1 /*****************************************************************************
2 * idctmmx.c : MMX IDCT module
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: idctmmx.c,v 1.15 2001/07/17 09:48:07 massiot Exp $
7 * Authors: Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
8 * Michel Lespinasse <walken@zoy.org>
9 * Peter Gubanov <peter@elecard.net.ru>
10 * (from the LiViD project)
11 * Christophe Massiot <massiot@via.ecp.fr>
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
26 *****************************************************************************/
28 #define MODULE_NAME idctmmx
30 /*****************************************************************************
32 *****************************************************************************/
41 #include "tests.h" /* TestCPU() */
44 #include "video_output.h"
47 #include "modules_inner.h"
49 #include "vdec_ext-plugins.h"
51 #include "vdec_block.h"
52 #include "vdec_idct.h"
54 #include "attributes.h"
57 #include "modules_export.h"
59 /*****************************************************************************
61 *****************************************************************************/
62 static void idct_getfunctions( function_list_t * p_function_list );
63 static int idct_Probe ( probedata_t *p_data );
64 static void vdec_NormScan ( u8 ppi_scan[2][64] );
66 /*****************************************************************************
67 * Build configuration tree.
68 *****************************************************************************/
70 ADD_WINDOW( "Configuration for MMX IDCT module" )
71 ADD_COMMENT( "Ha, ha -- nothing to configure yet" )
75 p_module->i_capabilities = MODULE_CAPABILITY_NULL
76 | MODULE_CAPABILITY_IDCT;
77 p_module->psz_longname = "MMX IDCT module";
81 idct_getfunctions( &p_module->p_functions->idct );
84 MODULE_DEACTIVATE_START
85 MODULE_DEACTIVATE_STOP
87 /* Following functions are local */
89 /*****************************************************************************
90 * Functions exported as capabilities.
91 *****************************************************************************/
92 static void idct_getfunctions( function_list_t * p_function_list )
94 p_function_list->pf_probe = idct_Probe;
95 #define F p_function_list->functions.idct
96 F.pf_idct_init = _M( vdec_InitIDCT );
97 F.pf_sparse_idct = _M( vdec_SparseIDCT );
98 F.pf_idct = _M( vdec_IDCT );
99 F.pf_norm_scan = vdec_NormScan;
100 F.pf_decode_init = _M( vdec_InitDecode );
101 F.pf_decode_mb_c = _M( vdec_DecodeMacroblockC );
102 F.pf_decode_mb_bw = _M( vdec_DecodeMacroblockBW );
106 /*****************************************************************************
107 * idct_Probe: return a preference score
108 *****************************************************************************/
109 static int idct_Probe( probedata_t *p_data )
111 if( !TestCPU( CPU_CAPABILITY_MMX ) )
116 if( TestMethod( IDCT_METHOD_VAR, "idctmmx" )
117 || TestMethod( IDCT_METHOD_VAR, "mmx" ) )
125 /*****************************************************************************
126 * vdec_NormScan : This IDCT uses reordered coeffs, so we patch the scan table
127 *****************************************************************************/
128 static void vdec_NormScan( u8 ppi_scan[2][64] )
