2 * This file is part of Libav.
4 * Libav 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.
9 * Libav 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.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with Libav; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 static int FUNC(rbsp_trailing_bits)(CodedBitstreamContext *ctx, RWContext *rw)
22 av_unused int one = 1, zero = 0;
23 xu(1, rbsp_stop_one_bit, one, 1, 1);
24 while (byte_alignment(rw) != 0)
25 xu(1, rbsp_alignment_zero_bit, zero, 0, 0);
30 static int FUNC(nal_unit_header)(CodedBitstreamContext *ctx, RWContext *rw,
31 H264RawNALUnitHeader *current,
32 uint32_t valid_type_mask)
36 u(1, forbidden_zero_bit, 0, 0);
37 u(2, nal_ref_idc, 0, 3);
38 u(5, nal_unit_type, 0, 31);
40 if (!(1 << current->nal_unit_type & valid_type_mask)) {
41 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid NAL unit type %d.\n",
42 current->nal_unit_type);
43 return AVERROR_INVALIDDATA;
46 if (current->nal_unit_type == 14 ||
47 current->nal_unit_type == 20 ||
48 current->nal_unit_type == 21) {
49 if (current->nal_unit_type != 21)
50 flag(svc_extension_flag);
52 flag(avc_3d_extension_flag);
54 if (current->svc_extension_flag) {
55 av_log(ctx->log_ctx, AV_LOG_ERROR, "SVC not supported.\n");
56 return AVERROR_PATCHWELCOME;
58 } else if (current->avc_3d_extension_flag) {
59 av_log(ctx->log_ctx, AV_LOG_ERROR, "3DAVC not supported.\n");
60 return AVERROR_PATCHWELCOME;
63 av_log(ctx->log_ctx, AV_LOG_ERROR, "MVC not supported.\n");
64 return AVERROR_PATCHWELCOME;
71 static int FUNC(scaling_list)(CodedBitstreamContext *ctx, RWContext *rw,
72 H264RawScalingList *current,
73 int size_of_scaling_list)
78 for (i = 0; i < size_of_scaling_list; i++) {
79 xse(delta_scale, current->delta_scale[i], -128, +127);
80 scale = (scale + current->delta_scale[i] + 256) % 256;
88 static int FUNC(hrd_parameters)(CodedBitstreamContext *ctx, RWContext *rw,
93 ue(cpb_cnt_minus1, 0, 31);
94 u(4, bit_rate_scale, 0, 15);
95 u(4, cpb_size_scale, 0, 15);
97 for (i = 0; i <= current->cpb_cnt_minus1; i++) {
98 ue(bit_rate_value_minus1[i], 0, UINT32_MAX - 1);
99 ue(cpb_size_value_minus1[i], 0, UINT32_MAX - 1);
103 u(5, initial_cpb_removal_delay_length_minus1, 0, 31);
104 u(5, cpb_removal_delay_length_minus1, 0, 31);
105 u(5, dpb_output_delay_length_minus1, 0, 31);
106 u(5, time_offset_length, 0, 31);
111 static int FUNC(vui_parameters)(CodedBitstreamContext *ctx, RWContext *rw,
112 H264RawVUI *current, H264RawSPS *sps)
116 flag(aspect_ratio_info_present_flag);
117 if (current->aspect_ratio_info_present_flag) {
118 u(8, aspect_ratio_idc, 0, 255);
119 if (current->aspect_ratio_idc == 255) {
120 u(16, sar_width, 0, 65535);
121 u(16, sar_height, 0, 65535);
124 infer(aspect_ratio_idc, 0);
127 flag(overscan_info_present_flag);
128 if (current->overscan_info_present_flag)
129 flag(overscan_appropriate_flag);
131 flag(video_signal_type_present_flag);
132 if (current->video_signal_type_present_flag) {
133 u(3, video_format, 0, 7);
134 flag(video_full_range_flag);
135 flag(colour_description_present_flag);
136 if (current->colour_description_present_flag) {
137 u(8, colour_primaries, 0, 255);
138 u(8, transfer_characteristics, 0, 255);
139 u(8, matrix_coefficients, 0, 255);
142 infer(video_format, 5);
143 infer(video_full_range_flag, 0);
144 infer(colour_primaries, 2);
145 infer(transfer_characteristics, 2);
146 infer(matrix_coefficients, 2);
149 flag(chroma_loc_info_present_flag);
150 if (current->chroma_loc_info_present_flag) {
151 ue(chroma_sample_loc_type_top_field, 0, 5);
152 ue(chroma_sample_loc_type_bottom_field, 0, 5);
154 infer(chroma_sample_loc_type_top_field, 0);
155 infer(chroma_sample_loc_type_bottom_field, 0);
158 flag(timing_info_present_flag);
159 if (current->timing_info_present_flag) {
160 u(32, num_units_in_tick, 1, UINT32_MAX);
