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dsputil_init.c
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1 /*
2  * MMX optimized DSP utils
3  * Copyright (c) 2000, 2001 Fabrice Bellard
4  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * MMX optimization by Nick Kurshev <nickols_k@mail.ru>
7  *
8  * This file is part of FFmpeg.
9  *
10  * FFmpeg is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU Lesser General Public
12  * License as published by the Free Software Foundation; either
13  * version 2.1 of the License, or (at your option) any later version.
14  *
15  * FFmpeg is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18  * Lesser General Public License for more details.
19  *
20  * You should have received a copy of the GNU Lesser General Public
21  * License along with FFmpeg; if not, write to the Free Software
22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23  */
24 
25 #include "libavutil/attributes.h"
26 #include "libavutil/cpu.h"
27 #include "libavutil/x86/asm.h"
28 #include "libavutil/x86/cpu.h"
29 #include "libavcodec/dsputil.h"
30 #include "libavcodec/mpegvideo.h"
31 #include "dsputil_x86.h"
32 
33 int ff_sum_abs_dctelem_mmx(int16_t *block);
34 int ff_sum_abs_dctelem_mmxext(int16_t *block);
35 int ff_sum_abs_dctelem_sse2(int16_t *block);
36 int ff_sum_abs_dctelem_ssse3(int16_t *block);
37 int ff_sse8_mmx(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
38  int line_size, int h);
39 int ff_sse16_mmx(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
40  int line_size, int h);
41 int ff_sse16_sse2(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
42  int line_size, int h);
43 int ff_hf_noise8_mmx(uint8_t *pix1, int lsize, int h);
44 int ff_hf_noise16_mmx(uint8_t *pix1, int lsize, int h);
45 
46 #define hadamard_func(cpu) \
47  int ff_hadamard8_diff_ ## cpu(MpegEncContext *s, uint8_t *src1, \
48  uint8_t *src2, int stride, int h); \
49  int ff_hadamard8_diff16_ ## cpu(MpegEncContext *s, uint8_t *src1, \
50  uint8_t *src2, int stride, int h);
51 
52 hadamard_func(mmx)
53 hadamard_func(mmxext)
54 hadamard_func(sse2)
55 hadamard_func(ssse3)
56 
57 #if HAVE_YASM
58 static int nsse16_mmx(MpegEncContext *c, uint8_t *pix1, uint8_t *pix2,
59  int line_size, int h)
60 {
61  int score1, score2;
62 
63  if (c)
64  score1 = c->dsp.sse[0](c, pix1, pix2, line_size, h);
65  else
66  score1 = ff_sse16_mmx(c, pix1, pix2, line_size, h);
67  score2 = ff_hf_noise16_mmx(pix1, line_size, h) + ff_hf_noise8_mmx(pix1+8, line_size, h)
68  - ff_hf_noise16_mmx(pix2, line_size, h) - ff_hf_noise8_mmx(pix2+8, line_size, h);
69 
70  if (c)
71  return score1 + FFABS(score2) * c->avctx->nsse_weight;
72  else
73  return score1 + FFABS(score2) * 8;
74 }
75 
76 static int nsse8_mmx(MpegEncContext *c, uint8_t *pix1, uint8_t *pix2,
