FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/rv34.c
Date: 2026-04-28 09:39:03
Exec Total Coverage
Lines: 938 1049 89.4%
Functions: 43 46 93.5%
Branches: 546 661 82.6%
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.h"
31 #include "libavutil/mem_internal.h"
32 #include "libavutil/thread.h"
33
34 #include "avcodec.h"
35 #include "decode.h"
36 #include "error_resilience.h"
37 #include "mpegutils.h"
38 #include "mpegvideo.h"
39 #include "mpegvideodec.h"
40 #include "golomb.h"
41 #include "mathops.h"
42 #include "mpeg_er.h"
43 #include "qpeldsp.h"
44 #include "rectangle.h"
45 #include "thread.h"
46 #include "threadprogress.h"
47
48 #include "rv34vlc.h"
49 #include "rv34data.h"
50 #include "rv34.h"
51
52 457801 static inline void ZERO8x2(void* dst, int stride)
53 {
54 457801 fill_rectangle(dst, 1, 2, stride, 0, 4);
55 457801 fill_rectangle(((uint8_t*)(dst))+4, 1, 2, stride, 0, 4);
56 457801 }
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_FORWARD_MV,
63 MB_TYPE_8x8 | MB_TYPE_FORWARD_MV,
64 MB_TYPE_16x16 | MB_TYPE_FORWARD_MV,
65 MB_TYPE_16x16 | MB_TYPE_BACKWARD_MV,
66 MB_TYPE_SKIP,
67 MB_TYPE_DIRECT2 | MB_TYPE_16x16,
68 MB_TYPE_16x8 | MB_TYPE_FORWARD_MV,
69 MB_TYPE_8x16 | MB_TYPE_FORWARD_MV,
70 MB_TYPE_16x16 | MB_TYPE_BIDIR_MV,
71 MB_TYPE_16x16 | MB_TYPE_FORWARD_MV | 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 av_cold void rv34_gen_vlc_ext(const uint8_t *bits, int size, VLC *vlc,
95 const uint8_t *syms, int mod_three_bits_offset, int *offset)
96 {
97 895 int counts[17] = {0}, codes[17];
98 int maxbits;
99
100 av_assert1(size > 0);
101
102
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 291215 for (int i = 0; i < size; i++)
103 290320 counts[bits[i]]++;
104
105 /* bits[0] is zero for some tables, i.e. syms actually starts at 1.
106 * So we reset it here. The code assigned to this element is 0x00. */
107 895 codes[0] = counts[0] = 0;
108
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 15215 for (int i = 0; i < 16; i++) {
109 14320 codes[i+1] = (codes[i] + counts[i]) << 1;
110
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 14320 if (counts[i])
111 8095 maxbits = i;
112 }
113
114 uint16_t symbols[MAX_VLC_SIZE];
115 uint16_t cw[MAX_VLC_SIZE];
116 895 const void *symp = syms;
117 int symbol_size;
118
119
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 895 if (mod_three_bits_offset > 0) {
120 255 symp = symbols;
121 255 symbol_size = 2;
122
123
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 257295 for (int i = 0, mask = (1 << mod_three_bits_offset) - 1; i < size; ++i) {
124 257040 cw[i] = codes[bits[i]]++;
125 257040 symbols[i] = (modulo_three_table[i >> mod_three_bits_offset] << mod_three_bits_offset) | (i & mask);
126 }
127 } else {
128
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 640 if (!mod_three_bits_offset)
129 240 symp = modulo_three_table;
130
131 640 symbol_size = !!symp;
132
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 33920 for (int i = 0; i < size; ++i)
133 33280 cw[i] = codes[bits[i]]++;
134 }
135
136 895 vlc->table = &table_data[*offset];
137 895 vlc->table_allocated = FF_ARRAY_ELEMS(table_data) - *offset;
138 895 ff_vlc_init_sparse(vlc, FFMIN(maxbits, 9), size,
139 bits, 1, 1,
140 cw, 2, 2,
141 symp, symbol_size, symbol_size, VLC_INIT_STATIC_OVERLONG);
142 895 *offset += vlc->table_size;
143 895 }
144
145 555 static av_cold void rv34_gen_vlc(const uint8_t *bits, int size, const VLCElem **vlcp,
146 int mod_three_bits_offset, int *offset)
147 {
148 555 VLC vlc = { 0 };
149 555 rv34_gen_vlc_ext(bits, size, &vlc, NULL, mod_three_bits_offset, offset);
150 555 *vlcp = vlc.table;
151 555 }
152
153 /**
154 * Initialize all tables.
155 */
156 5 static av_cold void rv34_init_tables(void)
157 {
158 5 int i, j, k, offset = 0;
159
160
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 30 for(i = 0; i < NUM_INTRA_TABLES; i++){
161
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 75 for(j = 0; j < 2; j++){
162 50 rv34_gen_vlc(rv34_table_intra_cbppat [i][j], CBPPAT_VLC_SIZE,
163 &intra_vlcs[i].cbppattern[j], 4, &offset);
164 50 rv34_gen_vlc(rv34_table_intra_secondpat[i][j], OTHERBLK_VLC_SIZE,
165 &intra_vlcs[i].second_pattern[j], 0, &offset);
166 50 rv34_gen_vlc(rv34_table_intra_thirdpat [i][j], OTHERBLK_VLC_SIZE,
167 &intra_vlcs[i].third_pattern[j], 0, &offset);
168
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 250 for(k = 0; k < 4; k++){
169 200 rv34_gen_vlc_ext(rv34_table_intra_cbp[i][j+k*2], CBP_VLC_SIZE,
170 &intra_vlcs[i].cbp[j][k], rv34_cbp_code, -1, &offset);
171 }
172 }
173
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 125 for(j = 0; j < 4; j++){
174 100 rv34_gen_vlc(rv34_table_intra_firstpat[i][j], FIRSTBLK_VLC_SIZE,
175 &intra_vlcs[i].first_pattern[j], 3, &offset);
176 }
177 25 rv34_gen_vlc(rv34_intra_coeff[i], COEFF_VLC_SIZE,
178 &intra_vlcs[i].coefficient, -1, &offset);
179 }
180
181
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 40 for(i = 0; i < NUM_INTER_TABLES; i++){
182 35 rv34_gen_vlc(rv34_inter_cbppat[i], CBPPAT_VLC_SIZE,
183 &inter_vlcs[i].cbppattern[0], 4, &offset);
184
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 175 for(j = 0; j < 4; j++){
185 140 rv34_gen_vlc_ext(rv34_inter_cbp[i][j], CBP_VLC_SIZE,
186 &inter_vlcs[i].cbp[0][j], rv34_cbp_code, -1, &offset);
187 }
188
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 105 for(j = 0; j < 2; j++){
189 70 rv34_gen_vlc(rv34_table_inter_firstpat [i][j], FIRSTBLK_VLC_SIZE,
190 &inter_vlcs[i].first_pattern[j], 3, &offset);
191 70 rv34_gen_vlc(rv34_table_inter_secondpat[i][j], OTHERBLK_VLC_SIZE,
192 &inter_vlcs[i].second_pattern[j], 0, &offset);
193 70 rv34_gen_vlc(rv34_table_inter_thirdpat [i][j], OTHERBLK_VLC_SIZE,
194 &inter_vlcs[i].third_pattern[j], 0, &offset);
195 }
196 35 rv34_gen_vlc(rv34_inter_coeff[i], COEFF_VLC_SIZE,
197 &inter_vlcs[i].coefficient, -1, &offset);
198 }
199 5 }
200
201 /** @} */ // vlc group
202
203 /**
204 * @name RV30/40 4x4 block decoding functions
205 * @{
206 */
207
208 /**
209 * Decode coded block pattern.
210 */
211 129866 static int rv34_decode_cbp(GetBitContext *gb, const RV34VLC *vlc, int table)
212 {
213 129866 int pattern, code, cbp=0;
214 int ones;
215 static const int cbp_masks[3] = {0x100000, 0x010000, 0x110000};
216 static const int shifts[4] = { 0, 2, 8, 10 };
217 129866 const int *curshift = shifts;
218 int i, t, mask;
219
220 129866 code = get_vlc2(gb, vlc->cbppattern[table], 9, 2);
221 129866 pattern = code & 0xF;
222 129866 code >>= 4;
223
224 129866 ones = rv34_count_ones[pattern];
225
226
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 649330 for(mask = 8; mask; mask >>= 1, curshift++){
227
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 519464 if(pattern & mask)
228 182302 cbp |= get_vlc2(gb, vlc->cbp[table][ones].table, vlc->cbp[table][ones].bits, 1) << curshift[0];
229 }
230
231
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 649330 for(i = 0; i < 4; i++){
232 519464 t = (code >> (6 - 2*i)) & 3;
233
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 519464 if(t == 1)
234 121745 cbp |= cbp_masks[get_bits1(gb)] << i;
235
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 519464 if(t == 2)
236 59551 cbp |= cbp_masks[2] << i;
237 }
238 129866 return cbp;
239 }
240
241 /**
242 * Get one coefficient value from the bitstream and store it.
243 */
244 2282071 static inline void decode_coeff(int16_t *dst, int coef, int esc, GetBitContext *gb,
245 const VLCElem *vlc, int q)
246 {
247
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 2282071 if(coef){
248
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 1165141 if(coef == esc){
249 159314 coef = get_vlc2(gb, vlc, 9, 2);
250
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 159314 if(coef > 23){
251 139 coef -= 23;
252 139 coef = 22 + ((1 << coef) | get_bits(gb, coef));
253 }
254 159314 coef += esc;
255 }
256
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 1165141 if(get_bits1(gb))
257 575126 coef = -coef;
258 1165141 *dst = (coef*q + 8) >> 4;
259 }
260 2282071 }
261
262 /**
263 * Decode 2x2 subblock of coefficients.
264 */
265 135062 static inline void decode_subblock(int16_t *dst, int flags, const int is_block2,
266 GetBitContext *gb, const VLCElem *vlc, int q)
267 {
268 135062 decode_coeff( dst+0*4+0, (flags >> 6) , 3, gb, vlc, q);
269
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 135062 if(is_block2){
270 83849 decode_coeff(dst+1*4+0, (flags >> 4) & 3, 2, gb, vlc, q);
271 83849 decode_coeff(dst+0*4+1, (flags >> 2) & 3, 2, gb, vlc, q);
272 }else{
273 51213 decode_coeff(dst+0*4+1, (flags >> 4) & 3, 2, gb, vlc, q);
274 51213 decode_coeff(dst+1*4+0, (flags >> 2) & 3, 2, gb, vlc, q);
275 }
276 135062 decode_coeff( dst+1*4+1, (flags >> 0) & 3, 2, gb, vlc, q);
277 135062 }
278
279 /**
280 * Decode a single coefficient.
