2 * This file is part of FFmpeg.
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.
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.
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
19 static int FUNC(rbsp_trailing_bits)(CodedBitstreamContext *ctx, RWContext *rw)
23 fixed(1, rbsp_stop_one_bit, 1);
24 while (byte_alignment(rw) != 0)
25 fixed(1, rbsp_alignment_zero_bit, 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 ses(delta_scale[i], -128, +127, 1, i);
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 ues(bit_rate_value_minus1[i], 0, UINT32_MAX - 1, 1, i);
99 ues(cpb_size_value_minus1[i], 0, UINT32_MAX - 1, 1, i);
100 flags(cbr_flag[i], 1, i);
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 flags(seq_scaling_list_present_flag[i], 1, 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 ses(offset_for_ref_frame[i], INT32_MIN + 1, INT32_MAX, 1, i);
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, MAX_UINT_BITS(bits));
346 u(bits, alpha_transparent_value, 0, MAX_UINT_BITS(bits));
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 ues(run_length_minus1[iGroup], 0, pic_size - 1, 1, iGroup);
395 } else if (current->slice_group_map_type == 2) {
396 for (iGroup = 0; iGroup < current->num_slice_groups_minus1; iGroup++) {
397 ues(top_left[iGroup], 0, pic_size - 1, 1, iGroup);
398 ues(bottom_right[iGroup],
399 current->top_left[iGroup], pic_size - 1, 1, iGroup);
401 } else if (current->slice_group_map_type == 3 ||
402 current->slice_group_map_type == 4 ||
403 current->slice_group_map_type == 5) {
404 flag(slice_group_change_direction_flag);
405 ue(slice_group_change_rate_minus1, 0, pic_size - 1);
406 } else if (current->slice_group_map_type == 6) {
407 ue(pic_size_in_map_units_minus1, pic_size - 1, pic_size - 1);
409 allocate(current->slice_group_id,
410 current->pic_size_in_map_units_minus1 + 1);
411 for (i = 0; i <= current->pic_size_in_map_units_minus1; i++)
412 us(av_log2(2 * current->num_slice_groups_minus1 + 1),
413 slice_group_id[i], 0, current->num_slice_groups_minus1, 1, i);
417 ue(num_ref_idx_l0_default_active_minus1, 0, 31);
418 ue(num_ref_idx_l1_default_active_minus1, 0, 31);
420 flag(weighted_pred_flag);
421 u(2, weighted_bipred_idc, 0, 2);
423 se(pic_init_qp_minus26, -26 - 6 * sps->bit_depth_luma_minus8, +25);
424 se(pic_init_qs_minus26, -26, +25);
425 se(chroma_qp_index_offset, -12, +12);
427 flag(deblocking_filter_control_present_flag);
428 flag(constrained_intra_pred_flag);
429 flag(redundant_pic_cnt_present_flag);
431 if (more_rbsp_data(current->more_rbsp_data))
433 flag(transform_8x8_mode_flag);
435 flag(pic_scaling_matrix_present_flag);
436 if (current->pic_scaling_matrix_present_flag) {
437 for (i = 0; i < 6 + (((sps->chroma_format_idc != 3) ? 2 : 6) *
438 current->transform_8x8_mode_flag); i++) {
439 flags(pic_scaling_list_present_flag[i], 1, i);
440 if (current->pic_scaling_list_present_flag[i]) {
442 CHECK(FUNC(scaling_list)(ctx, rw,
443 ¤t->scaling_list_4x4[i],
446 CHECK(FUNC(scaling_list)(ctx, rw,
447 ¤t->scaling_list_8x8[i - 6],
453 se(second_chroma_qp_index_offset, -12, +12);
455 infer(transform_8x8_mode_flag, 0);
