3 * Copyright (C) 1999-2001 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
5 * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
6 * See http://libmpeg2.sourceforge.net/ for updates.
8 * mpeg2dec is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * mpeg2dec is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with mpeg2dec; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "libavutil/common.h"
24 #include "libavcodec/dsputil.h"
26 #include "libavutil/x86_cpu.h"
27 #include "dsputil_mmx.h"
32 #define round(bias) ((int)(((bias)+0.5) * (1<<ROW_SHIFT)))
33 #define rounder(bias) {round (bias), round (bias)}
37 /* C row IDCT - it is just here to document the MMXEXT and MMX versions */
38 static inline void idct_row (int16_t * row, int offset,
39 int16_t * table, int32_t * rounder)
41 int C1, C2, C3, C4, C5, C6, C7;
42 int a0, a1, a2, a3, b0, b1, b2, b3;
54 a0 = C4*row[0] + C2*row[2] + C4*row[4] + C6*row[6] + *rounder;
55 a1 = C4*row[0] + C6*row[2] - C4*row[4] - C2*row[6] + *rounder;
56 a2 = C4*row[0] - C6*row[2] - C4*row[4] + C2*row[6] + *rounder;
57 a3 = C4*row[0] - C2*row[2] + C4*row[4] - C6*row[6] + *rounder;
59 b0 = C1*row[1] + C3*row[3] + C5*row[5] + C7*row[7];
60 b1 = C3*row[1] - C7*row[3] - C1*row[5] - C5*row[7];
61 b2 = C5*row[1] - C1*row[3] + C7*row[5] + C3*row[7];
62 b3 = C7*row[1] - C5*row[3] + C3*row[5] - C1*row[7];
64 row[0] = (a0 + b0) >> ROW_SHIFT;
65 row[1] = (a1 + b1) >> ROW_SHIFT;
66 row[2] = (a2 + b2) >> ROW_SHIFT;
67 row[3] = (a3 + b3) >> ROW_SHIFT;
68 row[4] = (a3 - b3) >> ROW_SHIFT;
69 row[5] = (a2 - b2) >> ROW_SHIFT;
70 row[6] = (a1 - b1) >> ROW_SHIFT;
71 row[7] = (a0 - b0) >> ROW_SHIFT;
78 #define mmxext_table(c1,c2,c3,c4,c5,c6,c7) { c4, c2, -c4, -c2, \
87 static inline void mmxext_row_head (int16_t * const row, const int offset,
88 const int16_t * const table)
91 "movq (%0), %%mm2 \n\t" /* mm2 = x6 x4 x2 x0 */
93 "movq 8(%0), %%mm5 \n\t" /* mm5 = x7 x5 x3 x1 */
94 "movq %%mm2, %%mm0 \n\t" /* mm0 = x6 x4 x2 x0 */
96 "movq (%1), %%mm3 \n\t" /* mm3 = -C2 -C4 C2 C4 */
97 "movq %%mm5, %%mm6 \n\t" /* mm6 = x7 x5 x3 x1 */
99 "movq 8(%1), %%mm4 \n\t" /* mm4 = C6 C4 C6 C4 */
100 "pmaddwd %%mm0, %%mm3 \n\t" /* mm3 = -C4*x4-C2*x6 C4*x0+C2*x2 */
102 "pshufw $0x4e, %%mm2, %%mm2 \n\t" /* mm2 = x2 x0 x6 x4 */
103 :: "r" ((row+offset)), "r" (table)
107 static inline void mmxext_row (const int16_t * const table,
108 const int32_t * const rounder)
111 "movq 16(%0), %%mm1 \n\t" /* mm1 = -C5 -C1 C3 C1 */
112 "pmaddwd %%mm2, %%mm4 \n\t" /* mm4 = C4*x0+C6*x2 C4*x4+C6*x6 */
