FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/rv34.c
Date: 2021-09-24 20:55:06
Exec Total Coverage
Lines: 928 1043 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 "golomb.h"
39 #include "internal.h"
40 #include "mathops.h"
41 #include "mpeg_er.h"
42 #include "qpeldsp.h"
43 #include "rectangle.h"
44 #include "thread.h"
45
46 #include "rv34vlc.h"
47 #include "rv34data.h"
48 #include "rv34.h"
49
50 454602 static inline void ZERO8x2(void* dst, int stride)
51 {
52 454602 fill_rectangle(dst, 1, 2, stride, 0, 4);
53 454602 fill_rectangle(((uint8_t*)(dst))+4, 1, 2, stride, 0, 4);
54 454602 }
55
56 /** translation of RV30/40 macroblock types to lavc ones */
57 static const int rv34_mb_type_to_lavc[12] = {
58 MB_TYPE_INTRA,
59 MB_TYPE_INTRA16x16 | MB_TYPE_SEPARATE_DC,
60 MB_TYPE_16x16 | MB_TYPE_L0,
61 MB_TYPE_8x8 | MB_TYPE_L0,
62 MB_TYPE_16x16 | MB_TYPE_L0,
63 MB_TYPE_16x16 | MB_TYPE_L1,
64 MB_TYPE_SKIP,
65 MB_TYPE_DIRECT2 | MB_TYPE_16x16,
66 MB_TYPE_16x8 | MB_TYPE_L0,
67 MB_TYPE_8x16 | MB_TYPE_L0,
68 MB_TYPE_16x16 | MB_TYPE_L0L1,
69 MB_TYPE_16x16 | MB_TYPE_L0 | MB_TYPE_SEPARATE_DC
70 };
71
72
73 static RV34VLC intra_vlcs[NUM_INTRA_TABLES], inter_vlcs[NUM_INTER_TABLES];
74
75 static int rv34_decode_mv(RV34DecContext *r, int block_type);
76
77 /**
78 * @name RV30/40 VLC generating functions
79 * @{
80 */
81
82 static VLC_TYPE table_data[117592][2];
83
84 /**
85 * Generate VLC from codeword lengths.
86 * @param bits codeword lengths (zeroes are accepted)
87 * @param size length of input data
88 * @param vlc output VLC
89 * @param insyms symbols for input codes (NULL for default ones)
90 * @param num VLC table number (for static initialization)
91 */
92 895 static void rv34_gen_vlc(const uint8_t *bits, int size, VLC *vlc, const uint8_t *syms,
93 int *offset)
94 {
95 895 int counts[17] = {0}, codes[17];
96 uint16_t cw[MAX_VLC_SIZE];
97 int maxbits;
98
99
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 291215 for (int i = 0; i < size; i++)
100 290320 counts[bits[i]]++;
101
102 /* bits[0] is zero for some tables, i.e. syms actually starts at 1.
103 * So we reset it here. The code assigned to this element is 0x00. */
104 895 codes[0] = counts[0] = 0;
105
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106 14320 codes[i+1] = (codes[i] + counts[i]) << 1;
107
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 14320 if (counts[i])
108 8095 maxbits = i;
109 }
110
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 291215 for (int i = 0; i < size; i++)
111 290320 cw[i] = codes[bits[i]]++;
112
113 895 vlc->table = &table_data[*offset];
114 895 vlc->table_allocated = FF_ARRAY_ELEMS(table_data) - *offset;
115 895 ff_init_vlc_sparse(vlc, FFMIN(maxbits, 9), size,
116 bits, 1, 1,
117 cw, 2, 2,
118 syms, !!syms, !!syms, INIT_VLC_STATIC_OVERLONG);
119 895 *offset += vlc->table_size;
120 895 }
121
122 /**
123 * Initialize all tables.
124 */
125 5 static av_cold void rv34_init_tables(void)
126 {
127 5 int i, j, k, offset = 0;
128
129
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 30 for(i = 0; i < NUM_INTRA_TABLES; i++){
130
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 75 for(j = 0; j < 2; j++){
131 50 rv34_gen_vlc(rv34_table_intra_cbppat [i][j], CBPPAT_VLC_SIZE,
132 &intra_vlcs[i].cbppattern[j], NULL, &offset);
133 50 rv34_gen_vlc(rv34_table_intra_secondpat[i][j], OTHERBLK_VLC_SIZE,
134 &intra_vlcs[i].second_pattern[j], NULL, &offset);
135 50 rv34_gen_vlc(rv34_table_intra_thirdpat [i][j], OTHERBLK_VLC_SIZE,
136 &intra_vlcs[i].third_pattern[j], NULL, &offset);
137
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 250 for(k = 0; k < 4; k++){
138 200 rv34_gen_vlc(rv34_table_intra_cbp[i][j+k*2], CBP_VLC_SIZE,
139 &intra_vlcs[i].cbp[j][k], rv34_cbp_code, &offset);
140 }
141 }
142
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 125 for(j = 0; j < 4; j++){
143 100 rv34_gen_vlc(rv34_table_intra_firstpat[i][j], FIRSTBLK_VLC_SIZE,
144 &intra_vlcs[i].first_pattern[j], NULL, &offset);
145 }
146 25 rv34_gen_vlc(rv34_intra_coeff[i], COEFF_VLC_SIZE,
147 &intra_vlcs[i].coefficient, NULL, &offset);
148 }
149
150
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 40 for(i = 0; i < NUM_INTER_TABLES; i++){
151 35 rv34_gen_vlc(rv34_inter_cbppat[i], CBPPAT_VLC_SIZE,
152 &inter_vlcs[i].cbppattern[0], NULL, &offset);
153
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 175 for(j = 0; j < 4; j++){
154 140 rv34_gen_vlc(rv34_inter_cbp[i][j], CBP_VLC_SIZE,
155 &inter_vlcs[i].cbp[0][j], rv34_cbp_code, &offset);
156 }
157
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 105 for(j = 0; j < 2; j++){
158 70 rv34_gen_vlc(rv34_table_inter_firstpat [i][j], FIRSTBLK_VLC_SIZE,
159 &inter_vlcs[i].first_pattern[j], NULL, &offset);
160 70 rv34_gen_vlc(rv34_table_inter_secondpat[i][j], OTHERBLK_VLC_SIZE,
161 &inter_vlcs[i].second_pattern[j], NULL, &offset);
162 70 rv34_gen_vlc(rv34_table_inter_thirdpat [i][j], OTHERBLK_VLC_SIZE,
163 &inter_vlcs[i].third_pattern[j], NULL, &offset);
164 }
165 35 rv34_gen_vlc(rv34_inter_coeff[i], COEFF_VLC_SIZE,
166 &inter_vlcs[i].coefficient, NULL, &offset);
167 }
168 5 }
169
170 /** @} */ // vlc group
171
172 /**
173 * @name RV30/40 4x4 block decoding functions
174 * @{
175 */
176
177 /**
178 * Decode coded block pattern.
179 */
180 129189 static int rv34_decode_cbp(GetBitContext *gb, RV34VLC *vlc, int table)
181 {
182 129189 int pattern, code, cbp=0;
183 int ones;
184 static const int cbp_masks[3] = {0x100000, 0x010000, 0x110000};
185 static const int shifts[4] = { 0, 2, 8, 10 };
186 129189 const int *curshift = shifts;
187 int i, t, mask;
188
189 129189 code = get_vlc2(gb, vlc->cbppattern[table].table, 9, 2);
190 129189 pattern = code & 0xF;
191 129189 code >>= 4;
192
193 129189 ones = rv34_count_ones[pattern];
194
195
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 645945 for(mask = 8; mask; mask >>= 1, curshift++){
196
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 516756 if(pattern & mask)
197 181416 cbp |= get_vlc2(gb, vlc->cbp[table][ones].table, vlc->cbp[table][ones].bits, 1) << curshift[0];
198 }
199
200
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 645945 for(i = 0; i < 4; i++){
201 516756 t = (modulo_three_table[code] >> (6 - 2*i)) & 3;
202
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 516756 if(t == 1)
203 121158 cbp |= cbp_masks[get_bits1(gb)] << i;
204
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 516756 if(t == 2)
205 59165 cbp |= cbp_masks[2] << i;
206 }
207 129189 return cbp;
208 }
209
210 /**
211 * Get one coefficient value from the bitstream and store it.
212 */
213 2269770 static inline void decode_coeff(int16_t *dst, int coef, int esc, GetBitContext *gb, VLC* vlc, int q)
214 {
215
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 2269770 if(coef){
216
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 1158695 if(coef == esc){
217 158483 coef = get_vlc2(gb, vlc->table, 9, 2);
218
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 158483 if(coef > 23){
219 139 coef -= 23;
220 139 coef = 22 + ((1 << coef) | get_bits(gb, coef));
221 }
222 158483 coef += esc;
223 }
224
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 1158695 if(get_bits1(gb))
225 572454 coef = -coef;
226 1158695 *dst = (coef*q + 8) >> 4;
227 }
228 2269770 }
229
230 /**
231 * Decode 2x2 subblock of coefficients.