132 for( i = 0; i < 64; i++ )
135 ppi_scan[0][i] = (j & 0x38) | ((j & 6) >> 1) | ((j & 1) << 2);
138 ppi_scan[1][i] = (j & 0x38) | ((j & 6) >> 1) | ((j & 1) << 2);
142 /*****************************************************************************
144 *****************************************************************************/
148 #define round(bias) ((int)(((bias)+0.5) * (1<<ROW_SHIFT)))
149 #define rounder(bias) {round (bias), round (bias)}
151 #define table(c1,c2,c3,c4,c5,c6,c7) { c4, c2, c4, c6, \
160 static __inline__ void RowHead( dctelem_t * row, int offset, dctelem_t * table )
162 movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
164 movq_m2r (*(row+offset+4), mm5); // mm5 = x7 x5 x3 x1
165 movq_r2r (mm2, mm0); // mm0 = x6 x4 x2 x0
167 movq_m2r (*table, mm3); // mm3 = C6 C4 C2 C4
168 movq_r2r (mm5, mm6); // mm6 = x7 x5 x3 x1
170 punpckldq_r2r (mm0, mm0); // mm0 = x2 x0 x2 x0
172 movq_m2r (*(table+4), mm4); // mm4 = -C2 -C4 C6 C4
173 pmaddwd_r2r (mm0, mm3); // mm3 = C4*x0+C6*x2 C4*x0+C2*x2
175 movq_m2r (*(table+8), mm1); // mm1 = -C7 C3 C3 C1
176 punpckhdq_r2r (mm2, mm2); // mm2 = x6 x4 x6 x4
179 static __inline__ void Row( dctelem_t * table, s32 * rounder )
181 pmaddwd_r2r (mm2, mm4); // mm4 = -C4*x4-C2*x6 C4*x4+C6*x6
182 punpckldq_r2r (mm5, mm5); // mm5 = x3 x1 x3 x1
184 pmaddwd_m2r (*(table+16), mm0); // mm0 = C4*x0-C2*x2 C4*x0-C6*x2
185 punpckhdq_r2r (mm6, mm6); // mm6 = x7 x5 x7 x5
187 movq_m2r (*(table+12), mm7); // mm7 = -C5 -C1 C7 C5
188 pmaddwd_r2r (mm5, mm1); // mm1 = C3*x1-C7*x3 C1*x1+C3*x3
190 paddd_m2r (*rounder, mm3); // mm3 += rounder
191 pmaddwd_r2r (mm6, mm7); // mm7 = -C1*x5-C5*x7 C5*x5+C7*x7
193 pmaddwd_m2r (*(table+20), mm2); // mm2 = C4*x4-C6*x6 -C4*x4+C2*x6
194 paddd_r2r (mm4, mm3); // mm3 = a1 a0 + rounder
196 pmaddwd_m2r (*(table+24), mm5); // mm5 = C7*x1-C5*x3 C5*x1-C1*x3
197 movq_r2r (mm3, mm4); // mm4 = a1 a0 + rounder
199 pmaddwd_m2r (*(table+28), mm6); // mm6 = C3*x5-C1*x7 C7*x5+C3*x7
200 paddd_r2r (mm7, mm1); // mm1 = b1 b0
202 paddd_m2r (*rounder, mm0); // mm0 += rounder
203 psubd_r2r (mm1, mm3); // mm3 = a1-b1 a0-b0 + rounder
205 psrad_i2r (ROW_SHIFT, mm3); // mm3 = y6 y7
206 paddd_r2r (mm4, mm1); // mm1 = a1+b1 a0+b0 + rounder
208 paddd_r2r (mm2, mm0); // mm0 = a3 a2 + rounder
209 psrad_i2r (ROW_SHIFT, mm1); // mm1 = y1 y0
211 paddd_r2r (mm6, mm5); // mm5 = b3 b2
212 movq_r2r (mm0, mm7); // mm7 = a3 a2 + rounder
214 paddd_r2r (mm5, mm0); // mm0 = a3+b3 a2+b2 + rounder
215 psubd_r2r (mm5, mm7); // mm7 = a3-b3 a2-b2 + rounder
218 static __inline__ void RowTail( dctelem_t * row, int store )
220 psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
222 psrad_i2r (ROW_SHIFT, mm7); // mm7 = y4 y5
224 packssdw_r2r (mm0, mm1); // mm1 = y3 y2 y1 y0
226 packssdw_r2r (mm3, mm7); // mm7 = y6 y7 y4 y5
228 movq_r2m (mm1, *(row+store)); // save y3 y2 y1 y0
229 movq_r2r (mm7, mm4); // mm4 = y6 y7 y4 y5
231 pslld_i2r (16, mm7); // mm7 = y7 0 y5 0
233 psrld_i2r (16, mm4); // mm4 = 0 y6 0 y4
235 por_r2r (mm4, mm7); // mm7 = y7 y6 y5 y4
239 movq_r2m (mm7, *(row+store+4)); // save y7 y6 y5 y4
242 static __inline__ void RowMid( dctelem_t * row, int store,
243 int offset, dctelem_t * table )
245 movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
246 psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
