1 /*****************************************************************************
2 * idctmmxext.c : MMX EXT IDCT module
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: idctmmxext.c,v 1.9 2001/05/30 17:03:12 sam 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"
46 #include "video_decoder.h"
49 #include "modules_inner.h"
51 #include "vdec_block.h"
52 #include "vdec_idct.h"
54 #include "attributes.h"
57 /*****************************************************************************
59 *****************************************************************************/
60 static void idct_getfunctions( function_list_t * p_function_list );
61 static int idct_Probe ( probedata_t *p_data );
62 static void vdec_NormScan ( u8 ppi_scan[2][64] );
64 /*****************************************************************************
65 * Build configuration tree.
66 *****************************************************************************/
68 ADD_WINDOW( "Configuration for MMX EXT IDCT module" )
69 ADD_COMMENT( "Ha, ha -- nothing to configure yet" )
73 p_module->i_capabilities = MODULE_CAPABILITY_NULL
74 | MODULE_CAPABILITY_IDCT;
75 p_module->psz_longname = "MMX EXT IDCT module";
79 idct_getfunctions( &p_module->p_functions->idct );
82 MODULE_DEACTIVATE_START
83 MODULE_DEACTIVATE_STOP
85 /* Following functions are local */
87 /*****************************************************************************
88 * Functions exported as capabilities.
89 *****************************************************************************/
90 static void idct_getfunctions( function_list_t * p_function_list )
92 p_function_list->pf_probe = idct_Probe;
93 #define F p_function_list->functions.idct
94 F.pf_idct_init = _M( vdec_InitIDCT );
95 F.pf_sparse_idct = _M( vdec_SparseIDCT );
96 F.pf_idct = _M( vdec_IDCT );
97 F.pf_norm_scan = vdec_NormScan;
98 F.pf_decode_init = _M( vdec_InitDecode );
99 F.pf_decode_mb_c = _M( vdec_DecodeMacroblockC );
100 F.pf_decode_mb_bw = _M( vdec_DecodeMacroblockBW );
104 /*****************************************************************************
105 * idct_Probe: return a preference score
106 *****************************************************************************/
107 static int idct_Probe( probedata_t *p_data )
109 if( !TestCPU( CPU_CAPABILITY_MMXEXT ) )
114 if( TestMethod( IDCT_METHOD_VAR, "idctmmxext" ) )
123 /*****************************************************************************
124 * vdec_NormScan : This IDCT uses reordered coeffs, so we patch the scan table
125 *****************************************************************************/
126 static void vdec_NormScan( u8 ppi_scan[2][64] )
130 for( i = 0; i < 64; i++ )
133 ppi_scan[0][i] = (j & 0x38) | ((j & 6) >> 1) | ((j & 1) << 2);
136 ppi_scan[1][i] = (j & 0x38) | ((j & 6) >> 1) | ((j & 1) << 2);
140 /*****************************************************************************
142 *****************************************************************************/
146 #define round(bias) ((int)(((bias)+0.5) * (1<<ROW_SHIFT)))
