GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/cbs_av1_syntax_template.c Lines: 835 1138 73.4 %
Date: 2021-04-20 15:25:36 Branches: 707 1584 44.6 %

Line Branch Exec Source
1
/*
2
 * This file is part of FFmpeg.
3
 *
4
 * FFmpeg is free software; you can redistribute it and/or
5
 * modify it under the terms of the GNU Lesser General Public
6
 * License as published by the Free Software Foundation; either
7
 * version 2.1 of the License, or (at your option) any later version.
8
 *
9
 * FFmpeg is distributed in the hope that it will be useful,
10
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12
 * Lesser General Public License for more details.
13
 *
14
 * You should have received a copy of the GNU Lesser General Public
15
 * License along with FFmpeg; if not, write to the Free Software
16
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
 */
18
19
14150
static int FUNC(obu_header)(CodedBitstreamContext *ctx, RWContext *rw,
20
                            AV1RawOBUHeader *current)
21
{
22
14150
    CodedBitstreamAV1Context *priv = ctx->priv_data;
23
    int err;
24
25
14150
    HEADER("OBU header");
26
27
14150
    fc(1, obu_forbidden_bit, 0, 0);
28
29
14150
    fc(4, obu_type, 0, AV1_OBU_PADDING);
30
14150
    flag(obu_extension_flag);
31
14150
    flag(obu_has_size_field);
32
33
14150
    fc(1, obu_reserved_1bit, 0, 0);
34
35
14150
    if (current->obu_extension_flag) {
36
1120
        fb(3, temporal_id);
37
1120
        fb(2, spatial_id);
38
1120
        fc(3, extension_header_reserved_3bits, 0, 0);
39
    } else {
40
13030
        infer(temporal_id, 0);
41
13030
        infer(spatial_id, 0);
42
    }
43
44
14150
    priv->temporal_id = current->temporal_id;
45
14150
    priv->spatial_id  = current->spatial_id;
46
47
14150
    return 0;
48
}
49
50
1876
static int FUNC(trailing_bits)(CodedBitstreamContext *ctx, RWContext *rw, int nb_bits)
51
{
52
    int err;
53
54
1876
    av_assert0(nb_bits > 0);
55
56
1876
    fixed(1, trailing_one_bit, 1);
57
1876
    --nb_bits;
58
59
10124
    while (nb_bits > 0) {
60
8248
        fixed(1, trailing_zero_bit, 0);
61
8248
        --nb_bits;
62
    }
63
64
1876
    return 0;
65
}
66
67
6212
static int FUNC(byte_alignment)(CodedBitstreamContext *ctx, RWContext *rw)
68
{
69
    int err;
70
71
21266
    while (byte_alignment(rw) != 0)
72
15054
        fixed(1, zero_bit, 0);
73
74
6212
    return 0;
75
}
76
77
1100
static int FUNC(color_config)(CodedBitstreamContext *ctx, RWContext *rw,
78
                              AV1RawColorConfig *current, int seq_profile)
79
{
80
1100
    CodedBitstreamAV1Context *priv = ctx->priv_data;
81
    int err;
82
83
1100
    flag(high_bitdepth);
84
85
1100
    if (seq_profile == FF_PROFILE_AV1_PROFESSIONAL &&
86
        current->high_bitdepth) {
87
        flag(twelve_bit);
88
        priv->bit_depth = current->twelve_bit ? 12 : 10;
89
    } else {
90
1100
        priv->bit_depth = current->high_bitdepth ? 10 : 8;
91
    }
92
93
1100
    if (seq_profile == FF_PROFILE_AV1_HIGH)
94
        infer(mono_chrome, 0);
95
    else
96
1100
        flag(mono_chrome);
97
1100
    priv->num_planes = current->mono_chrome ? 1 : 3;
98
99
1100
    flag(color_description_present_flag);
100
1100
    if (current->color_description_present_flag) {
101
        fb(8, color_primaries);
102
        fb(8, transfer_characteristics);
103
        fb(8, matrix_coefficients);
104
    } else {
105
1100
        infer(color_primaries,          AVCOL_PRI_UNSPECIFIED);
106
1100
        infer(transfer_characteristics, AVCOL_TRC_UNSPECIFIED);
107
1100
        infer(matrix_coefficients,      AVCOL_SPC_UNSPECIFIED);
108
    }
109
110
1100
    if (current->mono_chrome) {
111
        flag(color_range);
112
113
        infer(subsampling_x, 1);
114
        infer(subsampling_y, 1);
115
        infer(chroma_sample_position, AV1_CSP_UNKNOWN);
116
        infer(separate_uv_delta_q, 0);
117
118
1100
    } else if (current->color_primaries          == AVCOL_PRI_BT709 &&
119
               current->transfer_characteristics == AVCOL_TRC_IEC61966_2_1 &&
120
               current->matrix_coefficients      == AVCOL_SPC_RGB) {
121
        infer(color_range,   1);
122
        infer(subsampling_x, 0);
123
        infer(subsampling_y, 0);
124
        flag(separate_uv_delta_q);
125
126
    } else {
127
1100
        flag(color_range);
128
129
1100
        if (seq_profile == FF_PROFILE_AV1_MAIN) {
130
1100
            infer(subsampling_x, 1);
131
1100
            infer(subsampling_y, 1);
132
        } else if (seq_profile == FF_PROFILE_AV1_HIGH) {
133
            infer(subsampling_x, 0);
134
            infer(subsampling_y, 0);
135
        } else {
136
            if (priv->bit_depth == 12) {
137
                fb(1, subsampling_x);
138
                if (current->subsampling_x)
139
                    fb(1, subsampling_y);
140
                else
141
                    infer(subsampling_y, 0);
142
            } else {
143
                infer(subsampling_x, 1);
144
                infer(subsampling_y, 0);
145
            }
146
        }
147

1100
        if (current->subsampling_x && current->subsampling_y) {
148
1100
            fc(2, chroma_sample_position, AV1_CSP_UNKNOWN,
149
                                          AV1_CSP_COLOCATED);
150
        }
151
152
1100
        flag(separate_uv_delta_q);
153
    }
154
155
1100
    return 0;
156
}
157
158
588
static int FUNC(timing_info)(CodedBitstreamContext *ctx, RWContext *rw,
159
                             AV1RawTimingInfo *current)
160
{
161
    int err;
162
163
588
    fc(32, num_units_in_display_tick, 1, MAX_UINT_BITS(32));
164
588
    fc(32, time_scale,                1, MAX_UINT_BITS(32));
165
166
588
    flag(equal_picture_interval);
167
588
    if (current->equal_picture_interval)
168
        uvlc(num_ticks_per_picture_minus_1, 0, MAX_UINT_BITS(32) - 1);
169
170
588
    return 0;
171
}
172
173
588
static int FUNC(decoder_model_info)(CodedBitstreamContext *ctx, RWContext *rw,
174
                                    AV1RawDecoderModelInfo *current)
175
{
176
    int err;
177
178
588
    fb(5, buffer_delay_length_minus_1);
179
588
    fb(32, num_units_in_decoding_tick);
180
588
    fb(5,  buffer_removal_time_length_minus_1);
181
588
    fb(5,  frame_presentation_time_length_minus_1);
182
183
588
    return 0;
184
}
185
186
1100
static int FUNC(sequence_header_obu)(CodedBitstreamContext *ctx, RWContext *rw,
187
                                     AV1RawSequenceHeader *current)
188
{
189
    int i, err;
190
191
1100
    HEADER("Sequence Header");
192
193
1100
    fc(3, seq_profile, FF_PROFILE_AV1_MAIN,
194
                       FF_PROFILE_AV1_PROFESSIONAL);
195
1100
    flag(still_picture);
196
1100
    flag(reduced_still_picture_header);
197
198
1100
    if (current->reduced_still_picture_header) {
199
        infer(timing_info_present_flag,           0);
200
        infer(decoder_model_info_present_flag,    0);
201
        infer(initial_display_delay_present_flag, 0);
202
        infer(operating_points_cnt_minus_1,       0);
203
        infer(operating_point_idc[0],             0);
204
205
        fb(5, seq_level_idx[0]);
206
207
        infer(seq_tier[0], 0);
208
        infer(decoder_model_present_for_this_op[0],         0);
209
        infer(initial_display_delay_present_for_this_op[0], 0);
210
211
    } else {
212
1100
        flag(timing_info_present_flag);
213
1100
        if (current->timing_info_present_flag) {
214
588
            CHECK(FUNC(timing_info)(ctx, rw, &current->timing_info));
215
216
588
            flag(decoder_model_info_present_flag);
217
588
            if (current->decoder_model_info_present_flag) {
218
588
                CHECK(FUNC(decoder_model_info)
219
                          (ctx, rw, &current->decoder_model_info));
220
            }
221
        } else {
222
512
            infer(decoder_model_info_present_flag, 0);
223
        }
224
225
1100
        flag(initial_display_delay_present_flag);
226
227
1100
        fb(5, operating_points_cnt_minus_1);
228
2270
        for (i = 0; i <= current->operating_points_cnt_minus_1; i++) {
229
1170
            fbs(12, operating_point_idc[i], 1, i);
230
1170
            fbs(5,  seq_level_idx[i], 1, i);
231
232
1170
            if (current->seq_level_idx[i] > 7)
233
                flags(seq_tier[i], 1, i);
234
            else
235
1170
                infer(seq_tier[i], 0);
236
237
1170
            if (current->decoder_model_info_present_flag) {
238
588
                flags(decoder_model_present_for_this_op[i], 1, i);
239
588
                if (current->decoder_model_present_for_this_op[i]) {
240
588
                    int n = current->decoder_model_info.buffer_delay_length_minus_1 + 1;
241
588
                    fbs(n, decoder_buffer_delay[i], 1, i);
242
588
                    fbs(n, encoder_buffer_delay[i], 1, i);
243
588
                    flags(low_delay_mode_flag[i], 1, i);
244
                }
245
            } else {
246
582
                infer(decoder_model_present_for_this_op[i], 0);
247
            }
248
249
1170
            if (current->initial_display_delay_present_flag) {
250
588
                flags(initial_display_delay_present_for_this_op[i], 1, i);
251
588
                if (current->initial_display_delay_present_for_this_op[i])
252
588
                    fbs(4, initial_display_delay_minus_1[i], 1, i);
253
            }
254
        }
255
    }
256
257
1100
    fb(4, frame_width_bits_minus_1);
258
1100
    fb(4, frame_height_bits_minus_1);
259
260
1100
    fb(current->frame_width_bits_minus_1  + 1, max_frame_width_minus_1);
261
1100
    fb(current->frame_height_bits_minus_1 + 1, max_frame_height_minus_1);
262
263
1100
    if (current->reduced_still_picture_header)
264
        infer(frame_id_numbers_present_flag, 0);
265
    else
266
1100
        flag(frame_id_numbers_present_flag);
267
1100
    if (current->frame_id_numbers_present_flag) {
268
        fb(4, delta_frame_id_length_minus_2);
269
        fb(3, additional_frame_id_length_minus_1);
270
    }
271
272
1100
    flag(use_128x128_superblock);
273
1100
    flag(enable_filter_intra);
274
1100
    flag(enable_intra_edge_filter);
275
276
1100
    if (current->reduced_still_picture_header) {
277
        infer(enable_interintra_compound, 0);
278
        infer(enable_masked_compound,     0);
279
        infer(enable_warped_motion,       0);
280
        infer(enable_dual_filter,         0);
281
        infer(enable_order_hint,          0);
282
        infer(enable_jnt_comp,            0);
283
        infer(enable_ref_frame_mvs,       0);
284
285
        infer(seq_force_screen_content_tools,
286
              AV1_SELECT_SCREEN_CONTENT_TOOLS);
287
        infer(seq_force_integer_mv,
288
              AV1_SELECT_INTEGER_MV);
289
    } else {
290
1100
        flag(enable_interintra_compound);
291
1100
        flag(enable_masked_compound);
292
1100
        flag(enable_warped_motion);
293
1100
        flag(enable_dual_filter);
294
295
1100
        flag(enable_order_hint);
296
1100
        if (current->enable_order_hint) {
297
1100
            flag(enable_jnt_comp);
298
1100
            flag(enable_ref_frame_mvs);
299
        } else {
300
            infer(enable_jnt_comp,      0);
301
            infer(enable_ref_frame_mvs, 0);
302
        }
303
304
1100
        flag(seq_choose_screen_content_tools);
305
1100
        if (current->seq_choose_screen_content_tools)
306
1100
            infer(seq_force_screen_content_tools,
307
                  AV1_SELECT_SCREEN_CONTENT_TOOLS);
308
        else
309
            fb(1, seq_force_screen_content_tools);
310
1100
        if (current->seq_force_screen_content_tools > 0) {
311
1100
            flag(seq_choose_integer_mv);
312
1100
            if (current->seq_choose_integer_mv)
313
1100
                infer(seq_force_integer_mv,
314
                      AV1_SELECT_INTEGER_MV);
315
            else
316
                fb(1, seq_force_integer_mv);
317
        } else {
318
            infer(seq_force_integer_mv, AV1_SELECT_INTEGER_MV);
319
        }
320
321
1100
        if (current->enable_order_hint)
322
1100
            fb(3, order_hint_bits_minus_1);
323
    }
324
325
1100
    flag(enable_superres);
326
1100
    flag(enable_cdef);
327
1100
    flag(enable_restoration);
328
329
1100
    CHECK(FUNC(color_config)(ctx, rw, &current->color_config,
330
                             current->seq_profile));
331
332
1100
    flag(film_grain_params_present);
333
334
1100
    return 0;
335
}
336
337
2682
static int FUNC(temporal_delimiter_obu)(CodedBitstreamContext *ctx, RWContext *rw)
338
{
339
2682
    CodedBitstreamAV1Context *priv = ctx->priv_data;
340
341
2682
    HEADER("Temporal Delimiter");
342
343
2682
    priv->seen_frame_header = 0;
344
345
2682
    return 0;
346
}
347
348
112
static int FUNC(set_frame_refs)(CodedBitstreamContext *ctx, RWContext *rw,
349
                                AV1RawFrameHeader *current)
350
{
351
112
    CodedBitstreamAV1Context *priv = ctx->priv_data;
352
112
    const AV1RawSequenceHeader *seq = priv->sequence_header;
353
    static const uint8_t ref_frame_list[AV1_NUM_REF_FRAMES - 2] = {
354
        AV1_REF_FRAME_LAST2, AV1_REF_FRAME_LAST3, AV1_REF_FRAME_BWDREF,
355
        AV1_REF_FRAME_ALTREF2, AV1_REF_FRAME_ALTREF
356
    };
357
    int8_t ref_frame_idx[AV1_REFS_PER_FRAME], used_frame[AV1_NUM_REF_FRAMES];
358
    int8_t shifted_order_hints[AV1_NUM_REF_FRAMES];
359
    int cur_frame_hint, latest_order_hint, earliest_order_hint, ref;
360
    int i, j;
361
362
896
    for (i = 0; i < AV1_REFS_PER_FRAME; i++)
363
784
        ref_frame_idx[i] = -1;
364
112
    ref_frame_idx[AV1_REF_FRAME_LAST - AV1_REF_FRAME_LAST] = current->last_frame_idx;
365
112
    ref_frame_idx[AV1_REF_FRAME_GOLDEN - AV1_REF_FRAME_LAST] = current->golden_frame_idx;
366
367
1008
    for (i = 0; i < AV1_NUM_REF_FRAMES; i++)
368
896
        used_frame[i] = 0;
369
112
    used_frame[current->last_frame_idx] = 1;
370
112
    used_frame[current->golden_frame_idx] = 1;
371
372
112
    cur_frame_hint = 1 << (seq->order_hint_bits_minus_1);
373
1008
    for (i = 0; i < AV1_NUM_REF_FRAMES; i++)
374
896
        shifted_order_hints[i] = cur_frame_hint +
375
896
                                 cbs_av1_get_relative_dist(seq, priv->ref[i].order_hint,
376
896
                                                           priv->order_hint);
377
378
112
    latest_order_hint = shifted_order_hints[current->last_frame_idx];
379
112
    earliest_order_hint = shifted_order_hints[current->golden_frame_idx];
380
381
112
    ref = -1;
382
1008
    for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
383
896
        int hint = shifted_order_hints[i];
384