161 u(32, time_scale, 1, UINT32_MAX);
162 flag(fixed_frame_rate_flag);
164 infer(fixed_frame_rate_flag, 0);
167 flag(nal_hrd_parameters_present_flag);
168 if (current->nal_hrd_parameters_present_flag)
169 CHECK(FUNC(hrd_parameters)(ctx, rw, ¤t->nal_hrd_parameters));
171 flag(vcl_hrd_parameters_present_flag);
172 if (current->vcl_hrd_parameters_present_flag)
173 CHECK(FUNC(hrd_parameters)(ctx, rw, ¤t->vcl_hrd_parameters));
175 if (current->nal_hrd_parameters_present_flag ||
176 current->vcl_hrd_parameters_present_flag)
177 flag(low_delay_hrd_flag);
179 infer(low_delay_hrd_flag, 1 - current->fixed_frame_rate_flag);
181 flag(pic_struct_present_flag);
183 flag(bitstream_restriction_flag);
184 if (current->bitstream_restriction_flag) {
185 flag(motion_vectors_over_pic_boundaries_flag);
186 ue(max_bytes_per_pic_denom, 0, 16);
187 ue(max_bits_per_mb_denom, 0, 16);
188 ue(log2_max_mv_length_horizontal, 0, 16);
189 ue(log2_max_mv_length_vertical, 0, 16);
190 ue(max_num_reorder_frames, 0, H264_MAX_DPB_FRAMES);
191 ue(max_dec_frame_buffering, 0, H264_MAX_DPB_FRAMES);
193 infer(motion_vectors_over_pic_boundaries_flag, 1);
194 infer(max_bytes_per_pic_denom, 2);
195 infer(max_bits_per_mb_denom, 1);
196 infer(log2_max_mv_length_horizontal, 16);
197 infer(log2_max_mv_length_vertical, 16);
199 if ((sps->profile_idc == 44 || sps->profile_idc == 86 ||
200 sps->profile_idc == 110 || sps->profile_idc == 110 ||
201 sps->profile_idc == 122 || sps->profile_idc == 244) &&
202 sps->constraint_set3_flag) {
203 infer(max_num_reorder_frames, 0);
204 infer(max_dec_frame_buffering, 0);
206 infer(max_num_reorder_frames, H264_MAX_DPB_FRAMES);
207 infer(max_dec_frame_buffering, H264_MAX_DPB_FRAMES);
214 static int FUNC(sps)(CodedBitstreamContext *ctx, RWContext *rw,
219 HEADER("Sequence Parameter Set");
221 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header,
224 u(8, profile_idc, 0, 255);
226 flag(constraint_set0_flag);
227 flag(constraint_set1_flag);
228 flag(constraint_set2_flag);
229 flag(constraint_set3_flag);
230 flag(constraint_set4_flag);
231 flag(constraint_set5_flag);
233 u(2, reserved_zero_2bits, 0, 0);
235 u(8, level_idc, 0, 255);
237 ue(seq_parameter_set_id, 0, 31);
239 if (current->profile_idc == 100 || current->profile_idc == 110 ||
240 current->profile_idc == 122 || current->profile_idc == 244 ||
241 current->profile_idc == 44 || current->profile_idc == 83 ||
242 current->profile_idc == 86 || current->profile_idc == 118 ||
243 current->profile_idc == 128 || current->profile_idc == 138) {
244 ue(chroma_format_idc, 0, 3);
246 if (current->chroma_format_idc == 3)
247 flag(separate_colour_plane_flag);
249 infer(separate_colour_plane_flag, 0);
251 ue(bit_depth_luma_minus8, 0, 6);
252 ue(bit_depth_chroma_minus8, 0, 6);
254 flag(qpprime_y_zero_transform_bypass_flag);
256 flag(seq_scaling_matrix_present_flag);
257 if (current->seq_scaling_matrix_present_flag) {
258 for (i = 0; i < ((current->chroma_format_idc != 3) ? 8 : 12); i++) {
259 flag(seq_scaling_list_present_flag[i]);
260 if (current->seq_scaling_list_present_flag[i]) {
262 CHECK(FUNC(scaling_list)(ctx, rw,
263 ¤t->scaling_list_4x4[i],
266 CHECK(FUNC(scaling_list)(ctx, rw,
267 ¤t->scaling_list_8x8[i - 6],
273 infer(chroma_format_idc, current->profile_idc == 183 ? 0 : 1);
275 infer(separate_colour_plane_flag, 0);
276 infer(bit_depth_luma_minus8, 0);
277 infer(bit_depth_chroma_minus8, 0);
280 ue(log2_max_frame_num_minus4, 0, 12);
281 ue(pic_order_cnt_type, 0, 2);
283 if (current->pic_order_cnt_type == 0) {
284 ue(log2_max_pic_order_cnt_lsb_minus4, 0, 12);
285 } else if (current->pic_order_cnt_type == 1) {
286 flag(delta_pic_order_always_zero_flag);
287 se(offset_for_non_ref_pic, INT32_MIN + 1, INT32_MAX);
288 se(offset_for_top_to_bottom_field, INT32_MIN + 1, INT32_MAX);
289 ue(num_ref_frames_in_pic_order_cnt_cycle, 0, 255);