232 */
233 134059 static inline void decode_subblock(int16_t *dst, int code, const int is_block2, GetBitContext *gb, VLC *vlc, int q)
234 {
235 134059 int flags = modulo_three_table[code];
236
237 134059 decode_coeff( dst+0*4+0, (flags >> 6) , 3, gb, vlc, q);
238
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 134059 if(is_block2){
239 83261 decode_coeff(dst+1*4+0, (flags >> 4) & 3, 2, gb, vlc, q);
240 83261 decode_coeff(dst+0*4+1, (flags >> 2) & 3, 2, gb, vlc, q);
241 }else{
242 50798 decode_coeff(dst+0*4+1, (flags >> 4) & 3, 2, gb, vlc, q);
243 50798 decode_coeff(dst+1*4+0, (flags >> 2) & 3, 2, gb, vlc, q);
244 }
245 134059 decode_coeff( dst+1*4+1, (flags >> 0) & 3, 2, gb, vlc, q);
246 134059 }
247
248 /**
249 * Decode a single coefficient.
250 */
251 404286 static inline void decode_subblock1(int16_t *dst, int code, GetBitContext *gb, VLC *vlc, int q)
252 {
253 404286 int coeff = modulo_three_table[code] >> 6;
254 404286 decode_coeff(dst, coeff, 3, gb, vlc, q);
255 404286 }
256
257 332312 static inline void decode_subblock3(int16_t *dst, int code, GetBitContext *gb, VLC *vlc,
258 int q_dc, int q_ac1, int q_ac2)
259 {
260 332312 int flags = modulo_three_table[code];
261
262 332312 decode_coeff(dst+0*4+0, (flags >> 6) , 3, gb, vlc, q_dc);
263 332312 decode_coeff(dst+0*4+1, (flags >> 4) & 3, 2, gb, vlc, q_ac1);
264 332312 decode_coeff(dst+1*4+0, (flags >> 2) & 3, 2, gb, vlc, q_ac1);
265 332312 decode_coeff(dst+1*4+1, (flags >> 0) & 3, 2, gb, vlc, q_ac2);
266 332312 }
267
268 /**
269 * Decode coefficients for 4x4 block.
270 *
271 * This is done by filling 2x2 subblocks with decoded coefficients
272 * in this order (the same for subblocks and subblock coefficients):
273 * o--o
274 * /
275 * /
276 * o--o
277 */
278
279 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)
280 {
281 736598 int code, pattern, has_ac = 1;
282
283 736598 code = get_vlc2(gb, rvlc->first_pattern[fc].table, 9, 2);
284
285 736598 pattern = code & 0x7;
286
287 736598 code >>= 3;
288
289
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 736598 if (modulo_three_table[code] & 0x3F) {
290 332312 decode_subblock3(dst, code, gb, &rvlc->coefficient, q_dc, q_ac1, q_ac2);
291 } else {
292 404286 decode_subblock1(dst, code, gb, &rvlc->coefficient, q_dc);
293
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 404286 if (!pattern)
294 363407 return 0;
295 40879 has_ac = 0;
296 }
297
298
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 373191 if(pattern & 4){
299 44632 code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2);
300 44632 decode_subblock(dst + 4*0+2, code, 0, gb, &rvlc->coefficient, q_ac2);
301 }
302
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 373191 if(pattern & 2){ // Looks like coefficients 1 and 2 are swapped for this block
303 83261 code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2);
304 83261 decode_subblock(dst + 4*2+0, code, 1, gb, &rvlc->coefficient, q_ac2);
305 }
306
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 373191 if(pattern & 1){
307 6166 code = get_vlc2(gb, rvlc->third_pattern[sc].table, 9, 2);
308 6166 decode_subblock(dst + 4*2+2, code, 0, gb, &rvlc->coefficient, q_ac2);
309 }
310 373191 return has_ac | pattern;
311 }
312
313 /**
314 * @name RV30/40 bitstream parsing
315 * @{
316 */
317
318 /**
319 * Decode starting slice position.
320 * @todo Maybe replace with ff_h263_decode_mba() ?
321 */
322 2770 int ff_rv34_get_start_offset(GetBitContext *gb, int mb_size)
323 {
324 int i;
325
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326
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 10368 if(rv34_mb_max_sizes[i] >= mb_size - 1)
327 2770 break;
328 2770 return rv34_mb_bits_sizes[i];
329 }
330
331 /**
332 * Select VLC set for decoding from current quantizer, modifier and frame type.
333 */
334 130283 static inline RV34VLC* choose_vlc_set(int quant, int mod, int type)
335 {
336
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 130283 if(mod == 2 && quant < 19) quant += 10;
337
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 70216 else if(mod && quant < 26) quant += 5;
338 av_assert2(quant >= 0 && quant < 32);
339 97819 return type ? &inter_vlcs[rv34_quant_to_vlc_set[1][quant]]
340
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 130283 : &intra_vlcs[rv34_quant_to_vlc_set[0][quant]];
341 }
342
343 /**
344 * Decode intra macroblock header and return CBP in case of success, -1 otherwise.
345 */
346 7640 static int rv34_decode_intra_mb_header(RV34DecContext *r, int8_t *intra_types)
347 {
348 7640 MpegEncContext *s = &r->s;
349 7640 GetBitContext *gb = &s->gb;
350 7640 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
351 int t;
352
353 7640 r->is16 = get_bits1(gb);
354
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 7640 if(r->is16){
355 5830 s->current_picture_ptr->mb_type[mb_pos] = MB_TYPE_INTRA16x16;
356 5830 r->block_type = RV34_MB_TYPE_INTRA16x16;
357 5830 t = get_bits(gb, 2);
358 5830 fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0]));
359 5830 r->luma_vlc = 2;
360 }else{
361
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 1810 if(!r->rv30){
362
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 467 if(!get_bits1(gb))
363 ✗ av_log(s->avctx, AV_LOG_ERROR, "Need DQUANT\n");
364 }
365 1810 s->current_picture_ptr->mb_type[mb_pos] = MB_TYPE_INTRA;
366 1810 r->block_type = RV34_MB_TYPE_INTRA;
367
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 1810 if(r->decode_intra_types(r, gb, intra_types) < 0)
368 ✗ return -1;
369 1810 r->luma_vlc = 1;
370 }
371
372 7640 r->chroma_vlc = 0;
373 7640 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
374
375 7640 return rv34_decode_cbp(gb, r->cur_vlcs, r->is16);
376 }
377
378 /**
379 * Decode inter macroblock header and return CBP in case of success, -1 otherwise.
380 */
381 284640 static int rv34_decode_inter_mb_header(RV34DecContext *r, int8_t *intra_types)
382 {
383 284640 MpegEncContext *s = &r->s;
384 284640 GetBitContext *gb = &s->gb;
385 284640 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
386 int i, t;
387
388 284640 r->block_type = r->decode_mb_info(r);
389
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 284640 if(r->block_type == -1)
390 ✗ return -1;
391 284640 s->current_picture_ptr->mb_type[mb_pos] = rv34_mb_type_to_lavc[r->block_type];
392 284640 r->mb_type[mb_pos] = r->block_type;
393
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 284640 if(r->block_type == RV34_MB_SKIP){
394
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 163091 if(s->pict_type == AV_PICTURE_TYPE_P)
395 31305 r->mb_type[mb_pos] = RV34_MB_P_16x16;
396
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 163091 if(s->pict_type == AV_PICTURE_TYPE_B)
397 131786 r->mb_type[mb_pos] = RV34_MB_B_DIRECT;
398 }
399 284640 r->is16 = !!IS_INTRA16x16(s->current_picture_ptr->mb_type[mb_pos]);
400
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 284640 if (rv34_decode_mv(r, r->block_type) < 0)
401 ✗ return -1;
402
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 284640 if(r->block_type == RV34_MB_SKIP){
403 163091 fill_rectangle(intra_types, 4, 4, r->intra_types_stride, 0, sizeof(intra_types[0]));
404 163091 return 0;
405 }
406 121549 r->chroma_vlc = 1;
407 121549 r->luma_vlc = 0;
408
409
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 121549 if(IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])){
410
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 24277 if(r->is16){
411 10976 t = get_bits(gb, 2);
412 10976 fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0]));
413 10976 r->luma_vlc = 2;
414 }else{
415
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 13301 if(r->decode_intra_types(r, gb, intra_types) < 0)
416 ✗ return -1;
417 13301 r->luma_vlc = 1;
418 }
419 24277 r->chroma_vlc = 0;
420 24277 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
421 }else{
422
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 1653624 for(i = 0; i < 16; i++)
423 1556352 intra_types[(i & 3) + (i>>2) * r->intra_types_stride] = 0;
424 97272 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1);
425
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 97272 if(r->mb_type[mb_pos] == RV34_MB_P_MIX16x16){
426 547 r->is16 = 1;
427 547 r->chroma_vlc = 1;
428 547 r->luma_vlc = 2;
429 547 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
430 }
431 }
432
433 121549 return rv34_decode_cbp(gb, r->cur_vlcs, r->is16);
434 }
435
436 /** @} */ //bitstream functions
437
438 /**
439 * @name motion vector related code (prediction, reconstruction, motion compensation)
440 * @{
441 */
442
443 /** macroblock partition width in 8x8 blocks */
444 static const uint8_t part_sizes_w[RV34_MB_TYPES] = { 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 2 };
445
446 /** macroblock partition height in 8x8 blocks */
447 static const uint8_t part_sizes_h[RV34_MB_TYPES] = { 2, 2, 2, 1, 2, 2, 2, 2, 1, 2, 2, 2 };
448
449 /** availability index for subblocks */
450 static const uint8_t avail_indexes[4] = { 6, 7, 10, 11 };
451
452 /**
453 * motion vector prediction
454 *
455 * Motion prediction performed for the block by using median prediction of
456 * motion vectors from the left, top and right top blocks but in corner cases
457 * some other vectors may be used instead.
