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1 | /* |
2 | * VC-1 and WMV3 decoder | |
3 | * Copyright (c) 2011 Mashiat Sarker Shakkhar | |
4 | * Copyright (c) 2006-2007 Konstantin Shishkov | |
5 | * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer | |
6 | * | |
7 | * This file is part of FFmpeg. | |
8 | * | |
9 | * FFmpeg is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU Lesser General Public | |
11 | * License as published by the Free Software Foundation; either | |
12 | * version 2.1 of the License, or (at your option) any later version. | |
13 | * | |
14 | * FFmpeg is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public | |
20 | * License along with FFmpeg; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
22 | */ | |
23 | ||
24 | /** | |
25 | * @file | |
26 | * VC-1 and WMV3 block decoding routines | |
27 | */ | |
28 | ||
29 | #include "avcodec.h" | |
30 | #include "mpegutils.h" | |
31 | #include "mpegvideo.h" | |
32 | #include "msmpeg4data.h" | |
33 | #include "unary.h" | |
34 | #include "vc1.h" | |
35 | #include "vc1_pred.h" | |
36 | #include "vc1acdata.h" | |
37 | #include "vc1data.h" | |
38 | ||
39 | #define MB_INTRA_VLC_BITS 9 | |
40 | #define DC_VLC_BITS 9 | |
41 | ||
42 | // offset tables for interlaced picture MVDATA decoding | |
43 | static const int offset_table1[9] = { 0, 1, 2, 4, 8, 16, 32, 64, 128 }; | |
44 | static const int offset_table2[9] = { 0, 1, 3, 7, 15, 31, 63, 127, 255 }; | |
45 | ||
46 | /***********************************************************************/ | |
47 | /** | |
48 | * @name VC-1 Bitplane decoding | |
49 | * @see 8.7, p56 | |
50 | * @{ | |
51 | */ | |
52 | ||
53 | ||
54 | static void init_block_index(VC1Context *v) | |
55 | { | |
56 | MpegEncContext *s = &v->s; | |
57 | ff_init_block_index(s); | |
58 | if (v->field_mode && !(v->second_field ^ v->tff)) { | |
59 | s->dest[0] += s->current_picture_ptr->f->linesize[0]; | |
60 | s->dest[1] += s->current_picture_ptr->f->linesize[1]; | |
61 | s->dest[2] += s->current_picture_ptr->f->linesize[2]; | |
62 | } | |
63 | } | |
64 | ||
65 | /** @} */ //Bitplane group | |
66 | ||
67 | static void vc1_put_signed_blocks_clamped(VC1Context *v) | |
68 | { | |
69 | MpegEncContext *s = &v->s; | |
70 | int topleft_mb_pos, top_mb_pos; | |
71 | int stride_y, fieldtx = 0; | |
72 | int v_dist; | |
73 | ||
74 | /* The put pixels loop is always one MB row behind the decoding loop, | |
75 | * because we can only put pixels when overlap filtering is done, and | |
76 | * for filtering of the bottom edge of a MB, we need the next MB row | |
77 | * present as well. | |
78 | * Within the row, the put pixels loop is also one MB col behind the | |
79 | * decoding loop. The reason for this is again, because for filtering | |
80 | * of the right MB edge, we need the next MB present. */ | |
81 | if (!s->first_slice_line) { | |
82 | if (s->mb_x) { | |
83 | topleft_mb_pos = (s->mb_y - 1) * s->mb_stride + s->mb_x - 1; | |
84 | if (v->fcm == ILACE_FRAME) | |
85 | fieldtx = v->fieldtx_plane[topleft_mb_pos]; | |
86 | stride_y = s->linesize << fieldtx; | |
87 | v_dist = (16 - fieldtx) >> (fieldtx == 0); | |
88 | s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][0], | |
89 | s->dest[0] - 16 * s->linesize - 16, | |
90 | stride_y); | |
91 | s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][1], | |
92 | s->dest[0] - 16 * s->linesize - 8, | |
93 | stride_y); | |
94 | s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][2], | |
95 | s->dest[0] - v_dist * s->linesize - 16, | |
96 | stride_y); | |
97 | s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][3], | |
98 | s->dest[0] - v_dist * s->linesize - 8, | |
99 | stride_y); | |
100 | s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][4], | |
101 | s->dest[1] - 8 * s->uvlinesize - 8, | |
102 | s->uvlinesize); | |
103 | s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][5], | |
104 | s->dest[2] - 8 * s->uvlinesize - 8, | |
105 | s->uvlinesize); | |
106 | } | |
107 | if (s->mb_x == s->mb_width - 1) { | |
108 | top_mb_pos = (s->mb_y - 1) * s->mb_stride + s->mb_x; | |
109 | if (v->fcm == ILACE_FRAME) | |
110 | fieldtx = v->fieldtx_plane[top_mb_pos]; | |
111 | stride_y = s->linesize << fieldtx; | |
112 | v_dist = fieldtx ? 15 : 8; | |
113 | s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][0], | |
114 | s->dest[0] - 16 * s->linesize, | |
115 | stride_y); | |
116 | s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][1], | |
117 | s->dest[0] - 16 * s->linesize + 8, | |
118 | stride_y); | |
119 | s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][2], | |
120 | s->dest[0] - v_dist * s->linesize, | |
121 | stride_y); | |
122 | s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][3], | |
123 | s->dest[0] - v_dist * s->linesize + 8, | |
124 | stride_y); | |
125 | s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][4], | |
126 | s->dest[1] - 8 * s->uvlinesize, | |
127 | s->uvlinesize); | |
128 | s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][5], | |
129 | s->dest[2] - 8 * s->uvlinesize, | |
130 | s->uvlinesize); | |
131 | } | |
132 | } | |
133 | ||
134 | #define inc_blk_idx(idx) do { \ | |
135 | idx++; \ | |
136 | if (idx >= v->n_allocated_blks) \ | |
137 | idx = 0; \ | |
138 | } while (0) | |
139 | ||
140 | inc_blk_idx(v->topleft_blk_idx); | |
141 | inc_blk_idx(v->top_blk_idx); | |
142 | inc_blk_idx(v->left_blk_idx); | |
143 | inc_blk_idx(v->cur_blk_idx); | |
144 | } | |
145 | ||
146 | /***********************************************************************/ | |
147 | /** | |
148 | * @name VC-1 Block-level functions | |
149 | * @see 7.1.4, p91 and 8.1.1.7, p(1)04 | |
150 | * @{ | |
151 | */ | |
152 | ||
153 | /** | |
154 | * @def GET_MQUANT | |
155 | * @brief Get macroblock-level quantizer scale | |
156 | */ | |
157 | #define GET_MQUANT() \ | |
158 | if (v->dquantfrm) { \ | |
159 | int edges = 0; \ | |
160 | if (v->dqprofile == DQPROFILE_ALL_MBS) { \ | |
161 | if (v->dqbilevel) { \ | |
162 | mquant = (get_bits1(gb)) ? v->altpq : v->pq; \ | |
163 | } else { \ | |
164 | mqdiff = get_bits(gb, 3); \ | |
165 | if (mqdiff != 7) \ | |
166 | mquant = v->pq + mqdiff; \ | |
167 | else \ | |
168 | mquant = get_bits(gb, 5); \ | |
169 | } \ | |
170 | } \ | |
171 | if (v->dqprofile == DQPROFILE_SINGLE_EDGE) \ | |
172 | edges = 1 << v->dqsbedge; \ | |
173 | else if (v->dqprofile == DQPROFILE_DOUBLE_EDGES) \ | |
174 | edges = (3 << v->dqsbedge) % 15; \ | |
175 | else if (v->dqprofile == DQPROFILE_FOUR_EDGES) \ | |
176 | edges = 15; \ | |
177 | if ((edges&1) && !s->mb_x) \ | |
178 | mquant = v->altpq; \ | |
179 | if ((edges&2) && s->first_slice_line) \ | |
180 | mquant = v->altpq; \ | |
181 | if ((edges&4) && s->mb_x == (s->mb_width - 1)) \ | |
182 | mquant = v->altpq; \ | |
183 | if ((edges&8) && s->mb_y == (s->mb_height - 1)) \ | |
184 | mquant = v->altpq; \ | |
185 | if (!mquant || mquant > 31) { \ | |
186 | av_log(v->s.avctx, AV_LOG_ERROR, \ | |
187 | "Overriding invalid mquant %d\n", mquant); \ | |
188 | mquant = 1; \ | |
189 | } \ | |
190 | } | |
191 | ||
192 | /** | |
193 | * @def GET_MVDATA(_dmv_x, _dmv_y) | |
194 | * @brief Get MV differentials | |
195 | * @see MVDATA decoding from 8.3.5.2, p(1)20 | |
196 | * @param _dmv_x Horizontal differential for decoded MV | |
197 | * @param _dmv_y Vertical differential for decoded MV | |
198 | */ | |
199 | #define GET_MVDATA(_dmv_x, _dmv_y) \ | |
200 | index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index].table, \ | |
201 | VC1_MV_DIFF_VLC_BITS, 2); \ | |
202 | if (index > 36) { \ | |
203 | mb_has_coeffs = 1; \ | |
204 | index -= 37; \ | |
205 | } else \ | |
206 | mb_has_coeffs = 0; \ | |
207 | s->mb_intra = 0; \ | |
208 | if (!index) { \ | |
209 | _dmv_x = _dmv_y = 0; \ | |
210 | } else if (index == 35) { \ | |
211 | _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \ | |
212 | _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \ | |
213 | } else if (index == 36) { \ | |
214 | _dmv_x = 0; \ | |
215 | _dmv_y = 0; \ | |
216 | s->mb_intra = 1; \ | |
217 | } else { \ | |
218 | index1 = index % 6; \ | |
219 | if (!s->quarter_sample && index1 == 5) val = 1; \ | |
220 | else val = 0; \ | |
221 | if (size_table[index1] - val > 0) \ | |
222 | val = get_bits(gb, size_table[index1] - val); \ | |
223 | else val = 0; \ | |
224 | sign = 0 - (val&1); \ | |
225 | _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \ | |
226 | \ | |
227 | index1 = index / 6; \ | |
228 | if (!s->quarter_sample && index1 == 5) val = 1; \ | |
229 | else val = 0; \ | |
230 | if (size_table[index1] - val > 0) \ | |
231 | val = get_bits(gb, size_table[index1] - val); \ | |
232 | else val = 0; \ | |
233 | sign = 0 - (val & 1); \ | |
234 | _dmv_y = (sign ^ ((val >> 1) + offset_table[index1])) - sign; \ | |
235 | } | |
236 | ||
237 | static av_always_inline void get_mvdata_interlaced(VC1Context *v, int *dmv_x, | |
238 | int *dmv_y, int *pred_flag) | |
239 | { | |
240 | int index, index1; | |
241 | int extend_x = 0, extend_y = 0; | |
242 | GetBitContext *gb = &v->s.gb; | |
243 | int bits, esc; | |
244 | int val, sign; | |
245 | const int* offs_tab; | |
246 | ||
247 | if (v->numref) { | |
248 | bits = VC1_2REF_MVDATA_VLC_BITS; | |
249 | esc = 125; | |
250 | } else { | |
251 | bits = VC1_1REF_MVDATA_VLC_BITS; | |
252 | esc = 71; | |
253 | } | |
254 | switch (v->dmvrange) { | |
255 | case 1: | |
256 | extend_x = 1; | |
257 | break; | |
258 | case 2: | |
259 | extend_y = 1; | |
260 | break; | |
261 | case 3: | |
262 | extend_x = extend_y = 1; | |
263 | break; | |
264 | } | |
265 | index = get_vlc2(gb, v->imv_vlc->table, bits, 3); | |
266 | if (index == esc) { | |
267 | *dmv_x = get_bits(gb, v->k_x); | |
268 | *dmv_y = get_bits(gb, v->k_y); | |
269 | if (v->numref) { | |
270 | if (pred_flag) { | |
271 | *pred_flag = *dmv_y & 1; | |
272 | *dmv_y = (*dmv_y + *pred_flag) >> 1; | |
273 | } else { | |
274 | *dmv_y = (*dmv_y + (*dmv_y & 1)) >> 1; | |
275 | } | |
276 | } | |
277 | } | |
278 | else { | |
279 | av_assert0(index < esc); | |
280 | if (extend_x) | |
281 | offs_tab = offset_table2; | |
282 | else | |
283 | offs_tab = offset_table1; | |
284 | index1 = (index + 1) % 9; | |
285 | if (index1 != 0) { | |
286 | val = get_bits(gb, index1 + extend_x); | |
287 | sign = 0 -(val & 1); | |
288 | *dmv_x = (sign ^ ((val >> 1) + offs_tab[index1])) - sign; | |
289 | } else | |
290 | *dmv_x = 0; | |
291 | if (extend_y) | |
292 | offs_tab = offset_table2; | |
293 | else | |
294 | offs_tab = offset_table1; | |
295 | index1 = (index + 1) / 9; | |
296 | if (index1 > v->numref) { | |
297 | val = get_bits(gb, (index1 + (extend_y << v->numref)) >> v->numref); | |
298 | sign = 0 - (val & 1); | |
299 | *dmv_y = (sign ^ ((val >> 1) + offs_tab[index1 >> v->numref])) - sign; | |
300 | } else | |
301 | *dmv_y = 0; | |
302 | if (v->numref && pred_flag) | |
303 | *pred_flag = index1 & 1; | |
304 | } | |
305 | } | |
306 | ||
307 | /** Reconstruct motion vector for B-frame and do motion compensation | |
308 | */ | |
309 | static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], | |
310 | int direct, int mode) | |
311 | { | |
312 | if (direct) { | |
313 | ff_vc1_mc_1mv(v, 0); | |
314 | ff_vc1_interp_mc(v); | |
315 | return; | |
316 | } | |
317 | if (mode == BMV_TYPE_INTERPOLATED) { | |
318 | ff_vc1_mc_1mv(v, 0); | |
319 | ff_vc1_interp_mc(v); | |
320 | return; | |
321 | } | |
322 | ||
323 | ff_vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD)); | |
324 | } | |
325 | ||
326 | /** Get predicted DC value for I-frames only | |
327 | * prediction dir: left=0, top=1 | |
328 | * @param s MpegEncContext | |
329 | * @param overlap flag indicating that overlap filtering is used | |
330 | * @param pq integer part of picture quantizer | |
331 | * @param[in] n block index in the current MB | |
332 | * @param dc_val_ptr Pointer to DC predictor | |
333 | * @param dir_ptr Prediction direction for use in AC prediction | |
334 | */ | |
335 | static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n, | |
336 | int16_t **dc_val_ptr, int *dir_ptr) | |
337 | { | |
338 | int a, b, c, wrap, pred, scale; | |
339 | int16_t *dc_val; | |
340 | static const uint16_t dcpred[32] = { | |
341 | -1, 1024, 512, 341, 256, 205, 171, 146, 128, | |
342 | 114, 102, 93, 85, 79, 73, 68, 64, | |
343 | 60, 57, 54, 51, 49, 47, 45, 43, | |
344 | 41, 39, 38, 37, 35, 34, 33 | |
345 | }; | |
346 | ||
347 | /* find prediction - wmv3_dc_scale always used here in fact */ | |
348 | if (n < 4) scale = s->y_dc_scale; | |
349 | else scale = s->c_dc_scale; | |
350 | ||
351 | wrap = s->block_wrap[n]; | |
352 | dc_val = s->dc_val[0] + s->block_index[n]; | |
353 | ||
354 | /* B A | |
355 | * C X | |
356 | */ | |
357 | c = dc_val[ - 1]; | |
358 | b = dc_val[ - 1 - wrap]; | |
359 | a = dc_val[ - wrap]; | |
360 | ||
361 | if (pq < 9 || !overlap) { | |
362 | /* Set outer values */ | |
363 | if (s->first_slice_line && (n != 2 && n != 3)) | |
364 | b = a = dcpred[scale]; | |
365 | if (s->mb_x == 0 && (n != 1 && n != 3)) | |
366 | b = c = dcpred[scale]; | |
367 | } else { | |
368 | /* Set outer values */ | |
369 | if (s->first_slice_line && (n != 2 && n != 3)) | |
370 | b = a = 0; | |
371 | if (s->mb_x == 0 && (n != 1 && n != 3)) | |
372 | b = c = 0; | |
373 | } | |
374 | ||
375 | if (abs(a - b) <= abs(b - c)) { | |
376 | pred = c; | |
377 | *dir_ptr = 1; // left | |
378 | } else { | |
379 | pred = a; | |
380 | *dir_ptr = 0; // top | |
381 | } | |
382 | ||
383 | /* update predictor */ | |
384 | *dc_val_ptr = &dc_val[0]; | |
385 | return pred; | |
386 | } | |
387 | ||
388 | ||
389 | /** Get predicted DC value | |
390 | * prediction dir: left=0, top=1 | |
391 | * @param s MpegEncContext | |
392 | * @param overlap flag indicating that overlap filtering is used | |
393 | * @param pq integer part of picture quantizer | |
394 | * @param[in] n block index in the current MB | |
395 | * @param a_avail flag indicating top block availability | |
396 | * @param c_avail flag indicating left block availability | |
397 | * @param dc_val_ptr Pointer to DC predictor | |
398 | * @param dir_ptr Prediction direction for use in AC prediction | |
399 | */ | |
400 | static inline int ff_vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n, | |
401 | int a_avail, int c_avail, | |
402 | int16_t **dc_val_ptr, int *dir_ptr) | |
403 | { | |
404 | int a, b, c, wrap, pred; | |
405 | int16_t *dc_val; | |
406 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; | |
407 | int q1, q2 = 0; | |
408 | int dqscale_index; | |
409 | ||
410 | wrap = s->block_wrap[n]; | |
411 | dc_val = s->dc_val[0] + s->block_index[n]; | |
412 | ||
413 | /* B A | |
414 | * C X | |
