,[rel PW_TWO]
142 paddw xmm6,[rel PW_TWO]
143
144 paddw xmm2,xmm1
145 paddw xmm5,xmm4
146 psrlw xmm2,2 ; xmm2=OutLE=( 0 2 4 6 8 10 12 14)
147 psrlw xmm5,2 ; xmm5=OutHE=(16 18 20 22 24 26 28 30)
148 paddw xmm3,xmm1
149 paddw xmm6,xmm4
150 psrlw xmm3,2 ; xmm3=OutLO=( 1 3 5 7 9 11 13 15)
151 psrlw xmm6,2 ; xmm6=OutHO=(17 19 21 23 25 27 29 31)
152
153 psllw xmm3,BYTE_BIT
154 psllw xmm6,BYTE_BIT
155 por xmm2,xmm3 ; xmm2=OutL=( 0 1 2 ... 13 14 15)
156 por xmm5,xmm6 ; xmm5=OutH=(16 17 18 ... 29 30 31)
157
158 movdqa XMMWORD [rdi+0*SIZEOF_XMMWORD], xmm2
159 movdqa XMMWORD [rdi+1*SIZEOF_XMMWORD], xmm5
160
161 sub rax, byte SIZEOF_XMMWORD
162 add rsi, byte 1*SIZEOF_XMMWORD ; inptr
163 add rdi, byte 2*SIZEOF_XMMWORD ; outptr
164 cmp rax, byte SIZEOF_XMMWORD
165 ja near .columnloop
166 test eax,eax
167 jnz near .columnloop_last
168
169 pop rsi
170 pop rdi
171 pop rax
172
173 add rsi, byte SIZEOF_JSAMPROW ; input_data
174 add rdi, byte SIZEOF_JSAMPROW ; output_data
175 dec rcx ; rowctr
176 jg near .rowloop
177
178 .return:
179 uncollect_args
180 pop rbp
181 ret
182
183 ; --------------------------------------------------------------------------
184 ;
185 ; Fancy processing for the common case of 2:1 horizontal and 2:1 vertical.
186 ; Again a triangle filter; see comments for h2v1 case, above.
187 ;
188 ; GLOBAL(void)
189 ; jsimd_h2v2_fancy_upsample_sse2 (int max_v_samp_factor,
190 ; JDIMENSION downsampled_width,
191 ; JSAMPARRAY input_data,
192 ; JSAMPARRAY * output_data_ptr);
193 ;
194
195 ; r10 = int max_v_samp_factor
196 ; r11 = JDIMENSION downsampled_width
197 ; r12 = JSAMPARRAY input_data
198 ; r13 = JSAMPARRAY * output_data_ptr
199
200 %define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
201 %define WK_NUM 4
202
203 align 16
204 global EXTN(jsimd_h2v2_fancy_upsample_sse2)
205
206 EXTN(jsimd_h2v2_fancy_upsample_sse2):
207 push rbp
208 mov rax,rsp ; rax = original rbp
209 sub rsp, byte 4
210 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
211 mov [rsp],rax
212 mov rbp,rsp ; rbp = aligned rbp
213 lea rsp, [wk(0)]
214 collect_args
215 push rbx
216
217 mov rax, r11 ; colctr
218 test rax,rax
219 jz near .return
220
221 mov rcx, r10 ; rowctr
222 test rcx,rcx
223 jz near .return
224
225 mov rsi, r12 ; input_data
226 mov rdi, r13
227 mov rdi, JSAMPARRAY [rdi] ; output_data
228 .rowloop:
229 push rax ; colctr
230 push rcx
231 push rdi
232 push rsi
233
234 mov rcx, JSAMPROW [rsi-1*SIZEOF_JSAMPROW] ; inptr1(above)
235 mov rbx, JSAMPROW [rsi+0*SIZEOF_JSAMPROW] ; inptr0
236 mov rsi, JSAMPROW [rsi+1*SIZEOF_JSAMPROW] ; inptr1(below)
237 mov rdx, JSAMPROW [rdi+0*SIZEOF_JSAMPROW] ; outptr0
