FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/rv34.c
Date: 2022-07-07 01:21:54
Exec Total Coverage
Lines: 927 1042 89.0%
Branches: 544 669 81.3%
Line Branch Exec Source
1 /*
2 * RV30/40 decoder common data
3 * Copyright (c) 2007 Mike Melanson, Konstantin Shishkov
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * RV30/40 decoder common data
25 */
26
27 #include "libavutil/avassert.h"
28 #include "libavutil/imgutils.h"
29 #include "libavutil/internal.h"
30 #include "libavutil/mem_internal.h"
31 #include "libavutil/thread.h"
32 #include "libavutil/video_enc_params.h"
33
34 #include "avcodec.h"
35 #include "error_resilience.h"
36 #include "mpegutils.h"
37 #include "mpegvideo.h"
38 #include "mpegvideodec.h"
39 #include "golomb.h"
40 #include "internal.h"
41 #include "mathops.h"
42 #include "mpeg_er.h"
43 #include "qpeldsp.h"
44 #include "rectangle.h"
45 #include "thread.h"
46 #include "threadframe.h"
47
48 #include "rv34vlc.h"
49 #include "rv34data.h"
50 #include "rv34.h"
51
52 454602 static inline void ZERO8x2(void* dst, int stride)
53 {
54 454602 fill_rectangle(dst, 1, 2, stride, 0, 4);
55 454602 fill_rectangle(((uint8_t*)(dst))+4, 1, 2, stride, 0, 4);
56 454602 }
57
58 /** translation of RV30/40 macroblock types to lavc ones */
59 static const int rv34_mb_type_to_lavc[12] = {
60 MB_TYPE_INTRA,
61 MB_TYPE_INTRA16x16 | MB_TYPE_SEPARATE_DC,
62 MB_TYPE_16x16 | MB_TYPE_L0,
63 MB_TYPE_8x8 | MB_TYPE_L0,
64 MB_TYPE_16x16 | MB_TYPE_L0,
65 MB_TYPE_16x16 | MB_TYPE_L1,
66 MB_TYPE_SKIP,
67 MB_TYPE_DIRECT2 | MB_TYPE_16x16,
68 MB_TYPE_16x8 | MB_TYPE_L0,
69 MB_TYPE_8x16 | MB_TYPE_L0,
70 MB_TYPE_16x16 | MB_TYPE_L0L1,
71 MB_TYPE_16x16 | MB_TYPE_L0 | MB_TYPE_SEPARATE_DC
72 };
73
74
75 static RV34VLC intra_vlcs[NUM_INTRA_TABLES], inter_vlcs[NUM_INTER_TABLES];
76
77 static int rv34_decode_mv(RV34DecContext *r, int block_type);
78
79 /**
80 * @name RV30/40 VLC generating functions
81 * @{
82 */
83
84 static VLCElem table_data[117592];
85
86 /**
87 * Generate VLC from codeword lengths.
88 * @param bits codeword lengths (zeroes are accepted)
89 * @param size length of input data
90 * @param vlc output VLC
91 * @param insyms symbols for input codes (NULL for default ones)
92 * @param num VLC table number (for static initialization)
93 */
94 895 static void rv34_gen_vlc(const uint8_t *bits, int size, VLC *vlc, const uint8_t *syms,
95 int *offset)
96 {
97 895 int counts[17] = {0}, codes[17];
98 uint16_t cw[MAX_VLC_SIZE];
99 int maxbits;
100
101
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 291215 for (int i = 0; i < size; i++)
102 290320 counts[bits[i]]++;
103
104 /* bits[0] is zero for some tables, i.e. syms actually starts at 1.
105 * So we reset it here. The code assigned to this element is 0x00. */
106 895 codes[0] = counts[0] = 0;
107
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 15215 for (int i = 0; i < 16; i++) {
108 14320 codes[i+1] = (codes[i] + counts[i]) << 1;
109
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 14320 if (counts[i])
110 8095 maxbits = i;
111 }
112
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 291215 for (int i = 0; i < size; i++)
113 290320 cw[i] = codes[bits[i]]++;
114
115 895 vlc->table = &table_data[*offset];
116 895 vlc->table_allocated = FF_ARRAY_ELEMS(table_data) - *offset;
117 895 ff_init_vlc_sparse(vlc, FFMIN(maxbits, 9), size,
118 bits, 1, 1,
119 cw, 2, 2,
120 syms, !!syms, !!syms, INIT_VLC_STATIC_OVERLONG);
121 895 *offset += vlc->table_size;
122 895 }
123
124 /**
125 * Initialize all tables.
126 */
127 5 static av_cold void rv34_init_tables(void)
128 {
129 5 int i, j, k, offset = 0;
130
131
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 30 for(i = 0; i < NUM_INTRA_TABLES; i++){
132
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 75 for(j = 0; j < 2; j++){
133 50 rv34_gen_vlc(rv34_table_intra_cbppat [i][j], CBPPAT_VLC_SIZE,
134 &intra_vlcs[i].cbppattern[j], NULL, &offset);
135 50 rv34_gen_vlc(rv34_table_intra_secondpat[i][j], OTHERBLK_VLC_SIZE,
136 &intra_vlcs[i].second_pattern[j], NULL, &offset);
137 50 rv34_gen_vlc(rv34_table_intra_thirdpat [i][j], OTHERBLK_VLC_SIZE,
138 &intra_vlcs[i].third_pattern[j], NULL, &offset);
139
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 250 for(k = 0; k < 4; k++){
140 200 rv34_gen_vlc(rv34_table_intra_cbp[i][j+k*2], CBP_VLC_SIZE,
141 &intra_vlcs[i].cbp[j][k], rv34_cbp_code, &offset);
142 }
143 }
144
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 125 for(j = 0; j < 4; j++){
145 100 rv34_gen_vlc(rv34_table_intra_firstpat[i][j], FIRSTBLK_VLC_SIZE,
146 &intra_vlcs[i].first_pattern[j], NULL, &offset);
147 }
148 25 rv34_gen_vlc(rv34_intra_coeff[i], COEFF_VLC_SIZE,
149 &intra_vlcs[i].coefficient, NULL, &offset);
150 }
151
152
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 40 for(i = 0; i < NUM_INTER_TABLES; i++){
153 35 rv34_gen_vlc(rv34_inter_cbppat[i], CBPPAT_VLC_SIZE,
154 &inter_vlcs[i].cbppattern[0], NULL, &offset);
155
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 175 for(j = 0; j < 4; j++){
156 140 rv34_gen_vlc(rv34_inter_cbp[i][j], CBP_VLC_SIZE,
157 &inter_vlcs[i].cbp[0][j], rv34_cbp_code, &offset);
158 }
159
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 105 for(j = 0; j < 2; j++){
160 70 rv34_gen_vlc(rv34_table_inter_firstpat [i][j], FIRSTBLK_VLC_SIZE,
161 &inter_vlcs[i].first_pattern[j], NULL, &offset);
162 70 rv34_gen_vlc(rv34_table_inter_secondpat[i][j], OTHERBLK_VLC_SIZE,
163 &inter_vlcs[i].second_pattern[j], NULL, &offset);
164 70 rv34_gen_vlc(rv34_table_inter_thirdpat [i][j], OTHERBLK_VLC_SIZE,
165 &inter_vlcs[i].third_pattern[j], NULL, &offset);
166 }
167 35 rv34_gen_vlc(rv34_inter_coeff[i], COEFF_VLC_SIZE,
168 &inter_vlcs[i].coefficient, NULL, &offset);
169 }
170 5 }
171
172 /** @} */ // vlc group
173
174 /**
175 * @name RV30/40 4x4 block decoding functions
176 * @{
177 */
178
179 /**
180 * Decode coded block pattern.
181 */
182 129189 static int rv34_decode_cbp(GetBitContext *gb, RV34VLC *vlc, int table)
183 {
184 129189 int pattern, code, cbp=0;
185 int ones;
186 static const int cbp_masks[3] = {0x100000, 0x010000, 0x110000};
187 static const int shifts[4] = { 0, 2, 8, 10 };
188 129189 const int *curshift = shifts;
189 int i, t, mask;
190
191 129189 code = get_vlc2(gb, vlc->cbppattern[table].table, 9, 2);
192 129189 pattern = code & 0xF;
193 129189 code >>= 4;
194
195 129189 ones = rv34_count_ones[pattern];
196
197
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 645945 for(mask = 8; mask; mask >>= 1, curshift++){
198
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 516756 if(pattern & mask)
199 181416 cbp |= get_vlc2(gb, vlc->cbp[table][ones].table, vlc->cbp[table][ones].bits, 1) << curshift[0];
200 }
201
202
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 645945 for(i = 0; i < 4; i++){
203 516756 t = (modulo_three_table[code] >> (6 - 2*i)) & 3;
204
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 516756 if(t == 1)
205 121158 cbp |= cbp_masks[get_bits1(gb)] << i;
206
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 516756 if(t == 2)
207 59165 cbp |= cbp_masks[2] << i;
208 }
209 129189 return cbp;
210 }
211
212 /**
213 * Get one coefficient value from the bitstream and store it.
214 */
215 2269770 static inline void decode_coeff(int16_t *dst, int coef, int esc, GetBitContext *gb, VLC* vlc, int q)
216 {
217
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 2269770 if(coef){
218
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 1158695 if(coef == esc){
219 158483 coef = get_vlc2(gb, vlc->table, 9, 2);
220
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 158483 if(coef > 23){
221 139 coef -= 23;
222 139 coef = 22 + ((1 << coef) | get_bits(gb, coef));
223 }
224 158483 coef += esc;
225 }
226
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 1158695 if(get_bits1(gb))
227 572454 coef = -coef;
228 1158695 *dst = (coef*q + 8) >> 4;
229 }
230 2269770 }
231
232 /**
233 * Decode 2x2 subblock of coefficients.
234 */
235 134059 static inline void decode_subblock(int16_t *dst, int code, const int is_block2, GetBitContext *gb, VLC *vlc, int q)
236 {
237 134059 int flags = modulo_three_table[code];
238
239 134059 decode_coeff( dst+0*4+0, (flags >> 6) , 3, gb, vlc, q);
240
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 134059 if(is_block2){
241 83261 decode_coeff(dst+1*4+0, (flags >> 4) & 3, 2, gb, vlc, q);
242 83261 decode_coeff(dst+0*4+1, (flags >> 2) & 3, 2, gb, vlc, q);
243 }else{
244 50798 decode_coeff(dst+0*4+1, (flags >> 4) & 3, 2, gb, vlc, q);
245 50798 decode_coeff(dst+1*4+0, (flags >> 2) & 3, 2, gb, vlc, q);
246 }
247 134059 decode_coeff( dst+1*4+1, (flags >> 0) & 3, 2, gb, vlc, q);
248 134059 }
249
250 /**
251 * Decode a single coefficient.