896
        if (!used_frame[i] && hint >= cur_frame_hint &&
385
224
            (ref < 0 || hint >= latest_order_hint)) {
386
232
            ref = i;
387
232
            latest_order_hint = hint;
388
        }
389
    }
390
112
    if (ref >= 0) {
391
112
        ref_frame_idx[AV1_REF_FRAME_ALTREF - AV1_REF_FRAME_LAST] = ref;
392
112
        used_frame[ref] = 1;
393
    }
394
395
112
    ref = -1;
396
1008
    for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
397
896
        int hint = shifted_order_hints[i];
398

896
        if (!used_frame[i] && hint >= cur_frame_hint &&
399
112
            (ref < 0 || hint < earliest_order_hint)) {
400
120
            ref = i;
401
120
            earliest_order_hint = hint;
402
        }
403
    }
404
112
    if (ref >= 0) {
405
112
        ref_frame_idx[AV1_REF_FRAME_BWDREF - AV1_REF_FRAME_LAST] = ref;
406
112
        used_frame[ref] = 1;
407
    }
408
409
112
    ref = -1;
410
1008
    for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
411
896
        int hint = shifted_order_hints[i];
412

896
        if (!used_frame[i] && hint >= cur_frame_hint &&
413
16
            (ref < 0 || hint < earliest_order_hint)) {
414
96
            ref = i;
415
96
            earliest_order_hint = hint;
416
        }
417
    }
418
112
    if (ref >= 0) {
419
96
        ref_frame_idx[AV1_REF_FRAME_ALTREF2 - AV1_REF_FRAME_LAST] = ref;
420
96
        used_frame[ref] = 1;
421
    }
422
423
672
    for (i = 0; i < AV1_REFS_PER_FRAME - 2; i++) {
424
560
        int ref_frame = ref_frame_list[i];
425
560
        if (ref_frame_idx[ref_frame - AV1_REF_FRAME_LAST] < 0 ) {
426
240
            ref = -1;
427
2160
            for (j = 0; j < AV1_NUM_REF_FRAMES; j++) {
428
1920
                int hint = shifted_order_hints[j];
429

1920
                if (!used_frame[j] && hint < cur_frame_hint &&
430
352
                    (ref < 0 || hint >= latest_order_hint)) {
431
448
                    ref = j;
432
448
                    latest_order_hint = hint;
433
                }
434
            }
435
240
            if (ref >= 0) {
436
240
                ref_frame_idx[ref_frame - AV1_REF_FRAME_LAST] = ref;
437
240
                used_frame[ref] = 1;
438
            }
439
        }
440
    }
441
442
112
    ref = -1;
443
1008
    for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
444
896
        int hint = shifted_order_hints[i];
445