114 "pmaddwd 32(%0), %%mm0 \n\t" /* mm0 = C4*x4-C6*x6 C4*x0-C6*x2 */
115 "pshufw $0x4e, %%mm6, %%mm6 \n\t" /* mm6 = x3 x1 x7 x5 */
117 "movq 24(%0), %%mm7 \n\t" /* mm7 = -C7 C3 C7 C5 */
118 "pmaddwd %%mm5, %%mm1 \n\t" /* mm1= -C1*x5-C5*x7 C1*x1+C3*x3 */
120 "paddd (%1), %%mm3 \n\t" /* mm3 += rounder */
121 "pmaddwd %%mm6, %%mm7 \n\t" /* mm7 = C3*x1-C7*x3 C5*x5+C7*x7 */
123 "pmaddwd 40(%0), %%mm2 \n\t" /* mm2= C4*x0-C2*x2 -C4*x4+C2*x6 */
124 "paddd %%mm4, %%mm3 \n\t" /* mm3 = a1 a0 + rounder */
126 "pmaddwd 48(%0), %%mm5 \n\t" /* mm5 = C3*x5-C1*x7 C5*x1-C1*x3 */
127 "movq %%mm3, %%mm4 \n\t" /* mm4 = a1 a0 + rounder */
129 "pmaddwd 56(%0), %%mm6 \n\t" /* mm6 = C7*x1-C5*x3 C7*x5+C3*x7 */
130 "paddd %%mm7, %%mm1 \n\t" /* mm1 = b1 b0 */
132 "paddd (%1), %%mm0 \n\t" /* mm0 += rounder */
133 "psubd %%mm1, %%mm3 \n\t" /* mm3 = a1-b1 a0-b0 + rounder */
135 "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm3 \n\t" /* mm3 = y6 y7 */
136 "paddd %%mm4, %%mm1 \n\t" /* mm1 = a1+b1 a0+b0 + rounder */
138 "paddd %%mm2, %%mm0 \n\t" /* mm0 = a3 a2 + rounder */
139 "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm1 \n\t" /* mm1 = y1 y0 */
141 "paddd %%mm6, %%mm5 \n\t" /* mm5 = b3 b2 */
142 "movq %%mm0, %%mm4 \n\t" /* mm4 = a3 a2 + rounder */
144 "paddd %%mm5, %%mm0 \n\t" /* mm0 = a3+b3 a2+b2 + rounder */
145 "psubd %%mm5, %%mm4 \n\t" /* mm4 = a3-b3 a2-b2 + rounder */
146 : : "r" (table), "r" (rounder));
149 static inline void mmxext_row_tail (int16_t * const row, const int store)
152 "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm0 \n\t" /* mm0 = y3 y2 */
154 "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm4 \n\t" /* mm4 = y4 y5 */
156 "packssdw %%mm0, %%mm1 \n\t" /* mm1 = y3 y2 y1 y0 */
158 "packssdw %%mm3, %%mm4 \n\t" /* mm4 = y6 y7 y4 y5 */
160 "movq %%mm1, (%0) \n\t" /* save y3 y2 y1 y0 */
161 "pshufw $0xb1, %%mm4, %%mm4 \n\t" /* mm4 = y7 y6 y5 y4 */
165 "movq %%mm4, 8(%0) \n\t" /* save y7 y6 y5 y4 */
170 static inline void mmxext_row_mid (int16_t * const row, const int store,
172 const int16_t * const table)
175 "movq (%0,%1), %%mm2 \n\t" /* mm2 = x6 x4 x2 x0 */
176 "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm0 \n\t" /* mm0 = y3 y2 */
178 "movq 8(%0,%1), %%mm5 \n\t" /* mm5 = x7 x5 x3 x1 */
179 "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm4 \n\t" /* mm4 = y4 y5 */
181 "packssdw %%mm0, %%mm1 \n\t" /* mm1 = y3 y2 y1 y0 */
182 "movq %%mm5, %%mm6 \n\t" /* mm6 = x7 x5 x3 x1 */
184 "packssdw %%mm3, %%mm4 \n\t" /* mm4 = y6 y7 y4 y5 */
185 "movq %%mm2, %%mm0 \n\t" /* mm0 = x6 x4 x2 x0 */