291 for (i = 0; i < current->num_ref_frames_in_pic_order_cnt_cycle; i++)
292 se(offset_for_ref_frame[i], INT32_MIN + 1, INT32_MAX);
295 ue(max_num_ref_frames, 0, H264_MAX_DPB_FRAMES);
296 flag(gaps_in_frame_num_allowed_flag);
298 ue(pic_width_in_mbs_minus1, 0, H264_MAX_MB_WIDTH);
299 ue(pic_height_in_map_units_minus1, 0, H264_MAX_MB_HEIGHT);
301 flag(frame_mbs_only_flag);
302 if (!current->frame_mbs_only_flag)
303 flag(mb_adaptive_frame_field_flag);
305 flag(direct_8x8_inference_flag);
307 flag(frame_cropping_flag);
308 if (current->frame_cropping_flag) {
309 ue(frame_crop_left_offset, 0, H264_MAX_WIDTH);
310 ue(frame_crop_right_offset, 0, H264_MAX_WIDTH);
311 ue(frame_crop_top_offset, 0, H264_MAX_HEIGHT);
312 ue(frame_crop_bottom_offset, 0, H264_MAX_HEIGHT);
315 flag(vui_parameters_present_flag);
316 if (current->vui_parameters_present_flag)
317 CHECK(FUNC(vui_parameters)(ctx, rw, ¤t->vui, current));
319 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
324 static int FUNC(sps_extension)(CodedBitstreamContext *ctx, RWContext *rw,
325 H264RawSPSExtension *current)
329 HEADER("Sequence Parameter Set Extension");
331 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header,
332 1 << H264_NAL_SPS_EXT));
334 ue(seq_parameter_set_id, 0, 31);
336 ue(aux_format_idc, 0, 3);
338 if (current->aux_format_idc != 0) {
341 ue(bit_depth_aux_minus8, 0, 4);
342 flag(alpha_incr_flag);
344 bits = current->bit_depth_aux_minus8 + 9;
345 u(bits, alpha_opaque_value, 0, (1 << bits) - 1);
346 u(bits, alpha_transparent_value, 0, (1 << bits) - 1);
349 flag(additional_extension_flag);
351 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
356 static int FUNC(pps)(CodedBitstreamContext *ctx, RWContext *rw,
359 CodedBitstreamH264Context *h264 = ctx->priv_data;
360 const H264RawSPS *sps;
363 HEADER("Picture Parameter Set");
365 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header,
368 ue(pic_parameter_set_id, 0, 255);
369 ue(seq_parameter_set_id, 0, 31);
371 sps = h264->sps[current->seq_parameter_set_id];
373 av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
374 current->seq_parameter_set_id);
375 return AVERROR_INVALIDDATA;
378 flag(entropy_coding_mode_flag);
379 flag(bottom_field_pic_order_in_frame_present_flag);
381 ue(num_slice_groups_minus1, 0, 7);
382 if (current->num_slice_groups_minus1 > 0) {
383 unsigned int pic_size;
386 pic_size = (sps->pic_width_in_mbs_minus1 + 1) *
387 (sps->pic_height_in_map_units_minus1 + 1);
389 ue(slice_group_map_type, 0, 6);
391 if (current->slice_group_map_type == 0) {
392 for (iGroup = 0; iGroup <= current->num_slice_groups_minus1; iGroup++)
393 ue(run_length_minus1[iGroup], 0, pic_size - 1);
395 } else if (current->slice_group_map_type == 2) {
396 for (iGroup = 0; iGroup < current->num_slice_groups_minus1; iGroup++) {
397 ue(top_left[iGroup], 0, pic_size - 1);
398 ue(bottom_right[iGroup], current->top_left[iGroup], pic_size - 1);
400 } else if (current->slice_group_map_type == 3 ||
401 current->slice_group_map_type == 4 ||
402 current->slice_group_map_type == 5) {
403 flag(slice_group_change_direction_flag);
404 ue(slice_group_change_rate_minus1, 0, pic_size - 1);
405 } else if (current->slice_group_map_type == 6) {
406 ue(pic_size_in_map_units_minus1, pic_size - 1, pic_size - 1);
407 for (i = 0; i <= current->pic_size_in_map_units_minus1; i++)
408 u(av_log2(2 * current->num_slice_groups_minus1 + 1),
409 slice_group_id[i], 0, current->num_slice_groups_minus1);
413 ue(num_ref_idx_l0_default_active_minus1, 0, 31);
414 ue(num_ref_idx_l1_default_active_minus1, 0, 31);
416 flag(weighted_pred_flag);
417 u(2, weighted_bipred_idc, 0, 2);
419 se(pic_init_qp_minus26, -26 - 6 * sps->bit_depth_luma_minus8, +25);
420 se(pic_init_qs_minus26, -26, +25);
421 se(chroma_qp_index_offset, -12, +12);
423 flag(deblocking_filter_control_present_flag);
424 flag(constrained_intra_pred_flag);