252 */
253 404286 static inline void decode_subblock1(int16_t *dst, int code, GetBitContext *gb, VLC *vlc, int q)
254 {
255 404286 int coeff = modulo_three_table[code] >> 6;
256 404286 decode_coeff(dst, coeff, 3, gb, vlc, q);
257 404286 }
258
259 332312 static inline void decode_subblock3(int16_t *dst, int code, GetBitContext *gb, VLC *vlc,
260 int q_dc, int q_ac1, int q_ac2)
261 {
262 332312 int flags = modulo_three_table[code];
263
264 332312 decode_coeff(dst+0*4+0, (flags >> 6) , 3, gb, vlc, q_dc);
265 332312 decode_coeff(dst+0*4+1, (flags >> 4) & 3, 2, gb, vlc, q_ac1);
266 332312 decode_coeff(dst+1*4+0, (flags >> 2) & 3, 2, gb, vlc, q_ac1);
267 332312 decode_coeff(dst+1*4+1, (flags >> 0) & 3, 2, gb, vlc, q_ac2);
268 332312 }
269
270 /**
271 * Decode coefficients for 4x4 block.
272 *
273 * This is done by filling 2x2 subblocks with decoded coefficients
274 * in this order (the same for subblocks and subblock coefficients):
275 * o--o
276 * /
277 * /
278 * o--o
279 */
280
281 736598 static int rv34_decode_block(int16_t *dst, GetBitContext *gb, RV34VLC *rvlc, int fc, int sc, int q_dc, int q_ac1, int q_ac2)
282 {
283 736598 int code, pattern, has_ac = 1;
284
285 736598 code = get_vlc2(gb, rvlc->first_pattern[fc].table, 9, 2);
286
287 736598 pattern = code & 0x7;
288
289 736598 code >>= 3;
290
291
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 736598 if (modulo_three_table[code] & 0x3F) {
292 332312 decode_subblock3(dst, code, gb, &rvlc->coefficient, q_dc, q_ac1, q_ac2);
293 } else {
294 404286 decode_subblock1(dst, code, gb, &rvlc->coefficient, q_dc);
295
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 404286 if (!pattern)
296 363407 return 0;
297 40879 has_ac = 0;
298 }
299
300
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 373191 if(pattern & 4){
301 44632 code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2);
302 44632 decode_subblock(dst + 4*0+2, code, 0, gb, &rvlc->coefficient, q_ac2);
303 }
304
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 373191 if(pattern & 2){ // Looks like coefficients 1 and 2 are swapped for this block
305 83261 code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2);
306 83261 decode_subblock(dst + 4*2+0, code, 1, gb, &rvlc->coefficient, q_ac2);
307 }
308
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 373191 if(pattern & 1){
309 6166 code = get_vlc2(gb, rvlc->third_pattern[sc].table, 9, 2);
310 6166 decode_subblock(dst + 4*2+2, code, 0, gb, &rvlc->coefficient, q_ac2);
311 }
312 373191 return has_ac | pattern;
313 }
314
315 /**
316 * @name RV30/40 bitstream parsing
317 * @{
318 */
319
320 /**
321 * Decode starting slice position.
322 * @todo Maybe replace with ff_h263_decode_mba() ?
323 */
324 2770 int ff_rv34_get_start_offset(GetBitContext *gb, int mb_size)
325 {
326 int i;
327
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328
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 10368 if(rv34_mb_max_sizes[i] >= mb_size - 1)
329 2770 break;
330 2770 return rv34_mb_bits_sizes[i];
331 }
332
333 /**
334 * Select VLC set for decoding from current quantizer, modifier and frame type.
335 */
336 130283 static inline RV34VLC* choose_vlc_set(int quant, int mod, int type)
337 {
338
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 130283 if(mod == 2 && quant < 19) quant += 10;
339
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 70216 else if(mod && quant < 26) quant += 5;
340 av_assert2(quant >= 0 && quant < 32);
341 97819 return type ? &inter_vlcs[rv34_quant_to_vlc_set[1][quant]]
342
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 130283 : &intra_vlcs[rv34_quant_to_vlc_set[0][quant]];
343 }
344
345 /**
346 * Decode intra macroblock header and return CBP in case of success, -1 otherwise.
347 */
348 7640 static int rv34_decode_intra_mb_header(RV34DecContext *r, int8_t *intra_types)
349 {
350 7640 MpegEncContext *s = &r->s;
351 7640 GetBitContext *gb = &s->gb;
352 7640 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
353 int t;
354
355 7640 r->is16 = get_bits1(gb);
356
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 7640 if(r->is16){
357 5830 s->current_picture_ptr->mb_type[mb_pos] = MB_TYPE_INTRA16x16;
358 5830 r->block_type = RV34_MB_TYPE_INTRA16x16;
359 5830 t = get_bits(gb, 2);
360 5830 fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0]));
361 5830 r->luma_vlc = 2;
362 }else{
363
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 1810 if(!r->rv30){
364
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 467 if(!get_bits1(gb))
365 ✗ av_log(s->avctx, AV_LOG_ERROR, "Need DQUANT\n");
366 }
367 1810 s->current_picture_ptr->mb_type[mb_pos] = MB_TYPE_INTRA;
368 1810 r->block_type = RV34_MB_TYPE_INTRA;
369
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 1810 if(r->decode_intra_types(r, gb, intra_types) < 0)
370 ✗ return -1;
371 1810 r->luma_vlc = 1;
372 }
373
374 7640 r->chroma_vlc = 0;
375 7640 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
376
377 7640 return rv34_decode_cbp(gb, r->cur_vlcs, r->is16);
378 }
379
380 /**
381 * Decode inter macroblock header and return CBP in case of success, -1 otherwise.
382 */
383 284640 static int rv34_decode_inter_mb_header(RV34DecContext *r, int8_t *intra_types)
384 {
385 284640 MpegEncContext *s = &r->s;
386 284640 GetBitContext *gb = &s->gb;
387 284640 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
388 int i, t;
389
390 284640 r->block_type = r->decode_mb_info(r);
391
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 284640 if(r->block_type == -1)
392 ✗ return -1;
393 284640 s->current_picture_ptr->mb_type[mb_pos] = rv34_mb_type_to_lavc[r->block_type];
394 284640 r->mb_type[mb_pos] = r->block_type;
395
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 284640 if(r->block_type == RV34_MB_SKIP){
396
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 163091 if(s->pict_type == AV_PICTURE_TYPE_P)
397 31305 r->mb_type[mb_pos] = RV34_MB_P_16x16;
398
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 163091 if(s->pict_type == AV_PICTURE_TYPE_B)
399 131786 r->mb_type[mb_pos] = RV34_MB_B_DIRECT;
400 }
401 284640 r->is16 = !!IS_INTRA16x16(s->current_picture_ptr->mb_type[mb_pos]);
402
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 284640 if (rv34_decode_mv(r, r->block_type) < 0)
403 ✗ return -1;
404
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 284640 if(r->block_type == RV34_MB_SKIP){
405 163091 fill_rectangle(intra_types, 4, 4, r->intra_types_stride, 0, sizeof(intra_types[0]));
406 163091 return 0;
407 }
408 121549 r->chroma_vlc = 1;
409 121549 r->luma_vlc = 0;
410
411
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 121549 if(IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])){
412
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 24277 if(r->is16){
413 10976 t = get_bits(gb, 2);
414 10976 fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0]));
415 10976 r->luma_vlc = 2;
416 }else{
417
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 13301 if(r->decode_intra_types(r, gb, intra_types) < 0)
418 ✗ return -1;
419 13301 r->luma_vlc = 1;
420 }
421 24277 r->chroma_vlc = 0;
422 24277 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
423 }else{
424
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 1653624 for(i = 0; i < 16; i++)
425 1556352 intra_types[(i & 3) + (i>>2) * r->intra_types_stride] = 0;
426 97272 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1);
427
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 97272 if(r->mb_type[mb_pos] == RV34_MB_P_MIX16x16){
428 547 r->is16 = 1;
429 547 r->chroma_vlc = 1;
430 547 r->luma_vlc = 2;
431 547 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
432 }
433 }
434
435 121549 return rv34_decode_cbp(gb, r->cur_vlcs, r->is16);
436 }
437
438 /** @} */ //bitstream functions
439
440 /**
441 * @name motion vector related code (prediction, reconstruction, motion compensation)
442 * @{
443 */
444
445 /** macroblock partition width in 8x8 blocks */
446 static const uint8_t part_sizes_w[RV34_MB_TYPES] = { 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 2 };
447
448 /** macroblock partition height in 8x8 blocks */
449 static const uint8_t part_sizes_h[RV34_MB_TYPES] = { 2, 2, 2, 1, 2, 2, 2, 2, 1, 2, 2, 2 };
450
451 /** availability index for subblocks */
452 static const uint8_t avail_indexes[4] = { 6, 7, 10, 11 };
453
454 /**
455 * motion vector prediction
456 *
457 * Motion prediction performed for the block by using median prediction of
458 * motion vectors from the left, top and right top blocks but in corner cases
459 * some other vectors may be used instead.
460 */
461 42620 static void rv34_pred_mv(RV34DecContext *r, int block_type, int subblock_no, int dmv_no)
462 {
463 42620 MpegEncContext *s = &r->s;
464 42620 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
465 42620 int A[2] = {0}, B[2], C[2];
466 int i, j;
467 int mx, my;
468 42620 int* avail = r->avail_cache + avail_indexes[subblock_no];
469 42620 int c_off = part_sizes_w[block_type];
470
471 42620 mv_pos += (subblock_no & 1) + (subblock_no >> 1)*s->b8_stride;
472
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 42620 if(subblock_no == 3)
473 4526 c_off = -1;
474
475
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 42620 if(avail[-1]){
476 41140 A[0] = s->current_picture_ptr->motion_val[0][mv_pos-1][0];
477 41140 A[1] = s->current_picture_ptr->motion_val[0][mv_pos-1][1];
478 }
479
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 42620 if(avail[-4]){
480 30363 B[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][0];
481 30363 B[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][1];
482 }else{
483 12257 B[0] = A[0];
484 12257 B[1] = A[1];
485 }
486
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 42620 if(!avail[c_off-4]){
487
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 13924 if(avail[-4] && (avail[-1] || r->rv30)){
488 1813 C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][0];
489 1813 C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][1];
490 }else{
491 12111 C[0] = A[0];
492 12111 C[1] = A[1];
493 }
494 }else{
495 28696 C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+c_off][0];
496 28696 C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+c_off][1];
497 }
498 42620 mx = mid_pred(A[0], B[0], C[0]);
499 42620 my = mid_pred(A[1], B[1], C[1]);
500 42620 mx += r->dmv[dmv_no][0];
501 42620 my += r->dmv[dmv_no][1];
502
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 107064 for(j = 0; j < part_sizes_h[block_type]; j++){
503
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 165336 for(i = 0; i < part_sizes_w[block_type]; i++){
504 100892 s->current_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][0] = mx;
505 100892 s->current_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][1] = my;
506 }
507 }
508 42620 }
509
510 #define GET_PTS_DIFF(a, b) (((a) - (b) + 8192) & 0x1FFF)
511
512 /**
513 * Calculate motion vector component that should be added for direct blocks.
