more maintainers, if someone doesnt want to maintain something just say so and ill...
[ffmpeg.git] / libavcodec / i386 / snowdsp_mmx.c
1 /*
2  * MMX and SSE2 optimized snow DSP utils
3  * Copyright (c) 2005-2006 Robert Edele <yartrebo@earthlink.net>
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18  */
19
20 #include "../avcodec.h"
21 #include "../snow.h"
22 #include "mmx.h"
23
24 void ff_snow_horizontal_compose97i_sse2(DWTELEM *b, int width){
25     const int w2= (width+1)>>1;
26     // SSE2 code runs faster with pointers aligned on a 32-byte boundary.
27     DWTELEM temp_buf[(width>>1) + 4];
28     DWTELEM * const temp = temp_buf + 4 - (((int)temp_buf & 0xF) >> 2);
29     const int w_l= (width>>1);
30     const int w_r= w2 - 1;
31     int i;
32
33     { // Lift 0
34         DWTELEM * const ref = b + w2 - 1;
35         DWTELEM b_0 = b[0]; //By allowing the first entry in b[0] to be calculated twice
36         // (the first time erroneously), we allow the SSE2 code to run an extra pass.
37         // The savings in code and time are well worth having to store this value and
38         // calculate b[0] correctly afterwards.
39
40         i = 0;
41         asm volatile(
42             "pcmpeqd   %%xmm7, %%xmm7         \n\t"
43             "pslld        $31, %%xmm7         \n\t"
44             "psrld        $29, %%xmm7         \n\t"
45         ::);
46         for(; i<w_l-7; i+=8){
47             asm volatile(
48                 "movdqu   (%1), %%xmm1        \n\t"
49                 "movdqu 16(%1), %%xmm5        \n\t"
50                 "movdqu  4(%1), %%xmm2        \n\t"
51                 "movdqu 20(%1), %%xmm6        \n\t"
52                 "paddd  %%xmm1, %%xmm2        \n\t"
53                 "paddd  %%xmm5, %%xmm6        \n\t"
54                 "movdqa %%xmm2, %%xmm0        \n\t"
55                 "movdqa %%xmm6, %%xmm4        \n\t"
56                 "paddd  %%xmm2, %%xmm2        \n\t"
57                 "paddd  %%xmm6, %%xmm6        \n\t"
58                 "paddd  %%xmm0, %%xmm2        \n\t"
59                 "paddd  %%xmm4, %%xmm6        \n\t"
60                 "paddd  %%xmm7, %%xmm2        \n\t"
61                 "paddd  %%xmm7, %%xmm6        \n\t"
62                 "psrad      $3, %%xmm2        \n\t"
63                 "psrad      $3, %%xmm6        \n\t"
64                 "movdqa   (%0), %%xmm0        \n\t"
65                 "movdqa 16(%0), %%xmm4        \n\t"
66                 "psubd  %%xmm2, %%xmm0        \n\t"
67                 "psubd  %%xmm6, %%xmm4        \n\t"
68                 "movdqa %%xmm0, (%0)          \n\t"
69                 "movdqa %%xmm4, 16(%0)        \n\t"
70                 :: "r"(&b[i]), "r"(&ref[i])
71                 : "memory"
72             );
73         }
74         snow_horizontal_compose_lift_lead_out(i, b, b, ref, width, w_l, 0, W_DM, W_DO, W_DS);
75         b[0] = b_0 - ((W_DM * 2 * ref[1]+W_DO)>>W_DS);
76     }
77
78     { // Lift 1
79         DWTELEM * const dst = b+w2;
80
81         i = 0;
82         for(; (((long)&dst[i]) & 0xF) && i<w_r; i++){
83             dst[i] = dst[i] - (b[i] + b[i + 1]);
84         }
85         for(; i<w_r-7; i+=8){
86             asm volatile(
87                 "movdqu   (%1), %%xmm1        \n\t"
88                 "movdqu 16(%1), %%xmm5        \n\t"
89                 "movdqu  4(%1), %%xmm2        \n\t"
90                 "movdqu 20(%1), %%xmm6        \n\t"
91                 "paddd  %%xmm1, %%xmm2        \n\t"
92                 "paddd  %%xmm5, %%xmm6        \n\t"
93                 "movdqa   (%0), %%xmm0        \n\t"
94                 "movdqa 16(%0), %%xmm4        \n\t"
95                 "psubd  %%xmm2, %%xmm0        \n\t"
96                 "psubd  %%xmm6, %%xmm4        \n\t"
97                 "movdqa %%xmm0, (%0)          \n\t"
98                 "movdqa %%xmm4, 16(%0)        \n\t"
99                 :: "r"(&dst[i]), "r"(&b[i])
100                 : "memory"
101             );
102         }
103         snow_horizontal_compose_lift_lead_out(i, dst, dst, b, width, w_r, 1, W_CM, W_CO, W_CS);
104     }
105
106     { // Lift 2
107         DWTELEM * const ref = b+w2 - 1;
108         DWTELEM b_0 = b[0];
109
110         i = 0;
111         asm volatile(
112             "pslld          $1, %%xmm7       \n\t" /* xmm7 already holds a '4' from 2 lifts ago. */
113         ::);
114         for(; i<w_l-7; i+=8){
115             asm volatile(
116                 "movdqu   (%1), %%xmm1        \n\t"
117                 "movdqu 16(%1), %%xmm5        \n\t"
118                 "movdqu  4(%1), %%xmm0        \n\t"
119                 "movdqu 20(%1), %%xmm4        \n\t"
120                 "paddd  %%xmm1, %%xmm0        \n\t"
121                 "paddd  %%xmm5, %%xmm4        \n\t"
122                 "movdqa %%xmm7, %%xmm1        \n\t"
123                 "movdqa %%xmm7, %%xmm5        \n\t"
124                 "psubd  %%xmm0, %%xmm1        \n\t"
125                 "psubd  %%xmm4, %%xmm5        \n\t"
126                 "movdqa   (%0), %%xmm0        \n\t"
127                 "movdqa 16(%0), %%xmm4        \n\t"
128                 "pslld      $2, %%xmm0        \n\t"
129                 "pslld      $2, %%xmm4        \n\t"
130                 "psubd  %%xmm0, %%xmm1        \n\t"
131                 "psubd  %%xmm4, %%xmm5        \n\t"
132                 "psrad      $4, %%xmm1        \n\t"
133                 "psrad      $4, %%xmm5        \n\t"
134                 "movdqa   (%0), %%xmm0        \n\t"
135                 "movdqa 16(%0), %%xmm4        \n\t"
136                 "psubd  %%xmm1, %%xmm0        \n\t"
