2 * VC-1 and WMV3 decoder - DSP functions
3 * Copyright (c) 2006 Konstantin Shishkov
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * VC-1 and WMV3 decoder
31 /** Apply overlap transform to horizontal edge
33 static void vc1_v_overlap_c(uint8_t* src, int stride)
39 for(i = 0; i < 8; i++) {
44 d1 = (a - d + 3 + rnd) >> 3;
45 d2 = (a - d + b - c + 4 - rnd) >> 3;
47 src[-2*stride] = a - d1;
48 src[-stride] = av_clip_uint8(b - d2);
49 src[0] = av_clip_uint8(c + d2);
56 /** Apply overlap transform to vertical edge
58 static void vc1_h_overlap_c(uint8_t* src, int stride)
64 for(i = 0; i < 8; i++) {
69 d1 = (a - d + 3 + rnd) >> 3;
70 d2 = (a - d + b - c + 4 - rnd) >> 3;
73 src[-1] = av_clip_uint8(b - d2);
74 src[0] = av_clip_uint8(c + d2);
82 * VC-1 in-loop deblocking filter for one line
83 * @param src source block type
84 * @param stride block stride
85 * @param pq block quantizer
86 * @return whether other 3 pairs should be filtered or not
89 static av_always_inline int vc1_filter_line(uint8_t* src, int stride, int pq){
90 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
92 int a0 = (2*(src[-2*stride] - src[ 1*stride]) - 5*(src[-1*stride] - src[ 0*stride]) + 4) >> 3;
93 int a0_sign = a0 >> 31; /* Store sign */
94 a0 = (a0 ^ a0_sign) - a0_sign; /* a0 = FFABS(a0); */
96 int a1 = FFABS((2*(src[-4*stride] - src[-1*stride]) - 5*(src[-3*stride] - src[-2*stride]) + 4) >> 3);
97 int a2 = FFABS((2*(src[ 0*stride] - src[ 3*stride]) - 5*(src[ 1*stride] - src[ 2*stride]) + 4) >> 3);
98 if(a1 < a0 || a2 < a0){
99 int clip = src[-1*stride] - src[ 0*stride];
100 int clip_sign = clip >> 31;
101 clip = ((clip ^ clip_sign) - clip_sign)>>1;
103 int a3 = FFMIN(a1, a2);
104 int d = 5 * (a3 - a0);
105 int d_sign = (d >> 31);
106 d = ((d ^ d_sign) - d_sign) >> 3;
109 if( d_sign ^ clip_sign )
113 d = (d ^ d_sign) - d_sign; /* Restore sign */
114 src[-1*stride] = cm[src[-1*stride] - d];
115 src[ 0*stride] = cm[src[ 0*stride] + d];
125 * VC-1 in-loop deblocking filter
126 * @param src source block type
127 * @param step distance between horizontally adjacent elements
128 * @param stride distance between vertically adjacent elements
129 * @param len edge length to filter (4 or 8 pixels)
130 * @param pq block quantizer
133 static inline void vc1_loop_filter(uint8_t* src, int step, int stride, int len, int pq)
138 for(i = 0; i < len; i += 4){
139 filt3 = vc1_filter_line(src + 2*step, stride, pq);
141 vc1_filter_line(src + 0*step, stride, pq);
142 vc1_filter_line(src + 1*step, stride, pq);
143 vc1_filter_line(src + 3*step, stride, pq);
149 static void vc1_v_loop_filter4_c(uint8_t *src, int stride, int pq)
151 vc1_loop_filter(src, 1, stride, 4, pq);
154 static void vc1_h_loop_filter4_c(uint8_t *src, int stride, int pq)
156 vc1_loop_filter(src, stride, 1, 4, pq);
159 static void vc1_v_loop_filter8_c(uint8_t *src, int stride, int pq)
161 vc1_loop_filter(src, 1, stride, 8, pq);
164 static void vc1_h_loop_filter8_c(uint8_t *src, int stride, int pq)
166 vc1_loop_filter(src, stride, 1, 8, pq);
169 static void vc1_v_loop_filter16_c(uint8_t *src, int stride, int pq)
171 vc1_loop_filter(src, 1, stride, 16, pq);
