FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/h264_cavlc.c
Date: 2025-07-11 09:13:03
Exec Total Coverage
Lines: 451 501 90.0%
Functions: 7 7 100.0%
Branches: 348 384 90.6%
Line Branch Exec Source
1 /*
2 * H.26L/H.264/AVC/JVT/14496-10/... cavlc bitstream decoding
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
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 * H.264 / AVC / MPEG-4 part10 cavlc bitstream decoding.
25 * @author Michael Niedermayer <michaelni@gmx.at>
26 */
27
28 #define CABAC(h) 0
29 #define UNCHECKED_BITSTREAM_READER 1
30
31 #include "h264dec.h"
32 #include "h264_mvpred.h"
33 #include "h264data.h"
34 #include "golomb.h"
35 #include "mpegutils.h"
36 #include "libavutil/avassert.h"
37
38
39 static const uint8_t golomb_to_inter_cbp_gray[16]={
40 0, 1, 2, 4, 8, 3, 5,10,12,15, 7,11,13,14, 6, 9,
41 };
42
43 static const uint8_t golomb_to_intra4x4_cbp_gray[16]={
44 15, 0, 7,11,13,14, 3, 5,10,12, 1, 2, 4, 8, 6, 9,
45 };
46
47 static const uint8_t chroma_dc_coeff_token_len[4*5]={
48 2, 0, 0, 0,
49 6, 1, 0, 0,
50 6, 6, 3, 0,
51 6, 7, 7, 6,
52 6, 8, 8, 7,
53 };
54
55 static const uint8_t chroma_dc_coeff_token_bits[4*5]={
56 1, 0, 0, 0,
57 7, 1, 0, 0,
58 4, 6, 1, 0,
59 3, 3, 2, 5,
60 2, 3, 2, 0,
61 };
62
63 static const uint8_t chroma422_dc_coeff_token_len[4*9]={
64 1, 0, 0, 0,
65 7, 2, 0, 0,
66 7, 7, 3, 0,
67 9, 7, 7, 5,
68 9, 9, 7, 6,
69 10, 10, 9, 7,
70 11, 11, 10, 7,
71 12, 12, 11, 10,
72 13, 12, 12, 11,
73 };
74
75 static const uint8_t chroma422_dc_coeff_token_bits[4*9]={
76 1, 0, 0, 0,
77 15, 1, 0, 0,
78 14, 13, 1, 0,
79 7, 12, 11, 1,
80 6, 5, 10, 1,
81 7, 6, 4, 9,
82 7, 6, 5, 8,
83 7, 6, 5, 4,
84 7, 5, 4, 4,
85 };
86
87 static const uint8_t coeff_token_len[4][4*17]={
88 {
89 1, 0, 0, 0,
90 6, 2, 0, 0, 8, 6, 3, 0, 9, 8, 7, 5, 10, 9, 8, 6,
91 11,10, 9, 7, 13,11,10, 8, 13,13,11, 9, 13,13,13,10,
92 14,14,13,11, 14,14,14,13, 15,15,14,14, 15,15,15,14,
93 16,15,15,15, 16,16,16,15, 16,16,16,16, 16,16,16,16,
94 },
95 {
96 2, 0, 0, 0,
97 6, 2, 0, 0, 6, 5, 3, 0, 7, 6, 6, 4, 8, 6, 6, 4,
98 8, 7, 7, 5, 9, 8, 8, 6, 11, 9, 9, 6, 11,11,11, 7,
99 12,11,11, 9, 12,12,12,11, 12,12,12,11, 13,13,13,12,
100 13,13,13,13, 13,14,13,13, 14,14,14,13, 14,14,14,14,
101 },
102 {
103 4, 0, 0, 0,
104 6, 4, 0, 0, 6, 5, 4, 0, 6, 5, 5, 4, 7, 5, 5, 4,
105 7, 5, 5, 4, 7, 6, 6, 4, 7, 6, 6, 4, 8, 7, 7, 5,
106 8, 8, 7, 6, 9, 8, 8, 7, 9, 9, 8, 8, 9, 9, 9, 8,
107 10, 9, 9, 9, 10,10,10,10, 10,10,10,10, 10,10,10,10,
108 },
109 {
110 6, 0, 0, 0,
111 6, 6, 0, 0, 6, 6, 6, 0, 6, 6, 6, 6, 6, 6, 6, 6,
112 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
113 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
114 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
115 }
116 };
117
118 static const uint8_t coeff_token_bits[4][4*17]={
119 {
120 1, 0, 0, 0,
121 5, 1, 0, 0, 7, 4, 1, 0, 7, 6, 5, 3, 7, 6, 5, 3,
122 7, 6, 5, 4, 15, 6, 5, 4, 11,14, 5, 4, 8,10,13, 4,
123 15,14, 9, 4, 11,10,13,12, 15,14, 9,12, 11,10,13, 8,
124 15, 1, 9,12, 11,14,13, 8, 7,10, 9,12, 4, 6, 5, 8,
125 },
126 {
127 3, 0, 0, 0,
128 11, 2, 0, 0, 7, 7, 3, 0, 7,10, 9, 5, 7, 6, 5, 4,
129 4, 6, 5, 6, 7, 6, 5, 8, 15, 6, 5, 4, 11,14,13, 4,
130 15,10, 9, 4, 11,14,13,12, 8,10, 9, 8, 15,14,13,12,
131 11,10, 9,12, 7,11, 6, 8, 9, 8,10, 1, 7, 6, 5, 4,
132 },
133 {
134 15, 0, 0, 0,
135 15,14, 0, 0, 11,15,13, 0, 8,12,14,12, 15,10,11,11,
136 11, 8, 9,10, 9,14,13, 9, 8,10, 9, 8, 15,14,13,13,
137 11,14,10,12, 15,10,13,12, 11,14, 9,12, 8,10,13, 8,
138 13, 7, 9,12, 9,12,11,10, 5, 8, 7, 6, 1, 4, 3, 2,
139 },
140 {
141 3, 0, 0, 0,
142 0, 1, 0, 0, 4, 5, 6, 0, 8, 9,10,11, 12,13,14,15,
143 16,17,18,19, 20,21,22,23, 24,25,26,27, 28,29,30,31,
144 32,33,34,35, 36,37,38,39, 40,41,42,43, 44,45,46,47,
145 48,49,50,51, 52,53,54,55, 56,57,58,59, 60,61,62,63,
146 }
147 };
148
149 static const uint8_t total_zeros_len[16][16]= {
150 {1,3,3,4,4,5,5,6,6,7,7,8,8,9,9,9},
151 {3,3,3,3,3,4,4,4,4,5,5,6,6,6,6},
152 {4,3,3,3,4,4,3,3,4,5,5,6,5,6},
153 {5,3,4,4,3,3,3,4,3,4,5,5,5},
154 {4,4,4,3,3,3,3,3,4,5,4,5},
155 {6,5,3,3,3,3,3,3,4,3,6},
156 {6,5,3,3,3,2,3,4,3,6},
157 {6,4,5,3,2,2,3,3,6},
158 {6,6,4,2,2,3,2,5},
159 {5,5,3,2,2,2,4},
160 {4,4,3,3,1,3},
161 {4,4,2,1,3},
162 {3,3,1,2},
163 {2,2,1},
164 {1,1},
165 };
166
167 static const uint8_t total_zeros_bits[16][16]= {
168 {1,3,2,3,2,3,2,3,2,3,2,3,2,3,2,1},
169 {7,6,5,4,3,5,4,3,2,3,2,3,2,1,0},
170 {5,7,6,5,4,3,4,3,2,3,2,1,1,0},
171 {3,7,5,4,6,5,4,3,3,2,2,1,0},
172 {5,4,3,7,6,5,4,3,2,1,1,0},
173 {1,1,7,6,5,4,3,2,1,1,0},
174 {1,1,5,4,3,3,2,1,1,0},
175 {1,1,1,3,3,2,2,1,0},
176 {1,0,1,3,2,1,1,1},
177 {1,0,1,3,2,1,1},
178 {0,1,1,2,1,3},
179 {0,1,1,1,1},
180 {0,1,1,1},
181 {0,1,1},
182 {0,1},
183 };
184
185 static const uint8_t chroma_dc_total_zeros_len[3][4]= {
186 { 1, 2, 3, 3,},
187 { 1, 2, 2, 0,},
188 { 1, 1, 0, 0,},
189 };
190
191 static const uint8_t chroma_dc_total_zeros_bits[3][4]= {
192 { 1, 1, 1, 0,},
193 { 1, 1, 0, 0,},
194 { 1, 0, 0, 0,},
195 };
196
197 static const uint8_t chroma422_dc_total_zeros_len[7][8]= {
198 { 1, 3, 3, 4, 4, 4, 5, 5 },
199 { 3, 2, 3, 3, 3, 3, 3 },
200 { 3, 3, 2, 2, 3, 3 },
201 { 3, 2, 2, 2, 3 },
202 { 2, 2, 2, 2 },
203 { 2, 2, 1 },
204 { 1, 1 },
205 };
206
207 static const uint8_t chroma422_dc_total_zeros_bits[7][8]= {
208 { 1, 2, 3, 2, 3, 1, 1, 0 },
209 { 0, 1, 1, 4, 5, 6, 7 },
210 { 0, 1, 1, 2, 6, 7 },
211 { 6, 0, 1, 2, 7 },
212 { 0, 1, 2, 3 },
213 { 0, 1, 1 },
214 { 0, 1 },
215 };
216
217 static const uint8_t run_len[7][16]={
218 {1,1},
219 {1,2,2},
220 {2,2,2,2},
221 {2,2,2,3,3},
222 {2,2,3,3,3,3},
223 {2,3,3,3,3,3,3},
224 {3,3,3,3,3,3,3,4,5,6,7,8,9,10,11},
225 };
226
227 static const uint8_t run_bits[7][16]={
228 {1,0},
229 {1,1,0},
230 {3,2,1,0},
231 {3,2,1,1,0},
232 {3,2,3,2,1,0},
233 {3,0,1,3,2,5,4},
234 {7,6,5,4,3,2,1,1,1,1,1,1,1,1,1},
235 };