77  int line_size, int h)
78 {
79  int score1 = ff_sse8_mmx(c, pix1, pix2, line_size, h);
80  int score2 = ff_hf_noise8_mmx(pix1, line_size, h) -
81  ff_hf_noise8_mmx(pix2, line_size, h);
82 
83  if (c)
84  return score1 + FFABS(score2) * c->avctx->nsse_weight;
85  else
86  return score1 + FFABS(score2) * 8;
87 }
88 
89 #endif /* HAVE_YASM */
90 
91 #if HAVE_INLINE_ASM
92 
93 static int vsad_intra16_mmx(MpegEncContext *v, uint8_t *pix, uint8_t *dummy,
94  int line_size, int h)
95 {
96  int tmp;
97 
98  av_assert2((((int) pix) & 7) == 0);
99  av_assert2((line_size & 7) == 0);
100 
101 #define SUM(in0, in1, out0, out1) \
102  "movq (%0), %%mm2\n" \
103  "movq 8(%0), %%mm3\n" \
104  "add %2,%0\n" \
105  "movq %%mm2, " #out0 "\n" \
106  "movq %%mm3, " #out1 "\n" \
107  "psubusb " #in0 ", %%mm2\n" \
108  "psubusb " #in1 ", %%mm3\n" \
109  "psubusb " #out0 ", " #in0 "\n" \
110  "psubusb " #out1 ", " #in1 "\n" \
111  "por %%mm2, " #in0 "\n" \
112  "por %%mm3, " #in1 "\n" \
113  "movq " #in0 ", %%mm2\n" \
114  "movq " #in1 ", %%mm3\n" \
115  "punpcklbw %%mm7, " #in0 "\n" \
116  "punpcklbw %%mm7, " #in1 "\n" \
117  "punpckhbw %%mm7, %%mm2\n" \
118  "punpckhbw %%mm7, %%mm3\n" \
119  "paddw " #in1 ", " #in0 "\n" \
120  "paddw %%mm3, %%mm2\n" \
121  "paddw %%mm2, " #in0 "\n" \
122  "paddw " #in0 ", %%mm6\n"
123 
124 
125  __asm__ volatile (
126  "movl %3, %%ecx\n"
127  "pxor %%mm6, %%mm6\n"
128  "pxor %%mm7, %%mm7\n"
129  "movq (%0), %%mm0\n"
130  "movq 8(%0), %%mm1\n"
131  "add %2, %0\n"
132  "jmp 2f\n"
133  "1:\n"
134 
135  SUM(%%mm4, %%mm5, %%mm0, %%mm1)
136  "2:\n"
137  SUM(%%mm0, %%mm1, %%mm4, %%mm5)
138 
139  "subl $2, %%ecx\n"
140  "jnz 1b\n"
141 
142  "movq %%mm6, %%mm0\n"
143  "psrlq $32, %%mm6\n"
144  "paddw %%mm6, %%mm0\n"
145  "movq %%mm0, %%mm6\n"
146  "psrlq $16, %%mm0\n"
147  "paddw %%mm6, %%mm0\n"
148  "movd %%mm0, %1\n"
149  : "+r" (pix), "=r" (tmp)
150  : "r" ((x86_reg) line_size), "m" (h)
151  : "%ecx");
152 
153  return tmp & 0xFFFF;
154 }
155 #undef SUM
156 
157 static int vsad_intra16_mmxext(MpegEncContext *v, uint8_t *pix, uint8_t *dummy,
158  int line_size, int h)
159 {
160  int tmp;
161 
162  av_assert2((((int) pix) & 7) == 0);
163  av_assert2((line_size & 7) == 0);
164 
165 #define SUM(in0, in1, out0, out1) \
166  "movq (%0), " #out0 "\n" \
167  "movq 8(%0), " #out1 "\n" \
168  "add %2, %0\n" \
169  "psadbw " #out0 ", " #in0 "\n" \
170  "psadbw " #out1 ", " #in1 "\n" \
171  "paddw " #in1 ", " #in0 "\n" \
172  "paddw " #in0 ", %%mm6\n"
173 
174  __asm__ volatile (
175  "movl %3, %%ecx\n"
176  "pxor %%mm6, %%mm6\n"
177  "pxor %%mm7, %%mm7\n"
178  "movq (%0), %%mm0\n"
179  "movq 8(%0), %%mm1\n"
180  "add %2, %0\n"
181  "jmp 2f\n"
182  "1:\n"
183 
184  SUM(%%mm4, %%mm5, %%mm0, %%mm1)
185  "2:\n"
186  SUM(%%mm0, %%mm1, %%mm4, %%mm5)
187 
188  "subl $2, %%ecx\n"
