2 * The simplest mpeg encoder (well, it was the simplest!)
3 * Copyright (c) 2000,2001 Gerard Lantau.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program 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
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 * Optimized for ia32 cpus by Nick Kurshev <nickols_k@mail.ru>
20 * h263, mpeg1, mpeg2 dequantizer & draw_edges by Michael Niedermayer <michaelni@gmx.at>
23 #include "../dsputil.h"
24 #include "../mpegvideo.h"
25 #include "../avcodec.h"
26 #include "../mangle.h"
28 extern UINT8 zigzag_end[64];
30 extern UINT8 zigzag_direct_noperm[64];
31 extern UINT16 inv_zigzag_direct16[64];
32 extern UINT32 inverse[256];
36 /* XXX: GL: I don't understand why this function needs optimization
37 (it is called only once per frame!), so I disabled it */
39 void MPV_frame_start(MpegEncContext *s)
41 if (s->pict_type == B_TYPE) {
43 "movl (%1), %%eax\n\t"
44 "movl 4(%1), %%edx\n\t"
45 "movl 8(%1), %%ecx\n\t"
46 "movl %%eax, (%0)\n\t"
47 "movl %%edx, 4(%0)\n\t"
48 "movl %%ecx, 8(%0)\n\t"
50 :"r"(s->current_picture), "r"(s->aux_picture)
51 :"eax","edx","ecx","memory");
53 /* swap next and last */
55 "movl (%1), %%eax\n\t"
56 "movl 4(%1), %%edx\n\t"
57 "movl 8(%1), %%ecx\n\t"
58 "xchgl (%0), %%eax\n\t"
59 "xchgl 4(%0), %%edx\n\t"
60 "xchgl 8(%0), %%ecx\n\t"
61 "movl %%eax, (%1)\n\t"
62 "movl %%edx, 4(%1)\n\t"
63 "movl %%ecx, 8(%1)\n\t"
64 "movl %%eax, (%2)\n\t"
65 "movl %%edx, 4(%2)\n\t"
66 "movl %%ecx, 8(%2)\n\t"
68 :"r"(s->last_picture), "r"(s->next_picture), "r"(s->current_picture)
69 :"eax","edx","ecx","memory");
74 static const unsigned long long int mm_wabs __attribute__ ((aligned(8))) = 0xffffffffffffffffULL;
75 static const unsigned long long int mm_wone __attribute__ ((aligned(8))) = 0x0001000100010001ULL;
78 static void dct_unquantize_h263_mmx(MpegEncContext *s,
79 DCTELEM *block, int n, int qscale)
81 int i, level, qmul, qadd, nCoeffs;
83 qmul = s->qscale << 1;
84 if (s->h263_aic && s->mb_intra)
87 qadd = (s->qscale - 1) | 1;
92 block[0] = block[0] * s->y_dc_scale;
94 block[0] = block[0] * s->c_dc_scale;
100 level = level * qmul - qadd;
102 level = level * qmul + qadd;
110 nCoeffs= zigzag_end[ s->block_last_index[n] ];
112 //printf("%d %d ", qmul, qadd);
114 "movd %1, %%mm6 \n\t" //qmul
115 "packssdw %%mm6, %%mm6 \n\t"
116 "packssdw %%mm6, %%mm6 \n\t"
117 "movd %2, %%mm5 \n\t" //qadd
118 "pxor %%mm7, %%mm7 \n\t"
119 "packssdw %%mm5, %%mm5 \n\t"
120 "packssdw %%mm5, %%mm5 \n\t"
121 "psubw %%mm5, %%mm7 \n\t"
122 "pxor %%mm4, %%mm4 \n\t"
125 "movq (%0, %3), %%mm0 \n\t"
126 "movq 8(%0, %3), %%mm1 \n\t"
128 "pmullw %%mm6, %%mm0 \n\t"
129 "pmullw %%mm6, %%mm1 \n\t"
131 "movq (%0, %3), %%mm2 \n\t"
132 "movq 8(%0, %3), %%mm3 \n\t"
134 "pcmpgtw %%mm4, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
135 "pcmpgtw %%mm4, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
137 "pxor %%mm2, %%mm0 \n\t"
138 "pxor %%mm3, %%mm1 \n\t"
140 "paddw %%mm7, %%mm0 \n\t"
141 "paddw %%mm7, %%mm1 \n\t"
143 "pxor %%mm0, %%mm2 \n\t"
144 "pxor %%mm1, %%mm3 \n\t"
146 "pcmpeqw %%mm7, %%mm0 \n\t" // block[i] == 0 ? -1 : 0
147 "pcmpeqw %%mm7, %%mm1 \n\t" // block[i] == 0 ? -1 : 0
149 "pandn %%mm2, %%mm0 \n\t"
150 "pandn %%mm3, %%mm1 \n\t"
152 "movq %%mm0, (%0, %3) \n\t"
153 "movq %%mm1, 8(%0, %3) \n\t"
157 ::"r" (block+nCoeffs), "g"(qmul), "g" (qadd), "r" (2*(i-nCoeffs))
165 Note: looking at PARANOID:
166 "enable all paranoid tests for rounding, overflows, etc..."
