FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/vc1_block.c
Date: 2025-06-23 20:06:14
Exec Total Coverage
Lines: 1799 1910 94.2%
Functions: 25 25 100.0%
Branches: 1581 2160 73.2%
Line Branch Exec Source
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 "mpegvideodec.h"
33 #include "msmpeg4_vc1_data.h"
34 #include "unary.h"
35 #include "vc1.h"
36 #include "vc1_pred.h"
37 #include "vc1acdata.h"
38 #include "vc1data.h"
39
40 // offset tables for interlaced picture MVDATA decoding
41 static const uint8_t offset_table[2][9] = {
42 { 0, 1, 2, 4, 8, 16, 32, 64, 128 },
43 { 0, 1, 3, 7, 15, 31, 63, 127, 255 },
44 };
45
46 // mapping table for internal block representation
47 static const int block_map[6] = {0, 2, 1, 3, 4, 5};
48
49 /***********************************************************************/
50 /**
51 * @name VC-1 Bitplane decoding
52 * @see 8.7, p56
53 * @{
54 */
55
56
57 10072 static inline void init_block_index(VC1Context *v)
58 {
59 10072 MpegEncContext *s = &v->s;
60 10072 ff_init_block_index(s);
61
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 10072 if (v->field_mode && !(v->second_field ^ v->tff)) {
62 669 s->dest[0] += s->cur_pic.ptr->f->linesize[0];
63 669 s->dest[1] += s->cur_pic.ptr->f->linesize[1];
64 669 s->dest[2] += s->cur_pic.ptr->f->linesize[2];
65 }
66 10072 }
67
68 356913 static inline void update_block_index(MpegEncContext *s)
69 {
70 /* VC1 is always 420 except when using AV_CODEC_FLAG_GRAY
71 * (or a HWAccel). Shall we inline this value? */
72 356913 ff_update_block_index(s, 8, 0, s->chroma_x_shift);
73 356913 }
74
75 /** @} */ //Bitplane group
76
77 250176 static void vc1_put_blocks_clamped(VC1Context *v, int put_signed)
78 {
79 250176 MpegEncContext *s = &v->s;
80 uint8_t *dest;
81 250176 int block_count = CONFIG_GRAY && (s->avctx->flags & AV_CODEC_FLAG_GRAY) ? 4 : 6;
82 250176 int fieldtx = 0;
83 int i;
84
85 /* The put pixels loop is one MB row and one MB column behind the decoding
86 * loop because we can only put pixels when overlap filtering is done. For
87 * interlaced frame pictures, however, the put pixels loop is only one
88 * column behind the decoding loop as interlaced frame pictures only need
89 * horizontal overlap filtering. */
90
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 250176 if (!s->first_slice_line && v->fcm != ILACE_FRAME) {
91
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 179816 if (s->mb_x) {
92
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 1220548 for (i = 0; i < block_count; i++) {
93
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 1743640 if (i > 3 ? v->mb_type[s->block_index[i] - s->block_wrap[i] - 1] :
94 697456 v->mb_type[s->block_index[i] - 2 * s->block_wrap[i] - 2]) {
95 294013 dest = s->dest[0] + ((i & 2) - 4) * 4 * s->linesize + ((i & 1) - 2) * 8;
96
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 294013 if (put_signed)
97
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 256143 s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][block_map[i]],
98 63146 i > 3 ? s->dest[i - 3] - 8 * s->uvlinesize - 8 : dest,
99 i > 3 ? s->uvlinesize : s->linesize);
100 else
101
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 134688 s->idsp.put_pixels_clamped(v->block[v->topleft_blk_idx][block_map[i]],
102 33672 i > 3 ? s->dest[i - 3] - 8 * s->uvlinesize - 8 : dest,
103 i > 3 ? s->uvlinesize : s->linesize);
104 }
105 }
106 }
107
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 179816 if (s->mb_x == v->end_mb_x - 1) {
108
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 38157 for (i = 0; i < block_count; i++) {
109
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 54510 if (i > 3 ? v->mb_type[s->block_index[i] - s->block_wrap[i]] :
110 21804 v->mb_type[s->block_index[i] - 2 * s->block_wrap[i]]) {
111 11193 dest = s->dest[0] + ((i & 2) - 4) * 4 * s->linesize + (i & 1) * 8;
112
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 11193 if (put_signed)
113
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 7475 s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][block_map[i]],
114 1826 i > 3 ? s->dest[i - 3] - 8 * s->uvlinesize : dest,
115 i > 3 ? s->uvlinesize : s->linesize);
116 else
117
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 7392 s->idsp.put_pixels_clamped(v->block[v->top_blk_idx][block_map[i]],
118 1848 i > 3 ? s->dest[i - 3] - 8 * s->uvlinesize : dest,
119 i > 3 ? s->uvlinesize : s->linesize);
120 }
121 }
122 }
123 }
124
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 250176 if (s->mb_y == s->end_mb_y - 1 || v->fcm == ILACE_FRAME) {
125
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 70340 if (s->mb_x) {
126
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 69038 if (v->fcm == ILACE_FRAME)
127 32368 fieldtx = v->fieldtx_plane[s->mb_y * s->mb_stride + s->mb_x - 1];
128
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 483266 for (i = 0; i < block_count; i++) {
129
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 690380 if (i > 3 ? v->mb_type[s->block_index[i] - 1] :
130 276152 v->mb_type[s->block_index[i] - 2]) {
131
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 185719 if (fieldtx)
132 34086 dest = s->dest[0] + ((i & 2) >> 1) * s->linesize + ((i & 1) - 2) * 8;
133 else
134 151633 dest = s->dest[0] + (i & 2) * 4 * s->linesize + ((i & 1) - 2) * 8;
135
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 185719 if (put_signed)
136
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 356438 s->idsp.put_signed_pixels_clamped(v->block[v->left_blk_idx][block_map[i]],
137 58766 i > 3 ? s->dest[i - 3] - 8 : dest,
138 119453 i > 3 ? s->uvlinesize : s->linesize << fieldtx);
139 else
140
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 15000 s->idsp.put_pixels_clamped(v->block[v->left_blk_idx][block_map[i]],
141 2500 i > 3 ? s->dest[i - 3] - 8 : dest,
142 5000 i > 3 ? s->uvlinesize : s->linesize << fieldtx);
143 }
144 }
145 }
146
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 70340 if (s->mb_x == v->end_mb_x - 1) {
147
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 1302 if (v->fcm == ILACE_FRAME)
148 272 fieldtx = v->fieldtx_plane[s->mb_y * s->mb_stride + s->mb_x];
149
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 9114 for (i = 0; i < block_count; i++) {
150
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 7812 if (v->mb_type[s->block_index[i]]) {
151
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 3359 if (fieldtx)
152 252 dest = s->dest[0] + ((i & 2) >> 1) * s->linesize + (i & 1) * 8;
153 else
154 3107 dest = s->dest[0] + (i & 2) * 4 * s->linesize + (i & 1) * 8;
155
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 3359 if (put_signed)
156
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 5638 s->idsp.put_signed_pixels_clamped(v->block[v->cur_blk_idx][block_map[i]],
157 926 i > 3 ? s->dest[i - 3] : dest,
158 1893 i > 3 ? s->uvlinesize : s->linesize << fieldtx);
159 else
160
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 1080 s->idsp.put_pixels_clamped(v->block[v->cur_blk_idx][block_map[i]],
161 180 i > 3 ? s->dest[i - 3] : dest,
162 360 i > 3 ? s->uvlinesize : s->linesize << fieldtx);
163 }
164 }
165 }
166 }
167 250176 }
168
169 #define inc_blk_idx(idx) do { \
170 idx++; \
171 if (idx >= v->n_allocated_blks) \
172 idx = 0; \
173 } while (0)
174
175 /***********************************************************************/
176 /**
177 * @name VC-1 Block-level functions
178 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
179 * @{
180 */
181
182 /**
183 * @def GET_MQUANT
184 * @brief Get macroblock-level quantizer scale
185 */
186 #define GET_MQUANT() \
187 if (v->dquantfrm) { \
188 int edges = 0; \
189 if (v->dqprofile == DQPROFILE_ALL_MBS) { \
190 if (v->dqbilevel) { \
191 mquant = (get_bits1(gb)) ? -v->altpq : v->pq; \
192 } else { \
193 mqdiff = get_bits(gb, 3); \
194 if (mqdiff != 7) \
195 mquant = -v->pq - mqdiff; \
196 else \
197 mquant = -get_bits(gb, 5); \
198 } \
199 } \
200 if (v->dqprofile == DQPROFILE_SINGLE_EDGE) \
201 edges = 1 << v->dqsbedge; \
202 else if (v->dqprofile == DQPROFILE_DOUBLE_EDGES) \
203 edges = (3 << v->dqsbedge) % 15; \
204 else if (v->dqprofile == DQPROFILE_FOUR_EDGES) \
205 edges = 15; \
206 if ((edges&1) && !s->mb_x) \
207 mquant = -v->altpq; \
208 if ((edges&2) && !s->mb_y) \
209 mquant = -v->altpq; \
210 if ((edges&4) && s->mb_x == (s->mb_width - 1)) \
211 mquant = -v->altpq; \
212 if ((edges&8) && \
213 s->mb_y == ((s->mb_height >> v->field_mode) - 1)) \
214 mquant = -v->altpq; \
215 if (!mquant || mquant > 31 || mquant < -31) { \
216 av_log(v->s.avctx, AV_LOG_ERROR, \
217 "Overriding invalid mquant %d\n", mquant); \
218 mquant = 1; \
219 } \
220 }
221
222 /**
223 * @def GET_MVDATA(_dmv_x, _dmv_y)
224 * @brief Get MV differentials
225 * @see MVDATA decoding from 8.3.5.2, p(1)20
226 * @param _dmv_x Horizontal differential for decoded MV
227 * @param _dmv_y Vertical differential for decoded MV
228 */
229 #define GET_MVDATA(_dmv_x, _dmv_y) \
230 index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[v->mv_table_index], \
231 VC1_MV_DIFF_VLC_BITS, 2); \
232 if (index > 36) { \
233 mb_has_coeffs = 1; \
234 index -= 37; \
235 } else \
236 mb_has_coeffs = 0; \
237 s->mb_intra = 0; \
238 if (!index) { \
239 _dmv_x = _dmv_y = 0; \
240 } else if (index == 35) { \
241 _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \
242 _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \
243 } else if (index == 36) { \
244 _dmv_x = 0; \
245 _dmv_y = 0; \
246 s->mb_intra = 1; \
247 } else { \
248 index1 = index % 6; \
249 _dmv_x = offset_table[1][index1]; \
250 val = size_table[index1] - (!s->quarter_sample && index1 == 5); \
251 if (val > 0) { \
252 val = get_bits(gb, val); \
253 sign = 0 - (val & 1); \
254 _dmv_x = (sign ^ ((val >> 1) + _dmv_x)) - sign; \
255 } \
256 \
257 index1 = index / 6; \
258 _dmv_y = offset_table[1][index1]; \
259 val = size_table[index1] - (!s->quarter_sample && index1 == 5); \
260 if (val > 0) { \
261 val = get_bits(gb, val); \
262 sign = 0 - (val & 1); \
263 _dmv_y = (sign ^ ((val >> 1) + _dmv_y)) - sign; \
264 } \
265 }
266
267 119188 static av_always_inline void get_mvdata_interlaced(VC1Context *v, int *dmv_x,
268 int *dmv_y, int *pred_flag)
269 {
270 int index, index1;
271 int extend_x, extend_y;
272 119188 GetBitContext *gb = &v->s.gb;
273 int bits, esc;
274 int val, sign;
275
276
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 119188 if (v->numref) {
277 59405 bits = VC1_2REF_MVDATA_VLC_BITS;
278 59405 esc = 125;
279 } else {
280 59783 bits = VC1_1REF_MVDATA_VLC_BITS;
281 59783 esc = 71;
282 }
283 119188 extend_x = v->dmvrange & 1;
284 119188 extend_y = (v->dmvrange >> 1) & 1;
285 119188 index = get_vlc2(gb, v->imv_vlc, bits, 3);
286
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 119188 if (index == esc) {
287 8896 *dmv_x = get_bits(gb, v->k_x);
288 8896 *dmv_y = get_bits(gb, v->k_y);
289
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 8896 if (v->numref) {
290
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 414 if (pred_flag)
291 414 *pred_flag = *dmv_y & 1;
292 414 *dmv_y = (*dmv_y + (*dmv_y & 1)) >> 1;
293 }
294 }
295 else {
296
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 110292 av_assert0(index < esc);
297 110292 index1 = (index + 1) % 9;
298
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 110292 if (index1 != 0) {
299 84924 val = get_bits(gb, index1 + extend_x);
300 84924 sign = 0 - (val & 1);
301 84924 *dmv_x = (sign ^ ((val >> 1) + offset_table[extend_x][index1])) - sign;
302 } else
303 25368 *dmv_x = 0;
304 110292 index1 = (index + 1) / 9;
305
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 110292 if (index1 > v->numref) {
306 76909 val = get_bits(gb, (index1 >> v->numref) + extend_y);
307 76909 sign = 0 - (val & 1);
308 76909 *dmv_y = (sign ^ ((val >> 1) + offset_table[extend_y][index1 >> v->numref])) - sign;
309 } else
310 33383 *dmv_y = 0;
311
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 110292 if (v->numref && pred_flag)
312 58991 *pred_flag = index1 & 1;
313 }
314 119188 }
315
316 /** Reconstruct motion vector for B-frame and do motion compensation
317 */
318 62854 static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2],
319 int direct, int mode)
320 {
321
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 62854 if (direct) {
322 9339 ff_vc1_mc_1mv(v, 0);
323 9339 ff_vc1_interp_mc(v);
324 9339 return;
325 }
326
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 53515 if (mode == BMV_TYPE_INTERPOLATED) {
327 12043 ff_vc1_mc_1mv(v, 0);
328 12043 ff_vc1_interp_mc(v);
329 12043 return;
330 }
331
332 41472 ff_vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD));
333 }
334
335 /** Get predicted DC value for I-frames only
336 * prediction dir: left=0, top=1
337 * @param s MpegEncContext
338 * @param overlap flag indicating that overlap filtering is used
339 * @param pq integer part of picture quantizer
340 * @param[in] n block index in the current MB
341 * @param dc_val_ptr Pointer to DC predictor
342 * @param dir_ptr Prediction direction for use in AC prediction
343 */
344 114600 static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
345 int16_t **dc_val_ptr, int *dir_ptr)
346 {
347 int a, b, c, wrap, pred, scale;
348 int16_t *dc_val;
349 static const uint16_t dcpred[32] = {
350 -1, 1024, 512, 341, 256, 205, 171, 146, 128,
351 114, 102, 93, 85, 79, 73, 68, 64,
352 60, 57, 54, 51, 49, 47, 45, 43,
353 41, 39, 38, 37, 35, 34, 33
354 };
355
356 /* find prediction - wmv3_dc_scale always used here in fact */
357 114600 scale = s->y_dc_scale;
358
359 114600 wrap = s->block_wrap[n];
360 114600 dc_val = s->dc_val + s->block_index[n];
361
362 /* B A
363 * C X
364 */
365 114600 c = dc_val[ - 1];
366 114600 b = dc_val[ - 1 - wrap];
367 114600 a = dc_val[ - wrap];
368
369
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 114600 if (pq < 9 || !overlap) {
370 /* Set outer values */
371
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 114600 if (s->first_slice_line && (n != 2 && n != 3))
372 5360 b = a = dcpred[scale];
373
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 114600 if (s->mb_x == 0 && (n != 1 && n != 3))
374 4056 b = c = dcpred[scale];
375 } else {
376 /* Set outer values */
377 ✗ if (s->first_slice_line && (n != 2 && n != 3))
378 ✗ b = a = 0;
379 ✗ if (s->mb_x == 0 && (n != 1 && n != 3))
380 ✗ b = c = 0;
381 }
382
383
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 114600 if (abs(a - b) <= abs(b - c)) {
384 77612 pred = c;
385 77612 *dir_ptr = 1; // left
386 } else {
387 36988 pred = a;
388 36988 *dir_ptr = 0; // top
389 }
390
391 /* update predictor */
392 114600 *dc_val_ptr = &dc_val[0];
393 114600 return pred;
394 }
395
396
397 /** Get predicted DC value
398 * prediction dir: left=0, top=1
399 * @param s MpegEncContext
400 * @param overlap flag indicating that overlap filtering is used
401 * @param pq integer part of picture quantizer
402 * @param[in] n block index in the current MB
403 * @param a_avail flag indicating top block availability
404 * @param c_avail flag indicating left block availability
405 * @param dc_val_ptr Pointer to DC predictor
406 * @param dir_ptr Prediction direction for use in AC prediction
407 */
408 381610 static inline int ff_vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
409 int a_avail, int c_avail,
410 int16_t **dc_val_ptr, int *dir_ptr)
411 {
412 int a, b, c, wrap, pred;
413 int16_t *dc_val;
414 381610 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
415 381610 int q1, q2 = 0;
416 int dqscale_index;
417
418 /* scale predictors if needed */
419 381610 q1 = FFABS(s->cur_pic.qscale_table[mb_pos]);
420 381610 dqscale_index = ff_wmv3_dc_scale_table[q1] - 1;
421
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 381610 if (dqscale_index < 0)
422 ✗ return 0;
423
424 381610 wrap = s->block_wrap[n];
425 381610 dc_val = s->dc_val + s->block_index[n];
426
427 /* B A
428 * C X
429 */
430 381610 c = dc_val[ - 1];
431 381610 b = dc_val[ - 1 - wrap];
432 381610 a = dc_val[ - wrap];
433
434
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 381610 if (c_avail && (n != 1 && n != 3)) {
435 161716 q2 = FFABS(s->cur_pic.qscale_table[mb_pos - 1]);
436
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 161716 if (q2 && q2 != q1)
437 10876 c = (int)((unsigned)c * ff_wmv3_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18;
438 }
439
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 381610 if (a_avail && (n != 2 && n != 3)) {
440 141745 q2 = FFABS(s->cur_pic.qscale_table[mb_pos - s->mb_stride]);
441
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 141745 if (q2 && q2 != q1)