456 infer(pic_scaling_matrix_present_flag, 0);
457 infer(second_chroma_qp_index_offset, current->chroma_qp_index_offset);
460 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
465 static int FUNC(sei_buffering_period)(CodedBitstreamContext *ctx, RWContext *rw,
466 H264RawSEIBufferingPeriod *current)
468 CodedBitstreamH264Context *h264 = ctx->priv_data;
469 const H264RawSPS *sps;
472 ue(seq_parameter_set_id, 0, 31);
474 sps = h264->sps[current->seq_parameter_set_id];
476 av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
477 current->seq_parameter_set_id);
478 return AVERROR_INVALIDDATA;
480 h264->active_sps = sps;
482 if (sps->vui.nal_hrd_parameters_present_flag) {
483 for (i = 0; i <= sps->vui.nal_hrd_parameters.cpb_cnt_minus1; i++) {
484 length = sps->vui.nal_hrd_parameters.initial_cpb_removal_delay_length_minus1 + 1;
485 xu(length, initial_cpb_removal_delay[SchedSelIdx],
486 current->nal.initial_cpb_removal_delay[i],
487 1, MAX_UINT_BITS(length), 1, i);
488 xu(length, initial_cpb_removal_delay_offset[SchedSelIdx],
489 current->nal.initial_cpb_removal_delay_offset[i],
490 0, MAX_UINT_BITS(length), 1, i);
494 if (sps->vui.vcl_hrd_parameters_present_flag) {
495 for (i = 0; i <= sps->vui.vcl_hrd_parameters.cpb_cnt_minus1; i++) {
496 length = sps->vui.vcl_hrd_parameters.initial_cpb_removal_delay_length_minus1 + 1;
497 xu(length, initial_cpb_removal_delay[SchedSelIdx],
498 current->vcl.initial_cpb_removal_delay[i],
499 1, MAX_UINT_BITS(length), 1, i);
500 xu(length, initial_cpb_removal_delay_offset[SchedSelIdx],
501 current->vcl.initial_cpb_removal_delay_offset[i],
502 0, MAX_UINT_BITS(length), 1, i);
509 static int FUNC(sei_pic_timestamp)(CodedBitstreamContext *ctx, RWContext *rw,
510 H264RawSEIPicTimestamp *current)
512 CodedBitstreamH264Context *h264 = ctx->priv_data;
513 const H264RawSPS *sps;
514 uint8_t time_offset_length;
518 flag(nuit_field_based_flag);
519 u(5, counting_type, 0, 6);
520 flag(full_timestamp_flag);
521 flag(discontinuity_flag);
522 flag(cnt_dropped_flag);
523 u(8, n_frames, 0, 255);
524 if (current->full_timestamp_flag) {
525 u(6, seconds_value, 0, 59);
526 u(6, minutes_value, 0, 59);
527 u(5, hours_value, 0, 23);
530 if (current->seconds_flag) {
531 u(6, seconds_value, 0, 59);
533 if (current->minutes_flag) {
534 u(6, minutes_value, 0, 59);
536 if (current->hours_flag)
537 u(5, hours_value, 0, 23);
542 sps = h264->active_sps;
543 if (sps->vui.nal_hrd_parameters_present_flag)
544 time_offset_length = sps->vui.nal_hrd_parameters.time_offset_length;
545 else if (sps->vui.vcl_hrd_parameters_present_flag)
546 time_offset_length = sps->vui.vcl_hrd_parameters.time_offset_length;
548 time_offset_length = 24;
550 if (time_offset_length > 0)
551 u(time_offset_length, time_offset,
552 0, MAX_UINT_BITS(time_offset_length));
554 infer(time_offset, 0);
559 static int FUNC(sei_pic_timing)(CodedBitstreamContext *ctx, RWContext *rw,
560 H264RawSEIPicTiming *current)
562 CodedBitstreamH264Context *h264 = ctx->priv_data;
563 const H264RawSPS *sps;
566 sps = h264->active_sps;
568 // If there is exactly one possible SPS but it is not yet active
569 // then just assume that it should be the active one.