174 static void vc1_h_loop_filter16_c(uint8_t *src, int stride, int pq)
176 vc1_loop_filter(src, stride, 1, 16, pq);
179 /** Do inverse transform on 8x8 block
181 static void vc1_inv_trans_8x8_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
186 dc = (3 * dc + 1) >> 1;
187 dc = (3 * dc + 16) >> 5;
188 cm = ff_cropTbl + MAX_NEG_CROP + dc;
189 for(i = 0; i < 8; i++){
190 dest[0] = cm[dest[0]];
191 dest[1] = cm[dest[1]];
192 dest[2] = cm[dest[2]];
193 dest[3] = cm[dest[3]];
194 dest[4] = cm[dest[4]];
195 dest[5] = cm[dest[5]];
196 dest[6] = cm[dest[6]];
197 dest[7] = cm[dest[7]];
202 static void vc1_inv_trans_8x8_c(DCTELEM block[64])
205 register int t1,t2,t3,t4,t5,t6,t7,t8;
210 for(i = 0; i < 8; i++){
211 t1 = 12 * (src[0] + src[4]) + 4;
212 t2 = 12 * (src[0] - src[4]) + 4;
213 t3 = 16 * src[2] + 6 * src[6];
214 t4 = 6 * src[2] - 16 * src[6];
221 t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7];
222 t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7];
223 t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7];
224 t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7];
226 dst[0] = (t5 + t1) >> 3;
227 dst[1] = (t6 + t2) >> 3;
228 dst[2] = (t7 + t3) >> 3;
229 dst[3] = (t8 + t4) >> 3;
230 dst[4] = (t8 - t4) >> 3;
231 dst[5] = (t7 - t3) >> 3;
232 dst[6] = (t6 - t2) >> 3;
233 dst[7] = (t5 - t1) >> 3;
241 for(i = 0; i < 8; i++){
242 t1 = 12 * (src[ 0] + src[32]) + 64;
243 t2 = 12 * (src[ 0] - src[32]) + 64;
244 t3 = 16 * src[16] + 6 * src[48];
245 t4 = 6 * src[16] - 16 * src[48];
252 t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
253 t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
254 t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
255 t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
257 dst[ 0] = (t5 + t1) >> 7;
258 dst[ 8] = (t6 + t2) >> 7;
259 dst[16] = (t7 + t3) >> 7;
260 dst[24] = (t8 + t4) >> 7;
261 dst[32] = (t8 - t4 + 1) >> 7;
262 dst[40] = (t7 - t3 + 1) >> 7;
263 dst[48] = (t6 - t2 + 1) >> 7;
264 dst[56] = (t5 - t1 + 1) >> 7;
271 /** Do inverse transform on 8x4 part of block
273 static void vc1_inv_trans_8x4_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
278 dc = ( 3 * dc + 1) >> 1;
279 dc = (17 * dc + 64) >> 7;
280 cm = ff_cropTbl + MAX_NEG_CROP + dc;
281 for(i = 0; i < 4; i++){
282 dest[0] = cm[dest[0]];
283 dest[1] = cm[dest[1]];
284 dest[2] = cm[dest[2]];
285 dest[3] = cm[dest[3]];
286 dest[4] = cm[dest[4]];
287 dest[5] = cm[dest[5]];
288 dest[6] = cm[dest[6]];
289 dest[7] = cm[dest[7]];
294 static void vc1_inv_trans_8x4_c(uint8_t *dest, int linesize, DCTELEM *block)
297 register int t1,t2,t3,t4,t5,t6,t7,t8;
299 const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
303 for(i = 0; i < 4; i++){
304 t1 = 12 * (src[0] + src[4]) + 4;
305 t2 = 12 * (src[0] - src[4]) + 4;
306 t3 = 16 * src[2] + 6 * src[6];
307 t4 = 6 * src[2] - 16 * src[6];
314 t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7];
315 t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7];
316 t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7];
317 t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7];
319 dst[0] = (t5 + t1) >> 3;
320 dst[1] = (t6 + t2) >> 3;