281 */
282 406803 static inline void decode_subblock1(int16_t *dst, int flags, GetBitContext *gb,
283 const VLCElem *vlc, int q)
284 {
285 406803 int coeff = flags >> 6;
286 406803 decode_coeff(dst, coeff, 3, gb, vlc, q);
287 406803 }
288
289 333755 static inline void decode_subblock3(int16_t *dst, int flags, GetBitContext *gb,
290 const VLCElem *vlc,
291 int q_dc, int q_ac1, int q_ac2)
292 {
293 333755 decode_coeff(dst+0*4+0, (flags >> 6) , 3, gb, vlc, q_dc);
294 333755 decode_coeff(dst+0*4+1, (flags >> 4) & 3, 2, gb, vlc, q_ac1);
295 333755 decode_coeff(dst+1*4+0, (flags >> 2) & 3, 2, gb, vlc, q_ac1);
296 333755 decode_coeff(dst+1*4+1, (flags >> 0) & 3, 2, gb, vlc, q_ac2);
297 333755 }
298
299 /**
300 * Decode coefficients for 4x4 block.
301 *
302 * This is done by filling 2x2 subblocks with decoded coefficients
303 * in this order (the same for subblocks and subblock coefficients):
304 * o--o
305 * /
306 * /
307 * o--o
308 */
309
310 740558 static int rv34_decode_block(int16_t *dst, GetBitContext *gb, const RV34VLC *rvlc,
311 int fc, int sc, int q_dc, int q_ac1, int q_ac2)
312 {
313 740558 int flags = get_vlc2(gb, rvlc->first_pattern[fc], 9, 2);
314
315 740558 int pattern = flags & 0x7;
316
317 740558 flags >>= 3;
318
319
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 740558 if (flags & 0x3F) {
320 333755 decode_subblock3(dst, flags, gb, rvlc->coefficient, q_dc, q_ac1, q_ac2);
321 } else {
322 406803 decode_subblock1(dst, flags, gb, rvlc->coefficient, q_dc);
323
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 406803 if (!pattern)
324 365599 return 0;
325 }
326
327
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 374959 if(pattern & 4){
328 44969 flags = get_vlc2(gb, rvlc->second_pattern[sc], 9, 2);
329 44969 decode_subblock(dst + 4*0+2, flags, 0, gb, rvlc->coefficient, q_ac2);
330 }
331
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 374959 if(pattern & 2){ // Looks like coefficients 1 and 2 are swapped for this block
332 83849 flags = get_vlc2(gb, rvlc->second_pattern[sc], 9, 2);
333 83849 decode_subblock(dst + 4*2+0, flags, 1, gb, rvlc->coefficient, q_ac2);
334 }
335
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 374959 if(pattern & 1){
336 6244 flags = get_vlc2(gb, rvlc->third_pattern[sc], 9, 2);
337 6244 decode_subblock(dst + 4*2+2, flags, 0, gb, rvlc->coefficient, q_ac2);
338 }
339 374959 return 1;
340 }
341
342 /**
343 * @name RV30/40 bitstream parsing
344 * @{
345 */
346
347 /**
348 * Decode starting slice position.
349 * @todo Maybe replace with ff_h263_decode_mba() ?
350 */
351 2786 int ff_rv34_get_start_offset(GetBitContext *gb, int mb_size)
352 {
353 int i;
354
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 10432 for(i = 0; i < 5; i++)
355
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 10432 if(rv34_mb_max_sizes[i] >= mb_size - 1)
356 2786 break;
357 2786 return get_bits(gb, rv34_mb_bits_sizes[i]);
358 }
359
360 /**
361 * Select VLC set for decoding from current quantizer, modifier and frame type.
362 */
363 130964 static inline RV34VLC* choose_vlc_set(int quant, int mod, int type)
364 {
365
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 130964 if(mod == 2 && quant < 19) quant += 10;
366
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 70514 else if(mod && quant < 26) quant += 5;
367 av_assert2(quant >= 0 && quant < 32);
368 98400 return type ? &inter_vlcs[rv34_quant_to_vlc_set[1][quant]]
369
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 130964 : &intra_vlcs[rv34_quant_to_vlc_set[0][quant]];
370 }
371
372 /**
373 * Decode intra macroblock header and return CBP in case of success, -1 otherwise.
374 */
375 7640 static int rv34_decode_intra_mb_header(RV34DecContext *r, int8_t *intra_types)
376 {
377 7640 MpegEncContext *s = &r->s;
378 7640 GetBitContext *const gb = &r->gb;
379 7640 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
380 int t;
381
382 7640 r->is16 = get_bits1(gb);
383
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 7640 if(r->is16){
384 5830 s->cur_pic.mb_type[mb_pos] = MB_TYPE_INTRA16x16;
385 5830 r->block_type = RV34_MB_TYPE_INTRA16x16;
386 5830 t = get_bits(gb, 2);
387 5830 fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0]));
388 5830 r->luma_vlc = 2;
389 }else{
390
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 1810 if(!r->rv30){
391
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 467 if(!get_bits1(gb))
392 ✗ av_log(s->avctx, AV_LOG_ERROR, "Need DQUANT\n");
393 }
394 1810 s->cur_pic.mb_type[mb_pos] = MB_TYPE_INTRA;
395 1810 r->block_type = RV34_MB_TYPE_INTRA;
396
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 1810 if(r->decode_intra_types(r, gb, intra_types) < 0)
397 ✗ return -1;
398 1810 r->luma_vlc = 1;
399 }
400
401 7640 r->chroma_vlc = 0;
402 7640 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
403
404 7640 return rv34_decode_cbp(gb, r->cur_vlcs, r->is16);
405 }
406
407 /**
408 * Decode inter macroblock header and return CBP in case of success, -1 otherwise.
409 */
410 286800 static int rv34_decode_inter_mb_header(RV34DecContext *r, int8_t *intra_types)
411 {
412 286800 MpegEncContext *s = &r->s;
413 286800 GetBitContext *const gb = &r->gb;
414 286800 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
415 int i, t;
416
417 286800 r->block_type = r->decode_mb_info(r);
418
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 286800 if(r->block_type == -1)
419 ✗ return -1;
420 286800 s->cur_pic.mb_type[mb_pos] = rv34_mb_type_to_lavc[r->block_type];
421 286800 r->mb_type[mb_pos] = r->block_type;
422
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 286800 if(r->block_type == RV34_MB_SKIP){
423
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 164574 if(s->pict_type == AV_PICTURE_TYPE_P)
424 31715 r->mb_type[mb_pos] = RV34_MB_P_16x16;
425
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 164574 if(s->pict_type == AV_PICTURE_TYPE_B)
426 132859 r->mb_type[mb_pos] = RV34_MB_B_DIRECT;
427 }
428 286800 r->is16 = !!IS_INTRA16x16(s->cur_pic.mb_type[mb_pos]);
429
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 286800 if (rv34_decode_mv(r, r->block_type) < 0)
430 ✗ return -1;
431
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 286800 if(r->block_type == RV34_MB_SKIP){
432 164574 fill_rectangle(intra_types, 4, 4, r->intra_types_stride, 0, sizeof(intra_types[0]));
433 164574 return 0;
434 }
435 122226 r->chroma_vlc = 1;
436 122226 r->luma_vlc = 0;
437
438
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 122226 if (IS_INTRA(s->cur_pic.mb_type[mb_pos])) {
439
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 24375 if(r->is16){
440 11056 t = get_bits(gb, 2);
441 11056 fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0]));
442 11056 r->luma_vlc = 2;
443 }else{
444
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 13319 if(r->decode_intra_types(r, gb, intra_types) < 0)
445 ✗ return -1;
446 13319 r->luma_vlc = 1;
447 }
448 24375 r->chroma_vlc = 0;
449 24375 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
450 }else{
451
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 1663467 for(i = 0; i < 16; i++)
452 1565616 intra_types[(i & 3) + (i>>2) * r->intra_types_stride] = 0;
453 97851 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1);
454
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 97851 if(r->mb_type[mb_pos] == RV34_MB_P_MIX16x16){
455 549 r->is16 = 1;
456 549 r->chroma_vlc = 1;
457 549 r->luma_vlc = 2;
458 549 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
459 }
460 }
461
462 122226 return rv34_decode_cbp(gb, r->cur_vlcs, r->is16);
463 }
464
465 /** @} */ //bitstream functions
466
467 /**
468 * @name motion vector related code (prediction, reconstruction, motion compensation)
469 * @{
470 */
471
472 /** macroblock partition width in 8x8 blocks */
473 static const uint8_t part_sizes_w[RV34_MB_TYPES] = { 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 2 };
474
475 /** macroblock partition height in 8x8 blocks */
476 static const uint8_t part_sizes_h[RV34_MB_TYPES] = { 2, 2, 2, 1, 2, 2, 2, 2, 1, 2, 2, 2 };
477
478 /** availability index for subblocks */
479 static const uint8_t avail_indexes[4] = { 6, 7, 10, 11 };
480
481 /**
482 * motion vector prediction
483 *
484 * Motion prediction performed for the block by using median prediction of
485 * motion vectors from the left, top and right top blocks but in corner cases
486 * some other vectors may be used instead.
487 */
488 42942 static void rv34_pred_mv(RV34DecContext *r, int block_type, int subblock_no, int dmv_no)
489 {
490 42942 MpegEncContext *s = &r->s;
491 42942 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
492 42942 int A[2] = {0}, B[2], C[2];
493 int i, j;
494 int mx, my;
495 42942 int* avail = r->avail_cache + avail_indexes[subblock_no];
496 42942 int c_off = part_sizes_w[block_type];
497 42942 int16_t (*motion_val)[2] = s->cur_pic.motion_val[0];
498
499 42942 mv_pos += (subblock_no & 1) + (subblock_no >> 1)*s->b8_stride;
500
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 42942 if(subblock_no == 3)
501 4544 c_off = -1;
502
503
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 42942 if(avail[-1]){
504 41455 A[0] = motion_val[mv_pos-1][0];
505 41455 A[1] = motion_val[mv_pos-1][1];
506 }
507
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 42942 if(avail[-4]){
508 30578 B[0] = motion_val[mv_pos-s->b8_stride][0];
509 30578 B[1] = motion_val[mv_pos-s->b8_stride][1];
510 }else{
511 12364 B[0] = A[0];
512 12364 B[1] = A[1];
513 }
514
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 42942 if(!avail[c_off-4]){
515
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 14048 if(avail[-4] && (avail[-1] || r->rv30)){
516 1831 C[0] = motion_val[mv_pos-s->b8_stride-1][0];
517 1831 C[1] = motion_val[mv_pos-s->b8_stride-1][1];
518 }else{
519 12217 C[0] = A[0];
520 12217 C[1] = A[1];
521 }
522 }else{
523 28894 C[0] = motion_val[mv_pos-s->b8_stride+c_off][0];
524 28894 C[1] = motion_val[mv_pos-s->b8_stride+c_off][1];
525 }
526 42942 mx = mid_pred(A[0], B[0], C[0]);
527 42942 my = mid_pred(A[1], B[1], C[1]);
528 42942 mx += r->dmv[dmv_no][0];
529 42942 my += r->dmv[dmv_no][1];
530
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 107930 for(j = 0; j < part_sizes_h[block_type]; j++){
531
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 166852 for(i = 0; i < part_sizes_w[block_type]; i++){
532 101864 motion_val[mv_pos + i + j*s->b8_stride][0] = mx;
533 101864 motion_val[mv_pos + i + j*s->b8_stride][1] = my;
534 }
535 }
536 42942 }
537
538 #define GET_PTS_DIFF(a, b) (((a) - (b) + 8192) & 0x1FFF)
539
540 /**
541 * Calculate motion vector component that should be added for direct blocks.