187 "movq %%mm1, (%0,%2) \n\t" /* save y3 y2 y1 y0 */
188 "pshufw $0xb1, %%mm4, %%mm4\n\t" /* mm4 = y7 y6 y5 y4 */
190 "movq (%3), %%mm3 \n\t" /* mm3 = -C2 -C4 C2 C4 */
191 "movq %%mm4, 8(%0,%2) \n\t" /* save y7 y6 y5 y4 */
193 "pmaddwd %%mm0, %%mm3 \n\t" /* mm3= -C4*x4-C2*x6 C4*x0+C2*x2 */
195 "movq 8(%3), %%mm4 \n\t" /* mm4 = C6 C4 C6 C4 */
196 "pshufw $0x4e, %%mm2, %%mm2\n\t" /* mm2 = x2 x0 x6 x4 */
197 :: "r" (row), "r" ((x86_reg) (2*offset)), "r" ((x86_reg) (2*store)), "r" (table)
204 #define mmx_table(c1,c2,c3,c4,c5,c6,c7) { c4, c2, c4, c6, \
213 static inline void mmx_row_head (int16_t * const row, const int offset,
214 const int16_t * const table)
217 "movq (%0), %%mm2 \n\t" /* mm2 = x6 x4 x2 x0 */
219 "movq 8(%0), %%mm5 \n\t" /* mm5 = x7 x5 x3 x1 */
220 "movq %%mm2, %%mm0 \n\t" /* mm0 = x6 x4 x2 x0 */
222 "movq (%1), %%mm3 \n\t" /* mm3 = C6 C4 C2 C4 */
223 "movq %%mm5, %%mm6 \n\t" /* mm6 = x7 x5 x3 x1 */
225 "punpckldq %%mm0, %%mm0 \n\t" /* mm0 = x2 x0 x2 x0 */
227 "movq 8(%1), %%mm4 \n\t" /* mm4 = -C2 -C4 C6 C4 */
228 "pmaddwd %%mm0, %%mm3 \n\t" /* mm3 = C4*x0+C6*x2 C4*x0+C2*x2 */
230 "movq 16(%1), %%mm1 \n\t" /* mm1 = -C7 C3 C3 C1 */
231 "punpckhdq %%mm2, %%mm2 \n\t" /* mm2 = x6 x4 x6 x4 */
232 :: "r" ((row+offset)), "r" (table)
236 static inline void mmx_row (const int16_t * const table,
237 const int32_t * const rounder)
240 "pmaddwd %%mm2, %%mm4 \n\t" /* mm4 = -C4*x4-C2*x6 C4*x4+C6*x6 */
241 "punpckldq %%mm5, %%mm5 \n\t" /* mm5 = x3 x1 x3 x1 */
243 "pmaddwd 32(%0), %%mm0 \n\t" /* mm0 = C4*x0-C2*x2 C4*x0-C6*x2 */
244 "punpckhdq %%mm6, %%mm6 \n\t" /* mm6 = x7 x5 x7 x5 */
246 "movq 24(%0), %%mm7 \n\t" /* mm7 = -C5 -C1 C7 C5 */
247 "pmaddwd %%mm5, %%mm1 \n\t" /* mm1 = C3*x1-C7*x3 C1*x1+C3*x3 */
249 "paddd (%1), %%mm3 \n\t" /* mm3 += rounder */
250 "pmaddwd %%mm6, %%mm7 \n\t" /* mm7 = -C1*x5-C5*x7 C5*x5+C7*x7 */
252 "pmaddwd 40(%0), %%mm2 \n\t" /* mm2 = C4*x4-C6*x6 -C4*x4+C2*x6 */
253 "paddd %%mm4, %%mm3 \n\t" /* mm3 = a1 a0 + rounder */
255 "pmaddwd 48(%0), %%mm5 \n\t" /* mm5 = C7*x1-C5*x3 C5*x1-C1*x3 */
256 "movq %%mm3, %%mm4 \n\t" /* mm4 = a1 a0 + rounder */
258 "pmaddwd 56(%0), %%mm6 \n\t" /* mm6 = C3*x5-C1*x7 C7*x5+C3*x7 */
259 "paddd %%mm7, %%mm1 \n\t" /* mm1 = b1 b0 */
261 "paddd (%1), %%mm0 \n\t" /* mm0 += rounder */
262 "psubd %%mm1, %%mm3 \n\t" /* mm3 = a1-b1 a0-b0 + rounder */
264 "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm3 \n\t" /* mm3 = y6 y7 */
265 "paddd %%mm4, %%mm1 \n\t" /* mm1 = a1+b1 a0+b0 + rounder */
267 "paddd %%mm2, %%mm0 \n\t" /* mm0 = a3 a2 + rounder */
