| /* |
| * HEVC Supplementary Enhancement Information messages |
| * |
| * Copyright (C) 2012 - 2013 Guillaume Martres |
| * Copyright (C) 2012 - 2013 Gildas Cocherel |
| * Copyright (C) 2013 Vittorio Giovara |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "atsc_a53.h" |
| #include "dynamic_hdr10_plus.h" |
| #include "golomb.h" |
| #include "hevc_ps.h" |
| #include "hevc_sei.h" |
| |
| static int decode_nal_sei_decoded_picture_hash(HEVCSEIPictureHash *s, GetBitContext *gb) |
| { |
| int cIdx, i; |
| uint8_t hash_type; |
| //uint16_t picture_crc; |
| //uint32_t picture_checksum; |
| hash_type = get_bits(gb, 8); |
| |
| for (cIdx = 0; cIdx < 3/*((s->sps->chroma_format_idc == 0) ? 1 : 3)*/; cIdx++) { |
| if (hash_type == 0) { |
| s->is_md5 = 1; |
| for (i = 0; i < 16; i++) |
| s->md5[cIdx][i] = get_bits(gb, 8); |
| } else if (hash_type == 1) { |
| // picture_crc = get_bits(gb, 16); |
| skip_bits(gb, 16); |
| } else if (hash_type == 2) { |
| // picture_checksum = get_bits_long(gb, 32); |
| skip_bits(gb, 32); |
| } |
| } |
| return 0; |
| } |
| |
| static int decode_nal_sei_mastering_display_info(HEVCSEIMasteringDisplay *s, GetBitContext *gb) |
| { |
| int i; |
| // Mastering primaries |
| for (i = 0; i < 3; i++) { |
| s->display_primaries[i][0] = get_bits(gb, 16); |
| s->display_primaries[i][1] = get_bits(gb, 16); |
| } |
| // White point (x, y) |
| s->white_point[0] = get_bits(gb, 16); |
| s->white_point[1] = get_bits(gb, 16); |
| |
| // Max and min luminance of mastering display |
| s->max_luminance = get_bits_long(gb, 32); |
| s->min_luminance = get_bits_long(gb, 32); |
| |
| // As this SEI message comes before the first frame that references it, |
| // initialize the flag to 2 and decrement on IRAP access unit so it |
| // persists for the coded video sequence (e.g., between two IRAPs) |
| s->present = 2; |
| return 0; |
| } |
| |
| static int decode_nal_sei_content_light_info(HEVCSEIContentLight *s, GetBitContext *gb) |
| { |
| // Max and average light levels |
| s->max_content_light_level = get_bits(gb, 16); |
| s->max_pic_average_light_level = get_bits(gb, 16); |
| // As this SEI message comes before the first frame that references it, |
| // initialize the flag to 2 and decrement on IRAP access unit so it |
| // persists for the coded video sequence (e.g., between two IRAPs) |
| s->present = 2; |
| return 0; |
| } |
| |
| static int decode_nal_sei_frame_packing_arrangement(HEVCSEIFramePacking *s, GetBitContext *gb) |
| { |
| get_ue_golomb_long(gb); // frame_packing_arrangement_id |
| s->present = !get_bits1(gb); |
| |
| if (s->present) { |
| s->arrangement_type = get_bits(gb, 7); |
| s->quincunx_subsampling = get_bits1(gb); |
| s->content_interpretation_type = get_bits(gb, 6); |
| |
| // spatial_flipping_flag, frame0_flipped_flag, field_views_flag |
| skip_bits(gb, 3); |
| s->current_frame_is_frame0_flag = get_bits1(gb); |
| // frame0_self_contained_flag, frame1_self_contained_flag |
| skip_bits(gb, 2); |
| |
| if (!s->quincunx_subsampling && s->arrangement_type != 5) |
| skip_bits(gb, 16); // frame[01]_grid_position_[xy] |
| skip_bits(gb, 8); // frame_packing_arrangement_reserved_byte |
| skip_bits1(gb); // frame_packing_arrangement_persistence_flag |
| } |
| skip_bits1(gb); // upsampled_aspect_ratio_flag |
| return 0; |
| } |
| |
| static int decode_nal_sei_display_orientation(HEVCSEIDisplayOrientation *s, GetBitContext *gb) |