425 flag(redundant_pic_cnt_present_flag);
427 if (more_rbsp_data(current->more_rbsp_data))
429 flag(transform_8x8_mode_flag);
431 flag(pic_scaling_matrix_present_flag);
432 if (current->pic_scaling_matrix_present_flag) {
433 for (i = 0; i < 6 + (((sps->chroma_format_idc != 3) ? 2 : 6) *
434 current->transform_8x8_mode_flag); i++) {
435 flag(pic_scaling_list_present_flag[i]);
436 if (current->pic_scaling_list_present_flag[i]) {
438 CHECK(FUNC(scaling_list)(ctx, rw,
439 ¤t->scaling_list_4x4[i],
442 CHECK(FUNC(scaling_list)(ctx, rw,
443 ¤t->scaling_list_8x8[i - 6],
449 se(second_chroma_qp_index_offset, -12, +12);
451 infer(transform_8x8_mode_flag, 0);
452 infer(pic_scaling_matrix_present_flag, 0);
453 infer(second_chroma_qp_index_offset, current->chroma_qp_index_offset);
456 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
461 static int FUNC(sei_buffering_period)(CodedBitstreamContext *ctx, RWContext *rw,
462 H264RawSEIBufferingPeriod *current)
464 CodedBitstreamH264Context *h264 = ctx->priv_data;
465 const H264RawSPS *sps;
468 ue(seq_parameter_set_id, 0, 31);
470 sps = h264->sps[current->seq_parameter_set_id];
472 av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
473 current->seq_parameter_set_id);
474 return AVERROR_INVALIDDATA;
476 h264->active_sps = sps;
478 if (sps->vui.nal_hrd_parameters_present_flag) {
479 for (i = 0; i <= sps->vui.nal_hrd_parameters.cpb_cnt_minus1; i++) {
480 length = sps->vui.nal_hrd_parameters.initial_cpb_removal_delay_length_minus1 + 1;
481 xu(length, initial_cpb_removal_delay[SchedSelIdx],
482 current->nal.initial_cpb_removal_delay[i],
483 0, (1 << (uint64_t)length) - 1);
484 xu(length, initial_cpb_removal_delay_offset[SchedSelIdx],
485 current->nal.initial_cpb_removal_delay_offset[i],
486 0, (1 << (uint64_t)length) - 1);
490 if (sps->vui.vcl_hrd_parameters_present_flag) {
491 for (i = 0; i <= sps->vui.vcl_hrd_parameters.cpb_cnt_minus1; i++) {
492 length = sps->vui.vcl_hrd_parameters.initial_cpb_removal_delay_length_minus1 + 1;
493 xu(length, initial_cpb_removal_delay[SchedSelIdx],
494 current->vcl.initial_cpb_removal_delay[i],
495 0, (1 << (uint64_t)length) - 1);
496 xu(length, initial_cpb_removal_delay_offset[SchedSelIdx],
497 current->vcl.initial_cpb_removal_delay_offset[i],
498 0, (1 << (uint64_t)length) - 1);
505 static int FUNC(sei_pic_timestamp)(CodedBitstreamContext *ctx, RWContext *rw,
506 H264RawSEIPicTimestamp *current)
508 CodedBitstreamH264Context *h264 = ctx->priv_data;
509 const H264RawSPS *sps;
510 uint8_t time_offset_length;
514 flag(nuit_field_based_flag);
515 u(5, counting_type, 0, 6);
516 flag(full_timestamp_flag);
517 flag(discontinuity_flag);
518 flag(cnt_dropped_flag);
519 u(8, n_frames, 0, 255);
520 if (current->full_timestamp_flag) {
521 u(6, seconds_value, 0, 59);
522 u(6, minutes_value, 0, 59);
523 u(5, hours_value, 0, 23);
526 if (current->seconds_flag) {
527 u(6, seconds_value, 0, 59);
529 if (current->minutes_flag) {
530 u(6, minutes_value, 0, 59);
532 if (current->hours_flag)
533 u(5, hours_value, 0, 23);
538 sps = h264->active_sps;
539 if (sps->vui.nal_hrd_parameters_present_flag)
540 time_offset_length = sps->vui.nal_hrd_parameters.time_offset_length;
541 else if (sps->vui.vcl_hrd_parameters_present_flag)
542 time_offset_length = sps->vui.vcl_hrd_parameters.time_offset_length;
544 time_offset_length = 24;
546 if (time_offset_length > 0)
547 u(time_offset_length, time_offset,
548 0, (1 << (uint64_t)time_offset_length) - 1);
550 infer(time_offset, 0);
555 static int FUNC(sei_pic_timing)(CodedBitstreamContext *ctx, RWContext *rw,
556 H264RawSEIPicTiming *current)
558 CodedBitstreamH264Context *h264 = ctx->priv_data;
559 const H264RawSPS *sps;
562 sps = h264->active_sps;
564 // If there is exactly one possible SPS but it is not yet active
565 // then just assume that it should be the active one.