896
        if (ref < 0 || hint < earliest_order_hint) {
446
200
            ref = i;
447
200
            earliest_order_hint = hint;
448
        }
449
    }
450
896
    for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
451
784
        if (ref_frame_idx[i] < 0)
452
            ref_frame_idx[i] = ref;
453
784
        infer(ref_frame_idx[i], ref_frame_idx[i]);
454
    }
455
456
112
    return 0;
457
}
458
459
3010
static int FUNC(superres_params)(CodedBitstreamContext *ctx, RWContext *rw,
460
                                 AV1RawFrameHeader *current)
461
{
462
3010
    CodedBitstreamAV1Context  *priv = ctx->priv_data;
463
3010
    const AV1RawSequenceHeader *seq = priv->sequence_header;
464
    int denom, err;
465
466
3010
    if (seq->enable_superres)
467
        flag(use_superres);
468
    else
469
3010
        infer(use_superres, 0);
470
471
3010
    if (current->use_superres) {
472
        fb(3, coded_denom);
473
        denom = current->coded_denom + AV1_SUPERRES_DENOM_MIN;
474
    } else {
475
3010
        denom = AV1_SUPERRES_NUM;
476
    }
477
478
3010
    priv->upscaled_width = priv->frame_width;
479
3010
    priv->frame_width = (priv->upscaled_width * AV1_SUPERRES_NUM +
480
3010
                         denom / 2) / denom;
481
482
3010
    return 0;
483
}
484
485
2890
static int FUNC(frame_size)(CodedBitstreamContext *ctx, RWContext *rw,
486
                            AV1RawFrameHeader *current)
487
{
488
2890
    CodedBitstreamAV1Context  *priv = ctx->priv_data;
489
2890
    const AV1RawSequenceHeader *seq = priv->sequence_header;
490
    int err;
491
492
2890
    if (current->frame_size_override_flag) {
493
24
        fb(seq->frame_width_bits_minus_1 + 1,  frame_width_minus_1);
494
24
        fb(seq->frame_height_bits_minus_1 + 1, frame_height_minus_1);
495
    } else {
496
2866
        infer(frame_width_minus_1,  seq->max_frame_width_minus_1);
497
2866
        infer(frame_height_minus_1, seq->max_frame_height_minus_1);
498
    }
499
500
2890
    priv->frame_width  = current->frame_width_minus_1  + 1;
501
2890
    priv->frame_height = current->frame_height_minus_1 + 1;
502
503
2890
    CHECK(FUNC(superres_params)(ctx, rw, current));
504
505
2890
    return 0;
506
}
507
508
2890
static int FUNC(render_size)(CodedBitstreamContext *ctx, RWContext *rw,
509
                             AV1RawFrameHeader *current)
510
{
511
2890
    CodedBitstreamAV1Context *priv = ctx->priv_data;
512
    int err;
513
514
2890
    flag(render_and_frame_size_different);
515
516
2890
    if (current->render_and_frame_size_different) {
517
        fb(16, render_width_minus_1);
518
        fb(16, render_height_minus_1);
519
    } else {
520
2890
        infer(render_width_minus_1,  current->frame_width_minus_1);
521
2890
        infer(render_height_minus_1, current->frame_height_minus_1);
522
    }
523
524
2890
    priv->render_width  = current->render_width_minus_1  + 1;
525
2890
    priv->render_height = current->render_height_minus_1 + 1;
526
527
2890
    return 0;
528
}
529
530
120
static int FUNC(frame_size_with_refs)(CodedBitstreamContext *ctx, RWContext *rw,
531
                                      AV1RawFrameHeader *current)
532
{
533
120
    CodedBitstreamAV1Context *priv = ctx->priv_data;
534
    int i, err;
535
536
120
    for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
537
120
        flags(found_ref[i], 1, i);
538
120
        if (current->found_ref[i]) {
539
120
            AV1ReferenceFrameState *ref =
540
120
                &priv->ref[current->ref_frame_idx[i]];
541
542
120
            if (!ref->valid) {
543
                av_log(ctx->log_ctx, AV_LOG_ERROR,
544
                       "Missing reference frame needed for frame size "
545
                       "(ref = %d, ref_frame_idx = %d).\n",
546
                       i, current->ref_frame_idx[i]);
547
                return AVERROR_INVALIDDATA;
548
            }
549
550
120
            infer(frame_width_minus_1,   ref->upscaled_width - 1);
551
120
            infer(frame_height_minus_1,  ref->frame_height - 1);
552
120
            infer(render_width_minus_1,  ref->render_width - 1);
553
120
            infer(render_height_minus_1, ref->render_height - 1);
554
555
120
            priv->upscaled_width = ref->upscaled_width;
556
120
            priv->frame_width    = priv->upscaled_width;
557
120
            priv->frame_height   = ref->frame_height;
558
120
            priv->render_width   = ref->render_width;
559
120
            priv->render_height  = ref->render_height;
560
120
            break;
561
        }
562
    }
563
564
120
    if (i >= AV1_REFS_PER_FRAME) {
565
        CHECK(FUNC(frame_size)(ctx, rw, current));
566
        CHECK(FUNC(render_size)(ctx, rw, current));
567
    } else {
568
120
        CHECK(FUNC(superres_params)(ctx, rw, current));
569
    }
570
571
120
    return 0;
572
}
573
574
2574
static int FUNC(interpolation_filter)(CodedBitstreamContext *ctx, RWContext *rw,
575
                                      AV1RawFrameHeader *current)
576
{
577
    int err;
578
579
2574
    flag(is_filter_switchable);
580
2574
    if (current->is_filter_switchable)
581
2054
        infer(interpolation_filter,
582
              AV1_INTERPOLATION_FILTER_SWITCHABLE);
583
    else
584
520
        fb(2, interpolation_filter);
585
586
2574
    return 0;
587
}
588
589
3010
static int FUNC(tile_info)(CodedBitstreamContext *ctx, RWContext *rw,
590
                           AV1RawFrameHeader *current)
591
{
592
3010
    CodedBitstreamAV1Context  *priv = ctx->priv_data;
593
3010
    const AV1RawSequenceHeader *seq = priv->sequence_header;
594
    int mi_cols, mi_rows, sb_cols, sb_rows, sb_shift, sb_size;
595
    int max_tile_width_sb, max_tile_height_sb, max_tile_area_sb;
596
    int min_log2_tile_cols, max_log2_tile_cols, max_log2_tile_rows;
597
    int min_log2_tiles, min_log2_tile_rows;
598
    int i, err;
599
600
3010
    mi_cols = 2 * ((priv->frame_width  + 7) >> 3);
601
3010
    mi_rows = 2 * ((priv->frame_height + 7) >> 3);
602
603
7608
    sb_cols = seq->use_128x128_superblock ? ((mi_cols + 31) >> 5)
604
3010
                                          : ((mi_cols + 15) >> 4);
605
7608
    sb_rows = seq->use_128x128_superblock ? ((mi_rows + 31) >> 5)
606
3010
                                          : ((mi_rows + 15) >> 4);
607
608
3010
    sb_shift = seq->use_128x128_superblock ? 5 : 4;
609
3010
    sb_size  = sb_shift + 2;
610
611
3010
    max_tile_width_sb = AV1_MAX_TILE_WIDTH >> sb_size;
612
3010
    max_tile_area_sb  = AV1_MAX_TILE_AREA  >> (2 * sb_size);
613
614
3010
    min_log2_tile_cols = cbs_av1_tile_log2(max_tile_width_sb, sb_cols);
615
3010
    max_log2_tile_cols = cbs_av1_tile_log2(1, FFMIN(sb_cols, AV1_MAX_TILE_COLS));
616
3010
    max_log2_tile_rows = cbs_av1_tile_log2(1, FFMIN(sb_rows, AV1_MAX_TILE_ROWS));
617
3010
    min_log2_tiles = FFMAX(min_log2_tile_cols,
618
                           cbs_av1_tile_log2(max_tile_area_sb, sb_rows * sb_cols));
619
620
3010
    flag(uniform_tile_spacing_flag);
621
622
3010
    if (current->uniform_tile_spacing_flag) {
623
        int tile_width_sb, tile_height_sb;
624
625
2802
        increment(tile_cols_log2, min_log2_tile_cols, max_log2_tile_cols);
626
627
2802
        tile_width_sb = (sb_cols + (1 << current->tile_cols_log2) - 1) >>
628
2802
            current->tile_cols_log2;
629
2802
        current->tile_cols = (sb_cols + tile_width_sb - 1) / tile_width_sb;
630
631
2802
        min_log2_tile_rows = FFMAX(min_log2_tiles - current->tile_cols_log2, 0);
632
633
2802
        increment(tile_rows_log2, min_log2_tile_rows, max_log2_tile_rows);
634
635
2802
        tile_height_sb = (sb_rows + (1 << current->tile_rows_log2) - 1) >>
636
2802
            current->tile_rows_log2;
637
2802
        current->tile_rows = (sb_rows + tile_height_sb - 1) / tile_height_sb;
638
639
3742
        for (i = 0; i < current->tile_cols - 1; i++)
640
940
            infer(width_in_sbs_minus_1[i], tile_width_sb - 1);
641
2802
        infer(width_in_sbs_minus_1[i],
642
              sb_cols - (current->tile_cols - 1) * tile_width_sb - 1);
643
2974
        for (i = 0; i < current->tile_rows - 1; i++)
644
172
            infer(height_in_sbs_minus_1[i], tile_height_sb - 1);
645
2802
        infer(height_in_sbs_minus_1[i],
646
              sb_rows - (current->tile_rows - 1) * tile_height_sb - 1);
647
648
    } else {
649
        int widest_tile_sb, start_sb, size_sb, max_width, max_height;
650
651
208
        widest_tile_sb = 0;
652
653
208
        start_sb = 0;
654

416
        for (i = 0; start_sb < sb_cols && i < AV1_MAX_TILE_COLS; i++) {
655
208
            max_width = FFMIN(sb_cols - start_sb, max_tile_width_sb);
656
208
            ns(max_width, width_in_sbs_minus_1[i], 1, i);
657
208
            size_sb = current->width_in_sbs_minus_1[i] + 1;
658
208
            widest_tile_sb = FFMAX(size_sb, widest_tile_sb);
659
208
            start_sb += size_sb;
660
        }
661
208
        current->tile_cols_log2 = cbs_av1_tile_log2(1, i);
662
208
        current->tile_cols = i;
663
664
208
        if (min_log2_tiles > 0)
665
            max_tile_area_sb = (sb_rows * sb_cols) >> (min_log2_tiles + 1);
666
        else
667
208
            max_tile_area_sb = sb_rows * sb_cols;
668
208
        max_tile_height_sb = FFMAX(max_tile_area_sb / widest_tile_sb, 1);
669
670
208
        start_sb = 0;
671

1040
        for (i = 0; start_sb < sb_rows && i < AV1_MAX_TILE_ROWS; i++) {
672
832
            max_height = FFMIN(sb_rows - start_sb, max_tile_height_sb);
673
832
            ns(max_height, height_in_sbs_minus_1[i], 1, i);
674
832
            size_sb = current->height_in_sbs_minus_1[i] + 1;
675
832
            start_sb += size_sb;
676
        }
677
208
        current->tile_rows_log2 = cbs_av1_tile_log2(1, i);
678
208
        current->tile_rows = i;
679
    }
680
681
3010
    if (current->tile_cols_log2 > 0 ||
682
2604
        current->tile_rows_log2 > 0) {
683
614
        fb(current->tile_cols_log2 + current->tile_rows_log2,
684
           context_update_tile_id);
685
614
        fb(2, tile_size_bytes_minus1);
686
    } else {
687
2396
        infer(context_update_tile_id, 0);
688
    }
689
690
3010
    priv->tile_cols = current->tile_cols;
691
3010
    priv->tile_rows = current->tile_rows;
692
693
3010
    return 0;
694
}
695
696
3010
static int FUNC(quantization_params)(CodedBitstreamContext *ctx, RWContext *rw,
697
                                     AV1RawFrameHeader *current)
698
{
699
3010
    CodedBitstreamAV1Context  *priv = ctx->priv_data;
700
3010
    const AV1RawSequenceHeader *seq = priv->sequence_header;
701
    int err;
702
703
3010
    fb(8, base_q_idx);
704
705

3010
    delta_q(delta_q_y_dc);
706
707
3010
    if (priv->num_planes > 1) {
708
3010
        if (seq->color_config.separate_uv_delta_q)
709
            flag(diff_uv_delta);
710
        else
711
3010
            infer(diff_uv_delta, 0);
712
713