| { |
| s->present = !get_bits1(gb); |
| |
| if (s->present) { |
| s->hflip = get_bits1(gb); // hor_flip |
| s->vflip = get_bits1(gb); // ver_flip |
| |
| s->anticlockwise_rotation = get_bits(gb, 16); |
| skip_bits1(gb); // display_orientation_persistence_flag |
| } |
| |
| return 0; |
| } |
| |
| static int decode_nal_sei_pic_timing(HEVCSEI *s, GetBitContext *gb, const HEVCParamSets *ps, |
| void *logctx, int size) |
| { |
| HEVCSEIPictureTiming *h = &s->picture_timing; |
| HEVCSPS *sps; |
| |
| if (!ps->sps_list[s->active_seq_parameter_set_id]) |
| return(AVERROR(ENOMEM)); |
| sps = (HEVCSPS*)ps->sps_list[s->active_seq_parameter_set_id]->data; |
| |
| if (sps->vui.frame_field_info_present_flag) { |
| int pic_struct = get_bits(gb, 4); |
| h->picture_struct = AV_PICTURE_STRUCTURE_UNKNOWN; |
| if (pic_struct == 2 || pic_struct == 10 || pic_struct == 12) { |
| av_log(logctx, AV_LOG_DEBUG, "BOTTOM Field\n"); |
| h->picture_struct = AV_PICTURE_STRUCTURE_BOTTOM_FIELD; |
| } else if (pic_struct == 1 || pic_struct == 9 || pic_struct == 11) { |
| av_log(logctx, AV_LOG_DEBUG, "TOP Field\n"); |
| h->picture_struct = AV_PICTURE_STRUCTURE_TOP_FIELD; |
| } else if (pic_struct == 7) { |
| av_log(logctx, AV_LOG_DEBUG, "Frame/Field Doubling\n"); |
| h->picture_struct = HEVC_SEI_PIC_STRUCT_FRAME_DOUBLING; |
| } else if (pic_struct == 8) { |
| av_log(logctx, AV_LOG_DEBUG, "Frame/Field Tripling\n"); |
| h->picture_struct = HEVC_SEI_PIC_STRUCT_FRAME_TRIPLING; |
| } |
| get_bits(gb, 2); // source_scan_type |
| get_bits(gb, 1); // duplicate_flag |
| skip_bits1(gb); |
| size--; |
| } |
| skip_bits_long(gb, 8 * size); |
| |
| return 0; |
| } |
| |
| static int decode_registered_user_data_closed_caption(HEVCSEIA53Caption *s, GetBitContext *gb, |
| int size) |
| { |
| int ret; |
| |
| if (size < 3) |
| return AVERROR(EINVAL); |
| |
| ret = ff_parse_a53_cc(&s->buf_ref, gb->buffer + get_bits_count(gb) / 8, size); |
| |
| if (ret < 0) |
| return ret; |
| |
| skip_bits_long(gb, size * 8); |
| |
| return 0; |
| } |
| |
| static int decode_nal_sei_user_data_unregistered(HEVCSEIUnregistered *s, GetBitContext *gb, |
| int size) |
| { |
| AVBufferRef *buf_ref, **tmp; |
| |
| if (size < 16 || size >= INT_MAX - 1) |
| return AVERROR_INVALIDDATA; |
| |
| tmp = av_realloc_array(s->buf_ref, s->nb_buf_ref + 1, sizeof(*s->buf_ref)); |
| if (!tmp) |
| return AVERROR(ENOMEM); |
| s->buf_ref = tmp; |
| |
| buf_ref = av_buffer_alloc(size + 1); |
| if (!buf_ref) |
| return AVERROR(ENOMEM); |
| |
| for (int i = 0; i < size; i++) |
| buf_ref->data[i] = get_bits(gb, 8); |
| buf_ref->data[size] = 0; |
| buf_ref->size = size; |
| s->buf_ref[s->nb_buf_ref++] = buf_ref; |
| |
| return 0; |
| } |
| |
| static int decode_registered_user_data_dynamic_hdr_plus(HEVCSEIDynamicHDRPlus *s, |
| GetBitContext *gb, int size) |
| { |
| size_t meta_size; |
| int err; |
| AVDynamicHDRPlus *metadata = av_dynamic_hdr_plus_alloc(&meta_size); |
| if (!metadata) |
| return AVERROR(ENOMEM); |
| |
| err = ff_parse_itu_t_t35_to_dynamic_hdr10_plus(metadata, |
| gb->buffer + get_bits_count(gb) / 8, size); |
| if (err < 0) { |
| av_free(metadata); |
| return err; |
| } |
| |
| av_buffer_unref(&s->info); |
| s->info = av_buffer_create((uint8_t *)metadata, meta_size, NULL, NULL, 0); |
| if (!s->info) { |
| av_free(metadata); |