415 | */ | |
416 | c = dc_val[ - 1]; | |
417 | b = dc_val[ - 1 - wrap]; | |
418 | a = dc_val[ - wrap]; | |
419 | /* scale predictors if needed */ | |
420 | q1 = s->current_picture.qscale_table[mb_pos]; | |
421 | dqscale_index = s->y_dc_scale_table[q1] - 1; | |
422 | if (dqscale_index < 0) | |
423 | return 0; | |
424 | if (c_avail && (n != 1 && n != 3)) { | |
425 | q2 = s->current_picture.qscale_table[mb_pos - 1]; | |
426 | if (q2 && q2 != q1) | |
427 | c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18; | |
428 | } | |
429 | if (a_avail && (n != 2 && n != 3)) { | |
430 | q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride]; | |
431 | if (q2 && q2 != q1) | |
432 | a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18; | |
433 | } | |
434 | if (a_avail && c_avail && (n != 3)) { | |
435 | int off = mb_pos; | |
436 | if (n != 1) | |
437 | off--; | |
438 | if (n != 2) | |
439 | off -= s->mb_stride; | |
440 | q2 = s->current_picture.qscale_table[off]; | |
441 | if (q2 && q2 != q1) | |
442 | b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18; | |
443 | } | |
444 | ||
445 | if (a_avail && c_avail) { | |
446 | if (abs(a - b) <= abs(b - c)) { | |
447 | pred = c; | |
448 | *dir_ptr = 1; // left | |
449 | } else { | |
450 | pred = a; | |
451 | *dir_ptr = 0; // top | |
452 | } | |
453 | } else if (a_avail) { | |
454 | pred = a; | |
455 | *dir_ptr = 0; // top | |
456 | } else if (c_avail) { | |
457 | pred = c; | |
458 | *dir_ptr = 1; // left | |
459 | } else { | |
460 | pred = 0; | |
461 | *dir_ptr = 1; // left | |
462 | } | |
463 | ||
464 | /* update predictor */ | |
465 | *dc_val_ptr = &dc_val[0]; | |
466 | return pred; | |
467 | } | |
468 | ||
469 | /** @} */ // Block group | |
470 | ||
471 | /** | |
472 | * @name VC1 Macroblock-level functions in Simple/Main Profiles | |
473 | * @see 7.1.4, p91 and 8.1.1.7, p(1)04 | |
474 | * @{ | |
475 | */ | |
476 | ||
477 | static inline int vc1_coded_block_pred(MpegEncContext * s, int n, | |
478 | uint8_t **coded_block_ptr) | |
479 | { | |
480 | int xy, wrap, pred, a, b, c; | |
481 | ||
482 | xy = s->block_index[n]; | |
483 | wrap = s->b8_stride; | |
484 | ||
485 | /* B C | |
486 | * A X | |
487 | */ | |
488 | a = s->coded_block[xy - 1 ]; | |
489 | b = s->coded_block[xy - 1 - wrap]; | |
490 | c = s->coded_block[xy - wrap]; | |
491 | ||
492 | if (b == c) { | |
493 | pred = a; | |
494 | } else { | |
495 | pred = c; | |
496 | } | |
497 | ||
498 | /* store value */ | |
499 | *coded_block_ptr = &s->coded_block[xy]; | |
500 | ||
501 | return pred; | |
502 | } | |
503 | ||
504 | /** | |
505 | * Decode one AC coefficient | |
506 | * @param v The VC1 context | |
507 | * @param last Last coefficient | |
508 | * @param skip How much zero coefficients to skip | |
509 | * @param value Decoded AC coefficient value | |
510 | * @param codingset set of VLC to decode data | |
511 | * @see 8.1.3.4 | |
512 | */ | |
513 | static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, | |
514 | int *value, int codingset) | |
515 | { | |
516 | GetBitContext *gb = &v->s.gb; | |
517 | int index, escape, run = 0, level = 0, lst = 0; | |
518 | ||
519 | index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3); | |
520 | if (index != ff_vc1_ac_sizes[codingset] - 1) { | |
521 | run = vc1_index_decode_table[codingset][index][0]; | |
522 | level = vc1_index_decode_table[codingset][index][1]; | |
523 | lst = index >= vc1_last_decode_table[codingset] || get_bits_left(gb) < 0; | |
524 | if (get_bits1(gb)) | |
525 | level = -level; | |
526 | } else { | |
527 | escape = decode210(gb); | |
528 | if (escape != 2) { | |
529 | index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3); | |
530 | run = vc1_index_decode_table[codingset][index][0]; | |
531 | level = vc1_index_decode_table[codingset][index][1]; | |
532 | lst = index >= vc1_last_decode_table[codingset]; | |
533 | if (escape == 0) { | |
534 | if (lst) | |
535 | level += vc1_last_delta_level_table[codingset][run]; | |
536 | else | |
537 | level += vc1_delta_level_table[codingset][run]; | |
538 | } else { | |
539 | if (lst) | |
540 | run += vc1_last_delta_run_table[codingset][level] + 1; | |
541 | else | |
542 | run += vc1_delta_run_table[codingset][level] + 1; | |
543 | } | |
544 | if (get_bits1(gb)) | |
545 | level = -level; | |
546 | } else { | |
547 | int sign; | |
548 | lst = get_bits1(gb); | |
549 | if (v->s.esc3_level_length == 0) { | |
550 | if (v->pq < 8 || v->dquantfrm) { // table 59 | |
551 | v->s.esc3_level_length = get_bits(gb, 3); | |
552 | if (!v->s.esc3_level_length) | |
553 | v->s.esc3_level_length = get_bits(gb, 2) + 8; | |
554 | } else { // table 60 | |
555 | v->s.esc3_level_length = get_unary(gb, 1, 6) + 2; | |
556 | } | |
557 | v->s.esc3_run_length = 3 + get_bits(gb, 2); | |
558 | } | |
559 | run = get_bits(gb, v->s.esc3_run_length); | |
560 | sign = get_bits1(gb); | |
561 | level = get_bits(gb, v->s.esc3_level_length); | |
562 | if (sign) | |
563 | level = -level; | |
564 | } | |
565 | } | |
566 | ||
567 | *last = lst; | |
568 | *skip = run; | |
569 | *value = level; | |
570 | } | |
571 | ||
572 | /** Decode intra block in intra frames - should be faster than decode_intra_block | |
573 | * @param v VC1Context | |
574 | * @param block block to decode | |
575 | * @param[in] n subblock index | |
576 | * @param coded are AC coeffs present or not | |
577 | * @param codingset set of VLC to decode data | |
578 | */ | |
579 | static int vc1_decode_i_block(VC1Context *v, int16_t block[64], int n, | |
580 | int coded, int codingset) | |
581 | { | |
582 | GetBitContext *gb = &v->s.gb; | |
583 | MpegEncContext *s = &v->s; | |
584 | int dc_pred_dir = 0; /* Direction of the DC prediction used */ | |
585 | int i; | |
586 | int16_t *dc_val; | |
587 | int16_t *ac_val, *ac_val2; | |
588 | int dcdiff; | |
589 | ||
590 | /* Get DC differential */ | |
591 | if (n < 4) { | |
592 | dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); | |
593 | } else { | |
594 | dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); | |
595 | } | |
596 | if (dcdiff < 0) { | |
597 | av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n"); | |
598 | return -1; | |
599 | } | |
600 | if (dcdiff) { | |
601 | if (dcdiff == 119 /* ESC index value */) { | |
602 | /* TODO: Optimize */ | |
603 | if (v->pq == 1) dcdiff = get_bits(gb, 10); | |
604 | else if (v->pq == 2) dcdiff = get_bits(gb, 9); | |
605 | else dcdiff = get_bits(gb, 8); | |
606 | } else { | |
607 | if (v->pq == 1) | |
608 | dcdiff = (dcdiff << 2) + get_bits(gb, 2) - 3; | |
609 | else if (v->pq == 2) | |
610 | dcdiff = (dcdiff << 1) + get_bits1(gb) - 1; | |
611 | } | |
612 | if (get_bits1(gb)) | |
613 | dcdiff = -dcdiff; | |
614 | } | |
615 | ||
616 | /* Prediction */ | |
617 | dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir); | |
618 | *dc_val = dcdiff; | |
619 | ||
620 | /* Store the quantized DC coeff, used for prediction */ | |
621 | if (n < 4) { | |
622 | block[0] = dcdiff * s->y_dc_scale; | |
623 | } else { | |
624 | block[0] = dcdiff * s->c_dc_scale; | |
625 | } | |
626 | /* Skip ? */ | |
627 | if (!coded) { | |
628 | goto not_coded; | |
629 | } | |
630 | ||
631 | // AC Decoding | |
632 | i = 1; | |
633 | ||
634 | { | |
635 | int last = 0, skip, value; | |
636 | const uint8_t *zz_table; | |
637 | int scale; | |
638 | int k; | |
639 | ||
640 | scale = v->pq * 2 + v->halfpq; | |
641 | ||
642 | if (v->s.ac_pred) { | |
643 | if (!dc_pred_dir) | |
644 | zz_table = v->zz_8x8[2]; | |
645 | else | |
646 | zz_table = v->zz_8x8[3]; | |
647 | } else | |
648 | zz_table = v->zz_8x8[1]; | |
649 | ||
650 | ac_val = s->ac_val[0][0] + s->block_index[n] * 16; | |
651 | ac_val2 = ac_val; | |
652 | if (dc_pred_dir) // left | |
653 | ac_val -= 16; | |
654 | else // top | |
655 | ac_val -= 16 * s->block_wrap[n]; | |
656 | ||
657 | while (!last) { | |
658 | vc1_decode_ac_coeff(v, &last, &skip, &value, codingset); | |
659 | i += skip; | |
660 | if (i > 63) | |
661 | break; | |
662 | block[zz_table[i++]] = value; | |
663 | } | |
664 | ||
665 | /* apply AC prediction if needed */ | |
666 | if (s->ac_pred) { | |
667 | if (dc_pred_dir) { // left | |
668 | for (k = 1; k < 8; k++) | |
669 | block[k << v->left_blk_sh] += ac_val[k]; | |
670 | } else { // top | |
671 | for (k = 1; k < 8; k++) | |
672 | block[k << v->top_blk_sh] += ac_val[k + 8]; | |
673 | } | |
674 | } | |
675 | /* save AC coeffs for further prediction */ | |
676 | for (k = 1; k < 8; k++) { | |
677 | ac_val2[k] = block[k << v->left_blk_sh]; | |
678 | ac_val2[k + 8] = block[k << v->top_blk_sh]; | |
679 | } | |
680 | ||
681 | /* scale AC coeffs */ | |
682 | for (k = 1; k < 64; k++) | |
683 | if (block[k]) { | |
684 | block[k] *= scale; | |
685 | if (!v->pquantizer) | |
686 | block[k] += (block[k] < 0) ? -v->pq : v->pq; | |
687 | } | |
688 | ||
689 | if (s->ac_pred) i = 63; | |
690 | } | |
691 | ||
692 | not_coded: | |
693 | if (!coded) { | |
694 | int k, scale; | |
695 | ac_val = s->ac_val[0][0] + s->block_index[n] * 16; | |
696 | ac_val2 = ac_val; | |
697 | ||
698 | i = 0; | |
699 | scale = v->pq * 2 + v->halfpq; | |
700 | memset(ac_val2, 0, 16 * 2); | |
701 | if (dc_pred_dir) { // left | |
702 | ac_val -= 16; | |
703 | if (s->ac_pred) | |
704 | memcpy(ac_val2, ac_val, 8 * 2); | |
705 | } else { // top | |
706 | ac_val -= 16 * s->block_wrap[n]; | |
707 | if (s->ac_pred) | |
708 | memcpy(ac_val2 + 8, ac_val + 8, 8 * 2); | |
709 | } | |
710 | ||
711 | /* apply AC prediction if needed */ | |
712 | if (s->ac_pred) { | |
713 | if (dc_pred_dir) { //left | |
714 | for (k = 1; k < 8; k++) { | |
715 | block[k << v->left_blk_sh] = ac_val[k] * scale; | |
716 | if (!v->pquantizer && block[k << v->left_blk_sh]) | |
717 | block[k << v->left_blk_sh] += (block[k << v->left_blk_sh] < 0) ? -v->pq : v->pq; | |
718 | } | |
719 | } else { // top | |
720 | for (k = 1; k < 8; k++) { | |
721 | block[k << v->top_blk_sh] = ac_val[k + 8] * scale; | |
722 | if (!v->pquantizer && block[k << v->top_blk_sh]) | |
723 | block[k << v->top_blk_sh] += (block[k << v->top_blk_sh] < 0) ? -v->pq : v->pq; | |
724 | } | |
725 | } | |
726 | i = 63; | |
727 | } | |
728 | } | |
729 | s->block_last_index[n] = i; | |
730 | ||
731 | return 0; | |
732 | } | |
733 | ||
734 | /** Decode intra block in intra frames - should be faster than decode_intra_block | |
735 | * @param v VC1Context | |
736 | * @param block block to decode | |
737 | * @param[in] n subblock number | |
738 | * @param coded are AC coeffs present or not | |
739 | * @param codingset set of VLC to decode data | |
740 | * @param mquant quantizer value for this macroblock | |
741 | */ | |
742 | static int vc1_decode_i_block_adv(VC1Context *v, int16_t block[64], int n, | |
743 | int coded, int codingset, int mquant) | |
744 | { | |
745 | GetBitContext *gb = &v->s.gb; | |
746 | MpegEncContext *s = &v->s; | |
747 | int dc_pred_dir = 0; /* Direction of the DC prediction used */ | |
748 | int i; | |
749 | int16_t *dc_val = NULL; | |
750 | int16_t *ac_val, *ac_val2; | |
751 | int dcdiff; | |
752 | int a_avail = v->a_avail, c_avail = v->c_avail; | |
753 | int use_pred = s->ac_pred; | |
754 | int scale; | |
755 | int q1, q2 = 0; | |
756 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; | |
757 | ||
758 | /* Get DC differential */ | |
759 | if (n < 4) { | |
760 | dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); | |
761 | } else { | |
762 | dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); | |
763 | } | |
764 | if (dcdiff < 0) { | |
765 | av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n"); | |
766 | return -1; | |
767 | } | |
768 | if (dcdiff) { | |
769 | if (dcdiff == 119 /* ESC index value */) { | |
770 | /* TODO: Optimize */ | |
771 | if (mquant == 1) dcdiff = get_bits(gb, 10); | |
772 | else if (mquant == 2) dcdiff = get_bits(gb, 9); | |
773 | else dcdiff = get_bits(gb, 8); | |
774 | } else { | |
775 | if (mquant == 1) | |
776 | dcdiff = (dcdiff << 2) + get_bits(gb, 2) - 3; | |
777 | else if (mquant == 2) | |
778 | dcdiff = (dcdiff << 1) + get_bits1(gb) - 1; | |
779 | } | |
780 | if (get_bits1(gb)) | |
781 | dcdiff = -dcdiff; | |
782 | } | |
783 | ||
784 | /* Prediction */ | |
785 | dcdiff += ff_vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir); | |
786 | *dc_val = dcdiff; | |
787 | ||
788 | /* Store the quantized DC coeff, used for prediction */ | |
789 | if (n < 4) { | |
790 | block[0] = dcdiff * s->y_dc_scale; | |
791 | } else { | |
792 | block[0] = dcdiff * s->c_dc_scale; | |
793 | } | |
794 | ||
795 | //AC Decoding | |
796 | i = 1; | |
797 | ||
798 | /* check if AC is needed at all */ | |
799 | if (!a_avail && !c_avail) | |
800 | use_pred = 0; | |
801 | ac_val = s->ac_val[0][0] + s->block_index[n] * 16; | |
802 | ac_val2 = ac_val; | |
803 | ||
804 | scale = mquant * 2 + ((mquant == v->pq) ? v->halfpq : 0); | |
805 | ||
806 | if (dc_pred_dir) // left | |
807 | ac_val -= 16; | |
808 | else // top | |
809 | ac_val -= 16 * s->block_wrap[n]; | |
810 | ||
811 | q1 = s->current_picture.qscale_table[mb_pos]; | |
812 | if ( dc_pred_dir && c_avail && mb_pos) | |
813 | q2 = s->current_picture.qscale_table[mb_pos - 1]; | |
814 | if (!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) | |
815 | q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride]; | |
816 | if ( dc_pred_dir && n == 1) | |
817 | q2 = q1; | |
818 | if (!dc_pred_dir && n == 2) | |
819 | q2 = q1; | |
820 | if (n == 3) | |
821 | q2 = q1; | |
822 | ||
823 | if (coded) { | |
824 | int last = 0, skip, value; | |
825 | const uint8_t *zz_table; | |
826 | int k; | |
827 | ||
828 | if (v->s.ac_pred) { | |
829 | if (!use_pred && v->fcm == ILACE_FRAME) { | |
830 | zz_table = v->zzi_8x8; | |
831 | } else { | |
832 | if (!dc_pred_dir) // top | |
833 | zz_table = v->zz_8x8[2]; | |
834 | else // left | |
835 | zz_table = v->zz_8x8[3]; | |
836 | } | |
837 | } else { | |
838 | if (v->fcm != ILACE_FRAME) | |
839 | zz_table = v->zz_8x8[1]; | |
840 | else | |
841 | zz_table = v->zzi_8x8; | |
842 | } | |
843 | ||
844 | while (!last) { | |
845 | vc1_decode_ac_coeff(v, &last, &skip, &value, codingset); | |
846 | i += skip; | |
847 | if (i > 63) | |
848 | break; | |
849 | block[zz_table[i++]] = value; | |
850 | } | |
851 | ||
852 | /* apply AC prediction if needed */ | |
853 | if (use_pred) { | |
854 | /* scale predictors if needed*/ | |
855 | if (q2 && q1 != q2) { | |
856 | q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; | |
857 | q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; | |
858 | ||
859 | if (q1 < 1) | |
860 | return AVERROR_INVALIDDATA; | |
861 | if (dc_pred_dir) { // left | |
862 | for (k = 1; k < 8; k++) | |