321 dst[2] = (t7 + t3) >> 3;
322 dst[3] = (t8 + t4) >> 3;
323 dst[4] = (t8 - t4) >> 3;
324 dst[5] = (t7 - t3) >> 3;
325 dst[6] = (t6 - t2) >> 3;
326 dst[7] = (t5 - t1) >> 3;
333 for(i = 0; i < 8; i++){
334 t1 = 17 * (src[ 0] + src[16]) + 64;
335 t2 = 17 * (src[ 0] - src[16]) + 64;
336 t3 = 22 * src[ 8] + 10 * src[24];
337 t4 = 22 * src[24] - 10 * src[ 8];
339 dest[0*linesize] = cm[dest[0*linesize] + ((t1 + t3) >> 7)];
340 dest[1*linesize] = cm[dest[1*linesize] + ((t2 - t4) >> 7)];
341 dest[2*linesize] = cm[dest[2*linesize] + ((t2 + t4) >> 7)];
342 dest[3*linesize] = cm[dest[3*linesize] + ((t1 - t3) >> 7)];
349 /** Do inverse transform on 4x8 parts of block
351 static void vc1_inv_trans_4x8_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
356 dc = (17 * dc + 4) >> 3;
357 dc = (12 * dc + 64) >> 7;
358 cm = ff_cropTbl + MAX_NEG_CROP + dc;
359 for(i = 0; i < 8; i++){
360 dest[0] = cm[dest[0]];
361 dest[1] = cm[dest[1]];
362 dest[2] = cm[dest[2]];
363 dest[3] = cm[dest[3]];
368 static void vc1_inv_trans_4x8_c(uint8_t *dest, int linesize, DCTELEM *block)
371 register int t1,t2,t3,t4,t5,t6,t7,t8;
373 const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
377 for(i = 0; i < 8; i++){
378 t1 = 17 * (src[0] + src[2]) + 4;
379 t2 = 17 * (src[0] - src[2]) + 4;
380 t3 = 22 * src[1] + 10 * src[3];
381 t4 = 22 * src[3] - 10 * src[1];
383 dst[0] = (t1 + t3) >> 3;
384 dst[1] = (t2 - t4) >> 3;
385 dst[2] = (t2 + t4) >> 3;
386 dst[3] = (t1 - t3) >> 3;
393 for(i = 0; i < 4; i++){
394 t1 = 12 * (src[ 0] + src[32]) + 64;
395 t2 = 12 * (src[ 0] - src[32]) + 64;
396 t3 = 16 * src[16] + 6 * src[48];
397 t4 = 6 * src[16] - 16 * src[48];
404 t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
405 t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
406 t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
407 t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
409 dest[0*linesize] = cm[dest[0*linesize] + ((t5 + t1) >> 7)];
410 dest[1*linesize] = cm[dest[1*linesize] + ((t6 + t2) >> 7)];
411 dest[2*linesize] = cm[dest[2*linesize] + ((t7 + t3) >> 7)];
412 dest[3*linesize] = cm[dest[3*linesize] + ((t8 + t4) >> 7)];
413 dest[4*linesize] = cm[dest[4*linesize] + ((t8 - t4 + 1) >> 7)];
414 dest[5*linesize] = cm[dest[5*linesize] + ((t7 - t3 + 1) >> 7)];
415 dest[6*linesize] = cm[dest[6*linesize] + ((t6 - t2 + 1) >> 7)];
416 dest[7*linesize] = cm[dest[7*linesize] + ((t5 - t1 + 1) >> 7)];
423 /** Do inverse transform on 4x4 part of block
425 static void vc1_inv_trans_4x4_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
430 dc = (17 * dc + 4) >> 3;
431 dc = (17 * dc + 64) >> 7;
432 cm = ff_cropTbl + MAX_NEG_CROP + dc;
433 for(i = 0; i < 4; i++){
434 dest[0] = cm[dest[0]];
435 dest[1] = cm[dest[1]];
436 dest[2] = cm[dest[2]];
437 dest[3] = cm[dest[3]];
442 static void vc1_inv_trans_4x4_c(uint8_t *dest, int linesize, DCTELEM *block)
445 register int t1,t2,t3,t4;
447 const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
451 for(i = 0; i < 4; i++){
452 t1 = 17 * (src[0] + src[2]) + 4;
453 t2 = 17 * (src[0] - src[2]) + 4;
454 t3 = 22 * src[1] + 10 * src[3];
455 t4 = 22 * src[3] - 10 * src[1];