169 if (level < -2048 || level > 2047)
170 fprintf(stderr, "unquant error %d %d\n", i, level);
172 We can suppose that result of two multiplications can't be greate of 0xFFFF
173 i.e. is 16-bit, so we use here only PMULLW instruction and can avoid
174 a complex multiplication.
175 =====================================================
176 Full formula for multiplication of 2 integer numbers
177 which are represent as high:low words:
178 input: value1 = high1:low1
180 output: value3 = value1*value2
181 value3=high3:low3 (on overflow: modulus 2^32 wrap-around)
182 this mean that for 0x123456 * 0x123456 correct result is 0x766cb0ce4
183 but this algorithm will compute only 0x66cb0ce4
184 this limited by 16-bit size of operands
185 ---------------------------------
188 tlow1 = tlow1 + tlow2
189 high3:low3 = low1*low2
192 static void dct_unquantize_mpeg1_mmx(MpegEncContext *s,
193 DCTELEM *block, int n, int qscale)
196 const UINT16 *quant_matrix;
198 if(s->alternate_scan) nCoeffs= 64;
199 else nCoeffs= nCoeffs= zigzag_end[ s->block_last_index[n] ];
204 block0 = block[0] * s->y_dc_scale;
206 block0 = block[0] * s->c_dc_scale;
207 /* XXX: only mpeg1 */
208 quant_matrix = s->intra_matrix;
210 "pcmpeqw %%mm7, %%mm7 \n\t"
211 "psrlw $15, %%mm7 \n\t"
212 "movd %2, %%mm6 \n\t"
213 "packssdw %%mm6, %%mm6 \n\t"
214 "packssdw %%mm6, %%mm6 \n\t"
215 "movl %3, %%eax \n\t"
218 "movq (%0, %%eax), %%mm0 \n\t"
219 "movq 8(%0, %%eax), %%mm1 \n\t"
220 "movq (%1, %%eax), %%mm4 \n\t"
221 "movq 8(%1, %%eax), %%mm5 \n\t"
222 "pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
223 "pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
224 "pxor %%mm2, %%mm2 \n\t"
225 "pxor %%mm3, %%mm3 \n\t"
226 "pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
227 "pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
228 "pxor %%mm2, %%mm0 \n\t"
229 "pxor %%mm3, %%mm1 \n\t"
230 "psubw %%mm2, %%mm0 \n\t" // abs(block[i])
231 "psubw %%mm3, %%mm1 \n\t" // abs(block[i])
232 "pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*q
233 "pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*q
234 "pxor %%mm4, %%mm4 \n\t"
235 "pxor %%mm5, %%mm5 \n\t" // FIXME slow
236 "pcmpeqw (%0, %%eax), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
237 "pcmpeqw 8(%0, %%eax), %%mm5 \n\t" // block[i] == 0 ? -1 : 0
238 "psraw $3, %%mm0 \n\t"
239 "psraw $3, %%mm1 \n\t"
240 "psubw %%mm7, %%mm0 \n\t"
241 "psubw %%mm7, %%mm1 \n\t"
242 "por %%mm7, %%mm0 \n\t"
243 "por %%mm7, %%mm1 \n\t"
244 "pxor %%mm2, %%mm0 \n\t"
245 "pxor %%mm3, %%mm1 \n\t"
246 "psubw %%mm2, %%mm0 \n\t"
247 "psubw %%mm3, %%mm1 \n\t"
248 "pandn %%mm0, %%mm4 \n\t"
249 "pandn %%mm1, %%mm5 \n\t"
250 "movq %%mm4, (%0, %%eax) \n\t"
251 "movq %%mm5, 8(%0, %%eax) \n\t"
253 "addl $16, %%eax \n\t"