238 mov rdi, JSAMPROW [rdi+1*SIZEOF_JSAMPROW] ; outptr1
239
240 test rax, SIZEOF_XMMWORD-1
241 jz short .skip
242 push rdx
243 mov dl, JSAMPLE [rcx+(rax-1)*SIZEOF_JSAMPLE]
244 mov JSAMPLE [rcx+rax*SIZEOF_JSAMPLE], dl
245 mov dl, JSAMPLE [rbx+(rax-1)*SIZEOF_JSAMPLE]
246 mov JSAMPLE [rbx+rax*SIZEOF_JSAMPLE], dl
247 mov dl, JSAMPLE [rsi+(rax-1)*SIZEOF_JSAMPLE]
248 mov JSAMPLE [rsi+rax*SIZEOF_JSAMPLE], dl ; insert a dummy sample
249 pop rdx
250 .skip:
251 ; -- process the first column block
252
253 movdqa xmm0, XMMWORD [rbx+0*SIZEOF_XMMWORD] ; xmm0=row[ 0][0]
254 movdqa xmm1, XMMWORD [rcx+0*SIZEOF_XMMWORD] ; xmm1=row[-1][0]
255 movdqa xmm2, XMMWORD [rsi+0*SIZEOF_XMMWORD] ; xmm2=row[+1][0]
256
257 pxor xmm3,xmm3 ; xmm3=(all 0's)
258 movdqa xmm4,xmm0
259 punpcklbw xmm0,xmm3 ; xmm0=row[ 0]( 0 1 2 3 4 5 6 7)
260 punpckhbw xmm4,xmm3 ; xmm4=row[ 0]( 8 9 10 11 12 13 14 15)
261 movdqa xmm5,xmm1
262 punpcklbw xmm1,xmm3 ; xmm1=row[-1]( 0 1 2 3 4 5 6 7)
263 punpckhbw xmm5,xmm3 ; xmm5=row[-1]( 8 9 10 11 12 13 14 15)
264 movdqa xmm6,xmm2
265 punpcklbw xmm2,xmm3 ; xmm2=row[+1]( 0 1 2 3 4 5 6 7)
266 punpckhbw xmm6,xmm3 ; xmm6=row[+1]( 8 9 10 11 12 13 14 15)
267
268 pmullw xmm0,[rel PW_THREE]
269 pmullw xmm4,[rel PW_THREE]
270
271 pcmpeqb xmm7,xmm7
272 psrldq xmm7,(SIZEOF_XMMWORD-2)
273
274 paddw xmm1,xmm0 ; xmm1=Int0L=( 0 1 2 3 4 5 6 7)
275 paddw xmm5,xmm4 ; xmm5=Int0H=( 8 9 10 11 12 13 14 15)
276 paddw xmm2,xmm0 ; xmm2=Int1L=( 0 1 2 3 4 5 6 7)
277 paddw xmm6,xmm4 ; xmm6=Int1H=( 8 9 10 11 12 13 14 15)
278
279 movdqa XMMWORD [rdx+0*SIZEOF_XMMWORD], xmm1 ; temporarily save
280 movdqa XMMWORD [rdx+1*SIZEOF_XMMWORD], xmm5 ; the intermediate data
281 movdqa XMMWORD [rdi+0*SIZEOF_XMMWORD], xmm2
282 movdqa XMMWORD [rdi+1*SIZEOF_XMMWORD], xmm6
283
284 pand xmm1,xmm7 ; xmm1=( 0 -- -- -- -- -- -- --)
285 pand xmm2,xmm7 ; xmm2=( 0 -- -- -- -- -- -- --)
286
287 movdqa XMMWORD [wk(0)], xmm1
288 movdqa XMMWORD [wk(1)], xmm2
289
290 add rax, byte SIZEOF_XMMWORD-1
291 and rax, byte -SIZEOF_XMMWORD
292 cmp rax, byte SIZEOF_XMMWORD
293 ja short .columnloop
294
295 .columnloop_last:
296 ; -- process the last column block
297
298 pcmpeqb xmm1,xmm1
299 pslldq xmm1,(SIZEOF_XMMWORD-2)
300 movdqa xmm2,xmm1
301
302 pand xmm1, XMMWORD [rdx+1*SIZEOF_XMMWORD]
303 pand xmm2, XMMWORD [rdi+1*SIZEOF_XMMWORD]
304
305 movdqa XMMWORD [wk(2)], xmm1 ; xmm1=(-- -- -- -- -- -- -- 15)
306 movdqa XMMWORD [wk(3)], xmm2 ; xmm2=(-- -- -- -- -- -- -- 15)
307
308 jmp near .upsample
309
310 .columnloop:
311 ; -- process the next column block
312
313 movdqa xmm0, XMMWORD [rbx+1*SIZEOF_XMMWORD] ; xmm0=row[ 0][1]