137                 "psubd  %%xmm5, %%xmm4        \n\t"
138                 "movdqa %%xmm0, (%0)          \n\t"
139                 "movdqa %%xmm4, 16(%0)        \n\t"
140                 :: "r"(&b[i]), "r"(&ref[i])
141                 : "memory"
142             );
143         }
144         snow_horizontal_compose_liftS_lead_out(i, b, b, ref, width, w_l);
145         b[0] = b_0 - (((-2 * ref[1] + W_BO) - 4 * b_0) >> W_BS);
146     }
147
148     { // Lift 3
149         DWTELEM * const src = b+w2;
150
151         i = 0;
152         for(; (((long)&temp[i]) & 0xF) && i<w_r; i++){
153             temp[i] = src[i] - ((-W_AM*(b[i] + b[i+1]))>>W_AS);
154         }
155         for(; i<w_r-7; i+=8){
156             asm volatile(
157                 "movdqu  4(%1), %%xmm2        \n\t"
158                 "movdqu 20(%1), %%xmm6        \n\t"
159                 "paddd    (%1), %%xmm2        \n\t"
160                 "paddd  16(%1), %%xmm6        \n\t"
161                 "movdqa %%xmm2, %%xmm0        \n\t"
162                 "movdqa %%xmm6, %%xmm4        \n\t"
163                 "pslld      $2, %%xmm2        \n\t"
164                 "pslld      $2, %%xmm6        \n\t"
165                 "psubd  %%xmm2, %%xmm0        \n\t"
166                 "psubd  %%xmm6, %%xmm4        \n\t"
167                 "psrad      $1, %%xmm0        \n\t"
168                 "psrad      $1, %%xmm4        \n\t"
169                 "movdqu   (%0), %%xmm2        \n\t"
170                 "movdqu 16(%0), %%xmm6        \n\t"
171                 "psubd  %%xmm0, %%xmm2        \n\t"
172                 "psubd  %%xmm4, %%xmm6        \n\t"
173                 "movdqa %%xmm2, (%2)          \n\t"
174                 "movdqa %%xmm6, 16(%2)        \n\t"
175                 :: "r"(&src[i]), "r"(&b[i]), "r"(&temp[i])
176                  : "memory"
177                );
178         }
179         snow_horizontal_compose_lift_lead_out(i, temp, src, b, width, w_r, 1, -W_AM, W_AO, W_AS);
180     }
181
182     {
183         snow_interleave_line_header(&i, width, b, temp);
184
185         for (; (i & 0x1E) != 0x1E; i-=2){
186             b[i+1] = temp[i>>1];
187             b[i] = b[i>>1];
188         }
189         for (i-=30; i>=0; i-=32){
190             asm volatile(
191                 "movdqa      (%1), %%xmm0       \n\t"
192                 "movdqa    16(%1), %%xmm2       \n\t"
193                 "movdqa    32(%1), %%xmm4       \n\t"
194                 "movdqa    48(%1), %%xmm6       \n\t"
195                 "movdqa      (%1), %%xmm1       \n\t"
196                 "movdqa    16(%1), %%xmm3       \n\t"
197                 "movdqa    32(%1), %%xmm5       \n\t"
198                 "movdqa    48(%1), %%xmm7       \n\t"
199                 "punpckldq   (%2), %%xmm0       \n\t"
200                 "punpckldq 16(%2), %%xmm2       \n\t"
201                 "punpckldq 32(%2), %%xmm4       \n\t"
202                 "punpckldq 48(%2), %%xmm6       \n\t"
203                 "movdqa    %%xmm0, (%0)         \n\t"
204                 "movdqa    %%xmm2, 32(%0)       \n\t"
205                 "movdqa    %%xmm4, 64(%0)       \n\t"
206                 "movdqa    %%xmm6, 96(%0)       \n\t"
207                 "punpckhdq   (%2), %%xmm1       \n\t"
208                 "punpckhdq 16(%2), %%xmm3       \n\t"
209                 "punpckhdq 32(%2), %%xmm5       \n\t"
210                 "punpckhdq 48(%2), %%xmm7       \n\t"
211                 "movdqa    %%xmm1, 16(%0)       \n\t"
212                 "movdqa    %%xmm3, 48(%0)       \n\t"
213                 "movdqa    %%xmm5, 80(%0)       \n\t"
214                 "movdqa    %%xmm7, 112(%0)      \n\t"
215                 :: "r"(&(b)[i]), "r"(&(b)[i>>1]), "r"(&(temp)[i>>1])
216                  : "memory"
217                );
218         }
219     }
220 }
221
222 void ff_snow_horizontal_compose97i_mmx(DWTELEM *b, int width){
223     const int w2= (width+1)>>1;
224     DWTELEM temp[width >> 1];
225     const int w_l= (width>>1);
226     const int w_r= w2 - 1;
227     int i;
228
229     { // Lift 0
230         DWTELEM * const ref = b + w2 - 1;
231
232         i = 1;
233         b[0] = b[0] - ((W_DM * 2 * ref[1]+W_DO)>>W_DS);
234         asm volatile(
235             "pcmpeqd    %%mm7, %%mm7         \n\t"
236             "pslld        $31, %%mm7         \n\t"
237             "psrld        $29, %%mm7         \n\t"
238            ::);
239         for(; i<w_l-3; i+=4){
240             asm volatile(
241                 "movq     (%1), %%mm2        \n\t"
242                 "movq    8(%1), %%mm6        \n\t"
243                 "paddd   4(%1), %%mm2        \n\t"
244                 "paddd  12(%1), %%mm6        \n\t"
245                 "movq    %%mm2, %%mm0        \n\t"
246                 "movq    %%mm6, %%mm4        \n\t"
247                 "paddd   %%mm2, %%mm2        \n\t"
248                 "paddd   %%mm6, %%mm6        \n\t"
249                 "paddd   %%mm0, %%mm2        \n\t"
250                 "paddd   %%mm4, %%mm6        \n\t"
251                 "paddd   %%mm7, %%mm2        \n\t"
252                 "paddd   %%mm7, %%mm6        \n\t"
253                 "psrad      $3, %%mm2        \n\t"
254                 "psrad      $3, %%mm6        \n\t"
255                 "movq     (%0), %%mm0        \n\t"
256                 "movq    8(%0), %%mm4        \n\t"
257                 "psubd   %%mm2, %%mm0        \n\t"
258                 "psubd   %%mm6, %%mm4        \n\t"
259                 "movq    %%mm0, (%0)         \n\t"
260                 "movq    %%mm4, 8(%0)        \n\t"