3010
        delta_q(delta_q_u_dc);
714

3010
        delta_q(delta_q_u_ac);
715
716
3010
        if (current->diff_uv_delta) {
717
            delta_q(delta_q_v_dc);
718
            delta_q(delta_q_v_ac);
719
        } else {
720
3010
            infer(delta_q_v_dc, current->delta_q_u_dc);
721
3010
            infer(delta_q_v_ac, current->delta_q_u_ac);
722
        }
723
    } else {
724
        infer(delta_q_u_dc, 0);
725
        infer(delta_q_u_ac, 0);
726
        infer(delta_q_v_dc, 0);
727
        infer(delta_q_v_ac, 0);
728
    }
729
730
3010
    flag(using_qmatrix);
731
3010
    if (current->using_qmatrix) {
732
        fb(4, qm_y);
733
        fb(4, qm_u);
734
        if (seq->color_config.separate_uv_delta_q)
735
            fb(4, qm_v);
736
        else
737
            infer(qm_v, current->qm_u);
738
    }
739
740
3010
    return 0;
741
}
742
743
3010
static int FUNC(segmentation_params)(CodedBitstreamContext *ctx, RWContext *rw,
744
                                     AV1RawFrameHeader *current)
745
{
746
3010
    CodedBitstreamAV1Context  *priv = ctx->priv_data;
747
    static const uint8_t bits[AV1_SEG_LVL_MAX] = { 8, 6, 6, 6, 6, 3, 0, 0 };
748
    static const uint8_t sign[AV1_SEG_LVL_MAX] = { 1, 1, 1, 1, 1, 0, 0, 0 };
749
    static const uint8_t default_feature_enabled[AV1_SEG_LVL_MAX] = { 0 };
750
    static const int16_t default_feature_value[AV1_SEG_LVL_MAX] = { 0 };
751
    int i, j, err;
752
753
3010
    flag(segmentation_enabled);
754
755
3010
    if (current->segmentation_enabled) {
756
        if (current->primary_ref_frame == AV1_PRIMARY_REF_NONE) {
757
            infer(segmentation_update_map,      1);
758
            infer(segmentation_temporal_update, 0);
759
            infer(segmentation_update_data,     1);
760
        } else {
761
            flag(segmentation_update_map);
762
            if (current->segmentation_update_map)
763
                flag(segmentation_temporal_update);
764
            else
765
                infer(segmentation_temporal_update, 0);
766
            flag(segmentation_update_data);
767
        }
768
769
        for (i = 0; i < AV1_MAX_SEGMENTS; i++) {
770
            const uint8_t *ref_feature_enabled;
771
            const int16_t *ref_feature_value;
772
773
            if (current->primary_ref_frame == AV1_PRIMARY_REF_NONE) {
774
                ref_feature_enabled = default_feature_enabled;
775
                ref_feature_value = default_feature_value;
776
            } else {
777
                ref_feature_enabled =
778
                    priv->ref[current->ref_frame_idx[current->primary_ref_frame]].feature_enabled[i];
779
                ref_feature_value =
780
                    priv->ref[current->ref_frame_idx[current->primary_ref_frame]].feature_value[i];
781
            }
782
783
            for (j = 0; j < AV1_SEG_LVL_MAX; j++) {
784
                if (current->segmentation_update_data) {
785
                    flags(feature_enabled[i][j], 2, i, j);
786
787
                    if (current->feature_enabled[i][j] && bits[j] > 0) {
788
                        if (sign[j])
789
                            sus(1 + bits[j], feature_value[i][j], 2, i, j);
790
                        else
791
                            fbs(bits[j], feature_value[i][j], 2, i, j);
792
                    } else {
793
                        infer(feature_value[i][j], 0);
794
                    }
795
                } else {
796
                    infer(feature_enabled[i][j], ref_feature_enabled[j]);
797
                    infer(feature_value[i][j], ref_feature_value[j]);
798
                }
799
            }
800
        }
801
    } else {
802
27090
        for (i = 0; i < AV1_MAX_SEGMENTS; i++) {
803
216720
            for (j = 0; j < AV1_SEG_LVL_MAX; j++) {
804
192640
                infer(feature_enabled[i][j], 0);
805
192640
                infer(feature_value[i][j],   0);
806
            }
807
        }
808
    }
809
810
3010
    return 0;
811
}
812
813
3010
static int FUNC(delta_q_params)(CodedBitstreamContext *ctx, RWContext *rw,
814
                                AV1RawFrameHeader *current)
815
{
816
    int err;
817
818
3010
    if (current->base_q_idx > 0)
819
3010
        flag(delta_q_present);
820
    else
821
        infer(delta_q_present, 0);
822
823
3010
    if (current->delta_q_present)
824
32
        fb(2, delta_q_res);
825
826
3010
    return 0;
827
}
828
829
3010
static int FUNC(delta_lf_params)(CodedBitstreamContext *ctx, RWContext *rw,
830
                                 AV1RawFrameHeader *current)
831
{
832
    int err;
833
834
3010
    if (current->delta_q_present) {
835
32
        if (!current->allow_intrabc)
836
32
            flag(delta_lf_present);
837
        else
838
            infer(delta_lf_present, 0);
839
32
        if (current->delta_lf_present) {
840
            fb(2, delta_lf_res);
841
            flag(delta_lf_multi);
842
        } else {
843
32
            infer(delta_lf_res,   0);
844
32
            infer(delta_lf_multi, 0);
845
        }
846
    } else {
847
2978
        infer(delta_lf_present, 0);
848
2978
        infer(delta_lf_res,     0);
849
2978
        infer(delta_lf_multi,   0);
850
    }
851
852
3010
    return 0;
853
}
854
855
3010
static int FUNC(loop_filter_params)(CodedBitstreamContext *ctx, RWContext *rw,
856
                                    AV1RawFrameHeader *current)
857
{
858
3010
    CodedBitstreamAV1Context *priv = ctx->priv_data;
859
    static const int8_t default_loop_filter_ref_deltas[AV1_TOTAL_REFS_PER_FRAME] =
860
        { 1, 0, 0, 0, -1, 0, -1, -1 };
861
    static const int8_t default_loop_filter_mode_deltas[2] = { 0, 0 };
862
    int i, err;
863
864

3010
    if (priv->coded_lossless || current->allow_intrabc) {
865
        infer(loop_filter_level[0], 0);
866
        infer(loop_filter_level[1], 0);
867
        infer(loop_filter_ref_deltas[AV1_REF_FRAME_INTRA],    1);
868
        infer(loop_filter_ref_deltas[AV1_REF_FRAME_LAST],     0);
869
        infer(loop_filter_ref_deltas[AV1_REF_FRAME_LAST2],    0);
870
        infer(loop_filter_ref_deltas[AV1_REF_FRAME_LAST3],    0);
871
        infer(loop_filter_ref_deltas[AV1_REF_FRAME_BWDREF],   0);
872
        infer(loop_filter_ref_deltas[AV1_REF_FRAME_GOLDEN],  -1);
873
        infer(loop_filter_ref_deltas[AV1_REF_FRAME_ALTREF],  -1);
874
        infer(loop_filter_ref_deltas[AV1_REF_FRAME_ALTREF2], -1);
875
        for (i = 0; i < 2; i++)
876
            infer(loop_filter_mode_deltas[i], 0);
877
        return 0;
878
    }
879
880
3010
    fb(6, loop_filter_level[0]);
881
3010
    fb(6, loop_filter_level[1]);
882
883
3010
    if (priv->num_planes > 1) {
884
3010
        if (current->loop_filter_level[0] ||
885
1484
            current->loop_filter_level[1]) {
886
1558
            fb(6, loop_filter_level[2]);
887
1558
            fb(6, loop_filter_level[3]);
888
        }
889
    }
890
891
3010
    fb(3, loop_filter_sharpness);
892
893
3010
    flag(loop_filter_delta_enabled);
894
3010
    if (current->loop_filter_delta_enabled) {
895
        const int8_t *ref_loop_filter_ref_deltas, *ref_loop_filter_mode_deltas;
896
897
3010
        if (current->primary_ref_frame == AV1_PRIMARY_REF_NONE) {
898
804
            ref_loop_filter_ref_deltas = default_loop_filter_ref_deltas;
899
804
            ref_loop_filter_mode_deltas = default_loop_filter_mode_deltas;
900
        } else {
901
2206
            ref_loop_filter_ref_deltas =
902
2206
                priv->ref[current->ref_frame_idx[current->primary_ref_frame]].loop_filter_ref_deltas;
903
2206
            ref_loop_filter_mode_deltas =
904
2206
                priv->ref[current->ref_frame_idx[current->primary_ref_frame]].loop_filter_mode_deltas;
905
        }
906
907
3010
        flag(loop_filter_delta_update);
908
27090
        for (i = 0; i < AV1_TOTAL_REFS_PER_FRAME; i++) {
909
24080
            if (current->loop_filter_delta_update)
910
6432
                flags(update_ref_delta[i], 1, i);
911
            else
912
17648
                infer(update_ref_delta[i], 0);
913
24080
            if (current->update_ref_delta[i])
914
                sus(1 + 6, loop_filter_ref_deltas[i], 1, i);
915
            else
916
24080
                infer(loop_filter_ref_deltas[i], ref_loop_filter_ref_deltas[i]);
917
        }
918
9030
        for (i = 0; i < 2; i++) {
919
6020
            if (current->loop_filter_delta_update)
920
1608
                flags(update_mode_delta[i], 1, i);
921
            else
922
4412
                infer(update_mode_delta[i], 0);
923
6020
            if (current->update_mode_delta[i])
924
                sus(1 + 6, loop_filter_mode_deltas[i], 1, i);
925
            else
926
6020
                infer(loop_filter_mode_deltas[i], ref_loop_filter_mode_deltas[i]);
927
        }
928
    } else {
929
        for (i = 0; i < AV1_TOTAL_REFS_PER_FRAME; i++)
930
            infer(loop_filter_ref_deltas[i], default_loop_filter_ref_deltas[i]);
931
        for (i = 0; i < 2; i++)
932
            infer(loop_filter_mode_deltas[i], default_loop_filter_mode_deltas[i]);
933
    }
934
935
3010
    return 0;
936
}
937
938
3010
static int FUNC(cdef_params)(CodedBitstreamContext *ctx, RWContext *rw,
939
                             AV1RawFrameHeader *current)
940
{
941
3010
    CodedBitstreamAV1Context  *priv = ctx->priv_data;
942
3010
    const AV1RawSequenceHeader *seq = priv->sequence_header;
943
    int i, err;
944
945

3010
    if (priv->coded_lossless || current->allow_intrabc ||
946
3010
        !seq->enable_cdef) {
947
342
        infer(cdef_damping_minus_3, 0);
948
342
        infer(cdef_bits, 0);
949
342
        infer(cdef_y_pri_strength[0],  0);
950
342
        infer(cdef_y_sec_strength[0],  0);
951
342
        infer(cdef_uv_pri_strength[0], 0);
952
342
        infer(cdef_uv_sec_strength[0], 0);
953
954
342
        return 0;
955
    }
956
957
2668
    fb(2, cdef_damping_minus_3);
958
2668
    fb(2, cdef_bits);
959
960
13280
    for (i = 0; i < (1 << current->cdef_bits); i++) {
961
10612
        fbs(4, cdef_y_pri_strength[i], 1, i);
962
10612
        fbs(2, cdef_y_sec_strength[i], 1, i);
963
964
10612
        if (priv->num_planes > 1) {
965
10612
            fbs(4, cdef_uv_pri_strength[i], 1, i);
966
10612
            fbs(2, cdef_uv_sec_strength[i], 1, i);
967
        }
968
    }
969
970
2668
    return 0;
971
}
972
973
3010
static int FUNC(lr_params)(CodedBitstreamContext *ctx, RWContext *rw,
974
                           AV1RawFrameHeader *current)
975
{
976
3010
    CodedBitstreamAV1Context  *priv = ctx->priv_data;
977
3010
    const AV1RawSequenceHeader *seq = priv->sequence_header;
978
    int uses_lr,  uses_chroma_lr;
979
    int i, err;
980
981

3010
    if (priv->all_lossless || current->allow_intrabc ||
982
3010
        !seq->enable_restoration) {
983
256
        return 0;
984
    }
985
986
2754
    uses_lr = uses_chroma_lr = 0;
987
11016
    for (i = 0; i < priv->num_planes; i++) {
988
8262
        fbs(2, lr_type[i], 1, i);
989
990
8262
        if (current->lr_type[i] != AV1_RESTORE_NONE) {
991
2212
            uses_lr = 1;
992
2212
            if (i > 0)
993
848
                uses_chroma_lr = 1;
994
        }
995
    }
996
997
2754
    if (uses_lr) {
998
1518
        if (seq->use_128x128_superblock)
999
974
            increment(lr_unit_shift, 1, 2);
1000
        else
1001
544
            increment(lr_unit_shift, 0, 2);
1002
1003
1518
        if(seq->color_config.subsampling_x &&
1004

