mpegvideo.c
Go to the documentation of this file.
1 /*
2  * Optimized for ia32 CPUs by Nick Kurshev <nickols_k@mail.ru>
3  * h263, mpeg1, mpeg2 dequantizer & draw_edges by Michael Niedermayer <michaelni@gmx.at>
4  *
5  * This file is part of Libav.
6  *
7  * Libav 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  * Libav 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 Libav; 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/dsputil.h"
26 #include "libavcodec/mpegvideo.h"
27 #include "dsputil_mmx.h"
28 
29 #if HAVE_INLINE_ASM
30 
31 static void dct_unquantize_h263_intra_mmx(MpegEncContext *s,
32  DCTELEM *block, int n, int qscale)
33 {
34  x86_reg level, qmul, qadd, nCoeffs;
35 
36  qmul = qscale << 1;
37 
38  assert(s->block_last_index[n]>=0 || s->h263_aic);
39 
40  if (!s->h263_aic) {
41  if (n < 4)
42  level = block[0] * s->y_dc_scale;
43  else
44  level = block[0] * s->c_dc_scale;
45  qadd = (qscale - 1) | 1;
46  }else{
47  qadd = 0;
48  level= block[0];
49  }
50  if(s->ac_pred)
51  nCoeffs=63;
52  else
53  nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
54 
55 __asm__ volatile(
56  "movd %1, %%mm6 \n\t" //qmul
57  "packssdw %%mm6, %%mm6 \n\t"
58  "packssdw %%mm6, %%mm6 \n\t"
59  "movd %2, %%mm5 \n\t" //qadd
60  "pxor %%mm7, %%mm7 \n\t"
61  "packssdw %%mm5, %%mm5 \n\t"
62  "packssdw %%mm5, %%mm5 \n\t"
63  "psubw %%mm5, %%mm7 \n\t"
64  "pxor %%mm4, %%mm4 \n\t"
65  ".p2align 4 \n\t"
66  "1: \n\t"
67  "movq (%0, %3), %%mm0 \n\t"
68  "movq 8(%0, %3), %%mm1 \n\t"
69 
70  "pmullw %%mm6, %%mm0 \n\t"
71  "pmullw %%mm6, %%mm1 \n\t"
72 
73  "movq (%0, %3), %%mm2 \n\t"
74  "movq 8(%0, %3), %%mm3 \n\t"
75 
76  "pcmpgtw %%mm4, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
77  "pcmpgtw %%mm4, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
78 
79  "pxor %%mm2, %%mm0 \n\t"
80  "pxor %%mm3, %%mm1 \n\t"
81 
82  "paddw %%mm7, %%mm0 \n\t"
83  "paddw %%mm7, %%mm1 \n\t"
84 
85  "pxor %%mm0, %%mm2 \n\t"
86  "pxor %%mm1, %%mm3 \n\t"
87 
88  "pcmpeqw %%mm7, %%mm0 \n\t" // block[i] == 0 ? -1 : 0
89  "pcmpeqw %%mm7, %%mm1 \n\t" // block[i] == 0 ? -1 : 0
90 
91  "pandn %%mm2, %%mm0 \n\t"
92  "pandn %%mm3, %%mm1 \n\t"
93 
94  "movq %%mm0, (%0, %3) \n\t"
95  "movq %%mm1, 8(%0, %3) \n\t"
96 
97  "add $16, %3 \n\t"
98  "jng 1b \n\t"
99  ::"r" (block+nCoeffs), "rm"(qmul), "rm" (qadd), "r" (2*(-nCoeffs))
100  : "memory"
101  );
102  block[0]= level;
103 }
104 
105 
106 static void dct_unquantize_h263_inter_mmx(MpegEncContext *s,
107  DCTELEM *block, int n, int qscale)
108 {
109  x86_reg qmul, qadd, nCoeffs;
110 
111  qmul = qscale << 1;
112  qadd = (qscale - 1) | 1;
113 
114  assert(s->block_last_index[n]>=0 || s->h263_aic);
115 
116  nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
117 
118 __asm__ volatile(
119  "movd %1, %%mm6 \n\t" //qmul
120  "packssdw %%mm6, %%mm6 \n\t"
121  "packssdw %%mm6, %%mm6 \n\t"
122  "movd %2, %%mm5 \n\t" //qadd
123  "pxor %%mm7, %%mm7 \n\t"
124  "packssdw %%mm5, %%mm5 \n\t"