261                 :: "r"(&b[i]), "r"(&ref[i])
262                  : "memory"
263                );
264         }
265         snow_horizontal_compose_lift_lead_out(i, b, b, ref, width, w_l, 0, W_DM, W_DO, W_DS);
266     }
267
268     { // Lift 1
269         DWTELEM * const dst = b+w2;
270
271         i = 0;
272         for(; i<w_r-3; i+=4){
273             asm volatile(
274                 "movq     (%1), %%mm2        \n\t"
275                 "movq    8(%1), %%mm6        \n\t"
276                 "paddd   4(%1), %%mm2        \n\t"
277                 "paddd  12(%1), %%mm6        \n\t"
278                 "movq     (%0), %%mm0        \n\t"
279                 "movq    8(%0), %%mm4        \n\t"
280                 "psubd   %%mm2, %%mm0        \n\t"
281                 "psubd   %%mm6, %%mm4        \n\t"
282                 "movq    %%mm0, (%0)         \n\t"
283                 "movq    %%mm4, 8(%0)        \n\t"
284                 :: "r"(&dst[i]), "r"(&b[i])
285                  : "memory"
286                );
287         }
288         snow_horizontal_compose_lift_lead_out(i, dst, dst, b, width, w_r, 1, W_CM, W_CO, W_CS);
289     }
290
291     { // Lift 2
292         DWTELEM * const ref = b+w2 - 1;
293
294         i = 1;
295         b[0] = b[0] - (((-2 * ref[1] + W_BO) - 4 * b[0]) >> W_BS);
296         asm volatile(
297             "pslld          $1, %%mm7       \n\t" /* xmm7 already holds a '4' from 2 lifts ago. */
298            ::);
299         for(; i<w_l-3; i+=4){
300             asm volatile(
301                 "movq     (%1), %%mm0        \n\t"
302                 "movq    8(%1), %%mm4        \n\t"
303                 "paddd   4(%1), %%mm0        \n\t"
304                 "paddd  12(%1), %%mm4        \n\t"
305                 "movq    %%mm7, %%mm1        \n\t"
306                 "movq    %%mm7, %%mm5        \n\t"
307                 "psubd   %%mm0, %%mm1        \n\t"
308                 "psubd   %%mm4, %%mm5        \n\t"
309                 "movq     (%0), %%mm0        \n\t"
310                 "movq    8(%0), %%mm4        \n\t"
311                 "pslld      $2, %%mm0        \n\t"
312                 "pslld      $2, %%mm4        \n\t"
313                 "psubd   %%mm0, %%mm1        \n\t"
314                 "psubd   %%mm4, %%mm5        \n\t"
315                 "psrad      $4, %%mm1        \n\t"
316                 "psrad      $4, %%mm5        \n\t"
317                 "movq     (%0), %%mm0        \n\t"
318                 "movq    8(%0), %%mm4        \n\t"
319                 "psubd   %%mm1, %%mm0        \n\t"
320                 "psubd   %%mm5, %%mm4        \n\t"
321                 "movq    %%mm0, (%0)         \n\t"
322                 "movq    %%mm4, 8(%0)        \n\t"
323                 :: "r"(&b[i]), "r"(&ref[i])
324                  : "memory"
325                );
326         }
327         snow_horizontal_compose_liftS_lead_out(i, b, b, ref, width, w_l);
328     }
329
330     { // Lift 3
331         DWTELEM * const src = b+w2;
332         i = 0;
333
334         for(; i<w_r-3; i+=4){
335             asm volatile(
336                 "movq    4(%1), %%mm2        \n\t"
337                 "movq   12(%1), %%mm6        \n\t"
338                 "paddd    (%1), %%mm2        \n\t"
339                 "paddd   8(%1), %%mm6        \n\t"
340                 "movq    %%mm2, %%mm0        \n\t"
341                 "movq    %%mm6, %%mm4        \n\t"
342                 "pslld      $2, %%mm2        \n\t"
343                 "pslld      $2, %%mm6        \n\t"
344                 "psubd   %%mm2, %%mm0        \n\t"
345                 "psubd   %%mm6, %%mm4        \n\t"
346                 "psrad      $1, %%mm0        \n\t"
347                 "psrad      $1, %%mm4        \n\t"
348                 "movq     (%0), %%mm2        \n\t"
349                 "movq    8(%0), %%mm6        \n\t"
350                 "psubd   %%mm0, %%mm2        \n\t"
351                 "psubd   %%mm4, %%mm6        \n\t"
352                 "movq    %%mm2, (%2)         \n\t"
353                 "movq    %%mm6, 8(%2)        \n\t"
354                 :: "r"(&src[i]), "r"(&b[i]), "r"(&temp[i])
355                  : "memory"
356                );
357         }
358         snow_horizontal_compose_lift_lead_out(i, temp, src, b, width, w_r, 1, -W_AM, W_AO, W_AS);
359     }
360
361     {
362         snow_interleave_line_header(&i, width, b, temp);
363
364         for (; (i & 0xE) != 0xE; i-=2){
365             b[i+1] = temp[i>>1];
366             b[i] = b[i>>1];
367         }
368         for (i-=14; i>=0; i-=16){
369             asm volatile(
370                 "movq        (%1), %%mm0       \n\t"
371                 "movq       8(%1), %%mm2       \n\t"
372                 "movq      16(%1), %%mm4       \n\t"
373                 "movq      24(%1), %%mm6       \n\t"
374                 "movq        (%1), %%mm1       \n\t"
375                 "movq       8(%1), %%mm3       \n\t"
376                 "movq      16(%1), %%mm5       \n\t"
377                 "movq      24(%1), %%mm7       \n\t"
378                 "punpckldq   (%2), %%mm0       \n\t"
379                 "punpckldq  8(%2), %%mm2       \n\t"
380                 "punpckldq 16(%2), %%mm4       \n\t"
381                 "punpckldq 24(%2), %%mm6       \n\t"
382                 "movq       %%mm0, (%0)        \n\t"
383                 "movq       %%mm2, 16(%0)      \n\t"
384                 "movq       %%mm4, 32(%0)      \n\t"
385                 "movq       %%mm6, 48(%0)      \n\t"
386                 "punpckhdq   (%2), %%mm1       \n\t"