442 10104 a = (int)((unsigned)a * ff_wmv3_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18;
443 }
444
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 381610 if (a_avail && c_avail && (n != 3)) {
445 163754 int off = mb_pos;
446
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 163754 if (n != 1)
447 128389 off--;
448
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 163754 if (n != 2)
449 123403 off -= s->mb_stride;
450 163754 q2 = FFABS(s->cur_pic.qscale_table[off]);
451
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 163754 if (q2 && q2 != q1)
452 13767 b = (int)((unsigned)b * ff_wmv3_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18;
453 }
454
455
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 381610 if (c_avail && (!a_avail || abs(a - b) <= abs(b - c))) {
456 209868 pred = c;
457 209868 *dir_ptr = 1; // left
458
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 171742 } else if (a_avail) {
459 118293 pred = a;
460 118293 *dir_ptr = 0; // top
461 } else {
462 53449 pred = 0;
463 53449 *dir_ptr = 1; // left
464 }
465
466 /* update predictor */
467 381610 *dc_val_ptr = &dc_val[0];
468 381610 return pred;
469 }
470
471 /** @} */ // Block group
472
473 /**
474 * @name VC1 Macroblock-level functions in Simple/Main Profiles
475 * @see 7.1.4, p91 and 8.1.1.7, p(1)04
476 * @{
477 */
478
479 173312 static inline int vc1_coded_block_pred(MpegEncContext * s, int n,
480 uint8_t **coded_block_ptr)
481 {
482 int xy, wrap, pred, a, b, c;
483
484 173312 xy = s->block_index[n];
485 173312 wrap = s->b8_stride;
486
487 /* B C
488 * A X
489 */
490 173312 a = s->coded_block[xy - 1 ];
491 173312 b = s->coded_block[xy - 1 - wrap];
492 173312 c = s->coded_block[xy - wrap];
493
494
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 173312 if (b == c) {
495 157230 pred = a;
496 } else {
497 16082 pred = c;
498 }
499
500 /* store value */
501 173312 *coded_block_ptr = &s->coded_block[xy];
502
503 173312 return pred;
504 }
505
506 /**
507 * Decode one AC coefficient
508 * @param v The VC1 context
509 * @param last Last coefficient
510 * @param skip How much zero coefficients to skip
511 * @param value Decoded AC coefficient value
512 * @param codingset set of VLC to decode data
513 * @see 8.1.3.4
514 */
515 8423957 static int vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip,
516 int *value, int codingset)
517 {
518 8423957 GetBitContext *gb = &v->s.gb;
519 int index, run, level, lst, sign;
520
521 8423957 index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset], AC_VLC_BITS, 3);
522
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 8423957 if (index < 0)
523 ✗ return index;
524
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 8423957 if (index != ff_vc1_ac_sizes[codingset] - 1) {
525 8351956 run = vc1_index_decode_table[codingset][index][0];
526 8351956 level = vc1_index_decode_table[codingset][index][1];
527
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 8351956 lst = index >= vc1_last_decode_table[codingset] || get_bits_left(gb) < 0;
528 8351956 sign = get_bits1(gb);
529 } else {
530 72001 int escape = decode210(gb);
531
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 72001 if (escape != 2) {
532 62172 index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset], AC_VLC_BITS, 3);
533
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 62172 if (index >= ff_vc1_ac_sizes[codingset] - 1U)
534 ✗ return AVERROR_INVALIDDATA;
535 62172 run = vc1_index_decode_table[codingset][index][0];
536 62172 level = vc1_index_decode_table[codingset][index][1];
537 62172 lst = index >= vc1_last_decode_table[codingset];
538
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 62172 if (escape == 0) {
539
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 31204 if (lst)
540 12124 level += vc1_last_delta_level_table[codingset][run];
541 else
542 19080 level += vc1_delta_level_table[codingset][run];
543 } else {
544
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 30968 if (lst)
545 11240 run += vc1_last_delta_run_table[codingset][level] + 1;
546 else
547 19728 run += vc1_delta_run_table[codingset][level] + 1;
548 }
549 62172 sign = get_bits1(gb);
550 } else {
551 9829 lst = get_bits1(gb);
552
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 9829 if (v->esc3_level_length == 0) {
553
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 389 if (v->pq < 8 || v->dquantfrm) { // table 59
554 331 v->esc3_level_length = get_bits(gb, 3);
555
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 331 if (!v->esc3_level_length)
556 24 v->esc3_level_length = get_bits(gb, 2) + 8;
557 } else { // table 60
558 58 v->esc3_level_length = get_unary(gb, 1, 6) + 2;
559 }
560 389 v->esc3_run_length = 3 + get_bits(gb, 2);
561 }
562 9829 run = get_bits(gb, v->esc3_run_length);
563 9829 sign = get_bits1(gb);
564 9829 level = get_bits(gb, v->esc3_level_length);
565 }
566 }
567
568 8423957 *last = lst;
569 8423957 *skip = run;
570 8423957 *value = (level ^ -sign) + sign;
571
572 8423957 return 0;
573 }
574
575 /** Decode intra block in intra frames - should be faster than decode_intra_block
576 * @param v VC1Context
577 * @param block block to decode
578 * @param[in] n subblock index
579 * @param coded are AC coeffs present or not
580 * @param codingset set of VLC to decode data
581 */
582 114600 static int vc1_decode_i_block(VC1Context *v, int16_t block[64], int n,
583 int coded, int codingset)
584 {
585 114600 GetBitContext *gb = &v->s.gb;
586 114600 MpegEncContext *s = &v->s;
587 114600 int dc_pred_dir = 0; /* Direction of the DC prediction used */
588 int16_t *dc_val;
589 int16_t *ac_val, *ac_val2;
590 int dcdiff, scale;
591
592 /* Get DC differential */
593 114600 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_vlc[v->dc_table_index][n >= 4],
594 MSMP4_DC_VLC_BITS, 3);
595
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 114600 if (dcdiff) {
596
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 84375 const int m = (v->pq == 1 || v->pq == 2) ? 3 - v->pq : 0;
597
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 84375 if (dcdiff == 119 /* ESC index value */) {
598 2 dcdiff = get_bits(gb, 8 + m);
599 } else {
600
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 84373 if (m)
601 31164 dcdiff = (dcdiff << m) + get_bits(gb, m) - ((1 << m) - 1);
602 }
603
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 84375 if (get_bits1(gb))
604 43828 dcdiff = -dcdiff;
605 }
606
607 /* Prediction */
608 114600 dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
609 114600 *dc_val = dcdiff;
610
611 /* Store the quantized DC coeff, used for prediction */
612 114600 block[0] = dcdiff * s->y_dc_scale;
613
614 114600 ac_val = s->ac_val[s->block_index[n]];
615 114600 ac_val2 = ac_val;
616
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 114600 if (dc_pred_dir) // left
617 77612 ac_val -= 16;
618 else // top
619 36988 ac_val -= 16 * s->block_wrap[n];
620
621 114600 scale = v->pq * 2 + v->halfpq;
622
623 //AC Decoding
624
625
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 114600 if (coded) {
626 60031 int last = 0, skip, value;
627 const uint8_t *zz_table;
628 int k;
629
630
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 60031 if (v->s.ac_pred) {
631
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 14906 if (!dc_pred_dir)
632 5075 zz_table = v->zz_8x8[2];
633 else
634 9831 zz_table = v->zz_8x8[3];
635 } else
636 45125 zz_table = v->zz_8x8[1];
637
638
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 1000331 for (int i = 1; !last; ++i) {
639 940300 int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
640
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 940300 if (ret < 0)
641 ✗ return ret;
642 940300 i += skip;
643
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 940300 if (i > 63)
644 ✗ break;
645 940300 block[zz_table[i]] = value;
646 }
647
648 /* apply AC prediction if needed */
649
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 60031 if (s->ac_pred) {
650 int sh;
651
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 14906 if (dc_pred_dir) { // left
652 9831 sh = v->left_blk_sh;
653 } else { // top
654 5075 sh = v->top_blk_sh;
655 5075 ac_val += 8;
656 }
657
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 119248 for (k = 1; k < 8; k++)
658 104342 block[k << sh] += ac_val[k];
659 }
660 /* save AC coeffs for further prediction */
661
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 480248 for (k = 1; k < 8; k++) {
662 420217 ac_val2[k] = block[k << v->left_blk_sh];
663 420217 ac_val2[k + 8] = block[k << v->top_blk_sh];
664 }
665
666 /* scale AC coeffs */
667
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 3841984 for (k = 1; k < 64; k++)
668
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 3781953 if (block[k]) {
669 939667 block[k] *= scale;
670
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 939667 if (!v->pquantizer)
671
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 66540 block[k] += (block[k] < 0) ? -v->pq : v->pq;
672 }
673
674 } else {
675 int k;
676
677 54569 memset(ac_val2, 0, 16 * 2);
678
679 /* apply AC prediction if needed */
680
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 54569 if (s->ac_pred) {
681 int sh;
682
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 4204 if (dc_pred_dir) { //left
683 3180 sh = v->left_blk_sh;
684 } else { // top
685 1024 sh = v->top_blk_sh;
686 1024 ac_val += 8;
687 1024 ac_val2 += 8;
688 }
689 4204 memcpy(ac_val2, ac_val, 8 * 2);
690
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 33632 for (k = 1; k < 8; k++) {
691 29428 block[k << sh] = ac_val[k] * scale;
692
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 29428 if (!v->pquantizer && block[k << sh])
693
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 590 block[k << sh] += (block[k << sh] < 0) ? -v->pq : v->pq;
694 }
695 }
696 }
697
698 114600 return 0;
699 }
700
701 /** Decode intra block in intra frames - should be faster than decode_intra_block
702 * @param v VC1Context
703 * @param block block to decode
704 * @param[in] n subblock number
705 * @param coded are AC coeffs present or not
706 * @param codingset set of VLC to decode data
707 * @param mquant quantizer value for this macroblock
708 */
709 145368 static int vc1_decode_i_block_adv(VC1Context *v, int16_t block[64], int n,
710 int coded, int codingset, int mquant)
711 {
712 145368 GetBitContext *gb = &v->s.gb;
713 145368 MpegEncContext *s = &v->s;
714 145368 int dc_pred_dir = 0; /* Direction of the DC prediction used */
715 145368 int16_t *dc_val = NULL;
716 int16_t *ac_val, *ac_val2;
717 int dcdiff;
718 145368 int a_avail = v->a_avail, c_avail = v->c_avail;
719 145368 int use_pred = s->ac_pred;
720 int scale;
721 145368 int q1, q2 = 0;
722 145368 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
723 145368 int quant = FFABS(mquant);
724
725 /* Get DC differential */
726 145368 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_vlc[v->dc_table_index][n >= 4],
727 MSMP4_DC_VLC_BITS, 3);
728
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 145368 if (dcdiff) {
729
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 100398 const int m = (quant == 1 || quant == 2) ? 3 - quant : 0;
730
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 100398 if (dcdiff == 119 /* ESC index value */) {
731 2 dcdiff = get_bits(gb, 8 + m);
732 } else {
733
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 100396 if (m)
734 13090 dcdiff = (dcdiff << m) + get_bits(gb, m) - ((1 << m) - 1);
735 }
736
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 100398 if (get_bits1(gb))
737 51735 dcdiff = -dcdiff;
738 }
739
740 /* Prediction */
741 145368 dcdiff += ff_vc1_pred_dc(&v->s, v->overlap, quant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
742 145368 *dc_val = dcdiff;
743
744 /* Store the quantized DC coeff, used for prediction */
745 145368 block[0] = dcdiff * s->y_dc_scale;
746
747 /* check if AC is needed at all */
748
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 145368 if (!a_avail && !c_avail)
749 84 use_pred = 0;
750
751
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 145368 scale = quant * 2 + ((mquant < 0) ? 0 : v->halfpq);
752
753 145368 ac_val = s->ac_val[s->block_index[n]];
754 145368 ac_val2 = ac_val;
755
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 145368 if (dc_pred_dir) // left
756 96277 ac_val -= 16;
757 else // top
758 49091 ac_val -= 16 * s->block_wrap[n];
759
760 145368 q1 = s->cur_pic.qscale_table[mb_pos];
761
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 145368 if (n == 3)
762 24228 q2 = q1;
763
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 121140 else if (dc_pred_dir) {
764
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 81287 if (n == 1)
765 16438 q2 = q1;
766
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 64849 else if (c_avail && mb_pos)
767 64765 q2 = s->cur_pic.qscale_table[mb_pos - 1];
768 } else {
769
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 39853 if (n == 2)
770 9816 q2 = q1;
771
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 30037 else if (a_avail && mb_pos >= s->mb_stride)
772 30037 q2 = s->cur_pic.qscale_table[mb_pos - s->mb_stride];
773 }
774
775 //AC Decoding
776
777
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 145368 if (coded) {
778 131297 int last = 0, skip, value;
779 const uint8_t *zz_table;
780 int k;
781
782
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 131297 if (v->s.ac_pred) {
783
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 32458 if (!use_pred && v->fcm == ILACE_FRAME) {
784 6 zz_table = v->zzi_8x8;
785 } else {
786
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 32452 if (!dc_pred_dir) // top
787 11944 zz_table = v->zz_8x8[2];
788 else // left
789 20508 zz_table = v->zz_8x8[3];
790 }
791 } else {
792
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 98839 if (v->fcm != ILACE_FRAME)
793 25079 zz_table = v->zz_8x8[1];
794 else
795 73760 zz_table = v->zzi_8x8;
796 }
797
798
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 1693873 for (int i = 1; !last; ++i) {
799 1562576 int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
800
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 1562576 if (ret < 0)
801 ✗ return ret;
802 1562576 i += skip;
803
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 1562576 if (i > 63)
804 ✗ break;
805 1562576 block[zz_table[i]] = value;
806 }
807
808 /* apply AC prediction if needed */
809
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 131297 if (use_pred) {
810 int sh;
811
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 32434 if (dc_pred_dir) { // left
812 20490 sh = v->left_blk_sh;
813 } else { // top
814 11944 sh = v->top_blk_sh;
815 11944 ac_val += 8;
816 }
817 /* scale predictors if needed*/
818
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 32434 q1 = FFABS(q1) * 2 + ((q1 < 0) ? 0 : v->halfpq) - 1;
819
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 32434 if (q1 < 1)
820 ✗ return AVERROR_INVALIDDATA;
821
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 32434 if (q2)
822
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 32434 q2 = FFABS(q2) * 2 + ((q2 < 0) ? 0 : v->halfpq) - 1;
823
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 32434 if (q2 && q1 != q2) {
824
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 16272 for (k = 1; k < 8; k++)
825 14238 block[k << sh] += (int)(ac_val[k] * (unsigned)q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
826 } else {
827
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✓ Branch 1 taken 30400 times.
 243200 for (k = 1; k < 8; k++)
828 212800 block[k << sh] += ac_val[k];
829 }
830 }
831 /* save AC coeffs for further prediction */
832
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 1050376 for (k = 1; k < 8; k++) {
833 919079 ac_val2[k ] = block[k << v->left_blk_sh];
834 919079 ac_val2[k + 8] = block[k << v->top_blk_sh];
835 }
836
837 /* scale AC coeffs */
838
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 8403008 for (k = 1; k < 64; k++)
839
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 8271711 if (block[k]) {
840 1560534 block[k] *= scale;
841
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 1560534 if (!v->pquantizer)
842 ✗ block[k] += (block[k] < 0) ? -quant : quant;
843 }
844
845 } else { // no AC coeffs
846 int k;
847
848 14071 memset(ac_val2, 0, 16 * 2);
849
850 /* apply AC prediction if needed */
851
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 14071 if (use_pred) {
852 int sh;
853
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✓ Branch 1 taken 457 times.