| return AVERROR(ENOMEM); |
| } |
| |
| skip_bits_long(gb, size * 8); |
| |
| return 0; |
| } |
| |
| static int decode_nal_sei_user_data_registered_itu_t_t35(HEVCSEI *s, GetBitContext *gb, |
| int size) |
| { |
| const uint8_t usa_country_code = 0xB5; |
| const uint16_t smpte_provider_code = 0x003C; |
| |
| uint8_t country_code = 0; |
| uint16_t provider_code = 0; |
| |
| if (size < 3) |
| return AVERROR(EINVAL); |
| size -= 3; |
| |
| country_code = get_bits(gb, 8); |
| if (country_code == 0xFF) { |
| skip_bits(gb, 8); |
| size--; |
| } |
| |
| provider_code = get_bits(gb, 16); |
| |
| if (country_code == usa_country_code && |
| provider_code == smpte_provider_code) { |
| // A/341 Amendment - 2094-40 |
| const uint16_t smpte2094_40_provider_oriented_code = 0x0001; |
| const uint8_t smpte2094_40_application_identifier = 0x04; |
| uint16_t provider_oriented_code; |
| uint8_t application_identifier; |
| |
| if (size < 3) |
| return AVERROR(EINVAL); |
| size -= 3; |
| |
| provider_oriented_code = get_bits(gb, 16); |
| application_identifier = get_bits(gb, 8); |
| if (provider_oriented_code == smpte2094_40_provider_oriented_code && |
| application_identifier == smpte2094_40_application_identifier) { |
| return decode_registered_user_data_dynamic_hdr_plus(&s->dynamic_hdr_plus, gb, size); |
| } |
| } else { |
| uint32_t user_identifier; |
| |
| if (size < 4) |
| return AVERROR(EINVAL); |
| size -= 4; |
| |
| user_identifier = get_bits_long(gb, 32); |
| switch (user_identifier) { |
| case MKBETAG('G', 'A', '9', '4'): |
| return decode_registered_user_data_closed_caption(&s->a53_caption, gb, size); |
| default: |
| break; |
| } |
| } |
| skip_bits_long(gb, size * 8); |
| return 0; |
| } |
| |
| static int decode_nal_sei_active_parameter_sets(HEVCSEI *s, GetBitContext *gb, void *logctx) |
| { |
| int num_sps_ids_minus1; |
| int i; |
| unsigned active_seq_parameter_set_id; |
| |
| get_bits(gb, 4); // active_video_parameter_set_id |
| get_bits(gb, 1); // self_contained_cvs_flag |
| get_bits(gb, 1); // num_sps_ids_minus1 |
| num_sps_ids_minus1 = get_ue_golomb_long(gb); // num_sps_ids_minus1 |
| |
| if (num_sps_ids_minus1 < 0 || num_sps_ids_minus1 > 15) { |
| av_log(logctx, AV_LOG_ERROR, "num_sps_ids_minus1 %d invalid\n", num_sps_ids_minus1); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| active_seq_parameter_set_id = get_ue_golomb_long(gb); |
| if (active_seq_parameter_set_id >= HEVC_MAX_SPS_COUNT) { |
| av_log(logctx, AV_LOG_ERROR, "active_parameter_set_id %d invalid\n", active_seq_parameter_set_id); |
| return AVERROR_INVALIDDATA; |
| } |
| s->active_seq_parameter_set_id = active_seq_parameter_set_id; |
| |
| for (i = 1; i <= num_sps_ids_minus1; i++) |
| get_ue_golomb_long(gb); // active_seq_parameter_set_id[i] |
| |
| return 0; |
| } |
| |
| static int decode_nal_sei_alternative_transfer(HEVCSEIAlternativeTransfer *s, GetBitContext *gb) |
| { |
| s->present = 1; |
| s->preferred_transfer_characteristics = get_bits(gb, 8); |
| return 0; |
| } |
| |
| static int decode_nal_sei_timecode(HEVCSEITimeCode *s, GetBitContext *gb) |
| { |
| s->num_clock_ts = get_bits(gb, 2); |
| |
| for (int i = 0; i < s->num_clock_ts; i++) { |
| s->clock_timestamp_flag[i] = get_bits(gb, 1); |
| |
| if (s->clock_timestamp_flag[i]) { |
| s->units_field_based_flag[i] = get_bits(gb, 1); |
| s->counting_type[i] = get_bits(gb, 5); |