147 #define rounder(bias) {round (bias), round (bias)}
149 #define table(c1,c2,c3,c4,c5,c6,c7) { c4, c2, -c4, -c2, \
158 static __inline__ void RowHead( dctelem_t * row, int offset, dctelem_t * table )
160 movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
162 movq_m2r (*(row+offset+4), mm5); // mm5 = x7 x5 x3 x1
163 movq_r2r (mm2, mm0); // mm0 = x6 x4 x2 x0
165 movq_m2r (*table, mm3); // mm3 = -C2 -C4 C2 C4
166 movq_r2r (mm5, mm6); // mm6 = x7 x5 x3 x1
168 movq_m2r (*(table+4), mm4); // mm4 = C6 C4 C6 C4
169 pmaddwd_r2r (mm0, mm3); // mm3 = -C4*x4-C2*x6 C4*x0+C2*x2
171 pshufw_r2r (mm2, mm2, 0x4e); // mm2 = x2 x0 x6 x4
174 static __inline__ void Row( dctelem_t * table, s32 * rounder )
176 movq_m2r (*(table+8), mm1); // mm1 = -C5 -C1 C3 C1
177 pmaddwd_r2r (mm2, mm4); // mm4 = C4*x0+C6*x2 C4*x4+C6*x6
179 pmaddwd_m2r (*(table+16), mm0); // mm0 = C4*x4-C6*x6 C4*x0-C6*x2
180 pshufw_r2r (mm6, mm6, 0x4e); // mm6 = x3 x1 x7 x5
182 movq_m2r (*(table+12), mm7); // mm7 = -C7 C3 C7 C5
183 pmaddwd_r2r (mm5, mm1); // mm1 = -C1*x5-C5*x7 C1*x1+C3*x3
185 paddd_m2r (*rounder, mm3); // mm3 += rounder
186 pmaddwd_r2r (mm6, mm7); // mm7 = C3*x1-C7*x3 C5*x5+C7*x7
188 pmaddwd_m2r (*(table+20), mm2); // mm2 = C4*x0-C2*x2 -C4*x4+C2*x6
189 paddd_r2r (mm4, mm3); // mm3 = a1 a0 + rounder
191 pmaddwd_m2r (*(table+24), mm5); // mm5 = C3*x5-C1*x7 C5*x1-C1*x3
192 movq_r2r (mm3, mm4); // mm4 = a1 a0 + rounder
194 pmaddwd_m2r (*(table+28), mm6); // mm6 = C7*x1-C5*x3 C7*x5+C3*x7
195 paddd_r2r (mm7, mm1); // mm1 = b1 b0
197 paddd_m2r (*rounder, mm0); // mm0 += rounder
198 psubd_r2r (mm1, mm3); // mm3 = a1-b1 a0-b0 + rounder
200 psrad_i2r (ROW_SHIFT, mm3); // mm3 = y6 y7
201 paddd_r2r (mm4, mm1); // mm1 = a1+b1 a0+b0 + rounder
203 paddd_r2r (mm2, mm0); // mm0 = a3 a2 + rounder
204 psrad_i2r (ROW_SHIFT, mm1); // mm1 = y1 y0
206 paddd_r2r (mm6, mm5); // mm5 = b3 b2
207 movq_r2r (mm0, mm4); // mm4 = a3 a2 + rounder
209 paddd_r2r (mm5, mm0); // mm0 = a3+b3 a2+b2 + rounder
210 psubd_r2r (mm5, mm4); // mm4 = a3-b3 a2-b2 + rounder
213 static __inline__ void RowTail( dctelem_t * row, int store )
215 psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
217 psrad_i2r (ROW_SHIFT, mm4); // mm4 = y4 y5
219 packssdw_r2r (mm0, mm1); // mm1 = y3 y2 y1 y0
221 packssdw_r2r (mm3, mm4); // mm4 = y6 y7 y4 y5
223 movq_r2m (mm1, *(row+store)); // save y3 y2 y1 y0
224 pshufw_r2r (mm4, mm4, 0xb1); // mm4 = y7 y6 y5 y4
227 movq_r2m (mm4, *(row+store+4)); // save y7 y6 y5 y4
230 static __inline__ void RowMid( dctelem_t * row, int store,
231 int offset, dctelem_t * table)
233 movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
234 psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
236 movq_m2r (*(row+offset+4), mm5); // mm5 = x7 x5 x3 x1
237 psrad_i2r (ROW_SHIFT, mm4); // mm4 = y4 y5
239 packssdw_r2r (mm0, mm1); // mm1 = y3 y2 y1 y0
240 movq_r2r (mm5, mm6); // mm6 = x7 x5 x3 x1
242 packssdw_r2r (mm3, mm4); // mm4 = y6 y7 y4 y5
243 movq_r2r (mm2, mm0); // mm0 = x6 x4 x2 x0