567 for (i = 0; i < H264_MAX_SPS_COUNT; i++) {
580 av_log(ctx->log_ctx, AV_LOG_ERROR,
581 "No active SPS for pic_timing.\n");
582 return AVERROR_INVALIDDATA;
585 if (sps->vui.nal_hrd_parameters_present_flag ||
586 sps->vui.vcl_hrd_parameters_present_flag) {
587 const H264RawHRD *hrd;
589 if (sps->vui.nal_hrd_parameters_present_flag)
590 hrd = &sps->vui.nal_hrd_parameters;
591 else if (sps->vui.vcl_hrd_parameters_present_flag)
592 hrd = &sps->vui.vcl_hrd_parameters;
594 av_log(ctx->log_ctx, AV_LOG_ERROR,
595 "No HRD parameters for pic_timing.\n");
596 return AVERROR_INVALIDDATA;
599 u(hrd->cpb_removal_delay_length_minus1 + 1, cpb_removal_delay,
600 0, (1 << (uint64_t)hrd->cpb_removal_delay_length_minus1) + 1);
601 u(hrd->dpb_output_delay_length_minus1 + 1, dpb_output_delay,
602 0, (1 << (uint64_t)hrd->dpb_output_delay_length_minus1) + 1);
605 if (sps->vui.pic_struct_present_flag) {
606 static const int num_clock_ts[9] = {
607 1, 1, 1, 2, 2, 3, 3, 2, 3
611 u(4, pic_struct, 0, 8);
612 if (current->pic_struct > 8)
613 return AVERROR_INVALIDDATA;
615 for (i = 0; i < num_clock_ts[current->pic_struct]; i++) {
616 flag(clock_timestamp_flag[i]);
617 if (current->clock_timestamp_flag[i])
618 CHECK(FUNC(sei_pic_timestamp)(ctx, rw, ¤t->timestamp[i]));
625 static int FUNC(sei_user_data_registered)(CodedBitstreamContext *ctx, RWContext *rw,
626 H264RawSEIUserDataRegistered *current,
627 uint32_t *payload_size)
631 u(8, itu_t_t35_country_code, 0x00, 0xff);
632 if (current->itu_t_t35_country_code != 0xff)
635 u(8, itu_t_t35_country_code_extension_byte, 0x00, 0xff);
640 if (*payload_size < i) {
641 av_log(ctx->log_ctx, AV_LOG_ERROR,
642 "Invalid SEI user data registered payload.\n");
643 return AVERROR_INVALIDDATA;
645 current->data_length = *payload_size - i;
647 *payload_size = i + current->data_length;
650 allocate(current->data, current->data_length);
651 for (j = 0; j < current->data_length; j++)
652 xu(8, itu_t_t35_payload_byte, current->data[j], 0x00, 0xff);
657 static int FUNC(sei_user_data_unregistered)(CodedBitstreamContext *ctx, RWContext *rw,
658 H264RawSEIUserDataUnregistered *current,
659 uint32_t *payload_size)
664 if (*payload_size < 16) {
665 av_log(ctx->log_ctx, AV_LOG_ERROR,
666 "Invalid SEI user data unregistered payload.\n");
667 return AVERROR_INVALIDDATA;
669 current->data_length = *payload_size - 16;
671 *payload_size = 16 + current->data_length;
674 for (i = 0; i < 16; i++) {
675 xu(8, uuid_iso_iec_11578,
676 current->uuid_iso_iec_11578[i], 0x00, 0xff);
679 allocate(current->data, current->data_length);
681 for (i = 0; i < current->data_length; i++)
682 xu(8, user_data_payload_byte, current->data[i], 0x00, 0xff);
687 static int FUNC(sei_recovery_point)(CodedBitstreamContext *ctx, RWContext *rw,
688 H264RawSEIRecoveryPoint *current)
692 ue(recovery_frame_cnt, 0, 65535);
693 flag(exact_match_flag);
694 flag(broken_link_flag);
695 u(2, changing_slice_group_idc, 0, 2);
700 static int FUNC(sei_display_orientation)(CodedBitstreamContext *ctx, RWContext *rw,
701 H264RawSEIDisplayOrientation *current)
705 flag(display_orientation_cancel_flag);
706 if (!current->display_orientation_cancel_flag) {
709 u(16, anticlockwise_rotation, 0, 65535);
710 ue(display_orientation_repetition_period, 0, 16384);
711 flag(display_orientation_extension_flag);
717 static int FUNC(sei_payload)(CodedBitstreamContext *ctx, RWContext *rw,
718 H264RawSEIPayload *current)
721 int start_position, end_position;
724 start_position = bitstream_tell(rw);
726 start_position = put_bits_count(rw);
729 switch (current->payload_type) {
730 case H264_SEI_TYPE_BUFFERING_PERIOD:
731 CHECK(FUNC(sei_buffering_period)
732 (ctx, rw, ¤t->payload.buffering_period));
734 case H264_SEI_TYPE_PIC_TIMING:
735 CHECK(FUNC(sei_pic_timing)
736 (ctx, rw, ¤t->payload.pic_timing));
738 case H264_SEI_TYPE_FILLER_PAYLOAD:
740 av_unused int ff_byte = 0xff;
741 for (i = 0; i < current->payload_size; i++)
742 xu(8, ff_byte, ff_byte, 0xff, 0xff);
745 case H264_SEI_TYPE_USER_DATA_REGISTERED:
746 CHECK(FUNC(sei_user_data_registered)
747 (ctx, rw, ¤t->payload.user_data_registered, ¤t->payload_size));
749 case H264_SEI_TYPE_USER_DATA_UNREGISTERED:
750 CHECK(FUNC(sei_user_data_unregistered)
751 (ctx, rw, ¤t->payload.user_data_unregistered, ¤t->payload_size));
