FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/vc1_block.c
Date: 2025-03-08 20:38:41
Exec Total Coverage
Lines: 1809 1920 94.2%
Functions: 25 25 100.0%
Branches: 1587 2166 73.3%
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[0][s->block_index[i] - s->block_wrap[i] - 1] :
94 697456 v->mb_type[0][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[0][s->block_index[i] - s->block_wrap[i]] :
110 21804 v->mb_type[0][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[0][s->block_index[i] - 1] :
130 276152 v->mb_type[0][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[0][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[s->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[0] + 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[0] + 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->s.esc3_level_length == 0) {
553
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 389 if (v->pq < 8 || v->dquantfrm) { // table 59
554 331 v->s.esc3_level_length = get_bits(gb, 3);
555
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 331 if (!v->s.esc3_level_length)
556 24 v->s.esc3_level_length = get_bits(gb, 2) + 8;
557 } else { // table 60
558 58 v->s.esc3_level_length = get_unary(gb, 1, 6) + 2;
559 }
560 389 v->s.esc3_run_length = 3 + get_bits(gb, 2);
561 }
562 9829 run = get_bits(gb, v->s.esc3_run_length);
563 9829 sign = get_bits1(gb);
564 9829 level = get_bits(gb, v->s.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 int i;
589 int16_t *dc_val;
590 int16_t *ac_val, *ac_val2;
591 int dcdiff, scale;
592
593 /* Get DC differential */
594 114600 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_vlc[s->dc_table_index][n >= 4],
595 MSMP4_DC_VLC_BITS, 3);
596
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 114600 if (dcdiff) {
597
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 84375 const int m = (v->pq == 1 || v->pq == 2) ? 3 - v->pq : 0;
598
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 84375 if (dcdiff == 119 /* ESC index value */) {
599 2 dcdiff = get_bits(gb, 8 + m);
600 } else {
601
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 84373 if (m)
602 31164 dcdiff = (dcdiff << m) + get_bits(gb, m) - ((1 << m) - 1);
603 }
604
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 84375 if (get_bits1(gb))
605 43828 dcdiff = -dcdiff;
606 }
607
608 /* Prediction */
609 114600 dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
610 114600 *dc_val = dcdiff;
611
612 /* Store the quantized DC coeff, used for prediction */
613 114600 block[0] = dcdiff * s->y_dc_scale;
614
615 114600 ac_val = s->ac_val[0][s->block_index[n]];
616 114600 ac_val2 = ac_val;
617
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 114600 if (dc_pred_dir) // left
618 77612 ac_val -= 16;
619 else // top
620 36988 ac_val -= 16 * s->block_wrap[n];
621
622 114600 scale = v->pq * 2 + v->halfpq;
623
624 //AC Decoding
625 114600 i = !!coded;
626
627
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 114600 if (coded) {
628 60031 int last = 0, skip, value;
629 const uint8_t *zz_table;
630 int k;
631
632
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 60031 if (v->s.ac_pred) {
633
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 14906 if (!dc_pred_dir)
634 5075 zz_table = v->zz_8x8[2];
635 else
636 9831 zz_table = v->zz_8x8[3];
637 } else
638 45125 zz_table = v->zz_8x8[1];
639
640
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 1000331 while (!last) {
641 940300 int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
642
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 940300 if (ret < 0)
643 ✗ return ret;
644 940300 i += skip;
645
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 940300 if (i > 63)
646 ✗ break;
647 940300 block[zz_table[i++]] = value;
648 }
649
650 /* apply AC prediction if needed */
651
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 60031 if (s->ac_pred) {
652 int sh;
653
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 14906 if (dc_pred_dir) { // left
654 9831 sh = v->left_blk_sh;
655 } else { // top
656 5075 sh = v->top_blk_sh;
657 5075 ac_val += 8;
658 }
659
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 119248 for (k = 1; k < 8; k++)
660 104342 block[k << sh] += ac_val[k];
661 }
662 /* save AC coeffs for further prediction */
663
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 480248 for (k = 1; k < 8; k++) {
664 420217 ac_val2[k] = block[k << v->left_blk_sh];
665 420217 ac_val2[k + 8] = block[k << v->top_blk_sh];
666 }
667
668 /* scale AC coeffs */
669
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 3841984 for (k = 1; k < 64; k++)
670
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 3781953 if (block[k]) {
671 939667 block[k] *= scale;
672
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 939667 if (!v->pquantizer)
673
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 66540 block[k] += (block[k] < 0) ? -v->pq : v->pq;
674 }
675
676 } else {
677 int k;
678
679 54569 memset(ac_val2, 0, 16 * 2);
680
681 /* apply AC prediction if needed */
682
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 54569 if (s->ac_pred) {
683 int sh;
684
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 4204 if (dc_pred_dir) { //left
685 3180 sh = v->left_blk_sh;
686 } else { // top
687 1024 sh = v->top_blk_sh;
688 1024 ac_val += 8;
689 1024 ac_val2 += 8;
690 }
691 4204 memcpy(ac_val2, ac_val, 8 * 2);
692
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 33632 for (k = 1; k < 8; k++) {
693 29428 block[k << sh] = ac_val[k] * scale;
694
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 29428 if (!v->pquantizer && block[k << sh])
695
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 590 block[k << sh] += (block[k << sh] < 0) ? -v->pq : v->pq;
696 }
697 }
698 }
699
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 114600 if (s->ac_pred) i = 63;
700 114600 s->block_last_index[n] = i;
701
702 114600 return 0;
703 }
704
705 /** Decode intra block in intra frames - should be faster than decode_intra_block
706 * @param v VC1Context
707 * @param block block to decode
708 * @param[in] n subblock number
709 * @param coded are AC coeffs present or not
710 * @param codingset set of VLC to decode data
711 * @param mquant quantizer value for this macroblock
712 */
713 145368 static int vc1_decode_i_block_adv(VC1Context *v, int16_t block[64], int n,
714 int coded, int codingset, int mquant)
715 {
716 145368 GetBitContext *gb = &v->s.gb;
717 145368 MpegEncContext *s = &v->s;
718 145368 int dc_pred_dir = 0; /* Direction of the DC prediction used */
719 int i;
720 145368 int16_t *dc_val = NULL;
721 int16_t *ac_val, *ac_val2;
722 int dcdiff;
723 145368 int a_avail = v->a_avail, c_avail = v->c_avail;
724 145368 int use_pred = s->ac_pred;
725 int scale;
726 145368 int q1, q2 = 0;
727 145368 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
728 145368 int quant = FFABS(mquant);
729
730 /* Get DC differential */
731 145368 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_vlc[s->dc_table_index][n >= 4],
732 MSMP4_DC_VLC_BITS, 3);
733
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 145368 if (dcdiff) {
734
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 100398 const int m = (quant == 1 || quant == 2) ? 3 - quant : 0;
735
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 100398 if (dcdiff == 119 /* ESC index value */) {
736 2 dcdiff = get_bits(gb, 8 + m);
737 } else {
738
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 100396 if (m)
739 13090 dcdiff = (dcdiff << m) + get_bits(gb, m) - ((1 << m) - 1);
740 }
741
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 100398 if (get_bits1(gb))
742 51735 dcdiff = -dcdiff;
743 }
744
745 /* Prediction */
746 145368 dcdiff += ff_vc1_pred_dc(&v->s, v->overlap, quant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
747 145368 *dc_val = dcdiff;
748
749 /* Store the quantized DC coeff, used for prediction */
750 145368 block[0] = dcdiff * s->y_dc_scale;
751
752 /* check if AC is needed at all */
753
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 145368 if (!a_avail && !c_avail)
754 84 use_pred = 0;
755
756
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 145368 scale = quant * 2 + ((mquant < 0) ? 0 : v->halfpq);
757
758 145368 ac_val = s->ac_val[0][s->block_index[n]];
759 145368 ac_val2 = ac_val;
760
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 145368 if (dc_pred_dir) // left
761 96277 ac_val -= 16;
762 else // top
763 49091 ac_val -= 16 * s->block_wrap[n];
764
765 145368 q1 = s->cur_pic.qscale_table[mb_pos];
766
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 145368 if (n == 3)
767 24228 q2 = q1;
768
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 121140 else if (dc_pred_dir) {
769
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 81287 if (n == 1)
770 16438 q2 = q1;
771
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 64849 else if (c_avail && mb_pos)
772 64765 q2 = s->cur_pic.qscale_table[mb_pos - 1];
773 } else {
774
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 39853 if (n == 2)
775 9816 q2 = q1;
776
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 30037 else if (a_avail && mb_pos >= s->mb_stride)
777 30037 q2 = s->cur_pic.qscale_table[mb_pos - s->mb_stride];
778 }
779
780 //AC Decoding
781 145368 i = 1;
782
783
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 145368 if (coded) {
784 131297 int last = 0, skip, value;
785 const uint8_t *zz_table;
786 int k;
787
788
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 131297 if (v->s.ac_pred) {
789
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 32458 if (!use_pred && v->fcm == ILACE_FRAME) {
790 6 zz_table = v->zzi_8x8;
791 } else {
792
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 32452 if (!dc_pred_dir) // top
793 11944 zz_table = v->zz_8x8[2];
794 else // left
795 20508 zz_table = v->zz_8x8[3];
796 }
797 } else {
798
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 98839 if (v->fcm != ILACE_FRAME)
799 25079 zz_table = v->zz_8x8[1];
800 else
801 73760 zz_table = v->zzi_8x8;
802 }
803
804
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 1693873 while (!last) {
805 1562576 int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
806
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 1562576 if (ret < 0)
807 ✗ return ret;
808 1562576 i += skip;
809
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 1562576 if (i > 63)
810 ✗ break;
811 1562576 block[zz_table[i++]] = value;
812 }
813
814 /* apply AC prediction if needed */
815
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 131297 if (use_pred) {
816 int sh;
817
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 32434 if (dc_pred_dir) { // left
818 20490 sh = v->left_blk_sh;
819 } else { // top
820 11944 sh = v->top_blk_sh;
821 11944 ac_val += 8;
822 }
823 /* scale predictors if needed*/
824
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 32434 q1 = FFABS(q1) * 2 + ((q1 < 0) ? 0 : v->halfpq) - 1;
825
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 32434 if (q1 < 1)
826 ✗ return AVERROR_INVALIDDATA;
827
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 32434 if (q2)
828
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 32434 q2 = FFABS(q2) * 2 + ((q2 < 0) ? 0 : v->halfpq) - 1;
829
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 32434 if (q2 && q1 != q2) {
830
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 16272 for (k = 1; k < 8; k++)
831 14238 block[k << sh] += (int)(ac_val[k] * (unsigned)q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
832 } else {
833
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 243200 for (k = 1; k < 8; k++)
834 212800 block[k << sh] += ac_val[k];
835 }
836 }
837 /* save AC coeffs for further prediction */
838
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 1050376 for (k = 1; k < 8; k++) {
839 919079 ac_val2[k ] = block[k << v->left_blk_sh];
840 919079 ac_val2[k + 8] = block[k << v->top_blk_sh];
841 }
842
843 /* scale AC coeffs */
844
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 8403008 for (k = 1; k < 64; k++)
845
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 8271711 if (block[k]) {
846 1560534 block[k] *= scale;
847
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 1560534 if (!v->pquantizer)
848 ✗ block[k] += (block[k] < 0) ? -quant : quant;
849 }
850
851 } else { // no AC coeffs
852 int k;
853
854 14071 memset(ac_val2, 0, 16 * 2);
855
856 /* apply AC prediction if needed */
857
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 14071 if (use_pred) {
858 int sh;
859
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 3290 if (dc_pred_dir) { // left
860 2833 sh = v->left_blk_sh;
861 } else { // top
862 457 sh = v->top_blk_sh;
863 457 ac_val += 8;
864 457 ac_val2 += 8;
865 }
866 3290 memcpy(ac_val2, ac_val, 8 * 2);
867
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 3290 q1 = FFABS(q1) * 2 + ((q1 < 0) ? 0 : v->halfpq) - 1;
868
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 3290 if (q1 < 1)
869 ✗ return AVERROR_INVALIDDATA;
870
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 3290 if (q2)
871
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 3290 q2 = FFABS(q2) * 2 + ((q2 < 0) ? 0 : v->halfpq) - 1;
872
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 3290 if (q2 && q1 != q2) {
873
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 1680 for (k = 1; k < 8; k++)
874 1470 ac_val2[k] = (int)(ac_val2[k] * q2 * (unsigned)ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
875 }
876
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 26320 for (k = 1; k < 8; k++) {
877 23030 block[k << sh] = ac_val2[k] * scale;
878
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 23030 if (!v->pquantizer && block[k << sh])
879 ✗ block[k << sh] += (block[k << sh] < 0) ? -quant : quant;
880 }
881 }
882 }
883
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 145368 if (use_pred) i = 63;
884 145368 s->block_last_index[n] = i;
885
886 145368 return 0;
887 }
888
889 /** Decode intra block in inter frames - more generic version than vc1_decode_i_block
890 * @param v VC1Context
891 * @param block block to decode
892 * @param[in] n subblock index
893 * @param coded are AC coeffs present or not
894 * @param mquant block quantizer
895 * @param codingset set of VLC to decode data
896 */
897 236242 static int vc1_decode_intra_block(VC1Context *v, int16_t block[64], int n,
898 int coded, int mquant, int codingset)
899 {
900 236242 GetBitContext *gb = &v->s.gb;
901 236242 MpegEncContext *s = &v->s;
902 236242 int dc_pred_dir = 0; /* Direction of the DC prediction used */
903 int i;
904 236242 int16_t *dc_val = NULL;
905 int16_t *ac_val, *ac_val2;
906 int dcdiff;
907 236242 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
908 236242 int a_avail = v->a_avail, c_avail = v->c_avail;
909 236242 int use_pred = s->ac_pred;
910 int scale;
911 236242 int q1, q2 = 0;
912 236242 int quant = FFABS(mquant);
913
914 236242 s->bdsp.clear_block(block);
915
916 /* XXX: Guard against dumb values of mquant */
917 236242 quant = av_clip_uintp2(quant, 5);
918
919 /* Set DC scale - y and c use the same so we only set y */
920 236242 s->y_dc_scale = ff_wmv3_dc_scale_table[quant];