125  "packssdw %%mm5, %%mm5 \n\t"
126  "psubw %%mm5, %%mm7 \n\t"
127  "pxor %%mm4, %%mm4 \n\t"
128  ".p2align 4 \n\t"
129  "1: \n\t"
130  "movq (%0, %3), %%mm0 \n\t"
131  "movq 8(%0, %3), %%mm1 \n\t"
132 
133  "pmullw %%mm6, %%mm0 \n\t"
134  "pmullw %%mm6, %%mm1 \n\t"
135 
136  "movq (%0, %3), %%mm2 \n\t"
137  "movq 8(%0, %3), %%mm3 \n\t"
138 
139  "pcmpgtw %%mm4, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
140  "pcmpgtw %%mm4, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
141 
142  "pxor %%mm2, %%mm0 \n\t"
143  "pxor %%mm3, %%mm1 \n\t"
144 
145  "paddw %%mm7, %%mm0 \n\t"
146  "paddw %%mm7, %%mm1 \n\t"
147 
148  "pxor %%mm0, %%mm2 \n\t"
149  "pxor %%mm1, %%mm3 \n\t"
150 
151  "pcmpeqw %%mm7, %%mm0 \n\t" // block[i] == 0 ? -1 : 0
152  "pcmpeqw %%mm7, %%mm1 \n\t" // block[i] == 0 ? -1 : 0
153 
154  "pandn %%mm2, %%mm0 \n\t"
155  "pandn %%mm3, %%mm1 \n\t"
156 
157  "movq %%mm0, (%0, %3) \n\t"
158  "movq %%mm1, 8(%0, %3) \n\t"
159 
160  "add $16, %3 \n\t"
161  "jng 1b \n\t"
162  ::"r" (block+nCoeffs), "rm"(qmul), "rm" (qadd), "r" (2*(-nCoeffs))
163  : "memory"
164  );
165 }
166 
167 
168 /*
169  NK:
170  Note: looking at PARANOID:
171  "enable all paranoid tests for rounding, overflows, etc..."
172 
173 #ifdef PARANOID
174  if (level < -2048 || level > 2047)
175  fprintf(stderr, "unquant error %d %d\n", i, level);
176 #endif
177  We can suppose that result of two multiplications can't be greater than 0xFFFF
178  i.e. is 16-bit, so we use here only PMULLW instruction and can avoid
179  a complex multiplication.
180 =====================================================
181  Full formula for multiplication of 2 integer numbers
182  which are represent as high:low words:
183  input: value1 = high1:low1
184  value2 = high2:low2
185  output: value3 = value1*value2
186  value3=high3:low3 (on overflow: modulus 2^32 wrap-around)
187  this mean that for 0x123456 * 0x123456 correct result is 0x766cb0ce4
188  but this algorithm will compute only 0x66cb0ce4
189  this limited by 16-bit size of operands
190  ---------------------------------
191  tlow1 = high1*low2
192  tlow2 = high2*low1
193  tlow1 = tlow1 + tlow2
194  high3:low3 = low1*low2
195  high3 += tlow1
196 */
197 static void dct_unquantize_mpeg1_intra_mmx(MpegEncContext *s,
198  DCTELEM *block, int n, int qscale)
199 {
200  x86_reg nCoeffs;
201  const uint16_t *quant_matrix;
202  int block0;
203 
204  assert(s->block_last_index[n]>=0);
205 
206  nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]+1;
207 
208  if (n < 4)
209  block0 = block[0] * s->y_dc_scale;
210  else
211  block0 = block[0] * s->c_dc_scale;
212  /* XXX: only mpeg1 */
213  quant_matrix = s->intra_matrix;
214 __asm__ volatile(
215  "pcmpeqw %%mm7, %%mm7 \n\t"
216  "psrlw $15, %%mm7 \n\t"
217  "movd %2, %%mm6 \n\t"
218  "packssdw %%mm6, %%mm6 \n\t"
219  "packssdw %%mm6, %%mm6 \n\t"
220  "mov %3, %%"REG_a" \n\t"
221  ".p2align 4 \n\t"
222  "1: \n\t"
223  "movq (%0, %%"REG_a"), %%mm0 \n\t"
224  "movq 8(%0, %%"REG_a"), %%mm1 \n\t"