753 case H264_SEI_TYPE_RECOVERY_POINT:
754 CHECK(FUNC(sei_recovery_point)
755 (ctx, rw, ¤t->payload.recovery_point));
757 case H264_SEI_TYPE_DISPLAY_ORIENTATION:
758 CHECK(FUNC(sei_display_orientation)
759 (ctx, rw, ¤t->payload.display_orientation));
763 allocate(current->payload.other.data, current->payload_size);
764 for (i = 0; i < current->payload_size; i++)
765 xu(8, payload_byte, current->payload.other.data[i], 0, 255);
769 if (byte_alignment(rw)) {
770 av_unused int one = 1, zero = 0;
771 xu(1, bit_equal_to_one, one, 1, 1);
772 while (byte_alignment(rw))
773 xu(1, bit_equal_to_zero, zero, 0, 0);
777 end_position = bitstream_tell(rw);
778 if (end_position < start_position + 8 * current->payload_size) {
779 av_log(ctx->log_ctx, AV_LOG_ERROR, "Incorrect SEI payload length: "
780 "header %d bits, actually %d bits.\n",
781 8 * current->payload_size,
782 end_position - start_position);
783 return AVERROR_INVALIDDATA;
786 end_position = put_bits_count(rw);
787 current->payload_size = (end_position - start_position) / 8;
793 static int FUNC(sei)(CodedBitstreamContext *ctx, RWContext *rw,
798 HEADER("Supplemental Enhancement Information");
800 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header,
804 for (k = 0; k < H264_MAX_SEI_PAYLOADS; k++) {
805 uint32_t payload_type = 0;
806 uint32_t payload_size = 0;
809 while (bitstream_peek(rw, 8) == 0xff) {
810 xu(8, ff_byte, tmp, 0xff, 0xff);
813 xu(8, last_payload_type_byte, tmp, 0, 254);
816 while (bitstream_peek(rw, 8) == 0xff) {
817 xu(8, ff_byte, tmp, 0xff, 0xff);
820 xu(8, last_payload_size_byte, tmp, 0, 254);
823 current->payload[k].payload_type = payload_type;
824 current->payload[k].payload_size = payload_size;
826 CHECK(FUNC(sei_payload)(ctx, rw, ¤t->payload[k]));
828 if (!cbs_h2645_read_more_rbsp_data(rw))
831 if (k >= H264_MAX_SEI_PAYLOADS) {
832 av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many payloads in "
833 "SEI message: found %d.\n", k);
834 return AVERROR_INVALIDDATA;
836 current->payload_count = k + 1;
838 for (k = 0; k < current->payload_count; k++) {
839 PutBitContext start_state;
843 // Somewhat clumsy: we write the payload twice when
844 // we don't know the size in advance. This will mess
845 // with trace output, but is otherwise harmless.
847 need_size = !current->payload[k].payload_size;
848 for (i = 0; i < 1 + need_size; i++) {
851 tmp = current->payload[k].payload_type;
853 xu(8, ff_byte, 0xff, 0xff, 0xff);
856 xu(8, last_payload_type_byte, tmp, 0, 254);
858 tmp = current->payload[k].payload_size;
860 xu(8, ff_byte, 0xff, 0xff, 0xff);
863 xu(8, last_payload_size_byte, tmp, 0, 254);
865 CHECK(FUNC(sei_payload)(ctx, rw, ¤t->payload[k]));
870 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
875 static int FUNC(aud)(CodedBitstreamContext *ctx, RWContext *rw,
880 HEADER("Access Unit Delimiter");
882 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header,
885 u(3, primary_pic_type, 0, 7);
887 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
892 static int FUNC(ref_pic_list_modification)(CodedBitstreamContext *ctx, RWContext *rw,
893 H264RawSliceHeader *current)
895 CodedBitstreamH264Context *h264 = ctx->priv_data;
896 const H264RawSPS *sps = h264->active_sps;
899 if (current->slice_type % 5 != 2 &&
900 current->slice_type % 5 != 4) {
901 flag(ref_pic_list_modification_flag_l0);
902 if (current->ref_pic_list_modification_flag_l0) {
903 for (i = 0; i < H264_MAX_RPLM_COUNT; i++) {
904 xue(modification_of_pic_nums_idc,
905 current->rplm_l0[i].modification_of_pic_nums_idc, 0, 3);
907 mopn = current->rplm_l0[i].modification_of_pic_nums_idc;
911 if (mopn == 0 || mopn == 1)
912 xue(abs_diff_pic_num_minus1,
913 current->rplm_l0[i].abs_diff_pic_num_minus1,
914 0, (1 + current->field_pic_flag) *
915 (1 << (sps->log2_max_frame_num_minus4 + 4)));
917 xue(long_term_pic_num,
918 current->rplm_l0[i].long_term_pic_num,
919 0, sps->max_num_ref_frames - 1);
924 if (current->slice_type % 5 == 1) {
925 flag(ref_pic_list_modification_flag_l1);
926 if (current->ref_pic_list_modification_flag_l1) {
927 for (i = 0; i < H264_MAX_RPLM_COUNT; i++) {
928 xue(modification_of_pic_nums_idc,
929 current->rplm_l1[i].modification_of_pic_nums_idc, 0, 3);
931 mopn = current->rplm_l1[i].modification_of_pic_nums_idc;
935 if (mopn == 0 || mopn == 1)