571 for (i = 0; i < H264_MAX_SPS_COUNT; i++) {
584 av_log(ctx->log_ctx, AV_LOG_ERROR,
585 "No active SPS for pic_timing.\n");
586 return AVERROR_INVALIDDATA;
589 if (sps->vui.nal_hrd_parameters_present_flag ||
590 sps->vui.vcl_hrd_parameters_present_flag) {
591 const H264RawHRD *hrd;
593 if (sps->vui.nal_hrd_parameters_present_flag)
594 hrd = &sps->vui.nal_hrd_parameters;
595 else if (sps->vui.vcl_hrd_parameters_present_flag)
596 hrd = &sps->vui.vcl_hrd_parameters;
598 av_log(ctx->log_ctx, AV_LOG_ERROR,
599 "No HRD parameters for pic_timing.\n");
600 return AVERROR_INVALIDDATA;
603 u(hrd->cpb_removal_delay_length_minus1 + 1, cpb_removal_delay,
604 0, MAX_UINT_BITS(hrd->cpb_removal_delay_length_minus1 + 1));
605 u(hrd->dpb_output_delay_length_minus1 + 1, dpb_output_delay,
606 0, MAX_UINT_BITS(hrd->dpb_output_delay_length_minus1 + 1));
609 if (sps->vui.pic_struct_present_flag) {
610 static const int num_clock_ts[9] = {
611 1, 1, 1, 2, 2, 3, 3, 2, 3
615 u(4, pic_struct, 0, 8);
616 if (current->pic_struct > 8)
617 return AVERROR_INVALIDDATA;
619 for (i = 0; i < num_clock_ts[current->pic_struct]; i++) {
620 flags(clock_timestamp_flag[i], 1, i);
621 if (current->clock_timestamp_flag[i])
622 CHECK(FUNC(sei_pic_timestamp)(ctx, rw, ¤t->timestamp[i]));
629 static int FUNC(sei_pan_scan_rect)(CodedBitstreamContext *ctx, RWContext *rw,
630 H264RawSEIPanScanRect *current)
634 ue(pan_scan_rect_id, 0, UINT32_MAX - 1);
635 flag(pan_scan_rect_cancel_flag);
637 if (!current->pan_scan_rect_cancel_flag) {
638 ue(pan_scan_cnt_minus1, 0, 2);
640 for (i = 0; i <= current->pan_scan_cnt_minus1; i++) {
641 ses(pan_scan_rect_left_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
642 ses(pan_scan_rect_right_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
643 ses(pan_scan_rect_top_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
644 ses(pan_scan_rect_bottom_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
647 ue(pan_scan_rect_repetition_period, 0, 16384);
653 static int FUNC(sei_user_data_registered)(CodedBitstreamContext *ctx, RWContext *rw,
654 H264RawSEIUserDataRegistered *current,
655 uint32_t *payload_size)
659 u(8, itu_t_t35_country_code, 0x00, 0xff);
660 if (current->itu_t_t35_country_code != 0xff)
663 u(8, itu_t_t35_country_code_extension_byte, 0x00, 0xff);
668 if (*payload_size < i) {
669 av_log(ctx->log_ctx, AV_LOG_ERROR,
670 "Invalid SEI user data registered payload.\n");
671 return AVERROR_INVALIDDATA;
673 current->data_length = *payload_size - i;
675 *payload_size = i + current->data_length;
678 allocate(current->data, current->data_length);
679 for (j = 0; j < current->data_length; j++)
680 xu(8, itu_t_t35_payload_byte[i], current->data[j], 0x00, 0xff, 1, i + j);
685 static int FUNC(sei_user_data_unregistered)(CodedBitstreamContext *ctx, RWContext *rw,
686 H264RawSEIUserDataUnregistered *current,
687 uint32_t *payload_size)
692 if (*payload_size < 16) {
693 av_log(ctx->log_ctx, AV_LOG_ERROR,
694 "Invalid SEI user data unregistered payload.\n");
695 return AVERROR_INVALIDDATA;
697 current->data_length = *payload_size - 16;
699 *payload_size = 16 + current->data_length;
702 for (i = 0; i < 16; i++)
703 us(8, uuid_iso_iec_11578[i], 0x00, 0xff, 1, i);
705 allocate(current->data, current->data_length);
707 for (i = 0; i < current->data_length; i++)
708 xu(8, user_data_payload_byte[i], current->data[i], 0x00, 0xff, 1, i);
713 static int FUNC(sei_recovery_point)(CodedBitstreamContext *ctx, RWContext *rw,
714 H264RawSEIRecoveryPoint *current)
718 ue(recovery_frame_cnt, 0, 65535);
719 flag(exact_match_flag);
720 flag(broken_link_flag);
721 u(2, changing_slice_group_idc, 0, 2);