458 */
459 42620 static void rv34_pred_mv(RV34DecContext *r, int block_type, int subblock_no, int dmv_no)
460 {
461 42620 MpegEncContext *s = &r->s;
462 42620 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
463 42620 int A[2] = {0}, B[2], C[2];
464 int i, j;
465 int mx, my;
466 42620 int* avail = r->avail_cache + avail_indexes[subblock_no];
467 42620 int c_off = part_sizes_w[block_type];
468
469 42620 mv_pos += (subblock_no & 1) + (subblock_no >> 1)*s->b8_stride;
470
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 42620 if(subblock_no == 3)
471 4526 c_off = -1;
472
473
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 42620 if(avail[-1]){
474 41140 A[0] = s->current_picture_ptr->motion_val[0][mv_pos-1][0];
475 41140 A[1] = s->current_picture_ptr->motion_val[0][mv_pos-1][1];
476 }
477
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 42620 if(avail[-4]){
478 30363 B[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][0];
479 30363 B[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][1];
480 }else{
481 12257 B[0] = A[0];
482 12257 B[1] = A[1];
483 }
484
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 42620 if(!avail[c_off-4]){
485
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 13924 if(avail[-4] && (avail[-1] || r->rv30)){
486 1813 C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][0];
487 1813 C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][1];
488 }else{
489 12111 C[0] = A[0];
490 12111 C[1] = A[1];
491 }
492 }else{
493 28696 C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+c_off][0];
494 28696 C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+c_off][1];
495 }
496 42620 mx = mid_pred(A[0], B[0], C[0]);
497 42620 my = mid_pred(A[1], B[1], C[1]);
498 42620 mx += r->dmv[dmv_no][0];
499 42620 my += r->dmv[dmv_no][1];
500
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 107064 for(j = 0; j < part_sizes_h[block_type]; j++){
501
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 165336 for(i = 0; i < part_sizes_w[block_type]; i++){
502 100892 s->current_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][0] = mx;
503 100892 s->current_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][1] = my;
504 }
505 }
506 42620 }
507
508 #define GET_PTS_DIFF(a, b) (((a) - (b) + 8192) & 0x1FFF)
509
510 /**
511 * Calculate motion vector component that should be added for direct blocks.
512 */
513 802736 static int calc_add_mv(RV34DecContext *r, int dir, int val)
514 {
515
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 802736 int mul = dir ? -r->mv_weight2 : r->mv_weight1;
516
517 802736 return (int)(val * (SUINT)mul + 0x2000) >> 14;
518 }
519
520 /**
521 * Predict motion vector for B-frame macroblock.
522 */
523 47002 static inline void rv34_pred_b_vector(int A[2], int B[2], int C[2],
524 int A_avail, int B_avail, int C_avail,
525 int *mx, int *my)
526 {
527
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 47002 if(A_avail + B_avail + C_avail != 3){
528 34307 *mx = A[0] + B[0] + C[0];
529 34307 *my = A[1] + B[1] + C[1];
530
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 34307 if(A_avail + B_avail + C_avail == 2){
531 11581 *mx /= 2;
532 11581 *my /= 2;
533 }
534 }else{
535 12695 *mx = mid_pred(A[0], B[0], C[0]);
536 12695 *my = mid_pred(A[1], B[1], C[1]);
537 }
538 47002 }
539
540 /**
541 * motion vector prediction for B-frames
542 */
543 47002 static void rv34_pred_mv_b(RV34DecContext *r, int block_type, int dir)
544 {
545 47002 MpegEncContext *s = &r->s;
546 47002 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
547 47002 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
548 47002 int A[2] = { 0 }, B[2] = { 0 }, C[2] = { 0 };
549 47002 int has_A = 0, has_B = 0, has_C = 0;
550 int mx, my;
551 int i, j;
552 47002 Picture *cur_pic = s->current_picture_ptr;
553
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 47002 const int mask = dir ? MB_TYPE_L1 : MB_TYPE_L0;
554 47002 int type = cur_pic->mb_type[mb_pos];
555
556
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 47002 if((r->avail_cache[6-1] & type) & mask){
557 29561 A[0] = cur_pic->motion_val[dir][mv_pos - 1][0];
558 29561 A[1] = cur_pic->motion_val[dir][mv_pos - 1][1];
559 29561 has_A = 1;
560 }
561
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 47002 if((r->avail_cache[6-4] & type) & mask){
562 24041 B[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride][0];
563 24041 B[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride][1];
564 24041 has_B = 1;
565 }
566
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 47002 if(r->avail_cache[6-4] && (r->avail_cache[6-2] & type) & mask){
567 21963 C[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride + 2][0];
568 21963 C[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride + 2][1];
569 21963 has_C = 1;
570
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 25039 }else if((s->mb_x+1) == s->mb_width && (r->avail_cache[6-5] & type) & mask){
571 386 C[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride - 1][0];
572 386 C[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride - 1][1];
573 386 has_C = 1;
574 }
575
576 47002 rv34_pred_b_vector(A, B, C, has_A, has_B, has_C, &mx, &my);
577
578 47002 mx += r->dmv[dir][0];
579 47002 my += r->dmv[dir][1];
580
581
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 141006 for(j = 0; j < 2; j++){
582
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 282012 for(i = 0; i < 2; i++){
583 188008 cur_pic->motion_val[dir][mv_pos + i + j*s->b8_stride][0] = mx;
584 188008 cur_pic->motion_val[dir][mv_pos + i + j*s->b8_stride][1] = my;
585 }
586 }
587
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 47002 if(block_type == RV34_MB_B_BACKWARD || block_type == RV34_MB_B_FORWARD){
588 28476 ZERO8x2(cur_pic->motion_val[!dir][mv_pos], s->b8_stride);
589 }
590 47002 }
591
592 /**
593 * motion vector prediction - RV3 version
594 */
595 9134 static void rv34_pred_mv_rv3(RV34DecContext *r, int block_type, int dir)
596 {
597 9134 MpegEncContext *s = &r->s;
598 9134 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
599 9134 int A[2] = {0}, B[2], C[2];
600 int i, j, k;
601 int mx, my;
602 9134 int* avail = r->avail_cache + avail_indexes[0];
603
604
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 9134 if(avail[-1]){
605 8666 A[0] = s->current_picture_ptr->motion_val[0][mv_pos - 1][0];
606 8666 A[1] = s->current_picture_ptr->motion_val[0][mv_pos - 1][1];
607 }
608
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 9134 if(avail[-4]){
609 8618 B[0] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride][0];
610 8618 B[1] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride][1];
611 }else{
612 516 B[0] = A[0];
613 516 B[1] = A[1];
614 }
615
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 9134 if(!avail[-4 + 2]){
616
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 950 if(avail[-4] && (avail[-1])){
617 434 C[0] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride - 1][0];
618 434 C[1] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride - 1][1];
619 }else{
620 516 C[0] = A[0];
621 516 C[1] = A[1];
622 }
623 }else{
624 8184 C[0] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride + 2][0];
625 8184 C[1] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride + 2][1];
626 }
627 9134 mx = mid_pred(A[0], B[0], C[0]);
628 9134 my = mid_pred(A[1], B[1], C[1]);
629 9134 mx += r->dmv[0][0];
630 9134 my += r->dmv[0][1];
631
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 27402 for(j = 0; j < 2; j++){
632
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633
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 109608 for(k = 0; k < 2; k++){
634 73072 s->current_picture_ptr->motion_val[k][mv_pos + i + j*s->b8_stride][0] = mx;
635 73072 s->current_picture_ptr->motion_val[k][mv_pos + i + j*s->b8_stride][1] = my;
636 }
637 }
638 }
639 9134 }
640
641 static const int chroma_coeffs[3] = { 0, 3, 5 };
642
643 /**
644 * generic motion compensation function
645 *
646 * @param r decoder context
647 * @param block_type type of the current block
648 * @param xoff horizontal offset from the start of the current block
649 * @param yoff vertical offset from the start of the current block
650 * @param mv_off offset to the motion vector information
651 * @param width width of the current partition in 8x8 blocks
652 * @param height height of the current partition in 8x8 blocks
653 * @param dir motion compensation direction (i.e. from the last or the next reference frame)
654 * @param thirdpel motion vectors are specified in 1/3 of pixel
655 * @param qpel_mc a set of functions used to perform luma motion compensation
656 * @param chroma_mc a set of functions used to perform chroma motion compensation
657 */
658 511743 static inline void rv34_mc(RV34DecContext *r, const int block_type,
659 const int xoff, const int yoff, int mv_off,
660 const int width, const int height, int dir,
661 const int thirdpel, int weighted,
662 qpel_mc_func (*qpel_mc)[16],
663 h264_chroma_mc_func (*chroma_mc))
664 {