514 */
515 802736 static int calc_add_mv(RV34DecContext *r, int dir, int val)
516 {
517
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 802736 int mul = dir ? -r->mv_weight2 : r->mv_weight1;
518
519 802736 return (int)(val * (SUINT)mul + 0x2000) >> 14;
520 }
521
522 /**
523 * Predict motion vector for B-frame macroblock.
524 */
525 47002 static inline void rv34_pred_b_vector(int A[2], int B[2], int C[2],
526 int A_avail, int B_avail, int C_avail,
527 int *mx, int *my)
528 {
529
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 47002 if(A_avail + B_avail + C_avail != 3){
530 34307 *mx = A[0] + B[0] + C[0];
531 34307 *my = A[1] + B[1] + C[1];
532
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 34307 if(A_avail + B_avail + C_avail == 2){
533 11581 *mx /= 2;
534 11581 *my /= 2;
535 }
536 }else{
537 12695 *mx = mid_pred(A[0], B[0], C[0]);
538 12695 *my = mid_pred(A[1], B[1], C[1]);
539 }
540 47002 }
541
542 /**
543 * motion vector prediction for B-frames
544 */
545 47002 static void rv34_pred_mv_b(RV34DecContext *r, int block_type, int dir)
546 {
547 47002 MpegEncContext *s = &r->s;
548 47002 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
549 47002 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
550 47002 int A[2] = { 0 }, B[2] = { 0 }, C[2] = { 0 };
551 47002 int has_A = 0, has_B = 0, has_C = 0;
552 int mx, my;
553 int i, j;
554 47002 Picture *cur_pic = s->current_picture_ptr;
555
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 47002 const int mask = dir ? MB_TYPE_L1 : MB_TYPE_L0;
556 47002 int type = cur_pic->mb_type[mb_pos];
557
558
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 47002 if((r->avail_cache[6-1] & type) & mask){
559 29561 A[0] = cur_pic->motion_val[dir][mv_pos - 1][0];
560 29561 A[1] = cur_pic->motion_val[dir][mv_pos - 1][1];
561 29561 has_A = 1;
562 }
563
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 47002 if((r->avail_cache[6-4] & type) & mask){
564 24041 B[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride][0];
565 24041 B[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride][1];
566 24041 has_B = 1;
567 }
568
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 47002 if(r->avail_cache[6-4] && (r->avail_cache[6-2] & type) & mask){
569 21963 C[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride + 2][0];
570 21963 C[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride + 2][1];
571 21963 has_C = 1;
572
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 25039 }else if((s->mb_x+1) == s->mb_width && (r->avail_cache[6-5] & type) & mask){
573 386 C[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride - 1][0];
574 386 C[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride - 1][1];
575 386 has_C = 1;
576 }
577
578 47002 rv34_pred_b_vector(A, B, C, has_A, has_B, has_C, &mx, &my);
579
580 47002 mx += r->dmv[dir][0];
581 47002 my += r->dmv[dir][1];
582
583
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 141006 for(j = 0; j < 2; j++){
584
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 282012 for(i = 0; i < 2; i++){
585 188008 cur_pic->motion_val[dir][mv_pos + i + j*s->b8_stride][0] = mx;
586 188008 cur_pic->motion_val[dir][mv_pos + i + j*s->b8_stride][1] = my;
587 }
588 }
589
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 47002 if(block_type == RV34_MB_B_BACKWARD || block_type == RV34_MB_B_FORWARD){
590 28476 ZERO8x2(cur_pic->motion_val[!dir][mv_pos], s->b8_stride);
591 }
592 47002 }
593
594 /**
595 * motion vector prediction - RV3 version
596 */
597 9134 static void rv34_pred_mv_rv3(RV34DecContext *r, int block_type, int dir)
598 {
599 9134 MpegEncContext *s = &r->s;
600 9134 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
601 9134 int A[2] = {0}, B[2], C[2];
602 int i, j, k;
603 int mx, my;
604 9134 int* avail = r->avail_cache + avail_indexes[0];
605
606
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 9134 if(avail[-1]){
607 8666 A[0] = s->current_picture_ptr->motion_val[0][mv_pos - 1][0];
608 8666 A[1] = s->current_picture_ptr->motion_val[0][mv_pos - 1][1];
609 }
610
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 9134 if(avail[-4]){
611 8618 B[0] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride][0];
612 8618 B[1] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride][1];
613 }else{
614 516 B[0] = A[0];
615 516 B[1] = A[1];
616 }
617
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 9134 if(!avail[-4 + 2]){
618
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 950 if(avail[-4] && (avail[-1])){
619 434 C[0] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride - 1][0];
620 434 C[1] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride - 1][1];
621 }else{
622 516 C[0] = A[0];
623 516 C[1] = A[1];
624 }
625 }else{
626 8184 C[0] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride + 2][0];
627 8184 C[1] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride + 2][1];
628 }
629 9134 mx = mid_pred(A[0], B[0], C[0]);
630 9134 my = mid_pred(A[1], B[1], C[1]);
631 9134 mx += r->dmv[0][0];
632 9134 my += r->dmv[0][1];
633
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634
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635
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 109608 for(k = 0; k < 2; k++){
636 73072 s->current_picture_ptr->motion_val[k][mv_pos + i + j*s->b8_stride][0] = mx;
637 73072 s->current_picture_ptr->motion_val[k][mv_pos + i + j*s->b8_stride][1] = my;
638 }
639 }
640 }
641 9134 }
642
643 static const int chroma_coeffs[3] = { 0, 3, 5 };
644
645 /**
646 * generic motion compensation function
647 *
648 * @param r decoder context
649 * @param block_type type of the current block
650 * @param xoff horizontal offset from the start of the current block
651 * @param yoff vertical offset from the start of the current block
652 * @param mv_off offset to the motion vector information
653 * @param width width of the current partition in 8x8 blocks
654 * @param height height of the current partition in 8x8 blocks
655 * @param dir motion compensation direction (i.e. from the last or the next reference frame)
656 * @param thirdpel motion vectors are specified in 1/3 of pixel
657 * @param qpel_mc a set of functions used to perform luma motion compensation
658 * @param chroma_mc a set of functions used to perform chroma motion compensation
659 */
660 511743 static inline void rv34_mc(RV34DecContext *r, const int block_type,
661 const int xoff, const int yoff, int mv_off,
662 const int width, const int height, int dir,
663 const int thirdpel, int weighted,
664 qpel_mc_func (*qpel_mc)[16],
665 h264_chroma_mc_func (*chroma_mc))
666 {
667 511743 MpegEncContext *s = &r->s;
668 uint8_t *Y, *U, *V, *srcY, *srcU, *srcV;
669 int dxy, mx, my, umx, umy, lx, ly, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
670 511743 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride + mv_off;
671 511743 int is16x16 = 1;
672 511743 int emu = 0;
673
674
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 511743 if(thirdpel){
675 int chroma_mx, chroma_my;
676 127708 mx = (s->current_picture_ptr->motion_val[dir][mv_pos][0] + (3 << 24)) / 3 - (1 << 24);
677 127708 my = (s->current_picture_ptr->motion_val[dir][mv_pos][1] + (3 << 24)) / 3 - (1 << 24);
678 127708 lx = (s->current_picture_ptr->motion_val[dir][mv_pos][0] + (3 << 24)) % 3;
679 127708 ly = (s->current_picture_ptr->motion_val[dir][mv_pos][1] + (3 << 24)) % 3;
680 127708 chroma_mx = s->current_picture_ptr->motion_val[dir][mv_pos][0] / 2;
681 127708 chroma_my = s->current_picture_ptr->motion_val[dir][mv_pos][1] / 2;
682 127708 umx = (chroma_mx + (3 << 24)) / 3 - (1 << 24);
683 127708 umy = (chroma_my + (3 << 24)) / 3 - (1 << 24);
684 127708 uvmx = chroma_coeffs[(chroma_mx + (3 << 24)) % 3];
685 127708 uvmy = chroma_coeffs[(chroma_my + (3 << 24)) % 3];
686 }else{
687 int cx, cy;
688 384035 mx = s->current_picture_ptr->motion_val[dir][mv_pos][0] >> 2;
689 384035 my = s->current_picture_ptr->motion_val[dir][mv_pos][1] >> 2;
690 384035 lx = s->current_picture_ptr->motion_val[dir][mv_pos][0] & 3;
691 384035 ly = s->current_picture_ptr->motion_val[dir][mv_pos][1] & 3;
692 384035 cx = s->current_picture_ptr->motion_val[dir][mv_pos][0] / 2;
693 384035 cy = s->current_picture_ptr->motion_val[dir][mv_pos][1] / 2;
694 384035 umx = cx >> 2;
695 384035 umy = cy >> 2;
696 384035 uvmx = (cx & 3) << 1;
697 384035 uvmy = (cy & 3) << 1;
698 //due to some flaw RV40 uses the same MC compensation routine for H2V2 and H3V3
699
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 384035 if(uvmx == 6 && uvmy == 6)
700 7377 uvmx = uvmy = 4;
701 }
702
703
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 511743 if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME)) {
704 /* wait for the referenced mb row to be finished */
705 ✗ int mb_row = s->mb_y + ((yoff + my + 5 + 8 * height) >> 4);
706 ✗ ThreadFrame *f = dir ? &s->next_picture_ptr->tf : &s->last_picture_ptr->tf;
707 ✗ ff_thread_await_progress(f, mb_row, 0);
708 }
709
710 511743 dxy = ly*4 + lx;
711
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 511743 srcY = dir ? s->next_picture_ptr->f->data[0] : s->last_picture_ptr->f->data[0];
712
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 511743 srcU = dir ? s->next_picture_ptr->f->data[1] : s->last_picture_ptr->f->data[1];
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 511743 srcV = dir ? s->next_picture_ptr->f->data[2] : s->last_picture_ptr->f->data[2];
714 511743 src_x = s->mb_x * 16 + xoff + mx;
715 511743 src_y = s->mb_y * 16 + yoff + my;
716 511743 uvsrc_x = s->mb_x * 8 + (xoff >> 1) + umx;
717 511743 uvsrc_y = s->mb_y * 8 + (yoff >> 1) + umy;
718 511743 srcY += src_y * s->linesize + src_x;
719 511743 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
720 511743 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
721
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 511743 if(s->h_edge_pos - (width << 3) < 6 || s->v_edge_pos - (height << 3) < 6 ||
722
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 511743 (unsigned)(src_x - !!lx*2) > s->h_edge_pos - !!lx*2 - (width <<3) - 4 ||
723
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 495678 (unsigned)(src_y - !!ly*2) > s->v_edge_pos - !!ly*2 - (height<<3) - 4) {
724 43652 srcY -= 2 + 2*s->linesize;
725 43652 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, srcY,
726 s->linesize, s->linesize,
727 43652 (width << 3) + 6, (height << 3) + 6,
728 src_x - 2, src_y - 2,
729 s->h_edge_pos, s->v_edge_pos);
730 43652 srcY = s->sc.edge_emu_buffer + 2 + 2*s->linesize;