236
237 #define LEVEL_TAB_BITS 8
238 static int8_t cavlc_level_tab[7][1<<LEVEL_TAB_BITS][2];
239
240 #define CHROMA_DC_COEFF_TOKEN_VLC_BITS 8
241 #define CHROMA422_DC_COEFF_TOKEN_VLC_BITS 13
242 #define COEFF_TOKEN_VLC_BITS 8
243 #define TOTAL_ZEROS_VLC_BITS 9
244 #define CHROMA_DC_TOTAL_ZEROS_VLC_BITS 3
245 #define CHROMA422_DC_TOTAL_ZEROS_VLC_BITS 5
246 #define RUN_VLC_BITS 3
247 #define RUN7_VLC_BITS 6
248
249 /// 17 pointers to only four different VLCs
250 static const VLCElem *coeff_token_vlc[17];
251
252 static VLCElem chroma_dc_coeff_token_vlc_table[256];
253
254 static VLCElem chroma422_dc_coeff_token_vlc_table[1 << CHROMA422_DC_COEFF_TOKEN_VLC_BITS];
255
256 static const VLCElem *total_zeros_vlc[15+1];
257
258 static const VLCElem *chroma_dc_total_zeros_vlc[3+1];
259
260 static const VLCElem *chroma422_dc_total_zeros_vlc[7+1];
261
262 static const VLCElem *run_vlc[6+1];
263
264 // The other pointers to VLCElem point into this array.
265 static VLCElem run7_vlc_table[96 + (6 << RUN_VLC_BITS)
266 + (15 << TOTAL_ZEROS_VLC_BITS)
267 + (3 << CHROMA_DC_TOTAL_ZEROS_VLC_BITS)
268 + (7 << CHROMA422_DC_TOTAL_ZEROS_VLC_BITS)
269 + (520 + 332 + 280 + 256) /* coeff token */];
270
271 /**
272 * Get the predicted number of non-zero coefficients.
273 * @param n block index
274 */
275 43048753 static inline int pred_non_zero_count(const H264Context *h, const H264SliceContext *sl, int n)
276 {
277 43048753 const int index8= scan8[n];
278 43048753 const int left = sl->non_zero_count_cache[index8 - 1];
279 43048753 const int top = sl->non_zero_count_cache[index8 - 8];
280 43048753 int i= left + top;
281
282
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 43048753 if(i<64) i= (i+1)>>1;
283
284 ff_tlog(h->avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
285
286 43048753 return i&31;
287 }
288
289 329 static av_cold void init_cavlc_level_tab(void){
290 int suffix_length;
291 unsigned int i;
292
293
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 2632 for(suffix_length=0; suffix_length<7; suffix_length++){
294
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 591871 for(i=0; i<(1<<LEVEL_TAB_BITS); i++){
295 589568 int prefix= LEVEL_TAB_BITS - av_log2(2*i);
296
297
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 589568 if(prefix + 1 + suffix_length <= LEVEL_TAB_BITS){
298 547785 int level_code = (prefix << suffix_length) +
299 547785 (i >> (av_log2(i) - suffix_length)) - (1 << suffix_length);
300 547785 int mask = -(level_code&1);
301 547785 level_code = (((2 + level_code) >> 1) ^ mask) - mask;
302 547785 cavlc_level_tab[suffix_length][i][0]= level_code;
303 547785 cavlc_level_tab[suffix_length][i][1]= prefix + 1 + suffix_length;
304
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 41783 }else if(prefix + 1 <= LEVEL_TAB_BITS){
305 39480 cavlc_level_tab[suffix_length][i][0]= prefix+100;
306 39480 cavlc_level_tab[suffix_length][i][1]= prefix + 1;
307 }else{
308 2303 cavlc_level_tab[suffix_length][i][0]= LEVEL_TAB_BITS+100;
309 2303 cavlc_level_tab[suffix_length][i][1]= LEVEL_TAB_BITS;
310 }
311 }
312 }
313 329 }
314
315 329 av_cold void ff_h264_decode_init_vlc(void)
316 {
317 const VLCElem *coeff_token_vlc_original[4];
318 329 VLCInitState state = VLC_INIT_STATE(run7_vlc_table);
319
320 329 VLC_INIT_STATIC_TABLE(chroma_dc_coeff_token_vlc_table,
321 CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4 * 5,
322 &chroma_dc_coeff_token_len [0], 1, 1,
323 &chroma_dc_coeff_token_bits[0], 1, 1, 0);
324
325 329 VLC_INIT_STATIC_TABLE(chroma422_dc_coeff_token_vlc_table,
326 CHROMA422_DC_COEFF_TOKEN_VLC_BITS, 4 * 9,
327 &chroma422_dc_coeff_token_len [0], 1, 1,
328 &chroma422_dc_coeff_token_bits[0], 1, 1, 0);
329
330 329 ff_vlc_init_tables(&state, RUN7_VLC_BITS, 16,
331 &run_len [6][0], 1, 1,
332 &run_bits[6][0], 1, 1, 0);
333
334
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 2303 for (int i = 0; i < 6; i++) {
335 1974 run_vlc[i + 1] = ff_vlc_init_tables(&state, RUN_VLC_BITS, 7,
336 1974 &run_len [i][0], 1, 1,
337 1974 &run_bits[i][0], 1, 1, 0);
338 }
339
340
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 1645 for (int i = 0; i < 4; i++) {
341 1316 coeff_token_vlc_original[i] =
342 1316 ff_vlc_init_tables(&state, COEFF_TOKEN_VLC_BITS, 4*17,
343 1316 &coeff_token_len [i][0], 1, 1,
344 1316 &coeff_token_bits[i][0], 1, 1, 0);
345 }
346
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 5922 for (int i = 0; i < FF_ARRAY_ELEMS(coeff_token_vlc); i++) {
347 static const uint8_t coeff_token_table_index[17] = {
348 0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3
349 };
350 5593 coeff_token_vlc[i] = coeff_token_vlc_original[coeff_token_table_index[i]];
351 }
352
353
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 1316 for (int i = 0; i < 3; i++) {
354 987 chroma_dc_total_zeros_vlc[i + 1] =
355 987 ff_vlc_init_tables(&state, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4,
356 987 &chroma_dc_total_zeros_len [i][0], 1, 1,
357 987 &chroma_dc_total_zeros_bits[i][0], 1, 1, 0);
358 }
359
360
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 2632 for (int i = 0; i < 7; i++) {
361 2303 chroma422_dc_total_zeros_vlc[i + 1] =
362 2303 ff_vlc_init_tables(&state, CHROMA422_DC_TOTAL_ZEROS_VLC_BITS, 8,
363 2303 &chroma422_dc_total_zeros_len [i][0], 1, 1,
364 2303 &chroma422_dc_total_zeros_bits[i][0], 1, 1, 0);
365 }
366
367
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 5264 for (int i = 0; i < 15; i++) {
368 4935 total_zeros_vlc[i + 1] =
369 4935 ff_vlc_init_tables(&state, TOTAL_ZEROS_VLC_BITS, 16,
370 4935 &total_zeros_len [i][0], 1, 1,
371 4935 &total_zeros_bits[i][0], 1, 1, 0);
372 }
373 /*
374 * This is a one time safety check to make sure that
375 * the vlc table sizes were initialized correctly.