542 */
543 810576 static int calc_add_mv(RV34DecContext *r, int dir, int val)
544 {
545
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 810576 int mul = dir ? -r->mv_weight2 : r->mv_weight1;
546
547 810576 return (int)(val * (SUINT)mul + 0x2000) >> 14;
548 }
549
550 /**
551 * Predict motion vector for B-frame macroblock.
552 */
553 47304 static inline void rv34_pred_b_vector(int A[2], int B[2], int C[2],
554 int A_avail, int B_avail, int C_avail,
555 int *mx, int *my)
556 {
557
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 47304 if(A_avail + B_avail + C_avail != 3){
558 34556 *mx = A[0] + B[0] + C[0];
559 34556 *my = A[1] + B[1] + C[1];
560
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 34556 if(A_avail + B_avail + C_avail == 2){
561 11663 *mx /= 2;
562 11663 *my /= 2;
563 }
564 }else{
565 12748 *mx = mid_pred(A[0], B[0], C[0]);
566 12748 *my = mid_pred(A[1], B[1], C[1]);
567 }
568 47304 }
569
570 /**
571 * motion vector prediction for B-frames
572 */
573 47304 static void rv34_pred_mv_b(RV34DecContext *r, int block_type, int dir)
574 {
575 47304 MpegEncContext *s = &r->s;
576 47304 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
577 47304 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
578 47304 int A[2] = { 0 }, B[2] = { 0 }, C[2] = { 0 };
579 47304 int has_A = 0, has_B = 0, has_C = 0;
580 int mx, my;
581 int i, j;
582 47304 MPVWorkPicture *cur_pic = &s->cur_pic;
583
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 47304 const int mask = dir ? MB_TYPE_BACKWARD_MV : MB_TYPE_FORWARD_MV;
584 47304 int type = cur_pic->mb_type[mb_pos];
585
586
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 47304 if((r->avail_cache[6-1] & type) & mask){
587 29735 A[0] = cur_pic->motion_val[dir][mv_pos - 1][0];
588 29735 A[1] = cur_pic->motion_val[dir][mv_pos - 1][1];
589 29735 has_A = 1;
590 }
591
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 47304 if((r->avail_cache[6-4] & type) & mask){
592 24178 B[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride][0];
593 24178 B[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride][1];
594 24178 has_B = 1;
595 }
596
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 47304 if(r->avail_cache[6-4] && (r->avail_cache[6-2] & type) & mask){
597 22080 C[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride + 2][0];
598 22080 C[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride + 2][1];
599 22080 has_C = 1;
600
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 25224 }else if((s->mb_x+1) == s->mb_width && (r->avail_cache[6-5] & type) & mask){
601 391 C[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride - 1][0];
602 391 C[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride - 1][1];
603 391 has_C = 1;
604 }
605
606 47304 rv34_pred_b_vector(A, B, C, has_A, has_B, has_C, &mx, &my);
607
608 47304 mx += r->dmv[dir][0];
609 47304 my += r->dmv[dir][1];
610
611
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 141912 for(j = 0; j < 2; j++){
612
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 283824 for(i = 0; i < 2; i++){
613 189216 cur_pic->motion_val[dir][mv_pos + i + j*s->b8_stride][0] = mx;
614 189216 cur_pic->motion_val[dir][mv_pos + i + j*s->b8_stride][1] = my;
615 }
616 }
617
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 47304 if(block_type == RV34_MB_B_BACKWARD || block_type == RV34_MB_B_FORWARD){
618 28682 ZERO8x2(cur_pic->motion_val[!dir][mv_pos], s->b8_stride);
619 }
620 47304 }
621
622 /**
623 * motion vector prediction - RV3 version
624 */
625 9134 static void rv34_pred_mv_rv3(RV34DecContext *r, int block_type, int dir)
626 {
627 9134 MpegEncContext *s = &r->s;
628 9134 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
629 9134 int A[2] = {0}, B[2], C[2];
630 int i, j, k;
631 int mx, my;
632 9134 int* avail = r->avail_cache + avail_indexes[0];
633
634
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 9134 if(avail[-1]){
635 8666 A[0] = s->cur_pic.motion_val[0][mv_pos - 1][0];
636 8666 A[1] = s->cur_pic.motion_val[0][mv_pos - 1][1];
637 }
638
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 9134 if(avail[-4]){
639 8618 B[0] = s->cur_pic.motion_val[0][mv_pos - s->b8_stride][0];
640 8618 B[1] = s->cur_pic.motion_val[0][mv_pos - s->b8_stride][1];
641 }else{
642 516 B[0] = A[0];
643 516 B[1] = A[1];
644 }
645
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 9134 if(!avail[-4 + 2]){
646
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 950 if(avail[-4] && (avail[-1])){
647 434 C[0] = s->cur_pic.motion_val[0][mv_pos - s->b8_stride - 1][0];
648 434 C[1] = s->cur_pic.motion_val[0][mv_pos - s->b8_stride - 1][1];
649 }else{
650 516 C[0] = A[0];
651 516 C[1] = A[1];
652 }
653 }else{
654 8184 C[0] = s->cur_pic.motion_val[0][mv_pos - s->b8_stride + 2][0];
655 8184 C[1] = s->cur_pic.motion_val[0][mv_pos - s->b8_stride + 2][1];
656 }
657 9134 mx = mid_pred(A[0], B[0], C[0]);
658 9134 my = mid_pred(A[1], B[1], C[1]);
659 9134 mx += r->dmv[0][0];
660 9134 my += r->dmv[0][1];
661
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662
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663
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 109608 for(k = 0; k < 2; k++){
664 73072 s->cur_pic.motion_val[k][mv_pos + i + j*s->b8_stride][0] = mx;
665 73072 s->cur_pic.motion_val[k][mv_pos + i + j*s->b8_stride][1] = my;
666 }
667 }
668 }
669 9134 }
670
671 static const int chroma_coeffs[3] = { 0, 3, 5 };
672
673 /**
674 * generic motion compensation function
675 *
676 * @param r decoder context
677 * @param block_type type of the current block
678 * @param xoff horizontal offset from the start of the current block
679 * @param yoff vertical offset from the start of the current block
680 * @param mv_off offset to the motion vector information
681 * @param width width of the current partition in 8x8 blocks
682 * @param height height of the current partition in 8x8 blocks
683 * @param dir motion compensation direction (i.e. from the last or the next reference frame)
684 * @param thirdpel motion vectors are specified in 1/3 of pixel
685 * @param qpel_mc a set of functions used to perform luma motion compensation
686 * @param chroma_mc a set of functions used to perform chroma motion compensation
687 */
688 516215 static inline void rv34_mc(RV34DecContext *r, const int block_type,
689 const int xoff, const int yoff, int mv_off,
690 const int width, const int height, int dir,
691 const int thirdpel, int weighted,
692 qpel_mc_func (*qpel_mc)[16],
693 h264_chroma_mc_func (*chroma_mc))
694 {
695 516215 MpegEncContext *s = &r->s;
696 uint8_t *Y, *U, *V;
697 const uint8_t *srcY, *srcU, *srcV;
698 int dxy, mx, my, umx, umy, lx, ly, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
699 516215 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride + mv_off;
700 516215 int is16x16 = 1;
701 516215 int emu = 0;
702 516215 int16_t *motion_val = s->cur_pic.motion_val[dir][mv_pos];
703
704
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 516215 if(thirdpel){
705 int chroma_mx, chroma_my;
706 127708 mx = (motion_val[0] + (3 << 24)) / 3 - (1 << 24);
707 127708 my = (motion_val[1] + (3 << 24)) / 3 - (1 << 24);
708 127708 lx = (motion_val[0] + (3 << 24)) % 3;
709 127708 ly = (motion_val[1] + (3 << 24)) % 3;
710 127708 chroma_mx = motion_val[0] / 2;
711 127708 chroma_my = motion_val[1] / 2;
712 127708 umx = (chroma_mx + (3 << 24)) / 3 - (1 << 24);
713 127708 umy = (chroma_my + (3 << 24)) / 3 - (1 << 24);
714 127708 uvmx = chroma_coeffs[(chroma_mx + (3 << 24)) % 3];
715 127708 uvmy = chroma_coeffs[(chroma_my + (3 << 24)) % 3];
716 }else{
717 int cx, cy;
718 388507 mx = motion_val[0] >> 2;
719 388507 my = motion_val[1] >> 2;
720 388507 lx = motion_val[0] & 3;
721 388507 ly = motion_val[1] & 3;
722 388507 cx = motion_val[0] / 2;
723 388507 cy = motion_val[1] / 2;
724 388507 umx = cx >> 2;
725 388507 umy = cy >> 2;
726 388507 uvmx = (cx & 3) << 1;
727 388507 uvmy = (cy & 3) << 1;
728 //due to some flaw RV40 uses the same MC compensation routine for H2V2 and H3V3
729
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 388507 if(uvmx == 6 && uvmy == 6)
730 7463 uvmx = uvmy = 4;
731 }
732
733
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 516215 if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME)) {
734 /* wait for the referenced mb row to be finished */
735 ✗ int mb_row = s->mb_y + ((yoff + my + 5 + 8 * height) >> 4);
736 ✗ const ThreadProgress *p = dir ? &s->next_pic.ptr->progress : &s->last_pic.ptr->progress;
737 ✗ ff_thread_progress_await(p, mb_row);
738 }
739
740 516215 dxy = ly*4 + lx;
741
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 516215 srcY = dir ? s->next_pic.data[0] : s->last_pic.data[0];
742
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 516215 srcU = dir ? s->next_pic.data[1] : s->last_pic.data[1];
743
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 516215 srcV = dir ? s->next_pic.data[2] : s->last_pic.data[2];
744 516215 src_x = s->mb_x * 16 + xoff + mx;
745 516215 src_y = s->mb_y * 16 + yoff + my;
746 516215 uvsrc_x = s->mb_x * 8 + (xoff >> 1) + umx;
747 516215 uvsrc_y = s->mb_y * 8 + (yoff >> 1) + umy;
748 516215 srcY += src_y * s->linesize + src_x;
749 516215 srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
750 516215 srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
751
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 516215 if(s->h_edge_pos - (width << 3) < 6 || s->v_edge_pos - (height << 3) < 6 ||
752
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 516215 (unsigned)(src_x - !!lx*2) > s->h_edge_pos - !!lx*2 - (width <<3) - 4 ||
753
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 500060 (unsigned)(src_y - !!ly*2) > s->v_edge_pos - !!ly*2 - (height<<3) - 4) {
754 43917 srcY -= 2 + 2*s->linesize;
755 43917 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, srcY,
756 s->linesize, s->linesize,
757 43917 (width << 3) + 6, (height << 3) + 6,
758 src_x - 2, src_y - 2,
759 s->h_edge_pos, s->v_edge_pos);
760 43917 srcY = s->sc.edge_emu_buffer + 2 + 2*s->linesize;
761 43917 emu = 1;
762 }
763
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 516215 if(!weighted){
764 231631 Y = s->dest[0] + xoff + yoff *s->linesize;
765 231631 U = s->dest[1] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
