1 /*****************************************************************************
2 * idctmmxext.c : MMX EXT IDCT module
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: idctmmxext.c,v 1.12 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 idctmmxext
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 EXT 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 EXT 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_MMXEXT ) )
116 if( TestMethod( IDCT_METHOD_VAR, "idctmmxext" )
117 || TestMethod( IDCT_METHOD_VAR, "mmxext" ) )
126 /*****************************************************************************
127 * vdec_NormScan : This IDCT uses reordered coeffs, so we patch the scan table
128 *****************************************************************************/
129 static void vdec_NormScan( u8 ppi_scan[2][64] )
133 for( i = 0; i < 64; i++ )
136 ppi_scan[0][i] = (j & 0x38) | ((j & 6) >> 1) | ((j & 1) << 2);
139 ppi_scan[1][i] = (j & 0x38) | ((j & 6) >> 1) | ((j & 1) << 2);
143 /*****************************************************************************
145 *****************************************************************************/
149 #define round(bias) ((int)(((bias)+0.5) * (1<<ROW_SHIFT)))
150 #define rounder(bias) {round (bias), round (bias)}
152 #define table(c1,c2,c3,c4,c5,c6,c7) { c4, c2, -c4, -c2, \
161 static __inline__ void RowHead( dctelem_t * row, int offset, dctelem_t * table )
163 movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
165 movq_m2r (*(row+offset+4), mm5); // mm5 = x7 x5 x3 x1
166 movq_r2r (mm2, mm0); // mm0 = x6 x4 x2 x0
168 movq_m2r (*table, mm3); // mm3 = -C2 -C4 C2 C4
169 movq_r2r (mm5, mm6); // mm6 = x7 x5 x3 x1
171 movq_m2r (*(table+4), mm4); // mm4 = C6 C4 C6 C4
172 pmaddwd_r2r (mm0, mm3); // mm3 = -C4*x4-C2*x6 C4*x0+C2*x2
174 pshufw_r2r (mm2, mm2, 0x4e); // mm2 = x2 x0 x6 x4
177 static __inline__ void Row( dctelem_t * table, s32 * rounder )
179 movq_m2r (*(table+8), mm1); // mm1 = -C5 -C1 C3 C1
180 pmaddwd_r2r (mm2, mm4); // mm4 = C4*x0+C6*x2 C4*x4+C6*x6
182 pmaddwd_m2r (*(table+16), mm0); // mm0 = C4*x4-C6*x6 C4*x0-C6*x2
183 pshufw_r2r (mm6, mm6, 0x4e); // mm6 = x3 x1 x7 x5
185 movq_m2r (*(table+12), mm7); // mm7 = -C7 C3 C7 C5
186 pmaddwd_r2r (mm5, mm1); // mm1 = -C1*x5-C5*x7 C1*x1+C3*x3
188 paddd_m2r (*rounder, mm3); // mm3 += rounder
189 pmaddwd_r2r (mm6, mm7); // mm7 = C3*x1-C7*x3 C5*x5+C7*x7
191 pmaddwd_m2r (*(table+20), mm2); // mm2 = C4*x0-C2*x2 -C4*x4+C2*x6
192 paddd_r2r (mm4, mm3); // mm3 = a1 a0 + rounder
194 pmaddwd_m2r (*(table+24), mm5); // mm5 = C3*x5-C1*x7 C5*x1-C1*x3
