Merge commit '740b0bf03b4bb8b0a0e964750817ac0363a33c55'
[ffmpeg.git] / libavcodec / x86 / snowdsp.c
1 /*
2  * MMX and SSE2 optimized snow DSP utils
3  * Copyright (c) 2005-2006 Robert Edele <yartrebo@earthlink.net>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "libavutil/cpu.h"
23 #include "libavutil/x86/asm.h"
24 #include "libavcodec/avcodec.h"
25 #include "libavcodec/snow.h"
26 #include "libavcodec/snow_dwt.h"
27
28 #if HAVE_INLINE_ASM
29
30 static void ff_snow_horizontal_compose97i_sse2(IDWTELEM *b, IDWTELEM *temp, int width){
31     const int w2= (width+1)>>1;
32     const int w_l= (width>>1);
33     const int w_r= w2 - 1;
34     int i;
35
36     { // Lift 0
37         IDWTELEM * const ref = b + w2 - 1;
38         IDWTELEM b_0 = b[0]; //By allowing the first entry in b[0] to be calculated twice
39         // (the first time erroneously), we allow the SSE2 code to run an extra pass.
40         // The savings in code and time are well worth having to store this value and
41         // calculate b[0] correctly afterwards.
42
43         i = 0;
44         __asm__ volatile(
45             "pcmpeqd   %%xmm7, %%xmm7         \n\t"
46             "pcmpeqd   %%xmm3, %%xmm3         \n\t"
47             "psllw         $1, %%xmm3         \n\t"
48             "paddw     %%xmm7, %%xmm3         \n\t"
49             "psllw        $13, %%xmm3         \n\t"
50         ::);
51         for(; i<w_l-15; i+=16){
52             __asm__ volatile(
53                 "movdqu   (%1), %%xmm1        \n\t"
54                 "movdqu 16(%1), %%xmm5        \n\t"
55                 "movdqu  2(%1), %%xmm2        \n\t"
56                 "movdqu 18(%1), %%xmm6        \n\t"
57                 "paddw  %%xmm1, %%xmm2        \n\t"
58                 "paddw  %%xmm5, %%xmm6        \n\t"
59                 "paddw  %%xmm7, %%xmm2        \n\t"
60                 "paddw  %%xmm7, %%xmm6        \n\t"
61                 "pmulhw %%xmm3, %%xmm2        \n\t"
62                 "pmulhw %%xmm3, %%xmm6        \n\t"
63                 "paddw    (%0), %%xmm2        \n\t"
64                 "paddw  16(%0), %%xmm6        \n\t"
65                 "movdqa %%xmm2, (%0)          \n\t"
66                 "movdqa %%xmm6, 16(%0)        \n\t"
67                 :: "r"(&b[i]), "r"(&ref[i])
68                 : "memory"
69             );
70         }
71         snow_horizontal_compose_lift_lead_out(i, b, b, ref, width, w_l, 0, W_DM, W_DO, W_DS);
72         b[0] = b_0 - ((W_DM * 2 * ref[1]+W_DO)>>W_DS);
73     }
74
75     { // Lift 1
76         IDWTELEM * const dst = b+w2;
77
78         i = 0;
79         for(; (((x86_reg)&dst[i]) & 0x1F) && i<w_r; i++){
80             dst[i] = dst[i] - (b[i] + b[i + 1]);
81         }
82         for(; i<w_r-15; i+=16){
83             __asm__ volatile(
84                 "movdqu   (%1), %%xmm1        \n\t"
85                 "movdqu 16(%1), %%xmm5        \n\t"
86                 "movdqu  2(%1), %%xmm2        \n\t"
87                 "movdqu 18(%1), %%xmm6        \n\t"
88                 "paddw  %%xmm1, %%xmm2        \n\t"
89                 "paddw  %%xmm5, %%xmm6        \n\t"
90                 "movdqa   (%0), %%xmm0        \n\t"
91                 "movdqa 16(%0), %%xmm4        \n\t"
92                 "psubw  %%xmm2, %%xmm0        \n\t"
93                 "psubw  %%xmm6, %%xmm4        \n\t"
94                 "movdqa %%xmm0, (%0)          \n\t"
95                 "movdqa %%xmm4, 16(%0)        \n\t"
96                 :: "r"(&dst[i]), "r"(&b[i])
97                 : "memory"
98             );
99         }
100         snow_horizontal_compose_lift_lead_out(i, dst, dst, b, width, w_r, 1, W_CM, W_CO, W_CS);
101     }
102
103     { // Lift 2
104         IDWTELEM * const ref = b+w2 - 1;
105         IDWTELEM b_0 = b[0];
106
107         i = 0;
108         __asm__ volatile(
109             "psllw         $15, %%xmm7        \n\t"
110             "pcmpeqw    %%xmm6, %%xmm6        \n\t"
111             "psrlw         $13, %%xmm6        \n\t"
112             "paddw      %%xmm7, %%xmm6        \n\t"
113         ::);
114         for(; i<w_l-15; i+=16){
115             __asm__ volatile(
116                 "movdqu   (%1), %%xmm0        \n\t"
117                 "movdqu 16(%1), %%xmm4        \n\t"
118                 "movdqu  2(%1), %%xmm1        \n\t"
119                 "movdqu 18(%1), %%xmm5        \n\t" //FIXME try aligned reads and shifts
120                 "paddw  %%xmm6, %%xmm0        \n\t"
121                 "paddw  %%xmm6, %%xmm4        \n\t"
122                 "paddw  %%xmm7, %%xmm1        \n\t"
123                 "paddw  %%xmm7, %%xmm5        \n\t"
124                 "pavgw  %%xmm1, %%xmm0        \n\t"
125                 "pavgw  %%xmm5, %%xmm4        \n\t"
126                 "psubw  %%xmm7, %%xmm0        \n\t"
127                 "psubw  %%xmm7, %%xmm4        \n\t"
128                 "psraw      $1, %%xmm0        \n\t"
129                 "psraw      $1, %%xmm4        \n\t"
130                 "movdqa   (%0), %%xmm1        \n\t"
131                 "movdqa 16(%0), %%xmm5        \n\t"
132                 "paddw  %%xmm1, %%xmm0        \n\t"
133                 "paddw  %%xmm5, %%xmm4        \n\t"
134                 "psraw      $2, %%xmm0        \n\t"
135                 "psraw      $2, %%xmm4        \n\t"
136                 "paddw  %%xmm1, %%xmm0        \n\t"