376 */
377 av_assert1(state.size == 0);
378
379 329 init_cavlc_level_tab();
380 329 }
381
382 705405 static inline int get_level_prefix(GetBitContext *gb){
383 unsigned int buf;
384 int log;
385
386 705405 OPEN_READER(re, gb);
387 705405 UPDATE_CACHE(re, gb);
388 705405 buf=GET_CACHE(re, gb);
389
390 705405 log= 32 - av_log2(buf);
391
392 705405 LAST_SKIP_BITS(re, gb, log);
393 705405 CLOSE_READER(re, gb);
394
395 705405 return log-1;
396 }
397
398 /**
399 * Decode a residual block.
400 * @param n block index
401 * @param scantable scantable
402 * @param max_coeff number of coefficients in the block
403 * @return <0 if an error occurred
404 */
405 46339387 static int decode_residual(const H264Context *h, H264SliceContext *sl,
406 GetBitContext *gb, int16_t *block, int n,
407 const uint8_t *scantable, const uint32_t *qmul,
408 int max_coeff)
409 {
410 int level[16];
411 int zeros_left, coeff_token, total_coeff, i, trailing_ones, run_before;
412
413 //FIXME put trailing_onex into the context
414
415
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 46339387 if(max_coeff <= 8){
416
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 3290634 if (max_coeff == 4)
417 2711576 coeff_token = get_vlc2(gb, chroma_dc_coeff_token_vlc_table,
418 CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
419 else
420 579058 coeff_token = get_vlc2(gb, chroma422_dc_coeff_token_vlc_table,
421 CHROMA422_DC_COEFF_TOKEN_VLC_BITS, 1);
422 }else{
423
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 43346326 total_coeff = pred_non_zero_count(h, sl, n >= LUMA_DC_BLOCK_INDEX ?
424 297573 (n - LUMA_DC_BLOCK_INDEX) * 16 : n);
425 43048753 coeff_token = get_vlc2(gb, coeff_token_vlc[total_coeff],
426 COEFF_TOKEN_VLC_BITS, 2);
427 }
428 46339387 total_coeff = coeff_token >> 2;
429 46339387 sl->non_zero_count_cache[scan8[n]] = total_coeff;
430
431 //FIXME set last_non_zero?
432
433
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 46339387 if(total_coeff==0)
434 16170031 return 0;
435
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 30169356 if(total_coeff > (unsigned)max_coeff) {
436 ✗ av_log(h->avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", sl->mb_x, sl->mb_y, total_coeff);
437 ✗ return -1;
438 }
439
440 30169356 trailing_ones= coeff_token&3;
441 ff_tlog(h->avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff);
442 av_assert2(total_coeff<=16);
443
444 30169356 i = show_bits(gb, 3);
445 30169356 skip_bits(gb, trailing_ones);
446 30169356 level[0] = 1-((i&4)>>1);
447 30169356 level[1] = 1-((i&2) );
448 30169356 level[2] = 1-((i&1)<<1);
449
450
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 30169356 if(trailing_ones<total_coeff) {
451 int mask, prefix;
452 13662905 int suffix_length = total_coeff > 10 & trailing_ones < 3;
453 13662905 int bitsi= show_bits(gb, LEVEL_TAB_BITS);
454 13662905 int level_code= cavlc_level_tab[suffix_length][bitsi][0];
455
456 13662905 skip_bits(gb, cavlc_level_tab[suffix_length][bitsi][1]);
457
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 13662905 if(level_code >= 100){
458 313228 prefix= level_code - 100;
459
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 313228 if(prefix == LEVEL_TAB_BITS)
460 309353 prefix += get_level_prefix(gb);
461
462 //first coefficient has suffix_length equal to 0 or 1
463
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 313228 if(prefix<14){ //FIXME try to build a large unified VLC table for all this
464
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 190100 if(suffix_length)
465 12509 level_code= (prefix<<1) + get_bits1(gb); //part
466 else
467 177591 level_code= prefix; //part
468
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 123128 }else if(prefix==14){
469
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 56849 if(suffix_length)
470 536 level_code= (prefix<<1) + get_bits1(gb); //part
471 else
472 56313 level_code= prefix + get_bits(gb, 4); //part
473 }else{
474 66279 level_code= 30;
475
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 66279 if(prefix>=16){
476
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 24 if(prefix > 25+3){
477 ✗ av_log(h->avctx, AV_LOG_ERROR, "Invalid level prefix\n");
478 ✗ return -1;
479 }
480 24 level_code += (1<<(prefix-3))-4096;
481 }
482 66279 level_code += get_bits(gb, prefix-3); //part
483 }
484
485
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 313228 if(trailing_ones < 3) level_code += 2;
486
487 313228 suffix_length = 2;
488 313228 mask= -(level_code&1);
489 313228 level[trailing_ones]= (((2+level_code)>>1) ^ mask) - mask;
490 }else{
491 13349677 level_code += ((level_code>>31)|1) & -(trailing_ones < 3);
492
493
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 13349677 suffix_length = 1 + (level_code + 3U > 6U);
494 13349677 level[trailing_ones]= level_code;
495 }
496
497 //remaining coefficients have suffix_length > 0
498
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 52627250 for(i=trailing_ones+1;i<total_coeff;i++) {
499 static const unsigned int suffix_limit[7] = {0,3,6,12,24,48,INT_MAX };
500 38964345 int bitsi= show_bits(gb, LEVEL_TAB_BITS);
501 38964345 level_code= cavlc_level_tab[suffix_length][bitsi][0];
502
503 38964345 skip_bits(gb, cavlc_level_tab[suffix_length][bitsi][1]);
504
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 38964345 if(level_code >= 100){
505 801371 prefix= level_code - 100;
506
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 801371 if(prefix == LEVEL_TAB_BITS){
507 396052 prefix += get_level_prefix(gb);
508 }
509
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 801371 if(prefix<15){
510 736110 level_code = (prefix<<suffix_length) + get_bits(gb, suffix_length);
511 }else{
512 65261 level_code = 15<<suffix_length;
513
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 65261 if (prefix>=16) {
514
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 4 if(prefix > 25+3){
515 ✗ av_log(h->avctx, AV_LOG_ERROR, "Invalid level prefix\n");
516 ✗ return AVERROR_INVALIDDATA;
517 }
518 4 level_code += (1<<(prefix-3))-4096;
519 }
520 65261 level_code += get_bits(gb, prefix-3);
521 }
522 801371 mask= -(level_code&1);
523 801371 level_code= (((2+level_code)>>1) ^ mask) - mask;
524 }
525 38964345 level[i]= level_code;
526 38964345 suffix_length+= suffix_limit[suffix_length] + level_code > 2U*suffix_limit[suffix_length];
527 }
528 }
529
530
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 30169356 if(total_coeff == max_coeff)
531 301280 zeros_left=0;
532 else{
533
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 29868076 if (max_coeff <= 8) {
534
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 1963787 if (max_coeff == 4)
535 1506405 zeros_left = get_vlc2(gb, chroma_dc_total_zeros_vlc[total_coeff],
536 CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1);
537 else
538 457382 zeros_left = get_vlc2(gb, chroma422_dc_total_zeros_vlc[total_coeff],
539 CHROMA422_DC_TOTAL_ZEROS_VLC_BITS, 1);
540 } else {
541 27904289 zeros_left = get_vlc2(gb, total_zeros_vlc[total_coeff],
542 TOTAL_ZEROS_VLC_BITS, 1);
543 }
544 }
545
546 #define STORE_BLOCK(type) \
547 scantable += zeros_left + total_coeff - 1; \
548 if(n >= LUMA_DC_BLOCK_INDEX){ \
549 ((type*)block)[*scantable] = level[0]; \
550 for(i=1;i<total_coeff && zeros_left > 0;i++) { \
551 if(zeros_left < 7) \
552 run_before = get_vlc2(gb, run_vlc[zeros_left], RUN_VLC_BITS, 1); \
553 else \
554 run_before = get_vlc2(gb, run7_vlc_table, RUN7_VLC_BITS, 2); \
555 zeros_left -= run_before; \
556 scantable -= 1 + run_before; \
557 ((type*)block)[*scantable]= level[i]; \
558 } \
559 for(;i<total_coeff;i++) { \
560 scantable--; \
561 ((type*)block)[*scantable]= level[i]; \
562 } \
563 }else{ \
564 ((type*)block)[*scantable] = ((int)(level[0] * qmul[*scantable] + 32))>>6; \
565 for(i=1;i<total_coeff && zeros_left > 0;i++) { \
566 if(zeros_left < 7) \
567 run_before = get_vlc2(gb, run_vlc[zeros_left], RUN_VLC_BITS, 1); \
568 else \
569 run_before = get_vlc2(gb, run7_vlc_table, RUN7_VLC_BITS, 2); \
570 zeros_left -= run_before; \
571 scantable -= 1 + run_before; \
572 ((type*)block)[*scantable]= ((int)(level[i] * qmul[*scantable] + 32))>>6; \
573 } \
574 for(;i<total_coeff;i++) { \
575 scantable--; \
576 ((type*)block)[*scantable]= ((int)(level[i] * qmul[*scantable] + 32))>>6; \
577 } \
578 }
579
580
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 30169356 if (h->pixel_shift) {
581
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✓ Branch 21 taken 9622897 times.