225  "movq (%1, %%"REG_a"), %%mm4 \n\t"
226  "movq 8(%1, %%"REG_a"), %%mm5 \n\t"
227  "pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
228  "pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
229  "pxor %%mm2, %%mm2 \n\t"
230  "pxor %%mm3, %%mm3 \n\t"
231  "pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
232  "pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
233  "pxor %%mm2, %%mm0 \n\t"
234  "pxor %%mm3, %%mm1 \n\t"
235  "psubw %%mm2, %%mm0 \n\t" // abs(block[i])
236  "psubw %%mm3, %%mm1 \n\t" // abs(block[i])
237  "pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*q
238  "pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*q
239  "pxor %%mm4, %%mm4 \n\t"
240  "pxor %%mm5, %%mm5 \n\t" // FIXME slow
241  "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
242  "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
243  "psraw $3, %%mm0 \n\t"
244  "psraw $3, %%mm1 \n\t"
245  "psubw %%mm7, %%mm0 \n\t"
246  "psubw %%mm7, %%mm1 \n\t"
247  "por %%mm7, %%mm0 \n\t"
248  "por %%mm7, %%mm1 \n\t"
249  "pxor %%mm2, %%mm0 \n\t"
250  "pxor %%mm3, %%mm1 \n\t"
251  "psubw %%mm2, %%mm0 \n\t"
252  "psubw %%mm3, %%mm1 \n\t"
253  "pandn %%mm0, %%mm4 \n\t"
254  "pandn %%mm1, %%mm5 \n\t"
255  "movq %%mm4, (%0, %%"REG_a") \n\t"
256  "movq %%mm5, 8(%0, %%"REG_a") \n\t"
257 
258  "add $16, %%"REG_a" \n\t"
259  "js 1b \n\t"
260  ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
261  : "%"REG_a, "memory"
262  );
263  block[0]= block0;
264 }
265 
266 static void dct_unquantize_mpeg1_inter_mmx(MpegEncContext *s,
267  DCTELEM *block, int n, int qscale)
268 {
269  x86_reg nCoeffs;
270  const uint16_t *quant_matrix;
271 
272  assert(s->block_last_index[n]>=0);
273 
274  nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]+1;
275 
276  quant_matrix = s->inter_matrix;
277 __asm__ volatile(
278  "pcmpeqw %%mm7, %%mm7 \n\t"
279  "psrlw $15, %%mm7 \n\t"
280  "movd %2, %%mm6 \n\t"
281  "packssdw %%mm6, %%mm6 \n\t"
282  "packssdw %%mm6, %%mm6 \n\t"
283  "mov %3, %%"REG_a" \n\t"
284  ".p2align 4 \n\t"
285  "1: \n\t"
286  "movq (%0, %%"REG_a"), %%mm0 \n\t"
287  "movq 8(%0, %%"REG_a"), %%mm1 \n\t"
288  "movq (%1, %%"REG_a"), %%mm4 \n\t"
289  "movq 8(%1, %%"REG_a"), %%mm5 \n\t"
290  "pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
291  "pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
292  "pxor %%mm2, %%mm2 \n\t"
293  "pxor %%mm3, %%mm3 \n\t"
294  "pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
295  "pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
296  "pxor %%mm2, %%mm0 \n\t"
297  "pxor %%mm3, %%mm1 \n\t"
298  "psubw %%mm2, %%mm0 \n\t" // abs(block[i])
299  "psubw %%mm3, %%mm1 \n\t" // abs(block[i])
300  "paddw %%mm0, %%mm0 \n\t" // abs(block[i])*2
301  "paddw %%mm1, %%mm1 \n\t" // abs(block[i])*2
302  "paddw %%mm7, %%mm0 \n\t" // abs(block[i])*2 + 1
303  "paddw %%mm7, %%mm1 \n\t" // abs(block[i])*2 + 1
304  "pmullw %%mm4, %%mm0 \n\t" // (abs(block[i])*2 + 1)*q