1518
           seq->color_config.subsampling_y && uses_chroma_lr) {
1005
554
            fb(1, lr_uv_shift);
1006
        } else {
1007
964
            infer(lr_uv_shift, 0);
1008
        }
1009
    }
1010
1011
2754
    return 0;
1012
}
1013
1014
3010
static int FUNC(read_tx_mode)(CodedBitstreamContext *ctx, RWContext *rw,
1015
                              AV1RawFrameHeader *current)
1016
{
1017
3010
    CodedBitstreamAV1Context *priv = ctx->priv_data;
1018
    int err;
1019
1020
3010
    if (priv->coded_lossless)
1021
        infer(tx_mode, 0);
1022
    else
1023
3010
        increment(tx_mode, 1, 2);
1024
1025
3010
    return 0;
1026
}
1027
1028
3010
static int FUNC(frame_reference_mode)(CodedBitstreamContext *ctx, RWContext *rw,
1029
                                      AV1RawFrameHeader *current)
1030
{
1031
    int err;
1032
1033
3010
    if (current->frame_type == AV1_FRAME_INTRA_ONLY ||
1034
3010
        current->frame_type == AV1_FRAME_KEY)
1035
436
        infer(reference_select, 0);
1036
    else
1037
2574
        flag(reference_select);
1038
1039
3010
    return 0;
1040
}
1041
1042
3010
static int FUNC(skip_mode_params)(CodedBitstreamContext *ctx, RWContext *rw,
1043
                                  AV1RawFrameHeader *current)
1044
{
1045
3010
    CodedBitstreamAV1Context  *priv = ctx->priv_data;
1046
3010
    const AV1RawSequenceHeader *seq = priv->sequence_header;
1047
    int skip_mode_allowed;
1048
    int err;
1049
1050
3010
    if (current->frame_type == AV1_FRAME_KEY ||
1051
2574
        current->frame_type == AV1_FRAME_INTRA_ONLY ||
1052

2574
        !current->reference_select || !seq->enable_order_hint) {
1053
1596
        skip_mode_allowed = 0;
1054
    } else {
1055
        int forward_idx,  backward_idx;
1056
        int forward_hint, backward_hint;
1057
        int ref_hint, dist, i;
1058
1059
1414
        forward_idx  = -1;
1060
1414
        backward_idx = -1;
1061
11312
        for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
1062
9898
            ref_hint = priv->ref[current->ref_frame_idx[i]].order_hint;
1063
9898
            dist = cbs_av1_get_relative_dist(seq, ref_hint,
1064
9898
                                             priv->order_hint);
1065
9898
            if (dist < 0) {
1066

15278
                if (forward_idx < 0 ||
1067
6932
                    cbs_av1_get_relative_dist(seq, ref_hint,
1068
                                              forward_hint) > 0) {
1069
1602
                    forward_idx  = i;
1070
1602
                    forward_hint = ref_hint;
1071
                }
1072
1552
            } else if (dist > 0) {
1073

2168
                if (backward_idx < 0 ||
1074
672
                    cbs_av1_get_relative_dist(seq, ref_hint,
1075
                                              backward_hint) < 0) {
1076
824
                    backward_idx  = i;
1077
824
                    backward_hint = ref_hint;
1078
                }
1079
            }
1080
        }
1081
1082
1414
        if (forward_idx < 0) {
1083
            skip_mode_allowed = 0;
1084
1414
        } else if (backward_idx >= 0) {
1085
824
            skip_mode_allowed = 1;
1086
            // Frames for skip mode are forward_idx and backward_idx.
1087
        } else {
1088
            int second_forward_idx;
1089
            int second_forward_hint;
1090
1091
590
            second_forward_idx = -1;
1092
4720
            for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
1093
4130
                ref_hint = priv->ref[current->ref_frame_idx[i]].order_hint;
1094
4130
                if (cbs_av1_get_relative_dist(seq, ref_hint,
1095
                                              forward_hint) < 0) {
1096

6044
                    if (second_forward_idx < 0 ||
1097
2740
                        cbs_av1_get_relative_dist(seq, ref_hint,
1098
                                                  second_forward_hint) > 0) {
1099
596
                        second_forward_idx  = i;
1100
596
                        second_forward_hint = ref_hint;
1101
                    }
1102
                }
1103
            }
1104
1105
590
            if (second_forward_idx < 0) {
1106
26
                skip_mode_allowed = 0;
1107
            } else {
1108
564
                skip_mode_allowed = 1;
1109
                // Frames for skip mode are forward_idx and second_forward_idx.
1110
            }
1111
        }
1112
    }
1113
1114
3010
    if (skip_mode_allowed)
1115
1388
        flag(skip_mode_present);
1116
    else
1117
1622
        infer(skip_mode_present, 0);
1118
1119
3010
    return 0;
1120
}
1121
1122
736
static int FUNC(global_motion_param)(CodedBitstreamContext *ctx, RWContext *rw,
1123
                                     AV1RawFrameHeader *current,
1124
                                     int type, int ref, int idx)
1125
{
1126
    uint32_t abs_bits, prec_bits, num_syms;
1127
    int err;
1128
1129
736
    if (idx < 2) {
1130
368
        if (type == AV1_WARP_MODEL_TRANSLATION) {
1131
            abs_bits  = AV1_GM_ABS_TRANS_ONLY_BITS  - !current->allow_high_precision_mv;
1132
            prec_bits = AV1_GM_TRANS_ONLY_PREC_BITS - !current->allow_high_precision_mv;
1133
        } else {
1134
368
            abs_bits  = AV1_GM_ABS_TRANS_BITS;
1135
368
            prec_bits = AV1_GM_TRANS_PREC_BITS;
1136
        }
1137
    } else {
1138
368
        abs_bits  = AV1_GM_ABS_ALPHA_BITS;
1139
368
        prec_bits = AV1_GM_ALPHA_PREC_BITS;
1140
    }
1141
1142
736
    num_syms = 2 * (1 << abs_bits) + 1;
1143
736
    subexp(gm_params[ref][idx], num_syms, 2, ref, idx);
1144
1145
    // Actual gm_params value is not reconstructed here.
1146
    (void)prec_bits;
1147
1148
736
    return 0;
1149
}
1150
1151
3010
static int FUNC(global_motion_params)(CodedBitstreamContext *ctx, RWContext *rw,
1152
                                      AV1RawFrameHeader *current)
1153
{
1154
    int ref, type;
1155
    int err;
1156
1157
3010
    if (current->frame_type == AV1_FRAME_KEY ||
1158
2574
        current->frame_type == AV1_FRAME_INTRA_ONLY)
1159
436
        return 0;
1160
1161
20592
    for (ref = AV1_REF_FRAME_LAST; ref <= AV1_REF_FRAME_ALTREF; ref++) {
1162
18018
        flags(is_global[ref], 1, ref);
1163
18018
        if (current->is_global[ref]) {
1164
184
            flags(is_rot_zoom[ref], 1, ref);
1165
184
            if (current->is_rot_zoom[ref]) {
1166
184
                type = AV1_WARP_MODEL_ROTZOOM;
1167
            } else {
1168
                flags(is_translation[ref], 1, ref);
1169
                type = current->is_translation[ref] ? AV1_WARP_MODEL_TRANSLATION
1170
                                                    : AV1_WARP_MODEL_AFFINE;
1171
            }
1172
        } else {
1173
17834
            type = AV1_WARP_MODEL_IDENTITY;
1174
        }
1175
1176
18018
        if (type >= AV1_WARP_MODEL_ROTZOOM) {
1177
184
            CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 2));
1178
184
            CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 3));
1179
184
            if (type == AV1_WARP_MODEL_AFFINE) {
1180
                CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 4));
1181
                CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 5));
1182
            } else {
1183
                // gm_params[ref][4] = -gm_params[ref][3]
1184
                // gm_params[ref][5] =  gm_params[ref][2]
1185
            }
1186
        }
1187
18018
        if (type >= AV1_WARP_MODEL_TRANSLATION) {
1188
184
            CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 0));
1189
184
            CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 1));
1190
        }
1191
    }
1192
1193
2574
    return 0;
1194
}
1195
1196
3010
static int FUNC(film_grain_params)(CodedBitstreamContext *ctx, RWContext *rw,
1197
                                   AV1RawFilmGrainParams *current,
1198
                                   AV1RawFrameHeader *frame_header)
1199
{
1200
3010
    CodedBitstreamAV1Context  *priv = ctx->priv_data;
1201
3010
    const AV1RawSequenceHeader *seq = priv->sequence_header;
1202
    int num_pos_luma, num_pos_chroma;
1203
    int i, err;
1204
1205
3010
    if (!seq->film_grain_params_present ||
1206

176
        (!frame_header->show_frame && !frame_header->showable_frame))
1207
2850
        return 0;
1208
1209
160
    flag(apply_grain);
1210
1211
160
    if (!current->apply_grain)
1212
        return 0;
1213
1214
160
    fb(16, grain_seed);
1215
1216
160
    if (frame_header->frame_type == AV1_FRAME_INTER)
1217
144
        flag(update_grain);
1218
    else
1219
16
        infer(update_grain, 1);
1220
1221
160
    if (!current->update_grain) {
1222
        fb(3, film_grain_params_ref_idx);
1223
        return 0;
1224
    }
1225
1226
160
    fc(4, num_y_points, 0, 14);
1227
1264
    for (i = 0; i < current->num_y_points; i++) {
1228

1104
        fcs(8, point_y_value[i],
1229
            i ? current->point_y_value[i - 1] + 1 : 0,
1230
            MAX_UINT_BITS(8) - (current->num_y_points - i - 1),
1231
            1, i);
1232
1104
        fbs(8, point_y_scaling[i], 1, i);
1233
    }
1234
1235
160
    if (seq->color_config.mono_chrome)
1236
        infer(chroma_scaling_from_luma, 0);
1237
    else
1238
160
        flag(chroma_scaling_from_luma);
1239
1240
160
    if (seq->color_config.mono_chrome ||
1241
160
        current->chroma_scaling_from_luma ||
1242
160
        (seq->color_config.subsampling_x == 1 &&
1243
160
         seq->color_config.subsampling_y == 1 &&
1244
160
         current->num_y_points == 0)) {
1245
        infer(num_cb_points, 0);
1246
        infer(num_cr_points, 0);
1247
    } else {
1248
160
        fc(4, num_cb_points, 0, 10);
1249
784
        for (i = 0; i < current->num_cb_points; i++) {
1250

624
            fcs(8, point_cb_value[i],
1251
                i ? current->point_cb_value[i - 1] + 1 : 0,
1252
                MAX_UINT_BITS(8) - (current->num_cb_points - i - 1),
1253
                1, i);
1254
624
            fbs(8, point_cb_scaling[i], 1, i);
1255
        }
1256
160
        fc(4, num_cr_points, 0, 10);
1257
800
        for (i = 0; i < current->num_cr_points; i++) {
1258

640
            fcs(8, point_cr_value[i],
1259
                i ? current->point_cr_value[i - 1] + 1 : 0,
1260
                MAX_UINT_BITS(8) - (current->num_cr_points - i - 1),
1261
                1, i);
1262
640
            fbs(8, point_cr_scaling[i], 1, i);
1263
        }
1264
    }
1265
1266
160
    fb(2, grain_scaling_minus_8);
1267
160
    fb(2, ar_coeff_lag);
1268
160
    num_pos_luma = 2 * current->ar_coeff_lag * (current->ar_coeff_lag + 1);
1269
160
    if (current->num_y_points) {
1270
160
        num_pos_chroma = num_pos_luma + 1;
1271
4000
        for (i = 0; i < num_pos_luma; i++)
1272
3840
            fbs(8, ar_coeffs_y_plus_128[i], 1, i);
1273
    } else {
1274
        num_pos_chroma = num_pos_luma;
1275
    }
1276

160
    if (current->chroma_scaling_from_luma || current->num_cb_points) {
1277
4160
        for (i = 0; i < num_pos_chroma; i++)
1278
4000
            fbs(8, ar_coeffs_cb_plus_128[i], 1, i);
1279
    }
1280