245 movq_r2m (mm1, *(row+store)); // save y3 y2 y1 y0
246 pshufw_r2r (mm4, mm4, 0xb1); // mm4 = y7 y6 y5 y4
248 movq_m2r (*table, mm3); // mm3 = -C2 -C4 C2 C4
249 movq_r2m (mm4, *(row+store+4)); // save y7 y6 y5 y4
251 pmaddwd_r2r (mm0, mm3); // mm3 = -C4*x4-C2*x6 C4*x0+C2*x2
253 movq_m2r (*(table+4), mm4); // mm4 = C6 C4 C6 C4
254 pshufw_r2r (mm2, mm2, 0x4e); // mm2 = x2 x0 x6 x4
257 static __inline__ void Col( dctelem_t * col, int offset )
264 static short _T1[] ATTR_ALIGN(8) = {T1,T1,T1,T1};
265 static short _T2[] ATTR_ALIGN(8) = {T2,T2,T2,T2};
266 static short _T3[] ATTR_ALIGN(8) = {T3,T3,T3,T3};
267 static short _C4[] ATTR_ALIGN(8) = {C4,C4,C4,C4};
268 static mmx_t scratch0, scratch1;
270 /* column code adapted from peter gubanov */
271 /* http://www.elecard.com/peter/idct.shtml */
273 movq_m2r (*_T1, mm0); // mm0 = T1
275 movq_m2r (*(col+offset+1*8), mm1); // mm1 = x1
276 movq_r2r (mm0, mm2); // mm2 = T1
278 movq_m2r (*(col+offset+7*8), mm4); // mm4 = x7
279 pmulhw_r2r (mm1, mm0); // mm0 = T1*x1
281 movq_m2r (*_T3, mm5); // mm5 = T3
282 pmulhw_r2r (mm4, mm2); // mm2 = T1*x7
284 movq_m2r (*(col+offset+5*8), mm6); // mm6 = x5
285 movq_r2r (mm5, mm7); // mm7 = T3-1
287 movq_m2r (*(col+offset+3*8), mm3); // mm3 = x3
288 psubsw_r2r (mm4, mm0); // mm0 = v17
290 movq_m2r (*_T2, mm4); // mm4 = T2
291 pmulhw_r2r (mm3, mm5); // mm5 = (T3-1)*x3
293 paddsw_r2r (mm2, mm1); // mm1 = u17
294 pmulhw_r2r (mm6, mm7); // mm7 = (T3-1)*x5
298 movq_r2r (mm4, mm2); // mm2 = T2
299 paddsw_r2r (mm3, mm5); // mm5 = T3*x3
301 pmulhw_m2r (*(col+offset+2*8), mm4);// mm4 = T2*x2
302 paddsw_r2r (mm6, mm7); // mm7 = T3*x5
304 psubsw_r2r (mm6, mm5); // mm5 = v35
305 paddsw_r2r (mm3, mm7); // mm7 = u35
307 movq_m2r (*(col+offset+6*8), mm3); // mm3 = x6
308 movq_r2r (mm0, mm6); // mm6 = v17
310 pmulhw_r2r (mm3, mm2); // mm2 = T2*x6
311 psubsw_r2r (mm5, mm0); // mm0 = b3
313 psubsw_r2r (mm3, mm4); // mm4 = v26
314 paddsw_r2r (mm6, mm5); // mm5 = v12
316 movq_r2m (mm0, scratch0); // save b3
317 movq_r2r (mm1, mm6); // mm6 = u17
319 paddsw_m2r (*(col+offset+2*8), mm2);// mm2 = u26
320 paddsw_r2r (mm7, mm6); // mm6 = b0
322 psubsw_r2r (mm7, mm1); // mm1 = u12
323 movq_r2r (mm1, mm7); // mm7 = u12
325 movq_m2r (*(col+offset+0*8), mm3); // mm3 = x0
326 paddsw_r2r (mm5, mm1); // mm1 = u12+v12
328 movq_m2r (*_C4, mm0); // mm0 = C4/2
329 psubsw_r2r (mm5, mm7); // mm7 = u12-v12
331 movq_r2m (mm6, scratch1); // save b0
332 pmulhw_r2r (mm0, mm1); // mm1 = b1/2
334 movq_r2r (mm4, mm6); // mm6 = v26
335 pmulhw_r2r (mm0, mm7); // mm7 = b2/2
337 movq_m2r (*(col+offset+4*8), mm5); // mm5 = x4
338 movq_r2r (mm3, mm0); // mm0 = x0
340 psubsw_r2r (mm5, mm3); // mm3 = v04
341 paddsw_r2r (mm5, mm0); // mm0 = u04
343 paddsw_r2r (mm3, mm4); // mm4 = a1
344 movq_r2r (mm0, mm5); // mm5 = u04
346 psubsw_r2r (mm6, mm3); // mm3 = a2
347 paddsw_r2r (mm2, mm5); // mm5 = a0
349 paddsw_r2r (mm1, mm1); // mm1 = b1
350 psubsw_r2r (mm2, mm0); // mm0 = a3
352 paddsw_r2r (mm7, mm7); // mm7 = b2
353 movq_r2r (mm3, mm2); // mm2 = a2
355 movq_r2r (mm4, mm6); // mm6 = a1