268 "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm1 \n\t" /* mm1 = y1 y0 */
270 "paddd %%mm6, %%mm5 \n\t" /* mm5 = b3 b2 */
271 "movq %%mm0, %%mm7 \n\t" /* mm7 = a3 a2 + rounder */
273 "paddd %%mm5, %%mm0 \n\t" /* mm0 = a3+b3 a2+b2 + rounder */
274 "psubd %%mm5, %%mm7 \n\t" /* mm7 = a3-b3 a2-b2 + rounder */
275 :: "r" (table), "r" (rounder)
279 static inline void mmx_row_tail (int16_t * const row, const int store)
282 "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm0 \n\t" /* mm0 = y3 y2 */
284 "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm7 \n\t" /* mm7 = y4 y5 */
286 "packssdw %%mm0, %%mm1 \n\t" /* mm1 = y3 y2 y1 y0 */
288 "packssdw %%mm3, %%mm7 \n\t" /* mm7 = y6 y7 y4 y5 */
290 "movq %%mm1, (%0) \n\t" /* save y3 y2 y1 y0 */
291 "movq %%mm7, %%mm4 \n\t" /* mm4 = y6 y7 y4 y5 */
293 "pslld $16, %%mm7 \n\t" /* mm7 = y7 0 y5 0 */
295 "psrld $16, %%mm4 \n\t" /* mm4 = 0 y6 0 y4 */
297 "por %%mm4, %%mm7 \n\t" /* mm7 = y7 y6 y5 y4 */
301 "movq %%mm7, 8(%0) \n\t" /* save y7 y6 y5 y4 */
306 static inline void mmx_row_mid (int16_t * const row, const int store,
307 const int offset, const int16_t * const table)
311 "movq (%0,%1), %%mm2 \n\t" /* mm2 = x6 x4 x2 x0 */
312 "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm0 \n\t" /* mm0 = y3 y2 */
314 "movq 8(%0,%1), %%mm5 \n\t" /* mm5 = x7 x5 x3 x1 */
315 "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm7 \n\t" /* mm7 = y4 y5 */
317 "packssdw %%mm0, %%mm1 \n\t" /* mm1 = y3 y2 y1 y0 */
318 "movq %%mm5, %%mm6 \n\t" /* mm6 = x7 x5 x3 x1 */
320 "packssdw %%mm3, %%mm7 \n\t" /* mm7 = y6 y7 y4 y5 */
321 "movq %%mm2, %%mm0 \n\t" /* mm0 = x6 x4 x2 x0 */
323 "movq %%mm1, (%0,%2) \n\t" /* save y3 y2 y1 y0 */
324 "movq %%mm7, %%mm1 \n\t" /* mm1 = y6 y7 y4 y5 */
326 "punpckldq %%mm0, %%mm0 \n\t" /* mm0 = x2 x0 x2 x0 */
327 "psrld $16, %%mm7 \n\t" /* mm7 = 0 y6 0 y4 */
329 "movq (%3), %%mm3 \n\t" /* mm3 = C6 C4 C2 C4 */
330 "pslld $16, %%mm1 \n\t" /* mm1 = y7 0 y5 0 */
332 "movq 8(%3), %%mm4 \n\t" /* mm4 = -C2 -C4 C6 C4 */
333 "por %%mm1, %%mm7 \n\t" /* mm7 = y7 y6 y5 y4 */
335 "movq 16(%3), %%mm1 \n\t" /* mm1 = -C7 C3 C3 C1 */
336 "punpckhdq %%mm2, %%mm2 \n\t" /* mm2 = x6 x4 x6 x4 */
338 "movq %%mm7, 8(%0,%2) \n\t" /* save y7 y6 y5 y4 */
339 "pmaddwd %%mm0, %%mm3 \n\t" /* mm3 = C4*x0+C6*x2 C4*x0+C2*x2 */
340 : : "r" (row), "r" ((x86_reg) (2*offset)), "r" ((x86_reg) (2*store)), "r" (table)
346 /* C column IDCT - it is just here to document the MMXEXT and MMX versions */
347 static inline void idct_col (int16_t * col, int offset)
349 /* multiplication - as implemented on mmx */