726 static int FUNC(sei_display_orientation)(CodedBitstreamContext *ctx, RWContext *rw,
727 H264RawSEIDisplayOrientation *current)
731 flag(display_orientation_cancel_flag);
732 if (!current->display_orientation_cancel_flag) {
735 u(16, anticlockwise_rotation, 0, 65535);
736 ue(display_orientation_repetition_period, 0, 16384);
737 flag(display_orientation_extension_flag);
743 static int FUNC(sei_payload)(CodedBitstreamContext *ctx, RWContext *rw,
744 H264RawSEIPayload *current)
747 int start_position, end_position;
750 start_position = get_bits_count(rw);
752 start_position = put_bits_count(rw);
755 switch (current->payload_type) {
756 case H264_SEI_TYPE_BUFFERING_PERIOD:
757 CHECK(FUNC(sei_buffering_period)
758 (ctx, rw, ¤t->payload.buffering_period));
760 case H264_SEI_TYPE_PIC_TIMING:
761 CHECK(FUNC(sei_pic_timing)
762 (ctx, rw, ¤t->payload.pic_timing));
764 case H264_SEI_TYPE_PAN_SCAN_RECT:
765 CHECK(FUNC(sei_pan_scan_rect)
766 (ctx, rw, ¤t->payload.pan_scan_rect));
768 case H264_SEI_TYPE_FILLER_PAYLOAD:
770 for (i = 0; i < current->payload_size; i++)
771 fixed(8, ff_byte, 0xff);
774 case H264_SEI_TYPE_USER_DATA_REGISTERED:
775 CHECK(FUNC(sei_user_data_registered)
776 (ctx, rw, ¤t->payload.user_data_registered, ¤t->payload_size));
778 case H264_SEI_TYPE_USER_DATA_UNREGISTERED:
779 CHECK(FUNC(sei_user_data_unregistered)
780 (ctx, rw, ¤t->payload.user_data_unregistered, ¤t->payload_size));
782 case H264_SEI_TYPE_RECOVERY_POINT:
783 CHECK(FUNC(sei_recovery_point)
784 (ctx, rw, ¤t->payload.recovery_point));
786 case H264_SEI_TYPE_DISPLAY_ORIENTATION:
787 CHECK(FUNC(sei_display_orientation)
788 (ctx, rw, ¤t->payload.display_orientation));
793 current->payload.other.data_length = current->payload_size;
795 allocate(current->payload.other.data, current->payload.other.data_length);
796 for (i = 0; i < current->payload.other.data_length; i++)
797 xu(8, payload_byte[i], current->payload.other.data[i], 0, 255, 1, i);
801 if (byte_alignment(rw)) {
802 fixed(1, bit_equal_to_one, 1);
803 while (byte_alignment(rw))
804 fixed(1, bit_equal_to_zero, 0);
808 end_position = get_bits_count(rw);
809 if (end_position < start_position + 8 * current->payload_size) {
810 av_log(ctx->log_ctx, AV_LOG_ERROR, "Incorrect SEI payload length: "
811 "header %"PRIu32" bits, actually %d bits.\n",
812 8 * current->payload_size,
813 end_position - start_position);
814 return AVERROR_INVALIDDATA;
817 end_position = put_bits_count(rw);
818 current->payload_size = (end_position - start_position) / 8;
824 static int FUNC(sei)(CodedBitstreamContext *ctx, RWContext *rw,
829 HEADER("Supplemental Enhancement Information");
831 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header,
835 for (k = 0; k < H264_MAX_SEI_PAYLOADS; k++) {
836 uint32_t payload_type = 0;
837 uint32_t payload_size = 0;
840 while (show_bits(rw, 8) == 0xff) {
841 fixed(8, ff_byte, 0xff);
844 xu(8, last_payload_type_byte, tmp, 0, 254, 0);
847 while (show_bits(rw, 8) == 0xff) {
848 fixed(8, ff_byte, 0xff);
851 xu(8, last_payload_size_byte, tmp, 0, 254, 0);
854 current->payload[k].payload_type = payload_type;
855 current->payload[k].payload_size = payload_size;
857 CHECK(FUNC(sei_payload)(ctx, rw, ¤t->payload[k]));
859 if (!cbs_h2645_read_more_rbsp_data(rw))
862 if (k >= H264_MAX_SEI_PAYLOADS) {
863 av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many payloads in "
864 "SEI message: found %d.\n", k);
865 return AVERROR_INVALIDDATA;
867 current->payload_count = k + 1;
869 for (k = 0; k < current->payload_count; k++) {
870 PutBitContext start_state;
874 // Somewhat clumsy: we write the payload twice when
875 // we don't know the size in advance. This will mess
876 // with trace output, but is otherwise harmless.