248 movq_m2r (*(row+offset+4), mm5); // mm5 = x7 x5 x3 x1
249 psrad_i2r (ROW_SHIFT, mm7); // mm7 = y4 y5
251 packssdw_r2r (mm0, mm1); // mm1 = y3 y2 y1 y0
252 movq_r2r (mm5, mm6); // mm6 = x7 x5 x3 x1
254 packssdw_r2r (mm3, mm7); // mm7 = y6 y7 y4 y5
255 movq_r2r (mm2, mm0); // mm0 = x6 x4 x2 x0
257 movq_r2m (mm1, *(row+store)); // save y3 y2 y1 y0
258 movq_r2r (mm7, mm1); // mm1 = y6 y7 y4 y5
260 punpckldq_r2r (mm0, mm0); // mm0 = x2 x0 x2 x0
261 psrld_i2r (16, mm7); // mm7 = 0 y6 0 y4
263 movq_m2r (*table, mm3); // mm3 = C6 C4 C2 C4
264 pslld_i2r (16, mm1); // mm1 = y7 0 y5 0
266 movq_m2r (*(table+4), mm4); // mm4 = -C2 -C4 C6 C4
267 por_r2r (mm1, mm7); // mm7 = y7 y6 y5 y4
269 movq_m2r (*(table+8), mm1); // mm1 = -C7 C3 C3 C1
270 punpckhdq_r2r (mm2, mm2); // mm2 = x6 x4 x6 x4
272 movq_r2m (mm7, *(row+store+4)); // save y7 y6 y5 y4
273 pmaddwd_r2r (mm0, mm3); // mm3 = C4*x0+C6*x2 C4*x0+C2*x2
276 static __inline__ void Col( dctelem_t * col, int offset )
283 static short _T1[] ATTR_ALIGN(8) = {T1,T1,T1,T1};
284 static short _T2[] ATTR_ALIGN(8) = {T2,T2,T2,T2};
285 static short _T3[] ATTR_ALIGN(8) = {T3,T3,T3,T3};
286 static short _C4[] ATTR_ALIGN(8) = {C4,C4,C4,C4};
287 static mmx_t scratch0, scratch1;
289 /* column code adapted from peter gubanov */
290 /* http://www.elecard.com/peter/idct.shtml */
292 movq_m2r (*_T1, mm0); // mm0 = T1
294 movq_m2r (*(col+offset+1*8), mm1); // mm1 = x1
295 movq_r2r (mm0, mm2); // mm2 = T1
297 movq_m2r (*(col+offset+7*8), mm4); // mm4 = x7
298 pmulhw_r2r (mm1, mm0); // mm0 = T1*x1
300 movq_m2r (*_T3, mm5); // mm5 = T3
301 pmulhw_r2r (mm4, mm2); // mm2 = T1*x7
303 movq_m2r (*(col+offset+5*8), mm6); // mm6 = x5
304 movq_r2r (mm5, mm7); // mm7 = T3-1
306 movq_m2r (*(col+offset+3*8), mm3); // mm3 = x3
307 psubsw_r2r (mm4, mm0); // mm0 = v17
309 movq_m2r (*_T2, mm4); // mm4 = T2
310 pmulhw_r2r (mm3, mm5); // mm5 = (T3-1)*x3
312 paddsw_r2r (mm2, mm1); // mm1 = u17
313 pmulhw_r2r (mm6, mm7); // mm7 = (T3-1)*x5
317 movq_r2r (mm4, mm2); // mm2 = T2
318 paddsw_r2r (mm3, mm5); // mm5 = T3*x3
320 pmulhw_m2r (*(col+offset+2*8), mm4);// mm4 = T2*x2
321 paddsw_r2r (mm6, mm7); // mm7 = T3*x5
323 psubsw_r2r (mm6, mm5); // mm5 = v35
324 paddsw_r2r (mm3, mm7); // mm7 = u35
326 movq_m2r (*(col+offset+6*8), mm3); // mm3 = x6
327 movq_r2r (mm0, mm6); // mm6 = v17
329 pmulhw_r2r (mm3, mm2); // mm2 = T2*x6
330 psubsw_r2r (mm5, mm0); // mm0 = b3
332 psubsw_r2r (mm3, mm4); // mm4 = v26
333 paddsw_r2r (mm6, mm5); // mm5 = v12
335 movq_r2m (mm0, scratch0); // save b3
336 movq_r2r (mm1, mm6); // mm6 = u17
338 paddsw_m2r (*(col+offset+2*8), mm2);// mm2 = u26
339 paddsw_r2r (mm7, mm6); // mm6 = b0
341 psubsw_r2r (mm7, mm1); // mm1 = u12
342 movq_r2r (mm1, mm7); // mm7 = u12
344 movq_m2r (*(col+offset+0*8), mm3); // mm3 = x0
345 paddsw_r2r (mm5, mm1); // mm1 = u12+v12
347 movq_m2r (*_C4, mm0); // mm0 = C4/2
348 psubsw_r2r (mm5, mm7); // mm7 = u12-v12
350 movq_r2m (mm6, scratch1); // save b0
351 pmulhw_r2r (mm0, mm1); // mm1 = b1/2
353 movq_r2r (mm4, mm6); // mm6 = v26
354 pmulhw_r2r (mm0, mm7); // mm7 = b2/2
356 movq_m2r (*(col+offset+4*8), mm5); // mm5 = x4
357 movq_r2r (mm3, mm0); // mm0 = x0
359 psubsw_r2r (mm5, mm3); // mm3 = v04
360 paddsw_r2r (mm5, mm0); // mm0 = u04
362 paddsw_r2r (mm3, mm4); // mm4 = a1
363 movq_r2r (mm0, mm5); // mm5 = u04