305  "pmullw %%mm5, %%mm1 \n\t" // (abs(block[i])*2 + 1)*q
306  "pxor %%mm4, %%mm4 \n\t"
307  "pxor %%mm5, %%mm5 \n\t" // FIXME slow
308  "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
309  "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
310  "psraw $4, %%mm0 \n\t"
311  "psraw $4, %%mm1 \n\t"
312  "psubw %%mm7, %%mm0 \n\t"
313  "psubw %%mm7, %%mm1 \n\t"
314  "por %%mm7, %%mm0 \n\t"
315  "por %%mm7, %%mm1 \n\t"
316  "pxor %%mm2, %%mm0 \n\t"
317  "pxor %%mm3, %%mm1 \n\t"
318  "psubw %%mm2, %%mm0 \n\t"
319  "psubw %%mm3, %%mm1 \n\t"
320  "pandn %%mm0, %%mm4 \n\t"
321  "pandn %%mm1, %%mm5 \n\t"
322  "movq %%mm4, (%0, %%"REG_a") \n\t"
323  "movq %%mm5, 8(%0, %%"REG_a") \n\t"
324 
325  "add $16, %%"REG_a" \n\t"
326  "js 1b \n\t"
327  ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
328  : "%"REG_a, "memory"
329  );
330 }
331 
332 static void dct_unquantize_mpeg2_intra_mmx(MpegEncContext *s,
333  DCTELEM *block, int n, int qscale)
334 {
335  x86_reg nCoeffs;
336  const uint16_t *quant_matrix;
337  int block0;
338 
339  assert(s->block_last_index[n]>=0);
340 
341  if(s->alternate_scan) nCoeffs= 63; //FIXME
342  else nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
343 
344  if (n < 4)
345  block0 = block[0] * s->y_dc_scale;
346  else
347  block0 = block[0] * s->c_dc_scale;
348  quant_matrix = s->intra_matrix;
349 __asm__ volatile(
350  "pcmpeqw %%mm7, %%mm7 \n\t"
351  "psrlw $15, %%mm7 \n\t"
352  "movd %2, %%mm6 \n\t"
353  "packssdw %%mm6, %%mm6 \n\t"
354  "packssdw %%mm6, %%mm6 \n\t"
355  "mov %3, %%"REG_a" \n\t"
356  ".p2align 4 \n\t"
357  "1: \n\t"
358  "movq (%0, %%"REG_a"), %%mm0 \n\t"
359  "movq 8(%0, %%"REG_a"), %%mm1 \n\t"
360  "movq (%1, %%"REG_a"), %%mm4 \n\t"
361  "movq 8(%1, %%"REG_a"), %%mm5 \n\t"
362  "pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
363  "pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
364  "pxor %%mm2, %%mm2 \n\t"
365  "pxor %%mm3, %%mm3 \n\t"
366  "pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
367  "pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
368  "pxor %%mm2, %%mm0 \n\t"
369  "pxor %%mm3, %%mm1 \n\t"
370  "psubw %%mm2, %%mm0 \n\t" // abs(block[i])
371  "psubw %%mm3, %%mm1 \n\t" // abs(block[i])
372  "pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*q
373  "pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*q
374  "pxor %%mm4, %%mm4 \n\t"
375  "pxor %%mm5, %%mm5 \n\t" // FIXME slow
376  "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
377  "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
378  "psraw $3, %%mm0 \n\t"
379  "psraw $3, %%mm1 \n\t"
380  "pxor %%mm2, %%mm0 \n\t"
381  "pxor %%mm3, %%mm1 \n\t"
382  "psubw %%mm2, %%mm0 \n\t"
383  "psubw %%mm3, %%mm1 \n\t"
384  "pandn %%mm0, %%mm4 \n\t"
385  "pandn %%mm1, %%mm5 \n\t"
386  "movq %%mm4, (%0, %%"REG_a") \n\t"
387  "movq %%mm5, 8(%0, %%"REG_a") \n\t"
388 
389  "add $16, %%"REG_a" \n\t"
390  "jng 1b \n\t"
391  ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
392  : "%"REG_a, "memory"
393  );