766 231631 V = s->dest[2] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
767 }else{
768 284584 Y = r->tmp_b_block_y [dir] + xoff + yoff *s->linesize;
769 284584 U = r->tmp_b_block_uv[dir*2] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
770 284584 V = r->tmp_b_block_uv[dir*2+1] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
771 }
772
773
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 516215 if(block_type == RV34_MB_P_16x8){
774 2720 qpel_mc[1][dxy](Y, srcY, s->linesize);
775 2720 Y += 8;
776 2720 srcY += 8;
777
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 513495 }else if(block_type == RV34_MB_P_8x16){
778 4968 qpel_mc[1][dxy](Y, srcY, s->linesize);
779 4968 Y += 8 * s->linesize;
780 4968 srcY += 8 * s->linesize;
781 }
782
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 516215 is16x16 = (block_type != RV34_MB_P_8x8) && (block_type != RV34_MB_P_16x8) && (block_type != RV34_MB_P_8x16);
783
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 516215 qpel_mc[!is16x16][dxy](Y, srcY, s->linesize);
784
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 516215 if (emu) {
785 43917 uint8_t *uvbuf = s->sc.edge_emu_buffer;
786
787 43917 s->vdsp.emulated_edge_mc(uvbuf, srcU,
788 s->uvlinesize, s->uvlinesize,
789 43917 (width << 2) + 1, (height << 2) + 1,
790 uvsrc_x, uvsrc_y,
791 43917 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
792 43917 srcU = uvbuf;
793 43917 uvbuf += 9*s->uvlinesize;
794
795 43917 s->vdsp.emulated_edge_mc(uvbuf, srcV,
796 s->uvlinesize, s->uvlinesize,
797 43917 (width << 2) + 1, (height << 2) + 1,
798 uvsrc_x, uvsrc_y,
799 43917 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
800 43917 srcV = uvbuf;
801 }
802 516215 chroma_mc[2-width] (U, srcU, s->uvlinesize, height*4, uvmx, uvmy);
803 516215 chroma_mc[2-width] (V, srcV, s->uvlinesize, height*4, uvmx, uvmy);
804 516215 }
805
806 112473 static void rv34_mc_1mv(RV34DecContext *r, const int block_type,
807 const int xoff, const int yoff, int mv_off,
808 const int width, const int height, int dir)
809 {
810 112473 rv34_mc(r, block_type, xoff, yoff, mv_off, width, height, dir, r->rv30, 0,
811 112473 r->rdsp.put_pixels_tab,
812 112473 r->rdsp.put_chroma_pixels_tab);
813 112473 }
814
815 117119 static void rv4_weight(RV34DecContext *r)
816 {
817 117119 r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][0](r->s.dest[0],
818 r->tmp_b_block_y[0],
819 r->tmp_b_block_y[1],
820 r->weight1,
821 r->weight2,
822 r->s.linesize);
823 117119 r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][1](r->s.dest[1],
824 r->tmp_b_block_uv[0],
825 r->tmp_b_block_uv[2],
826 r->weight1,
827 r->weight2,
828 r->s.uvlinesize);
829 117119 r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][1](r->s.dest[2],
830 r->tmp_b_block_uv[1],
831 r->tmp_b_block_uv[3],
832 r->weight1,
833 r->weight2,
834 r->s.uvlinesize);
835 117119 }
836
837 155947 static void rv34_mc_2mv(RV34DecContext *r, const int block_type)
838 {
839
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 155947 int weighted = !r->rv30 && block_type != RV34_MB_B_BIDIR && r->weight1 != 8192;
840
841 155947 rv34_mc(r, block_type, 0, 0, 0, 2, 2, 0, r->rv30, weighted,
842 155947 r->rdsp.put_pixels_tab,
843 155947 r->rdsp.put_chroma_pixels_tab);
844
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 155947 if(!weighted){
845 47219 rv34_mc(r, block_type, 0, 0, 0, 2, 2, 1, r->rv30, 0,
846 47219 r->rdsp.avg_pixels_tab,
847 47219 r->rdsp.avg_chroma_pixels_tab);
848 }else{
849 108728 rv34_mc(r, block_type, 0, 0, 0, 2, 2, 1, r->rv30, 1,
850 108728 r->rdsp.put_pixels_tab,
851 108728 r->rdsp.put_chroma_pixels_tab);
852 108728 rv4_weight(r);
853 }
854 155947 }
855
856 11481 static void rv34_mc_2mv_skip(RV34DecContext *r)
857 {
858 int i, j;
859
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 11481 int weighted = !r->rv30 && r->weight1 != 8192;
860
861
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 34443 for(j = 0; j < 2; j++)
862
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 68886 for(i = 0; i < 2; i++){
863 45924 rv34_mc(r, RV34_MB_P_8x8, i*8, j*8, i+j*r->s.b8_stride, 1, 1, 0, r->rv30,
864 weighted,
865 45924 r->rdsp.put_pixels_tab,
866 45924 r->rdsp.put_chroma_pixels_tab);
867
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 45924 rv34_mc(r, RV34_MB_P_8x8, i*8, j*8, i+j*r->s.b8_stride, 1, 1, 1, r->rv30,
868 weighted,
869 weighted ? r->rdsp.put_pixels_tab : r->rdsp.avg_pixels_tab,
870 weighted ? r->rdsp.put_chroma_pixels_tab : r->rdsp.avg_chroma_pixels_tab);
871 }
872
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 11481 if(weighted)
873 8391 rv4_weight(r);
874 11481 }
875
876 /** number of motion vectors in each macroblock type */
877 static const int num_mvs[RV34_MB_TYPES] = { 0, 0, 1, 4, 1, 1, 0, 0, 2, 2, 2, 1 };
878
879 /**
880 * Decode motion vector differences
881 * and perform motion vector reconstruction and motion compensation.
882 */
883 286800 static int rv34_decode_mv(RV34DecContext *r, int block_type)
884 {
885 286800 MpegEncContext *s = &r->s;
886 286800 GetBitContext *const gb = &r->gb;
887 int i, j, k, l;
888 286800 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
889 int next_bt;
890
891 286800 memset(r->dmv, 0, sizeof(r->dmv));
892
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 386180 for(i = 0; i < num_mvs[block_type]; i++){
893 99380 r->dmv[i][0] = get_interleaved_se_golomb(gb);
894 99380 r->dmv[i][1] = get_interleaved_se_golomb(gb);
895
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 99380 if (r->dmv[i][0] == INVALID_VLC ||
896
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 99380 r->dmv[i][1] == INVALID_VLC) {
897 ✗ r->dmv[i][0] = r->dmv[i][1] = 0;
898 ✗ return AVERROR_INVALIDDATA;
899 }
900 }
901
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 286800 switch(block_type){
902 24375 case RV34_MB_TYPE_INTRA:
903 case RV34_MB_TYPE_INTRA16x16:
904 24375 ZERO8x2(s->cur_pic.motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
905 24375 return 0;
906 164574 case RV34_MB_SKIP:
907
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 164574 if(s->pict_type == AV_PICTURE_TYPE_P){
908 31715 ZERO8x2(s->cur_pic.motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
909 31715 rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0);
910 31715 break;
911 }
912 case RV34_MB_B_DIRECT:
913 //surprisingly, it uses motion scheme from next reference frame
914 /* wait for the current mb row to be finished */
915
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 158117 if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME))
916 ✗ ff_thread_progress_await(&s->next_pic.ptr->progress, FFMAX(0, s->mb_y-1));
917
918 158117 next_bt = s->next_pic.mb_type[s->mb_x + s->mb_y * s->mb_stride];
919
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 158117 if(IS_INTRA(next_bt) || IS_SKIP(next_bt)){
920 107456 ZERO8x2(s->cur_pic.motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
921 107456 ZERO8x2(s->cur_pic.motion_val[1][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
922 }else
923
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 151983 for(j = 0; j < 2; j++)
924
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 303966 for(i = 0; i < 2; i++)
925
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 607932 for(k = 0; k < 2; k++)
926
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 1215864 for(l = 0; l < 2; l++)
927 810576 s->cur_pic.motion_val[l][mv_pos + i + j*s->b8_stride][k] = calc_add_mv(r, l, s->next_pic.motion_val[0][mv_pos + i + j*s->b8_stride][k]);
928
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 158117 if(!(IS_16X8(next_bt) || IS_8X16(next_bt) || IS_8X8(next_bt))) //we can use whole macroblock MC
929 146636 rv34_mc_2mv(r, block_type);
930 else
931 11481 rv34_mc_2mv_skip(r);
932 158117 ZERO8x2(s->cur_pic.motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
933 158117 break;
934 17078 case RV34_MB_P_16x16:
935 case RV34_MB_P_MIX16x16:
936 17078 rv34_pred_mv(r, block_type, 0, 0);
937 17078 rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0);
938 17078 break;
939 37816 case RV34_MB_B_FORWARD:
940 case RV34_MB_B_BACKWARD:
941 37816 r->dmv[1][0] = r->dmv[0][0];
942 37816 r->dmv[1][1] = r->dmv[0][1];
943
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 37816 if(r->rv30)
944 9134 rv34_pred_mv_rv3(r, block_type, block_type == RV34_MB_B_BACKWARD);
945 else
946 28682 rv34_pred_mv_b (r, block_type, block_type == RV34_MB_B_BACKWARD);
947 37816 rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, block_type == RV34_MB_B_BACKWARD);
948 37816 break;
949 3844 case RV34_MB_P_16x8:
950 case RV34_MB_P_8x16:
951 3844 rv34_pred_mv(r, block_type, 0, 0);
952
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 3844 rv34_pred_mv(r, block_type, 1 + (block_type == RV34_MB_P_16x8), 1);
953
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 3844 if(block_type == RV34_MB_P_16x8){
954 1360 rv34_mc_1mv(r, block_type, 0, 0, 0, 2, 1, 0);
955 1360 rv34_mc_1mv(r, block_type, 0, 8, s->b8_stride, 2, 1, 0);
956 }
957
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 3844 if(block_type == RV34_MB_P_8x16){
958 2484 rv34_mc_1mv(r, block_type, 0, 0, 0, 1, 2, 0);
959 2484 rv34_mc_1mv(r, block_type, 8, 0, 1, 1, 2, 0);
960 }
961 3844 break;
962 9311 case RV34_MB_B_BIDIR:
963 9311 rv34_pred_mv_b (r, block_type, 0);
964 9311 rv34_pred_mv_b (r, block_type, 1);
965 9311 rv34_mc_2mv (r, block_type);
966 9311 break;
967 4544 case RV34_MB_P_8x8:
968
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 22720 for(i=0;i< 4;i++){
969 18176 rv34_pred_mv(r, block_type, i, i);
970 18176 rv34_mc_1mv (r, block_type, (i&1)<<3, (i&2)<<2, (i&1)+(i>>1)*s->b8_stride, 1, 1, 0);
971 }
972 4544 break;
973 }
974
975 262425 return 0;
976 }
977 /** @} */ // mv group
978
979 /**
980 * @name Macroblock reconstruction functions
981 * @{
982 */
983 /** mapping of RV30/40 intra prediction types to standard H.264 types */
984 static const int ittrans[9] = {
985 DC_PRED, VERT_PRED, HOR_PRED, DIAG_DOWN_RIGHT_PRED, DIAG_DOWN_LEFT_PRED,
986 VERT_RIGHT_PRED, VERT_LEFT_PRED, HOR_UP_PRED, HOR_DOWN_PRED,
987 };
988
989 /** mapping of RV30/40 intra 16x16 prediction types to standard H.264 types */
990 static const int ittrans16[4] = {
991 DC_PRED8x8, VERT_PRED8x8, HOR_PRED8x8, PLANE_PRED8x8,
992 };
993
994 /**
995 * Perform 4x4 intra prediction.