387                 "punpckhdq  8(%2), %%mm3       \n\t"
388                 "punpckhdq 16(%2), %%mm5       \n\t"
389                 "punpckhdq 24(%2), %%mm7       \n\t"
390                 "movq       %%mm1, 8(%0)       \n\t"
391                 "movq       %%mm3, 24(%0)      \n\t"
392                 "movq       %%mm5, 40(%0)      \n\t"
393                 "movq       %%mm7, 56(%0)      \n\t"
394                 :: "r"(&b[i]), "r"(&b[i>>1]), "r"(&temp[i>>1])
395                  : "memory"
396                );
397         }
398     }
399 }
400
401 #define snow_vertical_compose_sse2_load_add(op,r,t0,t1,t2,t3)\
402         ""op" (%%"r",%%"REG_d",4), %%"t0"      \n\t"\
403         ""op" 16(%%"r",%%"REG_d",4), %%"t1"    \n\t"\
404         ""op" 32(%%"r",%%"REG_d",4), %%"t2"    \n\t"\
405         ""op" 48(%%"r",%%"REG_d",4), %%"t3"    \n\t"
406
407 #define snow_vertical_compose_sse2_load(r,t0,t1,t2,t3)\
408         snow_vertical_compose_sse2_load_add("movdqa",r,t0,t1,t2,t3)
409
410 #define snow_vertical_compose_sse2_add(r,t0,t1,t2,t3)\
411         snow_vertical_compose_sse2_load_add("paddd",r,t0,t1,t2,t3)
412
413 #define snow_vertical_compose_sse2_sub(s0,s1,s2,s3,t0,t1,t2,t3)\
414         "psubd %%"s0", %%"t0" \n\t"\
415         "psubd %%"s1", %%"t1" \n\t"\
416         "psubd %%"s2", %%"t2" \n\t"\
417         "psubd %%"s3", %%"t3" \n\t"
418
419 #define snow_vertical_compose_sse2_store(w,s0,s1,s2,s3)\
420         "movdqa %%"s0", (%%"w",%%"REG_d",4)      \n\t"\
421         "movdqa %%"s1", 16(%%"w",%%"REG_d",4)    \n\t"\
422         "movdqa %%"s2", 32(%%"w",%%"REG_d",4)    \n\t"\
423         "movdqa %%"s3", 48(%%"w",%%"REG_d",4)    \n\t"
424
425 #define snow_vertical_compose_sse2_sra(n,t0,t1,t2,t3)\
426         "psrad $"n", %%"t0" \n\t"\
427         "psrad $"n", %%"t1" \n\t"\
428         "psrad $"n", %%"t2" \n\t"\
429         "psrad $"n", %%"t3" \n\t"
430
431 #define snow_vertical_compose_sse2_r2r_add(s0,s1,s2,s3,t0,t1,t2,t3)\
432         "paddd %%"s0", %%"t0" \n\t"\
433         "paddd %%"s1", %%"t1" \n\t"\
434         "paddd %%"s2", %%"t2" \n\t"\
435         "paddd %%"s3", %%"t3" \n\t"
436
437 #define snow_vertical_compose_sse2_sll(n,t0,t1,t2,t3)\
438         "pslld $"n", %%"t0" \n\t"\
439         "pslld $"n", %%"t1" \n\t"\
440         "pslld $"n", %%"t2" \n\t"\
441         "pslld $"n", %%"t3" \n\t"
442
443 #define snow_vertical_compose_sse2_move(s0,s1,s2,s3,t0,t1,t2,t3)\
444         "movdqa %%"s0", %%"t0" \n\t"\
445         "movdqa %%"s1", %%"t1" \n\t"\
446         "movdqa %%"s2", %%"t2" \n\t"\
447         "movdqa %%"s3", %%"t3" \n\t"
448
449 void ff_snow_vertical_compose97i_sse2(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, DWTELEM *b3, DWTELEM *b4, DWTELEM *b5, int width){
450     long i = width;
451
452     while(i & 0xF)
453     {
454         i--;
455         b4[i] -= (W_DM*(b3[i] + b5[i])+W_DO)>>W_DS;
456         b3[i] -= (W_CM*(b2[i] + b4[i])+W_CO)>>W_CS;
457         b2[i] += (W_BM*(b1[i] + b3[i])+4*b2[i]+W_BO)>>W_BS;
458         b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
459     }
460
461          asm volatile (
462         "jmp 2f                                      \n\t"
463         "1:                                          \n\t"
464
465         "mov %6, %%"REG_a"                           \n\t"
466         "mov %4, %%"REG_b"                           \n\t"
467
468         snow_vertical_compose_sse2_load(REG_b,"xmm0","xmm2","xmm4","xmm6")
469         snow_vertical_compose_sse2_add(REG_a,"xmm0","xmm2","xmm4","xmm6")
470         snow_vertical_compose_sse2_move("xmm0","xmm2","xmm4","xmm6","xmm1","xmm3","xmm5","xmm7")
471         snow_vertical_compose_sse2_sll("1","xmm0","xmm2","xmm4","xmm6")\
472         snow_vertical_compose_sse2_r2r_add("xmm1","xmm3","xmm5","xmm7","xmm0","xmm2","xmm4","xmm6")
473
474         "pcmpeqd %%xmm1, %%xmm1                      \n\t"
475         "pslld $31, %%xmm1                           \n\t"
476         "psrld $29, %%xmm1                           \n\t"
477         "mov %5, %%"REG_a"                           \n\t"
478
479         snow_vertical_compose_sse2_r2r_add("xmm1","xmm1","xmm1","xmm1","xmm0","xmm2","xmm4","xmm6")
480         snow_vertical_compose_sse2_sra("3","xmm0","xmm2","xmm4","xmm6")
481         snow_vertical_compose_sse2_load(REG_a,"xmm1","xmm3","xmm5","xmm7")
482         snow_vertical_compose_sse2_sub("xmm0","xmm2","xmm4","xmm6","xmm1","xmm3","xmm5","xmm7")
483         snow_vertical_compose_sse2_store(REG_a,"xmm1","xmm3","xmm5","xmm7")
484         "mov %3, %%"REG_c"                           \n\t"
485         snow_vertical_compose_sse2_load(REG_b,"xmm0","xmm2","xmm4","xmm6")
486         snow_vertical_compose_sse2_add(REG_c,"xmm1","xmm3","xmm5","xmm7")
487         snow_vertical_compose_sse2_sub("xmm1","xmm3","xmm5","xmm7","xmm0","xmm2","xmm4","xmm6")
488         snow_vertical_compose_sse2_store(REG_b,"xmm0","xmm2","xmm4","xmm6")
489         "mov %2, %%"REG_a"                           \n\t"
490         snow_vertical_compose_sse2_load(REG_c,"xmm1","xmm3","xmm5","xmm7")
491         snow_vertical_compose_sse2_add(REG_a,"xmm0","xmm2","xmm4","xmm6")
492         snow_vertical_compose_sse2_sll("2","xmm1","xmm3","xmm5","xmm7")\
493         snow_vertical_compose_sse2_r2r_add("xmm1","xmm3","xmm5","xmm7","xmm0","xmm2","xmm4","xmm6")
494
495         "pcmpeqd %%xmm1, %%xmm1                      \n\t"
496         "pslld $31, %%xmm1                           \n\t"
497         "psrld $28, %%xmm1                           \n\t"
498         "mov %1, %%"REG_b"                           \n\t"
499