137                 "paddw  %%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-1 + 4 * b_0) >> W_BS);
146     }
147
148     { // Lift 3
149         IDWTELEM * const src = b+w2;
150
151         i = 0;
152         for(; (((x86_reg)&temp[i]) & 0x1F) && 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  2(%1), %%xmm2        \n\t"
158                 "movdqu 18(%1), %%xmm6        \n\t"
159                 "paddw    (%1), %%xmm2        \n\t"
160                 "paddw  16(%1), %%xmm6        \n\t"
161                 "movdqu   (%0), %%xmm0        \n\t"
162                 "movdqu 16(%0), %%xmm4        \n\t"
163                 "paddw  %%xmm2, %%xmm0        \n\t"
164                 "paddw  %%xmm6, %%xmm4        \n\t"
165                 "psraw      $1, %%xmm2        \n\t"
166                 "psraw      $1, %%xmm6        \n\t"
167                 "paddw  %%xmm0, %%xmm2        \n\t"
168                 "paddw  %%xmm4, %%xmm6        \n\t"
169                 "movdqa %%xmm2, (%2)          \n\t"
170                 "movdqa %%xmm6, 16(%2)        \n\t"
171                 :: "r"(&src[i]), "r"(&b[i]), "r"(&temp[i])
172                  : "memory"
173                );
174         }
175         snow_horizontal_compose_lift_lead_out(i, temp, src, b, width, w_r, 1, -W_AM, W_AO+1, W_AS);
176     }
177
178     {
179         snow_interleave_line_header(&i, width, b, temp);
180
181         for (; (i & 0x3E) != 0x3E; i-=2){
182             b[i+1] = temp[i>>1];
183             b[i] = b[i>>1];
184         }
185         for (i-=62; i>=0; i-=64){
186             __asm__ volatile(
187                 "movdqa      (%1), %%xmm0       \n\t"
188                 "movdqa    16(%1), %%xmm2       \n\t"
189                 "movdqa    32(%1), %%xmm4       \n\t"
190                 "movdqa    48(%1), %%xmm6       \n\t"
191                 "movdqa      (%1), %%xmm1       \n\t"
192                 "movdqa    16(%1), %%xmm3       \n\t"
193                 "movdqa    32(%1), %%xmm5       \n\t"
194                 "movdqa    48(%1), %%xmm7       \n\t"
195                 "punpcklwd   (%2), %%xmm0       \n\t"
196                 "punpcklwd 16(%2), %%xmm2       \n\t"
197                 "punpcklwd 32(%2), %%xmm4       \n\t"
198                 "punpcklwd 48(%2), %%xmm6       \n\t"
199                 "movdqa    %%xmm0, (%0)         \n\t"
200                 "movdqa    %%xmm2, 32(%0)       \n\t"
201                 "movdqa    %%xmm4, 64(%0)       \n\t"
202                 "movdqa    %%xmm6, 96(%0)       \n\t"
203                 "punpckhwd   (%2), %%xmm1       \n\t"
204                 "punpckhwd 16(%2), %%xmm3       \n\t"
205                 "punpckhwd 32(%2), %%xmm5       \n\t"
206                 "punpckhwd 48(%2), %%xmm7       \n\t"
207                 "movdqa    %%xmm1, 16(%0)       \n\t"
208                 "movdqa    %%xmm3, 48(%0)       \n\t"
209                 "movdqa    %%xmm5, 80(%0)       \n\t"
210                 "movdqa    %%xmm7, 112(%0)      \n\t"
211                 :: "r"(&(b)[i]), "r"(&(b)[i>>1]), "r"(&(temp)[i>>1])
212                  : "memory"
213                );
214         }
215     }
216 }
217
218 static void ff_snow_horizontal_compose97i_mmx(IDWTELEM *b, IDWTELEM *temp, int width){
219     const int w2= (width+1)>>1;
220     const int w_l= (width>>1);
221     const int w_r= w2 - 1;
222     int i;
223
224     { // Lift 0
225         IDWTELEM * const ref = b + w2 - 1;
226
227         i = 1;
228         b[0] = b[0] - ((W_DM * 2 * ref[1]+W_DO)>>W_DS);
229         __asm__ volatile(
230             "pcmpeqw    %%mm7, %%mm7         \n\t"
231             "pcmpeqw    %%mm3, %%mm3         \n\t"
232             "psllw         $1, %%mm3         \n\t"
233             "paddw      %%mm7, %%mm3         \n\t"
234             "psllw        $13, %%mm3         \n\t"
235            ::);
236         for(; i<w_l-7; i+=8){
237             __asm__ volatile(
238                 "movq     (%1), %%mm2        \n\t"
239                 "movq    8(%1), %%mm6        \n\t"
240                 "paddw   2(%1), %%mm2        \n\t"
241                 "paddw  10(%1), %%mm6        \n\t"
242                 "paddw   %%mm7, %%mm2        \n\t"
243                 "paddw   %%mm7, %%mm6        \n\t"
244                 "pmulhw  %%mm3, %%mm2        \n\t"
245                 "pmulhw  %%mm3, %%mm6        \n\t"
246                 "paddw    (%0), %%mm2        \n\t"
247                 "paddw   8(%0), %%mm6        \n\t"
248                 "movq    %%mm2, (%0)         \n\t"
249                 "movq    %%mm6, 8(%0)        \n\t"
250                 :: "r"(&b[i]), "r"(&ref[i])
251                  : "memory"
252                );
253         }
254         snow_horizontal_compose_lift_lead_out(i, b, b, ref, width, w_l, 0, W_DM, W_DO, W_DS);
255     }
256
257     { // Lift 1
258         IDWTELEM * const dst = b+w2;
259
260         i = 0;
261         for(; i<w_r-7; i+=8){
262             __asm__ volatile(
263                 "movq     (%1), %%mm2        \n\t"
264                 "movq    8(%1), %%mm6        \n\t"
265                 "paddw   2(%1), %%mm2        \n\t"
266                 "paddw  10(%1), %%mm6        \n\t"
267                 "movq     (%0), %%mm0        \n\t"
268                 "movq    8(%0), %%mm4        \n\t"
269                 "psubw   %%mm2, %%mm0        \n\t"
270                 "psubw   %%mm6, %%mm4        \n\t"