921
922 /* Get DC differential */
923 236242 dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_vlc[s->dc_table_index][n >= 4],
924 MSMP4_DC_VLC_BITS, 3);
925
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 236242 if (dcdiff) {
926
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 190507 const int m = (quant == 1 || quant == 2) ? 3 - quant : 0;
927
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 190507 if (dcdiff == 119 /* ESC index value */) {
928 3 dcdiff = get_bits(gb, 8 + m);
929 } else {
930
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 190504 if (m)
931 18284 dcdiff = (dcdiff << m) + get_bits(gb, m) - ((1 << m) - 1);
932 }
933
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 190507 if (get_bits1(gb))
934 106640 dcdiff = -dcdiff;
935 }
936
937 /* Prediction */
938 236242 dcdiff += ff_vc1_pred_dc(&v->s, v->overlap, quant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
939 236242 *dc_val = dcdiff;
940
941 /* Store the quantized DC coeff, used for prediction */
942 236242 block[0] = dcdiff * s->y_dc_scale;
943
944 //AC Decoding
945 236242 i = 1;
946
947 /* check if AC is needed at all and adjust direction if needed */
948
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 236242 if (!a_avail) dc_pred_dir = 1;
949
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 236242 if (!c_avail) dc_pred_dir = 0;
950
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 236242 if (!a_avail && !c_avail) use_pred = 0;
951 236242 ac_val = s->ac_val[0][s->block_index[n]];
952 236242 ac_val2 = ac_val;
953
954
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 236242 scale = quant * 2 + ((mquant < 0) ? 0 : v->halfpq);
955
956
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 236242 if (dc_pred_dir) //left
957 113675 ac_val -= 16;
958 else //top
959 122567 ac_val -= 16 * s->block_wrap[n];
960
961 236242 q1 = s->cur_pic.qscale_table[mb_pos];
962
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 236242 if (dc_pred_dir && c_avail && mb_pos)
963 113596 q2 = s->cur_pic.qscale_table[mb_pos - 1];
964
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 236242 if (!dc_pred_dir && a_avail && mb_pos >= s->mb_stride)
965 67664 q2 = s->cur_pic.qscale_table[mb_pos - s->mb_stride];
966
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 236242 if (dc_pred_dir && n == 1)
967 34090 q2 = q1;
968
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 236242 if (!dc_pred_dir && n == 2)
969 28445 q2 = q1;
970
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 236242 if (n == 3) q2 = q1;
971
972
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 236242 if (coded) {
973 163776 int last = 0, skip, value;
974 int k;
975
976
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 1706843 while (!last) {
977 1543069 int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
978
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 1543069 if (ret < 0)
979 ✗ return ret;
980 1543069 i += skip;
981
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 1543069 if (i > 63)
982 2 break;
983
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 1543067 if (v->fcm == PROGRESSIVE)
984 925417 block[v->zz_8x8[0][i++]] = value;
985 else {
986
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 617650 if (use_pred && (v->fcm == ILACE_FRAME)) {
987
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 19188 if (!dc_pred_dir) // top
988 8623 block[v->zz_8x8[2][i++]] = value;
989 else // left
990 10565 block[v->zz_8x8[3][i++]] = value;
991 } else {
992 598462 block[v->zzi_8x8[i++]] = value;
993 }
994 }
995 }
996
997 /* apply AC prediction if needed */
998
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 163776 if (use_pred) {
999 /* scale predictors if needed*/
1000
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 43023 q1 = FFABS(q1) * 2 + ((q1 < 0) ? 0 : v->halfpq) - 1;
1001
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 43023 if (q1 < 1)
1002 ✗ return AVERROR_INVALIDDATA;
1003
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 43023 if (q2)
1004
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 43023 q2 = FFABS(q2) * 2 + ((q2 < 0) ? 0 : v->halfpq) - 1;
1005
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 43023 if (q2 && q1 != q2) {
1006
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 354 if (dc_pred_dir) { // left
1007
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 1880 for (k = 1; k < 8; k++)
1008 1645 block[k << v->left_blk_sh] += (int)(ac_val[k] * q2 * (unsigned)ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1009 } else { //top
1010
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 952 for (k = 1; k < 8; k++)
1011 833 block[k << v->top_blk_sh] += (int)(ac_val[k + 8] * q2 * (unsigned)ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1012 }
1013 } else {
1014
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 42669 if (dc_pred_dir) { // left
1015
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 205240 for (k = 1; k < 8; k++)
1016 179585 block[k << v->left_blk_sh] += ac_val[k];
1017 } else { // top
1018
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 136112 for (k = 1; k < 8; k++)
1019 119098 block[k << v->top_blk_sh] += ac_val[k + 8];
1020 }
1021 }
1022 }
1023 /* save AC coeffs for further prediction */
1024
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 1310208 for (k = 1; k < 8; k++) {
1025 1146432 ac_val2[k ] = block[k << v->left_blk_sh];
1026 1146432 ac_val2[k + 8] = block[k << v->top_blk_sh];
1027 }
1028
1029 /* scale AC coeffs */
1030
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 10481664 for (k = 1; k < 64; k++)
1031
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 10317888 if (block[k]) {
1032 1546034 block[k] *= scale;
1033
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 1546034 if (!v->pquantizer)
1034
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 28424 block[k] += (block[k] < 0) ? -quant : quant;
1035 }
1036
1037
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 163776 if (use_pred) i = 63;
1038 } else { // no AC coeffs
1039 int k;
1040
1041 72466 memset(ac_val2, 0, 16 * 2);
1042
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 72466 if (dc_pred_dir) { // left
1043
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 34095 if (use_pred) {
1044 6724 memcpy(ac_val2, ac_val, 8 * 2);
1045
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 6724 q1 = FFABS(q1) * 2 + ((q1 < 0) ? 0 : v->halfpq) - 1;
1046
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 6724 if (q1 < 1)
1047 ✗ return AVERROR_INVALIDDATA;
1048
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 6724 if (q2)
1049
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 6724 q2 = FFABS(q2) * 2 + ((q2 < 0) ? 0 : v->halfpq) - 1;
1050
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 6724 if (q2 && q1 != q2) {
1051
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 256 for (k = 1; k < 8; k++)
1052 224 ac_val2[k] = (int)(ac_val2[k] * (unsigned)q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1053 }
1054 }
1055 } else { // top
1056
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 38371 if (use_pred) {
1057 2674 memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
1058
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 2674 q1 = FFABS(q1) * 2 + ((q1 < 0) ? 0 : v->halfpq) - 1;
1059
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 2674 if (q1 < 1)
1060 ✗ return AVERROR_INVALIDDATA;
1061
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 2674 if (q2)
1062
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 2674 q2 = FFABS(q2) * 2 + ((q2 < 0) ? 0 : v->halfpq) - 1;
1063
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 2674 if (q2 && q1 != q2) {
1064
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 104 for (k = 1; k < 8; k++)
1065 91 ac_val2[k + 8] = (int)(ac_val2[k + 8] * (unsigned)q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
1066 }
1067 }
1068 }
1069
1070 /* apply AC prediction if needed */
1071
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 72466 if (use_pred) {
1072
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 9398 if (dc_pred_dir) { // left
1073
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 53792 for (k = 1; k < 8; k++) {
1074 47068 block[k << v->left_blk_sh] = ac_val2[k] * scale;
1075
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 47068 if (!v->pquantizer && block[k << v->left_blk_sh])
1076
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 127 block[k << v->left_blk_sh] += (block[k << v->left_blk_sh] < 0) ? -quant : quant;
1077 }
1078 } else { // top
1079
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 21392 for (k = 1; k < 8; k++) {
1080 18718 block[k << v->top_blk_sh] = ac_val2[k + 8] * scale;
1081
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 18718 if (!v->pquantizer && block[k << v->top_blk_sh])
1082
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 129 block[k << v->top_blk_sh] += (block[k << v->top_blk_sh] < 0) ? -quant : quant;
1083 }
1084 }
1085 9398 i = 63;
1086 }
1087 }
1088 236242 s->block_last_index[n] = i;
1089
1090 236242 return 0;
1091 }
1092
1093 /** Decode P block
1094 */
1095 705481 static int vc1_decode_p_block(VC1Context *v, int16_t block[64], int n,
1096 int mquant, int ttmb, int first_block,
1097 uint8_t *dst, int linesize, int skip_block,
1098 int *ttmb_out)
1099 {
1100 705481 MpegEncContext *s = &v->s;
1101 705481 GetBitContext *gb = &s->gb;
1102 int i, j;
1103 705481 int subblkpat = 0;
1104 int scale, off, idx, last, skip, value;
1105 705481 int ttblk = ttmb & 7;
1106 705481 int pat = 0;
1107 705481 int quant = FFABS(mquant);
1108
1109 705481 s->bdsp.clear_block(block);
1110
1111
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 705481 if (ttmb == -1) {
1112 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)];
1113 }
1114
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 705481 if (ttblk == TT_4X4) {
1115 78333 subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index], VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
1116 }
1117
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 705481 if ((ttblk != TT_8X8 && ttblk != TT_4X4)
1118
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 274082 && ((v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))
1119
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 243285 || (!v->res_rtm_flag && !first_block))) {
1120 30797 subblkpat = decode012(gb);
1121
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 30797 if (subblkpat)
1122 11209 subblkpat ^= 3; // swap decoded pattern bits
1123
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 30797 if (ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM)
1124 5739 ttblk = TT_8X4;
1125
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 30797 if (ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT)
1126 3989 ttblk = TT_4X8;
1127 }
1128
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 705481 scale = quant * 2 + ((mquant < 0) ? 0 : v->halfpq);
1129
1130 // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
1131
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 705481 if (ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
1132
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 39006 subblkpat = 2 - (ttblk == TT_8X4_TOP);
1133 39006 ttblk = TT_8X4;
1134 }
1135
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 705481 if (ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
1136
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 47678 subblkpat = 2 - (ttblk == TT_4X8_LEFT);
1137 47678 ttblk = TT_4X8;
1138 }
1139
4/5
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✓ Branch 1 taken 78333 times.
✓ Branch 2 taken 134484 times.
✓ Branch 3 taken 139598 times.
✗ Branch 4 not taken.
 705481 switch (ttblk) {
1140 353066 case TT_8X8:
1141 353066 pat = 0xF;
1142 353066 i = 0;
1143 353066 last = 0;
1144
2/2
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 2433675 while (!last) {
1145 2080609 int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
1146
1/2
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 2080609 if (ret < 0)
1147 ✗ return ret;
1148 2080609 i += skip;
1149
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 2080609 if (i > 63)
1150 ✗ break;
1151
2/2
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✓ Branch 1 taken 1145839 times.
 2080609 if (!v->fcm)
1152 934770 idx = v->zz_8x8[0][i++];
1153 else
1154 1145839 idx = v->zzi_8x8[i++];
1155 2080609 block[idx] = value * scale;
1156
2/2
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 2080609 if (!v->pquantizer)
1157
2/2
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✓ Branch 1 taken 100272 times.
 201139 block[idx] += (block[idx] < 0) ? -quant : quant;
1158 }
1159
1/2
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 353066 if (!skip_block) {
1160
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 353066 if (i == 1)
1161 48601 v->vc1dsp.vc1_inv_trans_8x8_dc(dst, linesize, block);
1162 else {
1163 304465 v->vc1dsp.vc1_inv_trans_8x8(block);
1164 304465 s->idsp.add_pixels_clamped(block, dst, linesize);
1165 }
1166 }
1167 353066 break;
1168 78333 case TT_4X4:
1169 78333 pat = ~subblkpat & 0xF;
1170
2/2
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✓ Branch 1 taken 78333 times.
 391665 for (j = 0; j < 4; j++) {
1171 313332 last = subblkpat & (1 << (3 - j));
1172 313332 i = 0;
1173 313332 off = (j & 1) * 4 + (j & 2) * 16;
1174
2/2
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 826087 while (!last) {
1175 512755 int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
1176
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 512755 if (ret < 0)
1177 ✗ return ret;
1178 512755 i += skip;
1179
1/2
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 512755 if (i > 15)
1180 ✗ break;
1181
2/2
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✓ Branch 1 taken 229283 times.
 512755 if (!v->fcm)
1182 283472 idx = ff_vc1_simple_progressive_4x4_zz[i++];
1183 else
1184 229283 idx = ff_vc1_adv_interlaced_4x4_zz[i++];
1185 512755 block[idx + off] = value * scale;
1186
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 512755 if (!v->pquantizer)
1187
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✓ Branch 1 taken 4856 times.
 9718 block[idx + off] += (block[idx + off] < 0) ? -quant : quant;
1188 }
1189
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 313332 if (!(subblkpat & (1 << (3 - j))) && !skip_block) {
1190
2/2
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 191401 if (i == 1)
1191 21249 v->vc1dsp.vc1_inv_trans_4x4_dc(dst + (j & 1) * 4 + (j & 2) * 2 * linesize, linesize, block + off);
1192 else
1193 170152 v->vc1dsp.vc1_inv_trans_4x4(dst + (j & 1) * 4 + (j & 2) * 2 * linesize, linesize, block + off);
1194 }
1195 }
1196 78333 break;
1197 134484 case TT_8X4:
1198 134484 pat = ~((subblkpat & 2) * 6 + (subblkpat & 1) * 3) & 0xF;
1199
2/2
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 403452 for (j = 0; j < 2; j++) {
1200 268968 last = subblkpat & (1 << (1 - j));
1201 268968 i = 0;
1202 268968 off = j * 32;
1203
2/2
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✓ Branch 1 taken 268968 times.