394  block[0]= block0;
395  //Note, we do not do mismatch control for intra as errors cannot accumulate
396 }
397 
398 static void dct_unquantize_mpeg2_inter_mmx(MpegEncContext *s,
399  DCTELEM *block, int n, int qscale)
400 {
401  x86_reg nCoeffs;
402  const uint16_t *quant_matrix;
403 
404  assert(s->block_last_index[n]>=0);
405 
406  if(s->alternate_scan) nCoeffs= 63; //FIXME
407  else nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
408 
409  quant_matrix = s->inter_matrix;
410 __asm__ volatile(
411  "pcmpeqw %%mm7, %%mm7 \n\t"
412  "psrlq $48, %%mm7 \n\t"
413  "movd %2, %%mm6 \n\t"
414  "packssdw %%mm6, %%mm6 \n\t"
415  "packssdw %%mm6, %%mm6 \n\t"
416  "mov %3, %%"REG_a" \n\t"
417  ".p2align 4 \n\t"
418  "1: \n\t"
419  "movq (%0, %%"REG_a"), %%mm0 \n\t"
420  "movq 8(%0, %%"REG_a"), %%mm1 \n\t"
421  "movq (%1, %%"REG_a"), %%mm4 \n\t"
422  "movq 8(%1, %%"REG_a"), %%mm5 \n\t"
423  "pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
424  "pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
425  "pxor %%mm2, %%mm2 \n\t"
426  "pxor %%mm3, %%mm3 \n\t"
427  "pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
428  "pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
429  "pxor %%mm2, %%mm0 \n\t"
430  "pxor %%mm3, %%mm1 \n\t"
431  "psubw %%mm2, %%mm0 \n\t" // abs(block[i])
432  "psubw %%mm3, %%mm1 \n\t" // abs(block[i])
433  "paddw %%mm0, %%mm0 \n\t" // abs(block[i])*2
434  "paddw %%mm1, %%mm1 \n\t" // abs(block[i])*2
435  "pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*2*q
436  "pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*2*q
437  "paddw %%mm4, %%mm0 \n\t" // (abs(block[i])*2 + 1)*q
438  "paddw %%mm5, %%mm1 \n\t" // (abs(block[i])*2 + 1)*q
439  "pxor %%mm4, %%mm4 \n\t"
440  "pxor %%mm5, %%mm5 \n\t" // FIXME slow
441  "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
442  "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
443  "psrlw $4, %%mm0 \n\t"
444  "psrlw $4, %%mm1 \n\t"
445  "pxor %%mm2, %%mm0 \n\t"
446  "pxor %%mm3, %%mm1 \n\t"
447  "psubw %%mm2, %%mm0 \n\t"
448  "psubw %%mm3, %%mm1 \n\t"
449  "pandn %%mm0, %%mm4 \n\t"
450  "pandn %%mm1, %%mm5 \n\t"
451  "pxor %%mm4, %%mm7 \n\t"
452  "pxor %%mm5, %%mm7 \n\t"
453  "movq %%mm4, (%0, %%"REG_a") \n\t"
454  "movq %%mm5, 8(%0, %%"REG_a") \n\t"
455 
456  "add $16, %%"REG_a" \n\t"
457  "jng 1b \n\t"
458  "movd 124(%0, %3), %%mm0 \n\t"
459  "movq %%mm7, %%mm6 \n\t"
460  "psrlq $32, %%mm7 \n\t"
461  "pxor %%mm6, %%mm7 \n\t"
462  "movq %%mm7, %%mm6 \n\t"
463  "psrlq $16, %%mm7 \n\t"
464  "pxor %%mm6, %%mm7 \n\t"
465  "pslld $31, %%mm7 \n\t"
466  "psrlq $15, %%mm7 \n\t"
467  "pxor %%mm7, %%mm0 \n\t"
468  "movd %%mm0, 124(%0, %3) \n\t"
469 
470  ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "r" (-2*nCoeffs)
471  : "%"REG_a, "memory"
472  );
473 }
474 
475 static void denoise_dct_mmx(MpegEncContext *s, DCTELEM *block){
476  const int intra= s->mb_intra;
477  int *sum= s->dct_error_sum[intra];
478  uint16_t *offset= s->dct_offset[intra];