271                 "movq    %%mm0, (%0)         \n\t"
272                 "movq    %%mm4, 8(%0)        \n\t"
273                 :: "r"(&dst[i]), "r"(&b[i])
274                  : "memory"
275                );
276         }
277         snow_horizontal_compose_lift_lead_out(i, dst, dst, b, width, w_r, 1, W_CM, W_CO, W_CS);
278     }
279
280     { // Lift 2
281         IDWTELEM * const ref = b+w2 - 1;
282
283         i = 1;
284         b[0] = b[0] + (((2 * ref[1] + W_BO) + 4 * b[0]) >> W_BS);
285         __asm__ volatile(
286             "psllw         $15, %%mm7        \n\t"
287             "pcmpeqw     %%mm6, %%mm6        \n\t"
288             "psrlw         $13, %%mm6        \n\t"
289             "paddw       %%mm7, %%mm6        \n\t"
290            ::);
291         for(; i<w_l-7; i+=8){
292             __asm__ volatile(
293                 "movq     (%1), %%mm0        \n\t"
294                 "movq    8(%1), %%mm4        \n\t"
295                 "movq    2(%1), %%mm1        \n\t"
296                 "movq   10(%1), %%mm5        \n\t"
297                 "paddw   %%mm6, %%mm0        \n\t"
298                 "paddw   %%mm6, %%mm4        \n\t"
299                 "paddw   %%mm7, %%mm1        \n\t"
300                 "paddw   %%mm7, %%mm5        \n\t"
301                 "pavgw   %%mm1, %%mm0        \n\t"
302                 "pavgw   %%mm5, %%mm4        \n\t"
303                 "psubw   %%mm7, %%mm0        \n\t"
304                 "psubw   %%mm7, %%mm4        \n\t"
305                 "psraw      $1, %%mm0        \n\t"
306                 "psraw      $1, %%mm4        \n\t"
307                 "movq     (%0), %%mm1        \n\t"
308                 "movq    8(%0), %%mm5        \n\t"
309                 "paddw   %%mm1, %%mm0        \n\t"
310                 "paddw   %%mm5, %%mm4        \n\t"
311                 "psraw      $2, %%mm0        \n\t"
312                 "psraw      $2, %%mm4        \n\t"
313                 "paddw   %%mm1, %%mm0        \n\t"
314                 "paddw   %%mm5, %%mm4        \n\t"
315                 "movq    %%mm0, (%0)         \n\t"
316                 "movq    %%mm4, 8(%0)        \n\t"
317                 :: "r"(&b[i]), "r"(&ref[i])
318                  : "memory"
319                );
320         }
321         snow_horizontal_compose_liftS_lead_out(i, b, b, ref, width, w_l);
322     }
323
324     { // Lift 3
325         IDWTELEM * const src = b+w2;
326         i = 0;
327
328         for(; i<w_r-7; i+=8){
329             __asm__ volatile(
330                 "movq    2(%1), %%mm2        \n\t"
331                 "movq   10(%1), %%mm6        \n\t"
332                 "paddw    (%1), %%mm2        \n\t"
333                 "paddw   8(%1), %%mm6        \n\t"
334                 "movq     (%0), %%mm0        \n\t"
335                 "movq    8(%0), %%mm4        \n\t"
336                 "paddw   %%mm2, %%mm0        \n\t"
337                 "paddw   %%mm6, %%mm4        \n\t"
338                 "psraw      $1, %%mm2        \n\t"
339                 "psraw      $1, %%mm6        \n\t"
340                 "paddw   %%mm0, %%mm2        \n\t"
341                 "paddw   %%mm4, %%mm6        \n\t"
342                 "movq    %%mm2, (%2)         \n\t"
343                 "movq    %%mm6, 8(%2)        \n\t"
344                 :: "r"(&src[i]), "r"(&b[i]), "r"(&temp[i])
345                  : "memory"
346                );
347         }
348         snow_horizontal_compose_lift_lead_out(i, temp, src, b, width, w_r, 1, -W_AM, W_AO+1, W_AS);
349     }
350
351     {
352         snow_interleave_line_header(&i, width, b, temp);
353
354         for (; (i & 0x1E) != 0x1E; i-=2){
355             b[i+1] = temp[i>>1];
356             b[i] = b[i>>1];
357         }
358         for (i-=30; i>=0; i-=32){
359             __asm__ volatile(
360                 "movq        (%1), %%mm0       \n\t"
361                 "movq       8(%1), %%mm2       \n\t"
362                 "movq      16(%1), %%mm4       \n\t"
363                 "movq      24(%1), %%mm6       \n\t"
364                 "movq        (%1), %%mm1       \n\t"
365                 "movq       8(%1), %%mm3       \n\t"
366                 "movq      16(%1), %%mm5       \n\t"
367                 "movq      24(%1), %%mm7       \n\t"
368                 "punpcklwd   (%2), %%mm0       \n\t"
369                 "punpcklwd  8(%2), %%mm2       \n\t"
370                 "punpcklwd 16(%2), %%mm4       \n\t"
371                 "punpcklwd 24(%2), %%mm6       \n\t"
372                 "movq       %%mm0, (%0)        \n\t"
373                 "movq       %%mm2, 16(%0)      \n\t"
374                 "movq       %%mm4, 32(%0)      \n\t"
375                 "movq       %%mm6, 48(%0)      \n\t"
376                 "punpckhwd   (%2), %%mm1       \n\t"
377                 "punpckhwd  8(%2), %%mm3       \n\t"
378                 "punpckhwd 16(%2), %%mm5       \n\t"
379                 "punpckhwd 24(%2), %%mm7       \n\t"
380                 "movq       %%mm1, 8(%0)       \n\t"
381                 "movq       %%mm3, 24(%0)      \n\t"
382                 "movq       %%mm5, 40(%0)      \n\t"
383                 "movq       %%mm7, 56(%0)      \n\t"
384                 :: "r"(&b[i]), "r"(&b[i>>1]), "r"(&temp[i>>1])
385                  : "memory"
386                );
387         }
388     }
389 }
390
391 #if HAVE_7REGS
392 #define snow_vertical_compose_sse2_load_add(op,r,t0,t1,t2,t3)\