356 paddsw_r2r (mm7, mm3); // mm3 = a2+b2
358 psraw_i2r (COL_SHIFT, mm3); // mm3 = y2
359 paddsw_r2r (mm1, mm4); // mm4 = a1+b1
361 psraw_i2r (COL_SHIFT, mm4); // mm4 = y1
362 psubsw_r2r (mm1, mm6); // mm6 = a1-b1
364 movq_m2r (scratch1, mm1); // mm1 = b0
365 psubsw_r2r (mm7, mm2); // mm2 = a2-b2
367 psraw_i2r (COL_SHIFT, mm6); // mm6 = y6
368 movq_r2r (mm5, mm7); // mm7 = a0
370 movq_r2m (mm4, *(col+offset+1*8)); // save y1
371 psraw_i2r (COL_SHIFT, mm2); // mm2 = y5
373 movq_r2m (mm3, *(col+offset+2*8)); // save y2
374 paddsw_r2r (mm1, mm5); // mm5 = a0+b0
376 movq_m2r (scratch0, mm4); // mm4 = b3
377 psubsw_r2r (mm1, mm7); // mm7 = a0-b0
379 psraw_i2r (COL_SHIFT, mm5); // mm5 = y0
380 movq_r2r (mm0, mm3); // mm3 = a3
382 movq_r2m (mm2, *(col+offset+5*8)); // save y5
383 psubsw_r2r (mm4, mm3); // mm3 = a3-b3
385 psraw_i2r (COL_SHIFT, mm7); // mm7 = y7
386 paddsw_r2r (mm0, mm4); // mm4 = a3+b3
388 movq_r2m (mm5, *(col+offset+0*8)); // save y0
389 psraw_i2r (COL_SHIFT, mm3); // mm3 = y4
391 movq_r2m (mm6, *(col+offset+6*8)); // save y6
392 psraw_i2r (COL_SHIFT, mm4); // mm4 = y3
394 movq_r2m (mm7, *(col+offset+7*8)); // save y7
396 movq_r2m (mm3, *(col+offset+4*8)); // save y4
398 movq_r2m (mm4, *(col+offset+3*8)); // save y3
402 static s32 rounder0[] ATTR_ALIGN(8) =
403 rounder ((1 << (COL_SHIFT - 1)) - 0.5);
404 static s32 rounder4[] ATTR_ALIGN(8) = rounder (0);
405 static s32 rounder1[] ATTR_ALIGN(8) =
406 rounder (1.25683487303); // C1*(C1/C4+C1+C7)/2
407 static s32 rounder7[] ATTR_ALIGN(8) =
408 rounder (-0.25); // C1*(C7/C4+C7-C1)/2
409 static s32 rounder2[] ATTR_ALIGN(8) =
410 rounder (0.60355339059); // C2 * (C6+C2)/2
411 static s32 rounder6[] ATTR_ALIGN(8) =
412 rounder (-0.25); // C2 * (C6-C2)/2
413 static s32 rounder3[] ATTR_ALIGN(8) =
414 rounder (0.087788325588); // C3*(-C3/C4+C3+C5)/2
415 static s32 rounder5[] ATTR_ALIGN(8) =
416 rounder (-0.441341716183); // C3*(-C5/C4+C5-C3)/2
418 void _M( vdec_IDCT )( vdec_thread_t * p_vdec, dctelem_t * p_block,
421 static dctelem_t table04[] ATTR_ALIGN(16) =
422 table (22725, 21407, 19266, 16384, 12873, 8867, 4520);
423 static dctelem_t table17[] ATTR_ALIGN(16) =
424 table (31521, 29692, 26722, 22725, 17855, 12299, 6270);
425 static dctelem_t table26[] ATTR_ALIGN(16) =
426 table (29692, 27969, 25172, 21407, 16819, 11585, 5906);
427 static dctelem_t table35[] ATTR_ALIGN(16) =
428 table (26722, 25172, 22654, 19266, 15137, 10426, 5315);
430 RowHead( p_block, 0*8, table04 );
431 Row( table04, rounder0 );
432 RowMid( p_block, 0*8, 4*8, table04 );
433 Row( table04, rounder4 );
434 RowMid( p_block, 4*8, 1*8, table17 );
435 Row( table17, rounder1 );
436 RowMid( p_block, 1*8, 7*8, table17 );
437 Row( table17, rounder7 );
438 RowMid( p_block, 7*8, 2*8, table26 );
439 Row( table26, rounder2 );
440 RowMid( p_block, 2*8, 6*8, table26 );
441 Row( table26, rounder6 );
442 RowMid( p_block, 6*8, 3*8, table35 );
443 Row( table35, rounder3 );
444 RowMid( p_block, 3*8, 5*8, table35 );
445 Row( table35, rounder5 );
446 RowTail( p_block, 5*8);