 37564146 STORE_BLOCK(int32_t)
582 } else {
583
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✓ Branch 16 taken 35412976 times.
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✓ Branch 18 taken 31190348 times.
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✓ Branch 21 taken 18201085 times.
 64512556 STORE_BLOCK(int16_t)
584 }
585
586
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 30169356 if(zeros_left<0){
587 ✗ av_log(h->avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", sl->mb_x, sl->mb_y);
588 ✗ return -1;
589 }
590
591 30169356 return 0;
592 }
593
594 static av_always_inline
595 2998031 int decode_luma_residual(const H264Context *h, H264SliceContext *sl,
596 GetBitContext *gb, const uint8_t *scan,
597 const uint8_t *scan8x8, int pixel_shift,
598 int mb_type, int cbp, int p)
599 {
600 int i4x4, i8x8;
601
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 2998031 int qscale = p == 0 ? sl->qscale : sl->chroma_qp[p - 1];
602
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 2998031 if(IS_INTRA16x16(mb_type)){
603 297573 AV_ZERO128(sl->mb_luma_dc[p]+0);
604 297573 AV_ZERO128(sl->mb_luma_dc[p]+8);
605 297573 AV_ZERO128(sl->mb_luma_dc[p]+16);
606 297573 AV_ZERO128(sl->mb_luma_dc[p]+24);
607
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✗ Branch 1 not taken.
✓ Branch 2 taken 297573 times.
 297573 if (decode_residual(h, sl, gb, sl->mb_luma_dc[p], LUMA_DC_BLOCK_INDEX + p, scan, NULL, 16) < 0) {
608 ✗ return -1; //FIXME continue if partitioned and other return -1 too
609 }
610
611 av_assert2((cbp&15) == 0 || (cbp&15) == 15);
612
613
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 297573 if(cbp&15){
614
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✓ Branch 1 taken 103735 times.
 518675 for(i8x8=0; i8x8<4; i8x8++){
615
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✓ Branch 1 taken 414940 times.
 2074700 for(i4x4=0; i4x4<4; i4x4++){
616 1659760 const int index= i4x4 + 4*i8x8 + p*16;
617
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✓ Branch 1 taken 1659760 times.
 1659760 if( decode_residual(h, sl, gb, sl->mb + (16*index << pixel_shift),
618 1659760 index, scan + 1, h->ps.pps->dequant4_coeff[p][qscale], 15) < 0 ){
619 ✗ return -1;
620 }
621 }
622 }
623 103735 return 0xf;
624 }else{
625 193838 fill_rectangle(&sl->non_zero_count_cache[scan8[p*16]], 4, 4, 8, 0, 1);
626 193838 return 0;
627 }
628 }else{
629
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✓ Branch 0 taken 1151757 times.
✓ Branch 1 taken 1548701 times.
 2700458 int cqm = (IS_INTRA( mb_type ) ? 0:3)+p;
630 /* For CAVLC 4:4:4, we need to keep track of the luma 8x8 CBP for deblocking nnz purposes. */
631 2700458 int new_cbp = 0;
632
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 13502290 for(i8x8=0; i8x8<4; i8x8++){
633
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✓ Branch 1 taken 2971465 times.
 10801832 if(cbp & (1<<i8x8)){
634
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✓ Branch 1 taken 5509744 times.
 7830367 if(IS_8x8DCT(mb_type)){
635 2320623 int16_t *buf = &sl->mb[64*i8x8+256*p << pixel_shift];
636 uint8_t *nnz;
637
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 11603115 for(i4x4=0; i4x4<4; i4x4++){
638 9282492 const int index= i4x4 + 4*i8x8 + p*16;
639
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✓ Branch 1 taken 9282492 times.
 9282492 if( decode_residual(h, sl, gb, buf, index, scan8x8+16*i4x4,
640 9282492 h->ps.pps->dequant8_coeff[cqm][qscale], 16) < 0 )
641 ✗ return -1;
642 }
643 2320623 nnz = &sl->non_zero_count_cache[scan8[4 * i8x8 + p * 16]];
644 2320623 nnz[0] += nnz[1] + nnz[8] + nnz[9];
645 2320623 new_cbp |= !!nnz[0] << i8x8;
646 }else{
647
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 27548720 for(i4x4=0; i4x4<4; i4x4++){
648 22038976 const int index= i4x4 + 4*i8x8 + p*16;
649
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✓ Branch 1 taken 22038976 times.
 22038976 if( decode_residual(h, sl, gb, sl->mb + (16*index << pixel_shift), index,
650 22038976 scan, h->ps.pps->dequant4_coeff[cqm][qscale], 16) < 0 ){
651 ✗ return -1;
652 }
653 22038976 new_cbp |= sl->non_zero_count_cache[scan8[index]] << i8x8;
654 }
655 }
656 }else{
657 2971465 uint8_t * const nnz = &sl->non_zero_count_cache[scan8[4 * i8x8 + p * 16]];
658 2971465 nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0;
659 }
660 }
661 2700458 return new_cbp;
662 }
663 }
664
665 4846870 int ff_h264_decode_mb_cavlc(const H264Context *h, H264SliceContext *sl)
666 {
667 int mb_xy;
668 int partition_count;
669 unsigned int mb_type, cbp;
670 4846870 int dct8x8_allowed = h->ps.pps->transform_8x8_mode;
671
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 4846870 const int decode_chroma = h->ps.sps->chroma_format_idc == 1 || h->ps.sps->chroma_format_idc == 2;
672 4846870 const int pixel_shift = h->pixel_shift;
673
674 4846870 mb_xy = sl->mb_xy = sl->mb_x + sl->mb_y*h->mb_stride;
675
676 ff_tlog(h->avctx, "pic:%d mb:%d/%d\n", h->poc.frame_num, sl->mb_x, sl->mb_y);
677 4846870 cbp = 0; /* avoid warning. FIXME: find a solution without slowing
678 down the code */
679
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 4846870 if (sl->slice_type_nos != AV_PICTURE_TYPE_I) {
680
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 3761013 if (sl->mb_skip_run == -1) {
681 2637750 unsigned mb_skip_run = get_ue_golomb_long(&sl->gb);
682
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✓ Branch 1 taken 2637750 times.