314 movdqa xmm1, XMMWORD [rcx+1*SIZEOF_XMMWORD] ; xmm1=row[-1][1]
315 movdqa xmm2, XMMWORD [rsi+1*SIZEOF_XMMWORD] ; xmm2=row[+1][1]
316
317 pxor xmm3,xmm3 ; xmm3=(all 0's)
318 movdqa xmm4,xmm0
319 punpcklbw xmm0,xmm3 ; xmm0=row[ 0]( 0 1 2 3 4 5 6 7)
320 punpckhbw xmm4,xmm3 ; xmm4=row[ 0]( 8 9 10 11 12 13 14 15)
321 movdqa xmm5,xmm1
322 punpcklbw xmm1,xmm3 ; xmm1=row[-1]( 0 1 2 3 4 5 6 7)
323 punpckhbw xmm5,xmm3 ; xmm5=row[-1]( 8 9 10 11 12 13 14 15)
324 movdqa xmm6,xmm2
325 punpcklbw xmm2,xmm3 ; xmm2=row[+1]( 0 1 2 3 4 5 6 7)
326 punpckhbw xmm6,xmm3 ; xmm6=row[+1]( 8 9 10 11 12 13 14 15)
327
328 pmullw xmm0,[rel PW_THREE]
329 pmullw xmm4,[rel PW_THREE]
330
331 paddw xmm1,xmm0 ; xmm1=Int0L=( 0 1 2 3 4 5 6 7)
332 paddw xmm5,xmm4 ; xmm5=Int0H=( 8 9 10 11 12 13 14 15)
333 paddw xmm2,xmm0 ; xmm2=Int1L=( 0 1 2 3 4 5 6 7)
334 paddw xmm6,xmm4 ; xmm6=Int1H=( 8 9 10 11 12 13 14 15)
335
336 movdqa XMMWORD [rdx+2*SIZEOF_XMMWORD], xmm1 ; temporarily save
337 movdqa XMMWORD [rdx+3*SIZEOF_XMMWORD], xmm5 ; the intermediate data
338 movdqa XMMWORD [rdi+2*SIZEOF_XMMWORD], xmm2
339 movdqa XMMWORD [rdi+3*SIZEOF_XMMWORD], xmm6
340
341 pslldq xmm1,(SIZEOF_XMMWORD-2) ; xmm1=(-- -- -- -- -- -- -- 0)
342 pslldq xmm2,(SIZEOF_XMMWORD-2) ; xmm2=(-- -- -- -- -- -- -- 0)
343
344 movdqa XMMWORD [wk(2)], xmm1
345 movdqa XMMWORD [wk(3)], xmm2
346
347 .upsample:
348 ; -- process the upper row
349
350 movdqa xmm7, XMMWORD [rdx+0*SIZEOF_XMMWORD]
351 movdqa xmm3, XMMWORD [rdx+1*SIZEOF_XMMWORD]
352
353 movdqa xmm0,xmm7 ; xmm7=Int0L=( 0 1 2 3 4 5 6 7)
354 movdqa xmm4,xmm3 ; xmm3=Int0H=( 8 9 10 11 12 13 14 15)
355 psrldq xmm0,2 ; xmm0=( 1 2 3 4 5 6 7 --)
356 pslldq xmm4,(SIZEOF_XMMWORD-2) ; xmm4=(-- -- -- -- -- -- -- 8)
357 movdqa xmm5,xmm7
358 movdqa xmm6,xmm3
359 psrldq xmm5,(SIZEOF_XMMWORD-2) ; xmm5=( 7 -- -- -- -- -- -- --)
360 pslldq xmm6,2 ; xmm6=(-- 8 9 10 11 12 13 14)
361
362 por xmm0,xmm4 ; xmm0=( 1 2 3 4 5 6 7 8)
363 por xmm5,xmm6 ; xmm5=( 7 8 9 10 11 12 13 14)
364
365 movdqa xmm1,xmm7
366 movdqa xmm2,xmm3
367 pslldq xmm1,2 ; xmm1=(-- 0 1 2 3 4 5 6)
368 psrldq xmm2,2 ; xmm2=( 9 10 11 12 13 14 15 --)
369 movdqa xmm4,xmm3
370 psrldq xmm4,(SIZEOF_XMMWORD-2) ; xmm4=(15 -- -- -- -- -- -- --)
371
372 por xmm1, XMMWORD [wk(0)] ; xmm1=(-1 0 1 2 3 4 5 6)
373 por xmm2, XMMWORD [wk(2)] ; xmm2=( 9 10 11 12 13 14 15 16)
374
375 movdqa XMMWORD [wk(0)], xmm4
376
377 pmullw xmm7,[rel PW_THREE]
378 pmullw xmm3,[rel PW_THREE]
379 paddw xmm1,[rel PW_EIGHT]
380 paddw xmm5,[rel PW_EIGHT]
381 paddw xmm0,[rel PW_SEVEN]
382 paddw xmm2,[rel PW_SEVEN]
383
384 paddw xmm1,xmm7
385 paddw xmm5,xmm3