160
    if (current->chroma_scaling_from_luma || current->num_cr_points) {
1281
4160
        for (i = 0; i < num_pos_chroma; i++)
1282
4000
            fbs(8, ar_coeffs_cr_plus_128[i], 1, i);
1283
    }
1284
160
    fb(2, ar_coeff_shift_minus_6);
1285
160
    fb(2, grain_scale_shift);
1286
160
    if (current->num_cb_points) {
1287
160
        fb(8, cb_mult);
1288
160
        fb(8, cb_luma_mult);
1289
160
        fb(9, cb_offset);
1290
    }
1291
160
    if (current->num_cr_points) {
1292
160
        fb(8, cr_mult);
1293
160
        fb(8, cr_luma_mult);
1294
160
        fb(9, cr_offset);
1295
    }
1296
1297
160
    flag(overlap_flag);
1298
160
    flag(clip_to_restricted_range);
1299
1300
160
    return 0;
1301
}
1302
1303
3402
static int FUNC(uncompressed_header)(CodedBitstreamContext *ctx, RWContext *rw,
1304
                                     AV1RawFrameHeader *current)
1305
{
1306
3402
    CodedBitstreamAV1Context *priv = ctx->priv_data;
1307
    const AV1RawSequenceHeader *seq;
1308
    int id_len, diff_len, all_frames, frame_is_intra, order_hint_bits;
1309
    int i, err;
1310
1311
3402
    if (!priv->sequence_header) {
1312
        av_log(ctx->log_ctx, AV_LOG_ERROR, "No sequence header available: "
1313
               "unable to decode frame header.\n");
1314
        return AVERROR_INVALIDDATA;
1315
    }
1316
3402
    seq = priv->sequence_header;
1317
1318
3402
    id_len = seq->additional_frame_id_length_minus_1 +
1319
3402
             seq->delta_frame_id_length_minus_2 + 3;
1320
3402
    all_frames = (1 << AV1_NUM_REF_FRAMES) - 1;
1321
1322
3402
    if (seq->reduced_still_picture_header) {
1323
        infer(show_existing_frame, 0);
1324
        infer(frame_type,     AV1_FRAME_KEY);
1325
        infer(show_frame,     1);
1326
        infer(showable_frame, 0);
1327
        frame_is_intra = 1;
1328
1329
    } else {
1330
3402
        flag(show_existing_frame);
1331
1332
3402
        if (current->show_existing_frame) {
1333
            AV1ReferenceFrameState *ref;
1334
1335
392
            fb(3, frame_to_show_map_idx);
1336
392
            ref = &priv->ref[current->frame_to_show_map_idx];
1337
1338
392
            if (!ref->valid) {
1339
                av_log(ctx->log_ctx, AV_LOG_ERROR, "Missing reference frame needed for "
1340
                       "show_existing_frame (frame_to_show_map_idx = %d).\n",
1341
                       current->frame_to_show_map_idx);
1342
                return AVERROR_INVALIDDATA;
1343
            }
1344
1345
392
            if (seq->decoder_model_info_present_flag &&
1346
56
                !seq->timing_info.equal_picture_interval) {
1347
56
                fb(seq->decoder_model_info.frame_presentation_time_length_minus_1 + 1,
1348
                   frame_presentation_time);
1349
            }
1350
1351
392
            if (seq->frame_id_numbers_present_flag)
1352
                fb(id_len, display_frame_id);
1353
1354
392
            infer(frame_type, ref->frame_type);
1355
392
            if (current->frame_type == AV1_FRAME_KEY) {
1356
                infer(refresh_frame_flags, all_frames);
1357
1358
                // Section 7.21
1359
                infer(current_frame_id, ref->frame_id);
1360
                priv->upscaled_width  = ref->upscaled_width;
1361
                priv->frame_width     = ref->frame_width;
1362
                priv->frame_height    = ref->frame_height;
1363
                priv->render_width    = ref->render_width;
1364
                priv->render_height   = ref->render_height;
1365
                priv->bit_depth       = ref->bit_depth;
1366
                priv->order_hint      = ref->order_hint;
1367
            } else
1368
392
                infer(refresh_frame_flags, 0);
1369
1370
392
            infer(frame_width_minus_1,   ref->upscaled_width - 1);
1371
392
            infer(frame_height_minus_1,  ref->frame_height - 1);
1372
392
            infer(render_width_minus_1,  ref->render_width - 1);
1373
392
            infer(render_height_minus_1, ref->render_height - 1);
1374
1375
            // Section 7.20
1376
392
            goto update_refs;
1377
        }
1378
1379
3010
        fb(2, frame_type);
1380
6020
        frame_is_intra = (current->frame_type == AV1_FRAME_INTRA_ONLY ||
1381
3010
                          current->frame_type == AV1_FRAME_KEY);
1382
1383
3010
        flag(show_frame);
1384
3010
        if (current->show_frame &&
1385
2450
            seq->decoder_model_info_present_flag &&
1386
648
            !seq->timing_info.equal_picture_interval) {
1387
648
            fb(seq->decoder_model_info.frame_presentation_time_length_minus_1 + 1,
1388
               frame_presentation_time);
1389
        }
1390
3010
        if (current->show_frame)
1391
2450
            infer(showable_frame, current->frame_type != AV1_FRAME_KEY);
1392
        else
1393
560
            flag(showable_frame);
1394
1395
3010
        if (current->frame_type == AV1_FRAME_SWITCH ||
1396

3002
            (current->frame_type == AV1_FRAME_KEY && current->show_frame))
1397
444
            infer(error_resilient_mode, 1);
1398
        else
1399
2566
            flag(error_resilient_mode);
1400
    }
1401
1402

3010
    if (current->frame_type == AV1_FRAME_KEY && current->show_frame) {
1403
3924
        for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
1404
3488
            priv->ref[i].valid = 0;
1405
3488
            priv->ref[i].order_hint = 0;
1406
        }
1407
    }
1408
1409
3010
    flag(disable_cdf_update);
1410
1411
3010
    if (seq->seq_force_screen_content_tools ==
1412
        AV1_SELECT_SCREEN_CONTENT_TOOLS) {
1413
3010
        flag(allow_screen_content_tools);
1414
    } else {
1415
        infer(allow_screen_content_tools,
1416
              seq->seq_force_screen_content_tools);
1417
    }
1418
3010
    if (current->allow_screen_content_tools) {
1419
86
        if (seq->seq_force_integer_mv == AV1_SELECT_INTEGER_MV)
1420
86
            flag(force_integer_mv);
1421
        else
1422
            infer(force_integer_mv, seq->seq_force_integer_mv);
1423
    } else {
1424
2924
        infer(force_integer_mv, 0);
1425
    }
1426
1427
3010
    if (seq->frame_id_numbers_present_flag) {
1428
        fb(id_len, current_frame_id);
1429
1430
        diff_len = seq->delta_frame_id_length_minus_2 + 2;
1431
        for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
1432
            if (current->current_frame_id > (1 << diff_len)) {
1433
                if (priv->ref[i].frame_id > current->current_frame_id ||
1434
                    priv->ref[i].frame_id < (current->current_frame_id -
1435
                                             (1 << diff_len)))
1436
                    priv->ref[i].valid = 0;
1437
            } else {
1438
                if (priv->ref[i].frame_id > current->current_frame_id &&
1439
                    priv->ref[i].frame_id < ((1 << id_len) +
1440
                                             current->current_frame_id -
1441
                                             (1 << diff_len)))
1442
                    priv->ref[i].valid = 0;
1443
            }
1444
        }
1445
    } else {
1446
3010
        infer(current_frame_id, 0);
1447
    }
1448
1449
3010
    if (current->frame_type == AV1_FRAME_SWITCH)
1450
8
        infer(frame_size_override_flag, 1);
1451
3002
    else if(seq->reduced_still_picture_header)
1452
        infer(frame_size_override_flag, 0);
1453
    else
1454
3002
        flag(frame_size_override_flag);
1455
1456
3010
    order_hint_bits =
1457
3010
        seq->enable_order_hint ? seq->order_hint_bits_minus_1 + 1 : 0;
1458
3010
    if (order_hint_bits > 0)
1459
3010
        fb(order_hint_bits, order_hint);
1460
    else
1461
        infer(order_hint, 0);
1462
3010
    priv->order_hint = current->order_hint;
1463
1464

3010
    if (frame_is_intra || current->error_resilient_mode)
1465
444
        infer(primary_ref_frame, AV1_PRIMARY_REF_NONE);
1466
    else
1467
2566
        fb(3, primary_ref_frame);
1468
1469
3010
    if (seq->decoder_model_info_present_flag) {
1470
776
        flag(buffer_removal_time_present_flag);
1471
776
        if (current->buffer_removal_time_present_flag) {
1472
1552
            for (i = 0; i <= seq->operating_points_cnt_minus_1; i++) {
1473
776
                if (seq->decoder_model_present_for_this_op[i]) {
1474
776
                    int op_pt_idc = seq->operating_point_idc[i];
1475
776
                    int in_temporal_layer = (op_pt_idc >>  priv->temporal_id    ) & 1;
1476
776
                    int in_spatial_layer  = (op_pt_idc >> (priv->spatial_id + 8)) & 1;
1477

776
                    if (seq->operating_point_idc[i] == 0 ||
1478
                        (in_temporal_layer && in_spatial_layer)) {
1479
776
                        fbs(seq->decoder_model_info.buffer_removal_time_length_minus_1 + 1,
1480
                            buffer_removal_time[i], 1, i);
1481
                    }
1482
                }
1483
            }
1484
        }
1485
    }
1486
1487
3010
    if (current->frame_type == AV1_FRAME_SWITCH ||
1488

3002
        (current->frame_type == AV1_FRAME_KEY && current->show_frame))
1489
444
        infer(refresh_frame_flags, all_frames);
1490
    else
1491
2566
        fb(8, refresh_frame_flags);
1492
1493

3010
    if (!frame_is_intra || current->refresh_frame_flags != all_frames) {
1494
2574
        if (seq->enable_order_hint) {
1495
23166
            for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
1496
20592
                if (current->error_resilient_mode)
1497
64
                    fbs(order_hint_bits, ref_order_hint[i], 1, i);
1498
                else
1499
20528
                    infer(ref_order_hint[i], priv->ref[i].order_hint);
1500
20592
                if (current->ref_order_hint[i] != priv->ref[i].order_hint)
1501
                    priv->ref[i].valid = 0;
1502
            }
1503
        }
1504
    }
1505
1506
3010
    if (current->frame_type == AV1_FRAME_KEY ||
1507
2574
        current->frame_type == AV1_FRAME_INTRA_ONLY) {
1508
436
        CHECK(FUNC(frame_size)(ctx, rw, current));
1509
436
        CHECK(FUNC(render_size)(ctx, rw, current));
1510
1511
436
        if (current->allow_screen_content_tools &&
1512
8
            priv->upscaled_width == priv->frame_width)
1513
8
            flag(allow_intrabc);
1514
        else
1515
428
            infer(allow_intrabc, 0);
1516
1517
    } else {
1518
2574
        if (!seq->enable_order_hint) {
1519
            infer(frame_refs_short_signaling, 0);
1520
        } else {
1521
2574
            flag(frame_refs_short_signaling);
1522
2574
            if (current->frame_refs_short_signaling) {
1523
112
                fb(3, last_frame_idx);
1524
112
                fb(3, golden_frame_idx);
1525
112
                CHECK(FUNC(set_frame_refs)(ctx, rw, current));
1526
            }
1527
        }
1528
1529
20592
        for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
1530
18018
            if (!current->frame_refs_short_signaling)
1531
17234
                fbs(3, ref_frame_idx[i], 1, i);
1532
18018
            if (seq->frame_id_numbers_present_flag) {
1533
                fbs(seq->delta_frame_id_length_minus_2 + 2,
1534
                    delta_frame_id_minus1[i], 1, i);
1535
            }
1536
        }
1537
1538
2574
        if (current->frame_size_override_flag &&
1539
128
            !current->error_resilient_mode) {
1540
120
            CHECK(FUNC(frame_size_with_refs)(ctx, rw, current));
1541
        } else {
1542
2454
            CHECK(FUNC(frame_size)(ctx, rw, current));
1543
2454
            CHECK(FUNC(render_size)(ctx, rw, current));
1544
        }
1545
1546
2574
        if (current->force_integer_mv)
1547
            infer(allow_high_precision_mv, 0);
1548
        else
1549
2574
            flag(allow_high_precision_mv);
1550
1551
2574
        CHECK(FUNC(interpolation_filter)(ctx, rw, current));
1552
1553
2574
        flag(is_motion_mode_switchable);
1554
1555
2574
        if (current->error_resilient_mode ||
1556
2566
            !seq->enable_ref_frame_mvs)
1557
248
            infer(use_ref_frame_mvs, 0);
1558
        else
1559
2326
            flag(use_ref_frame_mvs);
1560
1561
2574
        infer(allow_intrabc, 0);
1562
    }
1563
1564
    if (!frame_is_intra) {
1565
        // Derive reference frame sign biases.
1566
    }
1567
1568