365 psubsw_r2r (mm6, mm3); // mm3 = a2
366 paddsw_r2r (mm2, mm5); // mm5 = a0
368 paddsw_r2r (mm1, mm1); // mm1 = b1
369 psubsw_r2r (mm2, mm0); // mm0 = a3
371 paddsw_r2r (mm7, mm7); // mm7 = b2
372 movq_r2r (mm3, mm2); // mm2 = a2
374 movq_r2r (mm4, mm6); // mm6 = a1
375 paddsw_r2r (mm7, mm3); // mm3 = a2+b2
377 psraw_i2r (COL_SHIFT, mm3); // mm3 = y2
378 paddsw_r2r (mm1, mm4); // mm4 = a1+b1
380 psraw_i2r (COL_SHIFT, mm4); // mm4 = y1
381 psubsw_r2r (mm1, mm6); // mm6 = a1-b1
383 movq_m2r (scratch1, mm1); // mm1 = b0
384 psubsw_r2r (mm7, mm2); // mm2 = a2-b2
386 psraw_i2r (COL_SHIFT, mm6); // mm6 = y6
387 movq_r2r (mm5, mm7); // mm7 = a0
389 movq_r2m (mm4, *(col+offset+1*8)); // save y1
390 psraw_i2r (COL_SHIFT, mm2); // mm2 = y5
392 movq_r2m (mm3, *(col+offset+2*8)); // save y2
393 paddsw_r2r (mm1, mm5); // mm5 = a0+b0
395 movq_m2r (scratch0, mm4); // mm4 = b3
396 psubsw_r2r (mm1, mm7); // mm7 = a0-b0
398 psraw_i2r (COL_SHIFT, mm5); // mm5 = y0
399 movq_r2r (mm0, mm3); // mm3 = a3
401 movq_r2m (mm2, *(col+offset+5*8)); // save y5
402 psubsw_r2r (mm4, mm3); // mm3 = a3-b3
404 psraw_i2r (COL_SHIFT, mm7); // mm7 = y7
405 paddsw_r2r (mm0, mm4); // mm4 = a3+b3
407 movq_r2m (mm5, *(col+offset+0*8)); // save y0
408 psraw_i2r (COL_SHIFT, mm3); // mm3 = y4
410 movq_r2m (mm6, *(col+offset+6*8)); // save y6
411 psraw_i2r (COL_SHIFT, mm4); // mm4 = y3
413 movq_r2m (mm7, *(col+offset+7*8)); // save y7
415 movq_r2m (mm3, *(col+offset+4*8)); // save y4
417 movq_r2m (mm4, *(col+offset+3*8)); // save y3
421 static s32 rounder0[] ATTR_ALIGN(8) =
422 rounder ((1 << (COL_SHIFT - 1)) - 0.5);
423 static s32 rounder4[] ATTR_ALIGN(8) = rounder (0);
424 static s32 rounder1[] ATTR_ALIGN(8) =
425 rounder (1.25683487303); // C1*(C1/C4+C1+C7)/2
426 static s32 rounder7[] ATTR_ALIGN(8) =
427 rounder (-0.25); // C1*(C7/C4+C7-C1)/2
428 static s32 rounder2[] ATTR_ALIGN(8) =
429 rounder (0.60355339059); // C2 * (C6+C2)/2
430 static s32 rounder6[] ATTR_ALIGN(8) =
431 rounder (-0.25); // C2 * (C6-C2)/2
432 static s32 rounder3[] ATTR_ALIGN(8) =
433 rounder (0.087788325588); // C3*(-C3/C4+C3+C5)/2
434 static s32 rounder5[] ATTR_ALIGN(8) =
435 rounder (-0.441341716183); // C3*(-C5/C4+C5-C3)/2
437 void _M( vdec_IDCT )( void * p_idct_data, dctelem_t * p_block, int i_idontcare )
439 static dctelem_t table04[] ATTR_ALIGN(16) =
440 table (22725, 21407, 19266, 16384, 12873, 8867, 4520);
441 static dctelem_t table17[] ATTR_ALIGN(16) =
442 table (31521, 29692, 26722, 22725, 17855, 12299, 6270);
443 static dctelem_t table26[] ATTR_ALIGN(16) =
444 table (29692, 27969, 25172, 21407, 16819, 11585, 5906);
445 static dctelem_t table35[] ATTR_ALIGN(16) =
446 table (26722, 25172, 22654, 19266, 15137, 10426, 5315);
448 RowHead( p_block, 0*8, table04 );
449 Row( table04, rounder0 );
450 RowMid( p_block, 0*8, 4*8, table04 );
451 Row( table04, rounder4 );
452 RowMid( p_block, 4*8, 1*8, table17 );
453 Row( table17, rounder1 );
454 RowMid( p_block, 1*8, 7*8, table17 );
455 Row( table17, rounder7 );
456 RowMid( p_block, 7*8, 2*8, table26 );
457 Row( table26, rounder2 );
458 RowMid( p_block, 2*8, 6*8, table26 );
459 Row( table26, rounder6 );
460 RowMid( p_block, 6*8, 3*8, table35 );
461 Row( table35, rounder3 );
462 RowMid( p_block, 3*8, 5*8, table35 );
463 Row( table35, rounder5 );
464 RowTail( p_block, 5*8);