386 psrlw xmm1,4 ; xmm1=Out0LE=( 0 2 4 6 8 10 12 14)
387 psrlw xmm5,4 ; xmm5=Out0HE=(16 18 20 22 24 26 28 30)
388 paddw xmm0,xmm7
389 paddw xmm2,xmm3
390 psrlw xmm0,4 ; xmm0=Out0LO=( 1 3 5 7 9 11 13 15)
391 psrlw xmm2,4 ; xmm2=Out0HO=(17 19 21 23 25 27 29 31)
392
393 psllw xmm0,BYTE_BIT
394 psllw xmm2,BYTE_BIT
395 por xmm1,xmm0 ; xmm1=Out0L=( 0 1 2 ... 13 14 15)
396 por xmm5,xmm2 ; xmm5=Out0H=(16 17 18 ... 29 30 31)
397
398 movdqa XMMWORD [rdx+0*SIZEOF_XMMWORD], xmm1
399 movdqa XMMWORD [rdx+1*SIZEOF_XMMWORD], xmm5
400
401 ; -- process the lower row
402
403 movdqa xmm6, XMMWORD [rdi+0*SIZEOF_XMMWORD]
404 movdqa xmm4, XMMWORD [rdi+1*SIZEOF_XMMWORD]
405
406 movdqa xmm7,xmm6 ; xmm6=Int1L=( 0 1 2 3 4 5 6 7)
407 movdqa xmm3,xmm4 ; xmm4=Int1H=( 8 9 10 11 12 13 14 15)
408 psrldq xmm7,2 ; xmm7=( 1 2 3 4 5 6 7 --)
409 pslldq xmm3,(SIZEOF_XMMWORD-2) ; xmm3=(-- -- -- -- -- -- -- 8)
410 movdqa xmm0,xmm6
411 movdqa xmm2,xmm4
412 psrldq xmm0,(SIZEOF_XMMWORD-2) ; xmm0=( 7 -- -- -- -- -- -- --)
413 pslldq xmm2,2 ; xmm2=(-- 8 9 10 11 12 13 14)
414
415 por xmm7,xmm3 ; xmm7=( 1 2 3 4 5 6 7 8)
416 por xmm0,xmm2 ; xmm0=( 7 8 9 10 11 12 13 14)
417
418 movdqa xmm1,xmm6
419 movdqa xmm5,xmm4
420 pslldq xmm1,2 ; xmm1=(-- 0 1 2 3 4 5 6)
421 psrldq xmm5,2 ; xmm5=( 9 10 11 12 13 14 15 --)
422 movdqa xmm3,xmm4
423 psrldq xmm3,(SIZEOF_XMMWORD-2) ; xmm3=(15 -- -- -- -- -- -- --)
424
425 por xmm1, XMMWORD [wk(1)] ; xmm1=(-1 0 1 2 3 4 5 6)
426 por xmm5, XMMWORD [wk(3)] ; xmm5=( 9 10 11 12 13 14 15 16)
427
428 movdqa XMMWORD [wk(1)], xmm3
429
430 pmullw xmm6,[rel PW_THREE]
431 pmullw xmm4,[rel PW_THREE]
432 paddw xmm1,[rel PW_EIGHT]
433 paddw xmm0,[rel PW_EIGHT]
434 paddw xmm7,[rel PW_SEVEN]
435 paddw xmm5,[rel PW_SEVEN]
436
437 paddw xmm1,xmm6
438 paddw xmm0,xmm4
439 psrlw xmm1,4 ; xmm1=Out1LE=( 0 2 4 6 8 10 12 14)
440 psrlw xmm0,4 ; xmm0=Out1HE=(16 18 20 22 24 26 28 30)
441 paddw xmm7,xmm6
442 paddw xmm5,xmm4
443 psrlw xmm7,4 ; xmm7=Out1LO=( 1 3 5 7 9 11 13 15)
444 psrlw xmm5,4 ; xmm5=Out1HO=(17 19 21 23 25 27 29 31)
445
446 psllw xmm7,BYTE_BIT
447 psllw xmm5,BYTE_BIT
448 por xmm1,xmm7 ; xmm1=Out1L=( 0 1 2 ... 13 14 15)
449 por xmm0,xmm5 ; xmm0=Out1H=(16 17 18 ... 29 30 31)
450
451 movdqa XMMWORD [rdi+0*SIZEOF_XMMWORD], xmm1
452 movdqa XMMWORD [rdi+1*SIZEOF_XMMWORD], xmm0
453
454 sub rax, byte SIZEOF_XMMWORD
455 add rcx, byte 1*SIZEOF_XMMWORD ; inptr1(above)
456 add rbx, byte 1*SIZEOF_XMMWORD ; inptr0
457 add rsi, byte 1*SIZEOF_XMMWORD ; inptr1(below)
458 add rdx, byte 2*SIZEOF_XMMWORD ; outptr0
459 add rdi, byte 2*SIZEOF_XMMWORD ; outptr1
460 cmp rax, byte SIZEOF_XMMWORD
461 ja near .columnloop
462 test rax,rax