195 movq_r2r (mm3, mm4); // mm4 = a1 a0 + rounder
197 pmaddwd_m2r (*(table+28), mm6); // mm6 = C7*x1-C5*x3 C7*x5+C3*x7
198 paddd_r2r (mm7, mm1); // mm1 = b1 b0
200 paddd_m2r (*rounder, mm0); // mm0 += rounder
201 psubd_r2r (mm1, mm3); // mm3 = a1-b1 a0-b0 + rounder
203 psrad_i2r (ROW_SHIFT, mm3); // mm3 = y6 y7
204 paddd_r2r (mm4, mm1); // mm1 = a1+b1 a0+b0 + rounder
206 paddd_r2r (mm2, mm0); // mm0 = a3 a2 + rounder
207 psrad_i2r (ROW_SHIFT, mm1); // mm1 = y1 y0
209 paddd_r2r (mm6, mm5); // mm5 = b3 b2
210 movq_r2r (mm0, mm4); // mm4 = a3 a2 + rounder
212 paddd_r2r (mm5, mm0); // mm0 = a3+b3 a2+b2 + rounder
213 psubd_r2r (mm5, mm4); // mm4 = a3-b3 a2-b2 + rounder
216 static __inline__ void RowTail( dctelem_t * row, int store )
218 psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
220 psrad_i2r (ROW_SHIFT, mm4); // mm4 = y4 y5
222 packssdw_r2r (mm0, mm1); // mm1 = y3 y2 y1 y0
224 packssdw_r2r (mm3, mm4); // mm4 = y6 y7 y4 y5
226 movq_r2m (mm1, *(row+store)); // save y3 y2 y1 y0
227 pshufw_r2r (mm4, mm4, 0xb1); // mm4 = y7 y6 y5 y4
230 movq_r2m (mm4, *(row+store+4)); // save y7 y6 y5 y4
233 static __inline__ void RowMid( dctelem_t * row, int store,
234 int offset, dctelem_t * table)
236 movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
237 psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
239 movq_m2r (*(row+offset+4), mm5); // mm5 = x7 x5 x3 x1
240 psrad_i2r (ROW_SHIFT, mm4); // mm4 = y4 y5
242 packssdw_r2r (mm0, mm1); // mm1 = y3 y2 y1 y0
243 movq_r2r (mm5, mm6); // mm6 = x7 x5 x3 x1
245 packssdw_r2r (mm3, mm4); // mm4 = y6 y7 y4 y5
246 movq_r2r (mm2, mm0); // mm0 = x6 x4 x2 x0
248 movq_r2m (mm1, *(row+store)); // save y3 y2 y1 y0
249 pshufw_r2r (mm4, mm4, 0xb1); // mm4 = y7 y6 y5 y4
251 movq_m2r (*table, mm3); // mm3 = -C2 -C4 C2 C4
252 movq_r2m (mm4, *(row+store+4)); // save y7 y6 y5 y4
254 pmaddwd_r2r (mm0, mm3); // mm3 = -C4*x4-C2*x6 C4*x0+C2*x2
256 movq_m2r (*(table+4), mm4); // mm4 = C6 C4 C6 C4
257 pshufw_r2r (mm2, mm2, 0x4e); // mm2 = x2 x0 x6 x4
260 static __inline__ void Col( dctelem_t * col, int offset )
267 static short _T1[] ATTR_ALIGN(8) = {T1,T1,T1,T1};
268 static short _T2[] ATTR_ALIGN(8) = {T2,T2,T2,T2};
269 static short _T3[] ATTR_ALIGN(8) = {T3,T3,T3,T3};
270 static short _C4[] ATTR_ALIGN(8) = {C4,C4,C4,C4};
271 static mmx_t scratch0, scratch1;
273 /* column code adapted from peter gubanov */
274 /* http://www.elecard.com/peter/idct.shtml */
276 movq_m2r (*_T1, mm0); // mm0 = T1
278 movq_m2r (*(col+offset+1*8), mm1); // mm1 = x1
279 movq_r2r (mm0, mm2); // mm2 = T1