863 | block[k << v->left_blk_sh] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; | |
864 | } else { // top | |
865 | for (k = 1; k < 8; k++) | |
866 | block[k << v->top_blk_sh] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; | |
867 | } | |
868 | } else { | |
869 | if (dc_pred_dir) { //left | |
870 | for (k = 1; k < 8; k++) | |
871 | block[k << v->left_blk_sh] += ac_val[k]; | |
872 | } else { //top | |
873 | for (k = 1; k < 8; k++) | |
874 | block[k << v->top_blk_sh] += ac_val[k + 8]; | |
875 | } | |
876 | } | |
877 | } | |
878 | /* save AC coeffs for further prediction */ | |
879 | for (k = 1; k < 8; k++) { | |
880 | ac_val2[k ] = block[k << v->left_blk_sh]; | |
881 | ac_val2[k + 8] = block[k << v->top_blk_sh]; | |
882 | } | |
883 | ||
884 | /* scale AC coeffs */ | |
885 | for (k = 1; k < 64; k++) | |
886 | if (block[k]) { | |
887 | block[k] *= scale; | |
888 | if (!v->pquantizer) | |
889 | block[k] += (block[k] < 0) ? -mquant : mquant; | |
890 | } | |
891 | ||
892 | if (use_pred) i = 63; | |
893 | } else { // no AC coeffs | |
894 | int k; | |
895 | ||
896 | memset(ac_val2, 0, 16 * 2); | |
897 | if (dc_pred_dir) { // left | |
898 | if (use_pred) { | |
899 | memcpy(ac_val2, ac_val, 8 * 2); | |
900 | if (q2 && q1 != q2) { | |
901 | q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; | |
902 | q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; | |
903 | if (q1 < 1) | |
904 | return AVERROR_INVALIDDATA; | |
905 | for (k = 1; k < 8; k++) | |
906 | ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; | |
907 | } | |
908 | } | |
909 | } else { // top | |
910 | if (use_pred) { | |
911 | memcpy(ac_val2 + 8, ac_val + 8, 8 * 2); | |
912 | if (q2 && q1 != q2) { | |
913 | q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; | |
914 | q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; | |
915 | if (q1 < 1) | |
916 | return AVERROR_INVALIDDATA; | |
917 | for (k = 1; k < 8; k++) | |
918 | ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; | |
919 | } | |
920 | } | |
921 | } | |
922 | ||
923 | /* apply AC prediction if needed */ | |
924 | if (use_pred) { | |
925 | if (dc_pred_dir) { // left | |
926 | for (k = 1; k < 8; k++) { | |
927 | block[k << v->left_blk_sh] = ac_val2[k] * scale; | |
928 | if (!v->pquantizer && block[k << v->left_blk_sh]) | |
929 | block[k << v->left_blk_sh] += (block[k << v->left_blk_sh] < 0) ? -mquant : mquant; | |
930 | } | |
931 | } else { // top | |
932 | for (k = 1; k < 8; k++) { | |
933 | block[k << v->top_blk_sh] = ac_val2[k + 8] * scale; | |
934 | if (!v->pquantizer && block[k << v->top_blk_sh]) | |
935 | block[k << v->top_blk_sh] += (block[k << v->top_blk_sh] < 0) ? -mquant : mquant; | |
936 | } | |
937 | } | |
938 | i = 63; | |
939 | } | |
940 | } | |
941 | s->block_last_index[n] = i; | |
942 | ||
943 | return 0; | |
944 | } | |
945 | ||
946 | /** Decode intra block in inter frames - more generic version than vc1_decode_i_block | |
947 | * @param v VC1Context | |
948 | * @param block block to decode | |
949 | * @param[in] n subblock index | |
950 | * @param coded are AC coeffs present or not | |
951 | * @param mquant block quantizer | |
952 | * @param codingset set of VLC to decode data | |
953 | */ | |
954 | static int vc1_decode_intra_block(VC1Context *v, int16_t block[64], int n, | |
955 | int coded, int mquant, int codingset) | |
956 | { | |
957 | GetBitContext *gb = &v->s.gb; | |
958 | MpegEncContext *s = &v->s; | |
959 | int dc_pred_dir = 0; /* Direction of the DC prediction used */ | |
960 | int i; | |
961 | int16_t *dc_val = NULL; | |
962 | int16_t *ac_val, *ac_val2; | |
963 | int dcdiff; | |
964 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; | |
965 | int a_avail = v->a_avail, c_avail = v->c_avail; | |
966 | int use_pred = s->ac_pred; | |
967 | int scale; | |
968 | int q1, q2 = 0; | |
969 | ||
970 | s->bdsp.clear_block(block); | |
971 | ||
972 | /* XXX: Guard against dumb values of mquant */ | |
973 | mquant = (mquant < 1) ? 0 : ((mquant > 31) ? 31 : mquant); | |
974 | ||
975 | /* Set DC scale - y and c use the same */ | |
976 | s->y_dc_scale = s->y_dc_scale_table[mquant]; | |
977 | s->c_dc_scale = s->c_dc_scale_table[mquant]; | |
978 | ||
979 | /* Get DC differential */ | |
980 | if (n < 4) { | |
981 | dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); | |
982 | } else { | |
983 | dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); | |
984 | } | |
985 | if (dcdiff < 0) { | |
986 | av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n"); | |
987 | return -1; | |
988 | } | |
989 | if (dcdiff) { | |
990 | if (dcdiff == 119 /* ESC index value */) { | |
991 | /* TODO: Optimize */ | |
992 | if (mquant == 1) dcdiff = get_bits(gb, 10); | |
993 | else if (mquant == 2) dcdiff = get_bits(gb, 9); | |
994 | else dcdiff = get_bits(gb, 8); | |
995 | } else { | |
996 | if (mquant == 1) | |
997 | dcdiff = (dcdiff << 2) + get_bits(gb, 2) - 3; | |
998 | else if (mquant == 2) | |
999 | dcdiff = (dcdiff << 1) + get_bits1(gb) - 1; | |
1000 | } | |
1001 | if (get_bits1(gb)) | |
1002 | dcdiff = -dcdiff; | |
1003 | } | |
1004 | ||
1005 | /* Prediction */ | |
1006 | dcdiff += ff_vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir); | |
1007 | *dc_val = dcdiff; | |
1008 | ||
1009 | /* Store the quantized DC coeff, used for prediction */ | |
1010 | ||
1011 | if (n < 4) { | |
1012 | block[0] = dcdiff * s->y_dc_scale; | |
1013 | } else { | |
1014 | block[0] = dcdiff * s->c_dc_scale; | |
1015 | } | |
1016 | ||
1017 | //AC Decoding | |
1018 | i = 1; | |
1019 | ||
1020 | /* check if AC is needed at all and adjust direction if needed */ | |
1021 | if (!a_avail) dc_pred_dir = 1; | |
1022 | if (!c_avail) dc_pred_dir = 0; | |
1023 | if (!a_avail && !c_avail) use_pred = 0; | |
1024 | ac_val = s->ac_val[0][0] + s->block_index[n] * 16; | |
1025 | ac_val2 = ac_val; | |
1026 | ||
1027 | scale = mquant * 2 + v->halfpq; | |
1028 | ||
1029 | if (dc_pred_dir) //left | |
1030 | ac_val -= 16; | |
1031 | else //top | |
1032 | ac_val -= 16 * s->block_wrap[n]; | |
1033 | ||
1034 | q1 = s->current_picture.qscale_table[mb_pos]; | |
1035 | if (dc_pred_dir && c_avail && mb_pos) | |
1036 | q2 = s->current_picture.qscale_table[mb_pos - 1]; | |
1037 | if (!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) | |
1038 | q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride]; | |
1039 | if ( dc_pred_dir && n == 1) | |
1040 | q2 = q1; | |
1041 | if (!dc_pred_dir && n == 2) | |
1042 | q2 = q1; | |
1043 | if (n == 3) q2 = q1; | |
1044 | ||
1045 | if (coded) { | |
1046 | int last = 0, skip, value; | |
1047 | int k; | |
1048 | ||
1049 | while (!last) { | |
1050 | vc1_decode_ac_coeff(v, &last, &skip, &value, codingset); | |
1051 | i += skip; | |
1052 | if (i > 63) | |
1053 | break; | |
1054 | if (v->fcm == PROGRESSIVE) | |
1055 | block[v->zz_8x8[0][i++]] = value; | |
1056 | else { | |
1057 | if (use_pred && (v->fcm == ILACE_FRAME)) { | |
1058 | if (!dc_pred_dir) // top | |
1059 | block[v->zz_8x8[2][i++]] = value; | |
1060 | else // left | |
1061 | block[v->zz_8x8[3][i++]] = value; | |
1062 | } else { | |
1063 | block[v->zzi_8x8[i++]] = value; | |
1064 | } | |
1065 | } | |
1066 | } | |
1067 | ||
1068 | /* apply AC prediction if needed */ | |
1069 | if (use_pred) { | |
1070 | /* scale predictors if needed*/ | |
1071 | if (q2 && q1 != q2) { | |
1072 | q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; | |
1073 | q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; | |
1074 | ||
1075 | if (q1 < 1) | |
1076 | return AVERROR_INVALIDDATA; | |
1077 | if (dc_pred_dir) { // left | |
1078 | for (k = 1; k < 8; k++) | |
1079 | block[k << v->left_blk_sh] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; | |
1080 | } else { //top | |
1081 | for (k = 1; k < 8; k++) | |
1082 | block[k << v->top_blk_sh] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; | |
1083 | } | |
1084 | } else { | |
1085 | if (dc_pred_dir) { // left | |
1086 | for (k = 1; k < 8; k++) | |
1087 | block[k << v->left_blk_sh] += ac_val[k]; | |
1088 | } else { // top | |
1089 | for (k = 1; k < 8; k++) | |
1090 | block[k << v->top_blk_sh] += ac_val[k + 8]; | |
1091 | } | |
1092 | } | |
1093 | } | |
1094 | /* save AC coeffs for further prediction */ | |
1095 | for (k = 1; k < 8; k++) { | |
1096 | ac_val2[k ] = block[k << v->left_blk_sh]; | |
1097 | ac_val2[k + 8] = block[k << v->top_blk_sh]; | |
1098 | } | |
1099 | ||
1100 | /* scale AC coeffs */ | |
1101 | for (k = 1; k < 64; k++) | |
1102 | if (block[k]) { | |
1103 | block[k] *= scale; | |
1104 | if (!v->pquantizer) | |
1105 | block[k] += (block[k] < 0) ? -mquant : mquant; | |
1106 | } | |
1107 | ||
1108 | if (use_pred) i = 63; | |
1109 | } else { // no AC coeffs | |
1110 | int k; | |
1111 | ||
1112 | memset(ac_val2, 0, 16 * 2); | |
1113 | if (dc_pred_dir) { // left | |
1114 | if (use_pred) { | |
1115 | memcpy(ac_val2, ac_val, 8 * 2); | |
1116 | if (q2 && q1 != q2) { | |
1117 | q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; | |
1118 | q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; | |
1119 | if (q1 < 1) | |
1120 | return AVERROR_INVALIDDATA; | |
1121 | for (k = 1; k < 8; k++) | |
1122 | ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; | |
1123 | } | |
1124 | } | |
1125 | } else { // top | |
1126 | if (use_pred) { | |
1127 | memcpy(ac_val2 + 8, ac_val + 8, 8 * 2); | |
1128 | if (q2 && q1 != q2) { | |
1129 | q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; | |
1130 | q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; | |
1131 | if (q1 < 1) | |
1132 | return AVERROR_INVALIDDATA; | |
1133 | for (k = 1; k < 8; k++) | |
1134 | ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; | |
1135 | } | |
1136 | } | |
1137 | } | |
1138 | ||
1139 | /* apply AC prediction if needed */ | |
1140 | if (use_pred) { | |
1141 | if (dc_pred_dir) { // left | |
1142 | for (k = 1; k < 8; k++) { | |
1143 | block[k << v->left_blk_sh] = ac_val2[k] * scale; | |
1144 | if (!v->pquantizer && block[k << v->left_blk_sh]) | |
1145 | block[k << v->left_blk_sh] += (block[k << v->left_blk_sh] < 0) ? -mquant : mquant; | |
1146 | } | |
1147 | } else { // top | |
1148 | for (k = 1; k < 8; k++) { | |
1149 | block[k << v->top_blk_sh] = ac_val2[k + 8] * scale; | |
1150 | if (!v->pquantizer && block[k << v->top_blk_sh]) | |
1151 | block[k << v->top_blk_sh] += (block[k << v->top_blk_sh] < 0) ? -mquant : mquant; | |
1152 | } | |
1153 | } | |
1154 | i = 63; | |
1155 | } | |
1156 | } | |
1157 | s->block_last_index[n] = i; | |
1158 | ||
1159 | return 0; | |
1160 | } | |
1161 | ||
1162 | /** Decode P block | |
1163 | */ | |
1164 | static int vc1_decode_p_block(VC1Context *v, int16_t block[64], int n, | |
1165 | int mquant, int ttmb, int first_block, | |
1166 | uint8_t *dst, int linesize, int skip_block, | |
1167 | int *ttmb_out) | |
1168 | { | |
1169 | MpegEncContext *s = &v->s; | |
1170 | GetBitContext *gb = &s->gb; | |
1171 | int i, j; | |
1172 | int subblkpat = 0; | |
1173 | int scale, off, idx, last, skip, value; | |
1174 | int ttblk = ttmb & 7; | |
1175 | int pat = 0; | |
1176 | ||
1177 | s->bdsp.clear_block(block); | |
1178 | ||
1179 | if (ttmb == -1) { | |
1180 | ttblk = ff_vc1_ttblk_to_tt[v->tt_index][get_vlc2(gb, ff_vc1_ttblk_vlc[v->tt_index].table, VC1_TTBLK_VLC_BITS, 1)]; | |
1181 | } | |
1182 | if (ttblk == TT_4X4) { | |
1183 | subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1); | |
1184 | } | |
1185 | if ((ttblk != TT_8X8 && ttblk != TT_4X4) | |
1186 | && ((v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block)) | |
1187 | || (!v->res_rtm_flag && !first_block))) { | |
1188 | subblkpat = decode012(gb); | |
1189 | if (subblkpat) | |
1190 | subblkpat ^= 3; // swap decoded pattern bits | |
1191 | if (ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) | |
1192 | ttblk = TT_8X4; | |
1193 | if (ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) | |
1194 | ttblk = TT_4X8; | |
1195 | } | |
1196 | scale = 2 * mquant + ((v->pq == mquant) ? v->halfpq : 0); | |
1197 | ||
1198 | // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT | |
1199 | if (ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) { | |
1200 | subblkpat = 2 - (ttblk == TT_8X4_TOP); | |
1201 | ttblk = TT_8X4; | |
1202 | } | |
1203 | if (ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) { | |
1204 | subblkpat = 2 - (ttblk == TT_4X8_LEFT); | |
1205 | ttblk = TT_4X8; | |
1206 | } | |
1207 | switch (ttblk) { | |
1208 | case TT_8X8: | |
1209 | pat = 0xF; | |
1210 | i = 0; | |
1211 | last = 0; | |
1212 | while (!last) { | |
1213 | vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); | |
1214 | i += skip; | |
1215 | if (i > 63) | |
1216 | break; | |
1217 | if (!v->fcm) | |
1218 | idx = v->zz_8x8[0][i++]; | |
1219 | else | |
1220 | idx = v->zzi_8x8[i++]; | |
1221 | block[idx] = value * scale; | |
1222 | if (!v->pquantizer) | |
1223 | block[idx] += (block[idx] < 0) ? -mquant : mquant; | |
1224 | } | |
1225 | if (!skip_block) { | |
1226 | if (i == 1) | |
1227 | v->vc1dsp.vc1_inv_trans_8x8_dc(dst, linesize, block); | |
1228 | else { | |
1229 | v->vc1dsp.vc1_inv_trans_8x8(block); | |
1230 | s->idsp.add_pixels_clamped(block, dst, linesize); | |
1231 | } | |
1232 | } | |
1233 | break; | |
1234 | case TT_4X4: | |
1235 | pat = ~subblkpat & 0xF; | |
1236 | for (j = 0; j < 4; j++) { | |
1237 | last = subblkpat & (1 << (3 - j)); | |
1238 | i = 0; | |
1239 | off = (j & 1) * 4 + (j & 2) * 16; | |
1240 | while (!last) { | |
1241 | vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); | |
1242 | i += skip; | |
1243 | if (i > 15) | |
1244 | break; | |
1245 | if (!v->fcm) | |
1246 | idx = ff_vc1_simple_progressive_4x4_zz[i++]; | |
1247 | else | |
1248 | idx = ff_vc1_adv_interlaced_4x4_zz[i++]; | |
1249 | block[idx + off] = value * scale; | |
1250 | if (!v->pquantizer) | |
1251 | block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant; | |
1252 | } | |
1253 | if (!(subblkpat & (1 << (3 - j))) && !skip_block) { | |
1254 | if (i == 1) | |
1255 | v->vc1dsp.vc1_inv_trans_4x4_dc(dst + (j & 1) * 4 + (j & 2) * 2 * linesize, linesize, block + off); | |
1256 | else | |
1257 | v->vc1dsp.vc1_inv_trans_4x4(dst + (j & 1) * 4 + (j & 2) * 2 * linesize, linesize, block + off); | |
1258 | } | |
1259 | } | |
1260 | break; | |
1261 | case TT_8X4: | |
1262 | pat = ~((subblkpat & 2) * 6 + (subblkpat & 1) * 3) & 0xF; | |
1263 | for (j = 0; j < 2; j++) { | |
1264 | last = subblkpat & (1 << (1 - j)); | |
1265 | i = 0; | |
1266 | off = j * 32; | |
1267 | while (!last) { | |
1268 | vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); | |
1269 | i += skip; | |
1270 | if (i > 31) | |
1271 | break; | |
1272 | if (!v->fcm) | |
1273 | idx = v->zz_8x4[i++] + off; | |