500         snow_vertical_compose_sse2_r2r_add("xmm1","xmm1","xmm1","xmm1","xmm0","xmm2","xmm4","xmm6")
501         snow_vertical_compose_sse2_sra("4","xmm0","xmm2","xmm4","xmm6")
502         snow_vertical_compose_sse2_add(REG_c,"xmm0","xmm2","xmm4","xmm6")
503         snow_vertical_compose_sse2_store(REG_c,"xmm0","xmm2","xmm4","xmm6")
504         snow_vertical_compose_sse2_add(REG_b,"xmm0","xmm2","xmm4","xmm6")
505         snow_vertical_compose_sse2_move("xmm0","xmm2","xmm4","xmm6","xmm1","xmm3","xmm5","xmm7")
506         snow_vertical_compose_sse2_sll("1","xmm0","xmm2","xmm4","xmm6")\
507         snow_vertical_compose_sse2_r2r_add("xmm1","xmm3","xmm5","xmm7","xmm0","xmm2","xmm4","xmm6")
508         snow_vertical_compose_sse2_sra("1","xmm0","xmm2","xmm4","xmm6")
509         snow_vertical_compose_sse2_add(REG_a,"xmm0","xmm2","xmm4","xmm6")
510         snow_vertical_compose_sse2_store(REG_a,"xmm0","xmm2","xmm4","xmm6")
511
512         "2:                                          \n\t"
513         "sub $16, %%"REG_d"                          \n\t"
514         "jge 1b                                      \n\t"
515         :"+d"(i)
516         :
517         "m"(b0),"m"(b1),"m"(b2),"m"(b3),"m"(b4),"m"(b5):
518         "%"REG_a"","%"REG_b"","%"REG_c"");
519 }
520
521 #define snow_vertical_compose_mmx_load_add(op,r,t0,t1,t2,t3)\
522         ""op" (%%"r",%%"REG_d",4), %%"t0"   \n\t"\
523         ""op" 8(%%"r",%%"REG_d",4), %%"t1"  \n\t"\
524         ""op" 16(%%"r",%%"REG_d",4), %%"t2" \n\t"\
525         ""op" 24(%%"r",%%"REG_d",4), %%"t3" \n\t"
526
527 #define snow_vertical_compose_mmx_load(r,t0,t1,t2,t3)\
528         snow_vertical_compose_mmx_load_add("movq",r,t0,t1,t2,t3)
529
530 #define snow_vertical_compose_mmx_add(r,t0,t1,t2,t3)\
531         snow_vertical_compose_mmx_load_add("paddd",r,t0,t1,t2,t3)
532
533 #define snow_vertical_compose_mmx_sub(s0,s1,s2,s3,t0,t1,t2,t3)\
534         snow_vertical_compose_sse2_sub(s0,s1,s2,s3,t0,t1,t2,t3)
535
536 #define snow_vertical_compose_mmx_store(w,s0,s1,s2,s3)\
537         "movq %%"s0", (%%"w",%%"REG_d",4)   \n\t"\
538         "movq %%"s1", 8(%%"w",%%"REG_d",4)  \n\t"\
539         "movq %%"s2", 16(%%"w",%%"REG_d",4) \n\t"\
540         "movq %%"s3", 24(%%"w",%%"REG_d",4) \n\t"
541
542 #define snow_vertical_compose_mmx_sra(n,t0,t1,t2,t3)\
543         snow_vertical_compose_sse2_sra(n,t0,t1,t2,t3)
544
545 #define snow_vertical_compose_mmx_r2r_add(s0,s1,s2,s3,t0,t1,t2,t3)\
546         snow_vertical_compose_sse2_r2r_add(s0,s1,s2,s3,t0,t1,t2,t3)
547
548 #define snow_vertical_compose_mmx_sll(n,t0,t1,t2,t3)\
549         snow_vertical_compose_sse2_sll(n,t0,t1,t2,t3)
550
551 #define snow_vertical_compose_mmx_move(s0,s1,s2,s3,t0,t1,t2,t3)\
552         "movq %%"s0", %%"t0" \n\t"\
553         "movq %%"s1", %%"t1" \n\t"\
554         "movq %%"s2", %%"t2" \n\t"\
555         "movq %%"s3", %%"t3" \n\t"
556
557 void ff_snow_vertical_compose97i_mmx(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, DWTELEM *b3, DWTELEM *b4, DWTELEM *b5, int width){
558     long i = width;
559     while(i & 0x7)
560     {
561         i--;
562         b4[i] -= (W_DM*(b3[i] + b5[i])+W_DO)>>W_DS;
563         b3[i] -= (W_CM*(b2[i] + b4[i])+W_CO)>>W_CS;
564         b2[i] += (W_BM*(b1[i] + b3[i])+4*b2[i]+W_BO)>>W_BS;
565         b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
566     }
567
568     asm volatile(
569         "jmp 2f                                      \n\t"
570         "1:                                          \n\t"
571
572         "mov %6, %%"REG_a"                           \n\t"
573         "mov %4, %%"REG_b"                           \n\t"
574
575         snow_vertical_compose_mmx_load(REG_b,"mm0","mm2","mm4","mm6")
576         snow_vertical_compose_mmx_add(REG_a,"mm0","mm2","mm4","mm6")
577         snow_vertical_compose_mmx_move("mm0","mm2","mm4","mm6","mm1","mm3","mm5","mm7")
578         snow_vertical_compose_mmx_sll("1","mm0","mm2","mm4","mm6")
579         snow_vertical_compose_mmx_r2r_add("mm1","mm3","mm5","mm7","mm0","mm2","mm4","mm6")
580
581         "pcmpeqd %%mm1, %%mm1                        \n\t"
582         "pslld $31, %%mm1                            \n\t"
583         "psrld $29, %%mm1                            \n\t"
584         "mov %5, %%"REG_a"                           \n\t"
585
586         snow_vertical_compose_mmx_r2r_add("mm1","mm1","mm1","mm1","mm0","mm2","mm4","mm6")
587         snow_vertical_compose_mmx_sra("3","mm0","mm2","mm4","mm6")
588         snow_vertical_compose_mmx_load(REG_a,"mm1","mm3","mm5","mm7")
589         snow_vertical_compose_mmx_sub("mm0","mm2","mm4","mm6","mm1","mm3","mm5","mm7")
590         snow_vertical_compose_mmx_store(REG_a,"mm1","mm3","mm5","mm7")
591         "mov %3, %%"REG_c"                           \n\t"
592         snow_vertical_compose_mmx_load(REG_b,"mm0","mm2","mm4","mm6")
593         snow_vertical_compose_mmx_add(REG_c,"mm1","mm3","mm5","mm7")
594         snow_vertical_compose_mmx_sub("mm1","mm3","mm5","mm7","mm0","mm2","mm4","mm6")
595         snow_vertical_compose_mmx_store(REG_b,"mm0","mm2","mm4","mm6")
596         "mov %2, %%"REG_a"                           \n\t"
597         snow_vertical_compose_mmx_load(REG_c,"mm1","mm3","mm5","mm7")
598         snow_vertical_compose_mmx_add(REG_a,"mm0","mm2","mm4","mm6")
599         snow_vertical_compose_mmx_sll("2","mm1","mm3","mm5","mm7")
600         snow_vertical_compose_mmx_r2r_add("mm1","mm3","mm5","mm7","mm0","mm2","mm4","mm6")
601
602         "pcmpeqd %%mm1, %%mm1                        \n\t"
603         "pslld $31, %%mm1                            \n\t"