 3290 if (dc_pred_dir) { // left
854 2833 sh = v->left_blk_sh;
855 } else { // top
856 457 sh = v->top_blk_sh;
857 457 ac_val += 8;
858 457 ac_val2 += 8;
859 }
860 3290 memcpy(ac_val2, ac_val, 8 * 2);
861
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 3290 q1 = FFABS(q1) * 2 + ((q1 < 0) ? 0 : v->halfpq) - 1;
862
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 3290 if (q1 < 1)
863 ✗ return AVERROR_INVALIDDATA;
864
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 3290 if (q2)
865
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 3290 q2 = FFABS(q2) * 2 + ((q2 < 0) ? 0 : v->halfpq) - 1;
866
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 3290 if (q2 && q1 != q2) {
867
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 1680 for (k = 1; k < 8; k++)
868 1470 ac_val2[k] = (int)(ac_val2[k] * q2 * (unsigned)ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
869 }
870
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 26320 for (k = 1; k < 8; k++) {
871 23030 block[k << sh] = ac_val2[k] * scale;
872
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 23030 if (!v->pquantizer && block[k << sh])
873 ✗ block[k << sh] += (block[k << sh] < 0) ? -quant : quant;
874 }
875 }
876 }
877
878 145368 return 0;
879 }
880
881 /** Decode intra block in inter frames - more generic version than vc1_decode_i_block
882 * @param v VC1Context
883 * @param block block to decode
884 * @param[in] n subblock index
885 * @param coded are AC coeffs present or not
886 * @param mquant block quantizer
887 * @param codingset set of VLC to decode data
888 */
889 236242 static int vc1_decode_intra_block(VC1Context *v, int16_t block[64], int n,
890 int coded, int mquant, int codingset)
891 {
892 236242 GetBitContext *gb = &v->s.gb;
893 236242 MpegEncContext *s = &v->s;
894 236242 int dc_pred_dir = 0; /* Direction of the DC prediction used */
895 236242 int16_t *dc_val = NULL;
896 int16_t *ac_val, *ac_val2;
897 int dcdiff;
898 236242 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
899 236242 int a_avail = v->a_avail, c_avail = v->c_avail;
900 236242 int use_pred = s->ac_pred;
901 int scale;
902 236242 int q1, q2 = 0;
903 236242 int quant = FFABS(mquant);
904
905 236242 s->bdsp.clear_block(block);
906
907 /* XXX: Guard against dumb values of mquant */
908 236242 quant = av_clip_uintp2(quant, 5);
909
910 /* Set DC scale - y and c use the same so we only set y */
911 236242 s->y_dc_scale = ff_wmv3_dc_scale_table[quant];
912
913 /* Get DC differential */
914 236242 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_vlc[v->dc_table_index][n >= 4],
915 MSMP4_DC_VLC_BITS, 3);
916
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 236242 if (dcdiff) {
917
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 190507 const int m = (quant == 1 || quant == 2) ? 3 - quant : 0;
918
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 190507 if (dcdiff == 119 /* ESC index value */) {
919 3 dcdiff = get_bits(gb, 8 + m);
920 } else {
921
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 190504 if (m)
922 18284 dcdiff = (dcdiff << m) + get_bits(gb, m) - ((1 << m) - 1);
923 }
924
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 190507 if (get_bits1(gb))
925 106640 dcdiff = -dcdiff;
926 }
927
928 /* Prediction */
929 236242 dcdiff += ff_vc1_pred_dc(&v->s, v->overlap, quant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
930 236242 *dc_val = dcdiff;
931
932 /* Store the quantized DC coeff, used for prediction */
933 236242 block[0] = dcdiff * s->y_dc_scale;
934
935 //AC Decoding
936
937 /* check if AC is needed at all and adjust direction if needed */
938
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 236242 if (!a_avail) dc_pred_dir = 1;
939
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 236242 if (!c_avail) dc_pred_dir = 0;
940
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✓ Branch 3 taken 56504 times.
 236242 if (!a_avail && !c_avail) use_pred = 0;
941 236242 ac_val = s->ac_val[s->block_index[n]];
942 236242 ac_val2 = ac_val;
943
944
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 236242 scale = quant * 2 + ((mquant < 0) ? 0 : v->halfpq);
945
946
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 236242 if (dc_pred_dir) //left
947 113675 ac_val -= 16;
948 else //top
949 122567 ac_val -= 16 * s->block_wrap[n];
950
951 236242 q1 = s->cur_pic.qscale_table[mb_pos];
952
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 236242 if (dc_pred_dir && c_avail && mb_pos)
953 113596 q2 = s->cur_pic.qscale_table[mb_pos - 1];
954
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 236242 if (!dc_pred_dir && a_avail && mb_pos >= s->mb_stride)
955 67664 q2 = s->cur_pic.qscale_table[mb_pos - s->mb_stride];
956
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 236242 if (dc_pred_dir && n == 1)
957 34090 q2 = q1;
958
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 236242 if (!dc_pred_dir && n == 2)
959 28445 q2 = q1;
960
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 236242 if (n == 3) q2 = q1;
961
962
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 236242 if (coded) {
963 163776 int last = 0, skip, value;
964 int k;
965
966
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 1706843 for (int i = 1; !last; ++i) {
967 1543069 int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
968
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 1543069 if (ret < 0)
969 ✗ return ret;
970 1543069 i += skip;
971
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 1543069 if (i > 63)
972 2 break;
973
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 1543067 if (v->fcm == PROGRESSIVE)
974 925417 block[v->zz_8x8[0][i]] = value;
975 else {
976
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 617650 if (use_pred && (v->fcm == ILACE_FRAME)) {
977
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 19188 if (!dc_pred_dir) // top
978 8623 block[v->zz_8x8[2][i]] = value;
979 else // left
980 10565 block[v->zz_8x8[3][i]] = value;
981 } else {
982 598462 block[v->zzi_8x8[i]] = value;
983 }
984 }
985 }
986
987 /* apply AC prediction if needed */
988
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 163776 if (use_pred) {
989 /* scale predictors if needed*/
990
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 43023 q1 = FFABS(q1) * 2 + ((q1 < 0) ? 0 : v->halfpq) - 1;
991
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 43023 if (q1 < 1)
992 ✗ return AVERROR_INVALIDDATA;
993
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 43023 if (q2)
994
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 43023 q2 = FFABS(q2) * 2 + ((q2 < 0) ? 0 : v->halfpq) - 1;
995
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 43023 if (q2 && q1 != q2) {
996
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 354 if (dc_pred_dir) { // left
997
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 1880 for (k = 1; k < 8; k++)
998 1645 block[k << v->left_blk_sh] += (int)(ac_val[k] * q2 * (unsigned)ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
999 } else { //top
1000
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 952 for (k = 1; k < 8; k++)
1001 833 block[k << v->top_blk_sh] += (int)(ac_val[k + 8] * q2 * (unsigned)ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1002 }
1003 } else {
1004
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 42669 if (dc_pred_dir) { // left
1005
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 205240 for (k = 1; k < 8; k++)
1006 179585 block[k << v->left_blk_sh] += ac_val[k];
1007 } else { // top
1008
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 136112 for (k = 1; k < 8; k++)
1009 119098 block[k << v->top_blk_sh] += ac_val[k + 8];
1010 }
1011 }
1012 }
1013 /* save AC coeffs for further prediction */
1014
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 1310208 for (k = 1; k < 8; k++) {
1015 1146432 ac_val2[k ] = block[k << v->left_blk_sh];
1016 1146432 ac_val2[k + 8] = block[k << v->top_blk_sh];
1017 }
1018
1019 /* scale AC coeffs */
1020
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 10481664 for (k = 1; k < 64; k++)
1021
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 10317888 if (block[k]) {
1022 1546034 block[k] *= scale;
1023
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 1546034 if (!v->pquantizer)
1024
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 28424 block[k] += (block[k] < 0) ? -quant : quant;
1025 }
1026 } else { // no AC coeffs
1027 int k;
1028
1029 72466 memset(ac_val2, 0, 16 * 2);
1030
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 72466 if (dc_pred_dir) { // left
1031
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 34095 if (use_pred) {
1032 6724 memcpy(ac_val2, ac_val, 8 * 2);
1033
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 6724 q1 = FFABS(q1) * 2 + ((q1 < 0) ? 0 : v->halfpq) - 1;
1034
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 6724 if (q1 < 1)
1035 ✗ return AVERROR_INVALIDDATA;
1036
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 6724 if (q2)
1037
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 6724 q2 = FFABS(q2) * 2 + ((q2 < 0) ? 0 : v->halfpq) - 1;
1038
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 6724 if (q2 && q1 != q2) {
1039
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 256 for (k = 1; k < 8; k++)
1040 224 ac_val2[k] = (int)(ac_val2[k] * (unsigned)q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1041 }
1042 }
1043 } else { // top
1044
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 38371 if (use_pred) {
1045 2674 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
1046
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 2674 q1 = FFABS(q1) * 2 + ((q1 < 0) ? 0 : v->halfpq) - 1;
1047
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 2674 if (q1 < 1)
1048 ✗ return AVERROR_INVALIDDATA;
1049
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 2674 if (q2)
1050
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 2674 q2 = FFABS(q2) * 2 + ((q2 < 0) ? 0 : v->halfpq) - 1;
1051
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 2674 if (q2 && q1 != q2) {
1052
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 104 for (k = 1; k < 8; k++)
1053 91 ac_val2[k + 8] = (int)(ac_val2[k + 8] * (unsigned)q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1054 }
1055 }
1056 }
1057
1058 /* apply AC prediction if needed */
1059
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 72466 if (use_pred) {
1060
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 9398 if (dc_pred_dir) { // left
1061
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 53792 for (k = 1; k < 8; k++) {
1062 47068 block[k << v->left_blk_sh] = ac_val2[k] * scale;
1063
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 47068 if (!v->pquantizer && block[k << v->left_blk_sh])
1064
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 127 block[k << v->left_blk_sh] += (block[k << v->left_blk_sh] < 0) ? -quant : quant;
1065 }
1066 } else { // top
1067
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 21392 for (k = 1; k < 8; k++) {
1068 18718 block[k << v->top_blk_sh] = ac_val2[k + 8] * scale;
1069
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 18718 if (!v->pquantizer && block[k << v->top_blk_sh])
1070
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 129 block[k << v->top_blk_sh] += (block[k << v->top_blk_sh] < 0) ? -quant : quant;
1071 }
1072 }
1073 }
1074 }
1075
1076 236242 return 0;
1077 }
1078
1079 /** Decode P block
1080 */
1081 705481 static int vc1_decode_p_block(VC1Context *v, int16_t block[64], int n,
1082 int mquant, int ttmb, int first_block,
1083 uint8_t *dst, int linesize, int skip_block,
1084 int *ttmb_out)
1085 {
1086 705481 MpegEncContext *s = &v->s;
1087 705481 GetBitContext *gb = &s->gb;
1088 int i, j;
1089 705481 int subblkpat = 0;
1090 int scale, off, idx, last, skip, value;
1091 705481 int ttblk = ttmb & 7;
1092 705481 int pat = 0;
1093 705481 int quant = FFABS(mquant);
1094
1095 705481 s->bdsp.clear_block(block);
1096
1097
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 705481 if (ttmb == -1) {
1098 328239 ttblk = ff_vc1_ttblk_to_tt[v->tt_index][get_vlc2(gb, ff_vc1_ttblk_vlc[v->tt_index], VC1_TTBLK_VLC_BITS, 1)];
1099 }
1100
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 705481 if (ttblk == TT_4X4) {
1101 78333 subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index], VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
1102 }
1103
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 705481 if ((ttblk != TT_8X8 && ttblk != TT_4X4)
1104
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 274082 && ((v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))
1105
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 243285 || (!v->res_rtm_flag && !first_block))) {
1106 30797 subblkpat = decode012(gb);
1107
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 30797 if (subblkpat)
1108 11209 subblkpat ^= 3; // swap decoded pattern bits
1109
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 30797 if (ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM)
1110 5739 ttblk = TT_8X4;
1111
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 30797 if (ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT)
1112 3989 ttblk = TT_4X8;
1113 }
1114
2/2
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 705481 scale = quant * 2 + ((mquant < 0) ? 0 : v->halfpq);
1115
1116 // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
1117
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 705481 if (ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
1118
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 39006 subblkpat = 2 - (ttblk == TT_8X4_TOP);
1119 39006 ttblk = TT_8X4;
1120 }
1121
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 705481 if (ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
1122
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 47678 subblkpat = 2 - (ttblk == TT_4X8_LEFT);
1123 47678 ttblk = TT_4X8;
1124 }
1125
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 705481 switch (ttblk) {
1126 353066 case TT_8X8:
1127 353066 pat = 0xF;
1128 353066 i = 0;
1129 353066 last = 0;
1130
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 2433675 while (!last) {
1131 2080609 int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
1132
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 2080609 if (ret < 0)
1133 ✗ return ret;
1134 2080609 i += skip;
1135
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 2080609 if (i > 63)
1136 ✗ break;
1137
2/2
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✓ Branch 1 taken 1145839 times.
 2080609 if (!v->fcm)
1138 934770 idx = v->zz_8x8[0][i++];
1139 else
1140 1145839 idx = v->zzi_8x8[i++];
1141 2080609 block[idx] = value * scale;
1142
2/2
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✓ Branch 1 taken 1879470 times.
 2080609 if (!v->pquantizer)
1143
2/2
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✓ Branch 1 taken 100272 times.
 201139 block[idx] += (block[idx] < 0) ? -quant : quant;
1144 }
1145
1/2
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 353066 if (!skip_block) {
1146
2/2
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✓ Branch 1 taken 304465 times.
 353066 if (i == 1)
1147 48601 v->vc1dsp.vc1_inv_trans_8x8_dc(dst, linesize, block);
1148 else {
1149 304465 v->vc1dsp.vc1_inv_trans_8x8(block);
1150 304465 s->idsp.add_pixels_clamped(block, dst, linesize);
1151 }
1152 }
1153 353066 break;
1154 78333 case TT_4X4:
1155 78333 pat = ~subblkpat & 0xF;
1156
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✓ Branch 1 taken 78333 times.
 391665 for (j = 0; j < 4; j++) {
1157 313332 last = subblkpat & (1 << (3 - j));
1158 313332 i = 0;
1159 313332 off = (j & 1) * 4 + (j & 2) * 16;
1160
2/2
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✓ Branch 1 taken 313332 times.
 826087 while (!last) {
1161 512755 int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
1162
1/2
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 512755 if (ret < 0)
1163 ✗ return ret;
1164 512755 i += skip;
1165
1/2
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 512755 if (i > 15)
1166 ✗ break;
1167
2/2
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✓ Branch 1 taken 229283 times.
 512755 if (!v->fcm)
1168 283472 idx = ff_vc1_simple_progressive_4x4_zz[i++];
1169 else
1170 229283 idx = ff_vc1_adv_interlaced_4x4_zz[i++];
1171 512755 block[idx + off] = value * scale;
1172
2/2
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 512755 if (!v->pquantizer)
1173
2/2
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✓ Branch 1 taken 4856 times.
 9718 block[idx + off] += (block[idx + off] < 0) ? -quant : quant;
1174 }
1175
3/4
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 313332 if (!(subblkpat & (1 << (3 - j))) && !skip_block) {
1176
2/2
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 191401 if (i == 1)
1177 21249 v->vc1dsp.vc1_inv_trans_4x4_dc(dst + (j & 1) * 4 + (j & 2) * 2 * linesize, linesize, block + off);
1178 else
1179 170152 v->vc1dsp.vc1_inv_trans_4x4(dst + (j & 1) * 4 + (j & 2) * 2 * linesize, linesize, block + off);
1180 }
1181 }
1182 78333 break;
1183 134484 case TT_8X4:
1184 134484 pat = ~((subblkpat & 2) * 6 + (subblkpat & 1) * 3) & 0xF;
1185
2/2
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 403452 for (j = 0; j < 2; j++) {
1186 268968 last = subblkpat & (1 << (1 - j));
1187 268968 i = 0;
1188 268968 off = j * 32;
1189
2/2
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✓ Branch 1 taken 268968 times.
 1171607 while (!last) {
1190 902639 int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
1191
1/2
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 902639 if (ret < 0)
1192 ✗ return ret;
1193 902639 i += skip;
1194
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 902639 if (i > 31)
1195 ✗ break;
1196
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 902639 if (!v->fcm)
1197 470573 idx = v->zz_8x4[i++] + off;
1198 else
1199 432066 idx = ff_vc1_adv_interlaced_8x4_zz[i++] + off;
1200 902639 block[idx] = value * scale;
1201
2/2
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 902639 if (!v->pquantizer)
1202
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 9538 block[idx] += (block[idx] < 0) ? -quant : quant;
1203 }
1204
3/4
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 268968 if (!(subblkpat & (1 << (1 - j))) && !skip_block) {
1205
2/2
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 223232 if (i == 1)
1206 15847 v->vc1dsp.vc1_inv_trans_8x4_dc(dst + j * 4 * linesize, linesize, block + off);
1207 else
1208 207385 v->vc1dsp.vc1_inv_trans_8x4(dst + j * 4 * linesize, linesize, block + off);
1209 }
1210 }
1211 134484 break;
1212 139598 case TT_4X8:
1213 139598 pat = ~(subblkpat * 5) & 0xF;
1214
2/2
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 418794 for (j = 0; j < 2; j++) {
1215 279196 last = subblkpat & (1 << (1 - j));
1216 279196 i = 0;
1217 279196 off = j * 4;
1218
2/2
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✓ Branch 1 taken 279190 times.
 1161199 while (!last) {
1219 882009 int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
1220
1/2
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 882009 if (ret < 0)
1221 ✗ return ret;
1222 882009 i += skip;
1223
2/2
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 882009 if (i > 31)
1224 6 break;
1225
2/2
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✓ Branch 1 taken 449884 times.
 882003 if (!v->fcm)
1226 432119 idx = v->zz_4x8[i++] + off;
1227 else
1228 449884 idx = ff_vc1_adv_interlaced_4x8_zz[i++] + off;
1229 882003 block[idx] = value * scale;
1230
2/2
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✓ Branch 1 taken 871158 times.
 882003 if (!v->pquantizer)
1231
2/2
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✓ Branch 1 taken 5371 times.
 10845 block[idx] += (block[idx] < 0) ? -quant : quant;
1232 }
1233
3/4
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 279196 if (!(subblkpat & (1 << (1 - j))) && !skip_block) {
1234
2/2
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✓ Branch 1 taken 209105 times.