463 jnz near .columnloop_last
464
465 pop rsi
466 pop rdi
467 pop rcx
468 pop rax
469
470 add rsi, byte 1*SIZEOF_JSAMPROW ; input_data
471 add rdi, byte 2*SIZEOF_JSAMPROW ; output_data
472 sub rcx, byte 2 ; rowctr
473 jg near .rowloop
474
475 .return:
476 pop rbx
477 uncollect_args
478 mov rsp,rbp ; rsp <- aligned rbp
479 pop rsp ; rsp <- original rbp
480 pop rbp
481 ret
482
483 ; --------------------------------------------------------------------------
484 ;
485 ; Fast processing for the common case of 2:1 horizontal and 1:1 vertical.
486 ; It's still a box filter.
487 ;
488 ; GLOBAL(void)
489 ; jsimd_h2v1_upsample_sse2 (int max_v_samp_factor,
490 ; JDIMENSION output_width,
491 ; JSAMPARRAY input_data,
492 ; JSAMPARRAY * output_data_ptr);
493 ;
494
495 ; r10 = int max_v_samp_factor
496 ; r11 = JDIMENSION output_width
497 ; r12 = JSAMPARRAY input_data
498 ; r13 = JSAMPARRAY * output_data_ptr
499
500 align 16
501 global EXTN(jsimd_h2v1_upsample_sse2)
502
503 EXTN(jsimd_h2v1_upsample_sse2):
504 push rbp
505 mov rax,rsp
506 mov rbp,rsp
507 collect_args
508
509 mov rdx, r11
510 add rdx, byte (2*SIZEOF_XMMWORD)-1
511 and rdx, byte -(2*SIZEOF_XMMWORD)
512 jz near .return
513
514 mov rcx, r10 ; rowctr
515 test rcx,rcx
516 jz short .return
517
518 mov rsi, r12 ; input_data
519 mov rdi, r13
520 mov rdi, JSAMPARRAY [rdi] ; output_data
521 .rowloop:
522 push rdi
523 push rsi
524
525 mov rsi, JSAMPROW [rsi] ; inptr
526 mov rdi, JSAMPROW [rdi] ; outptr
527 mov rax,rdx ; colctr
528 .columnloop:
529
530 movdqa xmm0, XMMWORD [rsi+0*SIZEOF_XMMWORD]
531
532 movdqa xmm1,xmm0
533 punpcklbw xmm0,xmm0
534 punpckhbw xmm1,xmm1
535
536 movdqa XMMWORD [rdi+0*SIZEOF_XMMWORD], xmm0
537 movdqa XMMWORD [rdi+1*SIZEOF_XMMWORD], xmm1
538
539 sub rax, byte 2*SIZEOF_XMMWORD
540 jz short .nextrow
541
542 movdqa xmm2, XMMWORD [rsi+1*SIZEOF_XMMWORD]
543
544 movdqa xmm3,xmm2
545 punpcklbw xmm2,xmm2
546 punpckhbw xmm3,xmm3
547
548 movdqa XMMWORD [rdi+2*SIZEOF_XMMWORD], xmm2
549 movdqa XMMWORD [rdi+3*SIZEOF_XMMWORD], xmm3
550
551 sub rax, byte 2*SIZEOF_XMMWORD
552 jz short .nextrow
553
554 add rsi, byte 2*SIZEOF_XMMWORD ; inptr
555 add rdi, byte 4*SIZEOF_XMMWORD ; outptr
556 jmp short .columnloop
557
558 .nextrow:
559 pop rsi
560 pop rdi
561
562 add rsi, byte SIZEOF_JSAMPROW ; input_data
563 add rdi, byte SIZEOF_JSAMPROW ; output_data
564 dec rcx ; rowctr
565 jg short .rowloop
566
567 .return:
568 uncollect_args
569 pop rbp
570 ret
571
572 ; --------------------------------------------------------------------------
573 ;
574 ; Fast processing for the common case of 2:1 horizontal and 2:1 vertical.