731 43652 emu = 1;
732 }
733
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 511743 if(!weighted){
734 230597 Y = s->dest[0] + xoff + yoff *s->linesize;
735 230597 U = s->dest[1] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
736 230597 V = s->dest[2] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
737 }else{
738 281146 Y = r->tmp_b_block_y [dir] + xoff + yoff *s->linesize;
739 281146 U = r->tmp_b_block_uv[dir*2] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
740 281146 V = r->tmp_b_block_uv[dir*2+1] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
741 }
742
743
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 511743 if(block_type == RV34_MB_P_16x8){
744 2692 qpel_mc[1][dxy](Y, srcY, s->linesize);
745 2692 Y += 8;
746 2692 srcY += 8;
747
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 509051 }else if(block_type == RV34_MB_P_8x16){
748 4946 qpel_mc[1][dxy](Y, srcY, s->linesize);
749 4946 Y += 8 * s->linesize;
750 4946 srcY += 8 * s->linesize;
751 }
752
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 511743 is16x16 = (block_type != RV34_MB_P_8x8) && (block_type != RV34_MB_P_16x8) && (block_type != RV34_MB_P_8x16);
753
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 511743 qpel_mc[!is16x16][dxy](Y, srcY, s->linesize);
754
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 511743 if (emu) {
755 43652 uint8_t *uvbuf = s->sc.edge_emu_buffer;
756
757 43652 s->vdsp.emulated_edge_mc(uvbuf, srcU,
758 s->uvlinesize, s->uvlinesize,
759 43652 (width << 2) + 1, (height << 2) + 1,
760 uvsrc_x, uvsrc_y,
761 43652 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
762 43652 srcU = uvbuf;
763 43652 uvbuf += 9*s->uvlinesize;
764
765 43652 s->vdsp.emulated_edge_mc(uvbuf, srcV,
766 s->uvlinesize, s->uvlinesize,
767 43652 (width << 2) + 1, (height << 2) + 1,
768 uvsrc_x, uvsrc_y,
769 43652 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
770 43652 srcV = uvbuf;
771 }
772 511743 chroma_mc[2-width] (U, srcU, s->uvlinesize, height*4, uvmx, uvmy);
773 511743 chroma_mc[2-width] (V, srcV, s->uvlinesize, height*4, uvmx, uvmy);
774 511743 }
775
776 111535 static void rv34_mc_1mv(RV34DecContext *r, const int block_type,
777 const int xoff, const int yoff, int mv_off,
778 const int width, const int height, int dir)
779 {
780 111535 rv34_mc(r, block_type, xoff, yoff, mv_off, width, height, dir, r->rv30, 0,
781 111535 r->rdsp.put_pixels_tab,
782 111535 r->rdsp.put_chroma_pixels_tab);
783 111535 }
784
785 115964 static void rv4_weight(RV34DecContext *r)
786 {
787 115964 r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][0](r->s.dest[0],
788 r->tmp_b_block_y[0],
789 r->tmp_b_block_y[1],
790 r->weight1,
791 r->weight2,
792 r->s.linesize);
793 115964 r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][1](r->s.dest[1],
794 r->tmp_b_block_uv[0],
795 r->tmp_b_block_uv[2],
796 r->weight1,
797 r->weight2,
798 r->s.uvlinesize);
799 115964 r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][1](r->s.dest[2],
800 r->tmp_b_block_uv[1],
801 r->tmp_b_block_uv[3],
802 r->weight1,
803 r->weight2,
804 r->s.uvlinesize);
805 115964 }
806
807 154932 static void rv34_mc_2mv(RV34DecContext *r, const int block_type)
808 {
809
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 154932 int weighted = !r->rv30 && block_type != RV34_MB_B_BIDIR && r->weight1 != 8192;
810
811 154932 rv34_mc(r, block_type, 0, 0, 0, 2, 2, 0, r->rv30, weighted,
812 154932 r->rdsp.put_pixels_tab,
813 154932 r->rdsp.put_chroma_pixels_tab);
814
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 154932 if(!weighted){
815 47171 rv34_mc(r, block_type, 0, 0, 0, 2, 2, 1, r->rv30, 0,
816 47171 r->rdsp.avg_pixels_tab,
817 47171 r->rdsp.avg_chroma_pixels_tab);
818 }else{
819 107761 rv34_mc(r, block_type, 0, 0, 0, 2, 2, 1, r->rv30, 1,
820 107761 r->rdsp.put_pixels_tab,
821 107761 r->rdsp.put_chroma_pixels_tab);
822 107761 rv4_weight(r);
823 }
824 154932 }
825
826 11293 static void rv34_mc_2mv_skip(RV34DecContext *r)
827 {
828 int i, j;
829
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 11293 int weighted = !r->rv30 && r->weight1 != 8192;
830
831
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 33879 for(j = 0; j < 2; j++)
832
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 67758 for(i = 0; i < 2; i++){
833 45172 rv34_mc(r, RV34_MB_P_8x8, i*8, j*8, i+j*r->s.b8_stride, 1, 1, 0, r->rv30,
834 weighted,
835 45172 r->rdsp.put_pixels_tab,
836 45172 r->rdsp.put_chroma_pixels_tab);
837
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 45172 rv34_mc(r, RV34_MB_P_8x8, i*8, j*8, i+j*r->s.b8_stride, 1, 1, 1, r->rv30,
838 weighted,
839 weighted ? r->rdsp.put_pixels_tab : r->rdsp.avg_pixels_tab,
840 weighted ? r->rdsp.put_chroma_pixels_tab : r->rdsp.avg_chroma_pixels_tab);
841 }
842
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 11293 if(weighted)
843 8203 rv4_weight(r);
844 11293 }
845
846 /** number of motion vectors in each macroblock type */
847 static const int num_mvs[RV34_MB_TYPES] = { 0, 0, 1, 4, 1, 1, 0, 0, 2, 2, 2, 1 };
848
849 /**
850 * Decode motion vector differences
851 * and perform motion vector reconstruction and motion compensation.
852 */
853 284640 static int rv34_decode_mv(RV34DecContext *r, int block_type)
854 {
855 284640 MpegEncContext *s = &r->s;
856 284640 GetBitContext *gb = &s->gb;
857 int i, j, k, l;
858 284640 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
859 int next_bt;
860
861 284640 memset(r->dmv, 0, sizeof(r->dmv));
862
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 383396 for(i = 0; i < num_mvs[block_type]; i++){
863 98756 r->dmv[i][0] = get_interleaved_se_golomb(gb);
864 98756 r->dmv[i][1] = get_interleaved_se_golomb(gb);
865
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 98756 if (r->dmv[i][0] == INVALID_VLC ||
866
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 98756 r->dmv[i][1] == INVALID_VLC) {
867 ✗ r->dmv[i][0] = r->dmv[i][1] = 0;
868 ✗ return AVERROR_INVALIDDATA;
869 }
870 }
871
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 284640 switch(block_type){
872 24277 case RV34_MB_TYPE_INTRA:
873 case RV34_MB_TYPE_INTRA16x16:
874 24277 ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
875 24277 return 0;
876 163091 case RV34_MB_SKIP:
877
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 163091 if(s->pict_type == AV_PICTURE_TYPE_P){
878 31305 ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
879 31305 rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0);
880 31305 break;
881 }
882 case RV34_MB_B_DIRECT:
883 //surprisingly, it uses motion scheme from next reference frame
884 /* wait for the current mb row to be finished */
885
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 156962 if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME))
886 ✗ ff_thread_await_progress(&s->next_picture_ptr->tf, FFMAX(0, s->mb_y-1), 0);
887
888 156962 next_bt = s->next_picture_ptr->mb_type[s->mb_x + s->mb_y * s->mb_stride];
889
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 156962 if(IS_INTRA(next_bt) || IS_SKIP(next_bt)){
890 106791 ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
891 106791 ZERO8x2(s->current_picture_ptr->motion_val[1][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
892 }else
893
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 150513 for(j = 0; j < 2; j++)
894
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 301026 for(i = 0; i < 2; i++)
895
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 602052 for(k = 0; k < 2; k++)
896
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 1204104 for(l = 0; l < 2; l++)
897 802736 s->current_picture_ptr->motion_val[l][mv_pos + i + j*s->b8_stride][k] = calc_add_mv(r, l, s->next_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][k]);
898
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 156962 if(!(IS_16X8(next_bt) || IS_8X16(next_bt) || IS_8X8(next_bt))) //we can use whole macroblock MC
899 145669 rv34_mc_2mv(r, block_type);
900 else
901 11293 rv34_mc_2mv_skip(r);
902 156962 ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
903 156962 break;
904 16878 case RV34_MB_P_16x16:
905 case RV34_MB_P_MIX16x16:
906 16878 rv34_pred_mv(r, block_type, 0, 0);
907 16878 rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0);
908 16878 break;
909 37610 case RV34_MB_B_FORWARD:
910 case RV34_MB_B_BACKWARD:
911 37610 r->dmv[1][0] = r->dmv[0][0];
912 37610 r->dmv[1][1] = r->dmv[0][1];
913
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 37610 if(r->rv30)
914 9134 rv34_pred_mv_rv3(r, block_type, block_type == RV34_MB_B_BACKWARD);
915 else
916 28476 rv34_pred_mv_b (r, block_type, block_type == RV34_MB_B_BACKWARD);
917 37610 rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, block_type == RV34_MB_B_BACKWARD);
918 37610 break;
919 3819 case RV34_MB_P_16x8:
920 case RV34_MB_P_8x16:
921 3819 rv34_pred_mv(r, block_type, 0, 0);
922
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 3819 rv34_pred_mv(r, block_type, 1 + (block_type == RV34_MB_P_16x8), 1);
923
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 3819 if(block_type == RV34_MB_P_16x8){
924 1346 rv34_mc_1mv(r, block_type, 0, 0, 0, 2, 1, 0);
925 1346 rv34_mc_1mv(r, block_type, 0, 8, s->b8_stride, 2, 1, 0);
926 }
927
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 3819 if(block_type == RV34_MB_P_8x16){
928 2473 rv34_mc_1mv(r, block_type, 0, 0, 0, 1, 2, 0);
929 2473 rv34_mc_1mv(r, block_type, 8, 0, 1, 1, 2, 0);
930 }
931 3819 break;
932 9263 case RV34_MB_B_BIDIR:
933 9263 rv34_pred_mv_b (r, block_type, 0);
934 9263 rv34_pred_mv_b (r, block_type, 1);
935 9263 rv34_mc_2mv (r, block_type);
936 9263 break;
937 4526 case RV34_MB_P_8x8:
938
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 22630 for(i=0;i< 4;i++){
939 18104 rv34_pred_mv(r, block_type, i, i);
940 18104 rv34_mc_1mv (r, block_type, (i&1)<<3, (i&2)<<2, (i&1)+(i>>1)*s->b8_stride, 1, 1, 0);
941 }
942 4526 break;
943 }
944
945 260363 return 0;
946 }
947 /** @} */ // mv group
948
949 /**
950 * @name Macroblock reconstruction functions
951 * @{
952 */
953 /** mapping of RV30/40 intra prediction types to standard H.264 types */
954 static const int ittrans[9] = {
955 DC_PRED, VERT_PRED, HOR_PRED, DIAG_DOWN_RIGHT_PRED, DIAG_DOWN_LEFT_PRED,
956 VERT_RIGHT_PRED, VERT_LEFT_PRED, HOR_UP_PRED, HOR_DOWN_PRED,
957 };
958
959 /** mapping of RV30/40 intra 16x16 prediction types to standard H.264 types */
960 static const int ittrans16[4] = {
961 DC_PRED8x8, VERT_PRED8x8, HOR_PRED8x8, PLANE_PRED8x8,
962 };
963
964 /**
965 * Perform 4x4 intra prediction.