1274 | else | |
1275 | idx = ff_vc1_adv_interlaced_8x4_zz[i++] + off; | |
1276 | block[idx] = value * scale; | |
1277 | if (!v->pquantizer) | |
1278 | block[idx] += (block[idx] < 0) ? -mquant : mquant; | |
1279 | } | |
1280 | if (!(subblkpat & (1 << (1 - j))) && !skip_block) { | |
1281 | if (i == 1) | |
1282 | v->vc1dsp.vc1_inv_trans_8x4_dc(dst + j * 4 * linesize, linesize, block + off); | |
1283 | else | |
1284 | v->vc1dsp.vc1_inv_trans_8x4(dst + j * 4 * linesize, linesize, block + off); | |
1285 | } | |
1286 | } | |
1287 | break; | |
1288 | case TT_4X8: | |
1289 | pat = ~(subblkpat * 5) & 0xF; | |
1290 | for (j = 0; j < 2; j++) { | |
1291 | last = subblkpat & (1 << (1 - j)); | |
1292 | i = 0; | |
1293 | off = j * 4; | |
1294 | while (!last) { | |
1295 | vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); | |
1296 | i += skip; | |
1297 | if (i > 31) | |
1298 | break; | |
1299 | if (!v->fcm) | |
1300 | idx = v->zz_4x8[i++] + off; | |
1301 | else | |
1302 | idx = ff_vc1_adv_interlaced_4x8_zz[i++] + off; | |
1303 | block[idx] = value * scale; | |
1304 | if (!v->pquantizer) | |
1305 | block[idx] += (block[idx] < 0) ? -mquant : mquant; | |
1306 | } | |
1307 | if (!(subblkpat & (1 << (1 - j))) && !skip_block) { | |
1308 | if (i == 1) | |
1309 | v->vc1dsp.vc1_inv_trans_4x8_dc(dst + j * 4, linesize, block + off); | |
1310 | else | |
1311 | v->vc1dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off); | |
1312 | } | |
1313 | } | |
1314 | break; | |
1315 | } | |
1316 | if (ttmb_out) | |
1317 | *ttmb_out |= ttblk << (n * 4); | |
1318 | return pat; | |
1319 | } | |
1320 | ||
1321 | /** @} */ // Macroblock group | |
1322 | ||
1323 | static const int size_table [6] = { 0, 2, 3, 4, 5, 8 }; | |
1324 | static const int offset_table[6] = { 0, 1, 3, 7, 15, 31 }; | |
1325 | ||
1326 | /** Decode one P-frame MB | |
1327 | */ | |
1328 | static int vc1_decode_p_mb(VC1Context *v) | |
1329 | { | |
1330 | MpegEncContext *s = &v->s; | |
1331 | GetBitContext *gb = &s->gb; | |
1332 | int i, j; | |
1333 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; | |
1334 | int cbp; /* cbp decoding stuff */ | |
1335 | int mqdiff, mquant; /* MB quantization */ | |
1336 | int ttmb = v->ttfrm; /* MB Transform type */ | |
1337 | ||
1338 | int mb_has_coeffs = 1; /* last_flag */ | |
1339 | int dmv_x, dmv_y; /* Differential MV components */ | |
1340 | int index, index1; /* LUT indexes */ | |
1341 | int val, sign; /* temp values */ | |
1342 | int first_block = 1; | |
1343 | int dst_idx, off; | |
1344 | int skipped, fourmv; | |
1345 | int block_cbp = 0, pat, block_tt = 0, block_intra = 0; | |
1346 | ||
1347 | mquant = v->pq; /* lossy initialization */ | |
1348 | ||
1349 | if (v->mv_type_is_raw) | |
1350 | fourmv = get_bits1(gb); | |
1351 | else | |
1352 | fourmv = v->mv_type_mb_plane[mb_pos]; | |
1353 | if (v->skip_is_raw) | |
1354 | skipped = get_bits1(gb); | |
1355 | else | |
1356 | skipped = v->s.mbskip_table[mb_pos]; | |
1357 | ||
1358 | if (!fourmv) { /* 1MV mode */ | |
1359 | if (!skipped) { | |
1360 | GET_MVDATA(dmv_x, dmv_y); | |
1361 | ||
1362 | if (s->mb_intra) { | |
1363 | s->current_picture.motion_val[1][s->block_index[0]][0] = 0; | |
1364 | s->current_picture.motion_val[1][s->block_index[0]][1] = 0; | |
1365 | } | |
1366 | s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16; | |
1367 | ff_vc1_pred_mv(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 0, 0); | |
1368 | ||
1369 | /* FIXME Set DC val for inter block ? */ | |
1370 | if (s->mb_intra && !mb_has_coeffs) { | |
1371 | GET_MQUANT(); | |
1372 | s->ac_pred = get_bits1(gb); | |
1373 | cbp = 0; | |
1374 | } else if (mb_has_coeffs) { | |
1375 | if (s->mb_intra) | |
1376 | s->ac_pred = get_bits1(gb); | |
1377 | cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); | |
1378 | GET_MQUANT(); | |
1379 | } else { | |
1380 | mquant = v->pq; | |
1381 | cbp = 0; | |
1382 | } | |
1383 | s->current_picture.qscale_table[mb_pos] = mquant; | |
1384 | ||
1385 | if (!v->ttmbf && !s->mb_intra && mb_has_coeffs) | |
1386 | ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, | |
1387 | VC1_TTMB_VLC_BITS, 2); | |
1388 | if (!s->mb_intra) ff_vc1_mc_1mv(v, 0); | |
1389 | dst_idx = 0; | |
1390 | for (i = 0; i < 6; i++) { | |
1391 | s->dc_val[0][s->block_index[i]] = 0; | |
1392 | dst_idx += i >> 2; | |
1393 | val = ((cbp >> (5 - i)) & 1); | |
1394 | off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); | |
1395 | v->mb_type[0][s->block_index[i]] = s->mb_intra; | |
1396 | if (s->mb_intra) { | |
1397 | /* check if prediction blocks A and C are available */ | |
1398 | v->a_avail = v->c_avail = 0; | |
1399 | if (i == 2 || i == 3 || !s->first_slice_line) | |
1400 | v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; | |
1401 | if (i == 1 || i == 3 || s->mb_x) | |
1402 | v->c_avail = v->mb_type[0][s->block_index[i] - 1]; | |
1403 | ||
1404 | vc1_decode_intra_block(v, s->block[i], i, val, mquant, | |
1405 | (i & 4) ? v->codingset2 : v->codingset); | |
1406 | if ((i>3) && (s->flags & CODEC_FLAG_GRAY)) | |
1407 | continue; | |
1408 | v->vc1dsp.vc1_inv_trans_8x8(s->block[i]); | |
1409 | if (v->rangeredfrm) | |
1410 | for (j = 0; j < 64; j++) | |
1411 | s->block[i][j] <<= 1; | |
1412 | s->idsp.put_signed_pixels_clamped(s->block[i], | |
1413 | s->dest[dst_idx] + off, | |
1414 | i & 4 ? s->uvlinesize | |
1415 | : s->linesize); | |
1416 | if (v->pq >= 9 && v->overlap) { | |
1417 | if (v->c_avail) | |
1418 | v->vc1dsp.vc1_h_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize); | |
1419 | if (v->a_avail) | |
1420 | v->vc1dsp.vc1_v_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize); | |
1421 | } | |
1422 | block_cbp |= 0xF << (i << 2); | |
1423 | block_intra |= 1 << i; | |
1424 | } else if (val) { | |
1425 | pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, | |
1426 | s->dest[dst_idx] + off, (i & 4) ? s->uvlinesize : s->linesize, | |
1427 | (i & 4) && (s->flags & CODEC_FLAG_GRAY), &block_tt); | |
1428 | block_cbp |= pat << (i << 2); | |
1429 | if (!v->ttmbf && ttmb < 8) | |
1430 | ttmb = -1; | |
1431 | first_block = 0; | |
1432 | } | |
1433 | } | |
1434 | } else { // skipped | |
1435 | s->mb_intra = 0; | |
1436 | for (i = 0; i < 6; i++) { | |
1437 | v->mb_type[0][s->block_index[i]] = 0; | |
1438 | s->dc_val[0][s->block_index[i]] = 0; | |
1439 | } | |
1440 | s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP; | |
1441 | s->current_picture.qscale_table[mb_pos] = 0; | |
1442 | ff_vc1_pred_mv(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 0, 0); | |
1443 | ff_vc1_mc_1mv(v, 0); | |
1444 | } | |
1445 | } else { // 4MV mode | |
1446 | if (!skipped /* unskipped MB */) { | |
1447 | int intra_count = 0, coded_inter = 0; | |
1448 | int is_intra[6], is_coded[6]; | |
1449 | /* Get CBPCY */ | |
1450 | cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); | |
1451 | for (i = 0; i < 6; i++) { | |
1452 | val = ((cbp >> (5 - i)) & 1); | |
1453 | s->dc_val[0][s->block_index[i]] = 0; | |
1454 | s->mb_intra = 0; | |
1455 | if (i < 4) { | |
1456 | dmv_x = dmv_y = 0; | |
1457 | s->mb_intra = 0; | |
1458 | mb_has_coeffs = 0; | |
1459 | if (val) { | |
1460 | GET_MVDATA(dmv_x, dmv_y); | |
1461 | } | |
1462 | ff_vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], 0, 0); | |
1463 | if (!s->mb_intra) | |
1464 | ff_vc1_mc_4mv_luma(v, i, 0, 0); | |
1465 | intra_count += s->mb_intra; | |
1466 | is_intra[i] = s->mb_intra; | |
1467 | is_coded[i] = mb_has_coeffs; | |
1468 | } | |
1469 | if (i & 4) { | |
1470 | is_intra[i] = (intra_count >= 3); | |
1471 | is_coded[i] = val; | |
1472 | } | |
1473 | if (i == 4) | |
1474 | ff_vc1_mc_4mv_chroma(v, 0); | |
1475 | v->mb_type[0][s->block_index[i]] = is_intra[i]; | |
1476 | if (!coded_inter) | |
1477 | coded_inter = !is_intra[i] & is_coded[i]; | |
1478 | } | |
1479 | // if there are no coded blocks then don't do anything more | |
1480 | dst_idx = 0; | |
1481 | if (!intra_count && !coded_inter) | |
1482 | goto end; | |
1483 | GET_MQUANT(); | |
1484 | s->current_picture.qscale_table[mb_pos] = mquant; | |
1485 | /* test if block is intra and has pred */ | |
1486 | { | |
1487 | int intrapred = 0; | |
1488 | for (i = 0; i < 6; i++) | |
1489 | if (is_intra[i]) { | |
1490 | if (((!s->first_slice_line || (i == 2 || i == 3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]]) | |
1491 | || ((s->mb_x || (i == 1 || i == 3)) && v->mb_type[0][s->block_index[i] - 1])) { | |
1492 | intrapred = 1; | |
1493 | break; | |
1494 | } | |
1495 | } | |
1496 | if (intrapred) | |
1497 | s->ac_pred = get_bits1(gb); | |
1498 | else | |
1499 | s->ac_pred = 0; | |
1500 | } | |
1501 | if (!v->ttmbf && coded_inter) | |
1502 | ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); | |
1503 | for (i = 0; i < 6; i++) { | |
1504 | dst_idx += i >> 2; | |
1505 | off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); | |
1506 | s->mb_intra = is_intra[i]; | |
1507 | if (is_intra[i]) { | |
1508 | /* check if prediction blocks A and C are available */ | |
1509 | v->a_avail = v->c_avail = 0; | |
1510 | if (i == 2 || i == 3 || !s->first_slice_line) | |
1511 | v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; | |
1512 | if (i == 1 || i == 3 || s->mb_x) | |
1513 | v->c_avail = v->mb_type[0][s->block_index[i] - 1]; | |
1514 | ||
1515 | vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant, | |
1516 | (i & 4) ? v->codingset2 : v->codingset); | |
1517 | if ((i>3) && (s->flags & CODEC_FLAG_GRAY)) | |
1518 | continue; | |
1519 | v->vc1dsp.vc1_inv_trans_8x8(s->block[i]); | |
1520 | if (v->rangeredfrm) | |
1521 | for (j = 0; j < 64; j++) | |
1522 | s->block[i][j] <<= 1; | |
1523 | s->idsp.put_signed_pixels_clamped(s->block[i], | |
1524 | s->dest[dst_idx] + off, | |
1525 | (i & 4) ? s->uvlinesize | |
1526 | : s->linesize); | |
1527 | if (v->pq >= 9 && v->overlap) { | |
1528 | if (v->c_avail) | |
1529 | v->vc1dsp.vc1_h_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize); | |
1530 | if (v->a_avail) | |
1531 | v->vc1dsp.vc1_v_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize); | |
1532 | } | |
1533 | block_cbp |= 0xF << (i << 2); | |
1534 | block_intra |= 1 << i; | |
1535 | } else if (is_coded[i]) { | |
1536 | pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, | |
1537 | first_block, s->dest[dst_idx] + off, | |
1538 | (i & 4) ? s->uvlinesize : s->linesize, | |
1539 | (i & 4) && (s->flags & CODEC_FLAG_GRAY), | |
1540 | &block_tt); | |
1541 | block_cbp |= pat << (i << 2); | |
1542 | if (!v->ttmbf && ttmb < 8) | |
1543 | ttmb = -1; | |
1544 | first_block = 0; | |
1545 | } | |
1546 | } | |
1547 | } else { // skipped MB | |
1548 | s->mb_intra = 0; | |
1549 | s->current_picture.qscale_table[mb_pos] = 0; | |
1550 | for (i = 0; i < 6; i++) { | |
1551 | v->mb_type[0][s->block_index[i]] = 0; | |
1552 | s->dc_val[0][s->block_index[i]] = 0; | |
1553 | } | |
1554 | for (i = 0; i < 4; i++) { | |
1555 | ff_vc1_pred_mv(v, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0], 0, 0); | |
1556 | ff_vc1_mc_4mv_luma(v, i, 0, 0); | |
1557 | } | |
1558 | ff_vc1_mc_4mv_chroma(v, 0); | |
1559 | s->current_picture.qscale_table[mb_pos] = 0; | |
1560 | } | |
1561 | } | |
1562 | end: | |
1563 | v->cbp[s->mb_x] = block_cbp; | |
1564 | v->ttblk[s->mb_x] = block_tt; | |
1565 | v->is_intra[s->mb_x] = block_intra; | |
1566 | ||
1567 | return 0; | |
1568 | } | |
1569 | ||
1570 | /* Decode one macroblock in an interlaced frame p picture */ | |
1571 | ||
1572 | static int vc1_decode_p_mb_intfr(VC1Context *v) | |
1573 | { | |
1574 | MpegEncContext *s = &v->s; | |
1575 | GetBitContext *gb = &s->gb; | |
1576 | int i; | |
1577 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; | |
1578 | int cbp = 0; /* cbp decoding stuff */ | |
1579 | int mqdiff, mquant; /* MB quantization */ | |
1580 | int ttmb = v->ttfrm; /* MB Transform type */ | |
1581 | ||
1582 | int mb_has_coeffs = 1; /* last_flag */ | |
1583 | int dmv_x, dmv_y; /* Differential MV components */ | |
1584 | int val; /* temp value */ | |
1585 | int first_block = 1; | |
1586 | int dst_idx, off; | |
1587 | int skipped, fourmv = 0, twomv = 0; | |
1588 | int block_cbp = 0, pat, block_tt = 0; | |
1589 | int idx_mbmode = 0, mvbp; | |
1590 | int stride_y, fieldtx; | |
1591 | ||
1592 | mquant = v->pq; /* Lossy initialization */ | |
1593 | ||
1594 | if (v->skip_is_raw) | |
1595 | skipped = get_bits1(gb); | |
1596 | else | |
1597 | skipped = v->s.mbskip_table[mb_pos]; | |
1598 | if (!skipped) { | |
1599 | if (v->fourmvswitch) | |
1600 | idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_INTFR_4MV_MBMODE_VLC_BITS, 2); // try getting this done | |
1601 | else | |
1602 | idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2); // in a single line | |
1603 | switch (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0]) { | |
1604 | /* store the motion vector type in a flag (useful later) */ | |
1605 | case MV_PMODE_INTFR_4MV: | |
1606 | fourmv = 1; | |
1607 | v->blk_mv_type[s->block_index[0]] = 0; | |
1608 | v->blk_mv_type[s->block_index[1]] = 0; | |
1609 | v->blk_mv_type[s->block_index[2]] = 0; | |
1610 | v->blk_mv_type[s->block_index[3]] = 0; | |
1611 | break; | |
1612 | case MV_PMODE_INTFR_4MV_FIELD: | |
1613 | fourmv = 1; | |
1614 | v->blk_mv_type[s->block_index[0]] = 1; | |
1615 | v->blk_mv_type[s->block_index[1]] = 1; | |
1616 | v->blk_mv_type[s->block_index[2]] = 1; | |
1617 | v->blk_mv_type[s->block_index[3]] = 1; | |
1618 | break; | |
1619 | case MV_PMODE_INTFR_2MV_FIELD: | |
1620 | twomv = 1; | |
1621 | v->blk_mv_type[s->block_index[0]] = 1; | |
1622 | v->blk_mv_type[s->block_index[1]] = 1; | |
1623 | v->blk_mv_type[s->block_index[2]] = 1; | |
1624 | v->blk_mv_type[s->block_index[3]] = 1; | |
1625 | break; | |
1626 | case MV_PMODE_INTFR_1MV: | |
1627 | v->blk_mv_type[s->block_index[0]] = 0; | |
1628 | v->blk_mv_type[s->block_index[1]] = 0; | |
1629 | v->blk_mv_type[s->block_index[2]] = 0; | |
1630 | v->blk_mv_type[s->block_index[3]] = 0; | |
1631 | break; | |
1632 | } | |
1633 | if (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_INTRA) { // intra MB | |
1634 | for (i = 0; i < 4; i++) { | |
1635 | s->current_picture.motion_val[1][s->block_index[i]][0] = 0; | |
1636 | s->current_picture.motion_val[1][s->block_index[i]][1] = 0; | |
1637 | } | |
1638 | v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1. | |
1639 | s->mb_intra = 1; | |
1640 | s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA; | |
1641 | fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb); | |
1642 | mb_has_coeffs = get_bits1(gb); | |
1643 | if (mb_has_coeffs) | |
1644 | cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); | |