393         ""op" ("r",%%"FF_REG_d"), %%"t0"      \n\t"\
394         ""op" 16("r",%%"FF_REG_d"), %%"t1"    \n\t"\
395         ""op" 32("r",%%"FF_REG_d"), %%"t2"    \n\t"\
396         ""op" 48("r",%%"FF_REG_d"), %%"t3"    \n\t"
397
398 #define snow_vertical_compose_sse2_load(r,t0,t1,t2,t3)\
399         snow_vertical_compose_sse2_load_add("movdqa",r,t0,t1,t2,t3)
400
401 #define snow_vertical_compose_sse2_add(r,t0,t1,t2,t3)\
402         snow_vertical_compose_sse2_load_add("paddw",r,t0,t1,t2,t3)
403
404 #define snow_vertical_compose_r2r_sub(s0,s1,s2,s3,t0,t1,t2,t3)\
405         "psubw %%"s0", %%"t0" \n\t"\
406         "psubw %%"s1", %%"t1" \n\t"\
407         "psubw %%"s2", %%"t2" \n\t"\
408         "psubw %%"s3", %%"t3" \n\t"
409
410 #define snow_vertical_compose_sse2_store(w,s0,s1,s2,s3)\
411         "movdqa %%"s0", ("w",%%"FF_REG_d")    \n\t"\
412         "movdqa %%"s1", 16("w",%%"FF_REG_d")  \n\t"\
413         "movdqa %%"s2", 32("w",%%"FF_REG_d")  \n\t"\
414         "movdqa %%"s3", 48("w",%%"FF_REG_d")  \n\t"
415
416 #define snow_vertical_compose_sra(n,t0,t1,t2,t3)\
417         "psraw $"n", %%"t0" \n\t"\
418         "psraw $"n", %%"t1" \n\t"\
419         "psraw $"n", %%"t2" \n\t"\
420         "psraw $"n", %%"t3" \n\t"
421
422 #define snow_vertical_compose_r2r_add(s0,s1,s2,s3,t0,t1,t2,t3)\
423         "paddw %%"s0", %%"t0" \n\t"\
424         "paddw %%"s1", %%"t1" \n\t"\
425         "paddw %%"s2", %%"t2" \n\t"\
426         "paddw %%"s3", %%"t3" \n\t"
427
428 #define snow_vertical_compose_r2r_pmulhw(s0,s1,s2,s3,t0,t1,t2,t3)\
429         "pmulhw %%"s0", %%"t0" \n\t"\
430         "pmulhw %%"s1", %%"t1" \n\t"\
431         "pmulhw %%"s2", %%"t2" \n\t"\
432         "pmulhw %%"s3", %%"t3" \n\t"
433
434 #define snow_vertical_compose_sse2_move(s0,s1,s2,s3,t0,t1,t2,t3)\
435         "movdqa %%"s0", %%"t0" \n\t"\
436         "movdqa %%"s1", %%"t1" \n\t"\
437         "movdqa %%"s2", %%"t2" \n\t"\
438         "movdqa %%"s3", %%"t3" \n\t"
439
440 static void ff_snow_vertical_compose97i_sse2(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width){
441     x86_reg i = width;
442
443     while(i & 0x1F)
444     {
445         i--;
446         b4[i] -= (W_DM*(b3[i] + b5[i])+W_DO)>>W_DS;
447         b3[i] -= (W_CM*(b2[i] + b4[i])+W_CO)>>W_CS;
448         b2[i] += (W_BM*(b1[i] + b3[i])+4*b2[i]+W_BO)>>W_BS;
449         b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
450     }
451     i+=i;
452
453          __asm__ volatile (
454         "jmp 2f                                      \n\t"
455         "1:                                          \n\t"
456         snow_vertical_compose_sse2_load("%4","xmm0","xmm2","xmm4","xmm6")
457         snow_vertical_compose_sse2_add("%6","xmm0","xmm2","xmm4","xmm6")
458
459
460         "pcmpeqw    %%xmm0, %%xmm0                   \n\t"
461         "pcmpeqw    %%xmm2, %%xmm2                   \n\t"
462         "paddw      %%xmm2, %%xmm2                   \n\t"
463         "paddw      %%xmm0, %%xmm2                   \n\t"
464         "psllw         $13, %%xmm2                   \n\t"
465         snow_vertical_compose_r2r_add("xmm0","xmm0","xmm0","xmm0","xmm1","xmm3","xmm5","xmm7")
466         snow_vertical_compose_r2r_pmulhw("xmm2","xmm2","xmm2","xmm2","xmm1","xmm3","xmm5","xmm7")
467         snow_vertical_compose_sse2_add("%5","xmm1","xmm3","xmm5","xmm7")
468         snow_vertical_compose_sse2_store("%5","xmm1","xmm3","xmm5","xmm7")
469         snow_vertical_compose_sse2_load("%4","xmm0","xmm2","xmm4","xmm6")
470         snow_vertical_compose_sse2_add("%3","xmm1","xmm3","xmm5","xmm7")
471         snow_vertical_compose_r2r_sub("xmm1","xmm3","xmm5","xmm7","xmm0","xmm2","xmm4","xmm6")
472         snow_vertical_compose_sse2_store("%4","xmm0","xmm2","xmm4","xmm6")
473
474         "pcmpeqw %%xmm7, %%xmm7                      \n\t"
475         "pcmpeqw %%xmm5, %%xmm5                      \n\t"
476         "psllw $15, %%xmm7                           \n\t"
477         "psrlw $13, %%xmm5                           \n\t"
478         "paddw %%xmm7, %%xmm5                        \n\t"
479         snow_vertical_compose_r2r_add("xmm5","xmm5","xmm5","xmm5","xmm0","xmm2","xmm4","xmm6")
480         "movq   (%2,%%"FF_REG_d"), %%xmm1            \n\t"
481         "movq  8(%2,%%"FF_REG_d"), %%xmm3            \n\t"
482         "paddw %%xmm7, %%xmm1                        \n\t"
483         "paddw %%xmm7, %%xmm3                        \n\t"
484         "pavgw %%xmm1, %%xmm0                        \n\t"
485         "pavgw %%xmm3, %%xmm2                        \n\t"
486         "movq 16(%2,%%"FF_REG_d"), %%xmm1            \n\t"
487         "movq 24(%2,%%"FF_REG_d"), %%xmm3            \n\t"
488         "paddw %%xmm7, %%xmm1                        \n\t"
489         "paddw %%xmm7, %%xmm3                        \n\t"
490         "pavgw %%xmm1, %%xmm4                        \n\t"
491         "pavgw %%xmm3, %%xmm6                        \n\t"
492         snow_vertical_compose_r2r_sub("xmm7","xmm7","xmm7","xmm7","xmm0","xmm2","xmm4","xmm6")
493         snow_vertical_compose_sra("1","xmm0","xmm2","xmm4","xmm6")
494         snow_vertical_compose_sse2_add("%3","xmm0","xmm2","xmm4","xmm6")
495
496         snow_vertical_compose_sra("2","xmm0","xmm2","xmm4","xmm6")
497         snow_vertical_compose_sse2_add("%3","xmm0","xmm2","xmm4","xmm6")