966 */
967 362664 static void rv34_pred_4x4_block(RV34DecContext *r, uint8_t *dst, int stride, int itype, int up, int left, int down, int right)
968 {
969 362664 uint8_t *prev = dst - stride + 4;
970 uint32_t topleft;
971
972
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 362664 if(!up && !left)
973 906 itype = DC_128_PRED;
974
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 361758 else if(!up){
975
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 43702 if(itype == VERT_PRED) itype = HOR_PRED;
976
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 43702 if(itype == DC_PRED) itype = LEFT_DC_PRED;
977
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 318056 }else if(!left){
978
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 5318 if(itype == HOR_PRED) itype = VERT_PRED;
979
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 5318 if(itype == DC_PRED) itype = TOP_DC_PRED;
980
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 5318 if(itype == DIAG_DOWN_LEFT_PRED) itype = DIAG_DOWN_LEFT_PRED_RV40_NODOWN;
981 }
982
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 362664 if(!down){
983
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 289443 if(itype == DIAG_DOWN_LEFT_PRED) itype = DIAG_DOWN_LEFT_PRED_RV40_NODOWN;
984
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 289443 if(itype == HOR_UP_PRED) itype = HOR_UP_PRED_RV40_NODOWN;
985
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 289443 if(itype == VERT_LEFT_PRED) itype = VERT_LEFT_PRED_RV40_NODOWN;
986 }
987
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 362664 if(!right && up){
988 76047 topleft = dst[-stride + 3] * 0x01010101u;
989 76047 prev = (uint8_t*)&topleft;
990 }
991 362664 r->h.pred4x4[itype](dst, prev, stride);
992 362664 }
993
994 33612 static inline int adjust_pred16(int itype, int up, int left)
995 {
996
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 33612 if(!up && !left)
997 54 itype = DC_128_PRED8x8;
998
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 33558 else if(!up){
999
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 5754 if(itype == PLANE_PRED8x8)itype = HOR_PRED8x8;
1000
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 5754 if(itype == VERT_PRED8x8) itype = HOR_PRED8x8;
1001
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 5754 if(itype == DC_PRED8x8) itype = LEFT_DC_PRED8x8;
1002
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 27804 }else if(!left){
1003
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 836 if(itype == PLANE_PRED8x8)itype = VERT_PRED8x8;
1004
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 836 if(itype == HOR_PRED8x8) itype = VERT_PRED8x8;
1005
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 836 if(itype == DC_PRED8x8) itype = TOP_DC_PRED8x8;
1006 }
1007 33612 return itype;
1008 }
1009
1010 704977 static inline void rv34_process_block(RV34DecContext *r,
1011 uint8_t *pdst, int stride,
1012 int fc, int sc, int q_dc, int q_ac)
1013 {
1014 704977 MpegEncContext *s = &r->s;
1015 704977 int16_t *ptr = s->block[0];
1016 704977 int has_ac = rv34_decode_block(ptr, &s->gb, r->cur_vlcs,
1017 fc, sc, q_dc, q_ac, q_ac);
1018
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 704977 if(has_ac){
1019 350745 r->rdsp.rv34_idct_add(pdst, stride, ptr);
1020 }else{
1021 354232 r->rdsp.rv34_idct_dc_add(pdst, stride, ptr[0]);
1022 354232 ptr[0] = 0;
1023 }
1024 704977 }
1025
1026 16806 static void rv34_output_i16x16(RV34DecContext *r, int8_t *intra_types, int cbp)
1027 {
1028 16806 LOCAL_ALIGNED_16(int16_t, block16, [16]);
1029 16806 MpegEncContext *s = &r->s;
1030 16806 GetBitContext *gb = &s->gb;
1031 16806 int q_dc = rv34_qscale_tab[ r->luma_dc_quant_i[s->qscale] ],
1032 16806 q_ac = rv34_qscale_tab[s->qscale];
1033 16806 uint8_t *dst = s->dest[0];
1034 16806 int16_t *ptr = s->block[0];
1035 int i, j, itype, has_ac;
1036
1037 16806 memset(block16, 0, 16 * sizeof(*block16));
1038
1039 16806 has_ac = rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0, q_dc, q_dc, q_ac);
1040
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 16806 if(has_ac)
1041 7912 r->rdsp.rv34_inv_transform(block16);
1042 else
1043 8894 r->rdsp.rv34_inv_transform_dc(block16);
1044
1045 16806 itype = ittrans16[intra_types[0]];
1046 16806 itype = adjust_pred16(itype, r->avail_cache[6-4], r->avail_cache[6-1]);
1047 16806 r->h.pred16x16[itype](dst, s->linesize);
1048
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 84030 for(j = 0; j < 4; j++){
1050
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 336120 for(i = 0; i < 4; i++, cbp >>= 1){
1051 268896 int dc = block16[i + j*4];
1052
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 268896 if(cbp & 1){
1054 14262 has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac);
1055 }else
1056 254634 has_ac = 0;
1057
1058
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 268896 if(has_ac){
1059 14262 ptr[0] = dc;
1060 14262 r->rdsp.rv34_idct_add(dst+4*i, s->linesize, ptr);
1061 }else
1062 254634 r->rdsp.rv34_idct_dc_add(dst+4*i, s->linesize, dc);
1063 }
1064
1065 67224 dst += 4*s->linesize;
1066 }
1067
1068 16806 itype = ittrans16[intra_types[0]];
1069
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 16806 if(itype == PLANE_PRED8x8) itype = DC_PRED8x8;
1070 16806 itype = adjust_pred16(itype, r->avail_cache[6-4], r->avail_cache[6-1]);
1071
1072 16806 q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]];
1073 16806 q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]];
1074
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 50418 for(j = 1; j < 3; j++){
1076 33612 dst = s->dest[j];
1077 33612 r->h.pred8x8[itype](dst, s->uvlinesize);
1078
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 168060 for(i = 0; i < 4; i++, cbp >>= 1){
1079 uint8_t *pdst;
1080
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 134448 if(!(cbp & 1)) continue;
1081 24665 pdst = dst + (i&1)*4 + (i&2)*2*s->uvlinesize;
1082
1083 24665 rv34_process_block(r, pdst, s->uvlinesize,
1084 r->chroma_vlc, 1, q_dc, q_ac);
1085 }
1086 }
1087 16806 }
1088
1089 15111 static void rv34_output_intra(RV34DecContext *r, int8_t *intra_types, int cbp)
1090 {
1091 15111 MpegEncContext *s = &r->s;
1092 15111 uint8_t *dst = s->dest[0];
1093 15111 int avail[6*8] = {0};
1094 int i, j, k;
1095 int idx, q_ac, q_dc;
1096
1097 // Set neighbour information.
1098
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 15111 if(r->avail_cache[1])
1099 8914 avail[0] = 1;
1100
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 15111 if(r->avail_cache[2])
1101 9535 avail[1] = avail[2] = 1;
1102
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 15111 if(r->avail_cache[3])
1103 9535 avail[3] = avail[4] = 1;
1104
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 15111 if(r->avail_cache[4])
1105 9499 avail[5] = 1;
1106
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 15111 if(r->avail_cache[5])
1107 14333 avail[8] = avail[16] = 1;
1108
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 15111 if(r->avail_cache[9])
1109 14333 avail[24] = avail[32] = 1;
1110
1111 15111 q_ac = rv34_qscale_tab[s->qscale];
1112
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 75555 for(j = 0; j < 4; j++){
1113 60444 idx = 9 + j*8;
1114
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 302220 for(i = 0; i < 4; i++, cbp >>= 1, dst += 4, idx++){
1115 241776 rv34_pred_4x4_block(r, dst, s->linesize, ittrans[intra_types[i]], avail[idx-8], avail[idx-1], avail[idx+7], avail[idx-7]);
1116 241776 avail[idx] = 1;
1117
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 241776 if(!(cbp & 1)) continue;
1118
1119 148411 rv34_process_block(r, dst, s->linesize,
1120 r->luma_vlc, 0, q_ac, q_ac);
1121 }
1122 60444 dst += s->linesize * 4 - 4*4;
1123 60444 intra_types += r->intra_types_stride;
1124 }
1125
1126 15111 intra_types -= r->intra_types_stride * 4;
1127
1128 15111 q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]];
1129 15111 q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]];
1130
1131
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 45333 for(k = 0; k < 2; k++){
1132 30222 dst = s->dest[1+k];
1133 30222 fill_rectangle(r->avail_cache + 6, 2, 2, 4, 0, 4);
1134
1135
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 90666 for(j = 0; j < 2; j++){
1136 60444 int* acache = r->avail_cache + 6 + j*4;
1137
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 181332 for(i = 0; i < 2; i++, cbp >>= 1, acache++){
1138 120888 int itype = ittrans[intra_types[i*2+j*2*r->intra_types_stride]];
1139
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 120888 rv34_pred_4x4_block(r, dst+4*i, s->uvlinesize, itype, acache[-4], acache[-1], !i && !j, acache[-3]);
1140 120888 acache[0] = 1;
1141
1142
2/2
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 120888 if(!(cbp&1)) continue;
1143
1144 71067 rv34_process_block(r, dst + 4*i, s->uvlinesize,
1145 r->chroma_vlc, 1, q_dc, q_ac);
1146 }
1147
1148 60444 dst += 4*s->uvlinesize;
1149 }
1150 }
1151 15111 }
1152
1153 2246368 static int is_mv_diff_gt_3(int16_t (*motion_val)[2], int step)
1154 {
1155 int d;
1156 2246368 d = motion_val[0][0] - motion_val[-step][0];
1157
4/4
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 2246368 if(d < -3 || d > 3)
1158 188252 return 1;
1159 2058116 d = motion_val[0][1] - motion_val[-step][1];
1160
4/4
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✓ Branch 3 taken 2026264 times.