936 xue(abs_diff_pic_num_minus1,
937 current->rplm_l1[i].abs_diff_pic_num_minus1,
938 0, (1 + current->field_pic_flag) *
939 (1 << (sps->log2_max_frame_num_minus4 + 4)));
941 xue(long_term_pic_num,
942 current->rplm_l1[i].long_term_pic_num,
943 0, sps->max_num_ref_frames - 1);
951 static int FUNC(pred_weight_table)(CodedBitstreamContext *ctx, RWContext *rw,
952 H264RawSliceHeader *current)
954 CodedBitstreamH264Context *h264 = ctx->priv_data;
955 const H264RawSPS *sps = h264->active_sps;
959 ue(luma_log2_weight_denom, 0, 7);
961 chroma = !sps->separate_colour_plane_flag && sps->chroma_format_idc != 0;
963 ue(chroma_log2_weight_denom, 0, 7);
965 for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) {
966 flag(luma_weight_l0_flag[i]);
967 if (current->luma_weight_l0_flag[i]) {
968 se(luma_weight_l0[i], -128, +127);
969 se(luma_offset_l0[i], -128, +127);
972 flag(chroma_weight_l0_flag[i]);
973 if (current->chroma_weight_l0_flag[i]) {
974 for (j = 0; j < 2; j++) {
975 se(chroma_weight_l0[i][j], -128, +127);
976 se(chroma_offset_l0[i][j], -128, +127);
982 if (current->slice_type % 5 == 1) {
983 for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) {
984 flag(luma_weight_l1_flag[i]);
985 if (current->luma_weight_l1_flag[i]) {
986 se(luma_weight_l1[i], -128, +127);
987 se(luma_offset_l1[i], -128, +127);
990 flag(chroma_weight_l1_flag[i]);
991 if (current->chroma_weight_l1_flag[i]) {
992 for (j = 0; j < 2; j++) {
993 se(chroma_weight_l1[i][j], -128, +127);
994 se(chroma_offset_l1[i][j], -128, +127);
1004 static int FUNC(dec_ref_pic_marking)(CodedBitstreamContext *ctx, RWContext *rw,
1005 H264RawSliceHeader *current, int idr_pic_flag)
1007 CodedBitstreamH264Context *h264 = ctx->priv_data;
1008 const H264RawSPS *sps = h264->active_sps;
1013 flag(no_output_of_prior_pics_flag);
1014 flag(long_term_reference_flag);
1016 flag(adaptive_ref_pic_marking_mode_flag);
1017 if (current->adaptive_ref_pic_marking_mode_flag) {
1018 for (i = 0; i < H264_MAX_MMCO_COUNT; i++) {
1019 xue(memory_management_control_operation,
1020 current->mmco[i].memory_management_control_operation,
1023 mmco = current->mmco[i].memory_management_control_operation;
1027 if (mmco == 1 || mmco == 3)
1028 xue(difference_of_pic_nums_minus1,
1029 current->mmco[i].difference_of_pic_nums_minus1,
1032 xue(long_term_pic_num,
1033 current->mmco[i].long_term_pic_num,
1034 0, sps->max_num_ref_frames - 1);
1035 if (mmco == 3 || mmco == 6)
1036 xue(long_term_frame_idx,
1037 current->mmco[i].long_term_frame_idx,
1038 0, sps->max_num_ref_frames - 1);
1040 xue(max_long_term_frame_idx_plus1,
1041 current->mmco[i].max_long_term_frame_idx_plus1,
1042 0, sps->max_num_ref_frames);
1044 if (i == H264_MAX_MMCO_COUNT) {
1045 av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many "
1046 "memory management control operations.\n");
1047 return AVERROR_INVALIDDATA;
1055 static int FUNC(slice_header)(CodedBitstreamContext *ctx, RWContext *rw,
1056 H264RawSliceHeader *current)
1058 CodedBitstreamH264Context *h264 = ctx->priv_data;
1059 const H264RawSPS *sps;
1060 const H264RawPPS *pps;
1063 int slice_type_i, slice_type_p, slice_type_b;
1064 int slice_type_si, slice_type_sp;
1066 HEADER("Slice Header");
1068 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header,
1069 1 << H264_NAL_SLICE |
1070 1 << H264_NAL_IDR_SLICE |
1071 1 << H264_NAL_AUXILIARY_SLICE));
1073 if (current->nal_unit_header.nal_unit_type == H264_NAL_AUXILIARY_SLICE) {
1074 if (!h264->last_slice_nal_unit_type) {
1075 av_log(ctx->log_ctx, AV_LOG_ERROR, "Auxiliary slice "
1076 "is not decodable without the main picture "
1077 "in the same access unit.\n");
1078 return AVERROR_INVALIDDATA;
1081 h264->last_slice_nal_unit_type =
1082 current->nal_unit_header.nal_unit_type;
1084 idr_pic_flag = h264->last_slice_nal_unit_type == H264_NAL_IDR_SLICE;
1086 ue(first_mb_in_slice, 0, H264_MAX_MB_PIC_SIZE - 1);
1087 ue(slice_type, 0, 9);
1089 slice_type_i = current->slice_type % 5 == 2;
1090 slice_type_p = current->slice_type % 5 == 0;
1091 slice_type_b = current->slice_type % 5 == 1;
1092 slice_type_si = current->slice_type % 5 == 4;
1093 slice_type_sp = current->slice_type % 5 == 3;
1095 if (idr_pic_flag && !(slice_type_i || slice_type_si)) {
1096 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid slice type %d "