189  "jnz 1b\n"
190 
191  "movd %%mm6, %1\n"
192  : "+r" (pix), "=r" (tmp)
193  : "r" ((x86_reg) line_size), "m" (h)
194  : "%ecx");
195 
196  return tmp;
197 }
198 #undef SUM
199 
200 static int vsad16_mmx(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
201  int line_size, int h)
202 {
203  int tmp;
204 
205  av_assert2((((int) pix1) & 7) == 0);
206  av_assert2((((int) pix2) & 7) == 0);
207  av_assert2((line_size & 7) == 0);
208 
209 #define SUM(in0, in1, out0, out1) \
210  "movq (%0), %%mm2\n" \
211  "movq (%1), " #out0 "\n" \
212  "movq 8(%0), %%mm3\n" \
213  "movq 8(%1), " #out1 "\n" \
214  "add %3, %0\n" \
215  "add %3, %1\n" \
216  "psubb " #out0 ", %%mm2\n" \
217  "psubb " #out1 ", %%mm3\n" \
218  "pxor %%mm7, %%mm2\n" \
219  "pxor %%mm7, %%mm3\n" \
220  "movq %%mm2, " #out0 "\n" \
221  "movq %%mm3, " #out1 "\n" \
222  "psubusb " #in0 ", %%mm2\n" \
223  "psubusb " #in1 ", %%mm3\n" \
224  "psubusb " #out0 ", " #in0 "\n" \
225  "psubusb " #out1 ", " #in1 "\n" \
226  "por %%mm2, " #in0 "\n" \
227  "por %%mm3, " #in1 "\n" \
228  "movq " #in0 ", %%mm2\n" \
229  "movq " #in1 ", %%mm3\n" \
230  "punpcklbw %%mm7, " #in0 "\n" \
231  "punpcklbw %%mm7, " #in1 "\n" \
232  "punpckhbw %%mm7, %%mm2\n" \
233  "punpckhbw %%mm7, %%mm3\n" \
234  "paddw " #in1 ", " #in0 "\n" \
235  "paddw %%mm3, %%mm2\n" \
236  "paddw %%mm2, " #in0 "\n" \
237  "paddw " #in0 ", %%mm6\n"
238 
239 
240  __asm__ volatile (
241  "movl %4, %%ecx\n"
242  "pxor %%mm6, %%mm6\n"
243  "pcmpeqw %%mm7, %%mm7\n"
244  "psllw $15, %%mm7\n"
245  "packsswb %%mm7, %%mm7\n"
246  "movq (%0), %%mm0\n"
247  "movq (%1), %%mm2\n"
248  "movq 8(%0), %%mm1\n"
249  "movq 8(%1), %%mm3\n"
250  "add %3, %0\n"
251  "add %3, %1\n"
252  "psubb %%mm2, %%mm0\n"
253  "psubb %%mm3, %%mm1\n"
254  "pxor %%mm7, %%mm0\n"
255  "pxor %%mm7, %%mm1\n"
256  "jmp 2f\n"
257  "1:\n"
258 
259  SUM(%%mm4, %%mm5, %%mm0, %%mm1)
260  "2:\n"
261  SUM(%%mm0, %%mm1, %%mm4, %%mm5)
262 
263  "subl $2, %%ecx\n"
264  "jnz 1b\n"
265 
266  "movq %%mm6, %%mm0\n"
267  "psrlq $32, %%mm6\n"
268  "paddw %%mm6, %%mm0\n"
269  "movq %%mm0, %%mm6\n"
270  "psrlq $16, %%mm0\n"
271  "paddw %%mm6, %%mm0\n"
272  "movd %%mm0, %2\n"
273  : "+r" (pix1), "+r" (pix2), "=r" (tmp)
274  : "r" ((x86_reg) line_size), "m" (h)
275  : "%ecx");
276 
277  return tmp & 0x7FFF;
278 }
279 #undef SUM
280 
281 static int vsad16_mmxext(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
282  int line_size, int h)
283 {
284  int tmp;
285 
286  av_assert2((((int) pix1) & 7) == 0);
287  av_assert2((((int) pix2) & 7) == 0);
288  av_assert2((line_size & 7) == 0);
289 
290 #define SUM(in0, in1, out0, out1) \
291  "movq (%0), " #out0 "\n" \
292  "movq (%1), %%mm2\n" \
293  "movq 8(%0), " #out1 "\n" \
294  "movq 8(%1), %%mm3\n" \
295  "add %3, %0\n" \
296  "add %3, %1\n" \
297  "psubb %%mm2, " #out0 "\n" \