498         snow_vertical_compose_sse2_store("%3","xmm0","xmm2","xmm4","xmm6")
499         snow_vertical_compose_sse2_add("%1","xmm0","xmm2","xmm4","xmm6")
500         snow_vertical_compose_sse2_move("xmm0","xmm2","xmm4","xmm6","xmm1","xmm3","xmm5","xmm7")
501         snow_vertical_compose_sra("1","xmm0","xmm2","xmm4","xmm6")
502         snow_vertical_compose_r2r_add("xmm1","xmm3","xmm5","xmm7","xmm0","xmm2","xmm4","xmm6")
503         snow_vertical_compose_sse2_add("%2","xmm0","xmm2","xmm4","xmm6")
504         snow_vertical_compose_sse2_store("%2","xmm0","xmm2","xmm4","xmm6")
505
506         "2:                                          \n\t"
507         "sub $64, %%"FF_REG_d"                       \n\t"
508         "jge 1b                                      \n\t"
509         :"+d"(i)
510         :"r"(b0),"r"(b1),"r"(b2),"r"(b3),"r"(b4),"r"(b5));
511 }
512
513 #define snow_vertical_compose_mmx_load_add(op,r,t0,t1,t2,t3)\
514         ""op" ("r",%%"FF_REG_d"), %%"t0"   \n\t"\
515         ""op" 8("r",%%"FF_REG_d"), %%"t1"  \n\t"\
516         ""op" 16("r",%%"FF_REG_d"), %%"t2" \n\t"\
517         ""op" 24("r",%%"FF_REG_d"), %%"t3" \n\t"
518
519 #define snow_vertical_compose_mmx_load(r,t0,t1,t2,t3)\
520         snow_vertical_compose_mmx_load_add("movq",r,t0,t1,t2,t3)
521
522 #define snow_vertical_compose_mmx_add(r,t0,t1,t2,t3)\
523         snow_vertical_compose_mmx_load_add("paddw",r,t0,t1,t2,t3)
524
525 #define snow_vertical_compose_mmx_store(w,s0,s1,s2,s3)\
526         "movq %%"s0", ("w",%%"FF_REG_d")   \n\t"\
527         "movq %%"s1", 8("w",%%"FF_REG_d")  \n\t"\
528         "movq %%"s2", 16("w",%%"FF_REG_d") \n\t"\
529         "movq %%"s3", 24("w",%%"FF_REG_d") \n\t"
530
531 #define snow_vertical_compose_mmx_move(s0,s1,s2,s3,t0,t1,t2,t3)\
532         "movq %%"s0", %%"t0" \n\t"\
533         "movq %%"s1", %%"t1" \n\t"\
534         "movq %%"s2", %%"t2" \n\t"\
535         "movq %%"s3", %%"t3" \n\t"
536
537
538 static void ff_snow_vertical_compose97i_mmx(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width){
539     x86_reg i = width;
540     while(i & 15)
541     {
542         i--;
543         b4[i] -= (W_DM*(b3[i] + b5[i])+W_DO)>>W_DS;
544         b3[i] -= (W_CM*(b2[i] + b4[i])+W_CO)>>W_CS;
545         b2[i] += (W_BM*(b1[i] + b3[i])+4*b2[i]+W_BO)>>W_BS;
546         b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
547     }
548     i+=i;
549     __asm__ volatile(
550         "jmp 2f                                      \n\t"
551         "1:                                          \n\t"
552
553         snow_vertical_compose_mmx_load("%4","mm1","mm3","mm5","mm7")
554         snow_vertical_compose_mmx_add("%6","mm1","mm3","mm5","mm7")
555         "pcmpeqw    %%mm0, %%mm0                     \n\t"
556         "pcmpeqw    %%mm2, %%mm2                     \n\t"
557         "paddw      %%mm2, %%mm2                     \n\t"
558         "paddw      %%mm0, %%mm2                     \n\t"
559         "psllw        $13, %%mm2                     \n\t"
560         snow_vertical_compose_r2r_add("mm0","mm0","mm0","mm0","mm1","mm3","mm5","mm7")
561         snow_vertical_compose_r2r_pmulhw("mm2","mm2","mm2","mm2","mm1","mm3","mm5","mm7")
562         snow_vertical_compose_mmx_add("%5","mm1","mm3","mm5","mm7")
563         snow_vertical_compose_mmx_store("%5","mm1","mm3","mm5","mm7")
564         snow_vertical_compose_mmx_load("%4","mm0","mm2","mm4","mm6")
565         snow_vertical_compose_mmx_add("%3","mm1","mm3","mm5","mm7")
566         snow_vertical_compose_r2r_sub("mm1","mm3","mm5","mm7","mm0","mm2","mm4","mm6")
567         snow_vertical_compose_mmx_store("%4","mm0","mm2","mm4","mm6")
568         "pcmpeqw %%mm7, %%mm7                        \n\t"
569         "pcmpeqw %%mm5, %%mm5                        \n\t"
570         "psllw $15, %%mm7                            \n\t"
571         "psrlw $13, %%mm5                            \n\t"
572         "paddw %%mm7, %%mm5                          \n\t"
573         snow_vertical_compose_r2r_add("mm5","mm5","mm5","mm5","mm0","mm2","mm4","mm6")
574         "movq   (%2,%%"FF_REG_d"), %%mm1             \n\t"
575         "movq  8(%2,%%"FF_REG_d"), %%mm3             \n\t"
576         "paddw %%mm7, %%mm1                          \n\t"
577         "paddw %%mm7, %%mm3                          \n\t"
578         "pavgw %%mm1, %%mm0                          \n\t"
579         "pavgw %%mm3, %%mm2                          \n\t"
580         "movq 16(%2,%%"FF_REG_d"), %%mm1             \n\t"
581         "movq 24(%2,%%"FF_REG_d"), %%mm3             \n\t"
582         "paddw %%mm7, %%mm1                          \n\t"
583         "paddw %%mm7, %%mm3                          \n\t"
584         "pavgw %%mm1, %%mm4                          \n\t"
585         "pavgw %%mm3, %%mm6                          \n\t"
586         snow_vertical_compose_r2r_sub("mm7","mm7","mm7","mm7","mm0","mm2","mm4","mm6")
587         snow_vertical_compose_sra("1","mm0","mm2","mm4","mm6")
588         snow_vertical_compose_mmx_add("%3","mm0","mm2","mm4","mm6")
589
590         snow_vertical_compose_sra("2","mm0","mm2","mm4","mm6")
591         snow_vertical_compose_mmx_add("%3","mm0","mm2","mm4","mm6")
592         snow_vertical_compose_mmx_store("%3","mm0","mm2","mm4","mm6")
593         snow_vertical_compose_mmx_add("%1","mm0","mm2","mm4","mm6")
594         snow_vertical_compose_mmx_move("mm0","mm2","mm4","mm6","mm1","mm3","mm5","mm7")