996 */
997 363096 static void rv34_pred_4x4_block(RV34DecContext *r, uint8_t *dst, int stride, int itype, int up, int left, int down, int right)
998 {
999 363096 uint8_t *prev = dst - stride + 4;
1000 uint32_t topleft;
1001
1002
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 363096 if(!up && !left)
1003 906 itype = DC_128_PRED;
1004
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 362190 else if(!up){
1005
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 43726 if(itype == VERT_PRED) itype = HOR_PRED;
1006
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 43726 if(itype == DC_PRED) itype = LEFT_DC_PRED;
1007
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 318464 }else if(!left){
1008
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 5318 if(itype == HOR_PRED) itype = VERT_PRED;
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 5318 if(itype == DC_PRED) itype = TOP_DC_PRED;
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 5318 if(itype == DIAG_DOWN_LEFT_PRED) itype = DIAG_DOWN_LEFT_PRED_RV40_NODOWN;
1011 }
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 363096 if(!down){
1013
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 289785 if(itype == DIAG_DOWN_LEFT_PRED) itype = DIAG_DOWN_LEFT_PRED_RV40_NODOWN;
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 289785 if(itype == HOR_UP_PRED) itype = HOR_UP_PRED_RV40_NODOWN;
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 289785 if(itype == VERT_LEFT_PRED) itype = VERT_LEFT_PRED_RV40_NODOWN;
1016 }
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 363096 if(!right && up){
1018 76137 topleft = dst[-stride + 3] * 0x01010101u;
1019 76137 prev = (uint8_t*)&topleft;
1020 }
1021 363096 r->h.pred4x4[itype](dst, prev, stride);
1022 363096 }
1023
1024 33772 static inline int adjust_pred16(int itype, int up, int left)
1025 {
1026
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 33772 if(!up && !left)
1027 54 itype = DC_128_PRED8x8;
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 33718 else if(!up){
1029
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 5780 if(itype == PLANE_PRED8x8)itype = HOR_PRED8x8;
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 5780 if(itype == VERT_PRED8x8) itype = HOR_PRED8x8;
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 5780 if(itype == DC_PRED8x8) itype = LEFT_DC_PRED8x8;
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 27938 }else if(!left){
1033
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 840 if(itype == PLANE_PRED8x8)itype = VERT_PRED8x8;
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 840 if(itype == HOR_PRED8x8) itype = VERT_PRED8x8;
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 840 if(itype == DC_PRED8x8) itype = TOP_DC_PRED8x8;
1036 }
1037 33772 return itype;
1038 }
1039
1040 708799 static inline void rv34_process_block(RV34DecContext *r,
1041 uint8_t *pdst, int stride,
1042 int fc, int sc, int q_dc, int q_ac)
1043 {
1044 708799 int16_t *const ptr = r->block;
1045 708799 int has_ac = rv34_decode_block(ptr, &r->gb, r->cur_vlcs,
1046 fc, sc, q_dc, q_ac, q_ac);
1047
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 708799 if(has_ac){
1048 352408 r->rdsp.rv34_idct_add(pdst, stride, ptr);
1049 }else{
1050 356391 r->rdsp.rv34_idct_dc_add(pdst, stride, ptr[0]);
1051 356391 ptr[0] = 0;
1052 }
1053 708799 }
1054
1055 16886 static void rv34_output_i16x16(RV34DecContext *r, int8_t *intra_types, int cbp)
1056 {
1057 16886 LOCAL_ALIGNED_16(int16_t, block16, [16]);
1058 16886 MpegEncContext *s = &r->s;
1059 16886 GetBitContext *const gb = &r->gb;
1060 16886 int q_dc = rv34_qscale_tab[ r->luma_dc_quant_i[s->qscale] ],
1061 16886 q_ac = rv34_qscale_tab[s->qscale];
1062 16886 uint8_t *dst = s->dest[0];
1063 16886 int16_t *const ptr = r->block;
1064 int i, j, itype, has_ac;
1065
1066 16886 memset(block16, 0, 16 * sizeof(*block16));
1067
1068 16886 has_ac = rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0, q_dc, q_dc, q_ac);
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 16886 if(has_ac)
1070 7959 r->rdsp.rv34_inv_transform(block16);
1071 else
1072 8927 r->rdsp.rv34_inv_transform_dc(block16);
1073
1074 16886 itype = ittrans16[intra_types[0]];
1075 16886 itype = adjust_pred16(itype, r->avail_cache[6-4], r->avail_cache[6-1]);
1076 16886 r->h.pred16x16[itype](dst, s->linesize);
1077
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 84430 for(j = 0; j < 4; j++){
1079
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 337720 for(i = 0; i < 4; i++, cbp >>= 1){
1080 270176 int dc = block16[i + j*4];
1081
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 270176 if(cbp & 1){
1083 14318 has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac);
1084 }else
1085 255858 has_ac = 0;
1086
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 270176 if(has_ac){
1088 14318 ptr[0] = dc;
1089 14318 r->rdsp.rv34_idct_add(dst+4*i, s->linesize, ptr);
1090 }else
1091 255858 r->rdsp.rv34_idct_dc_add(dst+4*i, s->linesize, dc);
1092 }
1093
1094 67544 dst += 4*s->linesize;
1095 }
1096
1097 16886 itype = ittrans16[intra_types[0]];
1098
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 16886 if(itype == PLANE_PRED8x8) itype = DC_PRED8x8;
1099 16886 itype = adjust_pred16(itype, r->avail_cache[6-4], r->avail_cache[6-1]);
1100
1101 16886 q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]];
1102 16886 q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]];
1103
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 50658 for(j = 1; j < 3; j++){
1105 33772 dst = s->dest[j];
1106 33772 r->h.pred8x8[itype](dst, s->uvlinesize);
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 168860 for(i = 0; i < 4; i++, cbp >>= 1){
1108 uint8_t *pdst;
1109
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 135088 if(!(cbp & 1)) continue;
1110 24781 pdst = dst + (i&1)*4 + (i&2)*2*s->uvlinesize;
1111
1112 24781 rv34_process_block(r, pdst, s->uvlinesize,
1113 r->chroma_vlc, 1, q_dc, q_ac);
1114 }
1115 }
1116 16886 }
1117
1118 15129 static void rv34_output_intra(RV34DecContext *r, int8_t *intra_types, int cbp)
1119 {
1120 15129 MpegEncContext *s = &r->s;
1121 15129 uint8_t *dst = s->dest[0];
1122 15129 int avail[6*8] = {0};
1123 int i, j, k;
1124 int idx, q_ac, q_dc;
1125
1126 // Set neighbour information.
1127
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 15129 if(r->avail_cache[1])
1128 8929 avail[0] = 1;
1129
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 15129 if(r->avail_cache[2])
1130 9550 avail[1] = avail[2] = 1;
1131
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 15129 if(r->avail_cache[3])
1132 9550 avail[3] = avail[4] = 1;
1133
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 15129 if(r->avail_cache[4])
1134 9514 avail[5] = 1;
1135
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 15129 if(r->avail_cache[5])
1136 14351 avail[8] = avail[16] = 1;
1137
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 15129 if(r->avail_cache[9])
1138 14351 avail[24] = avail[32] = 1;
1139
1140 15129 q_ac = rv34_qscale_tab[s->qscale];
1141
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 75645 for(j = 0; j < 4; j++){
1142 60516 idx = 9 + j*8;
1143
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 302580 for(i = 0; i < 4; i++, cbp >>= 1, dst += 4, idx++){
1144 242064 rv34_pred_4x4_block(r, dst, s->linesize, ittrans[intra_types[i]], avail[idx-8], avail[idx-1], avail[idx+7], avail[idx-7]);
1145 242064 avail[idx] = 1;
1146
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 242064 if(!(cbp & 1)) continue;
1147
1148 148585 rv34_process_block(r, dst, s->linesize,
1149 r->luma_vlc, 0, q_ac, q_ac);
1150 }
1151 60516 dst += s->linesize * 4 - 4*4;
1152 60516 intra_types += r->intra_types_stride;
1153 }
1154
1155 15129 intra_types -= r->intra_types_stride * 4;
1156
1157 15129 q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]];
1158 15129 q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]];
1159
1160
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 45387 for(k = 0; k < 2; k++){
1161 30258 dst = s->dest[1+k];
1162 30258 fill_rectangle(r->avail_cache + 6, 2, 2, 4, 0, 4);
1163
1164
2/2
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✓ Branch 1 taken 30258 times.
 90774 for(j = 0; j < 2; j++){
1165 60516 int* acache = r->avail_cache + 6 + j*4;
1166
2/2
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✓ Branch 1 taken 60516 times.
 181548 for(i = 0; i < 2; i++, cbp >>= 1, acache++){
1167 121032 int itype = ittrans[intra_types[i*2+j*2*r->intra_types_stride]];
1168
4/4
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✓ Branch 1 taken 60516 times.
✓ Branch 2 taken 30258 times.
✓ Branch 3 taken 30258 times.
 121032 rv34_pred_4x4_block(r, dst+4*i, s->uvlinesize, itype, acache[-4], acache[-1], !i && !j, acache[-3]);
1169 121032 acache[0] = 1;
1170
1171
2/2
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✓ Branch 1 taken 71163 times.
 121032 if(!(cbp&1)) continue;
1172
1173 71163 rv34_process_block(r, dst + 4*i, s->uvlinesize,
1174 r->chroma_vlc, 1, q_dc, q_ac);
1175 }
1176
1177 60516 dst += 4*s->uvlinesize;
1178 }
1179 }
1180 15129 }
1181
1182 2263432 static int is_mv_diff_gt_3(int16_t (*motion_val)[2], int step)
1183 {
1184 int d;
1185 2263432 d = motion_val[0][0] - motion_val[-step][0];
1186
4/4
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✓ Branch 1 taken 92976 times.
✓ Branch 2 taken 96418 times.
✓ Branch 3 taken 2074038 times.
 2263432 if(d < -3 || d > 3)
1187 189394 return 1;
1188 2074038 d = motion_val[0][1] - motion_val[-step][1];
1189
4/4
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✓ Branch 1 taken 14429 times.
✓ Branch 2 taken 17585 times.
✓ Branch 3 taken 2042024 times.
 2074038 if(d < -3 || d > 3)
1190 32014 return 1;
1191 2042024 return 0;
1192 }
1193
1194 286800 static int rv34_set_deblock_coef(RV34DecContext *r)
1195 {
1196 286800 MpegEncContext *s = &r->s;
1197 286800 int hmvmask = 0, vmvmask = 0, i, j;
1198 286800 int midx = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
1199 286800 int16_t (*motion_val)[2] = &s->cur_pic.motion_val[0][midx];
1200
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✓ Branch 1 taken 286800 times.