1645 | v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb); | |
1646 | GET_MQUANT(); | |
1647 | s->current_picture.qscale_table[mb_pos] = mquant; | |
1648 | /* Set DC scale - y and c use the same (not sure if necessary here) */ | |
1649 | s->y_dc_scale = s->y_dc_scale_table[mquant]; | |
1650 | s->c_dc_scale = s->c_dc_scale_table[mquant]; | |
1651 | dst_idx = 0; | |
1652 | for (i = 0; i < 6; i++) { | |
1653 | v->a_avail = v->c_avail = 0; | |
1654 | v->mb_type[0][s->block_index[i]] = 1; | |
1655 | s->dc_val[0][s->block_index[i]] = 0; | |
1656 | dst_idx += i >> 2; | |
1657 | val = ((cbp >> (5 - i)) & 1); | |
1658 | if (i == 2 || i == 3 || !s->first_slice_line) | |
1659 | v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; | |
1660 | if (i == 1 || i == 3 || s->mb_x) | |
1661 | v->c_avail = v->mb_type[0][s->block_index[i] - 1]; | |
1662 | ||
1663 | vc1_decode_intra_block(v, s->block[i], i, val, mquant, | |
1664 | (i & 4) ? v->codingset2 : v->codingset); | |
1665 | if ((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue; | |
1666 | v->vc1dsp.vc1_inv_trans_8x8(s->block[i]); | |
1667 | if (i < 4) { | |
1668 | stride_y = s->linesize << fieldtx; | |
1669 | off = (fieldtx) ? ((i & 1) * 8) + ((i & 2) >> 1) * s->linesize : (i & 1) * 8 + 4 * (i & 2) * s->linesize; | |
1670 | } else { | |
1671 | stride_y = s->uvlinesize; | |
1672 | off = 0; | |
1673 | } | |
1674 | s->idsp.put_signed_pixels_clamped(s->block[i], | |
1675 | s->dest[dst_idx] + off, | |
1676 | stride_y); | |
1677 | //TODO: loop filter | |
1678 | } | |
1679 | ||
1680 | } else { // inter MB | |
1681 | mb_has_coeffs = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][3]; | |
1682 | if (mb_has_coeffs) | |
1683 | cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); | |
1684 | if (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) { | |
1685 | v->twomvbp = get_vlc2(gb, v->twomvbp_vlc->table, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1); | |
1686 | } else { | |
1687 | if ((ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_4MV) | |
1688 | || (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_4MV_FIELD)) { | |
1689 | v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1); | |
1690 | } | |
1691 | } | |
1692 | s->mb_intra = v->is_intra[s->mb_x] = 0; | |
1693 | for (i = 0; i < 6; i++) | |
1694 | v->mb_type[0][s->block_index[i]] = 0; | |
1695 | fieldtx = v->fieldtx_plane[mb_pos] = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][1]; | |
1696 | /* for all motion vector read MVDATA and motion compensate each block */ | |
1697 | dst_idx = 0; | |
1698 | if (fourmv) { | |
1699 | mvbp = v->fourmvbp; | |
1700 | for (i = 0; i < 6; i++) { | |
1701 | if (i < 4) { | |
1702 | dmv_x = dmv_y = 0; | |
1703 | val = ((mvbp >> (3 - i)) & 1); | |
1704 | if (val) { | |
1705 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); | |
1706 | } | |
1707 | ff_vc1_pred_mv_intfr(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], 0); | |
1708 | ff_vc1_mc_4mv_luma(v, i, 0, 0); | |
1709 | } else if (i == 4) { | |
1710 | ff_vc1_mc_4mv_chroma4(v, 0, 0, 0); | |
1711 | } | |
1712 | } | |
1713 | } else if (twomv) { | |
1714 | mvbp = v->twomvbp; | |
1715 | dmv_x = dmv_y = 0; | |
1716 | if (mvbp & 2) { | |
1717 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); | |
1718 | } | |
1719 | ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], 0); | |
1720 | ff_vc1_mc_4mv_luma(v, 0, 0, 0); | |
1721 | ff_vc1_mc_4mv_luma(v, 1, 0, 0); | |
1722 | dmv_x = dmv_y = 0; | |
1723 | if (mvbp & 1) { | |
1724 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); | |
1725 | } | |
1726 | ff_vc1_pred_mv_intfr(v, 2, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], 0); | |
1727 | ff_vc1_mc_4mv_luma(v, 2, 0, 0); | |
1728 | ff_vc1_mc_4mv_luma(v, 3, 0, 0); | |
1729 | ff_vc1_mc_4mv_chroma4(v, 0, 0, 0); | |
1730 | } else { | |
1731 | mvbp = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][2]; | |
1732 | dmv_x = dmv_y = 0; | |
1733 | if (mvbp) { | |
1734 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); | |
1735 | } | |
1736 | ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 0); | |
1737 | ff_vc1_mc_1mv(v, 0); | |
1738 | } | |
1739 | if (cbp) | |
1740 | GET_MQUANT(); // p. 227 | |
1741 | s->current_picture.qscale_table[mb_pos] = mquant; | |
1742 | if (!v->ttmbf && cbp) | |
1743 | ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); | |
1744 | for (i = 0; i < 6; i++) { | |
1745 | s->dc_val[0][s->block_index[i]] = 0; | |
1746 | dst_idx += i >> 2; | |
1747 | val = ((cbp >> (5 - i)) & 1); | |
1748 | if (!fieldtx) | |
1749 | off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); | |
1750 | else | |
1751 | off = (i & 4) ? 0 : ((i & 1) * 8 + ((i > 1) * s->linesize)); | |
1752 | if (val) { | |
1753 | pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, | |
1754 | first_block, s->dest[dst_idx] + off, | |
1755 | (i & 4) ? s->uvlinesize : (s->linesize << fieldtx), | |
1756 | (i & 4) && (s->flags & CODEC_FLAG_GRAY), &block_tt); | |
1757 | block_cbp |= pat << (i << 2); | |
1758 | if (!v->ttmbf && ttmb < 8) | |
1759 | ttmb = -1; | |
1760 | first_block = 0; | |
1761 | } | |
1762 | } | |
1763 | } | |
1764 | } else { // skipped | |
1765 | s->mb_intra = v->is_intra[s->mb_x] = 0; | |
1766 | for (i = 0; i < 6; i++) { | |
1767 | v->mb_type[0][s->block_index[i]] = 0; | |
1768 | s->dc_val[0][s->block_index[i]] = 0; | |
1769 | } | |
1770 | s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP; | |
1771 | s->current_picture.qscale_table[mb_pos] = 0; | |
1772 | v->blk_mv_type[s->block_index[0]] = 0; | |
1773 | v->blk_mv_type[s->block_index[1]] = 0; | |
1774 | v->blk_mv_type[s->block_index[2]] = 0; | |
1775 | v->blk_mv_type[s->block_index[3]] = 0; | |
1776 | ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 0); | |
1777 | ff_vc1_mc_1mv(v, 0); | |
1778 | } | |
1779 | if (s->mb_x == s->mb_width - 1) | |
1780 | memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0])*s->mb_stride); | |
1781 | return 0; | |
1782 | } | |
1783 | ||
1784 | static int vc1_decode_p_mb_intfi(VC1Context *v) | |
1785 | { | |
1786 | MpegEncContext *s = &v->s; | |
1787 | GetBitContext *gb = &s->gb; | |
1788 | int i; | |
1789 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; | |
1790 | int cbp = 0; /* cbp decoding stuff */ | |
1791 | int mqdiff, mquant; /* MB quantization */ | |
1792 | int ttmb = v->ttfrm; /* MB Transform type */ | |
1793 | ||
1794 | int mb_has_coeffs = 1; /* last_flag */ | |
1795 | int dmv_x, dmv_y; /* Differential MV components */ | |
1796 | int val; /* temp values */ | |
1797 | int first_block = 1; | |
1798 | int dst_idx, off; | |
1799 | int pred_flag = 0; | |
1800 | int block_cbp = 0, pat, block_tt = 0; | |
1801 | int idx_mbmode = 0; | |
1802 | ||
1803 | mquant = v->pq; /* Lossy initialization */ | |
1804 | ||
1805 | idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_IF_MBMODE_VLC_BITS, 2); | |
1806 | if (idx_mbmode <= 1) { // intra MB | |
1807 | v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1. | |
1808 | s->mb_intra = 1; | |
1809 | s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0; | |
1810 | s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0; | |
1811 | s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA; | |
1812 | GET_MQUANT(); | |
1813 | s->current_picture.qscale_table[mb_pos] = mquant; | |
1814 | /* Set DC scale - y and c use the same (not sure if necessary here) */ | |
1815 | s->y_dc_scale = s->y_dc_scale_table[mquant]; | |
1816 | s->c_dc_scale = s->c_dc_scale_table[mquant]; | |
1817 | v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb); | |
1818 | mb_has_coeffs = idx_mbmode & 1; | |
1819 | if (mb_has_coeffs) | |
1820 | cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_ICBPCY_VLC_BITS, 2); | |
1821 | dst_idx = 0; | |
1822 | for (i = 0; i < 6; i++) { | |
1823 | v->a_avail = v->c_avail = 0; | |
1824 | v->mb_type[0][s->block_index[i]] = 1; | |
1825 | s->dc_val[0][s->block_index[i]] = 0; | |
1826 | dst_idx += i >> 2; | |
1827 | val = ((cbp >> (5 - i)) & 1); | |
1828 | if (i == 2 || i == 3 || !s->first_slice_line) | |
1829 | v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; | |
1830 | if (i == 1 || i == 3 || s->mb_x) | |
1831 | v->c_avail = v->mb_type[0][s->block_index[i] - 1]; | |
1832 | ||
1833 | vc1_decode_intra_block(v, s->block[i], i, val, mquant, | |
1834 | (i & 4) ? v->codingset2 : v->codingset); | |
1835 | if ((i>3) && (s->flags & CODEC_FLAG_GRAY)) | |
1836 | continue; | |
1837 | v->vc1dsp.vc1_inv_trans_8x8(s->block[i]); | |
1838 | off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); | |
1839 | s->idsp.put_signed_pixels_clamped(s->block[i], | |
1840 | s->dest[dst_idx] + off, | |
1841 | (i & 4) ? s->uvlinesize | |
1842 | : s->linesize); | |
1843 | // TODO: loop filter | |
1844 | } | |
1845 | } else { | |
1846 | s->mb_intra = v->is_intra[s->mb_x] = 0; | |
1847 | s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_16x16; | |
1848 | for (i = 0; i < 6; i++) v->mb_type[0][s->block_index[i]] = 0; | |
1849 | if (idx_mbmode <= 5) { // 1-MV | |
1850 | dmv_x = dmv_y = pred_flag = 0; | |
1851 | if (idx_mbmode & 1) { | |
1852 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag); | |
1853 | } | |
1854 | ff_vc1_pred_mv(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], pred_flag, 0); | |
1855 | ff_vc1_mc_1mv(v, 0); | |
1856 | mb_has_coeffs = !(idx_mbmode & 2); | |
1857 | } else { // 4-MV | |
1858 | v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1); | |
1859 | for (i = 0; i < 6; i++) { | |
1860 | if (i < 4) { | |
1861 | dmv_x = dmv_y = pred_flag = 0; | |
1862 | val = ((v->fourmvbp >> (3 - i)) & 1); | |
1863 | if (val) { | |
1864 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag); | |
1865 | } | |
1866 | ff_vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], pred_flag, 0); | |
1867 | ff_vc1_mc_4mv_luma(v, i, 0, 0); | |
1868 | } else if (i == 4) | |
1869 | ff_vc1_mc_4mv_chroma(v, 0); | |
1870 | } | |
1871 | mb_has_coeffs = idx_mbmode & 1; | |
1872 | } | |
1873 | if (mb_has_coeffs) | |
1874 | cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); | |
1875 | if (cbp) { | |
1876 | GET_MQUANT(); | |
1877 | } | |
1878 | s->current_picture.qscale_table[mb_pos] = mquant; | |
1879 | if (!v->ttmbf && cbp) { | |
1880 | ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); | |
1881 | } | |
1882 | dst_idx = 0; | |
1883 | for (i = 0; i < 6; i++) { | |
1884 | s->dc_val[0][s->block_index[i]] = 0; | |
1885 | dst_idx += i >> 2; | |
1886 | val = ((cbp >> (5 - i)) & 1); | |
1887 | off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize; | |
1888 | if (val) { | |
1889 | pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, | |
1890 | first_block, s->dest[dst_idx] + off, | |
1891 | (i & 4) ? s->uvlinesize : s->linesize, | |
1892 | (i & 4) && (s->flags & CODEC_FLAG_GRAY), | |
1893 | &block_tt); | |
1894 | block_cbp |= pat << (i << 2); | |
1895 | if (!v->ttmbf && ttmb < 8) ttmb = -1; | |
1896 | first_block = 0; | |
1897 | } | |
1898 | } | |
1899 | } | |
1900 | if (s->mb_x == s->mb_width - 1) | |
1901 | memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0]) * s->mb_stride); | |
1902 | return 0; | |
1903 | } | |
1904 | ||
1905 | /** Decode one B-frame MB (in Main profile) | |
1906 | */ | |
1907 | static void vc1_decode_b_mb(VC1Context *v) | |
1908 | { | |
1909 | MpegEncContext *s = &v->s; | |
1910 | GetBitContext *gb = &s->gb; | |
1911 | int i, j; | |
1912 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; | |
1913 | int cbp = 0; /* cbp decoding stuff */ | |
1914 | int mqdiff, mquant; /* MB quantization */ | |
1915 | int ttmb = v->ttfrm; /* MB Transform type */ | |
1916 | int mb_has_coeffs = 0; /* last_flag */ | |
1917 | int index, index1; /* LUT indexes */ | |
1918 | int val, sign; /* temp values */ | |
1919 | int first_block = 1; | |
1920 | int dst_idx, off; | |
1921 | int skipped, direct; | |
1922 | int dmv_x[2], dmv_y[2]; | |
1923 | int bmvtype = BMV_TYPE_BACKWARD; | |
1924 | ||
1925 | mquant = v->pq; /* lossy initialization */ | |
1926 | s->mb_intra = 0; | |
1927 | ||
1928 | if (v->dmb_is_raw) | |
1929 | direct = get_bits1(gb); | |
1930 | else | |
1931 | direct = v->direct_mb_plane[mb_pos]; | |
1932 | if (v->skip_is_raw) | |
1933 | skipped = get_bits1(gb); | |
1934 | else | |
1935 | skipped = v->s.mbskip_table[mb_pos]; | |
1936 | ||
1937 | dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0; | |
1938 | for (i = 0; i < 6; i++) { | |
1939 | v->mb_type[0][s->block_index[i]] = 0; | |
1940 | s->dc_val[0][s->block_index[i]] = 0; | |
1941 | } | |
1942 | s->current_picture.qscale_table[mb_pos] = 0; | |
1943 | ||
1944 | if (!direct) { | |
1945 | if (!skipped) { | |
1946 | GET_MVDATA(dmv_x[0], dmv_y[0]); | |
1947 | dmv_x[1] = dmv_x[0]; | |
1948 | dmv_y[1] = dmv_y[0]; | |
1949 | } | |
1950 | if (skipped || !s->mb_intra) { | |
1951 | bmvtype = decode012(gb); | |
1952 | switch (bmvtype) { | |
1953 | case 0: | |
1954 | bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD; | |
1955 | break; | |
1956 | case 1: | |
1957 | bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD; | |
1958 | break; | |
1959 | case 2: | |
1960 | bmvtype = BMV_TYPE_INTERPOLATED; | |
1961 | dmv_x[0] = dmv_y[0] = 0; | |
1962 | } | |
1963 | } | |
1964 | } | |
1965 | for (i = 0; i < 6; i++) | |
1966 | v->mb_type[0][s->block_index[i]] = s->mb_intra; | |
1967 | ||
1968 | if (skipped) { | |
1969 | if (direct) | |
1970 | bmvtype = BMV_TYPE_INTERPOLATED; | |
1971 | ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); | |
1972 | vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); | |
1973 | return; | |
1974 | } | |
1975 | if (direct) { | |
1976 | cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); | |
1977 | GET_MQUANT(); | |
1978 | s->mb_intra = 0; | |
1979 | s->current_picture.qscale_table[mb_pos] = mquant; | |
1980 | if (!v->ttmbf) | |
1981 | ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); | |
1982 | dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0; | |
1983 | ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); | |
1984 | vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); | |
1985 | } else { | |
1986 | if (!mb_has_coeffs && !s->mb_intra) { | |
1987 | /* no coded blocks - effectively skipped */ | |
1988 | ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); | |
1989 | vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); | |
1990 | return; | |
1991 | } | |
1992 | if (s->mb_intra && !mb_has_coeffs) { | |
1993 | GET_MQUANT(); | |
1994 | s->current_picture.qscale_table[mb_pos] = mquant; | |
1995 | s->ac_pred = get_bits1(gb); | |
1996 | cbp = 0; | |
1997 | ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); | |
1998 | } else { | |