255 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "g" (qscale), "g" (-2*nCoeffs)
261 quant_matrix = s->inter_matrix;
263 "pcmpeqw %%mm7, %%mm7 \n\t"
264 "psrlw $15, %%mm7 \n\t"
265 "movd %2, %%mm6 \n\t"
266 "packssdw %%mm6, %%mm6 \n\t"
267 "packssdw %%mm6, %%mm6 \n\t"
268 "movl %3, %%eax \n\t"
271 "movq (%0, %%eax), %%mm0 \n\t"
272 "movq 8(%0, %%eax), %%mm1 \n\t"
273 "movq (%1, %%eax), %%mm4 \n\t"
274 "movq 8(%1, %%eax), %%mm5 \n\t"
275 "pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
276 "pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
277 "pxor %%mm2, %%mm2 \n\t"
278 "pxor %%mm3, %%mm3 \n\t"
279 "pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
280 "pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
281 "pxor %%mm2, %%mm0 \n\t"
282 "pxor %%mm3, %%mm1 \n\t"
283 "psubw %%mm2, %%mm0 \n\t" // abs(block[i])
284 "psubw %%mm3, %%mm1 \n\t" // abs(block[i])
285 "paddw %%mm0, %%mm0 \n\t" // abs(block[i])*2
286 "paddw %%mm1, %%mm1 \n\t" // abs(block[i])*2
287 "paddw %%mm7, %%mm0 \n\t" // abs(block[i])*2 + 1
288 "paddw %%mm7, %%mm1 \n\t" // abs(block[i])*2 + 1
289 "pmullw %%mm4, %%mm0 \n\t" // (abs(block[i])*2 + 1)*q
290 "pmullw %%mm5, %%mm1 \n\t" // (abs(block[i])*2 + 1)*q
291 "pxor %%mm4, %%mm4 \n\t"
292 "pxor %%mm5, %%mm5 \n\t" // FIXME slow
293 "pcmpeqw (%0, %%eax), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
294 "pcmpeqw 8(%0, %%eax), %%mm5 \n\t" // block[i] == 0 ? -1 : 0
295 "psraw $4, %%mm0 \n\t"
296 "psraw $4, %%mm1 \n\t"
297 "psubw %%mm7, %%mm0 \n\t"
298 "psubw %%mm7, %%mm1 \n\t"
299 "por %%mm7, %%mm0 \n\t"
300 "por %%mm7, %%mm1 \n\t"
301 "pxor %%mm2, %%mm0 \n\t"
302 "pxor %%mm3, %%mm1 \n\t"
303 "psubw %%mm2, %%mm0 \n\t"
304 "psubw %%mm3, %%mm1 \n\t"
305 "pandn %%mm0, %%mm4 \n\t"
306 "pandn %%mm1, %%mm5 \n\t"
307 "movq %%mm4, (%0, %%eax) \n\t"
308 "movq %%mm5, 8(%0, %%eax) \n\t"
310 "addl $16, %%eax \n\t"
312 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "g" (qscale), "g" (-2*nCoeffs)
318 static void dct_unquantize_mpeg2_mmx(MpegEncContext *s,
319 DCTELEM *block, int n, int qscale)
322 const UINT16 *quant_matrix;
324 if(s->alternate_scan) nCoeffs= 64;
325 else nCoeffs= nCoeffs= zigzag_end[ s->block_last_index[n] ];
330 block0 = block[0] * s->y_dc_scale;
332 block0 = block[0] * s->c_dc_scale;
333 quant_matrix = s->intra_matrix;
335 "pcmpeqw %%mm7, %%mm7 \n\t"
336 "psrlw $15, %%mm7 \n\t"
337 "movd %2, %%mm6 \n\t"
338 "packssdw %%mm6, %%mm6 \n\t"
339 "packssdw %%mm6, %%mm6 \n\t"
340 "movl %3, %%eax \n\t"
343 "movq (%0, %%eax), %%mm0 \n\t"
344 "movq 8(%0, %%eax), %%mm1 \n\t"
345 "movq (%1, %%eax), %%mm4 \n\t"
346 "movq 8(%1, %%eax), %%mm5 \n\t"
347 "pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
348 "pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
349 "pxor %%mm2, %%mm2 \n\t"
350 "pxor %%mm3, %%mm3 \n\t"