 227039 if (i == 1)
1235 17934 v->vc1dsp.vc1_inv_trans_4x8_dc(dst + j * 4, linesize, block + off);
1236 else
1237 209105 v->vc1dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off);
1238 }
1239 }
1240 139598 break;
1241 }
1242
2/2
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 705481 if (ttmb_out)
1243 648016 *ttmb_out |= ttblk << (n * 4);
1244 705481 return pat;
1245 }
1246
1247 /** @} */ // Macroblock group
1248
1249 static const uint8_t size_table[6] = { 0, 2, 3, 4, 5, 8 };
1250
1251 /** Decode one P-frame MB
1252 */
1253 152608 static int vc1_decode_p_mb(VC1Context *v)
1254 {
1255 152608 MpegEncContext *s = &v->s;
1256 152608 GetBitContext *gb = &s->gb;
1257 int i, j;
1258 152608 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1259 int cbp; /* cbp decoding stuff */
1260 int mqdiff, mquant; /* MB quantization */
1261 152608 int ttmb = v->ttfrm; /* MB Transform type */
1262
1263 152608 int mb_has_coeffs = 1; /* last_flag */
1264 int dmv_x, dmv_y; /* Differential MV components */
1265 int index, index1; /* LUT indexes */
1266 int val, sign; /* temp values */
1267 152608 int first_block = 1;
1268 int dst_idx, off;
1269 int skipped, fourmv;
1270 152608 int block_cbp = 0, pat, block_tt = 0, block_intra = 0;
1271 int ret;
1272
1273 152608 mquant = v->pq; /* lossy initialization */
1274
1275
2/2
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 152608 if (v->mv_type_is_raw)
1276 58770 fourmv = get_bits1(gb);
1277 else
1278 93838 fourmv = v->mv_type_mb_plane[mb_pos];
1279
2/2
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 152608 if (v->skip_is_raw)
1280 58470 skipped = get_bits1(gb);
1281 else
1282 94138 skipped = v->s.mbskip_table[mb_pos];
1283
1284
2/2
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 152608 if (!fourmv) { /* 1MV mode */
1285
2/2
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 126032 if (!skipped) {
1286
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 113910 GET_MVDATA(dmv_x, dmv_y);
1287
1288
2/2
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 113910 if (s->mb_intra) {
1289 24987 s->cur_pic.motion_val[1][s->block_index[0]][0] = 0;
1290 24987 s->cur_pic.motion_val[1][s->block_index[0]][1] = 0;
1291 }
1292
2/2
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 113910 s->cur_pic.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
1293 113910 ff_vc1_pred_mv(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type, 0, 0);
1294
1295 /* FIXME Set DC val for inter block ? */
1296
4/4
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 113910 if (s->mb_intra && !mb_has_coeffs) {
1297
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 2748 GET_MQUANT();
1298 2748 s->ac_pred = get_bits1(gb);
1299 2748 cbp = 0;
1300
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 111162 } else if (mb_has_coeffs) {
1301
2/2
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 92378 if (s->mb_intra)
1302 22239 s->ac_pred = get_bits1(gb);
1303 92378 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
1304
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 92378 GET_MQUANT();
1305 } else {
1306 18784 mquant = v->pq;
1307 18784 cbp = 0;
1308 }
1309 113910 s->cur_pic.qscale_table[mb_pos] = mquant;
1310
1311
6/6
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 113910 if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
1312 42234 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index],
1313 VC1_TTMB_VLC_BITS, 2);
1314
2/2
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 113910 if (!s->mb_intra) ff_vc1_mc_1mv(v, 0);
1315 113910 dst_idx = 0;
1316
2/2
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 797370 for (i = 0; i < 6; i++) {
1317 683460 s->dc_val[s->block_index[i]] = 0;
1318 683460 dst_idx += i >> 2;
1319 683460 val = ((cbp >> (5 - i)) & 1);
1320
2/2
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 683460 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
1321 683460 v->mb_type[s->block_index[i]] = s->mb_intra;
1322
2/2
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 683460 if (s->mb_intra) {
1323 /* check if prediction blocks A and C are available */
1324 149922 v->a_avail = v->c_avail = 0;
1325
6/6
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 149922 if (i == 2 || i == 3 || !s->first_slice_line)
1326 110530 v->a_avail = v->mb_type[s->block_index[i] - s->block_wrap[i]];
1327
6/6
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 149922 if (i == 1 || i == 3 || s->mb_x)
1328 147306 v->c_avail = v->mb_type[s->block_index[i] - 1];
1329
1330 149922 ret = vc1_decode_intra_block(v, v->block[v->cur_blk_idx][block_map[i]], i, val, mquant,
1331
2/2
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 149922 (i & 4) ? v->codingset2 : v->codingset);
1332
1/2
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 149922 if (ret < 0)
1333 ✗ return ret;
1334 if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
1335 continue;
1336 149922 v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[i]]);
1337
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 149922 if (v->rangeredfrm)
1338 ✗ for (j = 0; j < 64; j++)
1339 ✗ v->block[v->cur_blk_idx][block_map[i]][j] *= 2;
1340 149922 block_cbp |= 0xF << (i << 2);
1341 149922 block_intra |= 1 << i;
1342
2/2
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✓ Branch 1 taken 314060 times.
 533538 } else if (val) {
1343 658434 pat = vc1_decode_p_block(v, v->block[v->cur_blk_idx][block_map[i]], i, mquant, ttmb, first_block,
1344
2/2
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 219478 s->dest[dst_idx] + off, (i & 4) ? s->uvlinesize : s->linesize,
1345 CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), &block_tt);
1346
1/2
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 219478 if (pat < 0)
1347 ✗ return pat;
1348 219478 block_cbp |= pat << (i << 2);
1349
4/4
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 219478 if (!v->ttmbf && ttmb < 8)
1350 87522 ttmb = -1;
1351 219478 first_block = 0;
1352 }
1353 }
1354 } else { // skipped
1355 12122 s->mb_intra = 0;
1356
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 84854 for (i = 0; i < 6; i++) {
1357 72732 v->mb_type[s->block_index[i]] = 0;
1358 72732 s->dc_val[s->block_index[i]] = 0;
1359 }
1360 12122 s->cur_pic.mb_type[mb_pos] = MB_TYPE_SKIP;
1361 12122 s->cur_pic.qscale_table[mb_pos] = 0;
1362 12122 ff_vc1_pred_mv(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type, 0, 0);
1363 12122 ff_vc1_mc_1mv(v, 0);
1364 }
1365 } else { // 4MV mode
1366
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 26576 if (!skipped /* unskipped MB */) {
1367 22855 int intra_count = 0, coded_inter = 0;
1368 int is_intra[6], is_coded[6];
1369 /* Get CBPCY */
1370 22855 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
1371
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 159985 for (i = 0; i < 6; i++) {
1372 137130 val = ((cbp >> (5 - i)) & 1);
1373 137130 s->dc_val[s->block_index[i]] = 0;
1374 137130 s->mb_intra = 0;
1375
2/2
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 137130 if (i < 4) {
1376 91420 dmv_x = dmv_y = 0;
1377 91420 s->mb_intra = 0;
1378 91420 mb_has_coeffs = 0;
1379
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 91420 if (val) {
1380
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 71997 GET_MVDATA(dmv_x, dmv_y);
1381 }
1382 91420 ff_vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type, 0, 0);
1383
2/2
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 91420 if (!s->mb_intra)
1384 80856 ff_vc1_mc_4mv_luma(v, i, 0, 0);
1385 91420 intra_count += s->mb_intra;
1386 91420 is_intra[i] = s->mb_intra;
1387 91420 is_coded[i] = mb_has_coeffs;
1388 }
1389
2/2
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 137130 if (i & 4) {
1390 45710 is_intra[i] = (intra_count >= 3);
1391 45710 is_coded[i] = val;
1392 }
1393
2/2
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 137130 if (i == 4)
1394 22855 ff_vc1_mc_4mv_chroma(v, 0);
1395 137130 v->mb_type[s->block_index[i]] = is_intra[i];
1396
2/2
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 137130 if (!coded_inter)
1397 52317 coded_inter = !is_intra[i] & is_coded[i];
1398 }
1399 // if there are no coded blocks then don't do anything more
1400 22855 dst_idx = 0;
1401
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 22855 if (!intra_count && !coded_inter)
1402 2699 goto end;
1403
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 20156 GET_MQUANT();
1404 20156 s->cur_pic.qscale_table[mb_pos] = mquant;
1405 /* test if block is intra and has pred */
1406 {
1407 20156 int intrapred = 0;
1408
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 122744 for (i = 0; i < 6; i++)
1409
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 106282 if (is_intra[i]) {
1410
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 7257 if (((!s->first_slice_line || (i == 2 || i == 3)) && v->mb_type[s->block_index[i] - s->block_wrap[i]])
1411
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 5463 || ((s->mb_x || (i == 1 || i == 3)) && v->mb_type[s->block_index[i] - 1])) {
1412 3694 intrapred = 1;
1413 3694 break;
1414 }
1415 }
1416
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 20156 if (intrapred)
1417 3694 s->ac_pred = get_bits1(gb);
1418 else
1419 16462 s->ac_pred = 0;
1420 }
1421
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 20156 if (!v->ttmbf && coded_inter)
1422 18220 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
1423
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 141092 for (i = 0; i < 6; i++) {
1424 120936 dst_idx += i >> 2;
1425
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 120936 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
1426 120936 s->mb_intra = is_intra[i];
1427
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 120936 if (is_intra[i]) {
1428 /* check if prediction blocks A and C are available */
1429 13000 v->a_avail = v->c_avail = 0;
1430
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 13000 if (i == 2 || i == 3 || !s->first_slice_line)
1431 10021 v->a_avail = v->mb_type[s->block_index[i] - s->block_wrap[i]];
1432
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 13000 if (i == 1 || i == 3 || s->mb_x)
1433 12804 v->c_avail = v->mb_type[s->block_index[i] - 1];
1434
1435 13000 ret = vc1_decode_intra_block(v, v->block[v->cur_blk_idx][block_map[i]], i, is_coded[i], mquant,
1436
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 13000 (i & 4) ? v->codingset2 : v->codingset);
1437
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 13000 if (ret < 0)
1438 ✗ return ret;
1439 if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
1440 continue;
1441 13000 v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[i]]);
1442
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 13000 if (v->rangeredfrm)
1443 ✗ for (j = 0; j < 64; j++)
1444 ✗ v->block[v->cur_blk_idx][block_map[i]][j] *= 2;
1445 13000 block_cbp |= 0xF << (i << 2);
1446 13000 block_intra |= 1 << i;
1447
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 107936 } else if (is_coded[i]) {
1448 200115 pat = vc1_decode_p_block(v, v->block[v->cur_blk_idx][block_map[i]], i, mquant, ttmb,
1449 66705 first_block, s->dest[dst_idx] + off,
1450
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 66705 (i & 4) ? s->uvlinesize : s->linesize,
1451 CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY),
1452 &block_tt);
1453
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 66705 if (pat < 0)
1454 ✗ return pat;
1455 66705 block_cbp |= pat << (i << 2);
1456
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 66705 if (!v->ttmbf && ttmb < 8)
1457 44004 ttmb = -1;
1458 66705 first_block = 0;
1459 }
1460 }
1461 } else { // skipped MB
1462 3721 s->mb_intra = 0;
1463 3721 s->cur_pic.qscale_table[mb_pos] = 0;
1464
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 26047 for (i = 0; i < 6; i++) {
1465 22326 v->mb_type[s->block_index[i]] = 0;
1466 22326 s->dc_val[s->block_index[i]] = 0;
1467 }
1468
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 18605 for (i = 0; i < 4; i++) {
1469 14884 ff_vc1_pred_mv(v, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type, 0, 0);
1470 14884 ff_vc1_mc_4mv_luma(v, i, 0, 0);
1471 }
1472 3721 ff_vc1_mc_4mv_chroma(v, 0);
1473 3721 s->cur_pic.qscale_table[mb_pos] = 0;
1474 }
1475 }
1476 152608 end:
1477
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 152608 if (v->overlap && v->pq >= 9)
1478 ✗ ff_vc1_p_overlap_filter(v);
1479 152608 vc1_put_blocks_clamped(v, 1);
1480
1481 152608 v->cbp[s->mb_x] = block_cbp;
1482 152608 v->ttblk[s->mb_x] = block_tt;
1483 152608 v->is_intra[s->mb_x] = block_intra;
1484
1485 152608 return 0;
1486 }
1487
1488 /* Decode one macroblock in an interlaced frame p picture */
1489
1490 16320 static int vc1_decode_p_mb_intfr(VC1Context *v)
1491 {
1492 16320 MpegEncContext *s = &v->s;
1493 16320 GetBitContext *gb = &s->gb;
1494 int i;
1495 16320 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1496 16320 int cbp = 0; /* cbp decoding stuff */
1497 int mqdiff, mquant; /* MB quantization */
1498 16320 int ttmb = v->ttfrm; /* MB Transform type */
1499
1500 16320 int mb_has_coeffs = 1; /* last_flag */
1501 int dmv_x, dmv_y; /* Differential MV components */
1502 int val; /* temp value */
1503 16320 int first_block = 1;
1504 int dst_idx, off;
1505 16320 int skipped, fourmv = 0, twomv = 0;
1506 16320 int block_cbp = 0, pat, block_tt = 0;
1507 16320 int idx_mbmode = 0, mvbp;
1508 int fieldtx;
1509 int ret;
1510
1511 16320 mquant = v->pq; /* Lossy initialization */
1512
1513
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 16320 if (v->skip_is_raw)
1514 ✗ skipped = get_bits1(gb);
1515 else
1516 16320 skipped = v->s.mbskip_table[mb_pos];
1517
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 16320 if (!skipped) {
1518
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 16307 if (v->fourmvswitch)
1519 16307 idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_INTFR_4MV_MBMODE_VLC_BITS, 2); // try getting this done
1520 else
1521 ✗ idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2); // in a single line
1522
5/5
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 16307 switch (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0]) {
1523 /* store the motion vector type in a flag (useful later) */
1524 704 case MV_PMODE_INTFR_4MV:
1525 704 fourmv = 1;
1526 704 v->blk_mv_type[s->block_index[0]] = 0;
1527 704 v->blk_mv_type[s->block_index[1]] = 0;
1528 704 v->blk_mv_type[s->block_index[2]] = 0;
1529 704 v->blk_mv_type[s->block_index[3]] = 0;
1530 704 break;
1531 1084 case MV_PMODE_INTFR_4MV_FIELD:
1532 1084 fourmv = 1;
1533 1084 v->blk_mv_type[s->block_index[0]] = 1;
1534 1084 v->blk_mv_type[s->block_index[1]] = 1;
1535 1084 v->blk_mv_type[s->block_index[2]] = 1;
1536 1084 v->blk_mv_type[s->block_index[3]] = 1;
1537 1084 break;
1538 4797 case MV_PMODE_INTFR_2MV_FIELD:
1539 4797 twomv = 1;
1540 4797 v->blk_mv_type[s->block_index[0]] = 1;
1541 4797 v->blk_mv_type[s->block_index[1]] = 1;
1542 4797 v->blk_mv_type[s->block_index[2]] = 1;
1543 4797 v->blk_mv_type[s->block_index[3]] = 1;
1544 4797 break;
1545 8046 case MV_PMODE_INTFR_1MV:
1546 8046 v->blk_mv_type[s->block_index[0]] = 0;
1547 8046 v->blk_mv_type[s->block_index[1]] = 0;
1548 8046 v->blk_mv_type[s->block_index[2]] = 0;
1549 8046 v->blk_mv_type[s->block_index[3]] = 0;
1550 8046 break;
1551 }
1552
2/2
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 16307 if (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_INTRA) { // intra MB
1553
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 8380 for (i = 0; i < 4; i++) {
1554 6704 s->cur_pic.motion_val[1][s->block_index[i]][0] = 0;
1555 6704 s->cur_pic.motion_val[1][s->block_index[i]][1] = 0;
1556 }
1557 1676 v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1.