1999 | if (bmvtype == BMV_TYPE_INTERPOLATED) { | |
2000 | GET_MVDATA(dmv_x[0], dmv_y[0]); | |
2001 | if (!mb_has_coeffs) { | |
2002 | /* interpolated skipped block */ | |
2003 | ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); | |
2004 | vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); | |
2005 | return; | |
2006 | } | |
2007 | } | |
2008 | ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); | |
2009 | if (!s->mb_intra) { | |
2010 | vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); | |
2011 | } | |
2012 | if (s->mb_intra) | |
2013 | s->ac_pred = get_bits1(gb); | |
2014 | cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); | |
2015 | GET_MQUANT(); | |
2016 | s->current_picture.qscale_table[mb_pos] = mquant; | |
2017 | if (!v->ttmbf && !s->mb_intra && mb_has_coeffs) | |
2018 | ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); | |
2019 | } | |
2020 | } | |
2021 | dst_idx = 0; | |
2022 | for (i = 0; i < 6; i++) { | |
2023 | s->dc_val[0][s->block_index[i]] = 0; | |
2024 | dst_idx += i >> 2; | |
2025 | val = ((cbp >> (5 - i)) & 1); | |
2026 | off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); | |
2027 | v->mb_type[0][s->block_index[i]] = s->mb_intra; | |
2028 | if (s->mb_intra) { | |
2029 | /* check if prediction blocks A and C are available */ | |
2030 | v->a_avail = v->c_avail = 0; | |
2031 | if (i == 2 || i == 3 || !s->first_slice_line) | |
2032 | v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; | |
2033 | if (i == 1 || i == 3 || s->mb_x) | |
2034 | v->c_avail = v->mb_type[0][s->block_index[i] - 1]; | |
2035 | ||
2036 | vc1_decode_intra_block(v, s->block[i], i, val, mquant, | |
2037 | (i & 4) ? v->codingset2 : v->codingset); | |
2038 | if ((i>3) && (s->flags & CODEC_FLAG_GRAY)) | |
2039 | continue; | |
2040 | v->vc1dsp.vc1_inv_trans_8x8(s->block[i]); | |
2041 | if (v->rangeredfrm) | |
2042 | for (j = 0; j < 64; j++) | |
2043 | s->block[i][j] <<= 1; | |
2044 | s->idsp.put_signed_pixels_clamped(s->block[i], | |
2045 | s->dest[dst_idx] + off, | |
2046 | i & 4 ? s->uvlinesize | |
2047 | : s->linesize); | |
2048 | } else if (val) { | |
2049 | vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, | |
2050 | first_block, s->dest[dst_idx] + off, | |
2051 | (i & 4) ? s->uvlinesize : s->linesize, | |
2052 | (i & 4) && (s->flags & CODEC_FLAG_GRAY), NULL); | |
2053 | if (!v->ttmbf && ttmb < 8) | |
2054 | ttmb = -1; | |
2055 | first_block = 0; | |
2056 | } | |
2057 | } | |
2058 | } | |
2059 | ||
2060 | /** Decode one B-frame MB (in interlaced field B picture) | |
2061 | */ | |
2062 | static void vc1_decode_b_mb_intfi(VC1Context *v) | |
2063 | { | |
2064 | MpegEncContext *s = &v->s; | |
2065 | GetBitContext *gb = &s->gb; | |
2066 | int i, j; | |
2067 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; | |
2068 | int cbp = 0; /* cbp decoding stuff */ | |
2069 | int mqdiff, mquant; /* MB quantization */ | |
2070 | int ttmb = v->ttfrm; /* MB Transform type */ | |
2071 | int mb_has_coeffs = 0; /* last_flag */ | |
2072 | int val; /* temp value */ | |
2073 | int first_block = 1; | |
2074 | int dst_idx, off; | |
2075 | int fwd; | |
2076 | int dmv_x[2], dmv_y[2], pred_flag[2]; | |
2077 | int bmvtype = BMV_TYPE_BACKWARD; | |
2078 | int idx_mbmode; | |
2079 | ||
2080 | mquant = v->pq; /* Lossy initialization */ | |
2081 | s->mb_intra = 0; | |
2082 | ||
2083 | idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_IF_MBMODE_VLC_BITS, 2); | |
2084 | if (idx_mbmode <= 1) { // intra MB | |
2085 | v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1. | |
2086 | s->mb_intra = 1; | |
2087 | s->current_picture.motion_val[1][s->block_index[0]][0] = 0; | |
2088 | s->current_picture.motion_val[1][s->block_index[0]][1] = 0; | |
2089 | s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA; | |
2090 | GET_MQUANT(); | |
2091 | s->current_picture.qscale_table[mb_pos] = mquant; | |
2092 | /* Set DC scale - y and c use the same (not sure if necessary here) */ | |
2093 | s->y_dc_scale = s->y_dc_scale_table[mquant]; | |
2094 | s->c_dc_scale = s->c_dc_scale_table[mquant]; | |
2095 | v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb); | |
2096 | mb_has_coeffs = idx_mbmode & 1; | |
2097 | if (mb_has_coeffs) | |
2098 | cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_ICBPCY_VLC_BITS, 2); | |
2099 | dst_idx = 0; | |
2100 | for (i = 0; i < 6; i++) { | |
2101 | v->a_avail = v->c_avail = 0; | |
2102 | v->mb_type[0][s->block_index[i]] = 1; | |
2103 | s->dc_val[0][s->block_index[i]] = 0; | |
2104 | dst_idx += i >> 2; | |
2105 | val = ((cbp >> (5 - i)) & 1); | |
2106 | if (i == 2 || i == 3 || !s->first_slice_line) | |
2107 | v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; | |
2108 | if (i == 1 || i == 3 || s->mb_x) | |
2109 | v->c_avail = v->mb_type[0][s->block_index[i] - 1]; | |
2110 | ||
2111 | vc1_decode_intra_block(v, s->block[i], i, val, mquant, | |
2112 | (i & 4) ? v->codingset2 : v->codingset); | |
2113 | if ((i>3) && (s->flags & CODEC_FLAG_GRAY)) | |
2114 | continue; | |
2115 | v->vc1dsp.vc1_inv_trans_8x8(s->block[i]); | |
2116 | if (v->rangeredfrm) | |
2117 | for (j = 0; j < 64; j++) | |
2118 | s->block[i][j] <<= 1; | |
2119 | off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); | |
2120 | s->idsp.put_signed_pixels_clamped(s->block[i], | |
2121 | s->dest[dst_idx] + off, | |
2122 | (i & 4) ? s->uvlinesize | |
2123 | : s->linesize); | |
2124 | // TODO: yet to perform loop filter | |
2125 | } | |
2126 | } else { | |
2127 | s->mb_intra = v->is_intra[s->mb_x] = 0; | |
2128 | s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_16x16; | |
2129 | for (i = 0; i < 6; i++) v->mb_type[0][s->block_index[i]] = 0; | |
2130 | if (v->fmb_is_raw) | |
2131 | fwd = v->forward_mb_plane[mb_pos] = get_bits1(gb); | |
2132 | else | |
2133 | fwd = v->forward_mb_plane[mb_pos]; | |
2134 | if (idx_mbmode <= 5) { // 1-MV | |
2135 | int interpmvp = 0; | |
2136 | dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0; | |
2137 | pred_flag[0] = pred_flag[1] = 0; | |
2138 | if (fwd) | |
2139 | bmvtype = BMV_TYPE_FORWARD; | |
2140 | else { | |
2141 | bmvtype = decode012(gb); | |
2142 | switch (bmvtype) { | |
2143 | case 0: | |
2144 | bmvtype = BMV_TYPE_BACKWARD; | |
2145 | break; | |
2146 | case 1: | |
2147 | bmvtype = BMV_TYPE_DIRECT; | |
2148 | break; | |
2149 | case 2: | |
2150 | bmvtype = BMV_TYPE_INTERPOLATED; | |
2151 | interpmvp = get_bits1(gb); | |
2152 | } | |
2153 | } | |
2154 | v->bmvtype = bmvtype; | |
2155 | if (bmvtype != BMV_TYPE_DIRECT && idx_mbmode & 1) { | |
2156 | get_mvdata_interlaced(v, &dmv_x[bmvtype == BMV_TYPE_BACKWARD], &dmv_y[bmvtype == BMV_TYPE_BACKWARD], &pred_flag[bmvtype == BMV_TYPE_BACKWARD]); | |
2157 | } | |
2158 | if (interpmvp) { | |
2159 | get_mvdata_interlaced(v, &dmv_x[1], &dmv_y[1], &pred_flag[1]); | |
2160 | } | |
2161 | if (bmvtype == BMV_TYPE_DIRECT) { | |
2162 | dmv_x[0] = dmv_y[0] = pred_flag[0] = 0; | |
2163 | dmv_x[1] = dmv_y[1] = pred_flag[0] = 0; | |
2164 | if (!s->next_picture_ptr->field_picture) { | |
2165 | av_log(s->avctx, AV_LOG_ERROR, "Mixed field/frame direct mode not supported\n"); | |
2166 | return; | |
2167 | } | |
2168 | } | |
2169 | ff_vc1_pred_b_mv_intfi(v, 0, dmv_x, dmv_y, 1, pred_flag); | |
2170 | vc1_b_mc(v, dmv_x, dmv_y, (bmvtype == BMV_TYPE_DIRECT), bmvtype); | |
2171 | mb_has_coeffs = !(idx_mbmode & 2); | |
2172 | } else { // 4-MV | |
2173 | if (fwd) | |
2174 | bmvtype = BMV_TYPE_FORWARD; | |
2175 | v->bmvtype = bmvtype; | |
2176 | v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1); | |
2177 | for (i = 0; i < 6; i++) { | |
2178 | if (i < 4) { | |
2179 | dmv_x[0] = dmv_y[0] = pred_flag[0] = 0; | |
2180 | dmv_x[1] = dmv_y[1] = pred_flag[1] = 0; | |
2181 | val = ((v->fourmvbp >> (3 - i)) & 1); | |
2182 | if (val) { | |
2183 | get_mvdata_interlaced(v, &dmv_x[bmvtype == BMV_TYPE_BACKWARD], | |
2184 | &dmv_y[bmvtype == BMV_TYPE_BACKWARD], | |
2185 | &pred_flag[bmvtype == BMV_TYPE_BACKWARD]); | |
2186 | } | |
2187 | ff_vc1_pred_b_mv_intfi(v, i, dmv_x, dmv_y, 0, pred_flag); | |
2188 | ff_vc1_mc_4mv_luma(v, i, bmvtype == BMV_TYPE_BACKWARD, 0); | |
2189 | } else if (i == 4) | |
2190 | ff_vc1_mc_4mv_chroma(v, bmvtype == BMV_TYPE_BACKWARD); | |
2191 | } | |
2192 | mb_has_coeffs = idx_mbmode & 1; | |
2193 | } | |
2194 | if (mb_has_coeffs) | |
2195 | cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); | |
2196 | if (cbp) { | |
2197 | GET_MQUANT(); | |
2198 | } | |
2199 | s->current_picture.qscale_table[mb_pos] = mquant; | |
2200 | if (!v->ttmbf && cbp) { | |
2201 | ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); | |
2202 | } | |
2203 | dst_idx = 0; | |
2204 | for (i = 0; i < 6; i++) { | |
2205 | s->dc_val[0][s->block_index[i]] = 0; | |
2206 | dst_idx += i >> 2; | |
2207 | val = ((cbp >> (5 - i)) & 1); | |
2208 | off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize; | |
2209 | if (val) { | |
2210 | vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, | |
2211 | first_block, s->dest[dst_idx] + off, | |
2212 | (i & 4) ? s->uvlinesize : s->linesize, | |
2213 | (i & 4) && (s->flags & CODEC_FLAG_GRAY), NULL); | |
2214 | if (!v->ttmbf && ttmb < 8) | |
2215 | ttmb = -1; | |
2216 | first_block = 0; | |
2217 | } | |
2218 | } | |
2219 | } | |
2220 | } | |
2221 | ||
2222 | /** Decode one B-frame MB (in interlaced frame B picture) | |
2223 | */ | |
2224 | static int vc1_decode_b_mb_intfr(VC1Context *v) | |
2225 | { | |
2226 | MpegEncContext *s = &v->s; | |
2227 | GetBitContext *gb = &s->gb; | |
2228 | int i, j; | |
2229 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; | |
2230 | int cbp = 0; /* cbp decoding stuff */ | |
2231 | int mqdiff, mquant; /* MB quantization */ | |
2232 | int ttmb = v->ttfrm; /* MB Transform type */ | |
2233 | int mvsw = 0; /* motion vector switch */ | |
2234 | int mb_has_coeffs = 1; /* last_flag */ | |
2235 | int dmv_x, dmv_y; /* Differential MV components */ | |
2236 | int val; /* temp value */ | |
2237 | int first_block = 1; | |
2238 | int dst_idx, off; | |
2239 | int skipped, direct, twomv = 0; | |
2240 | int block_cbp = 0, pat, block_tt = 0; | |
2241 | int idx_mbmode = 0, mvbp; | |
2242 | int stride_y, fieldtx; | |
2243 | int bmvtype = BMV_TYPE_BACKWARD; | |
2244 | int dir, dir2; | |
2245 | ||
2246 | mquant = v->pq; /* Lossy initialization */ | |
2247 | s->mb_intra = 0; | |
2248 | if (v->skip_is_raw) | |
2249 | skipped = get_bits1(gb); | |
2250 | else | |
2251 | skipped = v->s.mbskip_table[mb_pos]; | |
2252 | ||
2253 | if (!skipped) { | |
2254 | idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2); | |
2255 | if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) { | |
2256 | twomv = 1; | |
2257 | v->blk_mv_type[s->block_index[0]] = 1; | |
2258 | v->blk_mv_type[s->block_index[1]] = 1; | |
2259 | v->blk_mv_type[s->block_index[2]] = 1; | |
2260 | v->blk_mv_type[s->block_index[3]] = 1; | |
2261 | } else { | |
2262 | v->blk_mv_type[s->block_index[0]] = 0; | |
2263 | v->blk_mv_type[s->block_index[1]] = 0; | |
2264 | v->blk_mv_type[s->block_index[2]] = 0; | |
2265 | v->blk_mv_type[s->block_index[3]] = 0; | |
2266 | } | |
2267 | } | |
2268 | ||
2269 | if (v->dmb_is_raw) | |
2270 | direct = get_bits1(gb); | |
2271 | else | |
2272 | direct = v->direct_mb_plane[mb_pos]; | |
2273 | ||
2274 | if (direct) { | |
2275 | if (s->next_picture_ptr->field_picture) | |
2276 | av_log(s->avctx, AV_LOG_WARNING, "Mixed frame/field direct mode not supported\n"); | |
2277 | s->mv[0][0][0] = s->current_picture.motion_val[0][s->block_index[0]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][0], v->bfraction, 0, s->quarter_sample); | |
2278 | s->mv[0][0][1] = s->current_picture.motion_val[0][s->block_index[0]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][1], v->bfraction, 0, s->quarter_sample); | |
2279 | s->mv[1][0][0] = s->current_picture.motion_val[1][s->block_index[0]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][0], v->bfraction, 1, s->quarter_sample); | |
2280 | s->mv[1][0][1] = s->current_picture.motion_val[1][s->block_index[0]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][1], v->bfraction, 1, s->quarter_sample); | |
2281 | ||
2282 | if (twomv) { | |
2283 | s->mv[0][2][0] = s->current_picture.motion_val[0][s->block_index[2]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][0], v->bfraction, 0, s->quarter_sample); | |
2284 | s->mv[0][2][1] = s->current_picture.motion_val[0][s->block_index[2]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][1], v->bfraction, 0, s->quarter_sample); | |
2285 | s->mv[1][2][0] = s->current_picture.motion_val[1][s->block_index[2]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][0], v->bfraction, 1, s->quarter_sample); | |
2286 | s->mv[1][2][1] = s->current_picture.motion_val[1][s->block_index[2]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][1], v->bfraction, 1, s->quarter_sample); | |
2287 | ||
2288 | for (i = 1; i < 4; i += 2) { | |
2289 | s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0] = s->mv[0][i-1][0]; | |
2290 | s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1] = s->mv[0][i-1][1]; | |
2291 | s->mv[1][i][0] = s->current_picture.motion_val[1][s->block_index[i]][0] = s->mv[1][i-1][0]; | |
2292 | s->mv[1][i][1] = s->current_picture.motion_val[1][s->block_index[i]][1] = s->mv[1][i-1][1]; | |
2293 | } | |
2294 | } else { | |
2295 | for (i = 1; i < 4; i++) { | |
2296 | s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0] = s->mv[0][0][0]; | |
2297 | s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1] = s->mv[0][0][1]; | |
2298 | s->mv[1][i][0] = s->current_picture.motion_val[1][s->block_index[i]][0] = s->mv[1][0][0]; | |
2299 | s->mv[1][i][1] = s->current_picture.motion_val[1][s->block_index[i]][1] = s->mv[1][0][1]; | |
2300 | } | |
2301 | } | |
2302 | } | |
2303 | ||
2304 | if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_INTRA) { // intra MB | |
2305 | for (i = 0; i < 4; i++) { | |
2306 | s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0] = 0; | |
2307 | s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1] = 0; | |
2308 | s->mv[1][i][0] = s->current_picture.motion_val[1][s->block_index[i]][0] = 0; | |
2309 | s->mv[1][i][1] = s->current_picture.motion_val[1][s->block_index[i]][1] = 0; | |
2310 | } | |
2311 | v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1. | |
2312 | s->mb_intra = 1; | |
2313 | s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA; | |
2314 | fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb); | |
2315 | mb_has_coeffs = get_bits1(gb); | |
2316 | if (mb_has_coeffs) | |
2317 | cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); | |