 2637750 if (mb_skip_run > h->mb_num) {
683 ✗ av_log(h->avctx, AV_LOG_ERROR, "mb_skip_run %d is invalid\n", mb_skip_run);
684 ✗ return AVERROR_INVALIDDATA;
685 }
686 2637750 sl->mb_skip_run = mb_skip_run;
687 }
688
689
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 3761013 if (sl->mb_skip_run--) {
690
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✓ Branch 2 taken 5515 times.
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 1126862 if (FRAME_MBAFF(h) && (sl->mb_y & 1) == 0) {
691
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✓ Branch 1 taken 2621 times.
 5515 if (sl->mb_skip_run == 0)
692 2894 sl->mb_mbaff = sl->mb_field_decoding_flag = get_bits1(&sl->gb);
693 }
694 1126862 decode_mb_skip(h, sl);
695 1126862 return 0;
696 }
697 }
698
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 3720008 if (FRAME_MBAFF(h)) {
699
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✓ Branch 1 taken 248878 times.
 497835 if ((sl->mb_y & 1) == 0)
700 248957 sl->mb_mbaff = sl->mb_field_decoding_flag = get_bits1(&sl->gb);
701 }
702
703 3720008 sl->prev_mb_skipped = 0;
704
705 3720008 mb_type= get_ue_golomb(&sl->gb);
706
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✓ Branch 1 taken 2818873 times.
 3720008 if (sl->slice_type_nos == AV_PICTURE_TYPE_B) {
707
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✓ Branch 1 taken 141037 times.
 901135 if(mb_type < 23){
708 760098 partition_count = ff_h264_b_mb_type_info[mb_type].partition_count;
709 760098 mb_type = ff_h264_b_mb_type_info[mb_type].type;
710 }else{
711 141037 mb_type -= 23;
712 141037 goto decode_intra_mb;
713 }
714
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 2818873 } else if (sl->slice_type_nos == AV_PICTURE_TYPE_P) {
715
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✓ Branch 1 taken 265851 times.
 1733016 if(mb_type < 5){
716 1467165 partition_count = ff_h264_p_mb_type_info[mb_type].partition_count;
717 1467165 mb_type = ff_h264_p_mb_type_info[mb_type].type;
718 }else{
719 265851 mb_type -= 5;
720 265851 goto decode_intra_mb;
721 }
722 }else{
723 av_assert2(sl->slice_type_nos == AV_PICTURE_TYPE_I);
724
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✗ Branch 1 not taken.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 1085857 if (sl->slice_type == AV_PICTURE_TYPE_SI && mb_type)
725 ✗ mb_type--;
726 1085857 decode_intra_mb:
727
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✓ Branch 1 taken 1492745 times.
 1492745 if(mb_type > 25){
728 ✗ av_log(h->avctx, AV_LOG_ERROR, "mb_type %d in %c slice too large at %d %d\n", mb_type, av_get_picture_type_char(sl->slice_type), sl->mb_x, sl->mb_y);
729 ✗ return -1;
730 }
731 1492745 partition_count=0;
732 1492745 cbp = ff_h264_i_mb_type_info[mb_type].cbp;
733 1492745 sl->intra16x16_pred_mode = ff_h264_i_mb_type_info[mb_type].pred_mode;
734 1492745 mb_type = ff_h264_i_mb_type_info[mb_type].type;
735 }
736
737
2/2
✓ Branch 0 taken 981328 times.
✓ Branch 1 taken 2738680 times.
 3720008 if (MB_FIELD(sl))
738 981328 mb_type |= MB_TYPE_INTERLACED;
739
740 3720008 h->slice_table[mb_xy] = sl->slice_num;
741
742
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✓ Branch 1 taken 3702562 times.
 3720008 if(IS_INTRA_PCM(mb_type)){
743 17446 const int mb_size = ff_h264_mb_sizes[h->ps.sps->chroma_format_idc] *
744 17446 h->ps.sps->bit_depth_luma;
745
746 // We assume these blocks are very rare so we do not optimize it.
747 17446 sl->intra_pcm_ptr = align_get_bits(&sl->gb);
748
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 17446 if (get_bits_left(&sl->gb) < mb_size) {
749 ✗ av_log(h->avctx, AV_LOG_ERROR, "Not enough data for an intra PCM block.\n");
750 ✗ return AVERROR_INVALIDDATA;
751 }
752 17446 skip_bits_long(&sl->gb, mb_size);
753
754 // In deblocking, the quantizer is 0
755 17446 h->cur_pic.qscale_table[mb_xy] = 0;
756 // All coeffs are present
757 17446 memset(h->non_zero_count[mb_xy], 16, 48);
758
759 17446 h->cur_pic.mb_type[mb_xy] = mb_type;
760 17446 return 0;
761 }
762
763 3702562 fill_decode_neighbors(h, sl, mb_type);
764 3702562 fill_decode_caches(h, sl, mb_type);
765
766 //mb_pred
767
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 3702562 if(IS_INTRA(mb_type)){
768 int pred_mode;
769 // init_top_left_availability(h);
770
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✓ Branch 0 taken 1177726 times.
✓ Branch 1 taken 297573 times.
 1475299 if(IS_INTRA4x4(mb_type)){
771 int i;
772 1177726 int di = 1;
773
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✓ Branch 1 taken 322813 times.
✓ Branch 3 taken 541711 times.
✓ Branch 4 taken 313202 times.
 1177726 if(dct8x8_allowed && get_bits1(&sl->gb)){
774 541711 mb_type |= MB_TYPE_8x8DCT;
775 541711 di = 4;
776 }
777
778 // fill_intra4x4_pred_table(h);
779
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✓ Branch 0 taken 12343084 times.
✓ Branch 1 taken 1177726 times.
 13520810 for(i=0; i<16; i+=di){
780 12343084 int mode = pred_intra_mode(h, sl, i);
781
782
2/2
✓ Branch 1 taken 6614479 times.
✓ Branch 2 taken 5728605 times.
 12343084 if(!get_bits1(&sl->gb)){
783 6614479 const int rem_mode= get_bits(&sl->gb, 3);
784 6614479 mode = rem_mode + (rem_mode >= mode);
785 }
786
787
2/2
✓ Branch 0 taken 2166844 times.
✓ Branch 1 taken 10176240 times.
 12343084 if(di==4)
788 2166844 fill_rectangle(&sl->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1);
789 else
790 10176240 sl->intra4x4_pred_mode_cache[scan8[i]] = mode;
791 }
792 1177726 write_back_intra_pred_mode(h, sl);
793
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✓ Branch 1 taken 1177726 times.
 1177726 if (ff_h264_check_intra4x4_pred_mode(sl->intra4x4_pred_mode_cache, h->avctx,
794 1177726 sl->top_samples_available, sl->left_samples_available) < 0)
795 ✗ return -1;
796 }else{
797 595146 sl->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available,
798 297573 sl->left_samples_available, sl->intra16x16_pred_mode, 0);
799
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✓ Branch 1 taken 297573 times.
 297573 if (sl->intra16x16_pred_mode < 0)
800 ✗ return -1;
801 }
802
2/2
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✓ Branch 1 taken 27129 times.
 1475299 if(decode_chroma){
803 1448170 pred_mode= ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available,
804 1448170 sl->left_samples_available, get_ue_golomb_31(&sl->gb), 1);
805
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✓ Branch 1 taken 1448170 times.
 1448170 if(pred_mode < 0)
806 ✗ return -1;
807 1448170 sl->chroma_pred_mode = pred_mode;
808 } else {
809 27129 sl->chroma_pred_mode = DC_128_PRED8x8;
810 }
811
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 2227263 }else if(partition_count==4){
812 int i, j, sub_partition_count[4], list, ref[2][4];
813
814
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✓ Branch 1 taken 339146 times.