1558 1676 s->mb_intra = 1;
1559 1676 s->cur_pic.mb_type[mb_pos] = MB_TYPE_INTRA;
1560 1676 fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb);
1561 1676 mb_has_coeffs = get_bits1(gb);
1562
2/2
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 1676 if (mb_has_coeffs)
1563 1615 cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
1564 1676 v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
1565
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 1676 GET_MQUANT();
1566 1676 s->cur_pic.qscale_table[mb_pos] = mquant;
1567 /* Set DC scale - y and c use the same so we only set y */
1568 1676 s->y_dc_scale = ff_wmv3_dc_scale_table[FFABS(mquant)];
1569 1676 dst_idx = 0;
1570
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 11732 for (i = 0; i < 6; i++) {
1571 10056 v->a_avail = v->c_avail = 0;
1572 10056 v->mb_type[s->block_index[i]] = 1;
1573 10056 s->dc_val[s->block_index[i]] = 0;
1574 10056 dst_idx += i >> 2;
1575 10056 val = ((cbp >> (5 - i)) & 1);
1576
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 10056 if (i == 2 || i == 3 || !s->first_slice_line)
1577 9840 v->a_avail = v->mb_type[s->block_index[i] - s->block_wrap[i]];
1578
6/6
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 10056 if (i == 1 || i == 3 || s->mb_x)
1579 10000 v->c_avail = v->mb_type[s->block_index[i] - 1];
1580
1581 10056 ret = vc1_decode_intra_block(v, v->block[v->cur_blk_idx][block_map[i]], i, val, mquant,
1582
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 10056 (i & 4) ? v->codingset2 : v->codingset);
1583
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 10056 if (ret < 0)
1584 ✗ return ret;
1585 if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
1586 continue;
1587 10056 v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[i]]);
1588 10056 block_cbp |= 0xf << (i << 2);
1589 }
1590
1591 } else { // inter MB
1592 14631 mb_has_coeffs = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][3];
1593
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 14631 if (mb_has_coeffs)
1594 13330 cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
1595
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 14631 if (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) {
1596 4797 v->twomvbp = get_vlc2(gb, v->twomvbp_vlc, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1);
1597 } else {
1598
2/2
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 9834 if ((ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_4MV)
1599
2/2
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 9130 || (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_4MV_FIELD)) {
1600 1788 v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
1601 }
1602 }
1603 14631 s->mb_intra = v->is_intra[s->mb_x] = 0;
1604
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 102417 for (i = 0; i < 6; i++)
1605 87786 v->mb_type[s->block_index[i]] = 0;
1606 14631 fieldtx = v->fieldtx_plane[mb_pos] = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][1];
1607 /* for all motion vector read MVDATA and motion compensate each block */
1608 14631 dst_idx = 0;
1609
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 14631 if (fourmv) {
1610 1788 mvbp = v->fourmvbp;
1611
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 8940 for (i = 0; i < 4; i++) {
1612 7152 dmv_x = dmv_y = 0;
1613
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 7152 if (mvbp & (8 >> i))
1614 5798 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
1615 7152 ff_vc1_pred_mv_intfr(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, 0);
1616 7152 ff_vc1_mc_4mv_luma(v, i, 0, 0);
1617 }
1618 1788 ff_vc1_mc_4mv_chroma4(v, 0, 0, 0);
1619
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 12843 } else if (twomv) {
1620 4797 mvbp = v->twomvbp;
1621 4797 dmv_x = dmv_y = 0;
1622
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 4797 if (mvbp & 2) {
1623 4513 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
1624 }
1625 4797 ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 2, v->range_x, v->range_y, 0);
1626 4797 ff_vc1_mc_4mv_luma(v, 0, 0, 0);
1627 4797 ff_vc1_mc_4mv_luma(v, 1, 0, 0);
1628 4797 dmv_x = dmv_y = 0;
1629
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 4797 if (mvbp & 1) {
1630 4517 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
1631 }
1632 4797 ff_vc1_pred_mv_intfr(v, 2, dmv_x, dmv_y, 2, v->range_x, v->range_y, 0);
1633 4797 ff_vc1_mc_4mv_luma(v, 2, 0, 0);
1634 4797 ff_vc1_mc_4mv_luma(v, 3, 0, 0);
1635 4797 ff_vc1_mc_4mv_chroma4(v, 0, 0, 0);
1636 } else {
1637 8046 mvbp = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][2];
1638 8046 dmv_x = dmv_y = 0;
1639
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 8046 if (mvbp) {
1640 7892 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
1641 }
1642 8046 ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, 0);
1643 8046 ff_vc1_mc_1mv(v, 0);
1644 }
1645
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 14631 if (cbp)
1646
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 13330 GET_MQUANT(); // p. 227
1647 14631 s->cur_pic.qscale_table[mb_pos] = mquant;
1648
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 14631 if (!v->ttmbf && cbp)
1649 13330 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
1650
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 102417 for (i = 0; i < 6; i++) {
1651 87786 s->dc_val[s->block_index[i]] = 0;
1652 87786 dst_idx += i >> 2;
1653 87786 val = ((cbp >> (5 - i)) & 1);
1654
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 87786 if (!fieldtx)
1655
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 70050 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
1656 else
1657
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 17736 off = (i & 4) ? 0 : ((i & 1) * 8 + ((i > 1) * s->linesize));
1658
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 87786 if (val) {
1659 190881 pat = vc1_decode_p_block(v, v->block[v->cur_blk_idx][block_map[i]], i, mquant, ttmb,
1660 63627 first_block, s->dest[dst_idx] + off,
1661
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 63627 (i & 4) ? s->uvlinesize : (s->linesize << fieldtx),
1662 CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), &block_tt);
1663
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 63627 if (pat < 0)
1664 ✗ return pat;
1665 63627 block_cbp |= pat << (i << 2);
1666
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 63627 if (!v->ttmbf && ttmb < 8)
1667 44047 ttmb = -1;
1668 63627 first_block = 0;
1669 }
1670 }
1671 }
1672 } else { // skipped
1673 13 s->mb_intra = v->is_intra[s->mb_x] = 0;
1674
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 91 for (i = 0; i < 6; i++) {
1675 78 v->mb_type[s->block_index[i]] = 0;
1676 78 s->dc_val[s->block_index[i]] = 0;
1677 }
1678 13 s->cur_pic.mb_type[mb_pos] = MB_TYPE_SKIP;
1679 13 s->cur_pic.qscale_table[mb_pos] = 0;
1680 13 v->blk_mv_type[s->block_index[0]] = 0;
1681 13 v->blk_mv_type[s->block_index[1]] = 0;
1682 13 v->blk_mv_type[s->block_index[2]] = 0;
1683 13 v->blk_mv_type[s->block_index[3]] = 0;
1684 13 ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, 0);
1685 13 ff_vc1_mc_1mv(v, 0);
1686 13 v->fieldtx_plane[mb_pos] = 0;
1687 }
1688
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 16320 if (v->overlap && v->pq >= 9)
1689 ✗ ff_vc1_p_overlap_filter(v);
1690 16320 vc1_put_blocks_clamped(v, 1);
1691
1692 16320 v->cbp[s->mb_x] = block_cbp;
1693 16320 v->ttblk[s->mb_x] = block_tt;
1694
1695 16320 return 0;
1696 }
1697
1698 37920 static int vc1_decode_p_mb_intfi(VC1Context *v)
1699 {
1700 37920 MpegEncContext *s = &v->s;
1701 37920 GetBitContext *gb = &s->gb;
1702 int i;
1703 37920 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1704 37920 int cbp = 0; /* cbp decoding stuff */
1705 int mqdiff, mquant; /* MB quantization */
1706 37920 int ttmb = v->ttfrm; /* MB Transform type */
1707
1708 37920 int mb_has_coeffs = 1; /* last_flag */
1709 int dmv_x, dmv_y; /* Differential MV components */
1710 int val; /* temp values */
1711 37920 int first_block = 1;
1712 int dst_idx, off;
1713 37920 int pred_flag = 0;
1714 37920 int block_cbp = 0, pat, block_tt = 0;
1715 37920 int idx_mbmode = 0;
1716 int ret;
1717
1718 37920 mquant = v->pq; /* Lossy initialization */
1719
1720 37920 idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_IF_MBMODE_VLC_BITS, 2);
1721
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 37920 if (idx_mbmode <= 1) { // intra MB
1722 10225 v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1.
1723 10225 s->mb_intra = 1;
1724 10225 s->cur_pic.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0;
1725 10225 s->cur_pic.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0;
1726 10225 s->cur_pic.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA;
1727
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 10225 GET_MQUANT();
1728 10225 s->cur_pic.qscale_table[mb_pos] = mquant;
1729 /* Set DC scale - y and c use the same so we only set y */
1730 10225 s->y_dc_scale = ff_wmv3_dc_scale_table[FFABS(mquant)];
1731 10225 v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
1732 10225 mb_has_coeffs = idx_mbmode & 1;
1733
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 10225 if (mb_has_coeffs)
1734 9472 cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_ICBPCY_VLC_BITS, 2);
1735 10225 dst_idx = 0;
1736
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 71575 for (i = 0; i < 6; i++) {
1737 61350 v->a_avail = v->c_avail = 0;
1738 61350 v->mb_type[s->block_index[i]] = 1;
1739 61350 s->dc_val[s->block_index[i]] = 0;
1740 61350 dst_idx += i >> 2;
1741 61350 val = ((cbp >> (5 - i)) & 1);
1742
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 61350 if (i == 2 || i == 3 || !s->first_slice_line)
1743 58782 v->a_avail = v->mb_type[s->block_index[i] - s->block_wrap[i]];
1744
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 61350 if (i == 1 || i == 3 || s->mb_x)
1745 60566 v->c_avail = v->mb_type[s->block_index[i] - 1];
1746
1747 61350 ret = vc1_decode_intra_block(v, v->block[v->cur_blk_idx][block_map[i]], i, val, mquant,
1748
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 61350 (i & 4) ? v->codingset2 : v->codingset);
1749
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 61350 if (ret < 0)
1750 ✗ return ret;
1751 if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
1752 continue;
1753 61350 v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[i]]);
1754 61350 block_cbp |= 0xf << (i << 2);
1755 }
1756 } else {
1757 27695 s->mb_intra = v->is_intra[s->mb_x] = 0;
1758 27695 s->cur_pic.mb_type[mb_pos + v->mb_off] = MB_TYPE_16x16;
1759
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 193865 for (i = 0; i < 6; i++)
1760 166170 v->mb_type[s->block_index[i]] = 0;
1761
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 27695 if (idx_mbmode <= 5) { // 1-MV
1762 20627 dmv_x = dmv_y = pred_flag = 0;
1763
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 20627 if (idx_mbmode & 1) {
1764 15875 get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag);
1765 }
1766 20627 ff_vc1_pred_mv(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type, pred_flag, 0);
1767 20627 ff_vc1_mc_1mv(v, 0);
1768 20627 mb_has_coeffs = !(idx_mbmode & 2);
1769 } else { // 4-MV
1770 7068 v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
1771
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 35340 for (i = 0; i < 4; i++) {
1772 28272 dmv_x = dmv_y = pred_flag = 0;
1773
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 28272 if (v->fourmvbp & (8 >> i))
1774 8553 get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag);
1775 28272 ff_vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type, pred_flag, 0);
1776 28272 ff_vc1_mc_4mv_luma(v, i, 0, 0);
1777 }
1778 7068 ff_vc1_mc_4mv_chroma(v, 0);
1779 7068 mb_has_coeffs = idx_mbmode & 1;
1780 }
1781
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 27695 if (mb_has_coeffs)
1782 20790 cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
1783
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 27695 if (cbp) {
1784
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 20790 GET_MQUANT();
1785 }
1786 27695 s->cur_pic.qscale_table[mb_pos] = mquant;
1787
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 27695 if (!v->ttmbf && cbp) {
1788 20790 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
1789 }
1790 27695 dst_idx = 0;
1791
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 193865 for (i = 0; i < 6; i++) {
1792 166170 s->dc_val[s->block_index[i]] = 0;
1793 166170 dst_idx += i >> 2;
1794 166170 val = ((cbp >> (5 - i)) & 1);
1795
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 166170 off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize;
1796
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 166170 if (val) {
1797 273345 pat = vc1_decode_p_block(v, v->block[v->cur_blk_idx][block_map[i]], i, mquant, ttmb,
1798 91115 first_block, s->dest[dst_idx] + off,
1799
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 91115 (i & 4) ? s->uvlinesize : s->linesize,
1800 CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY),
1801 &block_tt);
1802
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 91115 if (pat < 0)
1803 ✗ return pat;
1804 91115 block_cbp |= pat << (i << 2);
1805
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 91115 if (!v->ttmbf && ttmb < 8)
1806 59029 ttmb = -1;
1807 91115 first_block = 0;
1808 }
1809 }
1810 }
1811
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 37920 if (v->overlap && v->pq >= 9)
1812 ✗ ff_vc1_p_overlap_filter(v);
1813 37920 vc1_put_blocks_clamped(v, 1);
1814
1815 37920 v->cbp[s->mb_x] = block_cbp;
1816 37920 v->ttblk[s->mb_x] = block_tt;
1817
1818 37920 return 0;
1819 }
1820
1821 /** Decode one B-frame MB (in Main profile)
1822 */
1823 20940 static int vc1_decode_b_mb(VC1Context *v)
1824 {
1825 20940 MpegEncContext *s = &v->s;
1826 20940 GetBitContext *gb = &s->gb;
1827 int i, j;
1828 20940 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1829 20940 int cbp = 0; /* cbp decoding stuff */
1830 int mqdiff, mquant; /* MB quantization */
1831 20940 int ttmb = v->ttfrm; /* MB Transform type */
1832 20940 int mb_has_coeffs = 0; /* last_flag */
1833 int index, index1; /* LUT indexes */
1834 int val, sign; /* temp values */
1835 20940 int first_block = 1;
1836 int dst_idx, off;
1837 int skipped, direct;
1838 int dmv_x[2], dmv_y[2];
1839 20940 int bmvtype = BMV_TYPE_BACKWARD;
1840 int ret;
1841
1842 20940 mquant = v->pq; /* lossy initialization */
1843 20940 s->mb_intra = 0;
1844
1845
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 20940 if (v->dmb_is_raw)
1846 ✗ direct = get_bits1(gb);
1847 else
1848 20940 direct = v->direct_mb_plane[mb_pos];
1849
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 20940 if (v->skip_is_raw)
1850 ✗ skipped = get_bits1(gb);
1851 else
1852 20940 skipped = v->s.mbskip_table[mb_pos];
1853
1854 20940 dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
1855
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 146580 for (i = 0; i < 6; i++) {
1856 125640 v->mb_type[s->block_index[i]] = 0;
1857 125640 s->dc_val[s->block_index[i]] = 0;
1858 }
1859 20940 s->cur_pic.qscale_table[mb_pos] = 0;
1860
1861
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 20940 if (!direct) {
1862
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 18371 if (!skipped) {
1863
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 15906 GET_MVDATA(dmv_x[0], dmv_y[0]);
1864 15906 dmv_x[1] = dmv_x[0];
1865 15906 dmv_y[1] = dmv_y[0];
1866 }
1867
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 18371 if (skipped || !s->mb_intra) {
1868 18201 bmvtype = decode012(gb);
1869
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 18201 switch (bmvtype) {
1870 8021 case 0:
1871 8021 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
1872 8021 break;
1873 4023 case 1:
1874 4023 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
1875 4023 break;
1876 6157 case 2:
1877 6157 bmvtype = BMV_TYPE_INTERPOLATED;
1878 6157 dmv_x[0] = dmv_y[0] = 0;
1879 }
1880 }
1881 }
1882
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 146580 for (i = 0; i < 6; i++)
1883 125640 v->mb_type[s->block_index[i]] = s->mb_intra;
1884
1885
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 20940 if (skipped) {
1886
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 3578 if (direct)
1887 1113 bmvtype = BMV_TYPE_INTERPOLATED;
1888 3578 ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
1889 3578 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
1890 3578 return 0;
1891 }
1892
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 17362 if (direct) {
1893 1456 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
1894
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 1456 GET_MQUANT();
1895 1456 s->mb_intra = 0;
1896 1456 s->cur_pic.qscale_table[mb_pos] = mquant;
1897
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 1456 if (!v->ttmbf)
1898 1456 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
1899 1456 dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
1900 1456 ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
1901 1456 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
1902 } else {
1903
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 15906 if (!mb_has_coeffs && !s->mb_intra) {
1904 /* no coded blocks - effectively skipped */
1905 1035 ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
1906 1035 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
1907 1035 return 0;
1908 }
1909
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 14871 if (s->mb_intra && !mb_has_coeffs) {
1910 ✗ GET_MQUANT();
1911 ✗ s->cur_pic.qscale_table[mb_pos] = mquant;
1912 ✗ s->ac_pred = get_bits1(gb);
1913 ✗ cbp = 0;
1914 ✗ ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
1915 } else {
1916
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 14871 if (bmvtype == BMV_TYPE_INTERPOLATED) {
1917
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 5289 GET_MVDATA(dmv_x[0], dmv_y[0]);
1918
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 5289 if (!mb_has_coeffs) {
1919 /* interpolated skipped block */
1920 475 ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
1921 475 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
1922 475 return 0;
1923 }
1924 }
1925 14396 ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
1926
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 14396 if (!s->mb_intra) {
1927 14226 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
1928 }
1929
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 14396 if (s->mb_intra)
1930 170 s->ac_pred = get_bits1(gb);
1931 14396 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
1932
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 14396 GET_MQUANT();
1933 14396 s->cur_pic.qscale_table[mb_pos] = mquant;
1934
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 14396 if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
1935 14226 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
1936 }
1937 }
1938 15852 dst_idx = 0;
1939
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 110964 for (i = 0; i < 6; i++) {
1940 95112 s->dc_val[s->block_index[i]] = 0;
1941 95112 dst_idx += i >> 2;
1942 95112 val = ((cbp >> (5 - i)) & 1);
1943
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 95112 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
1944 95112 v->mb_type[s->block_index[i]] = s->mb_intra;
1945
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 95112 if (s->mb_intra) {
1946 /* check if prediction blocks A and C are available */
1947 1020 v->a_avail = v->c_avail = 0;
1948
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 1020 if (i == 2 || i == 3 || !s->first_slice_line)
1949 996 v->a_avail = v->mb_type[s->block_index[i] - s->block_wrap[i]];
1950
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 1020 if (i == 1 || i == 3 || s->mb_x)
1951 992 v->c_avail = v->mb_type[s->block_index[i] - 1];
1952
1953 1020 ret = vc1_decode_intra_block(v, s->block[i], i, val, mquant,
1954
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 1020 (i & 4) ? v->codingset2 : v->codingset);
1955
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 1020 if (ret < 0)
1956 ✗ return ret;
1957 if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
1958 continue;
1959 1020 v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
1960
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 1020 if (v->rangeredfrm)
1961 ✗ for (j = 0; j < 64; j++)
1962 ✗ s->block[i][j] *= 2;
1963 1020 s->idsp.put_signed_pixels_clamped(s->block[i],
1964 1020 s->dest[dst_idx] + off,
1965
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 1020 i & 4 ? s->uvlinesize
1966 : s->linesize);
1967
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 94092 } else if (val) {
1968 172395 int pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
1969 57465 first_block, s->dest[dst_idx] + off,
1970
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 57465 (i & 4) ? s->uvlinesize : s->linesize,
1971 CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), NULL);
1972
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 57465 if (pat < 0)
1973 ✗ return pat;
1974
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 57465 if (!v->ttmbf && ttmb < 8)
1975 54531 ttmb = -1;
1976 57465 first_block = 0;
1977 }
1978 }
1979 15852 return 0;
1980 }
1981
1982 /** Decode one B-frame MB (in interlaced field B picture)
1983 */
1984 51540 static int vc1_decode_b_mb_intfi(VC1Context *v)
1985 {
1986 51540 MpegEncContext *s = &v->s;
1987 51540 GetBitContext *gb = &s->gb;
1988 int i, j;
1989 51540 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1990 51540 int cbp = 0; /* cbp decoding stuff */
1991 int mqdiff, mquant; /* MB quantization */
1992 51540 int ttmb = v->ttfrm; /* MB Transform type */
1993 51540 int mb_has_coeffs = 0; /* last_flag */
1994 int val; /* temp value */
1995 51540 int first_block = 1;
1996 int dst_idx, off;
1997 int fwd;
1998 int dmv_x[2], dmv_y[2], pred_flag[2];
1999 51540 int bmvtype = BMV_TYPE_BACKWARD;
2000 51540 int block_cbp = 0, pat, block_tt = 0;
2001 int idx_mbmode;
2002 int ret;
2003
2004 51540 mquant = v->pq; /* Lossy initialization */
2005 51540 s->mb_intra = 0;
2006
2007 51540 idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_IF_MBMODE_VLC_BITS, 2);
2008
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 51540 if (idx_mbmode <= 1) { // intra MB
2009 48 v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1.