 860400 for(j = 0; j < 16; j += 8){
1201
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✓ Branch 1 taken 573600 times.
 1720800 for(i = 0; i < 2; i++){
1202
2/2
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✓ Branch 2 taken 1040171 times.
 1147200 if(is_mv_diff_gt_3(motion_val + i, 1))
1203 107029 vmvmask |= 0x11 << (j + i*2);
1204
6/6
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✓ Branch 1 taken 573600 times.
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✓ Branch 5 taken 114379 times.
✓ Branch 6 taken 1001853 times.
 1147200 if((j || s->mb_y) && is_mv_diff_gt_3(motion_val + i, s->b8_stride))
1205 114379 hmvmask |= 0x03 << (j + i*2);
1206 }
1207 573600 motion_val += s->b8_stride;
1208 }
1209
2/2
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✓ Branch 1 taken 244165 times.
 286800 if(s->first_slice_line)
1210 42635 hmvmask &= ~0x000F;
1211
2/2
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✓ Branch 1 taken 277620 times.
 286800 if(!s->mb_x)
1212 9180 vmvmask &= ~0x1111;
1213
2/2
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✓ Branch 1 taken 218160 times.
 286800 if(r->rv30){ //RV30 marks both subblocks on the edge for filtering
1214 68640 vmvmask |= (vmvmask & 0x4444) >> 1;
1215 68640 hmvmask |= (hmvmask & 0x0F00) >> 4;
1216
2/2
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✓ Branch 1 taken 3120 times.
 68640 if(s->mb_x)
1217 65520 r->deblock_coefs[s->mb_x - 1 + s->mb_y*s->mb_stride] |= (vmvmask & 0x1111) << 3;
1218
2/2
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✓ Branch 1 taken 6762 times.
 68640 if(!s->first_slice_line)
1219 61878 r->deblock_coefs[s->mb_x + (s->mb_y - 1)*s->mb_stride] |= (hmvmask & 0xF) << 12;
1220 }
1221 286800 return hmvmask | vmvmask;
1222 }
1223
1224 286800 static int rv34_decode_inter_macroblock(RV34DecContext *r, int8_t *intra_types)
1225 {
1226 286800 MpegEncContext *s = &r->s;
1227 286800 GetBitContext *const gb = &r->gb;
1228 286800 uint8_t *dst = s->dest[0];
1229 286800 int16_t *const ptr = r->block;
1230 286800 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1231 int cbp, cbp2;
1232 int q_dc, q_ac, has_ac;
1233 int i, j;
1234 int dist;
1235
1236 // Calculate which neighbours are available. Maybe it's worth optimizing too.
1237 286800 memset(r->avail_cache, 0, sizeof(r->avail_cache));
1238 286800 fill_rectangle(r->avail_cache + 6, 2, 2, 4, 1, 4);
1239 286800 dist = (s->mb_x - s->resync_mb_x) + (s->mb_y - s->resync_mb_y) * s->mb_width;
1240
4/4
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✓ Branch 1 taken 9180 times.
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✓ Branch 3 taken 505 times.
 286800 if(s->mb_x && dist)
1241 277115 r->avail_cache[5] =
1242 277115 r->avail_cache[9] = s->cur_pic.mb_type[mb_pos - 1];
1243
2/2
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 286800 if(dist >= s->mb_width)
1244 244165 r->avail_cache[2] =
1245 244165 r->avail_cache[3] = s->cur_pic.mb_type[mb_pos - s->mb_stride];
1246
4/4
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 286800 if(((s->mb_x+1) < s->mb_width) && dist >= s->mb_width - 1)
1247 236751 r->avail_cache[4] = s->cur_pic.mb_type[mb_pos - s->mb_stride + 1];
1248
4/4
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 286800 if(s->mb_x && dist > s->mb_width)
1249 235822 r->avail_cache[1] = s->cur_pic.mb_type[mb_pos - s->mb_stride - 1];
1250
1251 286800 s->qscale = r->si.quant;
1252 286800 cbp = cbp2 = rv34_decode_inter_mb_header(r, intra_types);
1253 286800 r->cbp_luma [mb_pos] = cbp;
1254 286800 r->cbp_chroma[mb_pos] = cbp >> 16;
1255 286800 r->deblock_coefs[mb_pos] = rv34_set_deblock_coef(r) | r->cbp_luma[mb_pos];
1256 286800 s->cur_pic.qscale_table[mb_pos] = s->qscale;
1257
1258
1/2
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✓ Branch 1 taken 286800 times.
 286800 if(cbp == -1)
1259 ✗ return -1;
1260
1261
2/2
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✓ Branch 1 taken 262425 times.
 286800 if (IS_INTRA(s->cur_pic.mb_type[mb_pos])) {
1262
2/2
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✓ Branch 1 taken 13319 times.
 24375 if(r->is16) rv34_output_i16x16(r, intra_types, cbp);
1263 13319 else rv34_output_intra(r, intra_types, cbp);
1264 24375 return 0;
1265 }
1266
1267
2/2
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✓ Branch 1 taken 261876 times.
 262425 if(r->is16){
1268 // Only for RV34_MB_P_MIX16x16
1269 549 LOCAL_ALIGNED_16(int16_t, block16, [16]);
1270 549 memset(block16, 0, 16 * sizeof(*block16));
1271 549 q_dc = rv34_qscale_tab[ r->luma_dc_quant_p[s->qscale] ];
1272 549 q_ac = rv34_qscale_tab[s->qscale];
1273
2/2
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✓ Branch 2 taken 281 times.
 549 if (rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0, q_dc, q_dc, q_ac))
1274 268 r->rdsp.rv34_inv_transform(block16);
1275 else
1276 281 r->rdsp.rv34_inv_transform_dc(block16);
1277
1278 549 q_ac = rv34_qscale_tab[s->qscale];
1279
1280
2/2
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✓ Branch 1 taken 549 times.
 2745 for(j = 0; j < 4; j++){
1281
2/2
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✓ Branch 1 taken 2196 times.
 10980 for(i = 0; i < 4; i++, cbp >>= 1){
1282 8784 int dc = block16[i + j*4];
1283
1284
2/2
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✓ Branch 1 taken 8778 times.
 8784 if(cbp & 1){
1285 6 has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac);
1286 }else
1287 8778 has_ac = 0;
1288
1289
2/2
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 8784 if(has_ac){
1290 6 ptr[0] = dc;
1291 6 r->rdsp.rv34_idct_add(dst+4*i, s->linesize, ptr);
1292 }else
1293 8778 r->rdsp.rv34_idct_dc_add(dst+4*i, s->linesize, dc);
1294 }
1295
1296 2196 dst += 4*s->linesize;
1297 }
1298
1299 549 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1);
1300 }else{
1301 261876 q_ac = rv34_qscale_tab[s->qscale];
1302
1303
2/2
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✓ Branch 1 taken 261876 times.
 1309380 for(j = 0; j < 4; j++){
1304
2/2
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✓ Branch 1 taken 1047504 times.
 5237520 for(i = 0; i < 4; i++, cbp >>= 1){
1305
2/2
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✓ Branch 1 taken 319367 times.
 4190016 if(!(cbp & 1)) continue;
1306
1307 319367 rv34_process_block(r, dst + 4*i, s->linesize,
1308 r->luma_vlc, 0, q_ac, q_ac);
1309 }
1310 1047504 dst += 4*s->linesize;
1311 }
1312 }
1313
1314 262425 q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]];
1315 262425 q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]];
1316
1317
2/2
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 787275 for(j = 1; j < 3; j++){
1318 524850 dst = s->dest[j];
1319
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 2624250 for(i = 0; i < 4; i++, cbp >>= 1){
1320 uint8_t *pdst;
1321
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✓ Branch 1 taken 144903 times.
 2099400 if(!(cbp & 1)) continue;
1322 144903 pdst = dst + (i&1)*4 + (i&2)*2*s->uvlinesize;
1323
1324 144903 rv34_process_block(r, pdst, s->uvlinesize,
1325 r->chroma_vlc, 1, q_dc, q_ac);
1326 }
1327 }
1328
1329 262425 return 0;
1330 }
1331
1332 7640 static int rv34_decode_intra_macroblock(RV34DecContext *r, int8_t *intra_types)
1333 {
1334 7640 MpegEncContext *s = &r->s;
1335 int cbp, dist;
1336 7640 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1337
1338 // Calculate which neighbours are available. Maybe it's worth optimizing too.
1339 7640 memset(r->avail_cache, 0, sizeof(r->avail_cache));
1340 7640 fill_rectangle(r->avail_cache + 6, 2, 2, 4, 1, 4);
1341 7640 dist = (s->mb_x - s->resync_mb_x) + (s->mb_y - s->resync_mb_y) * s->mb_width;
1342
4/4
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✓ Branch 1 taken 288 times.
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✓ Branch 3 taken 27 times.
 7640 if(s->mb_x && dist)
1343 7325 r->avail_cache[5] =
1344 7325 r->avail_cache[9] = s->cur_pic.mb_type[mb_pos - 1];
1345
2/2
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✓ Branch 1 taken 1507 times.
 7640 if(dist >= s->mb_width)
1346 6133 r->avail_cache[2] =
1347 6133 r->avail_cache[3] = s->cur_pic.mb_type[mb_pos - s->mb_stride];
1348
4/4
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✓ Branch 1 taken 288 times.
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✓ Branch 3 taken 1424 times.
 7640 if(((s->mb_x+1) < s->mb_width) && dist >= s->mb_width - 1)
1349 5928 r->avail_cache[4] = s->cur_pic.mb_type[mb_pos - s->mb_stride + 1];
1350
4/4
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✓ Branch 3 taken 1474 times.
 7640 if(s->mb_x && dist > s->mb_width)
1351 5878 r->avail_cache[1] = s->cur_pic.mb_type[mb_pos - s->mb_stride - 1];
1352
1353 7640 s->qscale = r->si.quant;
1354 7640 cbp = rv34_decode_intra_mb_header(r, intra_types);
1355 7640 r->cbp_luma [mb_pos] = cbp;
1356 7640 r->cbp_chroma[mb_pos] = cbp >> 16;
1357 7640 r->deblock_coefs[mb_pos] = 0xFFFF;
1358 7640 s->cur_pic.qscale_table[mb_pos] = s->qscale;
1359
1360
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 7640 if(cbp == -1)
1361 ✗ return -1;
1362
1363
2/2
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✓ Branch 1 taken 1810 times.
 7640 if(r->is16){
1364 5830 rv34_output_i16x16(r, intra_types, cbp);
1365 5830 return 0;
1366 }
1367
1368 1810 rv34_output_intra(r, intra_types, cbp);
1369 1810 return 0;
1370 }
1371
1372 295833 static int check_slice_end(RV34DecContext *r, MpegEncContext *s)
1373 {
1374 int bits;
1375
2/2
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✓ Branch 1 taken 295304 times.
 295833 if(s->mb_y >= s->mb_height)
1376 529 return 1;
1377
2/2
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✓ Branch 1 taken 294440 times.