878 need_size = !current->payload[k].payload_size;
879 for (i = 0; i < 1 + need_size; i++) {
882 tmp = current->payload[k].payload_type;
884 fixed(8, ff_byte, 0xff);
887 xu(8, last_payload_type_byte, tmp, 0, 254, 0);
889 tmp = current->payload[k].payload_size;
891 fixed(8, ff_byte, 0xff);
894 xu(8, last_payload_size_byte, tmp, 0, 254, 0);
896 CHECK(FUNC(sei_payload)(ctx, rw, ¤t->payload[k]));
901 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
906 static int FUNC(aud)(CodedBitstreamContext *ctx, RWContext *rw,
911 HEADER("Access Unit Delimiter");
913 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header,
916 u(3, primary_pic_type, 0, 7);
918 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
923 static int FUNC(ref_pic_list_modification)(CodedBitstreamContext *ctx, RWContext *rw,
924 H264RawSliceHeader *current)
926 CodedBitstreamH264Context *h264 = ctx->priv_data;
927 const H264RawSPS *sps = h264->active_sps;
930 if (current->slice_type % 5 != 2 &&
931 current->slice_type % 5 != 4) {
932 flag(ref_pic_list_modification_flag_l0);
933 if (current->ref_pic_list_modification_flag_l0) {
934 for (i = 0; i < H264_MAX_RPLM_COUNT; i++) {
935 xue(modification_of_pic_nums_idc,
936 current->rplm_l0[i].modification_of_pic_nums_idc, 0, 3, 0);
938 mopn = current->rplm_l0[i].modification_of_pic_nums_idc;
942 if (mopn == 0 || mopn == 1)
943 xue(abs_diff_pic_num_minus1,
944 current->rplm_l0[i].abs_diff_pic_num_minus1,
945 0, (1 + current->field_pic_flag) *
946 (1 << (sps->log2_max_frame_num_minus4 + 4)), 0);
948 xue(long_term_pic_num,
949 current->rplm_l0[i].long_term_pic_num,
950 0, sps->max_num_ref_frames - 1, 0);
955 if (current->slice_type % 5 == 1) {
956 flag(ref_pic_list_modification_flag_l1);
957 if (current->ref_pic_list_modification_flag_l1) {
958 for (i = 0; i < H264_MAX_RPLM_COUNT; i++) {
959 xue(modification_of_pic_nums_idc,
960 current->rplm_l1[i].modification_of_pic_nums_idc, 0, 3, 0);
962 mopn = current->rplm_l1[i].modification_of_pic_nums_idc;
966 if (mopn == 0 || mopn == 1)
967 xue(abs_diff_pic_num_minus1,
968 current->rplm_l1[i].abs_diff_pic_num_minus1,
969 0, (1 + current->field_pic_flag) *
970 (1 << (sps->log2_max_frame_num_minus4 + 4)), 0);
972 xue(long_term_pic_num,
973 current->rplm_l1[i].long_term_pic_num,
974 0, sps->max_num_ref_frames - 1, 0);
982 static int FUNC(pred_weight_table)(CodedBitstreamContext *ctx, RWContext *rw,
983 H264RawSliceHeader *current)
985 CodedBitstreamH264Context *h264 = ctx->priv_data;
986 const H264RawSPS *sps = h264->active_sps;
990 ue(luma_log2_weight_denom, 0, 7);
992 chroma = !sps->separate_colour_plane_flag && sps->chroma_format_idc != 0;
994 ue(chroma_log2_weight_denom, 0, 7);
996 for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) {
997 flags(luma_weight_l0_flag[i], 1, i);