2010 48 s->mb_intra = 1;
2011 48 s->cur_pic.motion_val[1][s->block_index[0]][0] = 0;
2012 48 s->cur_pic.motion_val[1][s->block_index[0]][1] = 0;
2013 48 s->cur_pic.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA;
2014
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 48 GET_MQUANT();
2015 48 s->cur_pic.qscale_table[mb_pos] = mquant;
2016 /* Set DC scale - y and c use the same so we only set y */
2017 48 s->y_dc_scale = ff_wmv3_dc_scale_table[FFABS(mquant)];
2018 48 v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
2019 48 mb_has_coeffs = idx_mbmode & 1;
2020
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 48 if (mb_has_coeffs)
2021 33 cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_ICBPCY_VLC_BITS, 2);
2022 48 dst_idx = 0;
2023
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 336 for (i = 0; i < 6; i++) {
2024 288 v->a_avail = v->c_avail = 0;
2025 288 v->mb_type[s->block_index[i]] = 1;
2026 288 s->dc_val[s->block_index[i]] = 0;
2027 288 dst_idx += i >> 2;
2028 288 val = ((cbp >> (5 - i)) & 1);
2029
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 288 if (i == 2 || i == 3 || !s->first_slice_line)
2030 288 v->a_avail = v->mb_type[s->block_index[i] - s->block_wrap[i]];
2031
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 288 if (i == 1 || i == 3 || s->mb_x)
2032 284 v->c_avail = v->mb_type[s->block_index[i] - 1];
2033
2034 288 ret = vc1_decode_intra_block(v, s->block[i], i, val, mquant,
2035
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 288 (i & 4) ? v->codingset2 : v->codingset);
2036
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 288 if (ret < 0)
2037 ✗ return ret;
2038 if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
2039 continue;
2040 288 v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
2041
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 288 if (v->rangeredfrm)
2042 ✗ for (j = 0; j < 64; j++)
2043 ✗ s->block[i][j] <<= 1;
2044
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 288 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
2045 288 s->idsp.put_signed_pixels_clamped(s->block[i],
2046 288 s->dest[dst_idx] + off,
2047
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 288 (i & 4) ? s->uvlinesize
2048 : s->linesize);
2049 }
2050 } else {
2051 51492 s->mb_intra = v->is_intra[s->mb_x] = 0;
2052 51492 s->cur_pic.mb_type[mb_pos + v->mb_off] = MB_TYPE_16x16;
2053
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 360444 for (i = 0; i < 6; i++)
2054 308952 v->mb_type[s->block_index[i]] = 0;
2055
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 51492 if (v->fmb_is_raw)
2056 675 fwd = v->forward_mb_plane[mb_pos] = get_bits1(gb);
2057 else
2058 50817 fwd = v->forward_mb_plane[mb_pos];
2059
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 51492 if (idx_mbmode <= 5) { // 1-MV
2060 42084 int interpmvp = 0;
2061 42084 dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
2062 42084 pred_flag[0] = pred_flag[1] = 0;
2063
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 42084 if (fwd)
2064 15503 bmvtype = BMV_TYPE_FORWARD;
2065 else {
2066 26581 bmvtype = decode012(gb);
2067
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 26581 switch (bmvtype) {
2068 13925 case 0:
2069 13925 bmvtype = BMV_TYPE_BACKWARD;
2070 13925 break;
2071 6770 case 1:
2072 6770 bmvtype = BMV_TYPE_DIRECT;
2073 6770 break;
2074 5886 case 2:
2075 5886 bmvtype = BMV_TYPE_INTERPOLATED;
2076 5886 interpmvp = get_bits1(gb);
2077 }
2078 }
2079 42084 v->bmvtype = bmvtype;
2080
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 42084 if (bmvtype != BMV_TYPE_DIRECT && idx_mbmode & 1) {
2081 20242 get_mvdata_interlaced(v, &dmv_x[bmvtype == BMV_TYPE_BACKWARD], &dmv_y[bmvtype == BMV_TYPE_BACKWARD], &pred_flag[bmvtype == BMV_TYPE_BACKWARD]);
2082 }
2083
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 42084 if (interpmvp) {
2084 4685 get_mvdata_interlaced(v, &dmv_x[1], &dmv_y[1], &pred_flag[1]);
2085 }
2086
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 42084 if (bmvtype == BMV_TYPE_DIRECT) {
2087 6770 dmv_x[0] = dmv_y[0] = pred_flag[0] = 0;
2088 6770 dmv_x[1] = dmv_y[1] = pred_flag[0] = 0;
2089
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 6770 if (!s->next_pic.ptr->field_picture) {
2090 ✗ av_log(s->avctx, AV_LOG_ERROR, "Mixed field/frame direct mode not supported\n");
2091 ✗ return AVERROR_INVALIDDATA;
2092 }
2093 }
2094 42084 ff_vc1_pred_b_mv_intfi(v, 0, dmv_x, dmv_y, 1, pred_flag);
2095 42084 vc1_b_mc(v, dmv_x, dmv_y, (bmvtype == BMV_TYPE_DIRECT), bmvtype);
2096 42084 mb_has_coeffs = !(idx_mbmode & 2);
2097 } else { // 4-MV
2098
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 9408 if (fwd)
2099 4892 bmvtype = BMV_TYPE_FORWARD;
2100 9408 v->bmvtype = bmvtype;
2101 9408 v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
2102
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 47040 for (i = 0; i < 4; i++) {
2103 37632 dmv_x[0] = dmv_y[0] = pred_flag[0] = 0;
2104 37632 dmv_x[1] = dmv_y[1] = pred_flag[1] = 0;
2105
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 37632 if (v->fourmvbp & (8 >> i)) {
2106 10050 get_mvdata_interlaced(v, &dmv_x[bmvtype == BMV_TYPE_BACKWARD],
2107 10050 &dmv_y[bmvtype == BMV_TYPE_BACKWARD],
2108 10050 &pred_flag[bmvtype == BMV_TYPE_BACKWARD]);
2109 }
2110 37632 ff_vc1_pred_b_mv_intfi(v, i, dmv_x, dmv_y, 0, pred_flag);
2111 37632 ff_vc1_mc_4mv_luma(v, i, bmvtype == BMV_TYPE_BACKWARD, 0);
2112 }
2113 9408 ff_vc1_mc_4mv_chroma(v, bmvtype == BMV_TYPE_BACKWARD);
2114 9408 mb_has_coeffs = idx_mbmode & 1;
2115 }
2116
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 51492 if (mb_has_coeffs)
2117 30972 cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
2118
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 51492 if (cbp) {
2119
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 30972 GET_MQUANT();
2120 }
2121 51492 s->cur_pic.qscale_table[mb_pos] = mquant;
2122
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 51492 if (!v->ttmbf && cbp) {
2123 30972 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
2124 }
2125 51492 dst_idx = 0;
2126
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 360444 for (i = 0; i < 6; i++) {
2127 308952 s->dc_val[s->block_index[i]] = 0;
2128 308952 dst_idx += i >> 2;
2129 308952 val = ((cbp >> (5 - i)) & 1);
2130
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 308952 off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize;
2131
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 308952 if (val) {
2132 274410 pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
2133 91470 first_block, s->dest[dst_idx] + off,
2134
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 91470 (i & 4) ? s->uvlinesize : s->linesize,
2135 CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), &block_tt);
2136
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 91470 if (pat < 0)
2137 ✗ return pat;
2138 91470 block_cbp |= pat << (i << 2);
2139
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 91470 if (!v->ttmbf && ttmb < 8)
2140 69969 ttmb = -1;
2141 91470 first_block = 0;
2142 }
2143 }
2144 }
2145 51540 v->cbp[s->mb_x] = block_cbp;
2146 51540 v->ttblk[s->mb_x] = block_tt;
2147
2148 51540 return 0;
2149 }
2150
2151 /** Decode one B-frame MB (in interlaced frame B picture)
2152 */
2153 32640 static int vc1_decode_b_mb_intfr(VC1Context *v)
2154 {
2155 32640 MpegEncContext *s = &v->s;
2156 32640 GetBitContext *gb = &s->gb;
2157 int i, j;
2158 32640 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2159 32640 int cbp = 0; /* cbp decoding stuff */
2160 int mqdiff, mquant; /* MB quantization */
2161 32640 int ttmb = v->ttfrm; /* MB Transform type */
2162 32640 int mvsw = 0; /* motion vector switch */
2163 32640 int mb_has_coeffs = 1; /* last_flag */
2164 int dmv_x, dmv_y; /* Differential MV components */
2165 int val; /* temp value */
2166 32640 int first_block = 1;
2167 int dst_idx, off;
2168 32640 int skipped, direct, twomv = 0;
2169 32640 int block_cbp = 0, pat, block_tt = 0;
2170 32640 int idx_mbmode = 0, mvbp;
2171 int stride_y, fieldtx;
2172 32640 int bmvtype = BMV_TYPE_BACKWARD;
2173 int dir, dir2;
2174 int ret;
2175
2176 32640 mquant = v->pq; /* Lossy initialization */
2177 32640 s->mb_intra = 0;
2178
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 32640 if (v->skip_is_raw)
2179 ✗ skipped = get_bits1(gb);
2180 else
2181 32640 skipped = v->s.mbskip_table[mb_pos];
2182
2183
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 32640 if (!skipped) {
2184 31098 idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2);
2185
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 31098 if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) {
2186 17446 twomv = 1;
2187 17446 v->blk_mv_type[s->block_index[0]] = 1;
2188 17446 v->blk_mv_type[s->block_index[1]] = 1;
2189 17446 v->blk_mv_type[s->block_index[2]] = 1;
2190 17446 v->blk_mv_type[s->block_index[3]] = 1;
2191 } else {
2192 13652 v->blk_mv_type[s->block_index[0]] = 0;
2193 13652 v->blk_mv_type[s->block_index[1]] = 0;
2194 13652 v->blk_mv_type[s->block_index[2]] = 0;
2195 13652 v->blk_mv_type[s->block_index[3]] = 0;
2196 }
2197 }
2198
2199
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 32640 if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_INTRA) { // intra MB
2200
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 505 for (i = 0; i < 4; i++) {
2201 404 s->mv[0][i][0] = s->cur_pic.motion_val[0][s->block_index[i]][0] = 0;
2202 404 s->mv[0][i][1] = s->cur_pic.motion_val[0][s->block_index[i]][1] = 0;
2203 404 s->mv[1][i][0] = s->cur_pic.motion_val[1][s->block_index[i]][0] = 0;
2204 404 s->mv[1][i][1] = s->cur_pic.motion_val[1][s->block_index[i]][1] = 0;
2205 }
2206 101 v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1.
2207 101 s->mb_intra = 1;
2208 101 s->cur_pic.mb_type[mb_pos] = MB_TYPE_INTRA;
2209 101 fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb);
2210 101 mb_has_coeffs = get_bits1(gb);
2211
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 101 if (mb_has_coeffs)
2212 101 cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
2213 101 v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
2214
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 101 GET_MQUANT();
2215 101 s->cur_pic.qscale_table[mb_pos] = mquant;
2216 /* Set DC scale - y and c use the same so we only set y */
2217 101 s->y_dc_scale = ff_wmv3_dc_scale_table[FFABS(mquant)];
2218 101 dst_idx = 0;
2219
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 707 for (i = 0; i < 6; i++) {
2220 606 v->a_avail = v->c_avail = 0;
2221 606 v->mb_type[s->block_index[i]] = 1;
2222 606 s->dc_val[s->block_index[i]] = 0;
2223 606 dst_idx += i >> 2;
2224 606 val = ((cbp >> (5 - i)) & 1);
2225
6/6
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 606 if (i == 2 || i == 3 || !s->first_slice_line)
2226 574 v->a_avail = v->mb_type[s->block_index[i] - s->block_wrap[i]];
2227
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 606 if (i == 1 || i == 3 || s->mb_x)
2228 594 v->c_avail = v->mb_type[s->block_index[i] - 1];
2229
2230 606 ret = vc1_decode_intra_block(v, s->block[i], i, val, mquant,
2231
2/2
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 606 (i & 4) ? v->codingset2 : v->codingset);
2232
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 606 if (ret < 0)
2233 ✗ return ret;
2234 if (CONFIG_GRAY && i > 3 && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
2235 continue;
2236 606 v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
2237
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 606 if (i < 4) {
2238 404 stride_y = s->linesize << fieldtx;
2239
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 404 off = (fieldtx) ? ((i & 1) * 8) + ((i & 2) >> 1) * s->linesize : (i & 1) * 8 + 4 * (i & 2) * s->linesize;
2240 } else {
2241 202 stride_y = s->uvlinesize;
2242 202 off = 0;
2243 }
2244 606 s->idsp.put_signed_pixels_clamped(s->block[i],
2245 606 s->dest[dst_idx] + off,
2246 stride_y);
2247 }
2248 } else {
2249 32539 s->mb_intra = v->is_intra[s->mb_x] = 0;
2250
2251
1/2
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 32539 if (v->dmb_is_raw)
2252 ✗ direct = get_bits1(gb);
2253 else
2254 32539 direct = v->direct_mb_plane[mb_pos];
2255
2256
2/2
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 32539 if (direct) {
2257
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 8474 if (s->next_pic.ptr->field_picture)
2258 ✗ av_log(s->avctx, AV_LOG_WARNING, "Mixed frame/field direct mode not supported\n");
2259 8474 s->mv[0][0][0] = s->cur_pic.motion_val[0][s->block_index[0]][0] = scale_mv(s->next_pic.motion_val[1][s->block_index[0]][0], v->bfraction, 0, s->quarter_sample);
2260 8474 s->mv[0][0][1] = s->cur_pic.motion_val[0][s->block_index[0]][1] = scale_mv(s->next_pic.motion_val[1][s->block_index[0]][1], v->bfraction, 0, s->quarter_sample);
2261 8474 s->mv[1][0][0] = s->cur_pic.motion_val[1][s->block_index[0]][0] = scale_mv(s->next_pic.motion_val[1][s->block_index[0]][0], v->bfraction, 1, s->quarter_sample);
2262 8474 s->mv[1][0][1] = s->cur_pic.motion_val[1][s->block_index[0]][1] = scale_mv(s->next_pic.motion_val[1][s->block_index[0]][1], v->bfraction, 1, s->quarter_sample);
2263
2264
2/2
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 8474 if (twomv) {
2265 4360 s->mv[0][2][0] = s->cur_pic.motion_val[0][s->block_index[2]][0] = scale_mv(s->next_pic.motion_val[1][s->block_index[2]][0], v->bfraction, 0, s->quarter_sample);
2266 4360 s->mv[0][2][1] = s->cur_pic.motion_val[0][s->block_index[2]][1] = scale_mv(s->next_pic.motion_val[1][s->block_index[2]][1], v->bfraction, 0, s->quarter_sample);
2267 4360 s->mv[1][2][0] = s->cur_pic.motion_val[1][s->block_index[2]][0] = scale_mv(s->next_pic.motion_val[1][s->block_index[2]][0], v->bfraction, 1, s->quarter_sample);
2268 4360 s->mv[1][2][1] = s->cur_pic.motion_val[1][s->block_index[2]][1] = scale_mv(s->next_pic.motion_val[1][s->block_index[2]][1], v->bfraction, 1, s->quarter_sample);
2269
2270
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 13080 for (i = 1; i < 4; i += 2) {
2271 8720 s->mv[0][i][0] = s->cur_pic.motion_val[0][s->block_index[i]][0] = s->mv[0][i-1][0];
2272 8720 s->mv[0][i][1] = s->cur_pic.motion_val[0][s->block_index[i]][1] = s->mv[0][i-1][1];
2273 8720 s->mv[1][i][0] = s->cur_pic.motion_val[1][s->block_index[i]][0] = s->mv[1][i-1][0];
2274 8720 s->mv[1][i][1] = s->cur_pic.motion_val[1][s->block_index[i]][1] = s->mv[1][i-1][1];
2275 }
2276 } else {
2277
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 16456 for (i = 1; i < 4; i++) {
2278 12342 s->mv[0][i][0] = s->cur_pic.motion_val[0][s->block_index[i]][0] = s->mv[0][0][0];
2279 12342 s->mv[0][i][1] = s->cur_pic.motion_val[0][s->block_index[i]][1] = s->mv[0][0][1];
2280 12342 s->mv[1][i][0] = s->cur_pic.motion_val[1][s->block_index[i]][0] = s->mv[1][0][0];
2281 12342 s->mv[1][i][1] = s->cur_pic.motion_val[1][s->block_index[i]][1] = s->mv[1][0][1];
2282 }
2283 }
2284 }
2285
2286
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 32539 if (!direct) {
2287
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 24065 if (skipped || !s->mb_intra) {
2288 24065 bmvtype = decode012(gb);
2289
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 24065 switch (bmvtype) {
2290 14341 case 0:
2291 14341 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
2292 14341 break;
2293 6232 case 1:
2294 6232 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
2295 6232 break;
2296 3492 case 2:
2297 3492 bmvtype = BMV_TYPE_INTERPOLATED;
2298 }
2299 }
2300
2301
4/4
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 24065 if (twomv && bmvtype != BMV_TYPE_INTERPOLATED)
2302 12364 mvsw = get_bits1(gb);
2303 }
2304
2305
2/2
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 32539 if (!skipped) { // inter MB
2306 30997 mb_has_coeffs = ff_vc1_mbmode_intfrp[0][idx_mbmode][3];
2307
2/2
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 30997 if (mb_has_coeffs)
2308 26859 cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
2309
2/2
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 30997 if (!direct) {
2310
4/4
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 23850 if (bmvtype == BMV_TYPE_INTERPOLATED && twomv) {
2311 722 v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
2312
4/4
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 23128 } else if (bmvtype == BMV_TYPE_INTERPOLATED || twomv) {
2313 15125 v->twomvbp = get_vlc2(gb, v->twomvbp_vlc, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1);
2314 }
2315 }
2316
2317
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 216979 for (i = 0; i < 6; i++)
2318 185982 v->mb_type[s->block_index[i]] = 0;
2319 30997 fieldtx = v->fieldtx_plane[mb_pos] = ff_vc1_mbmode_intfrp[0][idx_mbmode][1];
2320 /* for all motion vector read MVDATA and motion compensate each block */
2321 30997 dst_idx = 0;
2322
2/2
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 30997 if (direct) {
2323
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 7147 if (twomv) {
2324
2/2
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 21800 for (i = 0; i < 4; i++) {
2325 17440 ff_vc1_mc_4mv_luma(v, i, 0, 0);
2326 17440 ff_vc1_mc_4mv_luma(v, i, 1, 1);
2327 }
2328 4360 ff_vc1_mc_4mv_chroma4(v, 0, 0, 0);
2329 4360 ff_vc1_mc_4mv_chroma4(v, 1, 1, 1);
2330 } else {
2331 2787 ff_vc1_mc_1mv(v, 0);
2332 2787 ff_vc1_interp_mc(v);
2333 }
2334
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 23850 } else if (twomv && bmvtype == BMV_TYPE_INTERPOLATED) {
2335 722 mvbp = v->fourmvbp;
2336
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 3610 for (i = 0; i < 4; i++) {
2337
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 2888 dir = i==1 || i==3;
2338 2888 dmv_x = dmv_y = 0;
2339 2888 val = ((mvbp >> (3 - i)) & 1);
2340
2/2
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 2888 if (val)
2341 2477 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
2342
2/2
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 2888 j = i > 1 ? 2 : 0;
2343 2888 ff_vc1_pred_mv_intfr(v, j, dmv_x, dmv_y, 2, v->range_x, v->range_y, dir);
2344 2888 ff_vc1_mc_4mv_luma(v, j, dir, dir);
2345 2888 ff_vc1_mc_4mv_luma(v, j+1, dir, dir);
2346 }
2347
2348 722 ff_vc1_mc_4mv_chroma4(v, 0, 0, 0);
2349 722 ff_vc1_mc_4mv_chroma4(v, 1, 1, 1);
2350
2/2
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 23128 } else if (bmvtype == BMV_TYPE_INTERPOLATED) {
2351 2761 mvbp = v->twomvbp;
2352 2761 dmv_x = dmv_y = 0;
2353
2/2
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 2761 if (mvbp & 2)
2354 2691 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
2355
2356 2761 ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, 0);
2357 2761 ff_vc1_mc_1mv(v, 0);
2358
2359 2761 dmv_x = dmv_y = 0;
2360
2/2
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 2761 if (mvbp & 1)
2361 2648 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
2362
2363 2761 ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, 1);
2364 2761 ff_vc1_interp_mc(v);
2365
2/2
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 20367 } else if (twomv) {
2366 12364 dir = bmvtype == BMV_TYPE_BACKWARD;
2367 12364 dir2 = dir;
2368
2/2
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✓ Branch 1 taken 6511 times.