 1171607 while (!last) {
1204 902639 int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
1205
1/2
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 902639 if (ret < 0)
1206 ✗ return ret;
1207 902639 i += skip;
1208
1/2
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 902639 if (i > 31)
1209 ✗ break;
1210
2/2
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 902639 if (!v->fcm)
1211 470573 idx = v->zz_8x4[i++] + off;
1212 else
1213 432066 idx = ff_vc1_adv_interlaced_8x4_zz[i++] + off;
1214 902639 block[idx] = value * scale;
1215
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 902639 if (!v->pquantizer)
1216
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 9538 block[idx] += (block[idx] < 0) ? -quant : quant;
1217 }
1218
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 268968 if (!(subblkpat & (1 << (1 - j))) && !skip_block) {
1219
2/2
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 223232 if (i == 1)
1220 15847 v->vc1dsp.vc1_inv_trans_8x4_dc(dst + j * 4 * linesize, linesize, block + off);
1221 else
1222 207385 v->vc1dsp.vc1_inv_trans_8x4(dst + j * 4 * linesize, linesize, block + off);
1223 }
1224 }
1225 134484 break;
1226 139598 case TT_4X8:
1227 139598 pat = ~(subblkpat * 5) & 0xF;
1228
2/2
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 418794 for (j = 0; j < 2; j++) {
1229 279196 last = subblkpat & (1 << (1 - j));
1230 279196 i = 0;
1231 279196 off = j * 4;
1232
2/2
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 1161199 while (!last) {
1233 882009 int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
1234
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 882009 if (ret < 0)
1235 ✗ return ret;
1236 882009 i += skip;
1237
2/2
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 882009 if (i > 31)
1238 6 break;
1239
2/2
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 882003 if (!v->fcm)
1240 432119 idx = v->zz_4x8[i++] + off;
1241 else
1242 449884 idx = ff_vc1_adv_interlaced_4x8_zz[i++] + off;
1243 882003 block[idx] = value * scale;
1244
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 882003 if (!v->pquantizer)
1245
2/2
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 10845 block[idx] += (block[idx] < 0) ? -quant : quant;
1246 }
1247
3/4
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 279196 if (!(subblkpat & (1 << (1 - j))) && !skip_block) {
1248
2/2
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 227039 if (i == 1)
1249 17934 v->vc1dsp.vc1_inv_trans_4x8_dc(dst + j * 4, linesize, block + off);
1250 else
1251 209105 v->vc1dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off);
1252 }
1253 }
1254 139598 break;
1255 }
1256
2/2
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 705481 if (ttmb_out)
1257 648016 *ttmb_out |= ttblk << (n * 4);
1258 705481 return pat;
1259 }
1260
1261 /** @} */ // Macroblock group
1262
1263 static const uint8_t size_table[6] = { 0, 2, 3, 4, 5, 8 };
1264
1265 /** Decode one P-frame MB
1266 */
1267 152608 static int vc1_decode_p_mb(VC1Context *v)
1268 {
1269 152608 MpegEncContext *s = &v->s;
1270 152608 GetBitContext *gb = &s->gb;
1271 int i, j;
1272 152608 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1273 int cbp; /* cbp decoding stuff */
1274 int mqdiff, mquant; /* MB quantization */
1275 152608 int ttmb = v->ttfrm; /* MB Transform type */
1276
1277 152608 int mb_has_coeffs = 1; /* last_flag */
1278 int dmv_x, dmv_y; /* Differential MV components */
1279 int index, index1; /* LUT indexes */
1280 int val, sign; /* temp values */
1281 152608 int first_block = 1;
1282 int dst_idx, off;
1283 int skipped, fourmv;
1284 152608 int block_cbp = 0, pat, block_tt = 0, block_intra = 0;
1285 int ret;
1286
1287 152608 mquant = v->pq; /* lossy initialization */
1288
1289
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 152608 if (v->mv_type_is_raw)
1290 58770 fourmv = get_bits1(gb);
1291 else
1292 93838 fourmv = v->mv_type_mb_plane[mb_pos];
1293
2/2
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 152608 if (v->skip_is_raw)
1294 58470 skipped = get_bits1(gb);
1295 else
1296 94138 skipped = v->s.mbskip_table[mb_pos];
1297
1298
2/2
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 152608 if (!fourmv) { /* 1MV mode */
1299
2/2
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 126032 if (!skipped) {
1300
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 113910 GET_MVDATA(dmv_x, dmv_y);
1301
1302
2/2
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 113910 if (s->mb_intra) {
1303 24987 s->cur_pic.motion_val[1][s->block_index[0]][0] = 0;
1304 24987 s->cur_pic.motion_val[1][s->block_index[0]][1] = 0;
1305 }
1306
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 113910 s->cur_pic.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
1307 113910 ff_vc1_pred_mv(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 0, 0);
1308
1309 /* FIXME Set DC val for inter block ? */
1310
4/4
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 113910 if (s->mb_intra && !mb_has_coeffs) {
1311
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 2748 GET_MQUANT();
1312 2748 s->ac_pred = get_bits1(gb);
1313 2748 cbp = 0;
1314
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 111162 } else if (mb_has_coeffs) {
1315
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 92378 if (s->mb_intra)
1316 22239 s->ac_pred = get_bits1(gb);
1317 92378 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
1318
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 92378 GET_MQUANT();
1319 } else {
1320 18784 mquant = v->pq;
1321 18784 cbp = 0;
1322 }
1323 113910 s->cur_pic.qscale_table[mb_pos] = mquant;
1324
1325
6/6
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 113910 if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
1326 42234 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index],
1327 VC1_TTMB_VLC_BITS, 2);
1328
2/2
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 113910 if (!s->mb_intra) ff_vc1_mc_1mv(v, 0);
1329 113910 dst_idx = 0;
1330
2/2
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 797370 for (i = 0; i < 6; i++) {
1331 683460 s->dc_val[0][s->block_index[i]] = 0;
1332 683460 dst_idx += i >> 2;
1333 683460 val = ((cbp >> (5 - i)) & 1);
1334
2/2
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 683460 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
1335 683460 v->mb_type[0][s->block_index[i]] = s->mb_intra;
1336
2/2
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 683460 if (s->mb_intra) {
1337 /* check if prediction blocks A and C are available */
1338 149922 v->a_avail = v->c_avail = 0;
1339
6/6
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 149922 if (i == 2 || i == 3 || !s->first_slice_line)
1340 110530 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
1341
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 149922 if (i == 1 || i == 3 || s->mb_x)
1342 147306 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
1343
1344 149922 ret = vc1_decode_intra_block(v, v->block[v->cur_blk_idx][block_map[i]], i, val, mquant,
1345
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 149922 (i & 4) ? v->codingset2 : v->codingset);
1346
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 149922 if (ret < 0)
1347 ✗ return ret;
1348 if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
1349 continue;
1350 149922 v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[i]]);
1351
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 149922 if (v->rangeredfrm)
1352 ✗ for (j = 0; j < 64; j++)
1353 ✗ v->block[v->cur_blk_idx][block_map[i]][j] *= 2;
1354 149922 block_cbp |= 0xF << (i << 2);
1355 149922 block_intra |= 1 << i;
1356
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 533538 } else if (val) {
1357 658434 pat = vc1_decode_p_block(v, v->block[v->cur_blk_idx][block_map[i]], i, mquant, ttmb, first_block,
1358
2/2
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 219478 s->dest[dst_idx] + off, (i & 4) ? s->uvlinesize : s->linesize,
1359 CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), &block_tt);
1360
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 219478 if (pat < 0)
1361 ✗ return pat;
1362 219478 block_cbp |= pat << (i << 2);
1363
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 219478 if (!v->ttmbf && ttmb < 8)
1364 87522 ttmb = -1;
1365 219478 first_block = 0;
1366 }
1367 }
1368 } else { // skipped
1369 12122 s->mb_intra = 0;
1370
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 84854 for (i = 0; i < 6; i++) {
1371 72732 v->mb_type[0][s->block_index[i]] = 0;
1372 72732 s->dc_val[0][s->block_index[i]] = 0;
1373 }
1374 12122 s->cur_pic.mb_type[mb_pos] = MB_TYPE_SKIP;
1375 12122 s->cur_pic.qscale_table[mb_pos] = 0;
1376 12122 ff_vc1_pred_mv(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 0, 0);
1377 12122 ff_vc1_mc_1mv(v, 0);
1378 }
1379 } else { // 4MV mode
1380
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 26576 if (!skipped /* unskipped MB */) {
1381 22855 int intra_count = 0, coded_inter = 0;
1382 int is_intra[6], is_coded[6];
1383 /* Get CBPCY */
1384 22855 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
1385
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 159985 for (i = 0; i < 6; i++) {
1386 137130 val = ((cbp >> (5 - i)) & 1);
1387 137130 s->dc_val[0][s->block_index[i]] = 0;
1388 137130 s->mb_intra = 0;
1389
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 137130 if (i < 4) {
1390 91420 dmv_x = dmv_y = 0;
1391 91420 s->mb_intra = 0;
1392 91420 mb_has_coeffs = 0;
1393
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 91420 if (val) {
1394
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 71997 GET_MVDATA(dmv_x, dmv_y);
1395 }
1396 91420 ff_vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], 0, 0);
1397
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 91420 if (!s->mb_intra)
1398 80856 ff_vc1_mc_4mv_luma(v, i, 0, 0);
1399 91420 intra_count += s->mb_intra;
1400 91420 is_intra[i] = s->mb_intra;
1401 91420 is_coded[i] = mb_has_coeffs;
1402 }
1403
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 137130 if (i & 4) {
1404 45710 is_intra[i] = (intra_count >= 3);
1405 45710 is_coded[i] = val;
1406 }
1407
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 137130 if (i == 4)
1408 22855 ff_vc1_mc_4mv_chroma(v, 0);
1409 137130 v->mb_type[0][s->block_index[i]] = is_intra[i];
1410
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 137130 if (!coded_inter)
1411 52317 coded_inter = !is_intra[i] & is_coded[i];
1412 }
1413 // if there are no coded blocks then don't do anything more
1414 22855 dst_idx = 0;
1415
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 22855 if (!intra_count && !coded_inter)
1416 2699 goto end;
1417
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 20156 GET_MQUANT();
1418 20156 s->cur_pic.qscale_table[mb_pos] = mquant;
1419 /* test if block is intra and has pred */
1420 {
1421 20156 int intrapred = 0;
1422
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 122744 for (i = 0; i < 6; i++)
1423
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 106282 if (is_intra[i]) {
1424
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 7257 if (((!s->first_slice_line || (i == 2 || i == 3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
1425
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 5463 || ((s->mb_x || (i == 1 || i == 3)) && v->mb_type[0][s->block_index[i] - 1])) {
1426 3694 intrapred = 1;
1427 3694 break;
1428 }
1429 }
1430
2/2
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 20156 if (intrapred)
1431 3694 s->ac_pred = get_bits1(gb);
1432 else
1433 16462 s->ac_pred = 0;
1434 }
1435
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 20156 if (!v->ttmbf && coded_inter)
1436 18220 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
1437
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 141092 for (i = 0; i < 6; i++) {
1438 120936 dst_idx += i >> 2;
1439
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 120936 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
1440 120936 s->mb_intra = is_intra[i];
1441
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 120936 if (is_intra[i]) {
1442 /* check if prediction blocks A and C are available */
1443 13000 v->a_avail = v->c_avail = 0;
1444
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 13000 if (i == 2 || i == 3 || !s->first_slice_line)
1445 10021 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
1446
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 13000 if (i == 1 || i == 3 || s->mb_x)
1447 12804 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
1448
1449 13000 ret = vc1_decode_intra_block(v, v->block[v->cur_blk_idx][block_map[i]], i, is_coded[i], mquant,
1450
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 13000 (i & 4) ? v->codingset2 : v->codingset);
1451
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 13000 if (ret < 0)
1452 ✗ return ret;
1453 if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
1454 continue;
1455 13000 v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[i]]);
1456
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 13000 if (v->rangeredfrm)
1457 ✗ for (j = 0; j < 64; j++)
1458 ✗ v->block[v->cur_blk_idx][block_map[i]][j] *= 2;
1459 13000 block_cbp |= 0xF << (i << 2);
1460 13000 block_intra |= 1 << i;
1461
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 107936 } else if (is_coded[i]) {
1462 200115 pat = vc1_decode_p_block(v, v->block[v->cur_blk_idx][block_map[i]], i, mquant, ttmb,
1463 66705 first_block, s->dest[dst_idx] + off,
1464
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 66705 (i & 4) ? s->uvlinesize : s->linesize,
1465 CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY),
1466 &block_tt);
1467
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 66705 if (pat < 0)
1468 ✗ return pat;
1469 66705 block_cbp |= pat << (i << 2);
1470
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 66705 if (!v->ttmbf && ttmb < 8)
1471 44004 ttmb = -1;
1472 66705 first_block = 0;
1473 }
1474 }
1475 } else { // skipped MB
1476 3721 s->mb_intra = 0;
1477 3721 s->cur_pic.qscale_table[mb_pos] = 0;
1478
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 26047 for (i = 0; i < 6; i++) {
1479 22326 v->mb_type[0][s->block_index[i]] = 0;
1480 22326 s->dc_val[0][s->block_index[i]] = 0;
1481 }
1482
2/2
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 18605 for (i = 0; i < 4; i++) {
1483 14884 ff_vc1_pred_mv(v, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0], 0, 0);
1484 14884 ff_vc1_mc_4mv_luma(v, i, 0, 0);
1485 }
1486 3721 ff_vc1_mc_4mv_chroma(v, 0);
1487 3721 s->cur_pic.qscale_table[mb_pos] = 0;
1488 }
1489 }
1490 152608 end:
1491
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 152608 if (v->overlap && v->pq >= 9)
1492 ✗ ff_vc1_p_overlap_filter(v);
1493 152608 vc1_put_blocks_clamped(v, 1);
1494
1495 152608 v->cbp[s->mb_x] = block_cbp;
1496 152608 v->ttblk[s->mb_x] = block_tt;
1497 152608 v->is_intra[s->mb_x] = block_intra;
1498
1499 152608 return 0;
1500 }
1501
1502 /* Decode one macroblock in an interlaced frame p picture */
1503
1504 16320 static int vc1_decode_p_mb_intfr(VC1Context *v)
1505 {
1506 16320 MpegEncContext *s = &v->s;
1507 16320 GetBitContext *gb = &s->gb;
1508 int i;
1509 16320 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1510 16320 int cbp = 0; /* cbp decoding stuff */
1511 int mqdiff, mquant; /* MB quantization */
1512 16320 int ttmb = v->ttfrm; /* MB Transform type */
1513
1514 16320 int mb_has_coeffs = 1; /* last_flag */
1515 int dmv_x, dmv_y; /* Differential MV components */
1516 int val; /* temp value */
1517 16320 int first_block = 1;
1518 int dst_idx, off;
1519 16320 int skipped, fourmv = 0, twomv = 0;
1520 16320 int block_cbp = 0, pat, block_tt = 0;
1521 16320 int idx_mbmode = 0, mvbp;
1522 int fieldtx;
1523 int ret;
1524
1525 16320 mquant = v->pq; /* Lossy initialization */
1526
1527
1/2
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 16320 if (v->skip_is_raw)
1528 ✗ skipped = get_bits1(gb);
1529 else
1530 16320 skipped = v->s.mbskip_table[mb_pos];
1531
2/2
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 16320 if (!skipped) {
1532
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 16307 if (v->fourmvswitch)
1533 16307 idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_INTFR_4MV_MBMODE_VLC_BITS, 2); // try getting this done
1534 else
1535 ✗ idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2); // in a single line
1536
5/5
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 16307 switch (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0]) {
1537 /* store the motion vector type in a flag (useful later) */
1538 704 case MV_PMODE_INTFR_4MV:
1539 704 fourmv = 1;
1540 704 v->blk_mv_type[s->block_index[0]] = 0;
1541 704 v->blk_mv_type[s->block_index[1]] = 0;
1542 704 v->blk_mv_type[s->block_index[2]] = 0;
1543 704 v->blk_mv_type[s->block_index[3]] = 0;
1544 704 break;
1545 1084 case MV_PMODE_INTFR_4MV_FIELD:
1546 1084 fourmv = 1;
1547 1084 v->blk_mv_type[s->block_index[0]] = 1;
1548 1084 v->blk_mv_type[s->block_index[1]] = 1;
1549 1084 v->blk_mv_type[s->block_index[2]] = 1;
1550 1084 v->blk_mv_type[s->block_index[3]] = 1;
1551 1084 break;
1552 4797 case MV_PMODE_INTFR_2MV_FIELD:
1553 4797 twomv = 1;
1554 4797 v->blk_mv_type[s->block_index[0]] = 1;
1555 4797 v->blk_mv_type[s->block_index[1]] = 1;
1556 4797 v->blk_mv_type[s->block_index[2]] = 1;
1557 4797 v->blk_mv_type[s->block_index[3]] = 1;
1558 4797 break;
1559 8046 case MV_PMODE_INTFR_1MV:
1560 8046 v->blk_mv_type[s->block_index[0]] = 0;
1561 8046 v->blk_mv_type[s->block_index[1]] = 0;
1562 8046 v->blk_mv_type[s->block_index[2]] = 0;
1563 8046 v->blk_mv_type[s->block_index[3]] = 0;
1564 8046 break;
1565 }
1566
2/2
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 16307 if (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_INTRA) { // intra MB
1567
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 8380 for (i = 0; i < 4; i++) {
1568 6704 s->cur_pic.motion_val[1][s->block_index[i]][0] = 0;
1569 6704 s->cur_pic.motion_val[1][s->block_index[i]][1] = 0;
1570 }
1571 1676 v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1.