998 if (current->luma_weight_l0_flag[i]) {
999 ses(luma_weight_l0[i], -128, +127, 1, i);
1000 ses(luma_offset_l0[i], -128, +127, 1, i);
1003 flags(chroma_weight_l0_flag[i], 1, i);
1004 if (current->chroma_weight_l0_flag[i]) {
1005 for (j = 0; j < 2; j++) {
1006 ses(chroma_weight_l0[i][j], -128, +127, 2, i, j);
1007 ses(chroma_offset_l0[i][j], -128, +127, 2, i, j);
1013 if (current->slice_type % 5 == 1) {
1014 for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) {
1015 flags(luma_weight_l1_flag[i], 1, i);
1016 if (current->luma_weight_l1_flag[i]) {
1017 ses(luma_weight_l1[i], -128, +127, 1, i);
1018 ses(luma_offset_l1[i], -128, +127, 1, i);
1021 flags(chroma_weight_l1_flag[i], 1, i);
1022 if (current->chroma_weight_l1_flag[i]) {
1023 for (j = 0; j < 2; j++) {
1024 ses(chroma_weight_l1[i][j], -128, +127, 2, i, j);
1025 ses(chroma_offset_l1[i][j], -128, +127, 2, i, j);
1035 static int FUNC(dec_ref_pic_marking)(CodedBitstreamContext *ctx, RWContext *rw,
1036 H264RawSliceHeader *current, int idr_pic_flag)
1038 CodedBitstreamH264Context *h264 = ctx->priv_data;
1039 const H264RawSPS *sps = h264->active_sps;
1044 flag(no_output_of_prior_pics_flag);
1045 flag(long_term_reference_flag);
1047 flag(adaptive_ref_pic_marking_mode_flag);
1048 if (current->adaptive_ref_pic_marking_mode_flag) {
1049 for (i = 0; i < H264_MAX_MMCO_COUNT; i++) {
1050 xue(memory_management_control_operation,
1051 current->mmco[i].memory_management_control_operation,
1054 mmco = current->mmco[i].memory_management_control_operation;
1058 if (mmco == 1 || mmco == 3)
1059 xue(difference_of_pic_nums_minus1,
1060 current->mmco[i].difference_of_pic_nums_minus1,
1063 xue(long_term_pic_num,
1064 current->mmco[i].long_term_pic_num,
1065 0, sps->max_num_ref_frames - 1, 0);
1066 if (mmco == 3 || mmco == 6)
1067 xue(long_term_frame_idx,
1068 current->mmco[i].long_term_frame_idx,
1069 0, sps->max_num_ref_frames - 1, 0);
1071 xue(max_long_term_frame_idx_plus1,
1072 current->mmco[i].max_long_term_frame_idx_plus1,
1073 0, sps->max_num_ref_frames, 0);
1075 if (i == H264_MAX_MMCO_COUNT) {
1076 av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many "
1077 "memory management control operations.\n");
1078 return AVERROR_INVALIDDATA;
1086 static int FUNC(slice_header)(CodedBitstreamContext *ctx, RWContext *rw,
1087 H264RawSliceHeader *current)
1089 CodedBitstreamH264Context *h264 = ctx->priv_data;
1090 const H264RawSPS *sps;
1091 const H264RawPPS *pps;
1094 int slice_type_i, slice_type_p, slice_type_b;
1095 int slice_type_si, slice_type_sp;
1097 HEADER("Slice Header");
1099 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header,
1100 1 << H264_NAL_SLICE |
1101 1 << H264_NAL_IDR_SLICE |
1102 1 << H264_NAL_AUXILIARY_SLICE));
1104 if (current->nal_unit_header.nal_unit_type == H264_NAL_AUXILIARY_SLICE) {