575 ; It's still a box filter.
576 ;
577 ; GLOBAL(void)
578 ; jsimd_h2v2_upsample_sse2 (nt max_v_samp_factor,
579 ; JDIMENSION output_width,
580 ; JSAMPARRAY input_data,
581 ; JSAMPARRAY * output_data_ptr);
582 ;
583
584 ; r10 = int max_v_samp_factor
585 ; r11 = JDIMENSION output_width
586 ; r12 = JSAMPARRAY input_data
587 ; r13 = JSAMPARRAY * output_data_ptr
588
589 align 16
590 global EXTN(jsimd_h2v2_upsample_sse2)
591
592 EXTN(jsimd_h2v2_upsample_sse2):
593 push rbp
594 mov rax,rsp
595 mov rbp,rsp
596 collect_args
597 push rbx
598
599 mov rdx, r11
600 add rdx, byte (2*SIZEOF_XMMWORD)-1
601 and rdx, byte -(2*SIZEOF_XMMWORD)
602 jz near .return
603
604 mov rcx, r10 ; rowctr
605 test rcx,rcx
606 jz near .return
607
608 mov rsi, r12 ; input_data
609 mov rdi, r13
610 mov rdi, JSAMPARRAY [rdi] ; output_data
611 .rowloop:
612 push rdi
613 push rsi
614
615 mov rsi, JSAMPROW [rsi] ; inptr
616 mov rbx, JSAMPROW [rdi+0*SIZEOF_JSAMPROW] ; outptr0
617 mov rdi, JSAMPROW [rdi+1*SIZEOF_JSAMPROW] ; outptr1
618 mov rax,rdx ; colctr
619 .columnloop:
620
621 movdqa xmm0, XMMWORD [rsi+0*SIZEOF_XMMWORD]
622
623 movdqa xmm1,xmm0
624 punpcklbw xmm0,xmm0
625 punpckhbw xmm1,xmm1
626
627 movdqa XMMWORD [rbx+0*SIZEOF_XMMWORD], xmm0
628 movdqa XMMWORD [rbx+1*SIZEOF_XMMWORD], xmm1
629 movdqa XMMWORD [rdi+0*SIZEOF_XMMWORD], xmm0
630 movdqa XMMWORD [rdi+1*SIZEOF_XMMWORD], xmm1
631
632 sub rax, byte 2*SIZEOF_XMMWORD
633 jz short .nextrow
634
635 movdqa xmm2, XMMWORD [rsi+1*SIZEOF_XMMWORD]
636
637 movdqa xmm3,xmm2
638 punpcklbw xmm2,xmm2
639 punpckhbw xmm3,xmm3
640
641 movdqa XMMWORD [rbx+2*SIZEOF_XMMWORD], xmm2
642 movdqa XMMWORD [rbx+3*SIZEOF_XMMWORD], xmm3
643 movdqa XMMWORD [rdi+2*SIZEOF_XMMWORD], xmm2
644 movdqa XMMWORD [rdi+3*SIZEOF_XMMWORD], xmm3
645
646 sub rax, byte 2*SIZEOF_XMMWORD
647 jz short .nextrow
648
649 add rsi, byte 2*SIZEOF_XMMWORD ; inptr
650 add rbx, byte 4*SIZEOF_XMMWORD ; outptr0
651 add rdi, byte 4*SIZEOF_XMMWORD ; outptr1
652 jmp short .columnloop
653
654 .nextrow:
655 pop rsi
656 pop rdi
657
658 add rsi, byte 1*SIZEOF_JSAMPROW ; input_data
659 add rdi, byte 2*SIZEOF_JSAMPROW ; output_data
660 sub rcx, byte 2 ; rowctr
661 jg near .rowloop
662
663 .return:
664 pop rbx
665 uncollect_args
666 pop rbp
667 ret
668
669 ; For some reason, the OS X linker does not honor the request to align the
670 ; segment unless we do this.
671 align 16