1572 1676 s->mb_intra = 1;
1573 1676 s->cur_pic.mb_type[mb_pos] = MB_TYPE_INTRA;
1574 1676 fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb);
1575 1676 mb_has_coeffs = get_bits1(gb);
1576
2/2
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 1676 if (mb_has_coeffs)
1577 1615 cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
1578 1676 v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
1579
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 1676 GET_MQUANT();
1580 1676 s->cur_pic.qscale_table[mb_pos] = mquant;
1581 /* Set DC scale - y and c use the same so we only set y */
1582 1676 s->y_dc_scale = ff_wmv3_dc_scale_table[FFABS(mquant)];
1583 1676 dst_idx = 0;
1584
2/2
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 11732 for (i = 0; i < 6; i++) {
1585 10056 v->a_avail = v->c_avail = 0;
1586 10056 v->mb_type[0][s->block_index[i]] = 1;
1587 10056 s->dc_val[0][s->block_index[i]] = 0;
1588 10056 dst_idx += i >> 2;
1589 10056 val = ((cbp >> (5 - i)) & 1);
1590
6/6
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 10056 if (i == 2 || i == 3 || !s->first_slice_line)
1591 9840 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
1592
6/6
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 10056 if (i == 1 || i == 3 || s->mb_x)
1593 10000 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
1594
1595 10056 ret = vc1_decode_intra_block(v, v->block[v->cur_blk_idx][block_map[i]], i, val, mquant,
1596
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 10056 (i & 4) ? v->codingset2 : v->codingset);
1597
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 10056 if (ret < 0)
1598 ✗ return ret;
1599 if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
1600 continue;
1601 10056 v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[i]]);
1602 10056 block_cbp |= 0xf << (i << 2);
1603 }
1604
1605 } else { // inter MB
1606 14631 mb_has_coeffs = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][3];
1607
2/2
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 14631 if (mb_has_coeffs)
1608 13330 cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
1609
2/2
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 14631 if (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) {
1610 4797 v->twomvbp = get_vlc2(gb, v->twomvbp_vlc, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1);
1611 } else {
1612
2/2
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 9834 if ((ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_4MV)
1613
2/2
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 9130 || (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_4MV_FIELD)) {
1614 1788 v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
1615 }
1616 }
1617 14631 s->mb_intra = v->is_intra[s->mb_x] = 0;
1618
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 102417 for (i = 0; i < 6; i++)
1619 87786 v->mb_type[0][s->block_index[i]] = 0;
1620 14631 fieldtx = v->fieldtx_plane[mb_pos] = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][1];
1621 /* for all motion vector read MVDATA and motion compensate each block */
1622 14631 dst_idx = 0;
1623
2/2
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 14631 if (fourmv) {
1624 1788 mvbp = v->fourmvbp;
1625
2/2
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 8940 for (i = 0; i < 4; i++) {
1626 7152 dmv_x = dmv_y = 0;
1627
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 7152 if (mvbp & (8 >> i))
1628 5798 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
1629 7152 ff_vc1_pred_mv_intfr(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, 0);
1630 7152 ff_vc1_mc_4mv_luma(v, i, 0, 0);
1631 }
1632 1788 ff_vc1_mc_4mv_chroma4(v, 0, 0, 0);
1633
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 12843 } else if (twomv) {
1634 4797 mvbp = v->twomvbp;
1635 4797 dmv_x = dmv_y = 0;
1636
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 4797 if (mvbp & 2) {
1637 4513 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
1638 }
1639 4797 ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 2, v->range_x, v->range_y, 0);
1640 4797 ff_vc1_mc_4mv_luma(v, 0, 0, 0);
1641 4797 ff_vc1_mc_4mv_luma(v, 1, 0, 0);
1642 4797 dmv_x = dmv_y = 0;
1643
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 4797 if (mvbp & 1) {
1644 4517 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
1645 }
1646 4797 ff_vc1_pred_mv_intfr(v, 2, dmv_x, dmv_y, 2, v->range_x, v->range_y, 0);
1647 4797 ff_vc1_mc_4mv_luma(v, 2, 0, 0);
1648 4797 ff_vc1_mc_4mv_luma(v, 3, 0, 0);
1649 4797 ff_vc1_mc_4mv_chroma4(v, 0, 0, 0);
1650 } else {
1651 8046 mvbp = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][2];
1652 8046 dmv_x = dmv_y = 0;
1653
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 8046 if (mvbp) {
1654 7892 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
1655 }
1656 8046 ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, 0);
1657 8046 ff_vc1_mc_1mv(v, 0);
1658 }
1659
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 14631 if (cbp)
1660
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 13330 GET_MQUANT(); // p. 227
1661 14631 s->cur_pic.qscale_table[mb_pos] = mquant;
1662
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 14631 if (!v->ttmbf && cbp)
1663 13330 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
1664
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 102417 for (i = 0; i < 6; i++) {
1665 87786 s->dc_val[0][s->block_index[i]] = 0;
1666 87786 dst_idx += i >> 2;
1667 87786 val = ((cbp >> (5 - i)) & 1);
1668
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 87786 if (!fieldtx)
1669
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 70050 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
1670 else
1671
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 17736 off = (i & 4) ? 0 : ((i & 1) * 8 + ((i > 1) * s->linesize));
1672
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 87786 if (val) {
1673 190881 pat = vc1_decode_p_block(v, v->block[v->cur_blk_idx][block_map[i]], i, mquant, ttmb,
1674 63627 first_block, s->dest[dst_idx] + off,
1675
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 63627 (i & 4) ? s->uvlinesize : (s->linesize << fieldtx),
1676 CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), &block_tt);
1677
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 63627 if (pat < 0)
1678 ✗ return pat;
1679 63627 block_cbp |= pat << (i << 2);
1680
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 63627 if (!v->ttmbf && ttmb < 8)
1681 44047 ttmb = -1;
1682 63627 first_block = 0;
1683 }
1684 }
1685 }
1686 } else { // skipped
1687 13 s->mb_intra = v->is_intra[s->mb_x] = 0;
1688
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 91 for (i = 0; i < 6; i++) {
1689 78 v->mb_type[0][s->block_index[i]] = 0;
1690 78 s->dc_val[0][s->block_index[i]] = 0;
1691 }
1692 13 s->cur_pic.mb_type[mb_pos] = MB_TYPE_SKIP;
1693 13 s->cur_pic.qscale_table[mb_pos] = 0;
1694 13 v->blk_mv_type[s->block_index[0]] = 0;
1695 13 v->blk_mv_type[s->block_index[1]] = 0;
1696 13 v->blk_mv_type[s->block_index[2]] = 0;
1697 13 v->blk_mv_type[s->block_index[3]] = 0;
1698 13 ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, 0);
1699 13 ff_vc1_mc_1mv(v, 0);
1700 13 v->fieldtx_plane[mb_pos] = 0;
1701 }
1702
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 16320 if (v->overlap && v->pq >= 9)
1703 ✗ ff_vc1_p_overlap_filter(v);
1704 16320 vc1_put_blocks_clamped(v, 1);
1705
1706 16320 v->cbp[s->mb_x] = block_cbp;
1707 16320 v->ttblk[s->mb_x] = block_tt;
1708
1709 16320 return 0;
1710 }
1711
1712 37920 static int vc1_decode_p_mb_intfi(VC1Context *v)
1713 {
1714 37920 MpegEncContext *s = &v->s;
1715 37920 GetBitContext *gb = &s->gb;
1716 int i;
1717 37920 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1718 37920 int cbp = 0; /* cbp decoding stuff */
1719 int mqdiff, mquant; /* MB quantization */
1720 37920 int ttmb = v->ttfrm; /* MB Transform type */
1721
1722 37920 int mb_has_coeffs = 1; /* last_flag */
1723 int dmv_x, dmv_y; /* Differential MV components */
1724 int val; /* temp values */
1725 37920 int first_block = 1;
1726 int dst_idx, off;
1727 37920 int pred_flag = 0;
1728 37920 int block_cbp = 0, pat, block_tt = 0;
1729 37920 int idx_mbmode = 0;
1730 int ret;
1731
1732 37920 mquant = v->pq; /* Lossy initialization */
1733
1734 37920 idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_IF_MBMODE_VLC_BITS, 2);
1735
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 37920 if (idx_mbmode <= 1) { // intra MB
1736 10225 v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1.