457 dst[0] = (t1 + t3) >> 3;
458 dst[1] = (t2 - t4) >> 3;
459 dst[2] = (t2 + t4) >> 3;
460 dst[3] = (t1 - t3) >> 3;
467 for(i = 0; i < 4; i++){
468 t1 = 17 * (src[ 0] + src[16]) + 64;
469 t2 = 17 * (src[ 0] - src[16]) + 64;
470 t3 = 22 * src[ 8] + 10 * src[24];
471 t4 = 22 * src[24] - 10 * src[ 8];
473 dest[0*linesize] = cm[dest[0*linesize] + ((t1 + t3) >> 7)];
474 dest[1*linesize] = cm[dest[1*linesize] + ((t2 - t4) >> 7)];
475 dest[2*linesize] = cm[dest[2*linesize] + ((t2 + t4) >> 7)];
476 dest[3*linesize] = cm[dest[3*linesize] + ((t1 - t3) >> 7)];
483 /* motion compensation functions */
484 /** Filter in case of 2 filters */
485 #define VC1_MSPEL_FILTER_16B(DIR, TYPE) \
486 static av_always_inline int vc1_mspel_ ## DIR ## _filter_16bits(const TYPE *src, int stride, int mode) \
489 case 0: /* no shift - should not occur */ \
491 case 1: /* 1/4 shift */ \
492 return -4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2]; \
493 case 2: /* 1/2 shift */ \
494 return -src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2]; \
495 case 3: /* 3/4 shift */ \
496 return -3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2]; \
498 return 0; /* should not occur */ \
501 VC1_MSPEL_FILTER_16B(ver, uint8_t);
502 VC1_MSPEL_FILTER_16B(hor, int16_t);
505 /** Filter used to interpolate fractional pel values
507 static av_always_inline int vc1_mspel_filter(const uint8_t *src, int stride, int mode, int r)
513 return (-4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2] + 32 - r) >> 6;
515 return (-src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2] + 8 - r) >> 4;
517 return (-3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2] + 32 - r) >> 6;
519 return 0; //should not occur
522 /** Function used to do motion compensation with bicubic interpolation
524 #define VC1_MSPEL_MC(OP, OPNAME)\
525 static void OPNAME ## vc1_mspel_mc(uint8_t *dst, const uint8_t *src, int stride, int hmode, int vmode, int rnd)\
529 if (vmode) { /* Horizontal filter to apply */\
532 if (hmode) { /* Vertical filter to apply, output to tmp */\
533 static const int shift_value[] = { 0, 5, 1, 5 };\
534 int shift = (shift_value[hmode]+shift_value[vmode])>>1;\
535 int16_t tmp[11*8], *tptr = tmp;\
537 r = (1<<(shift-1)) + rnd-1;\
540 for(j = 0; j < 8; j++) {\
541 for(i = 0; i < 11; i++)\
542 tptr[i] = (vc1_mspel_ver_filter_16bits(src + i, stride, vmode)+r)>>shift;\
549 for(j = 0; j < 8; j++) {\
550 for(i = 0; i < 8; i++)\
551 OP(dst[i], (vc1_mspel_hor_filter_16bits(tptr + i, 1, hmode)+r)>>7);\
558 else { /* No horizontal filter, output 8 lines to dst */\
561 for(j = 0; j < 8; j++) {\
562 for(i = 0; i < 8; i++)\
563 OP(dst[i], vc1_mspel_filter(src + i, stride, vmode, r));\
571 /* Horizontal mode with no vertical mode */\
572 for(j = 0; j < 8; j++) {\
573 for(i = 0; i < 8; i++)\
574 OP(dst[i], vc1_mspel_filter(src + i, 1, hmode, rnd));\
580 #define op_put(a, b) a = av_clip_uint8(b)
581 #define op_avg(a, b) a = (a + av_clip_uint8(b) + 1) >> 1
583 VC1_MSPEL_MC(op_put, put_)
584 VC1_MSPEL_MC(op_avg, avg_)
586 /* pixel functions - really are entry points to vc1_mspel_mc */
588 #define PUT_VC1_MSPEL(a, b)\