298  "psubb %%mm3, " #out1 "\n" \
299  "pxor %%mm7, " #out0 "\n" \
300  "pxor %%mm7, " #out1 "\n" \
301  "psadbw " #out0 ", " #in0 "\n" \
302  "psadbw " #out1 ", " #in1 "\n" \
303  "paddw " #in1 ", " #in0 "\n" \
304  "paddw " #in0 ", %%mm6\n "
305 
306  __asm__ volatile (
307  "movl %4, %%ecx\n"
308  "pxor %%mm6, %%mm6\n"
309  "pcmpeqw %%mm7, %%mm7\n"
310  "psllw $15, %%mm7\n"
311  "packsswb %%mm7, %%mm7\n"
312  "movq (%0), %%mm0\n"
313  "movq (%1), %%mm2\n"
314  "movq 8(%0), %%mm1\n"
315  "movq 8(%1), %%mm3\n"
316  "add %3, %0\n"
317  "add %3, %1\n"
318  "psubb %%mm2, %%mm0\n"
319  "psubb %%mm3, %%mm1\n"
320  "pxor %%mm7, %%mm0\n"
321  "pxor %%mm7, %%mm1\n"
322  "jmp 2f\n"
323  "1:\n"
324 
325  SUM(%%mm4, %%mm5, %%mm0, %%mm1)
326  "2:\n"
327  SUM(%%mm0, %%mm1, %%mm4, %%mm5)
328 
329  "subl $2, %%ecx\n"
330  "jnz 1b\n"
331 
332  "movd %%mm6, %2\n"
333  : "+r" (pix1), "+r" (pix2), "=r" (tmp)
334  : "r" ((x86_reg) line_size), "m" (h)
335  : "%ecx");
336 
337  return tmp;
338 }
339 #undef SUM
340 
341 
342 #endif /* HAVE_INLINE_ASM */
343 
344 av_cold void ff_dsputil_init_x86(DSPContext *c, AVCodecContext *avctx)
345 {
346  int cpu_flags = av_get_cpu_flags();
347 
348 #if HAVE_INLINE_ASM
349  if (INLINE_MMX(cpu_flags)) {
350  c->vsad[4] = vsad_intra16_mmx;
351 
352  if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
353  c->vsad[0] = vsad16_mmx;
354  }
355  }
356 
357  if (INLINE_MMXEXT(cpu_flags)) {
358  c->vsad[4] = vsad_intra16_mmxext;
359 
360  if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
361  c->vsad[0] = vsad16_mmxext;
362  }
363  }
364 #endif /* HAVE_INLINE_ASM */
365 
366  if (EXTERNAL_MMX(cpu_flags)) {
367  c->hadamard8_diff[0] = ff_hadamard8_diff16_mmx;
368  c->hadamard8_diff[1] = ff_hadamard8_diff_mmx;
369  c->sum_abs_dctelem = ff_sum_abs_dctelem_mmx;
370  c->sse[0] = ff_sse16_mmx;
371  c->sse[1] = ff_sse8_mmx;
372 #if HAVE_YASM
373  c->nsse[0] = nsse16_mmx;
374  c->nsse[1] = nsse8_mmx;
375 #endif
376  }
377 
378  if (EXTERNAL_MMXEXT(cpu_flags)) {
379  c->hadamard8_diff[0] = ff_hadamard8_diff16_mmxext;
380  c->hadamard8_diff[1] = ff_hadamard8_diff_mmxext;
381  c->sum_abs_dctelem = ff_sum_abs_dctelem_mmxext;
382  }
383 
384  if (EXTERNAL_SSE2(cpu_flags)) {
385  c->sse[0] = ff_sse16_sse2;
386  c->sum_abs_dctelem = ff_sum_abs_dctelem_sse2;
387 
388 #if HAVE_ALIGNED_STACK
389  c->hadamard8_diff[0] = ff_hadamard8_diff16_sse2;
390  c->hadamard8_diff[1] = ff_hadamard8_diff_sse2;
391 #endif
392  }
393 
394  if (EXTERNAL_SSSE3(cpu_flags)) {
395  c->sum_abs_dctelem = ff_sum_abs_dctelem_ssse3;
396 #if HAVE_ALIGNED_STACK
397  c->hadamard8_diff[0] = ff_hadamard8_diff16_ssse3;
398  c->hadamard8_diff[1] = ff_hadamard8_diff_ssse3;
399 #endif
400  }
401 
402  ff_dsputil_init_pix_mmx(c, avctx);
403 }
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