604         "psrld $28, %%mm1                            \n\t"
605         "mov %1, %%"REG_b"                           \n\t"
606
607         snow_vertical_compose_mmx_r2r_add("mm1","mm1","mm1","mm1","mm0","mm2","mm4","mm6")
608         snow_vertical_compose_mmx_sra("4","mm0","mm2","mm4","mm6")
609         snow_vertical_compose_mmx_add(REG_c,"mm0","mm2","mm4","mm6")
610         snow_vertical_compose_mmx_store(REG_c,"mm0","mm2","mm4","mm6")
611         snow_vertical_compose_mmx_add(REG_b,"mm0","mm2","mm4","mm6")
612         snow_vertical_compose_mmx_move("mm0","mm2","mm4","mm6","mm1","mm3","mm5","mm7")
613         snow_vertical_compose_mmx_sll("1","mm0","mm2","mm4","mm6")
614         snow_vertical_compose_mmx_r2r_add("mm1","mm3","mm5","mm7","mm0","mm2","mm4","mm6")
615         snow_vertical_compose_mmx_sra("1","mm0","mm2","mm4","mm6")
616         snow_vertical_compose_mmx_add(REG_a,"mm0","mm2","mm4","mm6")
617         snow_vertical_compose_mmx_store(REG_a,"mm0","mm2","mm4","mm6")
618
619         "2:                                          \n\t"
620         "sub $8, %%"REG_d"                           \n\t"
621         "jge 1b                                      \n\t"
622         :"+d"(i)
623         :
624         "m"(b0),"m"(b1),"m"(b2),"m"(b3),"m"(b4),"m"(b5):
625         "%"REG_a"","%"REG_b"","%"REG_c"");
626 }
627
628 #define snow_inner_add_yblock_sse2_header \
629     DWTELEM * * dst_array = sb->line + src_y;\
630     asm volatile(\
631              "mov  %6, %%"REG_c"             \n\t"\
632              "mov  %5, %%"REG_b"             \n\t"\
633              "mov  %3, %%"REG_S"             \n\t"\
634              "pxor %%xmm7, %%xmm7            \n\t" /* 0 */\
635              "pcmpeqd %%xmm3, %%xmm3         \n\t"\
636              "pslld $31, %%xmm3              \n\t"\
637              "psrld $24, %%xmm3              \n\t" /* FRAC_BITS >> 1 */\
638              "1:                             \n\t"\
639              "mov %1, %%"REG_D"              \n\t"\
640              "mov (%%"REG_D"), %%"REG_D"     \n\t"\
641              "add %2, %%"REG_D"              \n\t"
642
643 #define snow_inner_add_yblock_sse2_start_8(out_reg1, out_reg2, ptr_offset, s_offset)\
644              "mov "PTR_SIZE"*"ptr_offset"(%%"REG_a"), %%"REG_d"; \n\t"\
645              "movq (%%"REG_d"), %%"out_reg1" \n\t"\
646              "movq (%%"REG_d", %%"REG_c"), %%"out_reg2" \n\t"\
647              "punpcklbw %%xmm7, %%"out_reg1" \n\t"\
648              "punpcklbw %%xmm7, %%"out_reg2" \n\t"\
649              "movq "s_offset"(%%"REG_S"), %%xmm0 \n\t"\
650              "movq "s_offset"+16(%%"REG_S"), %%xmm4 \n\t"\
651              "punpcklbw %%xmm7, %%xmm0       \n\t"\
652              "punpcklbw %%xmm7, %%xmm4       \n\t"\
653              "pmullw %%xmm0, %%"out_reg1"    \n\t"\
654              "pmullw %%xmm4, %%"out_reg2"    \n\t"
655
656 #define snow_inner_add_yblock_sse2_start_16(out_reg1, out_reg2, ptr_offset, s_offset)\
657              "mov "PTR_SIZE"*"ptr_offset"(%%"REG_a"), %%"REG_d"; \n\t"\
658              "movq (%%"REG_d"), %%"out_reg1" \n\t"\
659              "movq 8(%%"REG_d"), %%"out_reg2" \n\t"\
660              "punpcklbw %%xmm7, %%"out_reg1" \n\t"\
661              "punpcklbw %%xmm7, %%"out_reg2" \n\t"\
662              "movq "s_offset"(%%"REG_S"), %%xmm0 \n\t"\
663              "movq "s_offset"+8(%%"REG_S"), %%xmm4 \n\t"\
664              "punpcklbw %%xmm7, %%xmm0       \n\t"\
665              "punpcklbw %%xmm7, %%xmm4       \n\t"\
666              "pmullw %%xmm0, %%"out_reg1"    \n\t"\
667              "pmullw %%xmm4, %%"out_reg2"    \n\t"
668
669 #define snow_inner_add_yblock_sse2_accum_8(ptr_offset, s_offset) \
670              snow_inner_add_yblock_sse2_start_8("xmm2", "xmm6", ptr_offset, s_offset)\
671              "paddusw %%xmm2, %%xmm1         \n\t"\
672              "paddusw %%xmm6, %%xmm5         \n\t"
673
674 #define snow_inner_add_yblock_sse2_accum_16(ptr_offset, s_offset) \
675              snow_inner_add_yblock_sse2_start_16("xmm2", "xmm6", ptr_offset, s_offset)\
676              "paddusw %%xmm2, %%xmm1         \n\t"\
677              "paddusw %%xmm6, %%xmm5         \n\t"
678
679 #define snow_inner_add_yblock_sse2_end_common1\
680              "add $32, %%"REG_S"             \n\t"\
681              "add %%"REG_c", %0              \n\t"\
682              "add %%"REG_c", "PTR_SIZE"*3(%%"REG_a");\n\t"\
683              "add %%"REG_c", "PTR_SIZE"*2(%%"REG_a");\n\t"\
684              "add %%"REG_c", "PTR_SIZE"*1(%%"REG_a");\n\t"\
685              "add %%"REG_c", (%%"REG_a")     \n\t"
686
687 #define snow_inner_add_yblock_sse2_end_common2\
688              "jnz 1b                         \n\t"\
689              :"+m"(dst8),"+m"(dst_array)\
690              :\
691              "rm"((long)(src_x<<2)),"m"(obmc),"a"(block),"m"((long)b_h),"m"((long)src_stride):\
692              "%"REG_b"","%"REG_c"","%"REG_S"","%"REG_D"","%"REG_d"");
693
694 #define snow_inner_add_yblock_sse2_end_8\
695              "sal $1, %%"REG_c"              \n\t"\
696              "add $"PTR_SIZE"*2, %1          \n\t"\
697              snow_inner_add_yblock_sse2_end_common1\
698              "sar $1, %%"REG_c"              \n\t"\
699              "sub $2, %%"REG_b"              \n\t"\
700              snow_inner_add_yblock_sse2_end_common2
701
702 #define snow_inner_add_yblock_sse2_end_16\
703              "add $"PTR_SIZE"*1, %1          \n\t"\
704              snow_inner_add_yblock_sse2_end_common1\
705              "dec %%"REG_b"                  \n\t"\