479 
480  s->dct_count[intra]++;
481 
482  __asm__ volatile(
483  "pxor %%mm7, %%mm7 \n\t"
484  "1: \n\t"
485  "pxor %%mm0, %%mm0 \n\t"
486  "pxor %%mm1, %%mm1 \n\t"
487  "movq (%0), %%mm2 \n\t"
488  "movq 8(%0), %%mm3 \n\t"
489  "pcmpgtw %%mm2, %%mm0 \n\t"
490  "pcmpgtw %%mm3, %%mm1 \n\t"
491  "pxor %%mm0, %%mm2 \n\t"
492  "pxor %%mm1, %%mm3 \n\t"
493  "psubw %%mm0, %%mm2 \n\t"
494  "psubw %%mm1, %%mm3 \n\t"
495  "movq %%mm2, %%mm4 \n\t"
496  "movq %%mm3, %%mm5 \n\t"
497  "psubusw (%2), %%mm2 \n\t"
498  "psubusw 8(%2), %%mm3 \n\t"
499  "pxor %%mm0, %%mm2 \n\t"
500  "pxor %%mm1, %%mm3 \n\t"
501  "psubw %%mm0, %%mm2 \n\t"
502  "psubw %%mm1, %%mm3 \n\t"
503  "movq %%mm2, (%0) \n\t"
504  "movq %%mm3, 8(%0) \n\t"
505  "movq %%mm4, %%mm2 \n\t"
506  "movq %%mm5, %%mm3 \n\t"
507  "punpcklwd %%mm7, %%mm4 \n\t"
508  "punpckhwd %%mm7, %%mm2 \n\t"
509  "punpcklwd %%mm7, %%mm5 \n\t"
510  "punpckhwd %%mm7, %%mm3 \n\t"
511  "paddd (%1), %%mm4 \n\t"
512  "paddd 8(%1), %%mm2 \n\t"
513  "paddd 16(%1), %%mm5 \n\t"
514  "paddd 24(%1), %%mm3 \n\t"
515  "movq %%mm4, (%1) \n\t"
516  "movq %%mm2, 8(%1) \n\t"
517  "movq %%mm5, 16(%1) \n\t"
518  "movq %%mm3, 24(%1) \n\t"
519  "add $16, %0 \n\t"
520  "add $32, %1 \n\t"
521  "add $16, %2 \n\t"
522  "cmp %3, %0 \n\t"
523  " jb 1b \n\t"
524  : "+r" (block), "+r" (sum), "+r" (offset)
525  : "r"(block+64)
526  );
527 }
528 
529 static void denoise_dct_sse2(MpegEncContext *s, DCTELEM *block){
530  const int intra= s->mb_intra;
531  int *sum= s->dct_error_sum[intra];
532  uint16_t *offset= s->dct_offset[intra];
533 
534  s->dct_count[intra]++;
535 
536  __asm__ volatile(
537  "pxor %%xmm7, %%xmm7 \n\t"
538  "1: \n\t"
539  "pxor %%xmm0, %%xmm0 \n\t"
540  "pxor %%xmm1, %%xmm1 \n\t"
541  "movdqa (%0), %%xmm2 \n\t"
542  "movdqa 16(%0), %%xmm3 \n\t"
543  "pcmpgtw %%xmm2, %%xmm0 \n\t"
544  "pcmpgtw %%xmm3, %%xmm1 \n\t"
545  "pxor %%xmm0, %%xmm2 \n\t"
546  "pxor %%xmm1, %%xmm3 \n\t"
547  "psubw %%xmm0, %%xmm2 \n\t"
548  "psubw %%xmm1, %%xmm3 \n\t"
549  "movdqa %%xmm2, %%xmm4 \n\t"
550  "movdqa %%xmm3, %%xmm5 \n\t"
551  "psubusw (%2), %%xmm2 \n\t"
552  "psubusw 16(%2), %%xmm3 \n\t"
553  "pxor %%xmm0, %%xmm2 \n\t"
554  "pxor %%xmm1, %%xmm3 \n\t"
555  "psubw %%xmm0, %%xmm2 \n\t"
556  "psubw %%xmm1, %%xmm3 \n\t"
557  "movdqa %%xmm2, (%0) \n\t"
558  "movdqa %%xmm3, 16(%0) \n\t"
559  "movdqa %%xmm4, %%xmm6 \n\t"
560  "movdqa %%xmm5, %%xmm0 \n\t"
561  "punpcklwd %%xmm7, %%xmm4 \n\t"
562  "punpckhwd %%xmm7, %%xmm6 \n\t"
563  "punpcklwd %%xmm7, %%xmm5 \n\t"
564  "punpckhwd %%xmm7, %%xmm0 \n\t"
565  "paddd (%1), %%xmm4 \n\t"
566  "paddd 16(%1), %%xmm6 \n\t"
567  "paddd 32(%1), %%xmm5 \n\t"
568  "paddd 48(%1), %%xmm0 \n\t"
569  "movdqa %%xmm4, (%1) \n\t"
570  "movdqa %%xmm6, 16(%1) \n\t"
571  "movdqa %%xmm5, 32(%1) \n\t"
572  "movdqa %%xmm0, 48(%1) \n\t"
573  "add $32, %0 \n\t"
574  "add $64, %1 \n\t"
575  "add $32, %2 \n\t"
576  "cmp %3, %0 \n\t"
577  " jb 1b \n\t"
578  : "+r" (block), "+r" (sum), "+r" (offset)