1737 10225 s->mb_intra = 1;
1738 10225 s->cur_pic.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0;
1739 10225 s->cur_pic.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0;
1740 10225 s->cur_pic.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA;
1741
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 10225 GET_MQUANT();
1742 10225 s->cur_pic.qscale_table[mb_pos] = mquant;
1743 /* Set DC scale - y and c use the same so we only set y */
1744 10225 s->y_dc_scale = ff_wmv3_dc_scale_table[FFABS(mquant)];
1745 10225 v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
1746 10225 mb_has_coeffs = idx_mbmode & 1;
1747
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 10225 if (mb_has_coeffs)
1748 9472 cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_ICBPCY_VLC_BITS, 2);
1749 10225 dst_idx = 0;
1750
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 71575 for (i = 0; i < 6; i++) {
1751 61350 v->a_avail = v->c_avail = 0;
1752 61350 v->mb_type[0][s->block_index[i]] = 1;
1753 61350 s->dc_val[0][s->block_index[i]] = 0;
1754 61350 dst_idx += i >> 2;
1755 61350 val = ((cbp >> (5 - i)) & 1);
1756
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 61350 if (i == 2 || i == 3 || !s->first_slice_line)
1757 58782 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
1758
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 61350 if (i == 1 || i == 3 || s->mb_x)
1759 60566 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
1760
1761 61350 ret = vc1_decode_intra_block(v, v->block[v->cur_blk_idx][block_map[i]], i, val, mquant,
1762
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 61350 (i & 4) ? v->codingset2 : v->codingset);
1763
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 61350 if (ret < 0)
1764 ✗ return ret;
1765 if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
1766 continue;
1767 61350 v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[i]]);
1768 61350 block_cbp |= 0xf << (i << 2);
1769 }
1770 } else {
1771 27695 s->mb_intra = v->is_intra[s->mb_x] = 0;
1772 27695 s->cur_pic.mb_type[mb_pos + v->mb_off] = MB_TYPE_16x16;
1773
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 193865 for (i = 0; i < 6; i++)
1774 166170 v->mb_type[0][s->block_index[i]] = 0;
1775
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 27695 if (idx_mbmode <= 5) { // 1-MV
1776 20627 dmv_x = dmv_y = pred_flag = 0;
1777
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 20627 if (idx_mbmode & 1) {
1778 15875 get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag);
1779 }
1780 20627 ff_vc1_pred_mv(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], pred_flag, 0);
1781 20627 ff_vc1_mc_1mv(v, 0);
1782 20627 mb_has_coeffs = !(idx_mbmode & 2);
1783 } else { // 4-MV
1784 7068 v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
1785
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 35340 for (i = 0; i < 4; i++) {
1786 28272 dmv_x = dmv_y = pred_flag = 0;
1787
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 28272 if (v->fourmvbp & (8 >> i))
1788 8553 get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag);
1789 28272 ff_vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], pred_flag, 0);
1790 28272 ff_vc1_mc_4mv_luma(v, i, 0, 0);
1791 }
1792 7068 ff_vc1_mc_4mv_chroma(v, 0);
1793 7068 mb_has_coeffs = idx_mbmode & 1;
1794 }
1795
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 27695 if (mb_has_coeffs)
1796 20790 cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
1797
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 27695 if (cbp) {
1798
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 20790 GET_MQUANT();
1799 }
1800 27695 s->cur_pic.qscale_table[mb_pos] = mquant;
1801
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 27695 if (!v->ttmbf && cbp) {
1802 20790 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
1803 }
1804 27695 dst_idx = 0;
1805
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 193865 for (i = 0; i < 6; i++) {
1806 166170 s->dc_val[0][s->block_index[i]] = 0;
1807 166170 dst_idx += i >> 2;
1808 166170 val = ((cbp >> (5 - i)) & 1);
1809
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 166170 off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize;
1810
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 166170 if (val) {
1811 273345 pat = vc1_decode_p_block(v, v->block[v->cur_blk_idx][block_map[i]], i, mquant, ttmb,
1812 91115 first_block, s->dest[dst_idx] + off,
1813
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 91115 (i & 4) ? s->uvlinesize : s->linesize,
1814 CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY),
1815 &block_tt);
1816
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 91115 if (pat < 0)
1817 ✗ return pat;
1818 91115 block_cbp |= pat << (i << 2);
1819
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 91115 if (!v->ttmbf && ttmb < 8)
1820 59029 ttmb = -1;
1821 91115 first_block = 0;
1822 }
1823 }
1824 }
1825
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 37920 if (v->overlap && v->pq >= 9)
1826 ✗ ff_vc1_p_overlap_filter(v);
1827 37920 vc1_put_blocks_clamped(v, 1);
1828
1829 37920 v->cbp[s->mb_x] = block_cbp;
1830 37920 v->ttblk[s->mb_x] = block_tt;
1831
1832 37920 return 0;
1833 }
1834
1835 /** Decode one B-frame MB (in Main profile)
1836 */
1837 20940 static int vc1_decode_b_mb(VC1Context *v)
1838 {
1839 20940 MpegEncContext *s = &v->s;
1840 20940 GetBitContext *gb = &s->gb;
1841 int i, j;
1842 20940 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1843 20940 int cbp = 0; /* cbp decoding stuff */
1844 int mqdiff, mquant; /* MB quantization */
1845 20940 int ttmb = v->ttfrm; /* MB Transform type */
1846 20940 int mb_has_coeffs = 0; /* last_flag */
1847 int index, index1; /* LUT indexes */
1848 int val, sign; /* temp values */
1849 20940 int first_block = 1;
1850 int dst_idx, off;
1851 int skipped, direct;
1852 int dmv_x[2], dmv_y[2];
1853 20940 int bmvtype = BMV_TYPE_BACKWARD;
1854 int ret;
1855
1856 20940 mquant = v->pq; /* lossy initialization */
1857 20940 s->mb_intra = 0;
1858
1859
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 20940 if (v->dmb_is_raw)
1860 ✗ direct = get_bits1(gb);
1861 else
1862 20940 direct = v->direct_mb_plane[mb_pos];
1863
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 20940 if (v->skip_is_raw)
1864 ✗ skipped = get_bits1(gb);
1865 else
1866 20940 skipped = v->s.mbskip_table[mb_pos];
1867
1868 20940 dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
1869
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 146580 for (i = 0; i < 6; i++) {
1870 125640 v->mb_type[0][s->block_index[i]] = 0;
1871 125640 s->dc_val[0][s->block_index[i]] = 0;
1872 }
1873 20940 s->cur_pic.qscale_table[mb_pos] = 0;
1874
1875
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 20940 if (!direct) {
1876
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 18371 if (!skipped) {
1877
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 15906 GET_MVDATA(dmv_x[0], dmv_y[0]);
1878 15906 dmv_x[1] = dmv_x[0];
1879 15906 dmv_y[1] = dmv_y[0];
1880 }
1881
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 18371 if (skipped || !s->mb_intra) {
1882 18201 bmvtype = decode012(gb);
1883
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 18201 switch (bmvtype) {
1884 8021 case 0:
1885 8021 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
1886 8021 break;
1887 4023 case 1:
1888 4023 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
1889 4023 break;
1890 6157 case 2:
1891 6157 bmvtype = BMV_TYPE_INTERPOLATED;
1892 6157 dmv_x[0] = dmv_y[0] = 0;
1893 }
1894 }
1895 }
1896
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 146580 for (i = 0; i < 6; i++)
1897 125640 v->mb_type[0][s->block_index[i]] = s->mb_intra;
1898
1899
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 20940 if (skipped) {
1900
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 3578 if (direct)
1901 1113 bmvtype = BMV_TYPE_INTERPOLATED;
1902 3578 ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
1903 3578 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
1904 3578 return 0;
1905 }
1906
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 17362 if (direct) {
1907 1456 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
1908
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 1456 GET_MQUANT();
1909 1456 s->mb_intra = 0;
1910 1456 s->cur_pic.qscale_table[mb_pos] = mquant;
1911
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 1456 if (!v->ttmbf)
1912 1456 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
1913 1456 dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
1914 1456 ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
1915 1456 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
1916 } else {
1917
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 15906 if (!mb_has_coeffs && !s->mb_intra) {
1918 /* no coded blocks - effectively skipped */
1919 1035 ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
1920 1035 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
1921 1035 return 0;
1922 }
1923
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 14871 if (s->mb_intra && !mb_has_coeffs) {
1924 ✗ GET_MQUANT();
1925 ✗ s->cur_pic.qscale_table[mb_pos] = mquant;
1926 ✗ s->ac_pred = get_bits1(gb);
1927 ✗ cbp = 0;
1928 ✗ ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
1929 } else {
1930
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 14871 if (bmvtype == BMV_TYPE_INTERPOLATED) {
1931
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 5289 GET_MVDATA(dmv_x[0], dmv_y[0]);
1932
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 5289 if (!mb_has_coeffs) {
1933 /* interpolated skipped block */
1934 475 ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
1935 475 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
1936 475 return 0;
1937 }
1938 }
1939 14396 ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
1940
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 14396 if (!s->mb_intra) {
1941 14226 vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
1942 }
1943
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 14396 if (s->mb_intra)
1944 170 s->ac_pred = get_bits1(gb);
1945 14396 cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
1946
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 14396 GET_MQUANT();
1947 14396 s->cur_pic.qscale_table[mb_pos] = mquant;
1948
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 14396 if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
1949 14226 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
1950 }
1951 }
1952 15852 dst_idx = 0;
1953
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 110964 for (i = 0; i < 6; i++) {
1954 95112 s->dc_val[0][s->block_index[i]] = 0;
1955 95112 dst_idx += i >> 2;
1956 95112 val = ((cbp >> (5 - i)) & 1);
1957
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 95112 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
1958 95112 v->mb_type[0][s->block_index[i]] = s->mb_intra;
1959
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 95112 if (s->mb_intra) {
1960 /* check if prediction blocks A and C are available */
1961 1020 v->a_avail = v->c_avail = 0;
1962
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 1020 if (i == 2 || i == 3 || !s->first_slice_line)
1963 996 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
1964
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 1020 if (i == 1 || i == 3 || s->mb_x)
1965 992 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
1966
1967 1020 ret = vc1_decode_intra_block(v, s->block[i], i, val, mquant,
1968
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 1020 (i & 4) ? v->codingset2 : v->codingset);
1969
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 1020 if (ret < 0)
1970 ✗ return ret;
1971 if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
1972 continue;
1973 1020 v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
1974
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 1020 if (v->rangeredfrm)
1975 ✗ for (j = 0; j < 64; j++)
1976 ✗ s->block[i][j] *= 2;
1977 1020 s->idsp.put_signed_pixels_clamped(s->block[i],
1978 1020 s->dest[dst_idx] + off,
1979
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 1020 i & 4 ? s->uvlinesize
1980 : s->linesize);
1981
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 94092 } else if (val) {
1982 172395 int pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
1983 57465 first_block, s->dest[dst_idx] + off,
1984
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 57465 (i & 4) ? s->uvlinesize : s->linesize,
1985 CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), NULL);
1986
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 57465 if (pat < 0)
1987 ✗ return pat;
1988
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 57465 if (!v->ttmbf && ttmb < 8)
1989 54531 ttmb = -1;
1990 57465 first_block = 0;
1991 }
1992 }
1993 15852 return 0;
1994 }
1995
1996 /** Decode one B-frame MB (in interlaced field B picture)
1997 */
1998 51540 static int vc1_decode_b_mb_intfi(VC1Context *v)
1999 {
2000 51540 MpegEncContext *s = &v->s;
2001 51540 GetBitContext *gb = &s->gb;
2002 int i, j;
2003 51540 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2004 51540 int cbp = 0; /* cbp decoding stuff */
2005 int mqdiff, mquant; /* MB quantization */
2006 51540 int ttmb = v->ttfrm; /* MB Transform type */
2007 51540 int mb_has_coeffs = 0; /* last_flag */
2008 int val; /* temp value */
2009 51540 int first_block = 1;
2010 int dst_idx, off;
2011 int fwd;
2012 int dmv_x[2], dmv_y[2], pred_flag[2];
2013 51540 int bmvtype = BMV_TYPE_BACKWARD;
2014 51540 int block_cbp = 0, pat, block_tt = 0;
2015 int idx_mbmode;
2016 int ret;
2017
2018 51540 mquant = v->pq; /* Lossy initialization */
2019 51540 s->mb_intra = 0;
2020
2021 51540 idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_IF_MBMODE_VLC_BITS, 2);
2022
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 51540 if (idx_mbmode <= 1) { // intra MB
2023 48 v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1.
2024 48 s->mb_intra = 1;
2025 48 s->cur_pic.motion_val[1][s->block_index[0]][0] = 0;
2026 48 s->cur_pic.motion_val[1][s->block_index[0]][1] = 0;
2027 48 s->cur_pic.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA;
2028
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 48 GET_MQUANT();
2029 48 s->cur_pic.qscale_table[mb_pos] = mquant;
2030 /* Set DC scale - y and c use the same so we only set y */
2031 48 s->y_dc_scale = ff_wmv3_dc_scale_table[FFABS(mquant)];
2032 48 v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
2033 48 mb_has_coeffs = idx_mbmode & 1;
2034
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 48 if (mb_has_coeffs)
2035 33 cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_ICBPCY_VLC_BITS, 2);
2036 48 dst_idx = 0;
2037
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 336 for (i = 0; i < 6; i++) {
2038 288 v->a_avail = v->c_avail = 0;
2039 288 v->mb_type[0][s->block_index[i]] = 1;
2040 288 s->dc_val[0][s->block_index[i]] = 0;
2041 288 dst_idx += i >> 2;
2042 288 val = ((cbp >> (5 - i)) & 1);
2043
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 288 if (i == 2 || i == 3 || !s->first_slice_line)
2044 288 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
2045
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 288 if (i == 1 || i == 3 || s->mb_x)
2046 284 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
2047
2048 288 ret = vc1_decode_intra_block(v, s->block[i], i, val, mquant,
2049
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 288 (i & 4) ? v->codingset2 : v->codingset);
2050
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 288 if (ret < 0)
2051 ✗ return ret;
2052 if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
2053 continue;
2054 288 v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
2055
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 288 if (v->rangeredfrm)
2056 ✗ for (j = 0; j < 64; j++)
2057 ✗ s->block[i][j] <<= 1;
2058
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 288 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
2059 288 s->idsp.put_signed_pixels_clamped(s->block[i],
2060 288 s->dest[dst_idx] + off,
2061
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 288 (i & 4) ? s->uvlinesize
2062 : s->linesize);
2063 }
2064 } else {
2065 51492 s->mb_intra = v->is_intra[s->mb_x] = 0;
2066 51492 s->cur_pic.mb_type[mb_pos + v->mb_off] = MB_TYPE_16x16;
2067
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 360444 for (i = 0; i < 6; i++)
2068 308952 v->mb_type[0][s->block_index[i]] = 0;
2069
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 51492 if (v->fmb_is_raw)