 517693 if (sl->slice_type_nos == AV_PICTURE_TYPE_B) {
815
2/2
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✓ Branch 1 taken 178547 times.
 892735 for(i=0; i<4; i++){
816 714188 sl->sub_mb_type[i]= get_ue_golomb_31(&sl->gb);
817
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 714188 times.
 714188 if(sl->sub_mb_type[i] >=13){
818 ✗ av_log(h->avctx, AV_LOG_ERROR, "B sub_mb_type %u out of range at %d %d\n", sl->sub_mb_type[i], sl->mb_x, sl->mb_y);
819 ✗ return -1;
820 }
821 714188 sub_partition_count[i] = ff_h264_b_sub_mb_type_info[sl->sub_mb_type[i]].partition_count;
822 714188 sl->sub_mb_type[i] = ff_h264_b_sub_mb_type_info[sl->sub_mb_type[i]].type;
823 }
824
2/2
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✓ Branch 1 taken 122450 times.
 178547 if( IS_DIRECT(sl->sub_mb_type[0]|sl->sub_mb_type[1]|sl->sub_mb_type[2]|sl->sub_mb_type[3])) {
825 56097 ff_h264_pred_direct_motion(h, sl, &mb_type);
826 56097 sl->ref_cache[0][scan8[4]] =
827 56097 sl->ref_cache[1][scan8[4]] =
828 56097 sl->ref_cache[0][scan8[12]] =
829 56097 sl->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE;
830 }
831 }else{
832 av_assert2(sl->slice_type_nos == AV_PICTURE_TYPE_P); //FIXME SP correct ?
833
2/2
✓ Branch 0 taken 1356584 times.
✓ Branch 1 taken 339146 times.
 1695730 for(i=0; i<4; i++){
834 1356584 sl->sub_mb_type[i]= get_ue_golomb_31(&sl->gb);
835
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1356584 times.
 1356584 if(sl->sub_mb_type[i] >=4){
836 ✗ av_log(h->avctx, AV_LOG_ERROR, "P sub_mb_type %u out of range at %d %d\n", sl->sub_mb_type[i], sl->mb_x, sl->mb_y);
837 ✗ return -1;
838 }
839 1356584 sub_partition_count[i] = ff_h264_p_sub_mb_type_info[sl->sub_mb_type[i]].partition_count;
840 1356584 sl->sub_mb_type[i] = ff_h264_p_sub_mb_type_info[sl->sub_mb_type[i]].type;
841 }
842 }
843
844
2/2
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✓ Branch 1 taken 517693 times.
 1213933 for (list = 0; list < sl->list_count; list++) {
845
2/2
✓ Branch 0 taken 572388 times.
✓ Branch 1 taken 123852 times.
 696240 int ref_count = IS_REF0(mb_type) ? 1 : sl->ref_count[list] << MB_MBAFF(sl);
846
2/2
✓ Branch 0 taken 2784960 times.
✓ Branch 1 taken 696240 times.
 3481200 for(i=0; i<4; i++){
847
2/2
✓ Branch 0 taken 232378 times.
✓ Branch 1 taken 2552582 times.
 2784960 if(IS_DIRECT(sl->sub_mb_type[i])) continue;
848
2/2
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✓ Branch 1 taken 328000 times.
 2552582 if(IS_DIR(sl->sub_mb_type[i], 0, list)){
849 unsigned int tmp;
850
2/2
✓ Branch 0 taken 780389 times.
✓ Branch 1 taken 1444193 times.
 2224582 if(ref_count == 1){
851 780389 tmp= 0;
852
2/2
✓ Branch 0 taken 454436 times.
✓ Branch 1 taken 989757 times.
 1444193 }else if(ref_count == 2){
853 454436 tmp= get_bits1(&sl->gb)^1;
854 }else{
855 989757 tmp= get_ue_golomb_31(&sl->gb);
856
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 989757 times.
 989757 if(tmp>=ref_count){
857 ✗ av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", tmp);
858 ✗ return -1;
859 }
860 }
861 2224582 ref[list][i]= tmp;
862 }else{
863 //FIXME
864 328000 ref[list][i] = -1;
865 }
866 }
867 }
868
869
2/2
✓ Branch 0 taken 51527 times.
✓ Branch 1 taken 466166 times.
 517693 if(dct8x8_allowed)
870 51527 dct8x8_allowed = get_dct8x8_allowed(h, sl);
871
872
2/2
✓ Branch 0 taken 696240 times.
✓ Branch 1 taken 517693 times.
 1213933 for (list = 0; list < sl->list_count; list++) {
873
2/2
✓ Branch 0 taken 2784960 times.
✓ Branch 1 taken 696240 times.
 3481200 for(i=0; i<4; i++){
874
2/2
✓ Branch 0 taken 232378 times.
✓ Branch 1 taken 2552582 times.
 2784960 if(IS_DIRECT(sl->sub_mb_type[i])) {
875 232378 sl->ref_cache[list][ scan8[4*i] ] = sl->ref_cache[list][ scan8[4*i]+1 ];
876 232378 continue;
877 }
878 2552582 sl->ref_cache[list][ scan8[4*i] ]=sl->ref_cache[list][ scan8[4*i]+1 ]=
879 2552582 sl->ref_cache[list][ scan8[4*i]+8 ]=sl->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i];
880
881
2/2
✓ Branch 0 taken 2224582 times.
✓ Branch 1 taken 328000 times.
 2552582 if(IS_DIR(sl->sub_mb_type[i], 0, list)){
882 2224582 const int sub_mb_type= sl->sub_mb_type[i];
883
2/2
✓ Branch 0 taken 1678039 times.
✓ Branch 1 taken 546543 times.
 2224582 const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1;
884
2/2
✓ Branch 0 taken 3687770 times.
✓ Branch 1 taken 2224582 times.
 5912352 for(j=0; j<sub_partition_count[i]; j++){
885 int mx, my;
886 3687770 const int index= 4*i + block_width*j;
887 3687770 int16_t (* mv_cache)[2]= &sl->mv_cache[list][ scan8[index] ];
888 3687770 pred_motion(h, sl, index, block_width, list, sl->ref_cache[list][ scan8[index] ], &mx, &my);
889 3687770 mx += (unsigned)get_se_golomb(&sl->gb);
890 3687770 my += (unsigned)get_se_golomb(&sl->gb);
891 ff_tlog(h->avctx, "final mv:%d %d\n", mx, my);
892
893
2/2
✓ Branch 0 taken 1165880 times.
✓ Branch 1 taken 2521890 times.
 3687770 if(IS_SUB_8X8(sub_mb_type)){
894 1165880 mv_cache[ 1 ][0]=
895 1165880 mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx;
896 1165880 mv_cache[ 1 ][1]=
897 1165880 mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my;
898
2/2
✓ Branch 0 taken 1024318 times.
✓ Branch 1 taken 1497572 times.
 2521890 }else if(IS_SUB_8X4(sub_mb_type)){
899 1024318 mv_cache[ 1 ][0]= mx;
900 1024318 mv_cache[ 1 ][1]= my;
901
2/2
✓ Branch 0 taken 688600 times.
✓ Branch 1 taken 808972 times.
 1497572 }else if(IS_SUB_4X8(sub_mb_type)){
902 688600 mv_cache[ 8 ][0]= mx;
903 688600 mv_cache[ 8 ][1]= my;
904 }
905 3687770 mv_cache[ 0 ][0]= mx;
906 3687770 mv_cache[ 0 ][1]= my;
907 }
908 }else{
909 328000 uint32_t *p= (uint32_t *)&sl->mv_cache[list][ scan8[4*i] ][0];
910 328000 p[0] = p[1]=
911 328000 p[8] = p[9]= 0;
912 }
913 }
914 }
915
2/2
✓ Branch 0 taken 139126 times.
✓ Branch 1 taken 1570444 times.
 1709570 }else if(IS_DIRECT(mb_type)){
916 139126 ff_h264_pred_direct_motion(h, sl, &mb_type);
917 139126 dct8x8_allowed &= h->ps.sps->direct_8x8_inference_flag;
918 }else{
919 int list, mx, my, i;
920 //FIXME we should set ref_idx_l? to 0 if we use that later ...