 295304 if (!r->mb_num_left)
1378 864 return 1;
1379
2/2
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✓ Branch 1 taken 164744 times.
 294440 if (r->mb_skip_run > 1)
1380 129696 return 0;
1381 164744 bits = get_bits_left(&r->gb);
1382
4/6
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✓ Branch 3 taken 164575 times.
✗ Branch 5 not taken.
✓ Branch 6 taken 169 times.
 164744 if (bits <= 0 || (bits < 8 && !show_bits(&r->gb, bits)))
1383 ✗ return 1;
1384 164744 return 0;
1385 }
1386
1387
1388 9 static void rv34_decoder_free(RV34DecContext *r)
1389 {
1390 9 av_freep(&r->intra_types_hist);
1391 9 r->intra_types = NULL;
1392 9 av_freep(&r->tmp_b_block_base);
1393 9 av_freep(&r->mb_type);
1394 9 av_freep(&r->cbp_luma);
1395 9 av_freep(&r->cbp_chroma);
1396 9 av_freep(&r->deblock_coefs);
1397 9 }
1398
1399
1400 9 static int rv34_decoder_alloc(RV34DecContext *r)
1401 {
1402 9 r->intra_types_stride = r->s.mb_width * 4 + 4;
1403
1404 9 r->cbp_chroma = av_mallocz(r->s.mb_stride * r->s.mb_height *
1405 sizeof(*r->cbp_chroma));
1406 9 r->cbp_luma = av_mallocz(r->s.mb_stride * r->s.mb_height *
1407 sizeof(*r->cbp_luma));
1408 9 r->deblock_coefs = av_mallocz(r->s.mb_stride * r->s.mb_height *
1409 sizeof(*r->deblock_coefs));
1410 9 r->intra_types_hist = av_malloc(r->intra_types_stride * 4 * 2 *
1411 sizeof(*r->intra_types_hist));
1412 9 r->mb_type = av_mallocz(r->s.mb_stride * r->s.mb_height *
1413 sizeof(*r->mb_type));
1414
1415
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 9 if (!(r->cbp_chroma && r->cbp_luma && r->deblock_coefs &&
1416
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✓ Branch 3 taken 9 times.
 9 r->intra_types_hist && r->mb_type)) {
1417 ✗ r->s.context_reinit = 1;
1418 ✗ rv34_decoder_free(r);
1419 ✗ return AVERROR(ENOMEM);
1420 }
1421
1422 9 r->intra_types = r->intra_types_hist + r->intra_types_stride * 4;
1423
1424 9 return 0;
1425 }
1426
1427
1428 ✗ static int rv34_decoder_realloc(RV34DecContext *r)
1429 {
1430 ✗ rv34_decoder_free(r);
1431 ✗ return rv34_decoder_alloc(r);
1432 }
1433
1434
1435 1393 static int rv34_decode_slice(RV34DecContext *r, int end, const uint8_t* buf, int buf_size)
1436 {
1437 1393 MpegEncContext *s = &r->s;
1438 1393 GetBitContext *const gb = &r->gb;
1439 int mb_pos, slice_type;
1440 int res;
1441
1442 1393 init_get_bits(gb, buf, buf_size*8);
1443 1393 res = r->parse_slice_header(r, gb, &r->si);
1444
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✓ Branch 1 taken 1393 times.
 1393 if(res < 0){
1445 ✗ av_log(s->avctx, AV_LOG_ERROR, "Incorrect or unknown slice header\n");
1446 ✗ return -1;
1447 }
1448
1449
2/2
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✓ Branch 1 taken 59 times.
 1393 slice_type = r->si.type ? r->si.type : AV_PICTURE_TYPE_I;
1450
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✓ Branch 1 taken 1393 times.
 1393 if (slice_type != s->pict_type) {
1451 ✗ av_log(s->avctx, AV_LOG_ERROR, "Slice type mismatch\n");
1452 ✗ return AVERROR_INVALIDDATA;
1453 }
1454
2/4
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✗ Branch 1 not taken.
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✓ Branch 3 taken 1393 times.
 1393 if (s->width != r->si.width || s->height != r->si.height) {
1455 ✗ av_log(s->avctx, AV_LOG_ERROR, "Size mismatch\n");
1456 ✗ return AVERROR_INVALIDDATA;
1457 }
1458
1459 1393 r->si.end = end;
1460 1393 s->qscale = r->si.quant;
1461 1393 r->mb_num_left = r->si.end - r->si.start;
1462 1393 r->mb_skip_run = 0;
1463
1464 1393 mb_pos = s->mb_x + s->mb_y * s->mb_width;
1465
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 1393 if(r->si.start != mb_pos){
1466 ✗ av_log(s->avctx, AV_LOG_ERROR, "Slice indicates MB offset %d, got %d\n", r->si.start, mb_pos);
1467 ✗ s->mb_x = r->si.start % s->mb_width;
1468 ✗ s->mb_y = r->si.start / s->mb_width;
1469 }
1470 1393 memset(r->intra_types_hist, -1, r->intra_types_stride * 4 * 2 * sizeof(*r->intra_types_hist));
1471 1393 s->first_slice_line = 1;
1472 1393 s->resync_mb_x = s->mb_x;
1473 1393 s->resync_mb_y = s->mb_y;
1474
1475 1393 ff_init_block_index(s);
1476
2/2
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✓ Branch 2 taken 1393 times.
 295833 while(!check_slice_end(r, s)) {
1477 294440 s->dest[0] += 16;
1478 294440 s->dest[1] += 8;
1479 294440 s->dest[2] += 8;
1480
1481
2/2
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✓ Branch 1 taken 7640 times.
 294440 if(r->si.type)
1482 286800 res = rv34_decode_inter_macroblock(r, r->intra_types + s->mb_x * 4 + 4);
1483 else
1484 7640 res = rv34_decode_intra_macroblock(r, r->intra_types + s->mb_x * 4 + 4);
1485
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 294440 if(res < 0){
1486 ✗ ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_MB_ERROR);
1487 ✗ return -1;
1488 }
1489
2/2
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✓ Branch 1 taken 284972 times.
 294440 if (++s->mb_x == s->mb_width) {
1490 9468 s->mb_x = 0;
1491 9468 s->mb_y++;
1492 9468 ff_init_block_index(s);
1493
1494 9468 memmove(r->intra_types_hist, r->intra_types, r->intra_types_stride * 4 * sizeof(*r->intra_types_hist));
1495 9468 memset(r->intra_types, -1, r->intra_types_stride * 4 * sizeof(*r->intra_types_hist));
1496
1497
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✗ Branch 1 not taken.
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 9468 if(r->loop_filter && s->mb_y >= 2)
1498 8939 r->loop_filter(r, s->mb_y - 2);
1499
1500
1/2
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✓ Branch 1 taken 9468 times.
 9468 if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME))
1501 ✗ ff_thread_progress_report(&s->cur_pic.ptr->progress,
1502 ✗ s->mb_y - 2);
1503
1504 }
1505
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 294440 if(s->mb_x == s->resync_mb_x)
1506 9089 s->first_slice_line=0;
1507 294440 r->mb_num_left--;
1508 }
1509 1393 ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_MB_END);
1510
1511 1393 return s->mb_y == s->mb_height;
1512 }
1513
1514 /** @} */ // reconstruction group end
1515
1516 /**
1517 * Initialize decoder.
1518 */
1519 9 av_cold int ff_rv34_decode_init(AVCodecContext *avctx)
1520 {
1521 static AVOnce init_static_once = AV_ONCE_INIT;
1522 9 RV34DecContext *r = avctx->priv_data;
1523 9 MpegEncContext *s = &r->s;
1524 int ret;
1525
1526 9 ret = ff_mpv_decode_init(s, avctx);
1527
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 9 if (ret < 0)
1528 ✗ return ret;
1529 9 s->out_format = FMT_H263;
1530
1531 9 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
1532 9 avctx->has_b_frames = 1;
1533 9 s->low_delay = 0;
1534
1535
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 9 if ((ret = ff_mpv_common_init(s)) < 0)
1536 ✗ return ret;
1537
1538 9 ff_h264_pred_init(&r->h, AV_CODEC_ID_RV40, 8, 1);
1539
1540 9 ret = rv34_decoder_alloc(r);
1541
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 9 if (ret < 0)
1542 ✗ return ret;
1543
1544 9 ff_thread_once(&init_static_once, rv34_init_tables);
1545
1546 9 return 0;
1547 }
1548
1549 ✗ int ff_rv34_decode_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1550 {
1551 ✗ RV34DecContext *r = dst->priv_data, *r1 = src->priv_data;
1552 ✗ MpegEncContext *const s1 = &r1->s;
1553 int ret;
1554
1555 ✗ if (dst == src || !s1->context_initialized)
1556 ✗ return 0;
1557
1558 ✗ ret = ff_mpeg_update_thread_context(dst, src);
1559 ✗ if (ret < 0)
1560 ✗ return ret;
1561
1562 // Did ff_mpeg_update_thread_context reinit?