2070 675 fwd = v->forward_mb_plane[mb_pos] = get_bits1(gb);
2071 else
2072 50817 fwd = v->forward_mb_plane[mb_pos];
2073
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 51492 if (idx_mbmode <= 5) { // 1-MV
2074 42084 int interpmvp = 0;
2075 42084 dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
2076 42084 pred_flag[0] = pred_flag[1] = 0;
2077
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 42084 if (fwd)
2078 15503 bmvtype = BMV_TYPE_FORWARD;
2079 else {
2080 26581 bmvtype = decode012(gb);
2081
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 26581 switch (bmvtype) {
2082 13925 case 0:
2083 13925 bmvtype = BMV_TYPE_BACKWARD;
2084 13925 break;
2085 6770 case 1:
2086 6770 bmvtype = BMV_TYPE_DIRECT;
2087 6770 break;
2088 5886 case 2:
2089 5886 bmvtype = BMV_TYPE_INTERPOLATED;
2090 5886 interpmvp = get_bits1(gb);
2091 }
2092 }
2093 42084 v->bmvtype = bmvtype;
2094
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 42084 if (bmvtype != BMV_TYPE_DIRECT && idx_mbmode & 1) {
2095 20242 get_mvdata_interlaced(v, &dmv_x[bmvtype == BMV_TYPE_BACKWARD], &dmv_y[bmvtype == BMV_TYPE_BACKWARD], &pred_flag[bmvtype == BMV_TYPE_BACKWARD]);
2096 }
2097
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 42084 if (interpmvp) {
2098 4685 get_mvdata_interlaced(v, &dmv_x[1], &dmv_y[1], &pred_flag[1]);
2099 }
2100
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 42084 if (bmvtype == BMV_TYPE_DIRECT) {
2101 6770 dmv_x[0] = dmv_y[0] = pred_flag[0] = 0;
2102 6770 dmv_x[1] = dmv_y[1] = pred_flag[0] = 0;
2103
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 6770 if (!s->next_pic.ptr->field_picture) {
2104 ✗ av_log(s->avctx, AV_LOG_ERROR, "Mixed field/frame direct mode not supported\n");
2105 ✗ return AVERROR_INVALIDDATA;
2106 }
2107 }
2108 42084 ff_vc1_pred_b_mv_intfi(v, 0, dmv_x, dmv_y, 1, pred_flag);
2109 42084 vc1_b_mc(v, dmv_x, dmv_y, (bmvtype == BMV_TYPE_DIRECT), bmvtype);
2110 42084 mb_has_coeffs = !(idx_mbmode & 2);
2111 } else { // 4-MV
2112
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 9408 if (fwd)
2113 4892 bmvtype = BMV_TYPE_FORWARD;
2114 9408 v->bmvtype = bmvtype;
2115 9408 v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
2116
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 47040 for (i = 0; i < 4; i++) {
2117 37632 dmv_x[0] = dmv_y[0] = pred_flag[0] = 0;
2118 37632 dmv_x[1] = dmv_y[1] = pred_flag[1] = 0;
2119
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 37632 if (v->fourmvbp & (8 >> i)) {
2120 10050 get_mvdata_interlaced(v, &dmv_x[bmvtype == BMV_TYPE_BACKWARD],
2121 10050 &dmv_y[bmvtype == BMV_TYPE_BACKWARD],
2122 10050 &pred_flag[bmvtype == BMV_TYPE_BACKWARD]);
2123 }
2124 37632 ff_vc1_pred_b_mv_intfi(v, i, dmv_x, dmv_y, 0, pred_flag);
2125 37632 ff_vc1_mc_4mv_luma(v, i, bmvtype == BMV_TYPE_BACKWARD, 0);
2126 }
2127 9408 ff_vc1_mc_4mv_chroma(v, bmvtype == BMV_TYPE_BACKWARD);
2128 9408 mb_has_coeffs = idx_mbmode & 1;
2129 }
2130
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 51492 if (mb_has_coeffs)
2131 30972 cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
2132
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 51492 if (cbp) {
2133
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 30972 GET_MQUANT();
2134 }
2135 51492 s->cur_pic.qscale_table[mb_pos] = mquant;
2136
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 51492 if (!v->ttmbf && cbp) {
2137 30972 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
2138 }
2139 51492 dst_idx = 0;
2140
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 360444 for (i = 0; i < 6; i++) {
2141 308952 s->dc_val[0][s->block_index[i]] = 0;
2142 308952 dst_idx += i >> 2;
2143 308952 val = ((cbp >> (5 - i)) & 1);
2144
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 308952 off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize;
2145
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 308952 if (val) {
2146 274410 pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
2147 91470 first_block, s->dest[dst_idx] + off,
2148
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 91470 (i & 4) ? s->uvlinesize : s->linesize,
2149 CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), &block_tt);
2150
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 91470 if (pat < 0)
2151 ✗ return pat;
2152 91470 block_cbp |= pat << (i << 2);
2153
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 91470 if (!v->ttmbf && ttmb < 8)
2154 69969 ttmb = -1;
2155 91470 first_block = 0;
2156 }
2157 }
2158 }
2159 51540 v->cbp[s->mb_x] = block_cbp;
2160 51540 v->ttblk[s->mb_x] = block_tt;
2161
2162 51540 return 0;
2163 }
2164
2165 /** Decode one B-frame MB (in interlaced frame B picture)
2166 */
2167 32640 static int vc1_decode_b_mb_intfr(VC1Context *v)
2168 {
2169 32640 MpegEncContext *s = &v->s;
2170 32640 GetBitContext *gb = &s->gb;
2171 int i, j;
2172 32640 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2173 32640 int cbp = 0; /* cbp decoding stuff */
2174 int mqdiff, mquant; /* MB quantization */
2175 32640 int ttmb = v->ttfrm; /* MB Transform type */
2176 32640 int mvsw = 0; /* motion vector switch */
2177 32640 int mb_has_coeffs = 1; /* last_flag */
2178 int dmv_x, dmv_y; /* Differential MV components */
2179 int val; /* temp value */
2180 32640 int first_block = 1;
2181 int dst_idx, off;
2182 32640 int skipped, direct, twomv = 0;
2183 32640 int block_cbp = 0, pat, block_tt = 0;
2184 32640 int idx_mbmode = 0, mvbp;
2185 int stride_y, fieldtx;
2186 32640 int bmvtype = BMV_TYPE_BACKWARD;
2187 int dir, dir2;
2188 int ret;
2189
2190 32640 mquant = v->pq; /* Lossy initialization */
2191 32640 s->mb_intra = 0;
2192
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 32640 if (v->skip_is_raw)
2193 ✗ skipped = get_bits1(gb);
2194 else
2195 32640 skipped = v->s.mbskip_table[mb_pos];
2196
2197
2/2
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 32640 if (!skipped) {
2198 31098 idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2);
2199
2/2
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 31098 if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) {
2200 17446 twomv = 1;
2201 17446 v->blk_mv_type[s->block_index[0]] = 1;
2202 17446 v->blk_mv_type[s->block_index[1]] = 1;
2203 17446 v->blk_mv_type[s->block_index[2]] = 1;
2204 17446 v->blk_mv_type[s->block_index[3]] = 1;
2205 } else {
2206 13652 v->blk_mv_type[s->block_index[0]] = 0;
2207 13652 v->blk_mv_type[s->block_index[1]] = 0;
2208 13652 v->blk_mv_type[s->block_index[2]] = 0;
2209 13652 v->blk_mv_type[s->block_index[3]] = 0;
2210 }
2211 }
2212
2213
2/2
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 32640 if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_INTRA) { // intra MB
2214
2/2
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 505 for (i = 0; i < 4; i++) {
2215 404 s->mv[0][i][0] = s->cur_pic.motion_val[0][s->block_index[i]][0] = 0;
2216 404 s->mv[0][i][1] = s->cur_pic.motion_val[0][s->block_index[i]][1] = 0;
2217 404 s->mv[1][i][0] = s->cur_pic.motion_val[1][s->block_index[i]][0] = 0;
2218 404 s->mv[1][i][1] = s->cur_pic.motion_val[1][s->block_index[i]][1] = 0;
2219 }
2220 101 v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1.
2221 101 s->mb_intra = 1;
2222 101 s->cur_pic.mb_type[mb_pos] = MB_TYPE_INTRA;
2223 101 fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb);
2224 101 mb_has_coeffs = get_bits1(gb);
2225
1/2
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 101 if (mb_has_coeffs)
2226 101 cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
2227 101 v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
2228
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 101 GET_MQUANT();
2229 101 s->cur_pic.qscale_table[mb_pos] = mquant;
2230 /* Set DC scale - y and c use the same so we only set y */
2231 101 s->y_dc_scale = ff_wmv3_dc_scale_table[FFABS(mquant)];
2232 101 dst_idx = 0;
2233
2/2
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 707 for (i = 0; i < 6; i++) {
2234 606 v->a_avail = v->c_avail = 0;
2235 606 v->mb_type[0][s->block_index[i]] = 1;
2236 606 s->dc_val[0][s->block_index[i]] = 0;
2237 606 dst_idx += i >> 2;
2238 606 val = ((cbp >> (5 - i)) & 1);
2239
6/6
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 606 if (i == 2 || i == 3 || !s->first_slice_line)
2240 574 v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
2241
6/6
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 606 if (i == 1 || i == 3 || s->mb_x)
2242 594 v->c_avail = v->mb_type[0][s->block_index[i] - 1];
2243
2244 606 ret = vc1_decode_intra_block(v, s->block[i], i, val, mquant,
2245
2/2
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 606 (i & 4) ? v->codingset2 : v->codingset);
2246
1/2
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 606 if (ret < 0)
2247 ✗ return ret;
2248 if (CONFIG_GRAY && i > 3 && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
2249 continue;
2250 606 v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
2251
2/2
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 606 if (i < 4) {
2252 404 stride_y = s->linesize << fieldtx;
2253
2/2
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 404 off = (fieldtx) ? ((i & 1) * 8) + ((i & 2) >> 1) * s->linesize : (i & 1) * 8 + 4 * (i & 2) * s->linesize;
2254 } else {
2255 202 stride_y = s->uvlinesize;
2256 202 off = 0;
2257 }
2258 606 s->idsp.put_signed_pixels_clamped(s->block[i],
2259 606 s->dest[dst_idx] + off,
2260 stride_y);
2261 }
2262 } else {
2263 32539 s->mb_intra = v->is_intra[s->mb_x] = 0;
2264
2265
1/2
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 32539 if (v->dmb_is_raw)
2266 ✗ direct = get_bits1(gb);
2267 else
2268 32539 direct = v->direct_mb_plane[mb_pos];
2269
2270
2/2
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 32539 if (direct) {
2271
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 8474 if (s->next_pic.ptr->field_picture)
2272 ✗ av_log(s->avctx, AV_LOG_WARNING, "Mixed frame/field direct mode not supported\n");
2273 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);
2274 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);
2275 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);
2276 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);
2277
2278
2/2
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 8474 if (twomv) {
2279 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);
2280 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);
2281 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);
2282 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);
2283
2284
2/2
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 13080 for (i = 1; i < 4; i += 2) {
2285 8720 s->mv[0][i][0] = s->cur_pic.motion_val[0][s->block_index[i]][0] = s->mv[0][i-1][0];
2286 8720 s->mv[0][i][1] = s->cur_pic.motion_val[0][s->block_index[i]][1] = s->mv[0][i-1][1];
2287 8720 s->mv[1][i][0] = s->cur_pic.motion_val[1][s->block_index[i]][0] = s->mv[1][i-1][0];
2288 8720 s->mv[1][i][1] = s->cur_pic.motion_val[1][s->block_index[i]][1] = s->mv[1][i-1][1];
2289 }
2290 } else {
2291
2/2
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 16456 for (i = 1; i < 4; i++) {
2292 12342 s->mv[0][i][0] = s->cur_pic.motion_val[0][s->block_index[i]][0] = s->mv[0][0][0];
2293 12342 s->mv[0][i][1] = s->cur_pic.motion_val[0][s->block_index[i]][1] = s->mv[0][0][1];
2294 12342 s->mv[1][i][0] = s->cur_pic.motion_val[1][s->block_index[i]][0] = s->mv[1][0][0];
2295 12342 s->mv[1][i][1] = s->cur_pic.motion_val[1][s->block_index[i]][1] = s->mv[1][0][1];
2296 }
2297 }
2298 }
2299
2300
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 32539 if (!direct) {
2301
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 24065 if (skipped || !s->mb_intra) {
2302 24065 bmvtype = decode012(gb);
2303
3/4
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 24065 switch (bmvtype) {
2304 14341 case 0:
2305 14341 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
2306 14341 break;
2307 6232 case 1:
2308 6232 bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
2309 6232 break;
2310 3492 case 2:
2311 3492 bmvtype = BMV_TYPE_INTERPOLATED;
2312 }
2313 }
2314
2315
4/4
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 24065 if (twomv && bmvtype != BMV_TYPE_INTERPOLATED)
2316 12364 mvsw = get_bits1(gb);
2317 }
2318
2319
2/2
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 32539 if (!skipped) { // inter MB
2320 30997 mb_has_coeffs = ff_vc1_mbmode_intfrp[0][idx_mbmode][3];
2321
2/2
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 30997 if (mb_has_coeffs)
2322 26859 cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
2323
2/2
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 30997 if (!direct) {
2324
4/4
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✓ Branch 1 taken 20367 times.
✓ Branch 2 taken 722 times.
✓ Branch 3 taken 2761 times.
 23850 if (bmvtype == BMV_TYPE_INTERPOLATED && twomv) {
2325 722 v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
2326
4/4
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✓ Branch 1 taken 2761 times.
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✓ Branch 3 taken 8003 times.
 23128 } else if (bmvtype == BMV_TYPE_INTERPOLATED || twomv) {
2327 15125 v->twomvbp = get_vlc2(gb, v->twomvbp_vlc, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1);
2328 }
2329 }
2330
2331
2/2
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 216979 for (i = 0; i < 6; i++)
2332 185982 v->mb_type[0][s->block_index[i]] = 0;
2333 30997 fieldtx = v->fieldtx_plane[mb_pos] = ff_vc1_mbmode_intfrp[0][idx_mbmode][1];
2334 /* for all motion vector read MVDATA and motion compensate each block */
2335 30997 dst_idx = 0;
2336
2/2
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 30997 if (direct) {
2337
2/2
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 7147 if (twomv) {
2338
2/2
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 21800 for (i = 0; i < 4; i++) {
2339 17440 ff_vc1_mc_4mv_luma(v, i, 0, 0);
2340 17440 ff_vc1_mc_4mv_luma(v, i, 1, 1);
2341 }
2342 4360 ff_vc1_mc_4mv_chroma4(v, 0, 0, 0);
2343 4360 ff_vc1_mc_4mv_chroma4(v, 1, 1, 1);
2344 } else {
2345 2787 ff_vc1_mc_1mv(v, 0);
2346 2787 ff_vc1_interp_mc(v);
2347 }
2348
4/4
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 23850 } else if (twomv && bmvtype == BMV_TYPE_INTERPOLATED) {
2349 722 mvbp = v->fourmvbp;
2350
2/2
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 3610 for (i = 0; i < 4; i++) {
2351
4/4
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✓ Branch 3 taken 1444 times.
 2888 dir = i==1 || i==3;
2352 2888 dmv_x = dmv_y = 0;
2353 2888 val = ((mvbp >> (3 - i)) & 1);
2354
2/2
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 2888 if (val)
2355 2477 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
2356
2/2
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 2888 j = i > 1 ? 2 : 0;
2357 2888 ff_vc1_pred_mv_intfr(v, j, dmv_x, dmv_y, 2, v->range_x, v->range_y, dir);
2358 2888 ff_vc1_mc_4mv_luma(v, j, dir, dir);
2359 2888 ff_vc1_mc_4mv_luma(v, j+1, dir, dir);
2360 }
2361
2362 722 ff_vc1_mc_4mv_chroma4(v, 0, 0, 0);
2363 722 ff_vc1_mc_4mv_chroma4(v, 1, 1, 1);
2364
2/2
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 23128 } else if (bmvtype == BMV_TYPE_INTERPOLATED) {
2365 2761 mvbp = v->twomvbp;
2366 2761 dmv_x = dmv_y = 0;
2367
2/2
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✓ Branch 1 taken 70 times.
 2761 if (mvbp & 2)
2368 2691 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
2369
2370 2761 ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, 0);
2371 2761 ff_vc1_mc_1mv(v, 0);
2372
2373 2761 dmv_x = dmv_y = 0;
2374
2/2
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✓ Branch 1 taken 113 times.
 2761 if (mvbp & 1)
2375 2648 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
2376
2377 2761 ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, 1);
2378 2761 ff_vc1_interp_mc(v);
2379
2/2
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✓ Branch 1 taken 8003 times.
 20367 } else if (twomv) {
2380 12364 dir = bmvtype == BMV_TYPE_BACKWARD;
2381 12364 dir2 = dir;
2382
2/2
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✓ Branch 1 taken 6511 times.
 12364 if (mvsw)
2383 5853 dir2 = !dir;
2384 12364 mvbp = v->twomvbp;
2385 12364 dmv_x = dmv_y = 0;
2386
2/2
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✓ Branch 1 taken 1737 times.
 12364 if (mvbp & 2)
2387 10627 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
2388 12364 ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 2, v->range_x, v->range_y, dir);
2389
2390 12364 dmv_x = dmv_y = 0;
2391
2/2
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✓ Branch 1 taken 1435 times.