921
2/2
✓ Branch 0 taken 1070225 times.
✓ Branch 1 taken 500219 times.
 1570444 if(IS_16X16(mb_type)){
922
2/2
✓ Branch 0 taken 1334114 times.
✓ Branch 1 taken 1070225 times.
 2404339 for (list = 0; list < sl->list_count; list++) {
923 unsigned int val;
924
2/2
✓ Branch 0 taken 1126779 times.
✓ Branch 1 taken 207335 times.
 1334114 if(IS_DIR(mb_type, 0, list)){
925 1126779 unsigned rc = sl->ref_count[list] << MB_MBAFF(sl);
926
2/2
✓ Branch 0 taken 627328 times.
✓ Branch 1 taken 499451 times.
 1126779 if (rc == 1) {
927 627328 val= 0;
928
2/2
✓ Branch 0 taken 135504 times.
✓ Branch 1 taken 363947 times.
 499451 } else if (rc == 2) {
929 135504 val= get_bits1(&sl->gb)^1;
930 }else{
931 363947 val= get_ue_golomb_31(&sl->gb);
932
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 363947 times.
 363947 if (val >= rc) {
933 ✗ av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
934 ✗ return -1;
935 }
936 }
937 1126779 fill_rectangle(&sl->ref_cache[list][ scan8[0] ], 4, 4, 8, val, 1);
938 }
939 }
940
2/2
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✓ Branch 1 taken 1070225 times.
 2404339 for (list = 0; list < sl->list_count; list++) {
941
2/2
✓ Branch 0 taken 1126779 times.
✓ Branch 1 taken 207335 times.
 1334114 if(IS_DIR(mb_type, 0, list)){
942 1126779 pred_motion(h, sl, 0, 4, list, sl->ref_cache[list][ scan8[0] ], &mx, &my);
943 1126779 mx += (unsigned)get_se_golomb(&sl->gb);
944 1126779 my += (unsigned)get_se_golomb(&sl->gb);
945 ff_tlog(h->avctx, "final mv:%d %d\n", mx, my);
946
947 1126779 fill_rectangle(sl->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4);
948 }
949 }
950 }
951
2/2
✓ Branch 0 taken 264997 times.
✓ Branch 1 taken 235222 times.
 500219 else if(IS_16X8(mb_type)){
952
2/2
✓ Branch 0 taken 363542 times.
✓ Branch 1 taken 264997 times.
 628539 for (list = 0; list < sl->list_count; list++) {
953
2/2
✓ Branch 0 taken 727084 times.
✓ Branch 1 taken 363542 times.
 1090626 for(i=0; i<2; i++){
954 unsigned int val;
955
2/2
✓ Branch 0 taken 572878 times.
✓ Branch 1 taken 154206 times.
 727084 if(IS_DIR(mb_type, i, list)){
956 572878 unsigned rc = sl->ref_count[list] << MB_MBAFF(sl);
957
2/2
✓ Branch 0 taken 230171 times.
✓ Branch 1 taken 342707 times.
 572878 if (rc == 1) {
958 230171 val= 0;
959
2/2
✓ Branch 0 taken 80255 times.
✓ Branch 1 taken 262452 times.
 342707 } else if (rc == 2) {
960 80255 val= get_bits1(&sl->gb)^1;
961 }else{
962 262452 val= get_ue_golomb_31(&sl->gb);
963
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 262452 times.
 262452 if (val >= rc) {
964 ✗ av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
965 ✗ return -1;
966 }
967 }
968 }else
969 154206 val= LIST_NOT_USED&0xFF;
970 727084 fill_rectangle(&sl->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 1);
971 }
972 }
973
2/2
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✓ Branch 1 taken 264997 times.
 628539 for (list = 0; list < sl->list_count; list++) {
974
2/2
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✓ Branch 1 taken 363542 times.
 1090626 for(i=0; i<2; i++){
975 unsigned int val;
976
2/2
✓ Branch 0 taken 572878 times.
✓ Branch 1 taken 154206 times.
 727084 if(IS_DIR(mb_type, i, list)){
977 572878 pred_16x8_motion(h, sl, 8*i, list, sl->ref_cache[list][scan8[0] + 16*i], &mx, &my);
978 572878 mx += (unsigned)get_se_golomb(&sl->gb);
979 572878 my += (unsigned)get_se_golomb(&sl->gb);
980 ff_tlog(h->avctx, "final mv:%d %d\n", mx, my);
981
982 572878 val= pack16to32(mx,my);
983 }else
984 154206 val=0;
985 727084 fill_rectangle(sl->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 4);
986 }
987 }
988 }else{
989 av_assert2(IS_8X16(mb_type));
990
2/2
✓ Branch 0 taken 315213 times.
✓ Branch 1 taken 235222 times.
 550435 for (list = 0; list < sl->list_count; list++) {
991
2/2
✓ Branch 0 taken 630426 times.
✓ Branch 1 taken 315213 times.
 945639 for(i=0; i<2; i++){
992 unsigned int val;
993
2/2
✓ Branch 0 taken 503708 times.
✓ Branch 1 taken 126718 times.
 630426 if(IS_DIR(mb_type, i, list)){ //FIXME optimize
994 503708 unsigned rc = sl->ref_count[list] << MB_MBAFF(sl);
995
2/2
✓ Branch 0 taken 202563 times.
✓ Branch 1 taken 301145 times.
 503708 if (rc == 1) {
996 202563 val= 0;
997
2/2
✓ Branch 0 taken 82740 times.
✓ Branch 1 taken 218405 times.
 301145 } else if (rc == 2) {
998 82740 val= get_bits1(&sl->gb)^1;
999 }else{
1000 218405 val= get_ue_golomb_31(&sl->gb);
1001
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 218405 times.
 218405 if (val >= rc) {
1002 ✗ av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
1003 ✗ return -1;
1004 }
1005 }
1006 }else
1007 126718 val= LIST_NOT_USED&0xFF;
1008 630426 fill_rectangle(&sl->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 1);
1009 }
1010 }
1011
2/2
✓ Branch 0 taken 315213 times.
✓ Branch 1 taken 235222 times.
 550435 for (list = 0; list < sl->list_count; list++) {
1012
2/2
✓ Branch 0 taken 630426 times.
✓ Branch 1 taken 315213 times.
 945639 for(i=0; i<2; i++){
1013 unsigned int val;
1014
2/2
✓ Branch 0 taken 503708 times.
✓ Branch 1 taken 126718 times.
 630426 if(IS_DIR(mb_type, i, list)){
1015 503708 pred_8x16_motion(h, sl, i*4, list, sl->ref_cache[list][ scan8[0] + 2*i ], &mx, &my);
1016 503708 mx += (unsigned)get_se_golomb(&sl->gb);
1017 503708 my += (unsigned)get_se_golomb(&sl->gb);
1018 ff_tlog(h->avctx, "final mv:%d %d\n", mx, my);
1019
1020 503708 val= pack16to32(mx,my);
1021 }else
1022 126718 val=0;
1023 630426 fill_rectangle(sl->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 4);
1024 }
1025 }
1026 }
1027 }
1028
1029
2/2
✓ Branch 0 taken 2227263 times.
✓ Branch 1 taken 1475299 times.
 3702562 if(IS_INTER(mb_type))
1030 2227263 write_back_motion(h, sl, mb_type);
1031
1032
2/2
✓ Branch 0 taken 3404989 times.
✓ Branch 1 taken 297573 times.
 3702562 if(!IS_INTRA16x16(mb_type)){
1033 3404989 cbp= get_ue_golomb(&sl->gb);
1034
1035
2/2
✓ Branch 0 taken 3365639 times.
✓ Branch 1 taken 39350 times.
 3404989 if(decode_chroma){
1036
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3365639 times.
 3365639 if(cbp > 47){
1037 ✗ av_log(h->avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, sl->mb_x, sl->mb_y);
1038 ✗ return -1;
1039 }
1040
2/2
✓ Branch 0 taken 1153577 times.
✓ Branch 1 taken 2212062 times.