350 #define F(c,x) (((c) * (x)) >> 16)
352 /* saturation - it helps us handle torture test cases */
353 #define S(x) (((x)>32767) ? 32767 : ((x)<-32768) ? -32768 : (x))
355 int16_t x0, x1, x2, x3, x4, x5, x6, x7;
356 int16_t y0, y1, y2, y3, y4, y5, y6, y7;
357 int16_t a0, a1, a2, a3, b0, b1, b2, b3;
358 int16_t u04, v04, u26, v26, u17, v17, u35, v35, u12, v12;
373 u26 = S (F (T2, x6) + x2);
374 v26 = S (F (T2, x2) - x6);
381 u17 = S (F (T1, x7) + x1);
382 v17 = S (F (T1, x1) - x7);
383 u35 = S (F (T3, x5) + x3);
384 v35 = S (F (T3, x3) - x5);
390 u12 = S (2 * F (C4, u12));
391 v12 = S (2 * F (C4, v12));
395 y0 = S (a0 + b0) >> COL_SHIFT;
396 y1 = S (a1 + b1) >> COL_SHIFT;
397 y2 = S (a2 + b2) >> COL_SHIFT;
398 y3 = S (a3 + b3) >> COL_SHIFT;
400 y4 = S (a3 - b3) >> COL_SHIFT;
401 y5 = S (a2 - b2) >> COL_SHIFT;
402 y6 = S (a1 - b1) >> COL_SHIFT;
403 y7 = S (a0 - b0) >> COL_SHIFT;
417 /* MMX column IDCT */
418 static inline void idct_col (int16_t * const col, const int offset)
425 DECLARE_ALIGNED(8, static const short, t1_vector)[] = {
432 /* column code adapted from Peter Gubanov */
433 /* http://www.elecard.com/peter/idct.shtml */
436 "movq (%0), %%mm0 \n\t" /* mm0 = T1 */
438 "movq 2*8(%1), %%mm1 \n\t" /* mm1 = x1 */
439 "movq %%mm0, %%mm2 \n\t" /* mm2 = T1 */
441 "movq 7*2*8(%1), %%mm4 \n\t" /* mm4 = x7 */
442 "pmulhw %%mm1, %%mm0 \n\t" /* mm0 = T1*x1 */
444 "movq 16(%0), %%mm5 \n\t" /* mm5 = T3 */
445 "pmulhw %%mm4, %%mm2 \n\t" /* mm2 = T1*x7 */
447 "movq 2*5*8(%1), %%mm6 \n\t" /* mm6 = x5 */
448 "movq %%mm5, %%mm7 \n\t" /* mm7 = T3-1 */
450 "movq 3*8*2(%1), %%mm3 \n\t" /* mm3 = x3 */
451 "psubsw %%mm4, %%mm0 \n\t" /* mm0 = v17 */
453 "movq 8(%0), %%mm4 \n\t" /* mm4 = T2 */
454 "pmulhw %%mm3, %%mm5 \n\t" /* mm5 = (T3-1)*x3 */
456 "paddsw %%mm2, %%mm1 \n\t" /* mm1 = u17 */
457 "pmulhw %%mm6, %%mm7 \n\t" /* mm7 = (T3-1)*x5 */
461 "movq %%mm4, %%mm2 \n\t" /* mm2 = T2 */
462 "paddsw %%mm3, %%mm5 \n\t" /* mm5 = T3*x3 */
464 "pmulhw 2*8*2(%1), %%mm4 \n\t" /* mm4 = T2*x2 */
465 "paddsw %%mm6, %%mm7 \n\t" /* mm7 = T3*x5 */
467 "psubsw %%mm6, %%mm5 \n\t" /* mm5 = v35 */
468 "paddsw %%mm3, %%mm7 \n\t" /* mm7 = u35 */
470 "movq 6*8*2(%1), %%mm3 \n\t" /* mm3 = x6 */
471 "movq %%mm0, %%mm6 \n\t" /* mm6 = v17 */
473 "pmulhw %%mm3, %%mm2 \n\t" /* mm2 = T2*x6 */
474 "psubsw %%mm5, %%mm0 \n\t" /* mm0 = b3 */
476 "psubsw %%mm3, %%mm4 \n\t" /* mm4 = v26 */
477 "paddsw %%mm6, %%mm5 \n\t" /* mm5 = v12 */
479 "movq %%mm0, 3*8*2(%1)\n\t" /* save b3 in scratch0 */
480 "movq %%mm1, %%mm6 \n\t" /* mm6 = u17 */