595         snow_vertical_compose_sra("1","mm0","mm2","mm4","mm6")
596         snow_vertical_compose_r2r_add("mm1","mm3","mm5","mm7","mm0","mm2","mm4","mm6")
597         snow_vertical_compose_mmx_add("%2","mm0","mm2","mm4","mm6")
598         snow_vertical_compose_mmx_store("%2","mm0","mm2","mm4","mm6")
599
600         "2:                                          \n\t"
601         "sub $32, %%"FF_REG_d"                       \n\t"
602         "jge 1b                                      \n\t"
603         :"+d"(i)
604         :"r"(b0),"r"(b1),"r"(b2),"r"(b3),"r"(b4),"r"(b5));
605 }
606 #endif //HAVE_7REGS
607
608 #if HAVE_6REGS
609 #define snow_inner_add_yblock_sse2_header \
610     IDWTELEM * * dst_array = sb->line + src_y;\
611     x86_reg tmp;\
612     __asm__ volatile(\
613              "mov  %7, %%"FF_REG_c"          \n\t"\
614              "mov  %6, %2                    \n\t"\
615              "mov  %4, %%"FF_REG_S"          \n\t"\
616              "pxor %%xmm7, %%xmm7            \n\t" /* 0 */\
617              "pcmpeqd %%xmm3, %%xmm3         \n\t"\
618              "psllw $15, %%xmm3              \n\t"\
619              "psrlw $12, %%xmm3              \n\t" /* FRAC_BITS >> 1 */\
620              "1:                             \n\t"\
621              "mov %1, %%"FF_REG_D"           \n\t"\
622              "mov (%%"FF_REG_D"), %%"FF_REG_D" \n\t"\
623              "add %3, %%"FF_REG_D"           \n\t"
624
625 #define snow_inner_add_yblock_sse2_start_8(out_reg1, out_reg2, ptr_offset, s_offset)\
626              "mov "FF_PTR_SIZE"*"ptr_offset"(%%"FF_REG_a"), %%"FF_REG_d"; \n\t"\
627              "movq (%%"FF_REG_d"), %%"out_reg1"                           \n\t"\
628              "movq (%%"FF_REG_d", %%"FF_REG_c"), %%"out_reg2"             \n\t"\
629              "punpcklbw %%xmm7, %%"out_reg1" \n\t"\
630              "punpcklbw %%xmm7, %%"out_reg2" \n\t"\
631              "movq "s_offset"(%%"FF_REG_S"), %%xmm0    \n\t"\
632              "movq "s_offset"+16(%%"FF_REG_S"), %%xmm4 \n\t"\
633              "punpcklbw %%xmm7, %%xmm0       \n\t"\
634              "punpcklbw %%xmm7, %%xmm4       \n\t"\
635              "pmullw %%xmm0, %%"out_reg1"    \n\t"\
636              "pmullw %%xmm4, %%"out_reg2"    \n\t"
637
638 #define snow_inner_add_yblock_sse2_start_16(out_reg1, out_reg2, ptr_offset, s_offset)\
639              "mov "FF_PTR_SIZE"*"ptr_offset"(%%"FF_REG_a"), %%"FF_REG_d"; \n\t"\
640              "movq (%%"FF_REG_d"), %%"out_reg1"                           \n\t"\
641              "movq 8(%%"FF_REG_d"), %%"out_reg2"                          \n\t"\
642              "punpcklbw %%xmm7, %%"out_reg1" \n\t"\
643              "punpcklbw %%xmm7, %%"out_reg2" \n\t"\
644              "movq "s_offset"(%%"FF_REG_S"), %%xmm0   \n\t"\
645              "movq "s_offset"+8(%%"FF_REG_S"), %%xmm4 \n\t"\
646              "punpcklbw %%xmm7, %%xmm0       \n\t"\
647              "punpcklbw %%xmm7, %%xmm4       \n\t"\
648              "pmullw %%xmm0, %%"out_reg1"    \n\t"\
649              "pmullw %%xmm4, %%"out_reg2"    \n\t"
650
651 #define snow_inner_add_yblock_sse2_accum_8(ptr_offset, s_offset) \
652              snow_inner_add_yblock_sse2_start_8("xmm2", "xmm6", ptr_offset, s_offset)\
653              "paddusw %%xmm2, %%xmm1         \n\t"\
654              "paddusw %%xmm6, %%xmm5         \n\t"
655
656 #define snow_inner_add_yblock_sse2_accum_16(ptr_offset, s_offset) \
657              snow_inner_add_yblock_sse2_start_16("xmm2", "xmm6", ptr_offset, s_offset)\
658              "paddusw %%xmm2, %%xmm1         \n\t"\
659              "paddusw %%xmm6, %%xmm5         \n\t"
660
661 #define snow_inner_add_yblock_sse2_end_common1\
662              "add $32, %%"FF_REG_S"                            \n\t"\
663              "add %%"FF_REG_c", %0                             \n\t"\
664              "add %%"FF_REG_c", "FF_PTR_SIZE"*3(%%"FF_REG_a"); \n\t"\
665              "add %%"FF_REG_c", "FF_PTR_SIZE"*2(%%"FF_REG_a"); \n\t"\
666              "add %%"FF_REG_c", "FF_PTR_SIZE"*1(%%"FF_REG_a"); \n\t"\
667              "add %%"FF_REG_c", (%%"FF_REG_a")                 \n\t"
668
669 #define snow_inner_add_yblock_sse2_end_common2\
670              "jnz 1b                         \n\t"\
671              :"+m"(dst8),"+m"(dst_array),"=&r"(tmp)\
672              :\
673              "rm"((x86_reg)(src_x<<1)),"m"(obmc),"a"(block),"m"(b_h),"m"(src_stride):\
674              XMM_CLOBBERS("%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7", )\
675              "%"FF_REG_c"","%"FF_REG_S"","%"FF_REG_D"","%"FF_REG_d"");
676
677 #define snow_inner_add_yblock_sse2_end_8\
678              "sal $1, %%"FF_REG_c"                \n\t"\
679              "add"FF_OPSIZE" $"FF_PTR_SIZE"*2, %1 \n\t"\
680              snow_inner_add_yblock_sse2_end_common1\
681              "sar $1, %%"FF_REG_c"           \n\t"\
682              "sub $2, %2                     \n\t"\
683              snow_inner_add_yblock_sse2_end_common2
684
685 #define snow_inner_add_yblock_sse2_end_16\
686              "add"FF_OPSIZE" $"FF_PTR_SIZE"*1, %1 \n\t"\
687              snow_inner_add_yblock_sse2_end_common1\
688              "dec %2                         \n\t"\
689              snow_inner_add_yblock_sse2_end_common2
690
691 static void inner_add_yblock_bw_8_obmc_16_bh_even_sse2(const uint8_t *obmc, const x86_reg obmc_stride, uint8_t * * block, int b_w, x86_reg b_h,