 2058116 if(d < -3 || d > 3)
1161 31852 return 1;
1162 2026264 return 0;
1163 }
1164
1165 284640 static int rv34_set_deblock_coef(RV34DecContext *r)
1166 {
1167 284640 MpegEncContext *s = &r->s;
1168 284640 int hmvmask = 0, vmvmask = 0, i, j;
1169 284640 int midx = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
1170 284640 int16_t (*motion_val)[2] = &s->current_picture_ptr->motion_val[0][midx];
1171
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 853920 for(j = 0; j < 16; j += 8){
1172
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 1707840 for(i = 0; i < 2; i++){
1173
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 1138560 if(is_mv_diff_gt_3(motion_val + i, 1))
1174 106472 vmvmask |= 0x11 << (j + i*2);
1175
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 1138560 if((j || s->mb_y) && is_mv_diff_gt_3(motion_val + i, s->b8_stride))
1176 113632 hmvmask |= 0x03 << (j + i*2);
1177 }
1178 569280 motion_val += s->b8_stride;
1179 }
1180
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 284640 if(s->first_slice_line)
1181 42347 hmvmask &= ~0x000F;
1182
2/2
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 284640 if(!s->mb_x)
1183 9120 vmvmask &= ~0x1111;
1184
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 284640 if(r->rv30){ //RV30 marks both subblocks on the edge for filtering
1185 68640 vmvmask |= (vmvmask & 0x4444) >> 1;
1186 68640 hmvmask |= (hmvmask & 0x0F00) >> 4;
1187
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 68640 if(s->mb_x)
1188 65520 r->deblock_coefs[s->mb_x - 1 + s->mb_y*s->mb_stride] |= (vmvmask & 0x1111) << 3;
1189
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 68640 if(!s->first_slice_line)
1190 61878 r->deblock_coefs[s->mb_x + (s->mb_y - 1)*s->mb_stride] |= (hmvmask & 0xF) << 12;
1191 }
1192 284640 return hmvmask | vmvmask;
1193 }
1194
1195 284640 static int rv34_decode_inter_macroblock(RV34DecContext *r, int8_t *intra_types)
1196 {
1197 284640 MpegEncContext *s = &r->s;
1198 284640 GetBitContext *gb = &s->gb;
1199 284640 uint8_t *dst = s->dest[0];
1200 284640 int16_t *ptr = s->block[0];
1201 284640 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1202 int cbp, cbp2;
1203 int q_dc, q_ac, has_ac;
1204 int i, j;
1205 int dist;
1206
1207 // Calculate which neighbours are available. Maybe it's worth optimizing too.
1208 284640 memset(r->avail_cache, 0, sizeof(r->avail_cache));
1209 284640 fill_rectangle(r->avail_cache + 6, 2, 2, 4, 1, 4);
1210 284640 dist = (s->mb_x - s->resync_mb_x) + (s->mb_y - s->resync_mb_y) * s->mb_width;
1211
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 284640 if(s->mb_x && dist)
1212 275017 r->avail_cache[5] =
1213 275017 r->avail_cache[9] = s->current_picture_ptr->mb_type[mb_pos - 1];
1214
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 284640 if(dist >= s->mb_width)
1215 242293 r->avail_cache[2] =
1216 242293 r->avail_cache[3] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride];
1217
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 284640 if(((s->mb_x+1) < s->mb_width) && dist >= s->mb_width - 1)
1218 234929 r->avail_cache[4] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride + 1];
1219
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 284640 if(s->mb_x && dist > s->mb_width)
1220 234004 r->avail_cache[1] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride - 1];
1221
1222 284640 s->qscale = r->si.quant;
1223 284640 cbp = cbp2 = rv34_decode_inter_mb_header(r, intra_types);
1224 284640 r->cbp_luma [mb_pos] = cbp;
1225 284640 r->cbp_chroma[mb_pos] = cbp >> 16;
1226 284640 r->deblock_coefs[mb_pos] = rv34_set_deblock_coef(r) | r->cbp_luma[mb_pos];
1227 284640 s->current_picture_ptr->qscale_table[mb_pos] = s->qscale;
1228
1229
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 284640 if(cbp == -1)
1230 ✗ return -1;
1231
1232
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 284640 if (IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])){
1233
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 24277 if(r->is16) rv34_output_i16x16(r, intra_types, cbp);
1234 13301 else rv34_output_intra(r, intra_types, cbp);
1235 24277 return 0;
1236 }
1237
1238
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 260363 if(r->is16){
1239 // Only for RV34_MB_P_MIX16x16
1240 547 LOCAL_ALIGNED_16(int16_t, block16, [16]);
1241 547 memset(block16, 0, 16 * sizeof(*block16));
1242 547 q_dc = rv34_qscale_tab[ r->luma_dc_quant_p[s->qscale] ];
1243 547 q_ac = rv34_qscale_tab[s->qscale];
1244
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✓ Branch 2 taken 281 times.
 547 if (rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0, q_dc, q_dc, q_ac))
1245 266 r->rdsp.rv34_inv_transform(block16);
1246 else
1247 281 r->rdsp.rv34_inv_transform_dc(block16);
1248
1249 547 q_ac = rv34_qscale_tab[s->qscale];
1250
1251
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 2735 for(j = 0; j < 4; j++){
1252
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 10940 for(i = 0; i < 4; i++, cbp >>= 1){
1253 8752 int dc = block16[i + j*4];
1254
1255
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 8752 if(cbp & 1){
1256 6 has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac);
1257 }else
1258 8746 has_ac = 0;
1259
1260
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 8752 if(has_ac){
1261 6 ptr[0] = dc;
1262 6 r->rdsp.rv34_idct_add(dst+4*i, s->linesize, ptr);
1263 }else
1264 8746 r->rdsp.rv34_idct_dc_add(dst+4*i, s->linesize, dc);
1265 }
1266
1267 2188 dst += 4*s->linesize;
1268 }
1269
1270 547 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1);
1271 }else{
1272 259816 q_ac = rv34_qscale_tab[s->qscale];
1273
1274
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 1299080 for(j = 0; j < 4; j++){
1275
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 5196320 for(i = 0; i < 4; i++, cbp >>= 1){
1276
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 4157056 if(!(cbp & 1)) continue;
1277
1278 317078 rv34_process_block(r, dst + 4*i, s->linesize,
1279 r->luma_vlc, 0, q_ac, q_ac);
1280 }
1281 1039264 dst += 4*s->linesize;
1282 }
1283 }
1284
1285 260363 q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]];
1286 260363 q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]];
1287
1288
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 781089 for(j = 1; j < 3; j++){
1289 520726 dst = s->dest[j];
1290
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 2603630 for(i = 0; i < 4; i++, cbp >>= 1){
1291 uint8_t *pdst;
1292
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 2082904 if(!(cbp & 1)) continue;
1293 143756 pdst = dst + (i&1)*4 + (i&2)*2*s->uvlinesize;
1294
1295 143756 rv34_process_block(r, pdst, s->uvlinesize,
1296 r->chroma_vlc, 1, q_dc, q_ac);
1297 }
1298 }
1299
1300 260363 return 0;
1301 }
1302
1303 7640 static int rv34_decode_intra_macroblock(RV34DecContext *r, int8_t *intra_types)
1304 {
1305 7640 MpegEncContext *s = &r->s;
1306 int cbp, dist;
1307 7640 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1308
1309 // Calculate which neighbours are available. Maybe it's worth optimizing too.