1563 ✗ if (ret > 0) {
1564 ✗ ret = rv34_decoder_realloc(r);
1565 ✗ if (ret < 0)
1566 ✗ return ret;
1567 }
1568
1569 ✗ r->cur_pts = r1->cur_pts;
1570 ✗ r->last_pts = r1->last_pts;
1571 ✗ r->next_pts = r1->next_pts;
1572
1573 ✗ memset(&r->si, 0, sizeof(r->si));
1574
1575 ✗ return 0;
1576 }
1577
1578 4180 static int get_slice_offset(AVCodecContext *avctx, const uint8_t *buf, int n, int slice_count, int buf_size)
1579 {
1580
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 4180 if (n < slice_count) {
1581
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 3291 return AV_RL32(buf + n*8 - 4) == 1 ? AV_RL32(buf + n*8) : AV_RB32(buf + n*8);
1582 } else
1583 889 return buf_size;
1584 }
1585
1586 529 static int finish_frame(AVCodecContext *avctx, AVFrame *pict)
1587 {
1588 529 RV34DecContext *r = avctx->priv_data;
1589 529 MpegEncContext *s = &r->s;
1590 529 int got_picture = 0, ret;
1591
1592 529 ff_er_frame_end(&s->er, NULL);
1593 529 ff_mpv_frame_end(s);
1594 529 r->mb_num_left = 0;
1595
1596
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 529 if (s->pict_type == AV_PICTURE_TYPE_B) {
1597
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 389 if ((ret = av_frame_ref(pict, s->cur_pic.ptr->f)) < 0)
1598 ✗ return ret;
1599 389 ff_print_debug_info(s, s->cur_pic.ptr, pict);
1600 389 ff_mpv_export_qp_table(s, pict, s->cur_pic.ptr, FF_MPV_QSCALE_TYPE_MPEG1);
1601 389 got_picture = 1;
1602
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 140 } else if (s->last_pic.ptr) {
1603
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 131 if ((ret = av_frame_ref(pict, s->last_pic.ptr->f)) < 0)
1604 ✗ return ret;
1605 131 ff_print_debug_info(s, s->last_pic.ptr, pict);
1606 131 ff_mpv_export_qp_table(s, pict, s->last_pic.ptr, FF_MPV_QSCALE_TYPE_MPEG1);
1607 131 got_picture = 1;
1608 }
1609
1610 529 return got_picture;
1611 }
1612
1613 ✗ static AVRational update_sar(int old_w, int old_h, AVRational sar, int new_w, int new_h)
1614 {
1615 // attempt to keep aspect during typical resolution switches
1616 ✗ if (!sar.num)
1617 ✗ sar = (AVRational){1, 1};
1618
1619 ✗ sar = av_mul_q(sar, av_mul_q((AVRational){new_h, new_w}, (AVRational){old_w, old_h}));
1620 ✗ return sar;
1621 }
1622
1623 533 int ff_rv34_decode_frame(AVCodecContext *avctx, AVFrame *pict,
1624 int *got_picture_ptr, AVPacket *avpkt)
1625 {
1626 533 const uint8_t *buf = avpkt->data;
1627 533 int buf_size = avpkt->size;
1628 533 RV34DecContext *r = avctx->priv_data;
1629 533 MpegEncContext *s = &r->s;
1630 SliceInfo si;
1631 int i, ret;
1632 int slice_count;
1633 533 const uint8_t *slices_hdr = NULL;
1634 533 int last = 0;
1635 533 int faulty_b = 0;
1636 int offset;
1637
1638 /* no supplementary picture */
1639
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 533 if (buf_size == 0) {
1640 /* special case for last picture */
1641
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 4 if (s->next_pic.ptr) {
1642
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 2 if ((ret = av_frame_ref(pict, s->next_pic.ptr->f)) < 0)
1643 ✗ return ret;
1644 2 ff_mpv_unref_picture(&s->next_pic);
1645
1646 2 *got_picture_ptr = 1;
1647 }
1648 4 return 0;
1649 }
1650
1651 529 slice_count = (*buf++) + 1;
1652 529 slices_hdr = buf + 4;
1653 529 buf += 8 * slice_count;
1654 529 buf_size -= 1 + 8 * slice_count;
1655
1656 529 offset = get_slice_offset(avctx, slices_hdr, 0, slice_count, buf_size);
1657 //parse first slice header to check whether this frame can be decoded
1658
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 529 if(offset < 0 || offset > buf_size){
1659 ✗ av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n");
1660 ✗ return AVERROR_INVALIDDATA;
1661 }
1662 529 init_get_bits(&r->gb, buf+offset, (buf_size-offset)*8);
1663
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 529 if (r->parse_slice_header(r, &r->gb, &si) < 0 || si.start) {
1664 ✗ av_log(avctx, AV_LOG_ERROR, "First slice header is incorrect\n");
1665 ✗ return AVERROR_INVALIDDATA;
1666 }
1667
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 529 if (!s->last_pic.ptr && si.type == AV_PICTURE_TYPE_B) {
1668 ✗ av_log(avctx, AV_LOG_ERROR, "Invalid decoder state: B-frame without "
1669 "reference data.\n");
1670 ✗ faulty_b = 1;
1671 }
1672
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 529 if( (avctx->skip_frame >= AVDISCARD_NONREF && si.type==AV_PICTURE_TYPE_B)
1673
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 529 || (avctx->skip_frame >= AVDISCARD_NONKEY && si.type!=AV_PICTURE_TYPE_I)
1674
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 529 || avctx->skip_frame >= AVDISCARD_ALL)
1675 ✗ return avpkt->size;
1676
1677 /* first slice */
1678
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 529 if (si.start == 0) {
1679
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 529 if (r->mb_num_left > 0 && s->cur_pic.ptr) {
1680 ✗ av_log(avctx, AV_LOG_ERROR, "New frame but still %d MB left.\n",
1681 r->mb_num_left);
1682 ✗ if (!s->context_reinit)
1683 ✗ ff_er_frame_end(&s->er, NULL);
1684 ✗ ff_mpv_frame_end(s);
1685 }
1686
1687
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 529 if (s->width != si.width || s->height != si.height || s->context_reinit) {
1688 int err;
1689
1690 ✗ av_log(s->avctx, AV_LOG_WARNING, "Changing dimensions to %dx%d\n",
1691 si.width, si.height);
1692
1693 ✗ if (av_image_check_size(si.width, si.height, 0, s->avctx))
1694 ✗ return AVERROR_INVALIDDATA;
1695
1696 ✗ s->avctx->sample_aspect_ratio = update_sar(
1697 ✗ s->width, s->height, s->avctx->sample_aspect_ratio,
1698 si.width, si.height);
1699 ✗ s->width = si.width;
1700 ✗ s->height = si.height;
1701
1702 ✗ err = ff_set_dimensions(s->avctx, s->width, s->height);
1703 ✗ if (err < 0)
1704 ✗ return err;
1705 ✗ if ((err = ff_mpv_common_frame_size_change(s)) < 0)
1706 ✗ return err;
1707 ✗ if ((err = rv34_decoder_realloc(r)) < 0)
1708 ✗ return err;
1709 }
1710
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 529 if (faulty_b)
1711 ✗ return AVERROR_INVALIDDATA;
1712
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 529 s->pict_type = si.type ? si.type : AV_PICTURE_TYPE_I;
1713
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 529 if (ff_mpv_frame_start(s, s->avctx) < 0)
1714 ✗ return -1;
1715 529 ff_mpeg_er_frame_start(s);
1716
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 529 if (!r->tmp_b_block_base) {
1717 int i;
1718
1719 9 r->tmp_b_block_base = av_malloc(s->linesize * 48);
1720
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 9 if (!r->tmp_b_block_base)
1721 ✗ return AVERROR(ENOMEM);
1722
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 27 for (i = 0; i < 2; i++)
1723 18 r->tmp_b_block_y[i] = r->tmp_b_block_base
1724 18 + i * 16 * s->linesize;
1725
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 45 for (i = 0; i < 4; i++)
1726 36 r->tmp_b_block_uv[i] = r->tmp_b_block_base + 32 * s->linesize
1727 36 + (i >> 1) * 8 * s->uvlinesize
1728 36 + (i & 1) * 16;
1729 }
1730 529 r->cur_pts = si.pts;
1731
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 529 if (s->pict_type != AV_PICTURE_TYPE_B) {
1732 140 r->last_pts = r->next_pts;
1733 140 r->next_pts = r->cur_pts;
1734 } else {
1735 389 int refdist = GET_PTS_DIFF(r->next_pts, r->last_pts);
1736 389 int dist0 = GET_PTS_DIFF(r->cur_pts, r->last_pts);
1737 389 int dist1 = GET_PTS_DIFF(r->next_pts, r->cur_pts);
1738
1739
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 389 if(!refdist){
1740 ✗ r->mv_weight1 = r->mv_weight2 = r->weight1 = r->weight2 = 8192;
1741 ✗ r->scaled_weight = 0;
1742 }else{
1743
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 389 if (FFMAX(dist0, dist1) > refdist)
1744 ✗ av_log(avctx, AV_LOG_TRACE, "distance overflow\n");
1745
1746 389 r->mv_weight1 = (dist0 << 14) / refdist;
1747 389 r->mv_weight2 = (dist1 << 14) / refdist;
1748
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 389 if((r->mv_weight1|r->mv_weight2) & 511){
1749 351 r->weight1 = r->mv_weight1;
1750 351 r->weight2 = r->mv_weight2;
1751 351 r->scaled_weight = 0;
1752 }else{
1753 38 r->weight1 = r->mv_weight1 >> 9;
1754 38 r->weight2 = r->mv_weight2 >> 9;
1755 38 r->scaled_weight = 1;
1756 }
1757 }
1758 }
1759 529 s->mb_x = s->mb_y = 0;
1760 529 ff_thread_finish_setup(s->avctx);
1761 ✗ } else if (s->context_reinit) {
1762 ✗ av_log(s->avctx, AV_LOG_ERROR, "Decoder needs full frames to "
1763 "reinitialize (start MB is %d).\n", si.start);
1764 ✗ return AVERROR_INVALIDDATA;
1765 ✗ } else if (HAVE_THREADS &&
1766 ✗ (s->avctx->active_thread_type & FF_THREAD_FRAME)) {
1767 ✗ av_log(s->avctx, AV_LOG_ERROR, "Decoder needs full frames in frame "
1768 "multithreading mode (start MB is %d).\n", si.start);
1769 ✗ return AVERROR_INVALIDDATA;
1770 }
1771
1772
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 1393 for(i = 0; i < slice_count; i++){
1773 1393 int offset = get_slice_offset(avctx, slices_hdr, i , slice_count, buf_size);
1774 1393 int offset1 = get_slice_offset(avctx, slices_hdr, i+1, slice_count, buf_size);
1775 int size;
1776
1777
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 1393 if(offset < 0 || offset > offset1 || offset1 > buf_size){
1778 ✗ av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n");
1779 ✗ break;
1780 }
1781 1393 size = offset1 - offset;
1782
1783 1393 r->si.end = s->mb_width * s->mb_height;
1784 1393 r->mb_num_left = r->s.mb_x + r->s.mb_y*r->s.mb_width - r->si.start;
1785
1786
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 1393 if(i+1 < slice_count){
1787 865 int offset2 = get_slice_offset(avctx, slices_hdr, i+2, slice_count, buf_size);
1788
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 865 if (offset2 < offset1 || offset2 > buf_size) {
1789 ✗ av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n");
1790 ✗ break;
1791 }
1792 865 init_get_bits(&r->gb, buf+offset1, (buf_size-offset1)*8);
1793
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 865 if (r->parse_slice_header(r, &r->gb, &si) < 0) {
1794 1 size = offset2 - offset;
1795 }else
1796 864 r->si.end = si.start;
1797 }
1798
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 1393 av_assert0 (size >= 0 && size <= buf_size - offset);
1799 1393 last = rv34_decode_slice(r, r->si.end, buf + offset, size);
1800
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 1393 if(last)
1801 529 break;
1802 }
1803
1804
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 529 if (s->cur_pic.ptr) {
1805
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 529 if (last) {
1806
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 529 if(r->loop_filter)
1807 529 r->loop_filter(r, s->mb_height - 1);
1808
1809 529 ret = finish_frame(avctx, pict);
1810
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 529 if (ret < 0)
1811 ✗ return ret;
1812 529 *got_picture_ptr = ret;
1813 ✗ } else if (HAVE_THREADS &&
1814 ✗ (s->avctx->active_thread_type & FF_THREAD_FRAME)) {
1815 ✗ av_log(avctx, AV_LOG_INFO, "marking unfinished frame as finished\n");
1816 /* always mark the current frame as finished, frame-mt supports
1817 * only complete frames */
1818 ✗ ff_er_frame_end(&s->er, NULL);
1819 ✗ ff_mpv_frame_end(s);
1820 ✗ r->mb_num_left = 0;
1821 ✗ return AVERROR_INVALIDDATA;
1822 }
1823 }
1824
1825 529 return avpkt->size;
1826 }
1827
1828 9 av_cold int ff_rv34_decode_end(AVCodecContext *avctx)
1829 {
1830 9 RV34DecContext *r = avctx->priv_data;
1831
1832 9 rv34_decoder_free(r);
1833
1834 9 return ff_mpv_decode_close(avctx);
1835 }
1836