351 "pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
352 "pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
353 "pxor %%mm2, %%mm0 \n\t"
354 "pxor %%mm3, %%mm1 \n\t"
355 "psubw %%mm2, %%mm0 \n\t" // abs(block[i])
356 "psubw %%mm3, %%mm1 \n\t" // abs(block[i])
357 "pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*q
358 "pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*q
359 "pxor %%mm4, %%mm4 \n\t"
360 "pxor %%mm5, %%mm5 \n\t" // FIXME slow
361 "pcmpeqw (%0, %%eax), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
362 "pcmpeqw 8(%0, %%eax), %%mm5 \n\t" // block[i] == 0 ? -1 : 0
363 "psraw $3, %%mm0 \n\t"
364 "psraw $3, %%mm1 \n\t"
365 "pxor %%mm2, %%mm0 \n\t"
366 "pxor %%mm3, %%mm1 \n\t"
367 "psubw %%mm2, %%mm0 \n\t"
368 "psubw %%mm3, %%mm1 \n\t"
369 "pandn %%mm0, %%mm4 \n\t"
370 "pandn %%mm1, %%mm5 \n\t"
371 "movq %%mm4, (%0, %%eax) \n\t"
372 "movq %%mm5, 8(%0, %%eax) \n\t"
374 "addl $16, %%eax \n\t"
376 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "g" (qscale), "g" (-2*nCoeffs)
380 //Note, we dont do mismatch control for intra as errors cannot accumulate
383 quant_matrix = s->inter_matrix;
385 "pcmpeqw %%mm7, %%mm7 \n\t"
386 "psrlq $48, %%mm7 \n\t"
387 "movd %2, %%mm6 \n\t"
388 "packssdw %%mm6, %%mm6 \n\t"
389 "packssdw %%mm6, %%mm6 \n\t"
390 "movl %3, %%eax \n\t"
393 "movq (%0, %%eax), %%mm0 \n\t"
394 "movq 8(%0, %%eax), %%mm1 \n\t"
395 "movq (%1, %%eax), %%mm4 \n\t"
396 "movq 8(%1, %%eax), %%mm5 \n\t"
397 "pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
398 "pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
399 "pxor %%mm2, %%mm2 \n\t"
400 "pxor %%mm3, %%mm3 \n\t"
401 "pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
402 "pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
403 "pxor %%mm2, %%mm0 \n\t"
404 "pxor %%mm3, %%mm1 \n\t"
405 "psubw %%mm2, %%mm0 \n\t" // abs(block[i])
406 "psubw %%mm3, %%mm1 \n\t" // abs(block[i])
407 "paddw %%mm0, %%mm0 \n\t" // abs(block[i])*2
408 "paddw %%mm1, %%mm1 \n\t" // abs(block[i])*2
409 "pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*2*q
410 "pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*2*q
411 "paddw %%mm4, %%mm0 \n\t" // (abs(block[i])*2 + 1)*q
412 "paddw %%mm5, %%mm1 \n\t" // (abs(block[i])*2 + 1)*q
413 "pxor %%mm4, %%mm4 \n\t"
414 "pxor %%mm5, %%mm5 \n\t" // FIXME slow
415 "pcmpeqw (%0, %%eax), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
416 "pcmpeqw 8(%0, %%eax), %%mm5 \n\t" // block[i] == 0 ? -1 : 0
417 "psrlw $4, %%mm0 \n\t"
418 "psrlw $4, %%mm1 \n\t"
419 "pxor %%mm2, %%mm0 \n\t"
420 "pxor %%mm3, %%mm1 \n\t"
421 "psubw %%mm2, %%mm0 \n\t"
422 "psubw %%mm3, %%mm1 \n\t"
423 "pandn %%mm0, %%mm4 \n\t"
424 "pandn %%mm1, %%mm5 \n\t"
425 "pxor %%mm4, %%mm7 \n\t"
426 "pxor %%mm5, %%mm7 \n\t"
427 "movq %%mm4, (%0, %%eax) \n\t"