665 511743 MpegEncContext *s = &r->s;
666 uint8_t *Y, *U, *V, *srcY, *srcU, *srcV;
667 int dxy, mx, my, umx, umy, lx, ly, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
668 511743 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride + mv_off;
669 511743 int is16x16 = 1;
670 511743 int emu = 0;
671
672
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 511743 if(thirdpel){
673 int chroma_mx, chroma_my;
674 127708 mx = (s->current_picture_ptr->motion_val[dir][mv_pos][0] + (3 << 24)) / 3 - (1 << 24);
675 127708 my = (s->current_picture_ptr->motion_val[dir][mv_pos][1] + (3 << 24)) / 3 - (1 << 24);
676 127708 lx = (s->current_picture_ptr->motion_val[dir][mv_pos][0] + (3 << 24)) % 3;
677 127708 ly = (s->current_picture_ptr->motion_val[dir][mv_pos][1] + (3 << 24)) % 3;
678 127708 chroma_mx = s->current_picture_ptr->motion_val[dir][mv_pos][0] / 2;
679 127708 chroma_my = s->current_picture_ptr->motion_val[dir][mv_pos][1] / 2;
680 127708 umx = (chroma_mx + (3 << 24)) / 3 - (1 << 24);
681 127708 umy = (chroma_my + (3 << 24)) / 3 - (1 << 24);
682 127708 uvmx = chroma_coeffs[(chroma_mx + (3 << 24)) % 3];
683 127708 uvmy = chroma_coeffs[(chroma_my + (3 << 24)) % 3];
684 }else{
685 int cx, cy;
686 384035 mx = s->current_picture_ptr->motion_val[dir][mv_pos][0] >> 2;
687 384035 my = s->current_picture_ptr->motion_val[dir][mv_pos][1] >> 2;
688 384035 lx = s->current_picture_ptr->motion_val[dir][mv_pos][0] & 3;
689 384035 ly = s->current_picture_ptr->motion_val[dir][mv_pos][1] & 3;
690 384035 cx = s->current_picture_ptr->motion_val[dir][mv_pos][0] / 2;
691 384035 cy = s->current_picture_ptr->motion_val[dir][mv_pos][1] / 2;
692 384035 umx = cx >> 2;
693 384035 umy = cy >> 2;
694 384035 uvmx = (cx & 3) << 1;
695 384035 uvmy = (cy & 3) << 1;
696 //due to some flaw RV40 uses the same MC compensation routine for H2V2 and H3V3
697
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 384035 if(uvmx == 6 && uvmy == 6)
698 7377 uvmx = uvmy = 4;
699 }
700
701
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 511743 if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME)) {
702 /* wait for the referenced mb row to be finished */
703 ✗ int mb_row = s->mb_y + ((yoff + my + 5 + 8 * height) >> 4);
704 ✗ ThreadFrame *f = dir ? &s->next_picture_ptr->tf : &s->last_picture_ptr->tf;
705 ✗ ff_thread_await_progress(f, mb_row, 0);
706 }
707
708 511743 dxy = ly*4 + lx;
709
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 511743 srcY = dir ? s->next_picture_ptr->f->data[0] : s->last_picture_ptr->f->data[0];
710
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 511743 srcU = dir ? s->next_picture_ptr->f->data[1] : s->last_picture_ptr->f->data[1];
711
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 511743 srcV = dir ? s->next_picture_ptr->f->data[2] : s->last_picture_ptr->f->data[2];
712 511743 src_x = s->mb_x * 16 + xoff + mx;
713 511743 src_y = s->mb_y * 16 + yoff + my;
714 511743 uvsrc_x = s->mb_x * 8 + (xoff >> 1) + umx;
715 511743 uvsrc_y = s->mb_y * 8 + (yoff >> 1) + umy;
716 511743 srcY += src_y * s->linesize + src_x;
717 511743 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
718 511743 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
719
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 511743 if(s->h_edge_pos - (width << 3) < 6 || s->v_edge_pos - (height << 3) < 6 ||
720
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 511743 (unsigned)(src_x - !!lx*2) > s->h_edge_pos - !!lx*2 - (width <<3) - 4 ||
721
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 495678 (unsigned)(src_y - !!ly*2) > s->v_edge_pos - !!ly*2 - (height<<3) - 4) {
722 43652 srcY -= 2 + 2*s->linesize;
723 43652 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, srcY,
724 s->linesize, s->linesize,
725 43652 (width << 3) + 6, (height << 3) + 6,
726 src_x - 2, src_y - 2,
727 s->h_edge_pos, s->v_edge_pos);
728 43652 srcY = s->sc.edge_emu_buffer + 2 + 2*s->linesize;
729 43652 emu = 1;
730 }
731
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 511743 if(!weighted){
732 230597 Y = s->dest[0] + xoff + yoff *s->linesize;
733 230597 U = s->dest[1] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
734 230597 V = s->dest[2] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
735 }else{
736 281146 Y = r->tmp_b_block_y [dir] + xoff + yoff *s->linesize;
737 281146 U = r->tmp_b_block_uv[dir*2] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
738 281146 V = r->tmp_b_block_uv[dir*2+1] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
739 }
740
741
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 511743 if(block_type == RV34_MB_P_16x8){
742 2692 qpel_mc[1][dxy](Y, srcY, s->linesize);
743 2692 Y += 8;
744 2692 srcY += 8;
745
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 509051 }else if(block_type == RV34_MB_P_8x16){
746 4946 qpel_mc[1][dxy](Y, srcY, s->linesize);
747 4946 Y += 8 * s->linesize;
748 4946 srcY += 8 * s->linesize;
749 }
750
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 511743 is16x16 = (block_type != RV34_MB_P_8x8) && (block_type != RV34_MB_P_16x8) && (block_type != RV34_MB_P_8x16);
751
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 511743 qpel_mc[!is16x16][dxy](Y, srcY, s->linesize);
752
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 511743 if (emu) {
753 43652 uint8_t *uvbuf = s->sc.edge_emu_buffer;
754
755 43652 s->vdsp.emulated_edge_mc(uvbuf, srcU,
756 s->uvlinesize, s->uvlinesize,
757 43652 (width << 2) + 1, (height << 2) + 1,
758 uvsrc_x, uvsrc_y,
759 43652 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
760 43652 srcU = uvbuf;
761 43652 uvbuf += 9*s->uvlinesize;
762
763 43652 s->vdsp.emulated_edge_mc(uvbuf, srcV,
764 s->uvlinesize, s->uvlinesize,
765 43652 (width << 2) + 1, (height << 2) + 1,
766 uvsrc_x, uvsrc_y,
767 43652 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
768 43652 srcV = uvbuf;
769 }
770 511743 chroma_mc[2-width] (U, srcU, s->uvlinesize, height*4, uvmx, uvmy);
771 511743 chroma_mc[2-width] (V, srcV, s->uvlinesize, height*4, uvmx, uvmy);
772 511743 }
773
774 111535 static void rv34_mc_1mv(RV34DecContext *r, const int block_type,
775 const int xoff, const int yoff, int mv_off,
776 const int width, const int height, int dir)
777 {
778 111535 rv34_mc(r, block_type, xoff, yoff, mv_off, width, height, dir, r->rv30, 0,
779 111535 r->rdsp.put_pixels_tab,
780 111535 r->rdsp.put_chroma_pixels_tab);
781 111535 }
782
783 115964 static void rv4_weight(RV34DecContext *r)
784 {
785 115964 r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][0](r->s.dest[0],
786 r->tmp_b_block_y[0],
787 r->tmp_b_block_y[1],
788 r->weight1,
789 r->weight2,
790 r->s.linesize);
791 115964 r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][1](r->s.dest[1],
792 r->tmp_b_block_uv[0],
793 r->tmp_b_block_uv[2],
794 r->weight1,
795 r->weight2,
796 r->s.uvlinesize);
797 115964 r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][1](r->s.dest[2],
798 r->tmp_b_block_uv[1],
799 r->tmp_b_block_uv[3],
800 r->weight1,
801 r->weight2,
802 r->s.uvlinesize);
803 115964 }
804
805 154932 static void rv34_mc_2mv(RV34DecContext *r, const int block_type)
806 {
807
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 154932 int weighted = !r->rv30 && block_type != RV34_MB_B_BIDIR && r->weight1 != 8192;
808
809 154932 rv34_mc(r, block_type, 0, 0, 0, 2, 2, 0, r->rv30, weighted,
810 154932 r->rdsp.put_pixels_tab,
811 154932 r->rdsp.put_chroma_pixels_tab);
812
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 154932 if(!weighted){
813 47171 rv34_mc(r, block_type, 0, 0, 0, 2, 2, 1, r->rv30, 0,
814 47171 r->rdsp.avg_pixels_tab,
815 47171 r->rdsp.avg_chroma_pixels_tab);
816 }else{
817 107761 rv34_mc(r, block_type, 0, 0, 0, 2, 2, 1, r->rv30, 1,
818 107761 r->rdsp.put_pixels_tab,
819 107761 r->rdsp.put_chroma_pixels_tab);
820 107761 rv4_weight(r);
821 }
822 154932 }
823
824 11293 static void rv34_mc_2mv_skip(RV34DecContext *r)
825 {
826 int i, j;
827
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 11293 int weighted = !r->rv30 && r->weight1 != 8192;
828
829
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 33879 for(j = 0; j < 2; j++)
830
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 67758 for(i = 0; i < 2; i++){
831 45172 rv34_mc(r, RV34_MB_P_8x8, i*8, j*8, i+j*r->s.b8_stride, 1, 1, 0, r->rv30,
832 weighted,
833 45172 r->rdsp.put_pixels_tab,
834 45172 r->rdsp.put_chroma_pixels_tab);
835
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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,
836 weighted,
837 weighted ? r->rdsp.put_pixels_tab : r->rdsp.avg_pixels_tab,
838 weighted ? r->rdsp.put_chroma_pixels_tab : r->rdsp.avg_chroma_pixels_tab);
839 }
840
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 11293 if(weighted)
841 8203 rv4_weight(r);
842 11293 }
843
844 /** number of motion vectors in each macroblock type */
845 static const int num_mvs[RV34_MB_TYPES] = { 0, 0, 1, 4, 1, 1, 0, 0, 2, 2, 2, 1 };
846
847 /**
848 * Decode motion vector differences
849 * and perform motion vector reconstruction and motion compensation.