 12364 if (mvsw)
2369 5853 dir2 = !dir;
2370 12364 mvbp = v->twomvbp;
2371 12364 dmv_x = dmv_y = 0;
2372
2/2
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 12364 if (mvbp & 2)
2373 10627 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
2374 12364 ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 2, v->range_x, v->range_y, dir);
2375
2376 12364 dmv_x = dmv_y = 0;
2377
2/2
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✓ Branch 1 taken 1435 times.
 12364 if (mvbp & 1)
2378 10929 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
2379 12364 ff_vc1_pred_mv_intfr(v, 2, dmv_x, dmv_y, 2, v->range_x, v->range_y, dir2);
2380
2381
2/2
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 12364 if (mvsw) {
2382
2/2
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 17559 for (i = 0; i < 2; i++) {
2383 11706 s->mv[dir][i+2][0] = s->mv[dir][i][0] = s->cur_pic.motion_val[dir][s->block_index[i+2]][0] = s->cur_pic.motion_val[dir][s->block_index[i]][0];
2384 11706 s->mv[dir][i+2][1] = s->mv[dir][i][1] = s->cur_pic.motion_val[dir][s->block_index[i+2]][1] = s->cur_pic.motion_val[dir][s->block_index[i]][1];
2385 11706 s->mv[dir2][i+2][0] = s->mv[dir2][i][0] = s->cur_pic.motion_val[dir2][s->block_index[i]][0] = s->cur_pic.motion_val[dir2][s->block_index[i+2]][0];
2386 11706 s->mv[dir2][i+2][1] = s->mv[dir2][i][1] = s->cur_pic.motion_val[dir2][s->block_index[i]][1] = s->cur_pic.motion_val[dir2][s->block_index[i+2]][1];
2387 }
2388 } else {
2389 6511 ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, !dir);
2390 6511 ff_vc1_pred_mv_intfr(v, 2, 0, 0, 2, v->range_x, v->range_y, !dir);
2391 }
2392
2393 12364 ff_vc1_mc_4mv_luma(v, 0, dir, 0);
2394 12364 ff_vc1_mc_4mv_luma(v, 1, dir, 0);
2395 12364 ff_vc1_mc_4mv_luma(v, 2, dir2, 0);
2396 12364 ff_vc1_mc_4mv_luma(v, 3, dir2, 0);
2397 12364 ff_vc1_mc_4mv_chroma4(v, dir, dir2, 0);
2398 } else {
2399 8003 dir = bmvtype == BMV_TYPE_BACKWARD;
2400
2401 8003 mvbp = ff_vc1_mbmode_intfrp[0][idx_mbmode][2];
2402 8003 dmv_x = dmv_y = 0;
2403
2/2
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 8003 if (mvbp)
2404 7691 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
2405
2406 8003 ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, dir);
2407 8003 v->blk_mv_type[s->block_index[0]] = 1;
2408 8003 v->blk_mv_type[s->block_index[1]] = 1;
2409 8003 v->blk_mv_type[s->block_index[2]] = 1;
2410 8003 v->blk_mv_type[s->block_index[3]] = 1;
2411 8003 ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, !dir);
2412
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 24009 for (i = 0; i < 2; i++) {
2413 16006 s->mv[!dir][i+2][0] = s->mv[!dir][i][0] = s->cur_pic.motion_val[!dir][s->block_index[i+2]][0] = s->cur_pic.motion_val[!dir][s->block_index[i]][0];
2414 16006 s->mv[!dir][i+2][1] = s->mv[!dir][i][1] = s->cur_pic.motion_val[!dir][s->block_index[i+2]][1] = s->cur_pic.motion_val[!dir][s->block_index[i]][1];
2415 }
2416 8003 ff_vc1_mc_1mv(v, dir);
2417 }
2418
2419
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 30997 if (cbp)
2420
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 26859 GET_MQUANT(); // p. 227
2421 30997 s->cur_pic.qscale_table[mb_pos] = mquant;
2422
3/4
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 30997 if (!v->ttmbf && cbp)
2423 26859 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
2424
2/2
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 216979 for (i = 0; i < 6; i++) {
2425 185982 s->dc_val[s->block_index[i]] = 0;
2426 185982 dst_idx += i >> 2;
2427 185982 val = ((cbp >> (5 - i)) & 1);
2428
2/2
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✓ Branch 1 taken 101646 times.
 185982 if (!fieldtx)
2429
2/2
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 84336 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
2430 else
2431
2/2
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✓ Branch 1 taken 33882 times.
 101646 off = (i & 4) ? 0 : ((i & 1) * 8 + ((i > 1) * s->linesize));
2432
2/2
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✓ Branch 1 taken 70361 times.
 185982 if (val) {
2433 346863 pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
2434 115621 first_block, s->dest[dst_idx] + off,
2435
2/2
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 115621 (i & 4) ? s->uvlinesize : (s->linesize << fieldtx),
2436 CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), &block_tt);
2437
1/2
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 115621 if (pat < 0)
2438 ✗ return pat;
2439 115621 block_cbp |= pat << (i << 2);
2440
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✓ Branch 3 taken 23297 times.
 115621 if (!v->ttmbf && ttmb < 8)
2441 92324 ttmb = -1;
2442 115621 first_block = 0;
2443 }
2444 }
2445
2446 } else { // skipped
2447 1542 dir = 0;
2448
2/2
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✓ Branch 1 taken 1542 times.
 10794 for (i = 0; i < 6; i++) {
2449 9252 v->mb_type[s->block_index[i]] = 0;
2450 9252 s->dc_val[s->block_index[i]] = 0;
2451 }
2452 1542 s->cur_pic.mb_type[mb_pos] = MB_TYPE_SKIP;
2453 1542 s->cur_pic.qscale_table[mb_pos] = 0;
2454 1542 v->blk_mv_type[s->block_index[0]] = 0;
2455 1542 v->blk_mv_type[s->block_index[1]] = 0;
2456 1542 v->blk_mv_type[s->block_index[2]] = 0;
2457 1542 v->blk_mv_type[s->block_index[3]] = 0;
2458
2459
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 1542 if (!direct) {
2460
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 215 if (bmvtype == BMV_TYPE_INTERPOLATED) {
2461 9 ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, 0);
2462 9 ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, 1);
2463 } else {
2464 206 dir = bmvtype == BMV_TYPE_BACKWARD;
2465 206 ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, dir);
2466
1/2
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 206 if (mvsw) {
2467 ✗ int dir2 = dir;
2468 ✗ if (mvsw)
2469 ✗ dir2 = !dir;
2470 ✗ for (i = 0; i < 2; i++) {
2471 ✗ s->mv[dir][i+2][0] = s->mv[dir][i][0] = s->cur_pic.motion_val[dir][s->block_index[i+2]][0] = s->cur_pic.motion_val[dir][s->block_index[i]][0];
2472 ✗ s->mv[dir][i+2][1] = s->mv[dir][i][1] = s->cur_pic.motion_val[dir][s->block_index[i+2]][1] = s->cur_pic.motion_val[dir][s->block_index[i]][1];
2473 ✗ s->mv[dir2][i+2][0] = s->mv[dir2][i][0] = s->cur_pic.motion_val[dir2][s->block_index[i]][0] = s->cur_pic.motion_val[dir2][s->block_index[i+2]][0];
2474 ✗ s->mv[dir2][i+2][1] = s->mv[dir2][i][1] = s->cur_pic.motion_val[dir2][s->block_index[i]][1] = s->cur_pic.motion_val[dir2][s->block_index[i+2]][1];
2475 }
2476 } else {
2477 206 v->blk_mv_type[s->block_index[0]] = 1;
2478 206 v->blk_mv_type[s->block_index[1]] = 1;
2479 206 v->blk_mv_type[s->block_index[2]] = 1;
2480 206 v->blk_mv_type[s->block_index[3]] = 1;
2481 206 ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, !dir);
2482
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✓ Branch 1 taken 206 times.
 618 for (i = 0; i < 2; i++) {
2483 412 s->mv[!dir][i+2][0] = s->mv[!dir][i][0] = s->cur_pic.motion_val[!dir][s->block_index[i+2]][0] = s->cur_pic.motion_val[!dir][s->block_index[i]][0];
2484 412 s->mv[!dir][i+2][1] = s->mv[!dir][i][1] = s->cur_pic.motion_val[!dir][s->block_index[i+2]][1] = s->cur_pic.motion_val[!dir][s->block_index[i]][1];
2485 }
2486 }
2487 }
2488 }
2489
2490 1542 ff_vc1_mc_1mv(v, dir);
2491
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✓ Branch 3 taken 206 times.
 1542 if (direct || bmvtype == BMV_TYPE_INTERPOLATED) {
2492 1336 ff_vc1_interp_mc(v);
2493 }
2494 1542 v->fieldtx_plane[mb_pos] = 0;
2495 }
2496 }
2497 32640 v->cbp[s->mb_x] = block_cbp;
2498 32640 v->ttblk[s->mb_x] = block_tt;
2499
2500 32640 return 0;
2501 }
2502
2503 /** Decode blocks of I-frame
2504 */
2505 90 static void vc1_decode_i_blocks(VC1Context *v)
2506 {
2507 int k, j;
2508 90 MpegEncContext *s = &v->s;
2509 int cbp, val;
2510 uint8_t *coded_val;
2511 int mb_pos;
2512
2513 /* select coding mode used for VLC tables selection */
2514
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 90 switch (v->y_ac_table_index) {
2515 11 case 0:
2516
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 11 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
2517 11 break;
2518 71 case 1:
2519 71 v->codingset = CS_HIGH_MOT_INTRA;
2520 71 break;
2521 8 case 2:
2522 8 v->codingset = CS_MID_RATE_INTRA;
2523 8 break;
2524 }
2525
2526
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 90 switch (v->c_ac_table_index) {
2527 84 case 0:
2528
2/2
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 84 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
2529 84 break;
2530 5 case 1:
2531 5 v->codingset2 = CS_HIGH_MOT_INTER;
2532 5 break;
2533 1 case 2:
2534 1 v->codingset2 = CS_MID_RATE_INTER;
2535 1 break;
2536 }
2537
2538 /* Set DC scale - y and c use the same so we only set y */
2539 90 s->y_dc_scale = ff_wmv3_dc_scale_table[v->pq];
2540
2541 //do frame decode
2542 90 s->mb_x = s->mb_y = 0;
2543 90 s->mb_intra = 1;
2544 90 s->first_slice_line = 1;
2545
2/2
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✓ Branch 1 taken 90 times.