579  : "r"(block+64)
580  XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3",
581  "%xmm4", "%xmm5", "%xmm6", "%xmm7")
582  );
583 }
584 
585 #endif /* HAVE_INLINE_ASM */
586 
588 {
589 #if HAVE_INLINE_ASM
590  int mm_flags = av_get_cpu_flags();
591 
592  if (mm_flags & AV_CPU_FLAG_MMX) {
593  s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_mmx;
594  s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_mmx;
595  s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_mmx;
596  s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_mmx;
597  if(!(s->flags & CODEC_FLAG_BITEXACT))
598  s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_mmx;
599  s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_mmx;
600 
601  if (mm_flags & AV_CPU_FLAG_SSE2) {
602  s->denoise_dct= denoise_dct_sse2;
603  } else {
604  s->denoise_dct= denoise_dct_mmx;
605  }
606  }
607 #endif /* HAVE_INLINE_ASM */
608 }
void(* dct_unquantize_mpeg2_inter)(struct MpegEncContext *s, DCTELEM *block, int n, int qscale)
Definition: mpegvideo.h:676
void(* dct_unquantize_h263_inter)(struct MpegEncContext *s, DCTELEM *block, int n, int qscale)
Definition: mpegvideo.h:680
void(* dct_unquantize_mpeg2_intra)(struct MpegEncContext *s, DCTELEM *block, int n, int qscale)
Definition: mpegvideo.h:674
uint8_t raster_end[64]
Definition: dsputil.h:184
mpegvideo header.
int h263_aic
Advanded INTRA Coding (AIC)
Definition: mpegvideo.h:263
uint16_t(* dct_offset)[64]
Definition: mpegvideo.h:470
void(* dct_unquantize_mpeg1_intra)(struct MpegEncContext *s, DCTELEM *block, int n, int qscale)
Definition: mpegvideo.h:670
void(* dct_unquantize_mpeg1_inter)(struct MpegEncContext *s, DCTELEM *block, int n, int qscale)
Definition: mpegvideo.h:672
static DCTELEM block[64]
Definition: dct-test.c:169
int alternate_scan
Definition: mpegvideo.h:637
int block_last_index[12]
last non zero coefficient in block
Definition: mpegvideo.h:262
uint16_t inter_matrix[64]
Definition: mpegvideo.h:443
external API header
void(* denoise_dct)(struct MpegEncContext *s, DCTELEM *block)
Definition: mpegvideo.h:692
ScanTable intra_scantable
Definition: mpegvideo.h:267
void ff_MPV_common_init_x86(MpegEncContext *s)
Definition: mpegvideo.c:587
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:25
short DCTELEM
Definition: dsputil.h:39
uint8_t level
Definition: svq3.c:133
MpegEncContext.
Definition: mpegvideo.h:212
#define XMM_CLOBBERS_ONLY(...)
Definition: asm.h:95
int(* dct_error_sum)[64]
Definition: mpegvideo.h:468
DSP utils.
int x86_reg
Definition: asm.h:68
int flags
AVCodecContext.flags (HQ, MV4, ...)
Definition: mpegvideo.h:231
uint16_t intra_matrix[64]
matrix transmitted in the bitstream
Definition: mpegvideo.h:441
ScanTable inter_scantable
if inter == intra then intra should be used to reduce tha cache usage
Definition: mpegvideo.h:266
void(* dct_unquantize_h263_intra)(struct MpegEncContext *s, DCTELEM *block, int n, int qscale)
Definition: mpegvideo.h:678
int dct_count[2]
Definition: mpegvideo.h:469