692                       int src_x, int src_y, x86_reg src_stride, slice_buffer * sb, int add, uint8_t * dst8){
693 snow_inner_add_yblock_sse2_header
694 snow_inner_add_yblock_sse2_start_8("xmm1", "xmm5", "3", "0")
695 snow_inner_add_yblock_sse2_accum_8("2", "8")
696 snow_inner_add_yblock_sse2_accum_8("1", "128")
697 snow_inner_add_yblock_sse2_accum_8("0", "136")
698
699              "mov %0, %%"FF_REG_d"           \n\t"
700              "movdqa (%%"FF_REG_D"), %%xmm0  \n\t"
701              "movdqa %%xmm1, %%xmm2          \n\t"
702
703              "punpckhwd %%xmm7, %%xmm1       \n\t"
704              "punpcklwd %%xmm7, %%xmm2       \n\t"
705              "paddd %%xmm2, %%xmm0           \n\t"
706              "movdqa 16(%%"FF_REG_D"), %%xmm2\n\t"
707              "paddd %%xmm1, %%xmm2           \n\t"
708              "paddd %%xmm3, %%xmm0           \n\t"
709              "paddd %%xmm3, %%xmm2           \n\t"
710
711              "mov %1, %%"FF_REG_D"           \n\t"
712              "mov "FF_PTR_SIZE"(%%"FF_REG_D"), %%"FF_REG_D"; \n\t"
713              "add %3, %%"FF_REG_D"           \n\t"
714
715              "movdqa (%%"FF_REG_D"), %%xmm4  \n\t"
716              "movdqa %%xmm5, %%xmm6          \n\t"
717              "punpckhwd %%xmm7, %%xmm5       \n\t"
718              "punpcklwd %%xmm7, %%xmm6       \n\t"
719              "paddd %%xmm6, %%xmm4           \n\t"
720              "movdqa 16(%%"FF_REG_D"), %%xmm6\n\t"
721              "paddd %%xmm5, %%xmm6           \n\t"
722              "paddd %%xmm3, %%xmm4           \n\t"
723              "paddd %%xmm3, %%xmm6           \n\t"
724
725              "psrad $8, %%xmm0               \n\t" /* FRAC_BITS. */
726              "psrad $8, %%xmm2               \n\t" /* FRAC_BITS. */
727              "packssdw %%xmm2, %%xmm0        \n\t"
728              "packuswb %%xmm7, %%xmm0        \n\t"
729              "movq %%xmm0, (%%"FF_REG_d")    \n\t"
730
731              "psrad $8, %%xmm4               \n\t" /* FRAC_BITS. */
732              "psrad $8, %%xmm6               \n\t" /* FRAC_BITS. */
733              "packssdw %%xmm6, %%xmm4        \n\t"
734              "packuswb %%xmm7, %%xmm4        \n\t"
735              "movq %%xmm4, (%%"FF_REG_d",%%"FF_REG_c"); \n\t"
736 snow_inner_add_yblock_sse2_end_8
737 }
738
739 static void inner_add_yblock_bw_16_obmc_32_sse2(const uint8_t *obmc, const x86_reg obmc_stride, uint8_t * * block, int b_w, x86_reg b_h,
740                       int src_x, int src_y, x86_reg src_stride, slice_buffer * sb, int add, uint8_t * dst8){
741 snow_inner_add_yblock_sse2_header
742 snow_inner_add_yblock_sse2_start_16("xmm1", "xmm5", "3", "0")
743 snow_inner_add_yblock_sse2_accum_16("2", "16")
744 snow_inner_add_yblock_sse2_accum_16("1", "512")
745 snow_inner_add_yblock_sse2_accum_16("0", "528")
746
747              "mov %0, %%"FF_REG_d"           \n\t"
748              "psrlw $4, %%xmm1               \n\t"
749              "psrlw $4, %%xmm5               \n\t"
750              "paddw   (%%"FF_REG_D"), %%xmm1 \n\t"
751              "paddw 16(%%"FF_REG_D"), %%xmm5 \n\t"
752              "paddw %%xmm3, %%xmm1           \n\t"
753              "paddw %%xmm3, %%xmm5           \n\t"
754              "psraw $4, %%xmm1               \n\t" /* FRAC_BITS. */
755              "psraw $4, %%xmm5               \n\t" /* FRAC_BITS. */
756              "packuswb %%xmm5, %%xmm1        \n\t"
757
758              "movdqu %%xmm1, (%%"FF_REG_d")  \n\t"
759
760 snow_inner_add_yblock_sse2_end_16
761 }
762
763 #define snow_inner_add_yblock_mmx_header \
764     IDWTELEM * * dst_array = sb->line + src_y;\
765     x86_reg tmp;\
766     __asm__ volatile(\
767              "mov  %7, %%"FF_REG_c"          \n\t"\
768              "mov  %6, %2                    \n\t"\
769              "mov  %4, %%"FF_REG_S"          \n\t"\
770              "pxor %%mm7, %%mm7              \n\t" /* 0 */\
771              "pcmpeqd %%mm3, %%mm3           \n\t"\
772              "psllw $15, %%mm3               \n\t"\
773              "psrlw $12, %%mm3               \n\t" /* FRAC_BITS >> 1 */\
774              "1:                             \n\t"\
775              "mov %1, %%"FF_REG_D"           \n\t"\
776              "mov (%%"FF_REG_D"), %%"FF_REG_D" \n\t"\
777              "add %3, %%"FF_REG_D"           \n\t"
778
779 #define snow_inner_add_yblock_mmx_start(out_reg1, out_reg2, ptr_offset, s_offset, d_offset)\
780              "mov "FF_PTR_SIZE"*"ptr_offset"(%%"FF_REG_a"), %%"FF_REG_d"; \n\t"\
781              "movd "d_offset"(%%"FF_REG_d"), %%"out_reg1"                 \n\t"\
782              "movd "d_offset"+4(%%"FF_REG_d"), %%"out_reg2"               \n\t"\
783              "punpcklbw %%mm7, %%"out_reg1" \n\t"\
784              "punpcklbw %%mm7, %%"out_reg2" \n\t"\
785              "movd "s_offset"(%%"FF_REG_S"), %%mm0   \n\t"\
786              "movd "s_offset"+4(%%"FF_REG_S"), %%mm4 \n\t"\
787              "punpcklbw %%mm7, %%mm0       \n\t"\
788              "punpcklbw %%mm7, %%mm4       \n\t"\
789              "pmullw %%mm0, %%"out_reg1"   \n\t"\
790              "pmullw %%mm4, %%"out_reg2"   \n\t"
791
792 #define snow_inner_add_yblock_mmx_accum(ptr_offset, s_offset, d_offset) \
793              snow_inner_add_yblock_mmx_start("mm2", "mm6", ptr_offset, s_offset, d_offset)\