850 */
851 284640 static int rv34_decode_mv(RV34DecContext *r, int block_type)
852 {
853 284640 MpegEncContext *s = &r->s;
854 284640 GetBitContext *gb = &s->gb;
855 int i, j, k, l;
856 284640 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
857 int next_bt;
858
859 284640 memset(r->dmv, 0, sizeof(r->dmv));
860
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 383396 for(i = 0; i < num_mvs[block_type]; i++){
861 98756 r->dmv[i][0] = get_interleaved_se_golomb(gb);
862 98756 r->dmv[i][1] = get_interleaved_se_golomb(gb);
863
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 98756 if (r->dmv[i][0] == INVALID_VLC ||
864
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 98756 r->dmv[i][1] == INVALID_VLC) {
865 ✗ r->dmv[i][0] = r->dmv[i][1] = 0;
866 ✗ return AVERROR_INVALIDDATA;
867 }
868 }
869
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 284640 switch(block_type){
870 24277 case RV34_MB_TYPE_INTRA:
871 case RV34_MB_TYPE_INTRA16x16:
872 24277 ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
873 24277 return 0;
874 163091 case RV34_MB_SKIP:
875
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 163091 if(s->pict_type == AV_PICTURE_TYPE_P){
876 31305 ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
877 31305 rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0);
878 31305 break;
879 }
880 case RV34_MB_B_DIRECT:
881 //surprisingly, it uses motion scheme from next reference frame
882 /* wait for the current mb row to be finished */
883
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 156962 if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME))
884 ✗ ff_thread_await_progress(&s->next_picture_ptr->tf, FFMAX(0, s->mb_y-1), 0);
885
886 156962 next_bt = s->next_picture_ptr->mb_type[s->mb_x + s->mb_y * s->mb_stride];
887
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 156962 if(IS_INTRA(next_bt) || IS_SKIP(next_bt)){
888 106791 ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
889 106791 ZERO8x2(s->current_picture_ptr->motion_val[1][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
890 }else
891
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 150513 for(j = 0; j < 2; j++)
892
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 301026 for(i = 0; i < 2; i++)
893
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 602052 for(k = 0; k < 2; k++)
894
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 1204104 for(l = 0; l < 2; l++)
895 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]);
896
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 156962 if(!(IS_16X8(next_bt) || IS_8X16(next_bt) || IS_8X8(next_bt))) //we can use whole macroblock MC
897 145669 rv34_mc_2mv(r, block_type);
898 else
899 11293 rv34_mc_2mv_skip(r);
900 156962 ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
901 156962 break;
902 16878 case RV34_MB_P_16x16:
903 case RV34_MB_P_MIX16x16:
904 16878 rv34_pred_mv(r, block_type, 0, 0);
905 16878 rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0);
906 16878 break;
907 37610 case RV34_MB_B_FORWARD:
908 case RV34_MB_B_BACKWARD:
909 37610 r->dmv[1][0] = r->dmv[0][0];
910 37610 r->dmv[1][1] = r->dmv[0][1];
911
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 37610 if(r->rv30)
912 9134 rv34_pred_mv_rv3(r, block_type, block_type == RV34_MB_B_BACKWARD);
913 else
914 28476 rv34_pred_mv_b (r, block_type, block_type == RV34_MB_B_BACKWARD);
915 37610 rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, block_type == RV34_MB_B_BACKWARD);
916 37610 break;
917 3819 case RV34_MB_P_16x8:
918 case RV34_MB_P_8x16:
919 3819 rv34_pred_mv(r, block_type, 0, 0);
920
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 3819 rv34_pred_mv(r, block_type, 1 + (block_type == RV34_MB_P_16x8), 1);
921
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 3819 if(block_type == RV34_MB_P_16x8){
922 1346 rv34_mc_1mv(r, block_type, 0, 0, 0, 2, 1, 0);
923 1346 rv34_mc_1mv(r, block_type, 0, 8, s->b8_stride, 2, 1, 0);
924 }
925
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 3819 if(block_type == RV34_MB_P_8x16){
926 2473 rv34_mc_1mv(r, block_type, 0, 0, 0, 1, 2, 0);
927 2473 rv34_mc_1mv(r, block_type, 8, 0, 1, 1, 2, 0);
928 }
929 3819 break;
930 9263 case RV34_MB_B_BIDIR:
931 9263 rv34_pred_mv_b (r, block_type, 0);
932 9263 rv34_pred_mv_b (r, block_type, 1);
933 9263 rv34_mc_2mv (r, block_type);
934 9263 break;
935 4526 case RV34_MB_P_8x8:
936
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 22630 for(i=0;i< 4;i++){
937 18104 rv34_pred_mv(r, block_type, i, i);
938 18104 rv34_mc_1mv (r, block_type, (i&1)<<3, (i&2)<<2, (i&1)+(i>>1)*s->b8_stride, 1, 1, 0);
939 }
940 4526 break;
941 }
942
943 260363 return 0;
944 }
945 /** @} */ // mv group
946
947 /**
948 * @name Macroblock reconstruction functions
949 * @{
950 */
951 /** mapping of RV30/40 intra prediction types to standard H.264 types */
952 static const int ittrans[9] = {
953 DC_PRED, VERT_PRED, HOR_PRED, DIAG_DOWN_RIGHT_PRED, DIAG_DOWN_LEFT_PRED,
954 VERT_RIGHT_PRED, VERT_LEFT_PRED, HOR_UP_PRED, HOR_DOWN_PRED,
955 };
956
957 /** mapping of RV30/40 intra 16x16 prediction types to standard H.264 types */
958 static const int ittrans16[4] = {
959 DC_PRED8x8, VERT_PRED8x8, HOR_PRED8x8, PLANE_PRED8x8,
960 };
961
962 /**
963 * Perform 4x4 intra prediction.