706              snow_inner_add_yblock_sse2_end_common2
707
708 static void inner_add_yblock_bw_8_obmc_16_bh_even_sse2(uint8_t *obmc, const long obmc_stride, uint8_t * * block, int b_w, long b_h,
709                       int src_x, int src_y, long src_stride, slice_buffer * sb, int add, uint8_t * dst8){
710 snow_inner_add_yblock_sse2_header
711 snow_inner_add_yblock_sse2_start_8("xmm1", "xmm5", "3", "0")
712 snow_inner_add_yblock_sse2_accum_8("2", "8")
713 snow_inner_add_yblock_sse2_accum_8("1", "128")
714 snow_inner_add_yblock_sse2_accum_8("0", "136")
715
716              "mov %0, %%"REG_d"              \n\t"
717              "movdqa (%%"REG_D"), %%xmm0     \n\t"
718              "movdqa %%xmm1, %%xmm2          \n\t"
719
720              "punpckhwd %%xmm7, %%xmm1       \n\t"
721              "punpcklwd %%xmm7, %%xmm2       \n\t"
722              "paddd %%xmm2, %%xmm0           \n\t"
723              "movdqa 16(%%"REG_D"), %%xmm2   \n\t"
724              "paddd %%xmm1, %%xmm2           \n\t"
725              "paddd %%xmm3, %%xmm0           \n\t"
726              "paddd %%xmm3, %%xmm2           \n\t"
727
728              "mov %1, %%"REG_D"              \n\t"
729              "mov "PTR_SIZE"(%%"REG_D"), %%"REG_D";\n\t"
730              "add %2, %%"REG_D"              \n\t"
731
732              "movdqa (%%"REG_D"), %%xmm4     \n\t"
733              "movdqa %%xmm5, %%xmm6          \n\t"
734              "punpckhwd %%xmm7, %%xmm5       \n\t"
735              "punpcklwd %%xmm7, %%xmm6       \n\t"
736              "paddd %%xmm6, %%xmm4           \n\t"
737              "movdqa 16(%%"REG_D"), %%xmm6   \n\t"
738              "paddd %%xmm5, %%xmm6           \n\t"
739              "paddd %%xmm3, %%xmm4           \n\t"
740              "paddd %%xmm3, %%xmm6           \n\t"
741
742              "psrad $8, %%xmm0               \n\t" /* FRAC_BITS. */
743              "psrad $8, %%xmm2               \n\t" /* FRAC_BITS. */
744              "packssdw %%xmm2, %%xmm0        \n\t"
745              "packuswb %%xmm7, %%xmm0        \n\t"
746              "movq %%xmm0, (%%"REG_d")       \n\t"
747
748              "psrad $8, %%xmm4               \n\t" /* FRAC_BITS. */
749              "psrad $8, %%xmm6               \n\t" /* FRAC_BITS. */
750              "packssdw %%xmm6, %%xmm4        \n\t"
751              "packuswb %%xmm7, %%xmm4        \n\t"
752              "movq %%xmm4, (%%"REG_d",%%"REG_c");\n\t"
753 snow_inner_add_yblock_sse2_end_8
754 }
755
756 static void inner_add_yblock_bw_16_obmc_32_sse2(uint8_t *obmc, const long obmc_stride, uint8_t * * block, int b_w, long b_h,
757                       int src_x, int src_y, long src_stride, slice_buffer * sb, int add, uint8_t * dst8){
758 snow_inner_add_yblock_sse2_header
759 snow_inner_add_yblock_sse2_start_16("xmm1", "xmm5", "3", "0")
760 snow_inner_add_yblock_sse2_accum_16("2", "16")
761 snow_inner_add_yblock_sse2_accum_16("1", "512")
762 snow_inner_add_yblock_sse2_accum_16("0", "528")
763
764              "mov %0, %%"REG_d"              \n\t"
765              "movdqa %%xmm1, %%xmm0          \n\t"
766              "movdqa %%xmm5, %%xmm4          \n\t"
767              "punpcklwd %%xmm7, %%xmm0       \n\t"
768              "paddd (%%"REG_D"), %%xmm0      \n\t"
769              "punpckhwd %%xmm7, %%xmm1       \n\t"
770              "paddd 16(%%"REG_D"), %%xmm1    \n\t"
771              "punpcklwd %%xmm7, %%xmm4       \n\t"
772              "paddd 32(%%"REG_D"), %%xmm4    \n\t"
773              "punpckhwd %%xmm7, %%xmm5       \n\t"
774              "paddd 48(%%"REG_D"), %%xmm5    \n\t"
775              "paddd %%xmm3, %%xmm0           \n\t"
776              "paddd %%xmm3, %%xmm1           \n\t"
777              "paddd %%xmm3, %%xmm4           \n\t"
778              "paddd %%xmm3, %%xmm5           \n\t"
779              "psrad $8, %%xmm0               \n\t" /* FRAC_BITS. */
780              "psrad $8, %%xmm1               \n\t" /* FRAC_BITS. */
781              "psrad $8, %%xmm4               \n\t" /* FRAC_BITS. */
782              "psrad $8, %%xmm5               \n\t" /* FRAC_BITS. */
783
784              "packssdw %%xmm1, %%xmm0        \n\t"
785              "packssdw %%xmm5, %%xmm4        \n\t"
786              "packuswb %%xmm4, %%xmm0        \n\t"
787
788              "movdqu %%xmm0, (%%"REG_d")       \n\t"
789
790 snow_inner_add_yblock_sse2_end_16
791 }
792
793 #define snow_inner_add_yblock_mmx_header \
794     DWTELEM * * dst_array = sb->line + src_y;\
795     asm volatile(\
796              "mov  %6, %%"REG_c"             \n\t"\
797              "mov  %5, %%"REG_b"             \n\t"\
798              "mov  %3, %%"REG_S"             \n\t"\
799              "pxor %%mm7, %%mm7              \n\t" /* 0 */\
800              "pcmpeqd %%mm3, %%mm3           \n\t"\
801              "pslld $31, %%mm3               \n\t"\
802              "psrld $24, %%mm3               \n\t" /* FRAC_BITS >> 1 */\
803              "1:                             \n\t"\
804              "mov %1, %%"REG_D"              \n\t"\
805              "mov (%%"REG_D"), %%"REG_D"     \n\t"\
806              "add %2, %%"REG_D"              \n\t"
807
808 #define snow_inner_add_yblock_mmx_start(out_reg1, out_reg2, ptr_offset, s_offset, d_offset)\
809              "mov "PTR_SIZE"*"ptr_offset"(%%"REG_a"), %%"REG_d"; \n\t"\
810              "movd "d_offset"(%%"REG_d"), %%"out_reg1" \n\t"\
811              "movd "d_offset"+4(%%"REG_d"), %%"out_reg2" \n\t"\
812              "punpcklbw %%mm7, %%"out_reg1" \n\t"\
813              "punpcklbw %%mm7, %%"out_reg2" \n\t"\
814              "movd "s_offset"(%%"REG_S"), %%mm0 \n\t"\