794              "paddusw %%mm2, %%mm1         \n\t"\
795              "paddusw %%mm6, %%mm5         \n\t"
796
797 #define snow_inner_add_yblock_mmx_mix(read_offset, write_offset)\
798              "mov %0, %%"FF_REG_d"           \n\t"\
799              "psrlw $4, %%mm1                \n\t"\
800              "psrlw $4, %%mm5                \n\t"\
801              "paddw "read_offset"(%%"FF_REG_D"), %%mm1   \n\t"\
802              "paddw "read_offset"+8(%%"FF_REG_D"), %%mm5 \n\t"\
803              "paddw %%mm3, %%mm1             \n\t"\
804              "paddw %%mm3, %%mm5             \n\t"\
805              "psraw $4, %%mm1                \n\t"\
806              "psraw $4, %%mm5                \n\t"\
807              "packuswb %%mm5, %%mm1          \n\t"\
808              "movq %%mm1, "write_offset"(%%"FF_REG_d") \n\t"
809
810 #define snow_inner_add_yblock_mmx_end(s_step)\
811              "add $"s_step", %%"FF_REG_S"                      \n\t"\
812              "add %%"FF_REG_c", "FF_PTR_SIZE"*3(%%"FF_REG_a"); \n\t"\
813              "add %%"FF_REG_c", "FF_PTR_SIZE"*2(%%"FF_REG_a"); \n\t"\
814              "add %%"FF_REG_c", "FF_PTR_SIZE"*1(%%"FF_REG_a"); \n\t"\
815              "add %%"FF_REG_c", (%%"FF_REG_a")                 \n\t"\
816              "add"FF_OPSIZE " $"FF_PTR_SIZE"*1, %1             \n\t"\
817              "add %%"FF_REG_c", %0                             \n\t"\
818              "dec %2                         \n\t"\
819              "jnz 1b                         \n\t"\
820              :"+m"(dst8),"+m"(dst_array),"=&r"(tmp)\
821              :\
822              "rm"((x86_reg)(src_x<<1)),"m"(obmc),"a"(block),"m"(b_h),"m"(src_stride):\
823              "%"FF_REG_c"","%"FF_REG_S"","%"FF_REG_D"","%"FF_REG_d"");
824
825 static void inner_add_yblock_bw_8_obmc_16_mmx(const uint8_t *obmc, const x86_reg obmc_stride, uint8_t * * block, int b_w, x86_reg b_h,
826                       int src_x, int src_y, x86_reg src_stride, slice_buffer * sb, int add, uint8_t * dst8){
827 snow_inner_add_yblock_mmx_header
828 snow_inner_add_yblock_mmx_start("mm1", "mm5", "3", "0", "0")
829 snow_inner_add_yblock_mmx_accum("2", "8", "0")
830 snow_inner_add_yblock_mmx_accum("1", "128", "0")
831 snow_inner_add_yblock_mmx_accum("0", "136", "0")
832 snow_inner_add_yblock_mmx_mix("0", "0")
833 snow_inner_add_yblock_mmx_end("16")
834 }
835
836 static void inner_add_yblock_bw_16_obmc_32_mmx(const uint8_t *obmc, const x86_reg obmc_stride, uint8_t * * block, int b_w, x86_reg b_h,
837                       int src_x, int src_y, x86_reg src_stride, slice_buffer * sb, int add, uint8_t * dst8){
838 snow_inner_add_yblock_mmx_header
839 snow_inner_add_yblock_mmx_start("mm1", "mm5", "3", "0", "0")
840 snow_inner_add_yblock_mmx_accum("2", "16", "0")
841 snow_inner_add_yblock_mmx_accum("1", "512", "0")
842 snow_inner_add_yblock_mmx_accum("0", "528", "0")
843 snow_inner_add_yblock_mmx_mix("0", "0")
844
845 snow_inner_add_yblock_mmx_start("mm1", "mm5", "3", "8", "8")
846 snow_inner_add_yblock_mmx_accum("2", "24", "8")
847 snow_inner_add_yblock_mmx_accum("1", "520", "8")
848 snow_inner_add_yblock_mmx_accum("0", "536", "8")
849 snow_inner_add_yblock_mmx_mix("16", "8")
850 snow_inner_add_yblock_mmx_end("32")
851 }
852
853 static void ff_snow_inner_add_yblock_sse2(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h,
854                            int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8){
855
856     if (b_w == 16)
857         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);
858     else if (b_w == 8 && obmc_stride == 16) {
859         if (!(b_h & 1))
860             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);
861         else
862             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);
863     } else
864          ff_snow_inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
865 }
866
867 static void ff_snow_inner_add_yblock_mmx(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h,
868                           int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8){
869     if (b_w == 16)
870         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);
871     else if (b_w == 8 && obmc_stride == 16)
872         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);
873     else
874         ff_snow_inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
875 }
876 #endif /* HAVE_6REGS */
877
878 #endif /* HAVE_INLINE_ASM */
879
880 av_cold void ff_dwt_init_x86(SnowDWTContext *c)
881 {
882 #if HAVE_INLINE_ASM
883     int mm_flags = av_get_cpu_flags();
884
885     if (mm_flags & AV_CPU_FLAG_MMX) {
886         if(mm_flags & AV_CPU_FLAG_SSE2 & 0){
887             c->horizontal_compose97i = ff_snow_horizontal_compose97i_sse2;
888 #if HAVE_7REGS
889             c->vertical_compose97i = ff_snow_vertical_compose97i_sse2;
890 #endif
891 #if HAVE_6REGS
892             c->inner_add_yblock = ff_snow_inner_add_yblock_sse2;
893 #endif
894         }
895         else{
896             if (mm_flags & AV_CPU_FLAG_MMXEXT) {
897             c->horizontal_compose97i = ff_snow_horizontal_compose97i_mmx;
898 #if HAVE_7REGS
899             c->vertical_compose97i = ff_snow_vertical_compose97i_mmx;
900 #endif
901             }
902 #if HAVE_6REGS
903             c->inner_add_yblock = ff_snow_inner_add_yblock_mmx;
904 #endif
905         }
906     }
907 #endif /* HAVE_INLINE_ASM */
908 }