482 "paddsw 2*8*2(%1), %%mm2 \n\t" /* mm2 = u26 */
483 "paddsw %%mm7, %%mm6 \n\t" /* mm6 = b0 */
485 "psubsw %%mm7, %%mm1 \n\t" /* mm1 = u12 */
486 "movq %%mm1, %%mm7 \n\t" /* mm7 = u12 */
488 "movq 0*8(%1), %%mm3 \n\t" /* mm3 = x0 */
489 "paddsw %%mm5, %%mm1 \n\t" /* mm1 = u12+v12 */
491 "movq 24(%0), %%mm0 \n\t" /* mm0 = C4/2 */
492 "psubsw %%mm5, %%mm7 \n\t" /* mm7 = u12-v12 */
494 "movq %%mm6, 5*8*2(%1)\n\t" /* save b0 in scratch1 */
495 "pmulhw %%mm0, %%mm1 \n\t" /* mm1 = b1/2 */
497 "movq %%mm4, %%mm6 \n\t" /* mm6 = v26 */
498 "pmulhw %%mm0, %%mm7 \n\t" /* mm7 = b2/2 */
500 "movq 4*8*2(%1), %%mm5 \n\t" /* mm5 = x4 */
501 "movq %%mm3, %%mm0 \n\t" /* mm0 = x0 */
503 "psubsw %%mm5, %%mm3 \n\t" /* mm3 = v04 */
504 "paddsw %%mm5, %%mm0 \n\t" /* mm0 = u04 */
506 "paddsw %%mm3, %%mm4 \n\t" /* mm4 = a1 */
507 "movq %%mm0, %%mm5 \n\t" /* mm5 = u04 */
509 "psubsw %%mm6, %%mm3 \n\t" /* mm3 = a2 */
510 "paddsw %%mm2, %%mm5 \n\t" /* mm5 = a0 */
512 "paddsw %%mm1, %%mm1 \n\t" /* mm1 = b1 */
513 "psubsw %%mm2, %%mm0 \n\t" /* mm0 = a3 */
515 "paddsw %%mm7, %%mm7 \n\t" /* mm7 = b2 */
516 "movq %%mm3, %%mm2 \n\t" /* mm2 = a2 */
518 "movq %%mm4, %%mm6 \n\t" /* mm6 = a1 */
519 "paddsw %%mm7, %%mm3 \n\t" /* mm3 = a2+b2 */
521 "psraw $" AV_STRINGIFY(COL_SHIFT) ", %%mm3\n\t" /* mm3 = y2 */
522 "paddsw %%mm1, %%mm4\n\t" /* mm4 = a1+b1 */
524 "psraw $" AV_STRINGIFY(COL_SHIFT) ", %%mm4\n\t" /* mm4 = y1 */
525 "psubsw %%mm1, %%mm6 \n\t" /* mm6 = a1-b1 */
527 "movq 5*8*2(%1), %%mm1 \n\t" /* mm1 = b0 */
528 "psubsw %%mm7, %%mm2 \n\t" /* mm2 = a2-b2 */
530 "psraw $" AV_STRINGIFY(COL_SHIFT) ", %%mm6\n\t" /* mm6 = y6 */
531 "movq %%mm5, %%mm7 \n\t" /* mm7 = a0 */
533 "movq %%mm4, 1*8*2(%1)\n\t" /* save y1 */
534 "psraw $" AV_STRINGIFY(COL_SHIFT) ", %%mm2\n\t" /* mm2 = y5 */
536 "movq %%mm3, 2*8*2(%1)\n\t" /* save y2 */
537 "paddsw %%mm1, %%mm5 \n\t" /* mm5 = a0+b0 */
539 "movq 3*8*2(%1), %%mm4 \n\t" /* mm4 = b3 */
540 "psubsw %%mm1, %%mm7 \n\t" /* mm7 = a0-b0 */
542 "psraw $" AV_STRINGIFY(COL_SHIFT) ", %%mm5\n\t" /* mm5 = y0 */
543 "movq %%mm0, %%mm3 \n\t" /* mm3 = a3 */
545 "movq %%mm2, 5*8*2(%1)\n\t" /* save y5 */
546 "psubsw %%mm4, %%mm3 \n\t" /* mm3 = a3-b3 */
548 "psraw $" AV_STRINGIFY(COL_SHIFT) ", %%mm7\n\t" /* mm7 = y7 */
549 "paddsw %%mm0, %%mm4 \n\t" /* mm4 = a3+b3 */
551 "movq %%mm5, 0*8*2(%1)\n\t" /* save y0 */
552 "psraw $" AV_STRINGIFY(COL_SHIFT) ", %%mm3\n\t" /* mm3 = y4 */
554 "movq %%mm6, 6*8*2(%1)\n\t" /* save y6 */
555 "psraw $" AV_STRINGIFY(COL_SHIFT) ", %%mm4\n\t" /* mm4 = y3 */
557 "movq %%mm7, 7*8*2(%1)\n\t" /* save y7 */