2318 | v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb); | |
2319 | GET_MQUANT(); | |
2320 | s->current_picture.qscale_table[mb_pos] = mquant; | |
2321 | /* Set DC scale - y and c use the same (not sure if necessary here) */ | |
2322 | s->y_dc_scale = s->y_dc_scale_table[mquant]; | |
2323 | s->c_dc_scale = s->c_dc_scale_table[mquant]; | |
2324 | dst_idx = 0; | |
2325 | for (i = 0; i < 6; i++) { | |
2326 | v->a_avail = v->c_avail = 0; | |
2327 | v->mb_type[0][s->block_index[i]] = 1; | |
2328 | s->dc_val[0][s->block_index[i]] = 0; | |
2329 | dst_idx += i >> 2; | |
2330 | val = ((cbp >> (5 - i)) & 1); | |
2331 | if (i == 2 || i == 3 || !s->first_slice_line) | |
2332 | v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; | |
2333 | if (i == 1 || i == 3 || s->mb_x) | |
2334 | v->c_avail = v->mb_type[0][s->block_index[i] - 1]; | |
2335 | ||
2336 | vc1_decode_intra_block(v, s->block[i], i, val, mquant, | |
2337 | (i & 4) ? v->codingset2 : v->codingset); | |
2338 | if (i > 3 && (s->flags & CODEC_FLAG_GRAY)) | |
2339 | continue; | |
2340 | v->vc1dsp.vc1_inv_trans_8x8(s->block[i]); | |
2341 | if (i < 4) { | |
2342 | stride_y = s->linesize << fieldtx; | |
2343 | off = (fieldtx) ? ((i & 1) * 8) + ((i & 2) >> 1) * s->linesize : (i & 1) * 8 + 4 * (i & 2) * s->linesize; | |
2344 | } else { | |
2345 | stride_y = s->uvlinesize; | |
2346 | off = 0; | |
2347 | } | |
2348 | s->idsp.put_signed_pixels_clamped(s->block[i], | |
2349 | s->dest[dst_idx] + off, | |
2350 | stride_y); | |
2351 | } | |
2352 | } else { | |
2353 | s->mb_intra = v->is_intra[s->mb_x] = 0; | |
2354 | if (!direct) { | |
2355 | if (skipped || !s->mb_intra) { | |
2356 | bmvtype = decode012(gb); | |
2357 | switch (bmvtype) { | |
2358 | case 0: | |
2359 | bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD; | |
2360 | break; | |
2361 | case 1: | |
2362 | bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD; | |
2363 | break; | |
2364 | case 2: | |
2365 | bmvtype = BMV_TYPE_INTERPOLATED; | |
2366 | } | |
2367 | } | |
2368 | ||
2369 | if (twomv && bmvtype != BMV_TYPE_INTERPOLATED) | |
2370 | mvsw = get_bits1(gb); | |
2371 | } | |
2372 | ||
2373 | if (!skipped) { // inter MB | |
2374 | mb_has_coeffs = ff_vc1_mbmode_intfrp[0][idx_mbmode][3]; | |
2375 | if (mb_has_coeffs) | |
2376 | cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); | |
2377 | if (!direct) { | |
2378 | if (bmvtype == BMV_TYPE_INTERPOLATED && twomv) { | |
2379 | v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1); | |
2380 | } else if (bmvtype == BMV_TYPE_INTERPOLATED || twomv) { | |
2381 | v->twomvbp = get_vlc2(gb, v->twomvbp_vlc->table, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1); | |
2382 | } | |
2383 | } | |
2384 | ||
2385 | for (i = 0; i < 6; i++) | |
2386 | v->mb_type[0][s->block_index[i]] = 0; | |
2387 | fieldtx = v->fieldtx_plane[mb_pos] = ff_vc1_mbmode_intfrp[0][idx_mbmode][1]; | |
2388 | /* for all motion vector read MVDATA and motion compensate each block */ | |
2389 | dst_idx = 0; | |
2390 | if (direct) { | |
2391 | if (twomv) { | |
2392 | for (i = 0; i < 4; i++) { | |
2393 | ff_vc1_mc_4mv_luma(v, i, 0, 0); | |
2394 | ff_vc1_mc_4mv_luma(v, i, 1, 1); | |
2395 | } | |
2396 | ff_vc1_mc_4mv_chroma4(v, 0, 0, 0); | |
2397 | ff_vc1_mc_4mv_chroma4(v, 1, 1, 1); | |
2398 | } else { | |
2399 | ff_vc1_mc_1mv(v, 0); | |
2400 | ff_vc1_interp_mc(v); | |
2401 | } | |
2402 | } else if (twomv && bmvtype == BMV_TYPE_INTERPOLATED) { | |
2403 | mvbp = v->fourmvbp; | |
2404 | for (i = 0; i < 4; i++) { | |
2405 | dir = i==1 || i==3; | |
2406 | dmv_x = dmv_y = 0; | |
2407 | val = ((mvbp >> (3 - i)) & 1); | |
2408 | if (val) | |
2409 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); | |
2410 | j = i > 1 ? 2 : 0; | |
2411 | ff_vc1_pred_mv_intfr(v, j, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], dir); | |
2412 | ff_vc1_mc_4mv_luma(v, j, dir, dir); | |
2413 | ff_vc1_mc_4mv_luma(v, j+1, dir, dir); | |
2414 | } | |
2415 | ||
2416 | ff_vc1_mc_4mv_chroma4(v, 0, 0, 0); | |
2417 | ff_vc1_mc_4mv_chroma4(v, 1, 1, 1); | |
2418 | } else if (bmvtype == BMV_TYPE_INTERPOLATED) { | |
2419 | mvbp = v->twomvbp; | |
2420 | dmv_x = dmv_y = 0; | |
2421 | if (mvbp & 2) | |
2422 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); | |
2423 | ||
2424 | ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 0); | |
2425 | ff_vc1_mc_1mv(v, 0); | |
2426 | ||
2427 | dmv_x = dmv_y = 0; | |
2428 | if (mvbp & 1) | |
2429 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); | |
2430 | ||
2431 | ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 1); | |
2432 | ff_vc1_interp_mc(v); | |
2433 | } else if (twomv) { | |
2434 | dir = bmvtype == BMV_TYPE_BACKWARD; | |
2435 | dir2 = dir; | |
2436 | if (mvsw) | |
2437 | dir2 = !dir; | |
2438 | mvbp = v->twomvbp; | |
2439 | dmv_x = dmv_y = 0; | |
2440 | if (mvbp & 2) | |
2441 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); | |
2442 | ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], dir); | |
2443 | ||
2444 | dmv_x = dmv_y = 0; | |
2445 | if (mvbp & 1) | |
2446 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); | |
2447 | ff_vc1_pred_mv_intfr(v, 2, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], dir2); | |
2448 | ||
2449 | if (mvsw) { | |
2450 | for (i = 0; i < 2; i++) { | |
2451 | s->mv[dir][i+2][0] = s->mv[dir][i][0] = s->current_picture.motion_val[dir][s->block_index[i+2]][0] = s->current_picture.motion_val[dir][s->block_index[i]][0]; | |
2452 | s->mv[dir][i+2][1] = s->mv[dir][i][1] = s->current_picture.motion_val[dir][s->block_index[i+2]][1] = s->current_picture.motion_val[dir][s->block_index[i]][1]; | |
2453 | s->mv[dir2][i+2][0] = s->mv[dir2][i][0] = s->current_picture.motion_val[dir2][s->block_index[i]][0] = s->current_picture.motion_val[dir2][s->block_index[i+2]][0]; | |
2454 | s->mv[dir2][i+2][1] = s->mv[dir2][i][1] = s->current_picture.motion_val[dir2][s->block_index[i]][1] = s->current_picture.motion_val[dir2][s->block_index[i+2]][1]; | |
2455 | } | |
2456 | } else { | |
2457 | ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, v->mb_type[0], !dir); | |
2458 | ff_vc1_pred_mv_intfr(v, 2, 0, 0, 2, v->range_x, v->range_y, v->mb_type[0], !dir); | |
2459 | } | |
2460 | ||
2461 | ff_vc1_mc_4mv_luma(v, 0, dir, 0); | |
2462 | ff_vc1_mc_4mv_luma(v, 1, dir, 0); | |
2463 | ff_vc1_mc_4mv_luma(v, 2, dir2, 0); | |
2464 | ff_vc1_mc_4mv_luma(v, 3, dir2, 0); | |
2465 | ff_vc1_mc_4mv_chroma4(v, dir, dir2, 0); | |
2466 | } else { | |
2467 | dir = bmvtype == BMV_TYPE_BACKWARD; | |
2468 | ||
2469 | mvbp = ff_vc1_mbmode_intfrp[0][idx_mbmode][2]; | |
2470 | dmv_x = dmv_y = 0; | |
2471 | if (mvbp) | |
2472 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); | |
2473 | ||
2474 | ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], dir); | |
2475 | v->blk_mv_type[s->block_index[0]] = 1; | |
2476 | v->blk_mv_type[s->block_index[1]] = 1; | |
2477 | v->blk_mv_type[s->block_index[2]] = 1; | |
2478 | v->blk_mv_type[s->block_index[3]] = 1; | |
2479 | ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, 0, !dir); | |
2480 | for (i = 0; i < 2; i++) { | |
2481 | s->mv[!dir][i+2][0] = s->mv[!dir][i][0] = s->current_picture.motion_val[!dir][s->block_index[i+2]][0] = s->current_picture.motion_val[!dir][s->block_index[i]][0]; | |
2482 | s->mv[!dir][i+2][1] = s->mv[!dir][i][1] = s->current_picture.motion_val[!dir][s->block_index[i+2]][1] = s->current_picture.motion_val[!dir][s->block_index[i]][1]; | |
2483 | } | |
2484 | ff_vc1_mc_1mv(v, dir); | |
2485 | } | |
2486 | ||
2487 | if (cbp) | |
2488 | GET_MQUANT(); // p. 227 | |
2489 | s->current_picture.qscale_table[mb_pos] = mquant; | |
2490 | if (!v->ttmbf && cbp) | |
2491 | ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); | |
2492 | for (i = 0; i < 6; i++) { | |
2493 | s->dc_val[0][s->block_index[i]] = 0; | |
2494 | dst_idx += i >> 2; | |
2495 | val = ((cbp >> (5 - i)) & 1); | |
2496 | if (!fieldtx) | |
2497 | off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); | |
2498 | else | |
2499 | off = (i & 4) ? 0 : ((i & 1) * 8 + ((i > 1) * s->linesize)); | |
2500 | if (val) { | |
2501 | pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, | |
2502 | first_block, s->dest[dst_idx] + off, | |
2503 | (i & 4) ? s->uvlinesize : (s->linesize << fieldtx), | |
2504 | (i & 4) && (s->flags & CODEC_FLAG_GRAY), &block_tt); | |
2505 | block_cbp |= pat << (i << 2); | |
2506 | if (!v->ttmbf && ttmb < 8) | |
2507 | ttmb = -1; | |
2508 | first_block = 0; | |
2509 | } | |
2510 | } | |
2511 | ||
2512 | } else { // skipped | |
2513 | dir = 0; | |
2514 | for (i = 0; i < 6; i++) { | |
2515 | v->mb_type[0][s->block_index[i]] = 0; | |
2516 | s->dc_val[0][s->block_index[i]] = 0; | |
2517 | } | |
2518 | s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP; | |
2519 | s->current_picture.qscale_table[mb_pos] = 0; | |
2520 | v->blk_mv_type[s->block_index[0]] = 0; | |
2521 | v->blk_mv_type[s->block_index[1]] = 0; | |
2522 | v->blk_mv_type[s->block_index[2]] = 0; | |
2523 | v->blk_mv_type[s->block_index[3]] = 0; | |
2524 | ||
2525 | if (!direct) { | |
2526 | if (bmvtype == BMV_TYPE_INTERPOLATED) { | |
2527 | ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 0); | |
2528 | ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 1); | |
2529 | } else { | |
2530 | dir = bmvtype == BMV_TYPE_BACKWARD; | |
2531 | ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], dir); | |
2532 | if (mvsw) { | |
2533 | int dir2 = dir; | |
2534 | if (mvsw) | |
2535 | dir2 = !dir; | |
2536 | for (i = 0; i < 2; i++) { | |
2537 | s->mv[dir][i+2][0] = s->mv[dir][i][0] = s->current_picture.motion_val[dir][s->block_index[i+2]][0] = s->current_picture.motion_val[dir][s->block_index[i]][0]; | |
2538 | s->mv[dir][i+2][1] = s->mv[dir][i][1] = s->current_picture.motion_val[dir][s->block_index[i+2]][1] = s->current_picture.motion_val[dir][s->block_index[i]][1]; | |
2539 | s->mv[dir2][i+2][0] = s->mv[dir2][i][0] = s->current_picture.motion_val[dir2][s->block_index[i]][0] = s->current_picture.motion_val[dir2][s->block_index[i+2]][0]; | |
2540 | s->mv[dir2][i+2][1] = s->mv[dir2][i][1] = s->current_picture.motion_val[dir2][s->block_index[i]][1] = s->current_picture.motion_val[dir2][s->block_index[i+2]][1]; | |
2541 | } | |
2542 | } else { | |
2543 | v->blk_mv_type[s->block_index[0]] = 1; | |
2544 | v->blk_mv_type[s->block_index[1]] = 1; | |
2545 | v->blk_mv_type[s->block_index[2]] = 1; | |
2546 | v->blk_mv_type[s->block_index[3]] = 1; | |
2547 | ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, 0, !dir); | |
2548 | for (i = 0; i < 2; i++) { | |
2549 | s->mv[!dir][i+2][0] = s->mv[!dir][i][0] = s->current_picture.motion_val[!dir][s->block_index[i+2]][0] = s->current_picture.motion_val[!dir][s->block_index[i]][0]; | |
2550 | s->mv[!dir][i+2][1] = s->mv[!dir][i][1] = s->current_picture.motion_val[!dir][s->block_index[i+2]][1] = s->current_picture.motion_val[!dir][s->block_index[i]][1]; | |
2551 | } | |
2552 | } | |
2553 | } | |
2554 | } | |
2555 | ||
2556 | ff_vc1_mc_1mv(v, dir); | |
2557 | if (direct || bmvtype == BMV_TYPE_INTERPOLATED) { | |
2558 | ff_vc1_interp_mc(v); | |
2559 | } | |
2560 | } | |
2561 | } | |
2562 | if (s->mb_x == s->mb_width - 1) | |
2563 | memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0]) * s->mb_stride); | |
2564 | v->cbp[s->mb_x] = block_cbp; | |
2565 | v->ttblk[s->mb_x] = block_tt; | |
2566 | return 0; | |
2567 | } | |
2568 | ||
2569 | /** Decode blocks of I-frame | |
2570 | */ | |
2571 | static void vc1_decode_i_blocks(VC1Context *v) | |
2572 | { | |
2573 | int k, j; | |
2574 | MpegEncContext *s = &v->s; | |
2575 | int cbp, val; | |
2576 | uint8_t *coded_val; | |
2577 | int mb_pos; | |
2578 | ||
2579 | /* select codingmode used for VLC tables selection */ | |
2580 | switch (v->y_ac_table_index) { | |
2581 | case 0: | |
2582 | v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA; | |
2583 | break; | |
2584 | case 1: | |
2585 | v->codingset = CS_HIGH_MOT_INTRA; | |
2586 | break; | |
2587 | case 2: | |
2588 | v->codingset = CS_MID_RATE_INTRA; | |
2589 | break; | |
2590 | } | |
2591 | ||
2592 | switch (v->c_ac_table_index) { | |
2593 | case 0: | |
2594 | v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER; | |
2595 | break; | |
2596 | case 1: | |
2597 | v->codingset2 = CS_HIGH_MOT_INTER; | |
2598 | break; | |
2599 | case 2: | |
2600 | v->codingset2 = CS_MID_RATE_INTER; | |
2601 | break; | |
2602 | } | |
2603 | ||
2604 | /* Set DC scale - y and c use the same */ | |
2605 | s->y_dc_scale = s->y_dc_scale_table[v->pq]; | |
2606 | s->c_dc_scale = s->c_dc_scale_table[v->pq]; | |
2607 | ||
2608 | //do frame decode | |
2609 | s->mb_x = s->mb_y = 0; | |
2610 | s->mb_intra = 1; | |
2611 | s->first_slice_line = 1; | |
2612 | for (s->mb_y = 0; s->mb_y < s->end_mb_y; s->mb_y++) { | |
2613 | s->mb_x = 0; | |
2614 | init_block_index(v); | |
2615 | for (; s->mb_x < v->end_mb_x; s->mb_x++) { | |
2616 | uint8_t *dst[6]; | |
2617 | ff_update_block_index(s); | |
2618 | dst[0] = s->dest[0]; | |
2619 | dst[1] = dst[0] + 8; | |
2620 | dst[2] = s->dest[0] + s->linesize * 8; | |
2621 | dst[3] = dst[2] + 8; | |
2622 | dst[4] = s->dest[1]; | |
2623 | dst[5] = s->dest[2]; | |
2624 | s->bdsp.clear_blocks(s->block[0]); | |
2625 | mb_pos = s->mb_x + s->mb_y * s->mb_width; | |
2626 | s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA; | |
2627 | s->current_picture.qscale_table[mb_pos] = v->pq; | |
2628 | s->current_picture.motion_val[1][s->block_index[0]][0] = 0; | |
2629 | s->current_picture.motion_val[1][s->block_index[0]][1] = 0; | |
2630 | ||
2631 | // do actual MB decoding and displaying | |
2632 | cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2); | |
2633 | v->s.ac_pred = get_bits1(&v->s.gb); | |
2634 | ||
2635 | for (k = 0; k < 6; k++) { | |
2636 | val = ((cbp >> (5 - k)) & 1); | |
2637 | ||
2638 | if (k < 4) { | |
2639 | int pred = vc1_coded_block_pred(&v->s, k, &coded_val); | |
2640 | val = val ^ pred; | |
2641 | *coded_val = val; | |
2642 | } | |
2643 | cbp |= val << (5 - k); | |
2644 | ||
2645 | vc1_decode_i_block(v, s->block[k], k, val, (k < 4) ? v->codingset : v->codingset2); | |
2646 | ||
2647 | if (k > 3 && (s->flags & CODEC_FLAG_GRAY)) | |
2648 | continue; | |
2649 | v->vc1dsp.vc1_inv_trans_8x8(s->block[k]); | |
2650 | if (v->pq >= 9 && v->overlap) { | |
2651 | if (v->rangeredfrm) | |
2652 | for (j = 0; j < 64; j++) | |
2653 | s->block[k][j] <<= 1; | |
2654 | s->idsp.put_signed_pixels_clamped(s->block[k], dst[k], | |
2655 | k & 4 ? s->uvlinesize | |
2656 | : s->linesize); | |
2657 | } else { | |
2658 | if (v->rangeredfrm) | |
2659 | for (j = 0; j < 64; j++) | |
2660 | s->block[k][j] = (s->block[k][j] - 64) << 1; | |