964 */
965 362664 static void rv34_pred_4x4_block(RV34DecContext *r, uint8_t *dst, int stride, int itype, int up, int left, int down, int right)
966 {
967 362664 uint8_t *prev = dst - stride + 4;
968 uint32_t topleft;
969
970
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 362664 if(!up && !left)
971 906 itype = DC_128_PRED;
972
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 361758 else if(!up){
973
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 43702 if(itype == VERT_PRED) itype = HOR_PRED;
974
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 43702 if(itype == DC_PRED) itype = LEFT_DC_PRED;
975
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 318056 }else if(!left){
976
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 5318 if(itype == HOR_PRED) itype = VERT_PRED;
977
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 5318 if(itype == DC_PRED) itype = TOP_DC_PRED;
978
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 5318 if(itype == DIAG_DOWN_LEFT_PRED) itype = DIAG_DOWN_LEFT_PRED_RV40_NODOWN;
979 }
980
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 362664 if(!down){
981
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 289443 if(itype == DIAG_DOWN_LEFT_PRED) itype = DIAG_DOWN_LEFT_PRED_RV40_NODOWN;
982
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 289443 if(itype == HOR_UP_PRED) itype = HOR_UP_PRED_RV40_NODOWN;
983
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 289443 if(itype == VERT_LEFT_PRED) itype = VERT_LEFT_PRED_RV40_NODOWN;
984 }
985
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 362664 if(!right && up){
986 76047 topleft = dst[-stride + 3] * 0x01010101u;
987 76047 prev = (uint8_t*)&topleft;
988 }
989 362664 r->h.pred4x4[itype](dst, prev, stride);
990 362664 }
991
992 33612 static inline int adjust_pred16(int itype, int up, int left)
993 {
994
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 33612 if(!up && !left)
995 54 itype = DC_128_PRED8x8;
996
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 33558 else if(!up){
997
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 5754 if(itype == PLANE_PRED8x8)itype = HOR_PRED8x8;
998
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 5754 if(itype == VERT_PRED8x8) itype = HOR_PRED8x8;
999
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 5754 if(itype == DC_PRED8x8) itype = LEFT_DC_PRED8x8;
1000
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 27804 }else if(!left){
1001
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 836 if(itype == PLANE_PRED8x8)itype = VERT_PRED8x8;
1002
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 836 if(itype == HOR_PRED8x8) itype = VERT_PRED8x8;
1003
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 836 if(itype == DC_PRED8x8) itype = TOP_DC_PRED8x8;
1004 }
1005 33612 return itype;
1006 }
1007
1008 704977 static inline void rv34_process_block(RV34DecContext *r,
1009 uint8_t *pdst, int stride,
1010 int fc, int sc, int q_dc, int q_ac)
1011 {
1012 704977 MpegEncContext *s = &r->s;
1013 704977 int16_t *ptr = s->block[0];
1014 704977 int has_ac = rv34_decode_block(ptr, &s->gb, r->cur_vlcs,
1015 fc, sc, q_dc, q_ac, q_ac);
1016
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 704977 if(has_ac){
1017 350745 r->rdsp.rv34_idct_add(pdst, stride, ptr);
1018 }else{
1019 354232 r->rdsp.rv34_idct_dc_add(pdst, stride, ptr[0]);
1020 354232 ptr[0] = 0;
1021 }
1022 704977 }
1023
1024 16806 static void rv34_output_i16x16(RV34DecContext *r, int8_t *intra_types, int cbp)
1025 {
1026 16806 LOCAL_ALIGNED_16(int16_t, block16, [16]);
1027 16806 MpegEncContext *s = &r->s;
1028 16806 GetBitContext *gb = &s->gb;
1029 16806 int q_dc = rv34_qscale_tab[ r->luma_dc_quant_i[s->qscale] ],
1030 16806 q_ac = rv34_qscale_tab[s->qscale];
1031 16806 uint8_t *dst = s->dest[0];
1032 16806 int16_t *ptr = s->block[0];
1033 int i, j, itype, has_ac;
1034
1035 16806 memset(block16, 0, 16 * sizeof(*block16));
1036
1037 16806 has_ac = rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0, q_dc, q_dc, q_ac);
1038
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 16806 if(has_ac)
1039 7912 r->rdsp.rv34_inv_transform(block16);
1040 else
1041 8894 r->rdsp.rv34_inv_transform_dc(block16);
1042
1043 16806 itype = ittrans16[intra_types[0]];
1044 16806 itype = adjust_pred16(itype, r->avail_cache[6-4], r->avail_cache[6-1]);
1045 16806 r->h.pred16x16[itype](dst, s->linesize);
1046
1047
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 84030 for(j = 0; j < 4; j++){
1048
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 336120 for(i = 0; i < 4; i++, cbp >>= 1){
1049 268896 int dc = block16[i + j*4];
1050
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 268896 if(cbp & 1){
1052 14262 has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac);
1053 }else
1054 254634 has_ac = 0;
1055
1056
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 268896 if(has_ac){
1057 14262 ptr[0] = dc;
1058 14262 r->rdsp.rv34_idct_add(dst+4*i, s->linesize, ptr);
1059 }else
1060 254634 r->rdsp.rv34_idct_dc_add(dst+4*i, s->linesize, dc);
1061 }
1062
1063 67224 dst += 4*s->linesize;
1064 }
1065
1066 16806 itype = ittrans16[intra_types[0]];
1067
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 16806 if(itype == PLANE_PRED8x8) itype = DC_PRED8x8;
1068 16806 itype = adjust_pred16(itype, r->avail_cache[6-4], r->avail_cache[6-1]);
1069
1070 16806 q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]];
1071 16806 q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]];
1072
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 50418 for(j = 1; j < 3; j++){
1074 33612 dst = s->dest[j];
1075 33612 r->h.pred8x8[itype](dst, s->uvlinesize);
1076
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 168060 for(i = 0; i < 4; i++, cbp >>= 1){
1077 uint8_t *pdst;
1078
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 134448 if(!(cbp & 1)) continue;
1079 24665 pdst = dst + (i&1)*4 + (i&2)*2*s->uvlinesize;
1080
1081 24665 rv34_process_block(r, pdst, s->uvlinesize,
1082 r->chroma_vlc, 1, q_dc, q_ac);
1083 }
1084 }
1085 16806 }
1086
1087 15111 static void rv34_output_intra(RV34DecContext *r, int8_t *intra_types, int cbp)
1088 {
1089 15111 MpegEncContext *s = &r->s;
1090 15111 uint8_t *dst = s->dest[0];
1091 15111 int avail[6*8] = {0};
1092 int i, j, k;
1093 int idx, q_ac, q_dc;
1094
1095 // Set neighbour information.
1096
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 15111 if(r->avail_cache[1])
1097 8914 avail[0] = 1;
1098
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 15111 if(r->avail_cache[2])
1099 9535 avail[1] = avail[2] = 1;
1100
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 15111 if(r->avail_cache[3])
1101 9535 avail[3] = avail[4] = 1;
1102
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 15111 if(r->avail_cache[4])
1103 9499 avail[5] = 1;
1104
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 15111 if(r->avail_cache[5])
1105 14333 avail[8] = avail[16] = 1;
1106
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 15111 if(r->avail_cache[9])
1107 14333 avail[24] = avail[32] = 1;
1108
1109 15111 q_ac = rv34_qscale_tab[s->qscale];
1110
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 75555 for(j = 0; j < 4; j++){
1111 60444 idx = 9 + j*8;
1112
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 302220 for(i = 0; i < 4; i++, cbp >>= 1, dst += 4, idx++){
1113 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]);
1114 241776 avail[idx] = 1;
1115
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 241776 if(!(cbp & 1)) continue;
1116
1117 148411 rv34_process_block(r, dst, s->linesize,
1118 r->luma_vlc, 0, q_ac, q_ac);
1119 }
1120 60444 dst += s->linesize * 4 - 4*4;
1121 60444 intra_types += r->intra_types_stride;
1122 }
1123
1124 15111 intra_types -= r->intra_types_stride * 4;
1125
1126 15111 q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]];
1127 15111 q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]];
1128
1129
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 45333 for(k = 0; k < 2; k++){
1130 30222 dst = s->dest[1+k];
1131 30222 fill_rectangle(r->avail_cache + 6, 2, 2, 4, 0, 4);
1132
1133
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 90666 for(j = 0; j < 2; j++){
1134 60444 int* acache = r->avail_cache + 6 + j*4;
1135
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 181332 for(i = 0; i < 2; i++, cbp >>= 1, acache++){
1136 120888 int itype = ittrans[intra_types[i*2+j*2*r->intra_types_stride]];
1137
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 120888 rv34_pred_4x4_block(r, dst+4*i, s->uvlinesize, itype, acache[-4], acache[-1], !i && !j, acache[-3]);
1138 120888 acache[0] = 1;
1139
1140
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 120888 if(!(cbp&1)) continue;
1141
1142 71067 rv34_process_block(r, dst + 4*i, s->uvlinesize,
1143 r->chroma_vlc, 1, q_dc, q_ac);
1144 }
1145
1146 60444 dst += 4*s->uvlinesize;
1147 }
1148 }
1149 15111 }
1150
1151 2246368 static int is_mv_diff_gt_3(int16_t (*motion_val)[2], int step)
1152 {
1153 int d;
1154 2246368 d = motion_val[0][0] - motion_val[-step][0];
1155
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 2246368 if(d < -3 || d > 3)
1156 188252 return 1;
1157 2058116 d = motion_val[0][1] - motion_val[-step][1];
1158
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 2058116 if(d < -3 || d > 3)
1159 31852 return 1;
1160 2026264 return 0;
1161 }
1162
1163 284640 static int rv34_set_deblock_coef(RV34DecContext *r)
1164 {
1165 284640 MpegEncContext *s = &r->s;
1166 284640 int hmvmask = 0, vmvmask = 0, i, j;
1167 284640 int midx = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
1168 284640 int16_t (*motion_val)[2] = &s->current_picture_ptr->motion_val[0][midx];
1169
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 853920 for(j = 0; j < 16; j += 8){
1170
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 1707840 for(i = 0; i < 2; i++){
1171
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 1138560 if(is_mv_diff_gt_3(motion_val + i, 1))
1172 106472 vmvmask |= 0x11 << (j + i*2);
1173
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 1138560 if((j || s->mb_y) && is_mv_diff_gt_3(motion_val + i, s->b8_stride))
1174 113632 hmvmask |= 0x03 << (j + i*2);
1175 }
1176 569280 motion_val += s->b8_stride;
1177 }
1178
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 284640 if(s->first_slice_line)
1179 42347 hmvmask &= ~0x000F;
1180
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 284640 if(!s->mb_x)
1181 9120 vmvmask &= ~0x1111;
1182
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 284640 if(r->rv30){ //RV30 marks both subblocks on the edge for filtering
1183 68640 vmvmask |= (vmvmask & 0x4444) >> 1;
1184 68640 hmvmask |= (hmvmask & 0x0F00) >> 4;
1185
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 68640 if(s->mb_x)
1186 65520 r->deblock_coefs[s->mb_x - 1 + s->mb_y*s->mb_stride] |= (vmvmask & 0x1111) << 3;
1187
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 68640 if(!s->first_slice_line)
1188 61878 r->deblock_coefs[s->mb_x + (s->mb_y - 1)*s->mb_stride] |= (hmvmask & 0xF) << 12;
1189 }
1190 284640 return hmvmask | vmvmask;
1191 }
1192
1193 284640 static int rv34_decode_inter_macroblock(RV34DecContext *r, int8_t *intra_types)
1194 {
1195 284640 MpegEncContext *s = &r->s;
1196 284640 GetBitContext *gb = &s->gb;
1197 284640 uint8_t *dst = s->dest[0];
1198 284640 int16_t *ptr = s->block[0];
1199 284640 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1200 int cbp, cbp2;
1201 int q_dc, q_ac, has_ac;
1202 int i, j;
1203 int dist;
1204
1205 // Calculate which neighbours are available. Maybe it's worth optimizing too.