1310 7640 memset(r->avail_cache, 0, sizeof(r->avail_cache));
1311 7640 fill_rectangle(r->avail_cache + 6, 2, 2, 4, 1, 4);
1312 7640 dist = (s->mb_x - s->resync_mb_x) + (s->mb_y - s->resync_mb_y) * s->mb_width;
1313
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 7640 if(s->mb_x && dist)
1314 7325 r->avail_cache[5] =
1315 7325 r->avail_cache[9] = s->current_picture_ptr->mb_type[mb_pos - 1];
1316
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 7640 if(dist >= s->mb_width)
1317 6133 r->avail_cache[2] =
1318 6133 r->avail_cache[3] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride];
1319
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 7640 if(((s->mb_x+1) < s->mb_width) && dist >= s->mb_width - 1)
1320 5928 r->avail_cache[4] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride + 1];
1321
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 7640 if(s->mb_x && dist > s->mb_width)
1322 5878 r->avail_cache[1] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride - 1];
1323
1324 7640 s->qscale = r->si.quant;
1325 7640 cbp = rv34_decode_intra_mb_header(r, intra_types);
1326 7640 r->cbp_luma [mb_pos] = cbp;
1327 7640 r->cbp_chroma[mb_pos] = cbp >> 16;
1328 7640 r->deblock_coefs[mb_pos] = 0xFFFF;
1329 7640 s->current_picture_ptr->qscale_table[mb_pos] = s->qscale;
1330
1331
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 7640 if(cbp == -1)
1332 ✗ return -1;
1333
1334
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 7640 if(r->is16){
1335 5830 rv34_output_i16x16(r, intra_types, cbp);
1336 5830 return 0;
1337 }
1338
1339 1810 rv34_output_intra(r, intra_types, cbp);
1340 1810 return 0;
1341 }
1342
1343 293665 static int check_slice_end(RV34DecContext *r, MpegEncContext *s)
1344 {
1345 int bits;
1346
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 293665 if(s->mb_y >= s->mb_height)
1347 526 return 1;
1348
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 293139 if(!s->mb_num_left)
1349 859 return 1;
1350
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 292280 if(r->s.mb_skip_run > 1)
1351 128319 return 0;
1352 163961 bits = get_bits_left(&s->gb);
1353
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 163961 if(bits <= 0 || (bits < 8 && !show_bits(&s->gb, bits)))
1354 ✗ return 1;
1355 163961 return 0;
1356 }
1357
1358
1359 9 static void rv34_decoder_free(RV34DecContext *r)
1360 {
1361 9 av_freep(&r->intra_types_hist);
1362 9 r->intra_types = NULL;
1363 9 av_freep(&r->tmp_b_block_base);
1364 9 av_freep(&r->mb_type);
1365 9 av_freep(&r->cbp_luma);
1366 9 av_freep(&r->cbp_chroma);
1367 9 av_freep(&r->deblock_coefs);
1368 9 }
1369
1370
1371 9 static int rv34_decoder_alloc(RV34DecContext *r)
1372 {
1373 9 r->intra_types_stride = r->s.mb_width * 4 + 4;
1374
1375 9 r->cbp_chroma = av_mallocz(r->s.mb_stride * r->s.mb_height *
1376 sizeof(*r->cbp_chroma));
1377 9 r->cbp_luma = av_mallocz(r->s.mb_stride * r->s.mb_height *
1378 sizeof(*r->cbp_luma));
1379 9 r->deblock_coefs = av_mallocz(r->s.mb_stride * r->s.mb_height *
1380 sizeof(*r->deblock_coefs));
1381 9 r->intra_types_hist = av_malloc(r->intra_types_stride * 4 * 2 *
1382 sizeof(*r->intra_types_hist));
1383 9 r->mb_type = av_mallocz(r->s.mb_stride * r->s.mb_height *
1384 sizeof(*r->mb_type));
1385
1386
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 9 if (!(r->cbp_chroma && r->cbp_luma && r->deblock_coefs &&
1387
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 9 r->intra_types_hist && r->mb_type)) {
1388 ✗ r->s.context_reinit = 1;
1389 ✗ rv34_decoder_free(r);
1390 ✗ return AVERROR(ENOMEM);
1391 }
1392
1393 9 r->intra_types = r->intra_types_hist + r->intra_types_stride * 4;
1394
1395 9 return 0;
1396 }
1397
1398
1399 ✗ static int rv34_decoder_realloc(RV34DecContext *r)
1400 {
1401 ✗ rv34_decoder_free(r);
1402 ✗ return rv34_decoder_alloc(r);
1403 }
1404
1405
1406 1385 static int rv34_decode_slice(RV34DecContext *r, int end, const uint8_t* buf, int buf_size)
1407 {
1408 1385 MpegEncContext *s = &r->s;
1409 1385 GetBitContext *gb = &s->gb;
1410 int mb_pos, slice_type;
1411 int res;
1412
1413 1385 init_get_bits(&r->s.gb, buf, buf_size*8);
1414 1385 res = r->parse_slice_header(r, gb, &r->si);
1415
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 1385 if(res < 0){
1416 ✗ av_log(s->avctx, AV_LOG_ERROR, "Incorrect or unknown slice header\n");
1417 ✗ return -1;
1418 }
1419
1420
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 1385 slice_type = r->si.type ? r->si.type : AV_PICTURE_TYPE_I;
1421
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 1385 if (slice_type != s->pict_type) {
1422 ✗ av_log(s->avctx, AV_LOG_ERROR, "Slice type mismatch\n");
1423 ✗ return AVERROR_INVALIDDATA;
1424 }
1425
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 1385 if (s->width != r->si.width || s->height != r->si.height) {
1426 ✗ av_log(s->avctx, AV_LOG_ERROR, "Size mismatch\n");
1427 ✗ return AVERROR_INVALIDDATA;
1428 }
1429
1430 1385 r->si.end = end;
1431 1385 s->qscale = r->si.quant;
1432 1385 s->mb_num_left = r->si.end - r->si.start;
1433 1385 r->s.mb_skip_run = 0;
1434
1435 1385 mb_pos = s->mb_x + s->mb_y * s->mb_width;
1436
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 1385 if(r->si.start != mb_pos){
1437 ✗ av_log(s->avctx, AV_LOG_ERROR, "Slice indicates MB offset %d, got %d\n", r->si.start, mb_pos);
1438 ✗ s->mb_x = r->si.start % s->mb_width;
1439 ✗ s->mb_y = r->si.start / s->mb_width;
1440 }
1441 1385 memset(r->intra_types_hist, -1, r->intra_types_stride * 4 * 2 * sizeof(*r->intra_types_hist));
1442 1385 s->first_slice_line = 1;
1443 1385 s->resync_mb_x = s->mb_x;
1444 1385 s->resync_mb_y = s->mb_y;
1445
1446 1385 ff_init_block_index(s);
1447
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 293665 while(!check_slice_end(r, s)) {
1448 292280 ff_update_block_index(s);
1449
1450
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 292280 if(r->si.type)
1451 284640 res = rv34_decode_inter_macroblock(r, r->intra_types + s->mb_x * 4 + 4);
1452 else
1453 7640 res = rv34_decode_intra_macroblock(r, r->intra_types + s->mb_x * 4 + 4);
1454
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 292280 if(res < 0){
1455 ✗ ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_MB_ERROR);
1456 ✗ return -1;
1457 }
1458
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 292280 if (++s->mb_x == s->mb_width) {
1459 9408 s->mb_x = 0;
1460 9408 s->mb_y++;
1461 9408 ff_init_block_index(s);
1462
1463 9408 memmove(r->intra_types_hist, r->intra_types, r->intra_types_stride * 4 * sizeof(*r->intra_types_hist));
1464 9408 memset(r->intra_types, -1, r->intra_types_stride * 4 * sizeof(*r->intra_types_hist));
1465
1466
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 9408 if(r->loop_filter && s->mb_y >= 2)
1467 8882 r->loop_filter(r, s->mb_y - 2);
1468
1469
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 9408 if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME))
1470 ✗ ff_thread_report_progress(&s->current_picture_ptr->tf,
1471 ✗ s->mb_y - 2, 0);
1472
1473 }
1474
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 292280 if(s->mb_x == s->resync_mb_x)
1475 9031 s->first_slice_line=0;
1476 292280 s->mb_num_left--;
1477 }
1478 1385 ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_MB_END);
1479
1480 1385 return s->mb_y == s->mb_height;
1481 }
1482
1483 /** @} */ // reconstruction group end
1484
1485 /**
1486 * Initialize decoder.
1487 */
1488 9 av_cold int ff_rv34_decode_init(AVCodecContext *avctx)
1489 {
1490 static AVOnce init_static_once = AV_ONCE_INIT;
1491 9 RV34DecContext *r = avctx->priv_data;
1492 9 MpegEncContext *s = &r->s;
1493 int ret;
1494
1495 9 ff_mpv_decode_init(s, avctx);
1496 9 s->out_format = FMT_H263;
1497
1498 9 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
1499 9 avctx->has_b_frames = 1;
1500 9 s->low_delay = 0;
1501
1502 9 ff_mpv_idct_init(s);
1503
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 9 if ((ret = ff_mpv_common_init(s)) < 0)
1504 ✗ return ret;
1505
1506 9 ff_h264_pred_init(&r->h, AV_CODEC_ID_RV40, 8, 1);
1507
1508
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 9 if ((ret = rv34_decoder_alloc(r)) < 0) {
1509 ✗ ff_mpv_common_end(&r->s);
1510 ✗ return ret;
1511 }
1512
1513 9 ff_thread_once(&init_static_once, rv34_init_tables);
1514
1515 9 return 0;
1516 }
1517
1518 ✗ int ff_rv34_decode_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1519 {
1520 ✗ RV34DecContext *r = dst->priv_data, *r1 = src->priv_data;
1521 ✗ MpegEncContext * const s = &r->s, * const s1 = &r1->s;
1522 int err;
1523
1524 ✗ if (dst == src || !s1->context_initialized)
1525 ✗ return 0;
1526
1527 ✗ if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
1528 ✗ s->height = s1->height;
1529 ✗ s->width = s1->width;
1530 ✗ if ((err = ff_mpv_common_frame_size_change(s)) < 0)
1531 ✗ return err;
1532 ✗ if ((err = rv34_decoder_realloc(r)) < 0)
1533 ✗ return err;
1534 }
1535
1536 ✗ r->cur_pts = r1->cur_pts;
1537 ✗ r->last_pts = r1->last_pts;
1538 ✗ r->next_pts = r1->next_pts;
1539
1540 ✗ memset(&r->si, 0, sizeof(r->si));
1541
1542 // Do no call ff_mpeg_update_thread_context on a partially initialized
1543 // decoder context.