1105 if (!h264->last_slice_nal_unit_type) {
1106 av_log(ctx->log_ctx, AV_LOG_ERROR, "Auxiliary slice "
1107 "is not decodable without the main picture "
1108 "in the same access unit.\n");
1109 return AVERROR_INVALIDDATA;
1112 h264->last_slice_nal_unit_type =
1113 current->nal_unit_header.nal_unit_type;
1115 idr_pic_flag = h264->last_slice_nal_unit_type == H264_NAL_IDR_SLICE;
1117 ue(first_mb_in_slice, 0, H264_MAX_MB_PIC_SIZE - 1);
1118 ue(slice_type, 0, 9);
1120 slice_type_i = current->slice_type % 5 == 2;
1121 slice_type_p = current->slice_type % 5 == 0;
1122 slice_type_b = current->slice_type % 5 == 1;
1123 slice_type_si = current->slice_type % 5 == 4;
1124 slice_type_sp = current->slice_type % 5 == 3;
1126 if (idr_pic_flag && !(slice_type_i || slice_type_si)) {
1127 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid slice type %d "
1128 "for IDR picture.\n", current->slice_type);
1129 return AVERROR_INVALIDDATA;
1132 ue(pic_parameter_set_id, 0, 255);
1134 pps = h264->pps[current->pic_parameter_set_id];
1136 av_log(ctx->log_ctx, AV_LOG_ERROR, "PPS id %d not available.\n",
1137 current->pic_parameter_set_id);
1138 return AVERROR_INVALIDDATA;
1140 h264->active_pps = pps;
1142 sps = h264->sps[pps->seq_parameter_set_id];
1144 av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
1145 pps->seq_parameter_set_id);
1146 return AVERROR_INVALIDDATA;
1148 h264->active_sps = sps;
1150 if (sps->separate_colour_plane_flag)
1151 u(2, colour_plane_id, 0, 2);
1153 u(sps->log2_max_frame_num_minus4 + 4, frame_num,
1154 0, MAX_UINT_BITS(sps->log2_max_frame_num_minus4 + 4));
1156 if (!sps->frame_mbs_only_flag) {
1157 flag(field_pic_flag);
1158 if (current->field_pic_flag)
1159 flag(bottom_field_flag);
1161 infer(bottom_field_flag, 0);
1163 infer(field_pic_flag, 0);
1164 infer(bottom_field_flag, 0);
1168 ue(idr_pic_id, 0, 65535);
1170 if (sps->pic_order_cnt_type == 0) {
1171 u(sps->log2_max_pic_order_cnt_lsb_minus4 + 4, pic_order_cnt_lsb,
1172 0, MAX_UINT_BITS(sps->log2_max_pic_order_cnt_lsb_minus4 + 4));
1173 if (pps->bottom_field_pic_order_in_frame_present_flag &&
1174 !current->field_pic_flag)
1175 se(delta_pic_order_cnt_bottom, INT32_MIN + 1, INT32_MAX);
1177 } else if (sps->pic_order_cnt_type == 1) {
1178 if (!sps->delta_pic_order_always_zero_flag) {
1179 se(delta_pic_order_cnt[0], INT32_MIN + 1, INT32_MAX);
1180 if (pps->bottom_field_pic_order_in_frame_present_flag &&
1181 !current->field_pic_flag)
1182 se(delta_pic_order_cnt[1], INT32_MIN + 1, INT32_MAX);
1184 infer(delta_pic_order_cnt[1], 0);
1186 infer(delta_pic_order_cnt[0], 0);
1187 infer(delta_pic_order_cnt[1], 0);
1191 if (pps->redundant_pic_cnt_present_flag)
1192 ue(redundant_pic_cnt, 0, 127);
1195 flag(direct_spatial_mv_pred_flag);
1197 if (slice_type_p || slice_type_sp || slice_type_b) {