 3365639 if (IS_INTRA4x4(mb_type))
1041 1153577 cbp = ff_h264_golomb_to_intra4x4_cbp[cbp];
1042 else
1043 2212062 cbp = ff_h264_golomb_to_inter_cbp[cbp];
1044 }else{
1045
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 39350 times.
 39350 if(cbp > 15){
1046 ✗ av_log(h->avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, sl->mb_x, sl->mb_y);
1047 ✗ return -1;
1048 }
1049
2/2
✓ Branch 0 taken 24149 times.
✓ Branch 1 taken 15201 times.
 39350 if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp_gray[cbp];
1050 15201 else cbp= golomb_to_inter_cbp_gray[cbp];
1051 }
1052 } else {
1053
3/4
✓ Branch 0 taken 2980 times.
✓ Branch 1 taken 294593 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 2980 times.
 297573 if (!decode_chroma && cbp>15) {
1054 ✗ av_log(h->avctx, AV_LOG_ERROR, "gray chroma\n");
1055 ✗ return AVERROR_INVALIDDATA;
1056 }
1057 }
1058
1059
6/6
✓ Branch 0 taken 1349162 times.
✓ Branch 1 taken 2353400 times.
✓ Branch 2 taken 1154939 times.
✓ Branch 3 taken 194223 times.
✓ Branch 4 taken 275548 times.
✓ Branch 5 taken 879391 times.
 3702562 if(dct8x8_allowed && (cbp&15) && !IS_INTRA(mb_type)){
1060 275548 mb_type |= MB_TYPE_8x8DCT*get_bits1(&sl->gb);
1061 }
1062 3702562 sl->cbp=
1063 3702562 h->cbp_table[mb_xy]= cbp;
1064 3702562 h->cur_pic.mb_type[mb_xy] = mb_type;
1065
1066
4/4
✓ Branch 0 taken 875410 times.
✓ Branch 1 taken 2827152 times.
✓ Branch 2 taken 170879 times.
✓ Branch 3 taken 704531 times.
 6700593 if(cbp || IS_INTRA16x16(mb_type)){
1067 int i4x4, i8x8, chroma_idx;
1068 int dquant;
1069 int ret;
1070 2998031 GetBitContext *gb = &sl->gb;
1071 const uint8_t *scan, *scan8x8;
1072 2998031 const int max_qp = 51 + 6 * (h->ps.sps->bit_depth_luma - 8);
1073
1074 2998031 dquant= get_se_golomb(&sl->gb);
1075
1076 2998031 sl->qscale += (unsigned)dquant;
1077
1078
2/2
✓ Branch 0 taken 8070 times.
✓ Branch 1 taken 2989961 times.
 2998031 if (((unsigned)sl->qscale) > max_qp){
1079
2/2
✓ Branch 0 taken 3860 times.
✓ Branch 1 taken 4210 times.
 8070 if (sl->qscale < 0) sl->qscale += max_qp + 1;
1080 4210 else sl->qscale -= max_qp+1;
1081
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 8070 times.
 8070 if (((unsigned)sl->qscale) > max_qp){
1082 ✗ av_log(h->avctx, AV_LOG_ERROR, "dquant out of range (%d) at %d %d\n", dquant, sl->mb_x, sl->mb_y);
1083 ✗ sl->qscale = max_qp;
1084 ✗ return -1;
1085 }
1086 }
1087
1088 2998031 sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, sl->qscale);
1089 2998031 sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, sl->qscale);
1090
1091
2/2
✓ Branch 0 taken 824163 times.
✓ Branch 1 taken 2173868 times.
 2998031 if(IS_INTERLACED(mb_type)){
1092
2/2
✓ Branch 0 taken 824002 times.
✓ Branch 1 taken 161 times.
 824163 scan8x8 = sl->qscale ? h->field_scan8x8_cavlc : h->field_scan8x8_cavlc_q0;
1093
2/2
✓ Branch 0 taken 824002 times.
✓ Branch 1 taken 161 times.
 824163 scan = sl->qscale ? h->field_scan : h->field_scan_q0;
1094 }else{
1095
2/2
✓ Branch 0 taken 2172979 times.
✓ Branch 1 taken 889 times.
 2173868 scan8x8 = sl->qscale ? h->zigzag_scan8x8_cavlc : h->zigzag_scan8x8_cavlc_q0;
1096
2/2
✓ Branch 0 taken 2172979 times.
✓ Branch 1 taken 889 times.
 2173868 scan = sl->qscale ? h->zigzag_scan : h->zigzag_scan_q0;
1097 }
1098
1099
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 2998031 times.
 2998031 if ((ret = decode_luma_residual(h, sl, gb, scan, scan8x8, pixel_shift, mb_type, cbp, 0)) < 0 ) {
1100 ✗ return -1;
1101 }
1102 2998031 h->cbp_table[mb_xy] |= ret << 12;
1103
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2998031 times.
 2998031 if (CHROMA444(h)) {
1104 ✗ if (decode_luma_residual(h, sl, gb, scan, scan8x8, pixel_shift, mb_type, cbp, 1) < 0 ) {
1105 ✗ return -1;
1106 }
1107 ✗ if (decode_luma_residual(h, sl, gb, scan, scan8x8, pixel_shift, mb_type, cbp, 2) < 0 ) {
1108 ✗ return -1;
1109 }
1110 } else {
1111 2998031 const int num_c8x8 = h->ps.sps->chroma_format_idc;
1112
1113
2/2
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✓ Branch 1 taken 1352714 times.
 2998031 if(cbp&0x30){
1114
2/2
✓ Branch 0 taken 3290634 times.
✓ Branch 1 taken 1645317 times.
 4935951 for(chroma_idx=0; chroma_idx<2; chroma_idx++)
1115
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 3290634 times.
 3290634 if (decode_residual(h, sl, gb, sl->mb + ((256 + 16*16*chroma_idx) << pixel_shift),
1116 CHROMA_DC_BLOCK_INDEX + chroma_idx,
1117
2/2
✓ Branch 0 taken 579058 times.
✓ Branch 1 taken 2711576 times.
 3290634 CHROMA422(h) ? ff_h264_chroma422_dc_scan : ff_h264_chroma_dc_scan,
1118 NULL, 4 * num_c8x8) < 0) {
1119 ✗ return -1;
1120 }
1121 }
1122
1123
2/2
✓ Branch 0 taken 1027672 times.
✓ Branch 1 taken 1970359 times.
 2998031 if(cbp&0x20){
1124
2/2
✓ Branch 0 taken 2055344 times.
✓ Branch 1 taken 1027672 times.
 3083016 for(chroma_idx=0; chroma_idx<2; chroma_idx++){
1125
2/2
✓ Branch 0 taken 1191916 times.
✓ Branch 1 taken 863428 times.
 2055344 const uint32_t *qmul = h->ps.pps->dequant4_coeff[chroma_idx+1+(IS_INTRA( mb_type ) ? 0:3)][sl->chroma_qp[chroma_idx]];
1126 2055344 int16_t *mb = sl->mb + (16*(16 + 16*chroma_idx) << pixel_shift);
1127
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 4497832 for (i8x8 = 0; i8x8<num_c8x8; i8x8++) {
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 12212440 for (i4x4 = 0; i4x4 < 4; i4x4++) {
1129 9769952 const int index = 16 + 16*chroma_idx + 8*i8x8 + i4x4;
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 9769952 if (decode_residual(h, sl, gb, mb, index, scan + 1, qmul, 15) < 0)
1131 ✗ return -1;
1132 9769952 mb += 16 << pixel_shift;
1133 }
1134 }
1135 }
1136 }else{
1137 1970359 fill_rectangle(&sl->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1);
1138 1970359 fill_rectangle(&sl->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1);
1139 }
1140 }
1141 }else{
1142 704531 fill_rectangle(&sl->non_zero_count_cache[scan8[ 0]], 4, 4, 8, 0, 1);
1143 704531 fill_rectangle(&sl->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1);
1144 704531 fill_rectangle(&sl->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1);
1145 }
1146 3702562 h->cur_pic.qscale_table[mb_xy] = sl->qscale;
1147 3702562 write_back_non_zero_count(h, sl);
1148
1149 3702562 return 0;
1150 }
1151