1544 ✗ if (!s1->context_initialized)
1545 ✗ return 0;
1546
1547 ✗ return ff_mpeg_update_thread_context(dst, src);
1548 }
1549
1550 4156 static int get_slice_offset(AVCodecContext *avctx, const uint8_t *buf, int n, int slice_count, int buf_size)
1551 {
1552
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 4156 if (n < slice_count) {
1553
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 3273 if(avctx->slice_count) return avctx->slice_offset[n];
1554
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 3273 else return AV_RL32(buf + n*8 - 4) == 1 ? AV_RL32(buf + n*8) : AV_RB32(buf + n*8);
1555 } else
1556 883 return buf_size;
1557 }
1558
1559 526 static int finish_frame(AVCodecContext *avctx, AVFrame *pict)
1560 {
1561 526 RV34DecContext *r = avctx->priv_data;
1562 526 MpegEncContext *s = &r->s;
1563 526 int got_picture = 0, ret;
1564
1565 526 ff_er_frame_end(&s->er);
1566 526 ff_mpv_frame_end(s);
1567 526 s->mb_num_left = 0;
1568
1569
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 526 if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME))
1570 ✗ ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0);
1571
1572
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 526 if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
1573
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 387 if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0)
1574 ✗ return ret;
1575 387 ff_print_debug_info(s, s->current_picture_ptr, pict);
1576 387 ff_mpv_export_qp_table(s, pict, s->current_picture_ptr, FF_MPV_QSCALE_TYPE_MPEG1);
1577 387 got_picture = 1;
1578
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 139 } else if (s->last_picture_ptr) {
1579
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 130 if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0)
1580 ✗ return ret;
1581 130 ff_print_debug_info(s, s->last_picture_ptr, pict);
1582 130 ff_mpv_export_qp_table(s, pict, s->last_picture_ptr, FF_MPV_QSCALE_TYPE_MPEG1);
1583 130 got_picture = 1;
1584 }
1585
1586 526 return got_picture;
1587 }
1588
1589 ✗ static AVRational update_sar(int old_w, int old_h, AVRational sar, int new_w, int new_h)
1590 {
1591 // attempt to keep aspect during typical resolution switches
1592 ✗ if (!sar.num)
1593 ✗ sar = (AVRational){1, 1};
1594
1595 ✗ sar = av_mul_q(sar, av_mul_q((AVRational){new_h, new_w}, (AVRational){old_w, old_h}));
1596 ✗ return sar;
1597 }
1598
1599 532 int ff_rv34_decode_frame(AVCodecContext *avctx, AVFrame *pict,
1600 int *got_picture_ptr, AVPacket *avpkt)
1601 {
1602 532 const uint8_t *buf = avpkt->data;
1603 532 int buf_size = avpkt->size;
1604 532 RV34DecContext *r = avctx->priv_data;
1605 532 MpegEncContext *s = &r->s;
1606 SliceInfo si;
1607 int i, ret;
1608 int slice_count;
1609 532 const uint8_t *slices_hdr = NULL;
1610 532 int last = 0;
1611 532 int faulty_b = 0;
1612 int offset;
1613
1614 /* no supplementary picture */
1615
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 532 if (buf_size == 0) {
1616 /* special case for last picture */
1617
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 6 if (s->low_delay==0 && s->next_picture_ptr) {
1618
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 4 if ((ret = av_frame_ref(pict, s->next_picture_ptr->f)) < 0)
1619 ✗ return ret;
1620 4 s->next_picture_ptr = NULL;
1621
1622 4 *got_picture_ptr = 1;
1623 }
1624 6 return 0;
1625 }
1626
1627
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 526 if(!avctx->slice_count){
1628 526 slice_count = (*buf++) + 1;
1629 526 slices_hdr = buf + 4;
1630 526 buf += 8 * slice_count;
1631 526 buf_size -= 1 + 8 * slice_count;
1632 }else
1633 ✗ slice_count = avctx->slice_count;
1634
1635 526 offset = get_slice_offset(avctx, slices_hdr, 0, slice_count, buf_size);
1636 //parse first slice header to check whether this frame can be decoded
1637
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 526 if(offset < 0 || offset > buf_size){
1638 ✗ av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n");
1639 ✗ return AVERROR_INVALIDDATA;
1640 }
1641 526 init_get_bits(&s->gb, buf+offset, (buf_size-offset)*8);
1642
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 526 if(r->parse_slice_header(r, &r->s.gb, &si) < 0 || si.start){
1643 ✗ av_log(avctx, AV_LOG_ERROR, "First slice header is incorrect\n");
1644 ✗ return AVERROR_INVALIDDATA;
1645 }
1646
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 526 if ((!s->last_picture_ptr || !s->last_picture_ptr->f->data[0]) &&
1647
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 13 si.type == AV_PICTURE_TYPE_B) {
1648 ✗ av_log(avctx, AV_LOG_ERROR, "Invalid decoder state: B-frame without "
1649 "reference data.\n");
1650 ✗ faulty_b = 1;
1651 }
1652
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 526 if( (avctx->skip_frame >= AVDISCARD_NONREF && si.type==AV_PICTURE_TYPE_B)
1653
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 526 || (avctx->skip_frame >= AVDISCARD_NONKEY && si.type!=AV_PICTURE_TYPE_I)
1654
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 526 || avctx->skip_frame >= AVDISCARD_ALL)
1655 ✗ return avpkt->size;
1656
1657 /* first slice */
1658
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 526 if (si.start == 0) {
1659
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 526 if (s->mb_num_left > 0 && s->current_picture_ptr) {
1660 ✗ av_log(avctx, AV_LOG_ERROR, "New frame but still %d MB left.\n",
1661 s->mb_num_left);
1662 ✗ if (!s->context_reinit)
1663 ✗ ff_er_frame_end(&s->er);
1664 ✗ ff_mpv_frame_end(s);
1665 }
1666
1667
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 526 if (s->width != si.width || s->height != si.height || s->context_reinit) {
1668 int err;
1669
1670 ✗ av_log(s->avctx, AV_LOG_WARNING, "Changing dimensions to %dx%d\n",
1671 si.width, si.height);
1672
1673 ✗ if (av_image_check_size(si.width, si.height, 0, s->avctx))
1674 ✗ return AVERROR_INVALIDDATA;
1675
1676 ✗ s->avctx->sample_aspect_ratio = update_sar(
1677 ✗ s->width, s->height, s->avctx->sample_aspect_ratio,
1678 si.width, si.height);
1679 ✗ s->width = si.width;
1680 ✗ s->height = si.height;
1681
1682 ✗ err = ff_set_dimensions(s->avctx, s->width, s->height);
1683 ✗ if (err < 0)
1684 ✗ return err;
1685 ✗ if ((err = ff_mpv_common_frame_size_change(s)) < 0)
1686 ✗ return err;
1687 ✗ if ((err = rv34_decoder_realloc(r)) < 0)
1688 ✗ return err;
1689 }
1690
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 526 if (faulty_b)
1691 ✗ return AVERROR_INVALIDDATA;
1692
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 526 s->pict_type = si.type ? si.type : AV_PICTURE_TYPE_I;
1693
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 526 if (ff_mpv_frame_start(s, s->avctx) < 0)
1694 ✗ return -1;
1695 526 ff_mpeg_er_frame_start(s);
1696
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 526 if (!r->tmp_b_block_base) {
1697 int i;
1698
1699 9 r->tmp_b_block_base = av_malloc(s->linesize * 48);
1700
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 27 for (i = 0; i < 2; i++)
1701 18 r->tmp_b_block_y[i] = r->tmp_b_block_base
1702 18 + i * 16 * s->linesize;
1703
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 45 for (i = 0; i < 4; i++)
1704 36 r->tmp_b_block_uv[i] = r->tmp_b_block_base + 32 * s->linesize
1705 36 + (i >> 1) * 8 * s->uvlinesize
1706 36 + (i & 1) * 16;
1707 }
1708 526 r->cur_pts = si.pts;
1709
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 526 if (s->pict_type != AV_PICTURE_TYPE_B) {
1710 139 r->last_pts = r->next_pts;
1711 139 r->next_pts = r->cur_pts;
1712 } else {
1713 387 int refdist = GET_PTS_DIFF(r->next_pts, r->last_pts);
1714 387 int dist0 = GET_PTS_DIFF(r->cur_pts, r->last_pts);
1715 387 int dist1 = GET_PTS_DIFF(r->next_pts, r->cur_pts);
1716
1717
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 387 if(!refdist){
1718 ✗ r->mv_weight1 = r->mv_weight2 = r->weight1 = r->weight2 = 8192;
1719 ✗ r->scaled_weight = 0;
1720 }else{
1721
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 387 if (FFMAX(dist0, dist1) > refdist)
1722 ✗ av_log(avctx, AV_LOG_TRACE, "distance overflow\n");
1723
1724 387 r->mv_weight1 = (dist0 << 14) / refdist;
1725 387 r->mv_weight2 = (dist1 << 14) / refdist;
1726
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 387 if((r->mv_weight1|r->mv_weight2) & 511){
1727 349 r->weight1 = r->mv_weight1;
1728 349 r->weight2 = r->mv_weight2;
1729 349 r->scaled_weight = 0;
1730 }else{
1731 38 r->weight1 = r->mv_weight1 >> 9;
1732 38 r->weight2 = r->mv_weight2 >> 9;
1733 38 r->scaled_weight = 1;
1734 }
1735 }
1736 }
1737 526 s->mb_x = s->mb_y = 0;
1738 526 ff_thread_finish_setup(s->avctx);
1739 ✗ } else if (s->context_reinit) {
1740 ✗ av_log(s->avctx, AV_LOG_ERROR, "Decoder needs full frames to "
1741 "reinitialize (start MB is %d).\n", si.start);
1742 ✗ return AVERROR_INVALIDDATA;
1743 ✗ } else if (HAVE_THREADS &&
1744 ✗ (s->avctx->active_thread_type & FF_THREAD_FRAME)) {
1745 ✗ av_log(s->avctx, AV_LOG_ERROR, "Decoder needs full frames in frame "
1746 "multithreading mode (start MB is %d).\n", si.start);
1747 ✗ return AVERROR_INVALIDDATA;
1748 }
1749
1750
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 1385 for(i = 0; i < slice_count; i++){
1751 1385 int offset = get_slice_offset(avctx, slices_hdr, i , slice_count, buf_size);
1752 1385 int offset1 = get_slice_offset(avctx, slices_hdr, i+1, slice_count, buf_size);
1753 int size;
1754
1755
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 1385 if(offset < 0 || offset > offset1 || offset1 > buf_size){
1756 ✗ av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n");
1757 ✗ break;
1758 }
1759 1385 size = offset1 - offset;
1760
1761 1385 r->si.end = s->mb_width * s->mb_height;
1762 1385 s->mb_num_left = r->s.mb_x + r->s.mb_y*r->s.mb_width - r->si.start;
1763
1764
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 1385 if(i+1 < slice_count){
1765 860 int offset2 = get_slice_offset(avctx, slices_hdr, i+2, slice_count, buf_size);
1766
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 860 if (offset2 < offset1 || offset2 > buf_size) {
1767 ✗ av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n");
1768 ✗ break;
1769 }
1770 860 init_get_bits(&s->gb, buf+offset1, (buf_size-offset1)*8);
1771
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 860 if(r->parse_slice_header(r, &r->s.gb, &si) < 0){
1772 1 size = offset2 - offset;
1773 }else
1774 859 r->si.end = si.start;
1775 }
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 1385 av_assert0 (size >= 0 && size <= buf_size - offset);
1777 1385 last = rv34_decode_slice(r, r->si.end, buf + offset, size);
1778
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 1385 if(last)
1779 526 break;
1780 }
1781
1782
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 526 if (s->current_picture_ptr) {
1783
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 526 if (last) {
1784
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 526 if(r->loop_filter)
1785 526 r->loop_filter(r, s->mb_height - 1);
1786
1787 526 ret = finish_frame(avctx, pict);
1788
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 526 if (ret < 0)
1789 ✗ return ret;
1790 526 *got_picture_ptr = ret;
1791 ✗ } else if (HAVE_THREADS &&
1792 ✗ (s->avctx->active_thread_type & FF_THREAD_FRAME)) {
1793 ✗ av_log(avctx, AV_LOG_INFO, "marking unfished frame as finished\n");
1794 /* always mark the current frame as finished, frame-mt supports
1795 * only complete frames */
1796 ✗ ff_er_frame_end(&s->er);
1797 ✗ ff_mpv_frame_end(s);
1798 ✗ s->mb_num_left = 0;
1799 ✗ ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0);
1800 ✗ return AVERROR_INVALIDDATA;
1801 }
1802 }
1803
1804 526 return avpkt->size;
1805 }
1806
1807 9 av_cold int ff_rv34_decode_end(AVCodecContext *avctx)
1808 {
1809 9 RV34DecContext *r = avctx->priv_data;
1810
1811 9 ff_mpv_common_end(&r->s);
1812 9 rv34_decoder_free(r);
1813
1814 9 return 0;
1815 }
1816