1206 284640 memset(r->avail_cache, 0, sizeof(r->avail_cache));
1207 284640 fill_rectangle(r->avail_cache + 6, 2, 2, 4, 1, 4);
1208 284640 dist = (s->mb_x - s->resync_mb_x) + (s->mb_y - s->resync_mb_y) * s->mb_width;
1209
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 284640 if(s->mb_x && dist)
1210 275017 r->avail_cache[5] =
1211 275017 r->avail_cache[9] = s->current_picture_ptr->mb_type[mb_pos - 1];
1212
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 284640 if(dist >= s->mb_width)
1213 242293 r->avail_cache[2] =
1214 242293 r->avail_cache[3] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride];
1215
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 284640 if(((s->mb_x+1) < s->mb_width) && dist >= s->mb_width - 1)
1216 234929 r->avail_cache[4] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride + 1];
1217
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 284640 if(s->mb_x && dist > s->mb_width)
1218 234004 r->avail_cache[1] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride - 1];
1219
1220 284640 s->qscale = r->si.quant;
1221 284640 cbp = cbp2 = rv34_decode_inter_mb_header(r, intra_types);
1222 284640 r->cbp_luma [mb_pos] = cbp;
1223 284640 r->cbp_chroma[mb_pos] = cbp >> 16;
1224 284640 r->deblock_coefs[mb_pos] = rv34_set_deblock_coef(r) | r->cbp_luma[mb_pos];
1225 284640 s->current_picture_ptr->qscale_table[mb_pos] = s->qscale;
1226
1227
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 284640 if(cbp == -1)
1228 ✗ return -1;
1229
1230
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 284640 if (IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])){
1231
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 24277 if(r->is16) rv34_output_i16x16(r, intra_types, cbp);
1232 13301 else rv34_output_intra(r, intra_types, cbp);
1233 24277 return 0;
1234 }
1235
1236
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 260363 if(r->is16){
1237 // Only for RV34_MB_P_MIX16x16
1238 547 LOCAL_ALIGNED_16(int16_t, block16, [16]);
1239 547 memset(block16, 0, 16 * sizeof(*block16));
1240 547 q_dc = rv34_qscale_tab[ r->luma_dc_quant_p[s->qscale] ];
1241 547 q_ac = rv34_qscale_tab[s->qscale];
1242
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 547 if (rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0, q_dc, q_dc, q_ac))
1243 266 r->rdsp.rv34_inv_transform(block16);
1244 else
1245 281 r->rdsp.rv34_inv_transform_dc(block16);
1246
1247 547 q_ac = rv34_qscale_tab[s->qscale];
1248
1249
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 2735 for(j = 0; j < 4; j++){
1250
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 10940 for(i = 0; i < 4; i++, cbp >>= 1){
1251 8752 int dc = block16[i + j*4];
1252
1253
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 8752 if(cbp & 1){
1254 6 has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac);
1255 }else
1256 8746 has_ac = 0;
1257
1258
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 8752 if(has_ac){
1259 6 ptr[0] = dc;
1260 6 r->rdsp.rv34_idct_add(dst+4*i, s->linesize, ptr);
1261 }else
1262 8746 r->rdsp.rv34_idct_dc_add(dst+4*i, s->linesize, dc);
1263 }
1264
1265 2188 dst += 4*s->linesize;
1266 }
1267
1268 547 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1);
1269 }else{
1270 259816 q_ac = rv34_qscale_tab[s->qscale];
1271
1272
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 1299080 for(j = 0; j < 4; j++){
1273
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 5196320 for(i = 0; i < 4; i++, cbp >>= 1){
1274
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 4157056 if(!(cbp & 1)) continue;
1275
1276 317078 rv34_process_block(r, dst + 4*i, s->linesize,
1277 r->luma_vlc, 0, q_ac, q_ac);
1278 }
1279 1039264 dst += 4*s->linesize;
1280 }
1281 }
1282
1283 260363 q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]];
1284 260363 q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]];
1285
1286
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 781089 for(j = 1; j < 3; j++){
1287 520726 dst = s->dest[j];
1288
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 2603630 for(i = 0; i < 4; i++, cbp >>= 1){
1289 uint8_t *pdst;
1290
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 2082904 if(!(cbp & 1)) continue;
1291 143756 pdst = dst + (i&1)*4 + (i&2)*2*s->uvlinesize;
1292
1293 143756 rv34_process_block(r, pdst, s->uvlinesize,
1294 r->chroma_vlc, 1, q_dc, q_ac);
1295 }
1296 }
1297
1298 260363 return 0;
1299 }
1300
1301 7640 static int rv34_decode_intra_macroblock(RV34DecContext *r, int8_t *intra_types)
1302 {
1303 7640 MpegEncContext *s = &r->s;
1304 int cbp, dist;
1305 7640 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1306
1307 // Calculate which neighbours are available. Maybe it's worth optimizing too.
1308 7640 memset(r->avail_cache, 0, sizeof(r->avail_cache));
1309 7640 fill_rectangle(r->avail_cache + 6, 2, 2, 4, 1, 4);
1310 7640 dist = (s->mb_x - s->resync_mb_x) + (s->mb_y - s->resync_mb_y) * s->mb_width;
1311
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 7640 if(s->mb_x && dist)
1312 7325 r->avail_cache[5] =
1313 7325 r->avail_cache[9] = s->current_picture_ptr->mb_type[mb_pos - 1];
1314
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 7640 if(dist >= s->mb_width)
1315 6133 r->avail_cache[2] =
1316 6133 r->avail_cache[3] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride];
1317
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 7640 if(((s->mb_x+1) < s->mb_width) && dist >= s->mb_width - 1)
1318 5928 r->avail_cache[4] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride + 1];
1319
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 7640 if(s->mb_x && dist > s->mb_width)
1320 5878 r->avail_cache[1] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride - 1];
1321
1322 7640 s->qscale = r->si.quant;
1323 7640 cbp = rv34_decode_intra_mb_header(r, intra_types);
1324 7640 r->cbp_luma [mb_pos] = cbp;
1325 7640 r->cbp_chroma[mb_pos] = cbp >> 16;
1326 7640 r->deblock_coefs[mb_pos] = 0xFFFF;
1327 7640 s->current_picture_ptr->qscale_table[mb_pos] = s->qscale;
1328
1329
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 7640 if(cbp == -1)
1330 ✗ return -1;
1331
1332
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 7640 if(r->is16){
1333 5830 rv34_output_i16x16(r, intra_types, cbp);
1334 5830 return 0;
1335 }
1336
1337 1810 rv34_output_intra(r, intra_types, cbp);
1338 1810 return 0;
1339 }
1340
1341 293665 static int check_slice_end(RV34DecContext *r, MpegEncContext *s)
1342 {
1343 int bits;
1344
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 293665 if(s->mb_y >= s->mb_height)
1345 526 return 1;
1346
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 293139 if(!s->mb_num_left)
1347 859 return 1;
1348
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 292280 if(r->s.mb_skip_run > 1)
1349 128319 return 0;
1350 163961 bits = get_bits_left(&s->gb);
1351
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 163961 if(bits <= 0 || (bits < 8 && !show_bits(&s->gb, bits)))
1352 ✗ return 1;
1353 163961 return 0;
1354 }
1355
1356
1357 9 static void rv34_decoder_free(RV34DecContext *r)
1358 {
1359 9 av_freep(&r->intra_types_hist);
1360 9 r->intra_types = NULL;
1361 9 av_freep(&r->tmp_b_block_base);
1362 9 av_freep(&r->mb_type);
1363 9 av_freep(&r->cbp_luma);
1364 9 av_freep(&r->cbp_chroma);
1365 9 av_freep(&r->deblock_coefs);
1366 9 }
1367
1368
1369 9 static int rv34_decoder_alloc(RV34DecContext *r)
1370 {
1371 9 r->intra_types_stride = r->s.mb_width * 4 + 4;
1372
1373 9 r->cbp_chroma = av_mallocz(r->s.mb_stride * r->s.mb_height *
1374 sizeof(*r->cbp_chroma));
1375 9 r->cbp_luma = av_mallocz(r->s.mb_stride * r->s.mb_height *
1376 sizeof(*r->cbp_luma));
1377 9 r->deblock_coefs = av_mallocz(r->s.mb_stride * r->s.mb_height *
1378 sizeof(*r->deblock_coefs));
1379 9 r->intra_types_hist = av_malloc(r->intra_types_stride * 4 * 2 *
1380 sizeof(*r->intra_types_hist));
1381 9 r->mb_type = av_mallocz(r->s.mb_stride * r->s.mb_height *
1382 sizeof(*r->mb_type));
1383
1384
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 9 if (!(r->cbp_chroma && r->cbp_luma && r->deblock_coefs &&
1385
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 9 r->intra_types_hist && r->mb_type)) {
1386 ✗ r->s.context_reinit = 1;
1387 ✗ rv34_decoder_free(r);
1388 ✗ return AVERROR(ENOMEM);
1389 }
1390
1391 9 r->intra_types = r->intra_types_hist + r->intra_types_stride * 4;
1392
1393 9 return 0;
1394 }
1395
1396
1397 ✗ static int rv34_decoder_realloc(RV34DecContext *r)