815              "movd "s_offset"+4(%%"REG_S"), %%mm4 \n\t"\
816              "punpcklbw %%mm7, %%mm0       \n\t"\
817              "punpcklbw %%mm7, %%mm4       \n\t"\
818              "pmullw %%mm0, %%"out_reg1"    \n\t"\
819              "pmullw %%mm4, %%"out_reg2"    \n\t"
820
821 #define snow_inner_add_yblock_mmx_accum(ptr_offset, s_offset, d_offset) \
822              snow_inner_add_yblock_mmx_start("mm2", "mm6", ptr_offset, s_offset, d_offset)\
823              "paddusw %%mm2, %%mm1         \n\t"\
824              "paddusw %%mm6, %%mm5         \n\t"
825
826 #define snow_inner_add_yblock_mmx_mix(read_offset, write_offset)\
827              "mov %0, %%"REG_d"              \n\t"\
828              "movq %%mm1, %%mm0              \n\t"\
829              "movq %%mm5, %%mm4              \n\t"\
830              "punpcklwd %%mm7, %%mm0         \n\t"\
831              "paddd "read_offset"(%%"REG_D"), %%mm0 \n\t"\
832              "punpckhwd %%mm7, %%mm1         \n\t"\
833              "paddd "read_offset"+8(%%"REG_D"), %%mm1 \n\t"\
834              "punpcklwd %%mm7, %%mm4         \n\t"\
835              "paddd "read_offset"+16(%%"REG_D"), %%mm4 \n\t"\
836              "punpckhwd %%mm7, %%mm5         \n\t"\
837              "paddd "read_offset"+24(%%"REG_D"), %%mm5 \n\t"\
838              "paddd %%mm3, %%mm0             \n\t"\
839              "paddd %%mm3, %%mm1             \n\t"\
840              "paddd %%mm3, %%mm4             \n\t"\
841              "paddd %%mm3, %%mm5             \n\t"\
842              "psrad $8, %%mm0                \n\t"\
843              "psrad $8, %%mm1                \n\t"\
844              "psrad $8, %%mm4                \n\t"\
845              "psrad $8, %%mm5                \n\t"\
846 \
847              "packssdw %%mm1, %%mm0          \n\t"\
848              "packssdw %%mm5, %%mm4          \n\t"\
849              "packuswb %%mm4, %%mm0          \n\t"\
850              "movq %%mm0, "write_offset"(%%"REG_d") \n\t"
851
852 #define snow_inner_add_yblock_mmx_end(s_step)\
853              "add $"s_step", %%"REG_S"             \n\t"\
854              "add %%"REG_c", "PTR_SIZE"*3(%%"REG_a");\n\t"\
855              "add %%"REG_c", "PTR_SIZE"*2(%%"REG_a");\n\t"\
856              "add %%"REG_c", "PTR_SIZE"*1(%%"REG_a");\n\t"\
857              "add %%"REG_c", (%%"REG_a")     \n\t"\
858              "add $"PTR_SIZE"*1, %1          \n\t"\
859              "add %%"REG_c", %0              \n\t"\
860              "dec %%"REG_b"                  \n\t"\
861              "jnz 1b                         \n\t"\
862              :"+m"(dst8),"+m"(dst_array)\
863              :\
864              "rm"((long)(src_x<<2)),"m"(obmc),"a"(block),"m"((long)b_h),"m"((long)src_stride):\
865              "%"REG_b"","%"REG_c"","%"REG_S"","%"REG_D"","%"REG_d"");
866
867 static void inner_add_yblock_bw_8_obmc_16_mmx(uint8_t *obmc, const long obmc_stride, uint8_t * * block, int b_w, long b_h,
868                       int src_x, int src_y, long src_stride, slice_buffer * sb, int add, uint8_t * dst8){
869 snow_inner_add_yblock_mmx_header
870 snow_inner_add_yblock_mmx_start("mm1", "mm5", "3", "0", "0")
871 snow_inner_add_yblock_mmx_accum("2", "8", "0")
872 snow_inner_add_yblock_mmx_accum("1", "128", "0")
873 snow_inner_add_yblock_mmx_accum("0", "136", "0")
874 snow_inner_add_yblock_mmx_mix("0", "0")
875 snow_inner_add_yblock_mmx_end("16")
876 }
877
878 static void inner_add_yblock_bw_16_obmc_32_mmx(uint8_t *obmc, const long obmc_stride, uint8_t * * block, int b_w, long b_h,
879                       int src_x, int src_y, long src_stride, slice_buffer * sb, int add, uint8_t * dst8){
880 snow_inner_add_yblock_mmx_header
881 snow_inner_add_yblock_mmx_start("mm1", "mm5", "3", "0", "0")
882 snow_inner_add_yblock_mmx_accum("2", "16", "0")
883 snow_inner_add_yblock_mmx_accum("1", "512", "0")
884 snow_inner_add_yblock_mmx_accum("0", "528", "0")
885 snow_inner_add_yblock_mmx_mix("0", "0")
886
887 snow_inner_add_yblock_mmx_start("mm1", "mm5", "3", "8", "8")
888 snow_inner_add_yblock_mmx_accum("2", "24", "8")
889 snow_inner_add_yblock_mmx_accum("1", "520", "8")
890 snow_inner_add_yblock_mmx_accum("0", "536", "8")
891 snow_inner_add_yblock_mmx_mix("32", "8")
892 snow_inner_add_yblock_mmx_end("32")
893 }
894
895 void ff_snow_inner_add_yblock_sse2(uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h,
896                            int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8){
897
898     if (b_w == 16)
899         inner_add_yblock_bw_16_obmc_32_sse2(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
900     else if (b_w == 8 && obmc_stride == 16) {
901         if (!(b_h & 1))
902             inner_add_yblock_bw_8_obmc_16_bh_even_sse2(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
903         else
904             inner_add_yblock_bw_8_obmc_16_mmx(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
905     } else
906          ff_snow_inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
907 }
908
909 void ff_snow_inner_add_yblock_mmx(uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h,
910                           int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8){
911     if (b_w == 16)
912         inner_add_yblock_bw_16_obmc_32_mmx(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
913     else if (b_w == 8 && obmc_stride == 16)
914         inner_add_yblock_bw_8_obmc_16_mmx(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
915     else
916         ff_snow_inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
917 }