559 "movq %%mm3, 4*8*2(%1)\n\t" /* save y4 */
561 "movq %%mm4, 3*8*2(%1)\n\t" /* save y3 */
562 :: "r" (t1_vector), "r" (col+offset)
572 DECLARE_ALIGNED(8, static const int32_t, rounder0)[] =
573 rounder ((1 << (COL_SHIFT - 1)) - 0.5);
574 DECLARE_ALIGNED(8, static const int32_t, rounder4)[] = rounder (0);
575 DECLARE_ALIGNED(8, static const int32_t, rounder1)[] =
576 rounder (1.25683487303); /* C1*(C1/C4+C1+C7)/2 */
577 DECLARE_ALIGNED(8, static const int32_t, rounder7)[] =
578 rounder (-0.25); /* C1*(C7/C4+C7-C1)/2 */
579 DECLARE_ALIGNED(8, static const int32_t, rounder2)[] =
580 rounder (0.60355339059); /* C2 * (C6+C2)/2 */
581 DECLARE_ALIGNED(8, static const int32_t, rounder6)[] =
582 rounder (-0.25); /* C2 * (C6-C2)/2 */
583 DECLARE_ALIGNED(8, static const int32_t, rounder3)[] =
584 rounder (0.087788325588); /* C3*(-C3/C4+C3+C5)/2 */
585 DECLARE_ALIGNED(8, static const int32_t, rounder5)[] =
586 rounder (-0.441341716183); /* C3*(-C5/C4+C5-C3)/2 */
591 #define declare_idct(idct,table,idct_row_head,idct_row,idct_row_tail,idct_row_mid) \
592 void idct (int16_t * const block) \
594 DECLARE_ALIGNED(16, static const int16_t, table04)[] = \
595 table (22725, 21407, 19266, 16384, 12873, 8867, 4520); \
596 DECLARE_ALIGNED(16, static const int16_t, table17)[] = \
597 table (31521, 29692, 26722, 22725, 17855, 12299, 6270); \
598 DECLARE_ALIGNED(16, static const int16_t, table26)[] = \
599 table (29692, 27969, 25172, 21407, 16819, 11585, 5906); \
600 DECLARE_ALIGNED(16, static const int16_t, table35)[] = \
601 table (26722, 25172, 22654, 19266, 15137, 10426, 5315); \
603 idct_row_head (block, 0*8, table04); \
604 idct_row (table04, rounder0); \
605 idct_row_mid (block, 0*8, 4*8, table04); \
606 idct_row (table04, rounder4); \
607 idct_row_mid (block, 4*8, 1*8, table17); \
608 idct_row (table17, rounder1); \
609 idct_row_mid (block, 1*8, 7*8, table17); \
610 idct_row (table17, rounder7); \
611 idct_row_mid (block, 7*8, 2*8, table26); \
612 idct_row (table26, rounder2); \
613 idct_row_mid (block, 2*8, 6*8, table26); \
614 idct_row (table26, rounder6); \
615 idct_row_mid (block, 6*8, 3*8, table35); \
616 idct_row (table35, rounder3); \
617 idct_row_mid (block, 3*8, 5*8, table35); \
618 idct_row (table35, rounder5); \
619 idct_row_tail (block, 5*8); \
621 idct_col (block, 0); \
622 idct_col (block, 4); \
625 declare_idct (ff_mmxext_idct, mmxext_table,
626 mmxext_row_head, mmxext_row, mmxext_row_tail, mmxext_row_mid)
628 declare_idct (ff_mmx_idct, mmx_table,
629 mmx_row_head, mmx_row, mmx_row_tail, mmx_row_mid)