 12364 if (mvbp & 1)
2392 10929 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
2393 12364 ff_vc1_pred_mv_intfr(v, 2, dmv_x, dmv_y, 2, v->range_x, v->range_y, dir2);
2394
2395
2/2
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 12364 if (mvsw) {
2396
2/2
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 17559 for (i = 0; i < 2; i++) {
2397 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];
2398 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];
2399 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];
2400 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];
2401 }
2402 } else {
2403 6511 ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, !dir);
2404 6511 ff_vc1_pred_mv_intfr(v, 2, 0, 0, 2, v->range_x, v->range_y, !dir);
2405 }
2406
2407 12364 ff_vc1_mc_4mv_luma(v, 0, dir, 0);
2408 12364 ff_vc1_mc_4mv_luma(v, 1, dir, 0);
2409 12364 ff_vc1_mc_4mv_luma(v, 2, dir2, 0);
2410 12364 ff_vc1_mc_4mv_luma(v, 3, dir2, 0);
2411 12364 ff_vc1_mc_4mv_chroma4(v, dir, dir2, 0);
2412 } else {
2413 8003 dir = bmvtype == BMV_TYPE_BACKWARD;
2414
2415 8003 mvbp = ff_vc1_mbmode_intfrp[0][idx_mbmode][2];
2416 8003 dmv_x = dmv_y = 0;
2417
2/2
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 8003 if (mvbp)
2418 7691 get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
2419
2420 8003 ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, dir);
2421 8003 v->blk_mv_type[s->block_index[0]] = 1;
2422 8003 v->blk_mv_type[s->block_index[1]] = 1;
2423 8003 v->blk_mv_type[s->block_index[2]] = 1;
2424 8003 v->blk_mv_type[s->block_index[3]] = 1;
2425 8003 ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, !dir);
2426
2/2
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 24009 for (i = 0; i < 2; i++) {
2427 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];
2428 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];
2429 }
2430 8003 ff_vc1_mc_1mv(v, dir);
2431 }
2432
2433
2/2
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 30997 if (cbp)
2434
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 26859 GET_MQUANT(); // p. 227
2435 30997 s->cur_pic.qscale_table[mb_pos] = mquant;
2436
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 30997 if (!v->ttmbf && cbp)
2437 26859 ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
2438
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 216979 for (i = 0; i < 6; i++) {
2439 185982 s->dc_val[0][s->block_index[i]] = 0;
2440 185982 dst_idx += i >> 2;
2441 185982 val = ((cbp >> (5 - i)) & 1);
2442
2/2
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 185982 if (!fieldtx)
2443
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 84336 off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
2444 else
2445
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 101646 off = (i & 4) ? 0 : ((i & 1) * 8 + ((i > 1) * s->linesize));
2446
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 185982 if (val) {
2447 346863 pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
2448 115621 first_block, s->dest[dst_idx] + off,
2449
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 115621 (i & 4) ? s->uvlinesize : (s->linesize << fieldtx),
2450 CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), &block_tt);
2451
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 115621 if (pat < 0)
2452 ✗ return pat;
2453 115621 block_cbp |= pat << (i << 2);
2454
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 115621 if (!v->ttmbf && ttmb < 8)
2455 92324 ttmb = -1;
2456 115621 first_block = 0;
2457 }
2458 }
2459
2460 } else { // skipped
2461 1542 dir = 0;
2462
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 10794 for (i = 0; i < 6; i++) {
2463 9252 v->mb_type[0][s->block_index[i]] = 0;
2464 9252 s->dc_val[0][s->block_index[i]] = 0;
2465 }
2466 1542 s->cur_pic.mb_type[mb_pos] = MB_TYPE_SKIP;
2467 1542 s->cur_pic.qscale_table[mb_pos] = 0;
2468 1542 v->blk_mv_type[s->block_index[0]] = 0;
2469 1542 v->blk_mv_type[s->block_index[1]] = 0;
2470 1542 v->blk_mv_type[s->block_index[2]] = 0;
2471 1542 v->blk_mv_type[s->block_index[3]] = 0;
2472
2473
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 1542 if (!direct) {
2474
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 215 if (bmvtype == BMV_TYPE_INTERPOLATED) {
2475 9 ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, 0);
2476 9 ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, 1);
2477 } else {
2478 206 dir = bmvtype == BMV_TYPE_BACKWARD;
2479 206 ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, dir);
2480
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 206 if (mvsw) {
2481 ✗ int dir2 = dir;
2482 ✗ if (mvsw)
2483 ✗ dir2 = !dir;
2484 ✗ for (i = 0; i < 2; i++) {
2485 ✗ 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];
2486 ✗ 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];
2487 ✗ 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];
2488 ✗ 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];
2489 }
2490 } else {
2491 206 v->blk_mv_type[s->block_index[0]] = 1;
2492 206 v->blk_mv_type[s->block_index[1]] = 1;
2493 206 v->blk_mv_type[s->block_index[2]] = 1;
2494 206 v->blk_mv_type[s->block_index[3]] = 1;
2495 206 ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, !dir);
2496
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 618 for (i = 0; i < 2; i++) {
2497 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];
2498 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];
2499 }
2500 }
2501 }
2502 }
2503
2504 1542 ff_vc1_mc_1mv(v, dir);
2505
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 1542 if (direct || bmvtype == BMV_TYPE_INTERPOLATED) {
2506 1336 ff_vc1_interp_mc(v);
2507 }
2508 1542 v->fieldtx_plane[mb_pos] = 0;
2509 }
2510 }
2511 32640 v->cbp[s->mb_x] = block_cbp;
2512 32640 v->ttblk[s->mb_x] = block_tt;
2513
2514 32640 return 0;
2515 }
2516
2517 /** Decode blocks of I-frame
2518 */
2519 90 static void vc1_decode_i_blocks(VC1Context *v)
2520 {
2521 int k, j;
2522 90 MpegEncContext *s = &v->s;
2523 int cbp, val;
2524 uint8_t *coded_val;
2525 int mb_pos;
2526
2527 /* select coding mode used for VLC tables selection */
2528
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 90 switch (v->y_ac_table_index) {
2529 11 case 0:
2530
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 11 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
2531 11 break;
2532 71 case 1:
2533 71 v->codingset = CS_HIGH_MOT_INTRA;
2534 71 break;
2535 8 case 2:
2536 8 v->codingset = CS_MID_RATE_INTRA;
2537 8 break;
2538 }
2539
2540
3/4
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 90 switch (v->c_ac_table_index) {
2541 84 case 0:
2542
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 84 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
2543 84 break;
2544 5 case 1:
2545 5 v->codingset2 = CS_HIGH_MOT_INTER;
2546 5 break;
2547 1 case 2:
2548 1 v->codingset2 = CS_MID_RATE_INTER;
2549 1 break;
2550 }
2551
2552 /* Set DC scale - y and c use the same so we only set y */
2553 90 s->y_dc_scale = ff_wmv3_dc_scale_table[v->pq];
2554
2555 //do frame decode
2556 90 s->mb_x = s->mb_y = 0;
2557 90 s->mb_intra = 1;
2558 90 s->first_slice_line = 1;
2559
2/2
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 1104 for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
2560 1014 s->mb_x = 0;
2561 1014 init_block_index(v);
2562
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 20114 for (; s->mb_x < v->end_mb_x; s->mb_x++) {
2563 19100 update_block_index(s);
2564 19100 s->bdsp.clear_blocks(v->block[v->cur_blk_idx][0]);
2565 19100 mb_pos = s->mb_x + s->mb_y * s->mb_width;
2566 19100 s->cur_pic.mb_type[mb_pos] = MB_TYPE_INTRA;
2567 19100 s->cur_pic.qscale_table[mb_pos] = v->pq;
2568
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 95500 for (int i = 0; i < 4; i++) {
2569 76400 s->cur_pic.motion_val[1][s->block_index[i]][0] = 0;
2570 76400 s->cur_pic.motion_val[1][s->block_index[i]][1] = 0;
2571 }
2572
2573 // do actual MB decoding and displaying
2574 19100 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc,
2575 MSMP4_MB_INTRA_VLC_BITS, 2);
2576 19100 v->s.ac_pred = get_bits1(&v->s.gb);
2577
2578
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 133700 for (k = 0; k < 6; k++) {
2579 114600 v->mb_type[0][s->block_index[k]] = 1;
2580
2581 114600 val = ((cbp >> (5 - k)) & 1);
2582
2583
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 114600 if (k < 4) {
2584 76400 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
2585 76400 val = val ^ pred;
2586 76400 *coded_val = val;
2587 }
2588 114600 cbp |= val << (5 - k);
2589
2590
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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);
2591
2592 if (CONFIG_GRAY && k > 3 && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
2593 continue;
2594 114600 v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[k]]);
2595 }
2596
2597
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 19100 if (v->overlap && v->pq >= 9) {
2598 ✗ ff_vc1_i_overlap_filter(v);
2599 ✗ if (v->rangeredfrm)
2600 ✗ for (k = 0; k < 6; k++)
2601 ✗ for (j = 0; j < 64; j++)
2602 ✗ v->block[v->cur_blk_idx][block_map[k]][j] *= 2;
2603 ✗ vc1_put_blocks_clamped(v, 1);
2604 } else {
2605
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 19100 if (v->rangeredfrm)
2606
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 30240 for (k = 0; k < 6; k++)
2607
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 1684800 for (j = 0; j < 64; j++)
2608 1658880 v->block[v->cur_blk_idx][block_map[k]][j] = (v->block[v->cur_blk_idx][block_map[k]][j] - 64) * 2;
2609 19100 vc1_put_blocks_clamped(v, 0);
2610 }
2611
2612
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 19100 if (v->s.loop_filter)
2613 13160 ff_vc1_i_loop_filter(v);
2614
2615
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 19100 if (get_bits_left(&s->gb) < 0) {
2616 ✗ ff_er_add_slice(&s->er, 0, 0, s->mb_x, s->mb_y, ER_MB_ERROR);
2617 ✗ av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n",
2618 ✗ get_bits_count(&s->gb), s->gb.size_in_bits);
2619 ✗ return;
2620 }
2621
2622 19100 v->topleft_blk_idx = (v->topleft_blk_idx + 1) % (v->end_mb_x + 2);
2623 19100 v->top_blk_idx = (v->top_blk_idx + 1) % (v->end_mb_x + 2);
2624 19100 v->left_blk_idx = (v->left_blk_idx + 1) % (v->end_mb_x + 2);
2625 19100 v->cur_blk_idx = (v->cur_blk_idx + 1) % (v->end_mb_x + 2);
2626 }
2627
2628 1014 s->first_slice_line = 0;
2629 }
2630
2631 /* This is intentionally mb_height and not end_mb_y - unlike in advanced
2632 * profile, these only differ are when decoding MSS2 rectangles. */
2633 90 ff_er_add_slice(&s->er, 0, 0, s->mb_width - 1, s->mb_height - 1, ER_MB_END);
2634 }
2635
2636 /** Decode blocks of I-frame for advanced profile
2637 */
2638 28 static int vc1_decode_i_blocks_adv(VC1Context *v)
2639 {
2640 int k;
2641 28 MpegEncContext *s = &v->s;
2642 int cbp, val;
2643 uint8_t *coded_val;
2644 int mb_pos;
2645 int mquant;
2646 int mqdiff;
2647 28 GetBitContext *gb = &s->gb;
2648
2649
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 28 if (get_bits_left(gb) <= 1)
2650 ✗ return AVERROR_INVALIDDATA;
2651
2652 /* select coding mode used for VLC tables selection */
2653
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 28 switch (v->y_ac_table_index) {
2654 2 case 0:
2655
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 2 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
2656 2 break;
2657 5 case 1:
2658 5 v->codingset = CS_HIGH_MOT_INTRA;
2659 5 break;
2660 21 case 2:
2661 21 v->codingset = CS_MID_RATE_INTRA;
2662 21 break;
2663 }
2664
2665
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 28 switch (v->c_ac_table_index) {
2666 23 case 0:
2667
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 23 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
2668 23 break;
2669 ✗ case 1:
2670 ✗ v->codingset2 = CS_HIGH_MOT_INTER;
2671 ✗ break;
2672 5 case 2:
2673 5 v->codingset2 = CS_MID_RATE_INTER;
2674 5 break;
2675 }
2676
2677 // do frame decode
2678 28 s->mb_intra = 1;
2679 28 s->first_slice_line = 1;
2680 28 s->mb_x = 0;
2681 28 s->mb_y = s->start_mb_y;
2682
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 28 if (s->start_mb_y) {
2683 12 memset(&s->coded_block[(2 * s->mb_y - 1) * s->b8_stride - 2], 0,
2684 12 (1 + s->b8_stride) * sizeof(*s->coded_block));
2685 }
2686
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 390 for (; s->mb_y < s->end_mb_y; s->mb_y++) {
2687 362 s->mb_x = 0;
2688 362 init_block_index(v);
2689
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 24590 for (;s->mb_x < s->mb_width; s->mb_x++) {
2690 24228 mquant = v->pq;
2691 24228 update_block_index(s);
2692 24228 s->bdsp.clear_blocks(v->block[v->cur_blk_idx][0]);
2693 24228 mb_pos = s->mb_x + s->mb_y * s->mb_stride;
2694 24228 s->cur_pic.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA;
2695
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 121140 for (int i = 0; i < 4; i++) {
2696 96912 s->cur_pic.motion_val[1][s->block_index[i] + v->blocks_off][0] = 0;
2697 96912 s->cur_pic.motion_val[1][s->block_index[i] + v->blocks_off][1] = 0;
2698 }
2699
2700 // do actual MB decoding and displaying
2701
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 24228 if (v->fieldtx_is_raw)
2702 ✗ v->fieldtx_plane[mb_pos] = get_bits1(&v->s.gb);
2703
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 24228 if (get_bits_left(&v->s.gb) <= 1) {
2704 ✗ ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
2705 ✗ return 0;
2706 }
2707
2708 24228 cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc,
2709 MSMP4_MB_INTRA_VLC_BITS, 2);
2710
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 24228 if (v->acpred_is_raw)
2711 5340 v->s.ac_pred = get_bits1(&v->s.gb);
2712 else
2713 18888 v->s.ac_pred = v->acpred_plane[mb_pos];
2714
2715
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 24228 if (v->condover == CONDOVER_SELECT && v->overflg_is_raw)
2716 ✗ v->over_flags_plane[mb_pos] = get_bits1(&v->s.gb);
2717
2718
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 24228 GET_MQUANT();
2719
2720 24228 s->cur_pic.qscale_table[mb_pos] = mquant;
2721 /* Set DC scale - y and c use the same so we only set y */
2722 24228 s->y_dc_scale = ff_wmv3_dc_scale_table[FFABS(mquant)];
2723
2724
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 169596 for (k = 0; k < 6; k++) {
2725 145368 v->mb_type[0][s->block_index[k]] = 1;
2726
2727 145368 val = ((cbp >> (5 - k)) & 1);
2728
2729
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 145368 if (k < 4) {
2730 96912 int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
2731 96912 val = val ^ pred;
2732 96912 *coded_val = val;
2733 }
2734 145368 cbp |= val << (5 - k);
2735
2736
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 145368 v->a_avail = !s->first_slice_line || (k == 2 || k == 3);
2737
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 145368 v->c_avail = !!s->mb_x || (k == 1 || k == 3);
2738
2739
2/2
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 145368 vc1_decode_i_block_adv(v, v->block[v->cur_blk_idx][block_map[k]], k, val,
2740 (k < 4) ? v->codingset : v->codingset2, mquant);
2741
2742 if (CONFIG_GRAY && k > 3 && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
2743 continue;
2744 145368 v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[k]]);
2745 }
2746
2747
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 24228 if (v->overlap && (v->pq >= 9 || v->condover != CONDOVER_NONE))
2748 798 ff_vc1_i_overlap_filter(v);
2749 24228 vc1_put_blocks_clamped(v, 1);
2750
2/2
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 24228 if (v->s.loop_filter)
2751 23628 ff_vc1_i_loop_filter(v);
2752
2753
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 24228 if (get_bits_left(&s->gb) < 0) {
2754 // TODO: may need modification to handle slice coding
2755 ✗ ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
2756 ✗ av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n",
2757 ✗ get_bits_count(&s->gb), s->gb.size_in_bits);
2758 ✗ return 0;
2759 }
2760
2/2
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 24228 inc_blk_idx(v->topleft_blk_idx);
2761
2/2
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 24228 inc_blk_idx(v->top_blk_idx);
2762
2/2
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 24228 inc_blk_idx(v->left_blk_idx);
2763
2/2
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✓ Branch 1 taken 23900 times.