281 movq_m2r (*(col+offset+7*8), mm4); // mm4 = x7
282 pmulhw_r2r (mm1, mm0); // mm0 = T1*x1
284 movq_m2r (*_T3, mm5); // mm5 = T3
285 pmulhw_r2r (mm4, mm2); // mm2 = T1*x7
287 movq_m2r (*(col+offset+5*8), mm6); // mm6 = x5
288 movq_r2r (mm5, mm7); // mm7 = T3-1
290 movq_m2r (*(col+offset+3*8), mm3); // mm3 = x3
291 psubsw_r2r (mm4, mm0); // mm0 = v17
293 movq_m2r (*_T2, mm4); // mm4 = T2
294 pmulhw_r2r (mm3, mm5); // mm5 = (T3-1)*x3
296 paddsw_r2r (mm2, mm1); // mm1 = u17
297 pmulhw_r2r (mm6, mm7); // mm7 = (T3-1)*x5
301 movq_r2r (mm4, mm2); // mm2 = T2
302 paddsw_r2r (mm3, mm5); // mm5 = T3*x3
304 pmulhw_m2r (*(col+offset+2*8), mm4);// mm4 = T2*x2
305 paddsw_r2r (mm6, mm7); // mm7 = T3*x5
307 psubsw_r2r (mm6, mm5); // mm5 = v35
308 paddsw_r2r (mm3, mm7); // mm7 = u35
310 movq_m2r (*(col+offset+6*8), mm3); // mm3 = x6
311 movq_r2r (mm0, mm6); // mm6 = v17
313 pmulhw_r2r (mm3, mm2); // mm2 = T2*x6
314 psubsw_r2r (mm5, mm0); // mm0 = b3
316 psubsw_r2r (mm3, mm4); // mm4 = v26
317 paddsw_r2r (mm6, mm5); // mm5 = v12
319 movq_r2m (mm0, scratch0); // save b3
320 movq_r2r (mm1, mm6); // mm6 = u17
322 paddsw_m2r (*(col+offset+2*8), mm2);// mm2 = u26
323 paddsw_r2r (mm7, mm6); // mm6 = b0
325 psubsw_r2r (mm7, mm1); // mm1 = u12
326 movq_r2r (mm1, mm7); // mm7 = u12
328 movq_m2r (*(col+offset+0*8), mm3); // mm3 = x0
329 paddsw_r2r (mm5, mm1); // mm1 = u12+v12
331 movq_m2r (*_C4, mm0); // mm0 = C4/2
332 psubsw_r2r (mm5, mm7); // mm7 = u12-v12
334 movq_r2m (mm6, scratch1); // save b0
335 pmulhw_r2r (mm0, mm1); // mm1 = b1/2
337 movq_r2r (mm4, mm6); // mm6 = v26
338 pmulhw_r2r (mm0, mm7); // mm7 = b2/2
340 movq_m2r (*(col+offset+4*8), mm5); // mm5 = x4
341 movq_r2r (mm3, mm0); // mm0 = x0
343 psubsw_r2r (mm5, mm3); // mm3 = v04
344 paddsw_r2r (mm5, mm0); // mm0 = u04
346 paddsw_r2r (mm3, mm4); // mm4 = a1
347 movq_r2r (mm0, mm5); // mm5 = u04
349 psubsw_r2r (mm6, mm3); // mm3 = a2
350 paddsw_r2r (mm2, mm5); // mm5 = a0
352 paddsw_r2r (mm1, mm1); // mm1 = b1
353 psubsw_r2r (mm2, mm0); // mm0 = a3
355 paddsw_r2r (mm7, mm7); // mm7 = b2
356 movq_r2r (mm3, mm2); // mm2 = a2
358 movq_r2r (mm4, mm6); // mm6 = a1
359 paddsw_r2r (mm7, mm3); // mm3 = a2+b2
361 psraw_i2r (COL_SHIFT, mm3); // mm3 = y2
362 paddsw_r2r (mm1, mm4); // mm4 = a1+b1
364 psraw_i2r (COL_SHIFT, mm4); // mm4 = y1
365 psubsw_r2r (mm1, mm6); // mm6 = a1-b1
367 movq_m2r (scratch1, mm1); // mm1 = b0
368 psubsw_r2r (mm7, mm2); // mm2 = a2-b2
370 psraw_i2r (COL_SHIFT, mm6); // mm6 = y6
371 movq_r2r (mm5, mm7); // mm7 = a0
373 movq_r2m (mm4, *(col+offset+1*8)); // save y1
374 psraw_i2r (COL_SHIFT, mm2); // mm2 = y5