1097 "for IDR picture.\n", current->slice_type);
1098 return AVERROR_INVALIDDATA;
1101 ue(pic_parameter_set_id, 0, 255);
1103 pps = h264->pps[current->pic_parameter_set_id];
1105 av_log(ctx->log_ctx, AV_LOG_ERROR, "PPS id %d not available.\n",
1106 current->pic_parameter_set_id);
1107 return AVERROR_INVALIDDATA;
1109 h264->active_pps = pps;
1111 sps = h264->sps[pps->seq_parameter_set_id];
1113 av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
1114 pps->seq_parameter_set_id);
1115 return AVERROR_INVALIDDATA;
1117 h264->active_sps = sps;
1119 if (sps->separate_colour_plane_flag)
1120 u(2, colour_plane_id, 0, 2);
1122 u(sps->log2_max_frame_num_minus4 + 4, frame_num,
1123 0, (1 << (sps->log2_max_frame_num_minus4 + 4)) - 1);
1125 if (!sps->frame_mbs_only_flag) {
1126 flag(field_pic_flag);
1127 if (current->field_pic_flag)
1128 flag(bottom_field_flag);
1130 infer(bottom_field_flag, 0);
1132 infer(field_pic_flag, 0);
1133 infer(bottom_field_flag, 0);
1137 ue(idr_pic_id, 0, 65535);
1139 if (sps->pic_order_cnt_type == 0) {
1140 u(sps->log2_max_pic_order_cnt_lsb_minus4 + 4, pic_order_cnt_lsb,
1141 0, (1 << (sps->log2_max_pic_order_cnt_lsb_minus4 + 4)) - 1);
1142 if (pps->bottom_field_pic_order_in_frame_present_flag &&
1143 !current->field_pic_flag)
1144 se(delta_pic_order_cnt_bottom, INT32_MIN + 1, INT32_MAX);
1146 } else if (sps->pic_order_cnt_type == 1) {
1147 if (!sps->delta_pic_order_always_zero_flag) {
1148 se(delta_pic_order_cnt[0], INT32_MIN + 1, INT32_MAX);
1149 if (pps->bottom_field_pic_order_in_frame_present_flag &&
1150 !current->field_pic_flag)
1151 se(delta_pic_order_cnt[1], INT32_MIN + 1, INT32_MAX);
1153 infer(delta_pic_order_cnt[1], 0);
1155 infer(delta_pic_order_cnt[0], 0);
1156 infer(delta_pic_order_cnt[1], 0);
1160 if (pps->redundant_pic_cnt_present_flag)
1161 ue(redundant_pic_cnt, 0, 127);
1164 flag(direct_spatial_mv_pred_flag);
1166 if (slice_type_p || slice_type_sp || slice_type_b) {
1167 flag(num_ref_idx_active_override_flag);
1168 if (current->num_ref_idx_active_override_flag) {
1169 ue(num_ref_idx_l0_active_minus1, 0, 31);
1171 ue(num_ref_idx_l1_active_minus1, 0, 31);
1173 infer(num_ref_idx_l0_active_minus1,
1174 pps->num_ref_idx_l0_default_active_minus1);
1175 infer(num_ref_idx_l1_active_minus1,
1176 pps->num_ref_idx_l1_default_active_minus1);
1180 if (current->nal_unit_header.nal_unit_type == 20 ||
1181 current->nal_unit_header.nal_unit_type == 21) {
1182 av_log(ctx->log_ctx, AV_LOG_ERROR, "MVC / 3DAVC not supported.\n");
1183 return AVERROR_PATCHWELCOME;
1185 CHECK(FUNC(ref_pic_list_modification)(ctx, rw, current));
1188 if ((pps->weighted_pred_flag && (slice_type_p || slice_type_sp)) ||
1189 (pps->weighted_bipred_idc == 1 && slice_type_b)) {
1190 CHECK(FUNC(pred_weight_table)(ctx, rw, current));
1193 if (current->nal_unit_header.nal_ref_idc != 0) {
1194 CHECK(FUNC(dec_ref_pic_marking)(ctx, rw, current, idr_pic_flag));
1197 if (pps->entropy_coding_mode_flag &&
1198 !slice_type_i && !slice_type_si) {
1199 ue(cabac_init_idc, 0, 2);
1202 se(slice_qp_delta, - 51 - 6 * sps->bit_depth_luma_minus8,
1203 + 51 + 6 * sps->bit_depth_luma_minus8);
1204 if (slice_type_sp || slice_type_si) {
1206 flag(sp_for_switch_flag);
1207 se(slice_qs_delta, -51, +51);
1210 if (pps->deblocking_filter_control_present_flag) {
1211 ue(disable_deblocking_filter_idc, 0, 2);
1212 if (current->disable_deblocking_filter_idc != 1) {
1213 se(slice_alpha_c0_offset_div2, -6, +6);
1214 se(slice_beta_offset_div2, -6, +6);
1216 infer(slice_alpha_c0_offset_div2, 0);
1217 infer(slice_beta_offset_div2, 0);
1220 infer(disable_deblocking_filter_idc, 0);
1221 infer(slice_alpha_c0_offset_div2, 0);
1222 infer(slice_beta_offset_div2, 0);
1225 if (pps->num_slice_groups_minus1 > 0 &&
1226 pps->slice_group_map_type >= 3 &&
1227 pps->slice_group_map_type <= 5) {
1228 unsigned int pic_size, max, bits;
1230 pic_size = (sps->pic_width_in_mbs_minus1 + 1) *
1231 (sps->pic_height_in_map_units_minus1 + 1);
1232 max = (pic_size + pps->slice_group_change_rate_minus1) /
1233 (pps->slice_group_change_rate_minus1 + 1);
1234 bits = av_log2(2 * max - 1);
1236 u(bits, slice_group_change_cycle, 0, max);
1239 if (pps->entropy_coding_mode_flag) {
1240 av_unused int one = 1;
1241 while (byte_alignment(rw))
1242 xu(1, cabac_alignment_one_bit, one, 1, 1);