 24228 inc_blk_idx(v->cur_blk_idx);
2764 }
2765 362 s->first_slice_line = 0;
2766 }
2767
2768 28 ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
2769 28 (s->end_mb_y << v->field_mode) - 1, ER_MB_END);
2770 28 return 0;
2771 }
2772
2773 917 static void vc1_decode_p_blocks(VC1Context *v)
2774 {
2775 917 MpegEncContext *s = &v->s;
2776 int apply_loop_filter;
2777 int ret;
2778
2779 /* select coding mode used for VLC tables selection */
2780
3/4
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 917 switch (v->c_ac_table_index) {
2781 270 case 0:
2782
2/2
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 270 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
2783 270 break;
2784 391 case 1:
2785 391 v->codingset = CS_HIGH_MOT_INTRA;
2786 391 break;
2787 256 case 2:
2788 256 v->codingset = CS_MID_RATE_INTRA;
2789 256 break;
2790 }
2791
2792
3/4
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 917 switch (v->c_ac_table_index) {
2793 270 case 0:
2794
2/2
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 270 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
2795 270 break;
2796 391 case 1:
2797 391 v->codingset2 = CS_HIGH_MOT_INTER;
2798 391 break;
2799 256 case 2:
2800 256 v->codingset2 = CS_MID_RATE_INTER;
2801 256 break;
2802 }
2803
2804
3/4
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✗ Branch 3 not taken.
 917 apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY);
2805 917 s->first_slice_line = 1;
2806 917 memset(v->cbp_base, 0, sizeof(v->cbp_base[0]) * 3 * s->mb_stride);
2807
2/2
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✓ Branch 1 taken 916 times.
 6295 for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
2808 5379 s->mb_x = 0;
2809 5379 init_block_index(v);
2810
2/2
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✓ Branch 1 taken 5378 times.
 212226 for (; s->mb_x < s->mb_width; s->mb_x++) {
2811 206848 update_block_index(s);
2812
2813
7/8
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✓ Branch 2 taken 152608 times.
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✓ Branch 4 taken 93838 times.
✓ Branch 5 taken 58770 times.
✗ Branch 6 not taken.
✓ Branch 7 taken 110158 times.
 206848 if (v->fcm == ILACE_FIELD || (v->fcm == PROGRESSIVE && v->mv_type_is_raw) || v->skip_is_raw)
2814
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 96690 times.
 96690 if (get_bits_left(&v->s.gb) <= 1) {
2815 ✗ ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
2816 ✗ return;
2817 }
2818
2819
2/2
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✓ Branch 1 taken 168928 times.
 206848 if (v->fcm == ILACE_FIELD) {
2820 37920 ret = vc1_decode_p_mb_intfi(v);
2821
1/2
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✗ Branch 1 not taken.
 37920 if (apply_loop_filter)
2822 37920 ff_vc1_p_loop_filter(v);
2823
2/2
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✓ Branch 1 taken 152608 times.
 168928 } else if (v->fcm == ILACE_FRAME) {
2824 16320 ret = vc1_decode_p_mb_intfr(v);
2825
1/2
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✗ Branch 1 not taken.
 16320 if (apply_loop_filter)
2826 16320 ff_vc1_p_intfr_loop_filter(v);
2827 } else {
2828 152608 ret = vc1_decode_p_mb(v);
2829
2/2
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✓ Branch 1 taken 59280 times.
 152608 if (apply_loop_filter)
2830 93328 ff_vc1_p_loop_filter(v);
2831 }
2832
4/6
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 206848 if (ret < 0 || get_bits_left(&s->gb) < 0 || get_bits_count(&s->gb) < 0) {
2833 // TODO: may need modification to handle slice coding
2834 1 ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
2835 1 av_log(s->avctx, AV_LOG_ERROR, "Error or Bits overconsumption: %i > %i at %ix%i\n",
2836 1 get_bits_count(&s->gb), s->gb.size_in_bits, s->mb_x, s->mb_y);
2837 1 return;
2838 }
2839
2/2
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✓ Branch 1 taken 202449 times.
 206847 inc_blk_idx(v->topleft_blk_idx);
2840
2/2
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✓ Branch 1 taken 202017 times.
 206847 inc_blk_idx(v->top_blk_idx);
2841
2/2
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✓ Branch 1 taken 202576 times.
 206847 inc_blk_idx(v->left_blk_idx);
2842
2/2
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✓ Branch 1 taken 202449 times.
 206847 inc_blk_idx(v->cur_blk_idx);
2843 }
2844 5378 memmove(v->cbp_base,
2845 5378 v->cbp - s->mb_stride,
2846 5378 sizeof(v->cbp_base[0]) * 2 * s->mb_stride);
2847 5378 memmove(v->ttblk_base,
2848 5378 v->ttblk - s->mb_stride,
2849 5378 sizeof(v->ttblk_base[0]) * 2 * s->mb_stride);
2850 5378 memmove(v->is_intra_base,
2851 5378 v->is_intra - s->mb_stride,
2852 5378 sizeof(v->is_intra_base[0]) * 2 * s->mb_stride);
2853 5378 memmove(v->luma_mv_base,
2854 5378 v->luma_mv - s->mb_stride,
2855 5378 sizeof(v->luma_mv_base[0]) * 2 * s->mb_stride);
2856 5378 s->first_slice_line = 0;
2857 }
2858 916 ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
2859 916 (s->end_mb_y << v->field_mode) - 1, ER_MB_END);
2860 }
2861
2862 109 static void vc1_decode_b_blocks(VC1Context *v)
2863 {
2864 109 MpegEncContext *s = &v->s;
2865
2866 /* select coding mode used for VLC tables selection */
2867
3/4
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 109 switch (v->c_ac_table_index) {
2868 14 case 0:
2869
1/2
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✗ Branch 1 not taken.
 14 v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
2870 14 break;
2871 16 case 1:
2872 16 v->codingset = CS_HIGH_MOT_INTRA;
2873 16 break;
2874 79 case 2:
2875 79 v->codingset = CS_MID_RATE_INTRA;
2876 79 break;
2877 }
2878
2879
3/4
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 109 switch (v->c_ac_table_index) {
2880 14 case 0:
2881
1/2
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✗ Branch 1 not taken.
 14 v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
2882 14 break;
2883 16 case 1:
2884 16 v->codingset2 = CS_HIGH_MOT_INTER;
2885 16 break;
2886 79 case 2:
2887 79 v->codingset2 = CS_MID_RATE_INTER;
2888 79 break;
2889 }
2890
2891 109 s->first_slice_line = 1;
2892
2/2
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✓ Branch 1 taken 109 times.
 1809 for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
2893 1700 s->mb_x = 0;
2894 1700 init_block_index(v);
2895
2/2
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✓ Branch 1 taken 1700 times.
 106820 for (; s->mb_x < s->mb_width; s->mb_x++) {
2896 105120 update_block_index(s);
2897
2898
4/6
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 105120 if (v->fcm == ILACE_FIELD || v->skip_is_raw || v->dmb_is_raw)
2899
1/2
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 51540 if (get_bits_left(&v->s.gb) <= 1) {
2900 ✗ ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
2901 ✗ return;
2902 }
2903
2904
2/2
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✓ Branch 1 taken 53580 times.
 105120 if (v->fcm == ILACE_FIELD) {
2905 51540 vc1_decode_b_mb_intfi(v);
2906
1/2
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✗ Branch 1 not taken.
 51540 if (v->s.loop_filter)
2907 51540 ff_vc1_b_intfi_loop_filter(v);
2908
2/2
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✓ Branch 1 taken 20940 times.
 53580 } else if (v->fcm == ILACE_FRAME) {
2909 32640 vc1_decode_b_mb_intfr(v);
2910
1/2
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✗ Branch 1 not taken.
 32640 if (v->s.loop_filter)
2911 32640 ff_vc1_p_intfr_loop_filter(v);
2912 } else {
2913 20940 vc1_decode_b_mb(v);
2914
2/2
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✓ Branch 1 taken 14850 times.
 20940 if (v->s.loop_filter)
2915 6090 ff_vc1_i_loop_filter(v);
2916 }
2917
2/4
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 105120 if (get_bits_left(&s->gb) < 0 || get_bits_count(&s->gb) < 0) {
2918 // TODO: may need modification to handle slice coding
2919 ✗ ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
2920 ✗ av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n",
2921 ✗ get_bits_count(&s->gb), s->gb.size_in_bits, s->mb_x, s->mb_y);
2922 ✗ return;
2923 }
2924 }
2925 1700 memmove(v->cbp_base,
2926 1700 v->cbp - s->mb_stride,
2927 1700 sizeof(v->cbp_base[0]) * 2 * s->mb_stride);
2928 1700 memmove(v->ttblk_base,
2929 1700 v->ttblk - s->mb_stride,
2930 1700 sizeof(v->ttblk_base[0]) * 2 * s->mb_stride);
2931 1700 memmove(v->is_intra_base,
2932 1700 v->is_intra - s->mb_stride,
2933 1700 sizeof(v->is_intra_base[0]) * 2 * s->mb_stride);
2934 1700 s->first_slice_line = 0;
2935 }
2936 109 ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
2937 109 (s->end_mb_y << v->field_mode) - 1, ER_MB_END);
2938 }
2939
2940 67 static void vc1_decode_skip_blocks(VC1Context *v)
2941 {
2942 67 MpegEncContext *s = &v->s;
2943
2944
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 67 times.
 67 if (!v->s.last_pic.data[0])
2945 ✗ return;
2946
2947 67 ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_width - 1, s->end_mb_y - 1, ER_MB_END);
2948 67 s->first_slice_line = 1;
2949
2/2
✓ Branch 0 taken 1617 times.
✓ Branch 1 taken 67 times.
 1684 for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
2950 1617 s->mb_x = 0;
2951 1617 init_block_index(v);
2952 1617 update_block_index(s);
2953 1617 memcpy(s->dest[0], s->last_pic.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
2954 1617 memcpy(s->dest[1], s->last_pic.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
2955 1617 memcpy(s->dest[2], s->last_pic.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
2956 1617 s->first_slice_line = 0;
2957 }
2958 }
2959
2960 1211 void ff_vc1_decode_blocks(VC1Context *v)
2961 {
2962
2963 1211 v->s.esc3_level_length = 0;
2964
1/2
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✓ Branch 1 taken 1211 times.
 1211 if (v->x8_type) {
2965 ✗ ff_intrax8_decode_picture(&v->x8, v->s.cur_pic.ptr,
2966 &v->s.gb, &v->s.mb_x, &v->s.mb_y,
2967 ✗ 2 * v->pq + v->halfpq, v->pq * !v->pquantizer,
2968 v->s.loop_filter, v->s.low_delay);
2969
2970 ✗ ff_er_add_slice(&v->s.er, 0, 0,
2971 ✗ (v->s.mb_x >> 1) - 1, (v->s.mb_y >> 1) - 1,
2972 ER_MB_END);
2973 } else {
2974 1211 v->cur_blk_idx = 0;
2975 1211 v->left_blk_idx = -1;
2976 1211 v->topleft_blk_idx = 1;
2977 1211 v->top_blk_idx = 2;
2978
3/4
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✓ Branch 2 taken 109 times.
✗ Branch 3 not taken.
 1211 switch (v->s.pict_type) {
2979 118 case AV_PICTURE_TYPE_I:
2980
2/2
✓ Branch 0 taken 28 times.
✓ Branch 1 taken 90 times.
 118 if (v->profile == PROFILE_ADVANCED)
2981 28 vc1_decode_i_blocks_adv(v);
2982 else
2983 90 vc1_decode_i_blocks(v);
2984 118 break;
2985 984 case AV_PICTURE_TYPE_P:
2986
2/2
✓ Branch 0 taken 67 times.
✓ Branch 1 taken 917 times.
 984 if (v->p_frame_skipped)
2987 67 vc1_decode_skip_blocks(v);
2988 else
2989 917 vc1_decode_p_blocks(v);
2990 984 break;
2991 109 case AV_PICTURE_TYPE_B:
2992
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 109 times.
 109 if (v->bi_type) {
2993 ✗ if (v->profile == PROFILE_ADVANCED)
2994 ✗ vc1_decode_i_blocks_adv(v);
2995 else
2996 ✗ vc1_decode_i_blocks(v);
2997 } else
2998 109 vc1_decode_b_blocks(v);
2999 109 break;
3000 }
3001 }
3002 1211 }
3003