1398 {
1399 ✗ rv34_decoder_free(r);
1400 ✗ return rv34_decoder_alloc(r);
1401 }
1402
1403
1404 1385 static int rv34_decode_slice(RV34DecContext *r, int end, const uint8_t* buf, int buf_size)
1405 {
1406 1385 MpegEncContext *s = &r->s;
1407 1385 GetBitContext *gb = &s->gb;
1408 int mb_pos, slice_type;
1409 int res;
1410
1411 1385 init_get_bits(&r->s.gb, buf, buf_size*8);
1412 1385 res = r->parse_slice_header(r, gb, &r->si);
1413
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 1385 if(res < 0){
1414 ✗ av_log(s->avctx, AV_LOG_ERROR, "Incorrect or unknown slice header\n");
1415 ✗ return -1;
1416 }
1417
1418
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 1385 slice_type = r->si.type ? r->si.type : AV_PICTURE_TYPE_I;
1419
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 1385 if (slice_type != s->pict_type) {
1420 ✗ av_log(s->avctx, AV_LOG_ERROR, "Slice type mismatch\n");
1421 ✗ return AVERROR_INVALIDDATA;
1422 }
1423
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 1385 if (s->width != r->si.width || s->height != r->si.height) {
1424 ✗ av_log(s->avctx, AV_LOG_ERROR, "Size mismatch\n");
1425 ✗ return AVERROR_INVALIDDATA;
1426 }
1427
1428 1385 r->si.end = end;
1429 1385 s->qscale = r->si.quant;
1430 1385 s->mb_num_left = r->si.end - r->si.start;
1431 1385 r->s.mb_skip_run = 0;
1432
1433 1385 mb_pos = s->mb_x + s->mb_y * s->mb_width;
1434
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 1385 if(r->si.start != mb_pos){
1435 ✗ av_log(s->avctx, AV_LOG_ERROR, "Slice indicates MB offset %d, got %d\n", r->si.start, mb_pos);
1436 ✗ s->mb_x = r->si.start % s->mb_width;
1437 ✗ s->mb_y = r->si.start / s->mb_width;
1438 }
1439 1385 memset(r->intra_types_hist, -1, r->intra_types_stride * 4 * 2 * sizeof(*r->intra_types_hist));
1440 1385 s->first_slice_line = 1;
1441 1385 s->resync_mb_x = s->mb_x;
1442 1385 s->resync_mb_y = s->mb_y;
1443
1444 1385 ff_init_block_index(s);
1445
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 293665 while(!check_slice_end(r, s)) {
1446 292280 ff_update_block_index(s);
1447
1448
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 292280 if(r->si.type)
1449 284640 res = rv34_decode_inter_macroblock(r, r->intra_types + s->mb_x * 4 + 4);
1450 else
1451 7640 res = rv34_decode_intra_macroblock(r, r->intra_types + s->mb_x * 4 + 4);
1452
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 292280 if(res < 0){
1453 ✗ ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_MB_ERROR);
1454 ✗ return -1;
1455 }
1456
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 292280 if (++s->mb_x == s->mb_width) {
1457 9408 s->mb_x = 0;
1458 9408 s->mb_y++;
1459 9408 ff_init_block_index(s);
1460
1461 9408 memmove(r->intra_types_hist, r->intra_types, r->intra_types_stride * 4 * sizeof(*r->intra_types_hist));
1462 9408 memset(r->intra_types, -1, r->intra_types_stride * 4 * sizeof(*r->intra_types_hist));
1463
1464
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 9408 if(r->loop_filter && s->mb_y >= 2)
1465 8882 r->loop_filter(r, s->mb_y - 2);
1466
1467
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 9408 if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME))
1468 ✗ ff_thread_report_progress(&s->current_picture_ptr->tf,
1469 ✗ s->mb_y - 2, 0);
1470
1471 }
1472
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 292280 if(s->mb_x == s->resync_mb_x)
1473 9031 s->first_slice_line=0;
1474 292280 s->mb_num_left--;
1475 }
1476 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);
1477
1478 1385 return s->mb_y == s->mb_height;
1479 }
1480
1481 /** @} */ // reconstruction group end
1482
1483 /**
1484 * Initialize decoder.
1485 */
1486 9 av_cold int ff_rv34_decode_init(AVCodecContext *avctx)
1487 {
1488 static AVOnce init_static_once = AV_ONCE_INIT;
1489 9 RV34DecContext *r = avctx->priv_data;
1490 9 MpegEncContext *s = &r->s;
1491 int ret;
1492
1493 9 ff_mpv_decode_init(s, avctx);
1494 9 s->out_format = FMT_H263;
1495
1496 9 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
1497 9 avctx->has_b_frames = 1;
1498 9 s->low_delay = 0;
1499
1500 9 ff_mpv_idct_init(s);
1501
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 9 if ((ret = ff_mpv_common_init(s)) < 0)
1502 ✗ return ret;
1503
1504 9 ff_h264_pred_init(&r->h, AV_CODEC_ID_RV40, 8, 1);
1505
1506
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 9 if ((ret = rv34_decoder_alloc(r)) < 0) {
1507 ✗ ff_mpv_common_end(&r->s);
1508 ✗ return ret;
1509 }
1510
1511 9 ff_thread_once(&init_static_once, rv34_init_tables);
1512
1513 9 return 0;
1514 }
1515
1516 ✗ int ff_rv34_decode_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1517 {
1518 ✗ RV34DecContext *r = dst->priv_data, *r1 = src->priv_data;
1519 ✗ MpegEncContext * const s = &r->s, * const s1 = &r1->s;
1520 int err;
1521
1522 ✗ if (dst == src || !s1->context_initialized)
1523 ✗ return 0;
1524
1525 ✗ if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
1526 ✗ s->height = s1->height;
1527 ✗ s->width = s1->width;
1528 ✗ if ((err = ff_mpv_common_frame_size_change(s)) < 0)
1529 ✗ return err;
1530 ✗ if ((err = rv34_decoder_realloc(r)) < 0)
1531 ✗ return err;
1532 }
1533
1534 ✗ r->cur_pts = r1->cur_pts;
1535 ✗ r->last_pts = r1->last_pts;
1536 ✗ r->next_pts = r1->next_pts;
1537
1538 ✗ memset(&r->si, 0, sizeof(r->si));
1539
1540 // Do no call ff_mpeg_update_thread_context on a partially initialized
1541 // decoder context.
1542 ✗ if (!s1->context_initialized)
1543 ✗ return 0;
1544
1545 ✗ return ff_mpeg_update_thread_context(dst, src);
1546 }
1547
1548 4156 static int get_slice_offset(AVCodecContext *avctx, const uint8_t *buf, int n, int slice_count, int buf_size)
1549 {
1550
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 4156 if (n < slice_count) {
1551
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 3273 if(avctx->slice_count) return avctx->slice_offset[n];
1552
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 3273 else return AV_RL32(buf + n*8 - 4) == 1 ? AV_RL32(buf + n*8) : AV_RB32(buf + n*8);
1553 } else
1554 883 return buf_size;
1555 }
1556
1557 526 static int finish_frame(AVCodecContext *avctx, AVFrame *pict)
1558 {
1559 526 RV34DecContext *r = avctx->priv_data;
1560 526 MpegEncContext *s = &r->s;
1561 526 int got_picture = 0, ret;
1562
1563 526 ff_er_frame_end(&s->er);
1564 526 ff_mpv_frame_end(s);
1565 526 s->mb_num_left = 0;
1566
1567
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 526 if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME))
1568 ✗ ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0);
1569
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 526 if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
1571
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 387 if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0)
1572 ✗ return ret;
1573 387 ff_print_debug_info(s, s->current_picture_ptr, pict);
1574 387 ff_mpv_export_qp_table(s, pict, s->current_picture_ptr, FF_QSCALE_TYPE_MPEG1);
1575 387 got_picture = 1;
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 139 } else if (s->last_picture_ptr) {
1577
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 130 if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0)
1578 ✗ return ret;
1579 130 ff_print_debug_info(s, s->last_picture_ptr, pict);
1580 130 ff_mpv_export_qp_table(s, pict, s->last_picture_ptr, FF_QSCALE_TYPE_MPEG1);
1581 130 got_picture = 1;
1582 }
1583
1584 526 return got_picture;
1585 }
1586
1587 ✗ static AVRational update_sar(int old_w, int old_h, AVRational sar, int new_w, int new_h)
1588 {
1589 // attempt to keep aspect during typical resolution switches
1590 ✗ if (!sar.num)
1591 ✗ sar = (AVRational){1, 1};
1592
1593 ✗ sar = av_mul_q(sar, av_mul_q((AVRational){new_h, new_w}, (AVRational){old_w, old_h}));
1594 ✗ return sar;
1595 }
1596
1597 532 int ff_rv34_decode_frame(AVCodecContext *avctx,
1598 void *data, int *got_picture_ptr,
1599 AVPacket *avpkt)
1600 {
1601 532 const uint8_t *buf = avpkt->data;
1602 532 int buf_size = avpkt->size;
1603 532 RV34DecContext *r = avctx->priv_data;
1604 532 MpegEncContext *s = &r->s;
1605 532 AVFrame *pict = data;
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;
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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) {
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 526 if (last) {
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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