3010
    if (seq->reduced_still_picture_header || current->disable_cdf_update)
1569
        infer(disable_frame_end_update_cdf, 1);
1570
    else
1571
3010
        flag(disable_frame_end_update_cdf);
1572
1573
3010
    if (current->primary_ref_frame == AV1_PRIMARY_REF_NONE) {
1574
        // Init non-coeff CDFs.
1575
        // Setup past independence.
1576
    } else {
1577
        // Load CDF tables from previous frame.
1578
        // Load params from previous frame.
1579
    }
1580
1581
3010
    if (current->use_ref_frame_mvs) {
1582
        // Perform motion field estimation process.
1583
    }
1584
1585
3010
    CHECK(FUNC(tile_info)(ctx, rw, current));
1586
1587
3010
    CHECK(FUNC(quantization_params)(ctx, rw, current));
1588
1589
3010
    CHECK(FUNC(segmentation_params)(ctx, rw, current));
1590
1591
3010
    CHECK(FUNC(delta_q_params)(ctx, rw, current));
1592
1593
3010
    CHECK(FUNC(delta_lf_params)(ctx, rw, current));
1594
1595
    // Init coeff CDFs / load previous segments.
1596
1597
3010
    priv->coded_lossless = 1;
1598
27090
    for (i = 0; i < AV1_MAX_SEGMENTS; i++) {
1599
        int qindex;
1600
24080
        if (current->feature_enabled[i][AV1_SEG_LVL_ALT_Q]) {
1601
            qindex = (current->base_q_idx +
1602
                      current->feature_value[i][AV1_SEG_LVL_ALT_Q]);
1603
        } else {
1604
24080
            qindex = current->base_q_idx;
1605
        }
1606
24080
        qindex = av_clip_uintp2(qindex, 8);
1607
1608

24080
        if (qindex                || current->delta_q_y_dc ||
1609
            current->delta_q_u_ac || current->delta_q_u_dc ||
1610
            current->delta_q_v_ac || current->delta_q_v_dc) {
1611
24080
            priv->coded_lossless = 0;
1612
        }
1613
    }
1614
3010
    priv->all_lossless = priv->coded_lossless &&
1615
        priv->frame_width == priv->upscaled_width;
1616
1617
3010
    CHECK(FUNC(loop_filter_params)(ctx, rw, current));
1618
1619
3010
    CHECK(FUNC(cdef_params)(ctx, rw, current));
1620
1621
3010
    CHECK(FUNC(lr_params)(ctx, rw, current));
1622
1623
3010
    CHECK(FUNC(read_tx_mode)(ctx, rw, current));
1624
1625
3010
    CHECK(FUNC(frame_reference_mode)(ctx, rw, current));
1626
1627
3010
    CHECK(FUNC(skip_mode_params)(ctx, rw, current));
1628
1629

3010
    if (frame_is_intra || current->error_resilient_mode ||
1630
2566
        !seq->enable_warped_motion)
1631
444
        infer(allow_warped_motion, 0);
1632
    else
1633
2566
        flag(allow_warped_motion);
1634
1635
3010
    flag(reduced_tx_set);
1636
1637
3010
    CHECK(FUNC(global_motion_params)(ctx, rw, current));
1638
1639
3010
    CHECK(FUNC(film_grain_params)(ctx, rw, &current->film_grain, current));
1640
1641
3010
    av_log(ctx->log_ctx, AV_LOG_DEBUG, "Frame %d:  size %dx%d  "
1642
           "upscaled %d  render %dx%d  subsample %dx%d  "
1643
           "bitdepth %d  tiles %dx%d.\n", priv->order_hint,
1644
           priv->frame_width, priv->frame_height, priv->upscaled_width,
1645
           priv->render_width, priv->render_height,
1646
3010
           seq->color_config.subsampling_x + 1,
1647
3010
           seq->color_config.subsampling_y + 1, priv->bit_depth,
1648
           priv->tile_rows, priv->tile_cols);
1649
1650
3402
update_refs:
1651
30618
    for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
1652
27216
        if (current->refresh_frame_flags & (1 << i)) {
1653
6014
            priv->ref[i] = (AV1ReferenceFrameState) {
1654
                .valid          = 1,
1655
6014
                .frame_id       = current->current_frame_id,
1656
6014
                .upscaled_width = priv->upscaled_width,
1657
6014
                .frame_width    = priv->frame_width,
1658
6014
                .frame_height   = priv->frame_height,
1659
6014
                .render_width   = priv->render_width,
1660
6014
                .render_height  = priv->render_height,
1661
6014
                .frame_type     = current->frame_type,
1662
6014
                .subsampling_x  = seq->color_config.subsampling_x,
1663
6014
                .subsampling_y  = seq->color_config.subsampling_y,
1664
6014
                .bit_depth      = priv->bit_depth,
1665
6014
                .order_hint     = priv->order_hint,
1666
            };
1667
6014
            memcpy(priv->ref[i].loop_filter_ref_deltas, current->loop_filter_ref_deltas,
1668
                   sizeof(current->loop_filter_ref_deltas));
1669
6014
            memcpy(priv->ref[i].loop_filter_mode_deltas, current->loop_filter_mode_deltas,
1670
                   sizeof(current->loop_filter_mode_deltas));
1671
6014
            memcpy(priv->ref[i].feature_enabled, current->feature_enabled,
1672
                   sizeof(current->feature_enabled));
1673
6014
            memcpy(priv->ref[i].feature_value, current->feature_value,
1674
                   sizeof(current->feature_value));
1675
        }
1676
    }
1677
1678
3402
    return 0;
1679
}
1680
1681
3402
static int FUNC(frame_header_obu)(CodedBitstreamContext *ctx, RWContext *rw,
1682
                                  AV1RawFrameHeader *current, int redundant,
1683
                                  AVBufferRef *rw_buffer_ref)
1684
{
1685
3402
    CodedBitstreamAV1Context *priv = ctx->priv_data;
1686
    int start_pos, fh_bits, fh_bytes, err;
1687
    uint8_t *fh_start;
1688
1689
3402
    if (priv->seen_frame_header) {
1690
        if (!redundant) {
1691
            av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid repeated "
1692
                   "frame header OBU.\n");
1693
            return AVERROR_INVALIDDATA;
1694
        } else {
1695
            GetBitContext fh;
1696
            size_t i, b;
1697
            uint32_t val;
1698
1699
            HEADER("Redundant Frame Header");
1700
1701
            av_assert0(priv->frame_header_ref && priv->frame_header);
1702
1703
            init_get_bits(&fh, priv->frame_header,
1704
                          priv->frame_header_size);
1705
            for (i = 0; i < priv->frame_header_size; i += 8) {
1706
                b = FFMIN(priv->frame_header_size - i, 8);
1707
                val = get_bits(&fh, b);
1708
                xf(b, frame_header_copy[i],
1709
                   val, val, val, 1, i / 8);
1710
            }
1711
        }
1712
    } else {
1713
3402
        if (redundant)
1714
            HEADER("Redundant Frame Header (used as Frame Header)");
1715
        else
1716
3402
            HEADER("Frame Header");
1717
1718
#ifdef READ
1719
2560
        start_pos = get_bits_count(rw);
1720
#else
1721
842
        start_pos = put_bits_count(rw);
1722
#endif
1723
1724
3402
        CHECK(FUNC(uncompressed_header)(ctx, rw, current));
1725
1726
3402
        priv->tile_num = 0;
1727
1728
3402
        if (current->show_existing_frame) {
1729
392
            priv->seen_frame_header = 0;
1730
        } else {
1731
3010
            priv->seen_frame_header = 1;
1732
1733
3010
            av_buffer_unref(&priv->frame_header_ref);
1734
1735
#ifdef READ
1736
2262
            fh_bits  = get_bits_count(rw) - start_pos;
1737
2262
            fh_start = (uint8_t*)rw->buffer + start_pos / 8;
1738
#else
1739
            // Need to flush the bitwriter so that we can copy its output,
1740
            // but use a copy so we don't affect the caller's structure.
1741
            {
1742
748
                PutBitContext tmp = *rw;
1743
748
                flush_put_bits(&tmp);
1744
            }
1745
1746
748
            fh_bits  = put_bits_count(rw) - start_pos;
1747
748
            fh_start = rw->buf + start_pos / 8;
1748
#endif
1749
3010
            fh_bytes = (fh_bits + 7) / 8;
1750
1751
3010
            priv->frame_header_size = fh_bits;
1752
1753
3010
            if (rw_buffer_ref) {
1754
2262
                priv->frame_header_ref = av_buffer_ref(rw_buffer_ref);
1755
2262
                if (!priv->frame_header_ref)
1756
                    return AVERROR(ENOMEM);
1757
2262
                priv->frame_header = fh_start;
1758
            } else {
1759
748
                priv->frame_header_ref =
1760
748
                    av_buffer_alloc(fh_bytes + AV_INPUT_BUFFER_PADDING_SIZE);
1761
748
                if (!priv->frame_header_ref)
1762
                    return AVERROR(ENOMEM);
1763
748
                priv->frame_header = priv->frame_header_ref->data;
1764
748
                memcpy(priv->frame_header, fh_start, fh_bytes);
1765
            }
1766
        }
1767
    }
1768
1769
3402
    return 0;
1770
}
1771
1772
3522
static int FUNC(tile_group_obu)(CodedBitstreamContext *ctx, RWContext *rw,
1773
                                AV1RawTileGroup *current)
1774
{
1775
3522
    CodedBitstreamAV1Context *priv = ctx->priv_data;
1776
    int num_tiles, tile_bits;
1777
    int err;
1778
1779
3522
    HEADER("Tile Group");
1780
1781
3522
    num_tiles = priv->tile_cols * priv->tile_rows;
1782
3522
    if (num_tiles > 1)
1783
1126
        flag(tile_start_and_end_present_flag);
1784
    else
1785
2396
        infer(tile_start_and_end_present_flag, 0);
1786
1787