1198 flag(num_ref_idx_active_override_flag);
1199 if (current->num_ref_idx_active_override_flag) {
1200 ue(num_ref_idx_l0_active_minus1, 0, 31);
1202 ue(num_ref_idx_l1_active_minus1, 0, 31);
1204 infer(num_ref_idx_l0_active_minus1,
1205 pps->num_ref_idx_l0_default_active_minus1);
1206 infer(num_ref_idx_l1_active_minus1,
1207 pps->num_ref_idx_l1_default_active_minus1);
1211 if (current->nal_unit_header.nal_unit_type == 20 ||
1212 current->nal_unit_header.nal_unit_type == 21) {
1213 av_log(ctx->log_ctx, AV_LOG_ERROR, "MVC / 3DAVC not supported.\n");
1214 return AVERROR_PATCHWELCOME;
1216 CHECK(FUNC(ref_pic_list_modification)(ctx, rw, current));
1219 if ((pps->weighted_pred_flag && (slice_type_p || slice_type_sp)) ||
1220 (pps->weighted_bipred_idc == 1 && slice_type_b)) {
1221 CHECK(FUNC(pred_weight_table)(ctx, rw, current));
1224 if (current->nal_unit_header.nal_ref_idc != 0) {
1225 CHECK(FUNC(dec_ref_pic_marking)(ctx, rw, current, idr_pic_flag));
1228 if (pps->entropy_coding_mode_flag &&
1229 !slice_type_i && !slice_type_si) {
1230 ue(cabac_init_idc, 0, 2);
1233 se(slice_qp_delta, - 51 - 6 * sps->bit_depth_luma_minus8,
1234 + 51 + 6 * sps->bit_depth_luma_minus8);
1235 if (slice_type_sp || slice_type_si) {
1237 flag(sp_for_switch_flag);
1238 se(slice_qs_delta, -51, +51);
1241 if (pps->deblocking_filter_control_present_flag) {
1242 ue(disable_deblocking_filter_idc, 0, 2);
1243 if (current->disable_deblocking_filter_idc != 1) {
1244 se(slice_alpha_c0_offset_div2, -6, +6);
1245 se(slice_beta_offset_div2, -6, +6);
1247 infer(slice_alpha_c0_offset_div2, 0);
1248 infer(slice_beta_offset_div2, 0);
1251 infer(disable_deblocking_filter_idc, 0);
1252 infer(slice_alpha_c0_offset_div2, 0);
1253 infer(slice_beta_offset_div2, 0);
1256 if (pps->num_slice_groups_minus1 > 0 &&
1257 pps->slice_group_map_type >= 3 &&
1258 pps->slice_group_map_type <= 5) {
1259 unsigned int pic_size, max, bits;
1261 pic_size = (sps->pic_width_in_mbs_minus1 + 1) *
1262 (sps->pic_height_in_map_units_minus1 + 1);
1263 max = (pic_size + pps->slice_group_change_rate_minus1) /
1264 (pps->slice_group_change_rate_minus1 + 1);
1265 bits = av_log2(2 * max - 1);
1267 u(bits, slice_group_change_cycle, 0, max);
1270 if (pps->entropy_coding_mode_flag) {
1271 while (byte_alignment(rw))
1272 fixed(1, cabac_alignment_one_bit, 1);
1278 static int FUNC(filler)(CodedBitstreamContext *ctx, RWContext *rw,
1279 H264RawFiller *current)
1283 HEADER("Filler Data");
1285 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header,
1286 1 << H264_NAL_FILLER_DATA));
1289 while (show_bits(rw, 8) == 0xff) {
1290 fixed(8, ff_byte, 0xff);
1291 ++current->filler_size;
1296 for (i = 0; i < current->filler_size; i++)
1297 fixed(8, ff_byte, 0xff);
1301 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));