376 movq_r2m (mm3, *(col+offset+2*8)); // save y2
377 paddsw_r2r (mm1, mm5); // mm5 = a0+b0
379 movq_m2r (scratch0, mm4); // mm4 = b3
380 psubsw_r2r (mm1, mm7); // mm7 = a0-b0
382 psraw_i2r (COL_SHIFT, mm5); // mm5 = y0
383 movq_r2r (mm0, mm3); // mm3 = a3
385 movq_r2m (mm2, *(col+offset+5*8)); // save y5
386 psubsw_r2r (mm4, mm3); // mm3 = a3-b3
388 psraw_i2r (COL_SHIFT, mm7); // mm7 = y7
389 paddsw_r2r (mm0, mm4); // mm4 = a3+b3
391 movq_r2m (mm5, *(col+offset+0*8)); // save y0
392 psraw_i2r (COL_SHIFT, mm3); // mm3 = y4
394 movq_r2m (mm6, *(col+offset+6*8)); // save y6
395 psraw_i2r (COL_SHIFT, mm4); // mm4 = y3
397 movq_r2m (mm7, *(col+offset+7*8)); // save y7
399 movq_r2m (mm3, *(col+offset+4*8)); // save y4
401 movq_r2m (mm4, *(col+offset+3*8)); // save y3
405 static s32 rounder0[] ATTR_ALIGN(8) =
406 rounder ((1 << (COL_SHIFT - 1)) - 0.5);
407 static s32 rounder4[] ATTR_ALIGN(8) = rounder (0);
408 static s32 rounder1[] ATTR_ALIGN(8) =
409 rounder (1.25683487303); // C1*(C1/C4+C1+C7)/2
410 static s32 rounder7[] ATTR_ALIGN(8) =
411 rounder (-0.25); // C1*(C7/C4+C7-C1)/2
412 static s32 rounder2[] ATTR_ALIGN(8) =
413 rounder (0.60355339059); // C2 * (C6+C2)/2
414 static s32 rounder6[] ATTR_ALIGN(8) =
415 rounder (-0.25); // C2 * (C6-C2)/2
416 static s32 rounder3[] ATTR_ALIGN(8) =
417 rounder (0.087788325588); // C3*(-C3/C4+C3+C5)/2
418 static s32 rounder5[] ATTR_ALIGN(8) =
419 rounder (-0.441341716183); // C3*(-C5/C4+C5-C3)/2
421 void _M( vdec_IDCT )( void * p_idct_data, dctelem_t * p_block, int i_idontcare )
423 static dctelem_t table04[] ATTR_ALIGN(16) =
424 table (22725, 21407, 19266, 16384, 12873, 8867, 4520);
425 static dctelem_t table17[] ATTR_ALIGN(16) =
426 table (31521, 29692, 26722, 22725, 17855, 12299, 6270);
427 static dctelem_t table26[] ATTR_ALIGN(16) =
428 table (29692, 27969, 25172, 21407, 16819, 11585, 5906);
429 static dctelem_t table35[] ATTR_ALIGN(16) =
430 table (26722, 25172, 22654, 19266, 15137, 10426, 5315);
432 RowHead( p_block, 0*8, table04 );
433 Row( table04, rounder0 );
434 RowMid( p_block, 0*8, 4*8, table04 );
435 Row( table04, rounder4 );
436 RowMid( p_block, 4*8, 1*8, table17 );
437 Row( table17, rounder1 );
438 RowMid( p_block, 1*8, 7*8, table17 );
439 Row( table17, rounder7 );
440 RowMid( p_block, 7*8, 2*8, table26 );
441 Row( table26, rounder2 );
442 RowMid( p_block, 2*8, 6*8, table26 );
443 Row( table26, rounder6 );
444 RowMid( p_block, 6*8, 3*8, table35 );
445 Row( table35, rounder3 );
446 RowMid( p_block, 3*8, 5*8, table35 );
447 Row( table35, rounder5 );
448 RowTail( p_block, 5*8);