589 static void put_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { \
590 put_vc1_mspel_mc(dst, src, stride, a, b, rnd); \
592 static void avg_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { \
593 avg_vc1_mspel_mc(dst, src, stride, a, b, rnd); \
615 av_cold void ff_vc1dsp_init(DSPContext* dsp, AVCodecContext *avctx) {
616 dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_c;
617 dsp->vc1_inv_trans_4x8 = vc1_inv_trans_4x8_c;
618 dsp->vc1_inv_trans_8x4 = vc1_inv_trans_8x4_c;
619 dsp->vc1_inv_trans_4x4 = vc1_inv_trans_4x4_c;
620 dsp->vc1_inv_trans_8x8_dc = vc1_inv_trans_8x8_dc_c;
621 dsp->vc1_inv_trans_4x8_dc = vc1_inv_trans_4x8_dc_c;
622 dsp->vc1_inv_trans_8x4_dc = vc1_inv_trans_8x4_dc_c;
623 dsp->vc1_inv_trans_4x4_dc = vc1_inv_trans_4x4_dc_c;
624 dsp->vc1_h_overlap = vc1_h_overlap_c;
625 dsp->vc1_v_overlap = vc1_v_overlap_c;
626 dsp->vc1_v_loop_filter4 = vc1_v_loop_filter4_c;
627 dsp->vc1_h_loop_filter4 = vc1_h_loop_filter4_c;
628 dsp->vc1_v_loop_filter8 = vc1_v_loop_filter8_c;
629 dsp->vc1_h_loop_filter8 = vc1_h_loop_filter8_c;
630 dsp->vc1_v_loop_filter16 = vc1_v_loop_filter16_c;
631 dsp->vc1_h_loop_filter16 = vc1_h_loop_filter16_c;
633 dsp->put_vc1_mspel_pixels_tab[ 0] = ff_put_pixels8x8_c;
634 dsp->put_vc1_mspel_pixels_tab[ 1] = put_vc1_mspel_mc10_c;
635 dsp->put_vc1_mspel_pixels_tab[ 2] = put_vc1_mspel_mc20_c;
636 dsp->put_vc1_mspel_pixels_tab[ 3] = put_vc1_mspel_mc30_c;
637 dsp->put_vc1_mspel_pixels_tab[ 4] = put_vc1_mspel_mc01_c;
638 dsp->put_vc1_mspel_pixels_tab[ 5] = put_vc1_mspel_mc11_c;
639 dsp->put_vc1_mspel_pixels_tab[ 6] = put_vc1_mspel_mc21_c;
640 dsp->put_vc1_mspel_pixels_tab[ 7] = put_vc1_mspel_mc31_c;
641 dsp->put_vc1_mspel_pixels_tab[ 8] = put_vc1_mspel_mc02_c;
642 dsp->put_vc1_mspel_pixels_tab[ 9] = put_vc1_mspel_mc12_c;
643 dsp->put_vc1_mspel_pixels_tab[10] = put_vc1_mspel_mc22_c;
644 dsp->put_vc1_mspel_pixels_tab[11] = put_vc1_mspel_mc32_c;
645 dsp->put_vc1_mspel_pixels_tab[12] = put_vc1_mspel_mc03_c;
646 dsp->put_vc1_mspel_pixels_tab[13] = put_vc1_mspel_mc13_c;
647 dsp->put_vc1_mspel_pixels_tab[14] = put_vc1_mspel_mc23_c;
648 dsp->put_vc1_mspel_pixels_tab[15] = put_vc1_mspel_mc33_c;
650 dsp->avg_vc1_mspel_pixels_tab[ 0] = ff_avg_pixels8x8_c;
651 dsp->avg_vc1_mspel_pixels_tab[ 1] = avg_vc1_mspel_mc10_c;
652 dsp->avg_vc1_mspel_pixels_tab[ 2] = avg_vc1_mspel_mc20_c;
653 dsp->avg_vc1_mspel_pixels_tab[ 3] = avg_vc1_mspel_mc30_c;
654 dsp->avg_vc1_mspel_pixels_tab[ 4] = avg_vc1_mspel_mc01_c;
655 dsp->avg_vc1_mspel_pixels_tab[ 5] = avg_vc1_mspel_mc11_c;
656 dsp->avg_vc1_mspel_pixels_tab[ 6] = avg_vc1_mspel_mc21_c;
657 dsp->avg_vc1_mspel_pixels_tab[ 7] = avg_vc1_mspel_mc31_c;
658 dsp->avg_vc1_mspel_pixels_tab[ 8] = avg_vc1_mspel_mc02_c;
659 dsp->avg_vc1_mspel_pixels_tab[ 9] = avg_vc1_mspel_mc12_c;
660 dsp->avg_vc1_mspel_pixels_tab[10] = avg_vc1_mspel_mc22_c;
661 dsp->avg_vc1_mspel_pixels_tab[11] = avg_vc1_mspel_mc32_c;
662 dsp->avg_vc1_mspel_pixels_tab[12] = avg_vc1_mspel_mc03_c;
663 dsp->avg_vc1_mspel_pixels_tab[13] = avg_vc1_mspel_mc13_c;
664 dsp->avg_vc1_mspel_pixels_tab[14] = avg_vc1_mspel_mc23_c;
665 dsp->avg_vc1_mspel_pixels_tab[15] = avg_vc1_mspel_mc33_c;