3522
    if (num_tiles == 1 || !current->tile_start_and_end_present_flag) {
1788
2690
        infer(tg_start, 0);
1789
2690
        infer(tg_end, num_tiles - 1);
1790
    } else {
1791
832
        tile_bits = cbs_av1_tile_log2(1, priv->tile_cols) +
1792
832
                    cbs_av1_tile_log2(1, priv->tile_rows);
1793
832
        fc(tile_bits, tg_start, priv->tile_num, num_tiles - 1);
1794
832
        fc(tile_bits, tg_end, current->tg_start, num_tiles - 1);
1795
    }
1796
1797
3522
    priv->tile_num = current->tg_end + 1;
1798
1799
3522
    CHECK(FUNC(byte_alignment)(ctx, rw));
1800
1801
    // Reset header for next frame.
1802
3522
    if (current->tg_end == num_tiles - 1)
1803
3010
        priv->seen_frame_header = 0;
1804
1805
    // Tile data follows.
1806
1807
3522
    return 0;
1808
}
1809
1810
2690
static int FUNC(frame_obu)(CodedBitstreamContext *ctx, RWContext *rw,
1811
                           AV1RawFrame *current,
1812
                           AVBufferRef *rw_buffer_ref)
1813
{
1814
    int err;
1815
1816
2690
    CHECK(FUNC(frame_header_obu)(ctx, rw, &current->header,
1817
                                 0, rw_buffer_ref));
1818
1819
2690
    CHECK(FUNC(byte_alignment)(ctx, rw));
1820
1821
2690
    CHECK(FUNC(tile_group_obu)(ctx, rw, &current->tile_group));
1822
1823
2690
    return 0;
1824
}
1825
1826
static int FUNC(tile_list_obu)(CodedBitstreamContext *ctx, RWContext *rw,
1827
                               AV1RawTileList *current)
1828
{
1829
    int err;
1830
1831
    fb(8, output_frame_width_in_tiles_minus_1);
1832
    fb(8, output_frame_height_in_tiles_minus_1);
1833
1834
    fb(16, tile_count_minus_1);
1835
1836
    // Tile data follows.
1837
1838
    return 0;
1839
}
1840
1841
32
static int FUNC(metadata_hdr_cll)(CodedBitstreamContext *ctx, RWContext *rw,
1842
                                  AV1RawMetadataHDRCLL *current)
1843
{
1844
    int err;
1845
1846
32
    fb(16, max_cll);
1847
32
    fb(16, max_fall);
1848
1849
32
    return 0;
1850
}
1851
1852
32
static int FUNC(metadata_hdr_mdcv)(CodedBitstreamContext *ctx, RWContext *rw,
1853
                                   AV1RawMetadataHDRMDCV *current)
1854
{
1855
    int err, i;
1856
1857
128
    for (i = 0; i < 3; i++) {
1858
96
        fbs(16, primary_chromaticity_x[i], 1, i);
1859
96
        fbs(16, primary_chromaticity_y[i], 1, i);
1860
    }
1861
1862
32
    fb(16, white_point_chromaticity_x);
1863
32
    fb(16, white_point_chromaticity_y);
1864
1865
32
    fc(32, luminance_max, 1, MAX_UINT_BITS(32));
1866
    // luminance_min must be lower than luminance_max. Convert luminance_max from
1867
    // 24.8 fixed point to 18.14 fixed point in order to compare them.
1868
32
    fc(32, luminance_min, 0, FFMIN(((uint64_t)current->luminance_max << 6) - 1,
1869
                                   MAX_UINT_BITS(32)));
1870
1871
32
    return 0;
1872
}
1873
1874
static int FUNC(scalability_structure)(CodedBitstreamContext *ctx, RWContext *rw,
1875
                                       AV1RawMetadataScalability *current)
1876
{
1877
    CodedBitstreamAV1Context *priv = ctx->priv_data;
1878
    const AV1RawSequenceHeader *seq;
1879
    int err, i, j;
1880
1881
    if (!priv->sequence_header) {
1882
        av_log(ctx->log_ctx, AV_LOG_ERROR, "No sequence header available: "
1883
               "unable to parse scalability metadata.\n");
1884
        return AVERROR_INVALIDDATA;
1885
    }
1886
    seq = priv->sequence_header;
1887
1888
    fb(2, spatial_layers_cnt_minus_1);
1889
    flag(spatial_layer_dimensions_present_flag);
1890
    flag(spatial_layer_description_present_flag);
1891
    flag(temporal_group_description_present_flag);
1892
    fc(3, scalability_structure_reserved_3bits, 0, 0);
1893
    if (current->spatial_layer_dimensions_present_flag) {
1894
        for (i = 0; i <= current->spatial_layers_cnt_minus_1; i++) {
1895
            fcs(16, spatial_layer_max_width[i],
1896
                0, seq->max_frame_width_minus_1 + 1, 1, i);
1897
            fcs(16, spatial_layer_max_height[i],
1898
                0, seq->max_frame_height_minus_1 + 1, 1, i);
1899
        }
1900
    }
1901
    if (current->spatial_layer_description_present_flag) {
1902
        for (i = 0; i <= current->spatial_layers_cnt_minus_1; i++)
1903
            fbs(8, spatial_layer_ref_id[i], 1, i);
1904
    }
1905
    if (current->temporal_group_description_present_flag) {
1906
        fb(8, temporal_group_size);
1907
        for (i = 0; i < current->temporal_group_size; i++) {
1908
            fbs(3, temporal_group_temporal_id[i], 1, i);
1909
            flags(temporal_group_temporal_switching_up_point_flag[i], 1, i);
1910
            flags(temporal_group_spatial_switching_up_point_flag[i], 1, i);
1911
            fbs(3, temporal_group_ref_cnt[i], 1, i);
1912
            for (j = 0; j < current->temporal_group_ref_cnt[i]; j++) {
1913
                fbs(8, temporal_group_ref_pic_diff[i][j], 2, i, j);
1914
            }
1915
        }
1916
    }
1917
1918
    return 0;
1919
}
1920
1921
static int FUNC(metadata_scalability)(CodedBitstreamContext *ctx, RWContext *rw,
1922
                                      AV1RawMetadataScalability *current)
1923
{
1924
    int err;
1925
1926
    fb(8, scalability_mode_idc);
1927
1928
    if (current->scalability_mode_idc == AV1_SCALABILITY_SS)
1929
        CHECK(FUNC(scalability_structure)(ctx, rw, current));
1930
1931
    return 0;
1932
}
1933
1934
static int FUNC(metadata_itut_t35)(CodedBitstreamContext *ctx, RWContext *rw,
1935
                                   AV1RawMetadataITUTT35 *current)
1936
{
1937
    int err;
1938
    size_t i;
1939
1940
    fb(8, itu_t_t35_country_code);
1941
    if (current->itu_t_t35_country_code == 0xff)
1942
        fb(8, itu_t_t35_country_code_extension_byte);
1943
1944
#ifdef READ
1945
    // The payload runs up to the start of the trailing bits, but there might
1946
    // be arbitrarily many trailing zeroes so we need to read through twice.
1947
    current->payload_size = cbs_av1_get_payload_bytes_left(rw);
1948
1949
    current->payload_ref = av_buffer_alloc(current->payload_size);
1950
    if (!current->payload_ref)
1951
        return AVERROR(ENOMEM);
1952
    current->payload = current->payload_ref->data;
1953
#endif
1954
1955
    for (i = 0; i < current->payload_size; i++)
1956
        xf(8, itu_t_t35_payload_bytes[i], current->payload[i],
1957
           0x00, 0xff, 1, i);
1958
1959
    return 0;
1960
}
1961
1962
static int FUNC(metadata_timecode)(CodedBitstreamContext *ctx, RWContext *rw,
1963
                                   AV1RawMetadataTimecode *current)
1964
{
1965
    int err;
1966
1967
    fb(5, counting_type);
1968
    flag(full_timestamp_flag);
1969
    flag(discontinuity_flag);
1970
    flag(cnt_dropped_flag);
1971
    fb(9, n_frames);
1972
1973
    if (current->full_timestamp_flag) {
1974
        fc(6, seconds_value, 0, 59);
1975
        fc(6, minutes_value, 0, 59);
1976
        fc(5, hours_value,   0, 23);
1977
    } else {
1978
        flag(seconds_flag);
1979
        if (current->seconds_flag) {
1980
            fc(6, seconds_value, 0, 59);
1981
            flag(minutes_flag);
1982
            if (current->minutes_flag) {
1983
                fc(6, minutes_value, 0, 59);
1984
                flag(hours_flag);
1985
                if (current->hours_flag)
1986
                    fc(5, hours_value, 0, 23);
1987
            }
1988
        }
1989
    }
1990
1991
    fb(5, time_offset_length);
1992
    if (current->time_offset_length > 0)
1993
        fb(current->time_offset_length, time_offset_value);
1994
    else
1995
        infer(time_offset_length, 0);
1996
1997
    return 0;
1998
}
1999
2000
64
static int FUNC(metadata_obu)(CodedBitstreamContext *ctx, RWContext *rw,
2001
                              AV1RawMetadata *current)
2002
{
2003
    int err;
2004
2005
64
    leb128(metadata_type);
2006
2007

64
    switch (current->metadata_type) {
2008
32
    case AV1_METADATA_TYPE_HDR_CLL:
2009
32
        CHECK(FUNC(metadata_hdr_cll)(ctx, rw, &current->metadata.hdr_cll));
2010
32
        break;
2011
32
    case AV1_METADATA_TYPE_HDR_MDCV:
2012
32
        CHECK(FUNC(metadata_hdr_mdcv)(ctx, rw, &current->metadata.hdr_mdcv));
2013
32
        break;
2014
    case AV1_METADATA_TYPE_SCALABILITY:
2015
        CHECK(FUNC(metadata_scalability)(ctx, rw, &current->metadata.scalability));
2016
        break;
2017
    case AV1_METADATA_TYPE_ITUT_T35:
2018
        CHECK(FUNC(metadata_itut_t35)(ctx, rw, &current->metadata.itut_t35));
2019
        break;
2020
    case AV1_METADATA_TYPE_TIMECODE:
2021
        CHECK(FUNC(metadata_timecode)(ctx, rw, &current->metadata.timecode));
2022
        break;
2023
    default:
2024
        // Unknown metadata type.
2025
        return AVERROR_PATCHWELCOME;
2026
    }
2027
2028
64
    return 0;
2029
}
2030
2031
static int FUNC(padding_obu)(CodedBitstreamContext *ctx, RWContext *rw,
2032
                             AV1RawPadding *current)
2033
{
2034
    int i, err;
2035
2036
    HEADER("Padding");
2037
2038
#ifdef READ
2039
    // The payload runs up to the start of the trailing bits, but there might
2040
    // be arbitrarily many trailing zeroes so we need to read through twice.
2041
    current->payload_size = cbs_av1_get_payload_bytes_left(rw);
2042
2043
    current->payload_ref = av_buffer_alloc(current->payload_size);
2044
    if (!current->payload_ref)
2045
        return AVERROR(ENOMEM);
2046
    current->payload = current->payload_ref->data;
2047
#endif
2048
2049
    for (i = 0; i < current->payload_size; i++)
2050
        xf(8, obu_padding_byte[i], current->payload[i], 0x00, 0xff, 1, i);
2051
2052
    return 0;
2053
}