428 "movq %%mm5, 8(%0, %%eax) \n\t"
430 "addl $16, %%eax \n\t"
432 "movd 124(%0, %3), %%mm0 \n\t"
433 "movq %%mm7, %%mm6 \n\t"
434 "psrlq $32, %%mm7 \n\t"
435 "pxor %%mm6, %%mm7 \n\t"
436 "movq %%mm7, %%mm6 \n\t"
437 "psrlq $16, %%mm7 \n\t"
438 "pxor %%mm6, %%mm7 \n\t"
439 "pslld $31, %%mm7 \n\t"
440 "psrlq $15, %%mm7 \n\t"
441 "pxor %%mm7, %%mm0 \n\t"
442 "movd %%mm0, 124(%0, %3) \n\t"
444 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "g" (qscale), "r" (-2*nCoeffs)
450 /* draw the edges of width 'w' of an image of size width, height
451 this mmx version can only handle w==8 || w==16 */
452 static void draw_edges_mmx(UINT8 *buf, int wrap, int width, int height, int w)
454 UINT8 *ptr, *last_line;
457 last_line = buf + (height - 1) * wrap;
464 "movd (%0), %%mm0 \n\t"
465 "punpcklbw %%mm0, %%mm0 \n\t"
466 "punpcklwd %%mm0, %%mm0 \n\t"
467 "punpckldq %%mm0, %%mm0 \n\t"
468 "movq %%mm0, -8(%0) \n\t"
469 "movq -8(%0, %2), %%mm1 \n\t"
470 "punpckhbw %%mm1, %%mm1 \n\t"
471 "punpckhwd %%mm1, %%mm1 \n\t"
472 "punpckhdq %%mm1, %%mm1 \n\t"
473 "movq %%mm1, (%0, %2) \n\t"
478 : "r" (wrap), "r" (width), "r" (ptr + wrap*height)
485 "movd (%0), %%mm0 \n\t"
486 "punpcklbw %%mm0, %%mm0 \n\t"
487 "punpcklwd %%mm0, %%mm0 \n\t"
488 "punpckldq %%mm0, %%mm0 \n\t"
489 "movq %%mm0, -8(%0) \n\t"
490 "movq %%mm0, -16(%0) \n\t"
491 "movq -8(%0, %2), %%mm1 \n\t"
492 "punpckhbw %%mm1, %%mm1 \n\t"
493 "punpckhwd %%mm1, %%mm1 \n\t"
494 "punpckhdq %%mm1, %%mm1 \n\t"
495 "movq %%mm1, (%0, %2) \n\t"
496 "movq %%mm1, 8(%0, %2) \n\t"
501 : "r" (wrap), "r" (width), "r" (ptr + wrap*height)
506 /* top and bottom (and hopefully also the corners) */
507 ptr= buf - (i + 1) * wrap - w;
510 "movq (%1, %0), %%mm0 \n\t"
511 "movq %%mm0, (%0) \n\t"
512 "movq %%mm0, (%0, %2) \n\t"
513 "movq %%mm0, (%0, %2, 2) \n\t"
514 "movq %%mm0, (%0, %3) \n\t"
519 : "r" ((int)buf - (int)ptr - w), "r" (-wrap), "r" (-wrap*3), "r" (ptr+width+2*w)
521 ptr= last_line + (i + 1) * wrap - w;
524 "movq (%1, %0), %%mm0 \n\t"
525 "movq %%mm0, (%0) \n\t"
526 "movq %%mm0, (%0, %2) \n\t"
527 "movq %%mm0, (%0, %2, 2) \n\t"
528 "movq %%mm0, (%0, %3) \n\t"
533 : "r" ((int)last_line - (int)ptr - w), "r" (wrap), "r" (wrap*3), "r" (ptr+width+2*w)
538 static volatile int esp_temp;
540 void unused_var_warning_killer(){
545 #define RENAME(a) a ## _MMX
546 #include "mpegvideo_mmx_template.c"
550 #define RENAME(a) a ## _MMX2
551 #include "mpegvideo_mmx_template.c"
553 void MPV_common_init_mmx(MpegEncContext *s)
555 if (mm_flags & MM_MMX) {
556 s->dct_unquantize_h263 = dct_unquantize_h263_mmx;
557 s->dct_unquantize_mpeg1 = dct_unquantize_mpeg1_mmx;
558 s->dct_unquantize_mpeg2 = dct_unquantize_mpeg2_mmx;
560 draw_edges = draw_edges_mmx;
562 if(mm_flags & MM_MMXEXT){
563 dct_quantize= dct_quantize_MMX2;
565 dct_quantize= dct_quantize_MMX;