2661 | s->idsp.put_pixels_clamped(s->block[k], dst[k], | |
2662 | k & 4 ? s->uvlinesize | |
2663 | : s->linesize); | |
2664 | } | |
2665 | } | |
2666 | ||
2667 | if (v->pq >= 9 && v->overlap) { | |
2668 | if (s->mb_x) { | |
2669 | v->vc1dsp.vc1_h_overlap(s->dest[0], s->linesize); | |
2670 | v->vc1dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize); | |
2671 | if (!(s->flags & CODEC_FLAG_GRAY)) { | |
2672 | v->vc1dsp.vc1_h_overlap(s->dest[1], s->uvlinesize); | |
2673 | v->vc1dsp.vc1_h_overlap(s->dest[2], s->uvlinesize); | |
2674 | } | |
2675 | } | |
2676 | v->vc1dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize); | |
2677 | v->vc1dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize); | |
2678 | if (!s->first_slice_line) { | |
2679 | v->vc1dsp.vc1_v_overlap(s->dest[0], s->linesize); | |
2680 | v->vc1dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize); | |
2681 | if (!(s->flags & CODEC_FLAG_GRAY)) { | |
2682 | v->vc1dsp.vc1_v_overlap(s->dest[1], s->uvlinesize); | |
2683 | v->vc1dsp.vc1_v_overlap(s->dest[2], s->uvlinesize); | |
2684 | } | |
2685 | } | |
2686 | v->vc1dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize); | |
2687 | v->vc1dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize); | |
2688 | } | |
2689 | if (v->s.loop_filter) | |
2690 | ff_vc1_loop_filter_iblk(v, v->pq); | |
2691 | ||
2692 | if (get_bits_count(&s->gb) > v->bits) { | |
2693 | ff_er_add_slice(&s->er, 0, 0, s->mb_x, s->mb_y, ER_MB_ERROR); | |
2694 | av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", | |
2695 | get_bits_count(&s->gb), v->bits); | |
2696 | return; | |
2697 | } | |
2698 | } | |
2699 | if (!v->s.loop_filter) | |
2700 | ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16); | |
2701 | else if (s->mb_y) | |
2702 | ff_mpeg_draw_horiz_band(s, (s->mb_y - 1) * 16, 16); | |
2703 | ||
2704 | s->first_slice_line = 0; | |
2705 | } | |
2706 | if (v->s.loop_filter) | |
2707 | ff_mpeg_draw_horiz_band(s, (s->end_mb_y - 1) * 16, 16); | |
2708 | ||
2709 | /* This is intentionally mb_height and not end_mb_y - unlike in advanced | |
2710 | * profile, these only differ are when decoding MSS2 rectangles. */ | |
2711 | ff_er_add_slice(&s->er, 0, 0, s->mb_width - 1, s->mb_height - 1, ER_MB_END); | |
2712 | } | |
2713 | ||
2714 | /** Decode blocks of I-frame for advanced profile | |
2715 | */ | |
2716 | static void vc1_decode_i_blocks_adv(VC1Context *v) | |
2717 | { | |
2718 | int k; | |
2719 | MpegEncContext *s = &v->s; | |
2720 | int cbp, val; | |
2721 | uint8_t *coded_val; | |
2722 | int mb_pos; | |
2723 | int mquant = v->pq; | |
2724 | int mqdiff; | |
2725 | GetBitContext *gb = &s->gb; | |
2726 | ||
2727 | /* select codingmode used for VLC tables selection */ | |
2728 | switch (v->y_ac_table_index) { | |
2729 | case 0: | |
2730 | v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA; | |
2731 | break; | |
2732 | case 1: | |
2733 | v->codingset = CS_HIGH_MOT_INTRA; | |
2734 | break; | |
2735 | case 2: | |
2736 | v->codingset = CS_MID_RATE_INTRA; | |
2737 | break; | |
2738 | } | |
2739 | ||
2740 | switch (v->c_ac_table_index) { | |
2741 | case 0: | |
2742 | v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER; | |
2743 | break; | |
2744 | case 1: | |
2745 | v->codingset2 = CS_HIGH_MOT_INTER; | |
2746 | break; | |
2747 | case 2: | |
2748 | v->codingset2 = CS_MID_RATE_INTER; | |
2749 | break; | |
2750 | } | |
2751 | ||
2752 | // do frame decode | |
2753 | s->mb_x = s->mb_y = 0; | |
2754 | s->mb_intra = 1; | |
2755 | s->first_slice_line = 1; | |
2756 | s->mb_y = s->start_mb_y; | |
2757 | if (s->start_mb_y) { | |
2758 | s->mb_x = 0; | |
2759 | init_block_index(v); | |
2760 | memset(&s->coded_block[s->block_index[0] - s->b8_stride], 0, | |
2761 | (1 + s->b8_stride) * sizeof(*s->coded_block)); | |
2762 | } | |
2763 | for (; s->mb_y < s->end_mb_y; s->mb_y++) { | |
2764 | s->mb_x = 0; | |
2765 | init_block_index(v); | |
2766 | for (;s->mb_x < s->mb_width; s->mb_x++) { | |
2767 | int16_t (*block)[64] = v->block[v->cur_blk_idx]; | |
2768 | ff_update_block_index(s); | |
2769 | s->bdsp.clear_blocks(block[0]); | |
2770 | mb_pos = s->mb_x + s->mb_y * s->mb_stride; | |
2771 | s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA; | |
2772 | s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0; | |
2773 | s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0; | |
2774 | ||
2775 | // do actual MB decoding and displaying | |
2776 | if (v->fieldtx_is_raw) | |
2777 | v->fieldtx_plane[mb_pos] = get_bits1(&v->s.gb); | |
2778 | cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2); | |
2779 | if ( v->acpred_is_raw) | |
2780 | v->s.ac_pred = get_bits1(&v->s.gb); | |
2781 | else | |
2782 | v->s.ac_pred = v->acpred_plane[mb_pos]; | |
2783 | ||
2784 | if (v->condover == CONDOVER_SELECT && v->overflg_is_raw) | |
2785 | v->over_flags_plane[mb_pos] = get_bits1(&v->s.gb); | |
2786 | ||
2787 | GET_MQUANT(); | |
2788 | ||
2789 | s->current_picture.qscale_table[mb_pos] = mquant; | |
2790 | /* Set DC scale - y and c use the same */ | |
2791 | s->y_dc_scale = s->y_dc_scale_table[mquant]; | |
2792 | s->c_dc_scale = s->c_dc_scale_table[mquant]; | |
2793 | ||
2794 | for (k = 0; k < 6; k++) { | |
2795 | val = ((cbp >> (5 - k)) & 1); | |
2796 | ||
2797 | if (k < 4) { | |
2798 | int pred = vc1_coded_block_pred(&v->s, k, &coded_val); | |
2799 | val = val ^ pred; | |
2800 | *coded_val = val; | |
2801 | } | |
2802 | cbp |= val << (5 - k); | |
2803 | ||
2804 | v->a_avail = !s->first_slice_line || (k == 2 || k == 3); | |
2805 | v->c_avail = !!s->mb_x || (k == 1 || k == 3); | |
2806 | ||
2807 | vc1_decode_i_block_adv(v, block[k], k, val, | |
2808 | (k < 4) ? v->codingset : v->codingset2, mquant); | |
2809 | ||
2810 | if (k > 3 && (s->flags & CODEC_FLAG_GRAY)) | |
2811 | continue; | |
2812 | v->vc1dsp.vc1_inv_trans_8x8(block[k]); | |
2813 | } | |
2814 | ||
2815 | ff_vc1_smooth_overlap_filter_iblk(v); | |
2816 | vc1_put_signed_blocks_clamped(v); | |
2817 | if (v->s.loop_filter) | |
2818 | ff_vc1_loop_filter_iblk_delayed(v, v->pq); | |
2819 | ||
2820 | if (get_bits_count(&s->gb) > v->bits) { | |
2821 | // TODO: may need modification to handle slice coding | |
2822 | ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR); | |
2823 | av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", | |
2824 | get_bits_count(&s->gb), v->bits); | |
2825 | return; | |
2826 | } | |
2827 | } | |
2828 | if (!v->s.loop_filter) | |
2829 | ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16); | |
2830 | else if (s->mb_y) | |
2831 | ff_mpeg_draw_horiz_band(s, (s->mb_y-1) * 16, 16); | |
2832 | s->first_slice_line = 0; | |
2833 | } | |
2834 | ||
2835 | /* raw bottom MB row */ | |
2836 | s->mb_x = 0; | |
2837 | init_block_index(v); | |
2838 | ||
2839 | for (;s->mb_x < s->mb_width; s->mb_x++) { | |
2840 | ff_update_block_index(s); | |
2841 | vc1_put_signed_blocks_clamped(v); | |
2842 | if (v->s.loop_filter) | |
2843 | ff_vc1_loop_filter_iblk_delayed(v, v->pq); | |
2844 | } | |
2845 | if (v->s.loop_filter) | |
2846 | ff_mpeg_draw_horiz_band(s, (s->end_mb_y-1)*16, 16); | |
2847 | ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1, | |
2848 | (s->end_mb_y << v->field_mode) - 1, ER_MB_END); | |
2849 | } | |
2850 | ||
2851 | static void vc1_decode_p_blocks(VC1Context *v) | |
2852 | { | |
2853 | MpegEncContext *s = &v->s; | |
2854 | int apply_loop_filter; | |
2855 | ||
2856 | /* select codingmode used for VLC tables selection */ | |
2857 | switch (v->c_ac_table_index) { | |
2858 | case 0: | |
2859 | v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA; | |
2860 | break; | |
2861 | case 1: | |
2862 | v->codingset = CS_HIGH_MOT_INTRA; | |
2863 | break; | |
2864 | case 2: | |
2865 | v->codingset = CS_MID_RATE_INTRA; | |
2866 | break; | |
2867 | } | |
2868 | ||
2869 | switch (v->c_ac_table_index) { | |
2870 | case 0: | |
2871 | v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER; | |
2872 | break; | |
2873 | case 1: | |
2874 | v->codingset2 = CS_HIGH_MOT_INTER; | |
2875 | break; | |
2876 | case 2: | |
2877 | v->codingset2 = CS_MID_RATE_INTER; | |
2878 | break; | |
2879 | } | |
2880 | ||
2881 | apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY) && | |
2882 | v->fcm == PROGRESSIVE; | |
2883 | s->first_slice_line = 1; | |
2884 | memset(v->cbp_base, 0, sizeof(v->cbp_base[0])*2*s->mb_stride); | |
2885 | for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) { | |
2886 | s->mb_x = 0; | |
2887 | init_block_index(v); | |
2888 | for (; s->mb_x < s->mb_width; s->mb_x++) { | |
2889 | ff_update_block_index(s); | |
2890 | ||
2891 | if (v->fcm == ILACE_FIELD) | |
2892 | vc1_decode_p_mb_intfi(v); | |
2893 | else if (v->fcm == ILACE_FRAME) | |
2894 | vc1_decode_p_mb_intfr(v); | |
2895 | else vc1_decode_p_mb(v); | |
2896 | if (s->mb_y != s->start_mb_y && apply_loop_filter) | |
2897 | ff_vc1_apply_p_loop_filter(v); | |
2898 | if (get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) { | |
2899 | // TODO: may need modification to handle slice coding | |
2900 | ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR); | |
2901 | av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", | |
2902 | get_bits_count(&s->gb), v->bits, s->mb_x, s->mb_y); | |
2903 | return; | |
2904 | } | |
2905 | } | |
2906 | memmove(v->cbp_base, v->cbp, sizeof(v->cbp_base[0]) * s->mb_stride); | |
2907 | memmove(v->ttblk_base, v->ttblk, sizeof(v->ttblk_base[0]) * s->mb_stride); | |
2908 | memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0]) * s->mb_stride); | |
2909 | memmove(v->luma_mv_base, v->luma_mv, sizeof(v->luma_mv_base[0]) * s->mb_stride); | |
2910 | if (s->mb_y != s->start_mb_y) ff_mpeg_draw_horiz_band(s, (s->mb_y - 1) * 16, 16); | |
2911 | s->first_slice_line = 0; | |
2912 | } | |
2913 | if (apply_loop_filter) { | |
2914 | s->mb_x = 0; | |
2915 | init_block_index(v); | |
2916 | for (; s->mb_x < s->mb_width; s->mb_x++) { | |
2917 | ff_update_block_index(s); | |
2918 | ff_vc1_apply_p_loop_filter(v); | |
2919 | } | |
2920 | } | |
2921 | if (s->end_mb_y >= s->start_mb_y) | |
2922 | ff_mpeg_draw_horiz_band(s, (s->end_mb_y - 1) * 16, 16); | |
2923 | ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1, | |
2924 | (s->end_mb_y << v->field_mode) - 1, ER_MB_END); | |
2925 | } | |
2926 | ||
2927 | static void vc1_decode_b_blocks(VC1Context *v) | |
2928 | { | |
2929 | MpegEncContext *s = &v->s; | |
2930 | ||
2931 | /* select codingmode used for VLC tables selection */ | |
2932 | switch (v->c_ac_table_index) { | |
2933 | case 0: | |
2934 | v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA; | |
2935 | break; | |
2936 | case 1: | |
2937 | v->codingset = CS_HIGH_MOT_INTRA; | |
2938 | break; | |
2939 | case 2: | |
2940 | v->codingset = CS_MID_RATE_INTRA; | |
2941 | break; | |
2942 | } | |
2943 | ||
2944 | switch (v->c_ac_table_index) { | |
2945 | case 0: | |
2946 | v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER; | |
2947 | break; | |
2948 | case 1: | |
2949 | v->codingset2 = CS_HIGH_MOT_INTER; | |
2950 | break; | |
2951 | case 2: | |
2952 | v->codingset2 = CS_MID_RATE_INTER; | |
2953 | break; | |
2954 | } | |
2955 | ||
2956 | s->first_slice_line = 1; | |
2957 | for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) { | |
2958 | s->mb_x = 0; | |
2959 | init_block_index(v); | |
2960 | for (; s->mb_x < s->mb_width; s->mb_x++) { | |
2961 | ff_update_block_index(s); | |
2962 | ||
2963 | if (v->fcm == ILACE_FIELD) | |
2964 | vc1_decode_b_mb_intfi(v); | |
2965 | else if (v->fcm == ILACE_FRAME) | |
2966 | vc1_decode_b_mb_intfr(v); | |
2967 | else | |
2968 | vc1_decode_b_mb(v); | |
2969 | if (get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) { | |
2970 | // TODO: may need modification to handle slice coding | |
2971 | ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR); | |
2972 | av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", | |
2973 | get_bits_count(&s->gb), v->bits, s->mb_x, s->mb_y); | |
2974 | return; | |
2975 | } | |
2976 | if (v->s.loop_filter) | |
2977 | ff_vc1_loop_filter_iblk(v, v->pq); | |
2978 | } | |
2979 | if (!v->s.loop_filter) | |
2980 | ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16); | |
2981 | else if (s->mb_y) | |
2982 | ff_mpeg_draw_horiz_band(s, (s->mb_y - 1) * 16, 16); | |
2983 | s->first_slice_line = 0; | |
2984 | } | |
2985 | if (v->s.loop_filter) | |
2986 | ff_mpeg_draw_horiz_band(s, (s->end_mb_y - 1) * 16, 16); | |
2987 | ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1, | |
2988 | (s->end_mb_y << v->field_mode) - 1, ER_MB_END); | |
2989 | } | |
2990 | ||
2991 | static void vc1_decode_skip_blocks(VC1Context *v) | |
2992 | { | |
2993 | MpegEncContext *s = &v->s; | |
2994 | ||
2995 | if (!v->s.last_picture.f->data[0]) | |
2996 | return; | |
2997 | ||
2998 | ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_width - 1, s->end_mb_y - 1, ER_MB_END); | |
2999 | s->first_slice_line = 1; | |
3000 | for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) { | |
3001 | s->mb_x = 0; | |
3002 | init_block_index(v); | |
3003 | ff_update_block_index(s); | |
3004 | memcpy(s->dest[0], s->last_picture.f->data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16); | |
3005 | memcpy(s->dest[1], s->last_picture.f->data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8); | |
3006 | memcpy(s->dest[2], s->last_picture.f->data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8); | |
3007 | ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16); | |
3008 | s->first_slice_line = 0; | |
3009 | } | |
3010 | s->pict_type = AV_PICTURE_TYPE_P; | |
3011 | } | |
3012 | ||
3013 | void ff_vc1_decode_blocks(VC1Context *v) | |
3014 | { | |
3015 | ||
3016 | v->s.esc3_level_length = 0; | |
3017 | if (v->x8_type) { | |
3018 | ff_intrax8_decode_picture(&v->x8, 2*v->pq + v->halfpq, v->pq * !v->pquantizer); | |
3019 | } else { | |
3020 | v->cur_blk_idx = 0; | |
3021 | v->left_blk_idx = -1; | |
3022 | v->topleft_blk_idx = 1; | |
3023 | v->top_blk_idx = 2; | |
3024 | switch (v->s.pict_type) { | |
3025 | case AV_PICTURE_TYPE_I: | |
3026 | if (v->profile == PROFILE_ADVANCED) | |
3027 | vc1_decode_i_blocks_adv(v); | |
3028 | else | |
3029 | vc1_decode_i_blocks(v); | |
3030 | break; | |
3031 | case AV_PICTURE_TYPE_P: | |
3032 | if (v->p_frame_skipped) | |
3033 | vc1_decode_skip_blocks(v); | |
3034 | else | |
3035 | vc1_decode_p_blocks(v); | |
3036 | break; | |
3037 | case AV_PICTURE_TYPE_B: | |
3038 | if (v->bi_type) { | |
3039 | if (v->profile == PROFILE_ADVANCED) | |
3040 | vc1_decode_i_blocks_adv(v); | |
3041 | else | |
3042 | vc1_decode_i_blocks(v); | |
3043 | } else | |
3044 | vc1_decode_b_blocks(v); | |
3045 | break; | |
3046 | } | |
3047 | } | |
3048 | } |