 1104 for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
2546 1014 s->mb_x = 0;
2547 1014 init_block_index(v);
2548
2/2
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 20114 for (; s->mb_x < v->end_mb_x; s->mb_x++) {
2549 19100 update_block_index(s);
2550 19100 s->bdsp.clear_blocks(v->block[v->cur_blk_idx][0]);
2551 19100 mb_pos = s->mb_x + s->mb_y * s->mb_width;
2552 19100 s->cur_pic.mb_type[mb_pos] = MB_TYPE_INTRA;
2553 19100 s->cur_pic.qscale_table[mb_pos] = v->pq;
2554
2/2
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 95500 for (int i = 0; i < 4; i++) {
2555 76400 s->cur_pic.motion_val[1][s->block_index[i]][0] = 0;
2556 76400 s->cur_pic.motion_val[1][s->block_index[i]][1] = 0;
2557 }
2558
2559 // do actual MB decoding and displaying
2560 19100 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc,
2561 MSMP4_MB_INTRA_VLC_BITS, 2);
2562 19100 v->s.ac_pred = get_bits1(&v->s.gb);
2563
2564
2/2
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 133700 for (k = 0; k < 6; k++) {
2565 114600 v->mb_type[s->block_index[k]] = 1;
2566
2567 114600 val = ((cbp >> (5 - k)) & 1);
2568
2569
2/2
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 114600 if (k < 4) {
2570 76400 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
2571 76400 val = val ^ pred;
2572 76400 *coded_val = val;
2573 }
2574 114600 cbp |= val << (5 - k);
2575
2576
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 114600 vc1_decode_i_block(v, v->block[v->cur_blk_idx][block_map[k]], k, val, (k < 4) ? v->codingset : v->codingset2);
2577
2578 if (CONFIG_GRAY && k > 3 && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
2579 continue;
2580 114600 v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[k]]);
2581 }
2582
2583
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 19100 if (v->overlap && v->pq >= 9) {
2584 ✗ ff_vc1_i_overlap_filter(v);
2585 ✗ if (v->rangeredfrm)
2586 ✗ for (k = 0; k < 6; k++)
2587 ✗ for (j = 0; j < 64; j++)
2588 ✗ v->block[v->cur_blk_idx][block_map[k]][j] *= 2;
2589 ✗ vc1_put_blocks_clamped(v, 1);
2590 } else {
2591
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 19100 if (v->rangeredfrm)
2592
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 30240 for (k = 0; k < 6; k++)
2593
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 1684800 for (j = 0; j < 64; j++)
2594 1658880 v->block[v->cur_blk_idx][block_map[k]][j] = (v->block[v->cur_blk_idx][block_map[k]][j] - 64) * 2;
2595 19100 vc1_put_blocks_clamped(v, 0);
2596 }
2597
2598
2/2
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 19100 if (v->s.loop_filter)
2599 13160 ff_vc1_i_loop_filter(v);
2600
2601
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 19100 if (get_bits_left(&s->gb) < 0) {
2602 ✗ ff_er_add_slice(&s->er, 0, 0, s->mb_x, s->mb_y, ER_MB_ERROR);
2603 ✗ av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n",
2604 ✗ get_bits_count(&s->gb), s->gb.size_in_bits);
2605 ✗ return;
2606 }
2607
2608 19100 v->topleft_blk_idx = (v->topleft_blk_idx + 1) % (v->end_mb_x + 2);
2609 19100 v->top_blk_idx = (v->top_blk_idx + 1) % (v->end_mb_x + 2);
2610 19100 v->left_blk_idx = (v->left_blk_idx + 1) % (v->end_mb_x + 2);
2611 19100 v->cur_blk_idx = (v->cur_blk_idx + 1) % (v->end_mb_x + 2);
2612 }
2613
2614 1014 s->first_slice_line = 0;
2615 }
2616
2617 /* This is intentionally mb_height and not end_mb_y - unlike in advanced
2618 * profile, these only differ are when decoding MSS2 rectangles. */
2619 90 ff_er_add_slice(&s->er, 0, 0, s->mb_width - 1, s->mb_height - 1, ER_MB_END);
2620 }
2621
2622 /** Decode blocks of I-frame for advanced profile
2623 */
2624 28 static int vc1_decode_i_blocks_adv(VC1Context *v)
2625 {
2626 int k;
2627 28 MpegEncContext *s = &v->s;
2628 int cbp, val;
2629 uint8_t *coded_val;
2630 int mb_pos;
2631 int mquant;
2632 int mqdiff;
2633 28 GetBitContext *gb = &s->gb;
2634
2635
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 28 if (get_bits_left(gb) <= 1)
2636 ✗ return AVERROR_INVALIDDATA;
2637
2638 /* select coding mode used for VLC tables selection */
2639
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 28 switch (v->y_ac_table_index) {
2640 2 case 0:
2641
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 2 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
2642 2 break;
2643 5 case 1:
2644 5 v->codingset = CS_HIGH_MOT_INTRA;
2645 5 break;
2646 21 case 2:
2647 21 v->codingset = CS_MID_RATE_INTRA;
2648 21 break;
2649 }
2650
2651
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 28 switch (v->c_ac_table_index) {
2652 23 case 0:
2653
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 23 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
2654 23 break;
2655 ✗ case 1:
2656 ✗ v->codingset2 = CS_HIGH_MOT_INTER;
2657 ✗ break;
2658 5 case 2:
2659 5 v->codingset2 = CS_MID_RATE_INTER;
2660 5 break;
2661 }
2662
2663 // do frame decode
2664 28 s->mb_intra = 1;
2665 28 s->first_slice_line = 1;
2666 28 s->mb_x = 0;
2667 28 s->mb_y = s->start_mb_y;
2668
2/2
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 28 if (s->start_mb_y) {
2669 12 memset(&s->coded_block[(2 * s->mb_y - 1) * s->b8_stride - 2], 0,
2670 12 (1 + s->b8_stride) * sizeof(*s->coded_block));
2671 }
2672
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 390 for (; s->mb_y < s->end_mb_y; s->mb_y++) {
2673 362 s->mb_x = 0;
2674 362 init_block_index(v);
2675
2/2
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 24590 for (;s->mb_x < s->mb_width; s->mb_x++) {
2676 24228 mquant = v->pq;
2677 24228 update_block_index(s);
2678 24228 s->bdsp.clear_blocks(v->block[v->cur_blk_idx][0]);
2679 24228 mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2680 24228 s->cur_pic.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA;
2681
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 121140 for (int i = 0; i < 4; i++) {
2682 96912 s->cur_pic.motion_val[1][s->block_index[i] + v->blocks_off][0] = 0;
2683 96912 s->cur_pic.motion_val[1][s->block_index[i] + v->blocks_off][1] = 0;
2684 }
2685
2686 // do actual MB decoding and displaying
2687
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 24228 if (v->fieldtx_is_raw)
2688 ✗ v->fieldtx_plane[mb_pos] = get_bits1(&v->s.gb);
2689
1/2
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 24228 if (get_bits_left(&v->s.gb) <= 1) {
2690 ✗ ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
2691 ✗ return 0;
2692 }
2693
2694 24228 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc,
2695 MSMP4_MB_INTRA_VLC_BITS, 2);
2696
2/2
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 24228 if (v->acpred_is_raw)
2697 5340 v->s.ac_pred = get_bits1(&v->s.gb);
2698 else
2699 18888 v->s.ac_pred = v->acpred_plane[mb_pos];
2700
2701
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 24228 if (v->condover == CONDOVER_SELECT && v->overflg_is_raw)
2702 ✗ v->over_flags_plane[mb_pos] = get_bits1(&v->s.gb);
2703
2704
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 24228 GET_MQUANT();
2705
2706 24228 s->cur_pic.qscale_table[mb_pos] = mquant;
2707 /* Set DC scale - y and c use the same so we only set y */
2708 24228 s->y_dc_scale = ff_wmv3_dc_scale_table[FFABS(mquant)];
2709
2710
2/2
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 169596 for (k = 0; k < 6; k++) {
2711 145368 v->mb_type[s->block_index[k]] = 1;
2712
2713 145368 val = ((cbp >> (5 - k)) & 1);
2714
2715
2/2
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 145368 if (k < 4) {
2716 96912 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
2717 96912 val = val ^ pred;
2718 96912 *coded_val = val;
2719 }
2720 145368 cbp |= val << (5 - k);
2721
2722
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 145368 v->a_avail = !s->first_slice_line || (k == 2 || k == 3);
2723
6/6
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 145368 v->c_avail = !!s->mb_x || (k == 1 || k == 3);
2724
2725
2/2
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✓ Branch 1 taken 48456 times.
 145368 vc1_decode_i_block_adv(v, v->block[v->cur_blk_idx][block_map[k]], k, val,
2726 (k < 4) ? v->codingset : v->codingset2, mquant);
2727
2728 if (CONFIG_GRAY && k > 3 && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
2729 continue;
2730 145368 v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[k]]);
2731 }
2732
2733
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 24228 if (v->overlap && (v->pq >= 9 || v->condover != CONDOVER_NONE))
2734 798 ff_vc1_i_overlap_filter(v);
2735 24228 vc1_put_blocks_clamped(v, 1);
2736
2/2
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 24228 if (v->s.loop_filter)
2737 23628 ff_vc1_i_loop_filter(v);
2738
2739
1/2
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 24228 if (get_bits_left(&s->gb) < 0) {
2740 // TODO: may need modification to handle slice coding
2741 ✗ ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
2742 ✗ av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n",
2743 ✗ get_bits_count(&s->gb), s->gb.size_in_bits);
2744 ✗ return 0;
2745 }
2746
2/2
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 24228 inc_blk_idx(v->topleft_blk_idx);
2747
2/2
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 24228 inc_blk_idx(v->top_blk_idx);
2748
2/2
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✓ Branch 1 taken 23900 times.
 24228 inc_blk_idx(v->left_blk_idx);
2749
2/2
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✓ Branch 1 taken 23900 times.
 24228 inc_blk_idx(v->cur_blk_idx);
2750 }
2751 362 s->first_slice_line = 0;
2752 }
2753
2754 28 ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
2755 28 (s->end_mb_y << v->field_mode) - 1, ER_MB_END);
2756 28 return 0;
2757 }
2758
2759 917 static void vc1_decode_p_blocks(VC1Context *v)
2760 {
2761 917 MpegEncContext *s = &v->s;
2762 int apply_loop_filter;
2763 int ret;
2764
2765 /* select coding mode used for VLC tables selection */
2766
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 917 switch (v->c_ac_table_index) {
2767 270 case 0:
2768
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 270 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
2769 270 break;
2770 391 case 1:
2771 391 v->codingset = CS_HIGH_MOT_INTRA;
2772 391 break;
2773 256 case 2:
2774 256 v->codingset = CS_MID_RATE_INTRA;
2775 256 break;
2776 }
2777
2778
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 917 switch (v->c_ac_table_index) {
2779 270 case 0:
2780
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 270 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
2781 270 break;
2782 391 case 1:
2783 391 v->codingset2 = CS_HIGH_MOT_INTER;
2784 391 break;
2785 256 case 2:
2786 256 v->codingset2 = CS_MID_RATE_INTER;
2787 256 break;
2788 }
2789
2790
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 917 apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY);
2791 917 s->first_slice_line = 1;
2792 917 memset(v->cbp_base, 0, sizeof(v->cbp_base[0]) * 3 * s->mb_stride);
2793
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 6295 for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
2794 5379 s->mb_x = 0;
2795 5379 init_block_index(v);
2796
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 212226 for (; s->mb_x < s->mb_width; s->mb_x++) {
2797 206848 update_block_index(s);
2798
2799
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 206848 if (v->fcm == ILACE_FIELD || (v->fcm == PROGRESSIVE && v->mv_type_is_raw) || v->skip_is_raw)
2800
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 96690 if (get_bits_left(&v->s.gb) <= 1) {
2801 ✗ ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
2802 ✗ return;
2803 }
2804
2805
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 206848 if (v->fcm == ILACE_FIELD) {
2806 37920 ret = vc1_decode_p_mb_intfi(v);
2807
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 37920 if (apply_loop_filter)
2808 37920 ff_vc1_p_loop_filter(v);
2809
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 168928 } else if (v->fcm == ILACE_FRAME) {
2810 16320 ret = vc1_decode_p_mb_intfr(v);
2811
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 16320 if (apply_loop_filter)
2812 16320 ff_vc1_p_intfr_loop_filter(v);
2813 } else {
2814 152608 ret = vc1_decode_p_mb(v);
2815
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 152608 if (apply_loop_filter)
2816 93328 ff_vc1_p_loop_filter(v);
2817 }
2818
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 206848 if (ret < 0 || get_bits_left(&s->gb) < 0 || get_bits_count(&s->gb) < 0) {
2819 // TODO: may need modification to handle slice coding
2820 1 ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
2821 1 av_log(s->avctx, AV_LOG_ERROR, "Error or Bits overconsumption: %i > %i at %ix%i\n",
2822 1 get_bits_count(&s->gb), s->gb.size_in_bits, s->mb_x, s->mb_y);
2823 1 return;
2824 }
2825
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 206847 inc_blk_idx(v->topleft_blk_idx);
2826
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 206847 inc_blk_idx(v->top_blk_idx);
2827
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 206847 inc_blk_idx(v->left_blk_idx);
2828
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 206847 inc_blk_idx(v->cur_blk_idx);
2829 }
2830 5378 memmove(v->cbp_base,
2831 5378 v->cbp - s->mb_stride,
2832 5378 sizeof(v->cbp_base[0]) * 2 * s->mb_stride);
2833 5378 memmove(v->ttblk_base,
2834 5378 v->ttblk - s->mb_stride,
2835 5378 sizeof(v->ttblk_base[0]) * 2 * s->mb_stride);
2836 5378 memmove(v->is_intra_base,
2837 5378 v->is_intra - s->mb_stride,
2838 5378 sizeof(v->is_intra_base[0]) * 2 * s->mb_stride);
2839 5378 memmove(v->luma_mv_base,
2840 5378 v->luma_mv - s->mb_stride,
2841 5378 sizeof(v->luma_mv_base[0]) * 2 * s->mb_stride);
2842 5378 s->first_slice_line = 0;
2843 }
2844 916 ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
2845 916 (s->end_mb_y << v->field_mode) - 1, ER_MB_END);
2846 }
2847
2848 109 static void vc1_decode_b_blocks(VC1Context *v)
2849 {
2850 109 MpegEncContext *s = &v->s;
2851
2852 /* select coding mode used for VLC tables selection */
2853
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 109 switch (v->c_ac_table_index) {
2854 14 case 0:
2855
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 14 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
2856 14 break;
2857 16 case 1:
2858 16 v->codingset = CS_HIGH_MOT_INTRA;
2859 16 break;
2860 79 case 2:
2861 79 v->codingset = CS_MID_RATE_INTRA;
2862 79 break;
2863 }
2864
2865
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 109 switch (v->c_ac_table_index) {
2866 14 case 0:
2867
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 14 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
2868 14 break;
2869 16 case 1:
2870 16 v->codingset2 = CS_HIGH_MOT_INTER;
2871 16 break;
2872 79 case 2:
2873 79 v->codingset2 = CS_MID_RATE_INTER;
2874 79 break;
2875 }
2876
2877 109 s->first_slice_line = 1;
2878
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 1809 for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
2879 1700 s->mb_x = 0;
2880 1700 init_block_index(v);
2881
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 106820 for (; s->mb_x < s->mb_width; s->mb_x++) {
2882 105120 update_block_index(s);
2883
2884
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 105120 if (v->fcm == ILACE_FIELD || v->skip_is_raw || v->dmb_is_raw)
2885
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 51540 if (get_bits_left(&v->s.gb) <= 1) {
2886 ✗ ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
2887 ✗ return;
2888 }
2889
2890
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 105120 if (v->fcm == ILACE_FIELD) {
2891 51540 vc1_decode_b_mb_intfi(v);
2892
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 51540 if (v->s.loop_filter)
2893 51540 ff_vc1_b_intfi_loop_filter(v);
2894
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 53580 } else if (v->fcm == ILACE_FRAME) {
2895 32640 vc1_decode_b_mb_intfr(v);
2896
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 32640 if (v->s.loop_filter)
2897 32640 ff_vc1_p_intfr_loop_filter(v);
2898 } else {
2899 20940 vc1_decode_b_mb(v);
2900
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 20940 if (v->s.loop_filter)
2901 6090 ff_vc1_i_loop_filter(v);
2902 }
2903
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 105120 if (get_bits_left(&s->gb) < 0 || get_bits_count(&s->gb) < 0) {
2904 // TODO: may need modification to handle slice coding
2905 ✗ ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
2906 ✗ av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n",
2907 ✗ get_bits_count(&s->gb), s->gb.size_in_bits, s->mb_x, s->mb_y);
2908 ✗ return;
2909 }
2910 }
2911 1700 memmove(v->cbp_base,
2912 1700 v->cbp - s->mb_stride,
2913 1700 sizeof(v->cbp_base[0]) * 2 * s->mb_stride);
2914 1700 memmove(v->ttblk_base,
2915 1700 v->ttblk - s->mb_stride,
2916 1700 sizeof(v->ttblk_base[0]) * 2 * s->mb_stride);
2917 1700 memmove(v->is_intra_base,
2918 1700 v->is_intra - s->mb_stride,
2919 1700 sizeof(v->is_intra_base[0]) * 2 * s->mb_stride);
2920 1700 s->first_slice_line = 0;
2921 }
2922 109 ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
2923 109 (s->end_mb_y << v->field_mode) - 1, ER_MB_END);
2924 }
2925
2926 67 static void vc1_decode_skip_blocks(VC1Context *v)
2927 {
2928 67 MpegEncContext *s = &v->s;
2929
2930
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 67 if (!v->s.last_pic.data[0])
2931 ✗ return;
2932
2933 67 ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_width - 1, s->end_mb_y - 1, ER_MB_END);
2934 67 s->first_slice_line = 1;
2935
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 1684 for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
2936 1617 s->mb_x = 0;
2937 1617 init_block_index(v);
2938 1617 update_block_index(s);
2939 1617 memcpy(s->dest[0], s->last_pic.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
2940 1617 memcpy(s->dest[1], s->last_pic.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
2941 1617 memcpy(s->dest[2], s->last_pic.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
2942 1617 s->first_slice_line = 0;
2943 }
2944 }
2945
2946 1211 void ff_vc1_decode_blocks(VC1Context *v)
2947 {
2948
2949 1211 v->esc3_level_length = 0;
2950
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 1211 if (v->x8_type) {
2951 ✗ ff_intrax8_decode_picture(&v->x8, v->s.cur_pic.ptr,
2952 &v->s.gb, &v->s.mb_x, &v->s.mb_y,
2953 ✗ 2 * v->pq + v->halfpq, v->pq * !v->pquantizer,
2954 v->s.loop_filter, v->s.low_delay);
2955
2956 ✗ ff_er_add_slice(&v->s.er, 0, 0,
2957 ✗ (v->s.mb_x >> 1) - 1, (v->s.mb_y >> 1) - 1,
2958 ER_MB_END);
2959 } else {
2960 1211 v->cur_blk_idx = 0;
2961 1211 v->left_blk_idx = -1;
2962 1211 v->topleft_blk_idx = 1;
2963 1211 v->top_blk_idx = 2;
2964
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 1211 switch (v->s.pict_type) {
2965 118 case AV_PICTURE_TYPE_I:
2966
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 118 if (v->profile == PROFILE_ADVANCED)
2967 28 vc1_decode_i_blocks_adv(v);
2968 else
2969 90 vc1_decode_i_blocks(v);
2970 118 break;
2971 984 case AV_PICTURE_TYPE_P:
2972
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 984 if (v->p_frame_skipped)
2973 67 vc1_decode_skip_blocks(v);
2974 else
2975 917 vc1_decode_p_blocks(v);
2976 984 break;
2977 109 case AV_PICTURE_TYPE_B:
2978
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 109 if (v->bi_type) {
2979 ✗ if (v->profile == PROFILE_ADVANCED)
2980 ✗ vc1_decode_i_blocks_adv(v);
2981 else
2982 ✗ vc1_decode_i_blocks(v);
2983 } else
2984 109 vc1_decode_b_blocks(v);
2985 109 break;
2986 }
2987 }
2988 1211 }
2989