| s->full_timestamp_flag[i] = get_bits(gb, 1); |
| s->discontinuity_flag[i] = get_bits(gb, 1); |
| s->cnt_dropped_flag[i] = get_bits(gb, 1); |
| |
| s->n_frames[i] = get_bits(gb, 9); |
| |
| if (s->full_timestamp_flag[i]) { |
| s->seconds_value[i] = av_clip(get_bits(gb, 6), 0, 59); |
| s->minutes_value[i] = av_clip(get_bits(gb, 6), 0, 59); |
| s->hours_value[i] = av_clip(get_bits(gb, 5), 0, 23); |
| } else { |
| s->seconds_flag[i] = get_bits(gb, 1); |
| if (s->seconds_flag[i]) { |
| s->seconds_value[i] = av_clip(get_bits(gb, 6), 0, 59); |
| s->minutes_flag[i] = get_bits(gb, 1); |
| if (s->minutes_flag[i]) { |
| s->minutes_value[i] = av_clip(get_bits(gb, 6), 0, 59); |
| s->hours_flag[i] = get_bits(gb, 1); |
| if (s->hours_flag[i]) { |
| s->hours_value[i] = av_clip(get_bits(gb, 5), 0, 23); |
| } |
| } |
| } |
| } |
| |
| s->time_offset_length[i] = get_bits(gb, 5); |
| if (s->time_offset_length[i] > 0) { |
| s->time_offset_value[i] = get_bits(gb, s->time_offset_length[i]); |
| } |
| } |
| } |
| |
| s->present = 1; |
| return 0; |
| } |
| |
| |
| static int decode_nal_sei_prefix(GetBitContext *gb, void *logctx, HEVCSEI *s, |
| const HEVCParamSets *ps, int type, int size) |
| { |
| switch (type) { |
| case 256: // Mismatched value from HM 8.1 |
| return decode_nal_sei_decoded_picture_hash(&s->picture_hash, gb); |
| case HEVC_SEI_TYPE_FRAME_PACKING: |
| return decode_nal_sei_frame_packing_arrangement(&s->frame_packing, gb); |
| case HEVC_SEI_TYPE_DISPLAY_ORIENTATION: |
| return decode_nal_sei_display_orientation(&s->display_orientation, gb); |
| case HEVC_SEI_TYPE_PICTURE_TIMING: |
| return decode_nal_sei_pic_timing(s, gb, ps, logctx, size); |
| case HEVC_SEI_TYPE_MASTERING_DISPLAY_INFO: |
| return decode_nal_sei_mastering_display_info(&s->mastering_display, gb); |
| case HEVC_SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO: |
| return decode_nal_sei_content_light_info(&s->content_light, gb); |
| case HEVC_SEI_TYPE_ACTIVE_PARAMETER_SETS: |
| return decode_nal_sei_active_parameter_sets(s, gb, logctx); |
| case HEVC_SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35: |
| return decode_nal_sei_user_data_registered_itu_t_t35(s, gb, size); |
| case HEVC_SEI_TYPE_USER_DATA_UNREGISTERED: |
| return decode_nal_sei_user_data_unregistered(&s->unregistered, gb, size); |
| case HEVC_SEI_TYPE_ALTERNATIVE_TRANSFER_CHARACTERISTICS: |
| return decode_nal_sei_alternative_transfer(&s->alternative_transfer, gb); |
| case HEVC_SEI_TYPE_TIME_CODE: |
| return decode_nal_sei_timecode(&s->timecode, gb); |
| default: |
| av_log(logctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type); |
| skip_bits_long(gb, 8 * size); |
| return 0; |
| } |
| } |
| |
| static int decode_nal_sei_suffix(GetBitContext *gb, void *logctx, HEVCSEI *s, |
| int type, int size) |
| { |
| switch (type) { |
| case HEVC_SEI_TYPE_DECODED_PICTURE_HASH: |
| return decode_nal_sei_decoded_picture_hash(&s->picture_hash, gb); |
| default: |
| av_log(logctx, AV_LOG_DEBUG, "Skipped SUFFIX SEI %d\n", type); |
| skip_bits_long(gb, 8 * size); |
| return 0; |
| } |
| } |
| |
| static int decode_nal_sei_message(GetBitContext *gb, void *logctx, HEVCSEI *s, |
| const HEVCParamSets *ps, int nal_unit_type) |
| { |
| int payload_type = 0; |
| int payload_size = 0; |
| int byte = 0xFF; |
| av_log(logctx, AV_LOG_DEBUG, "Decoding SEI\n"); |
| |
| while (byte == 0xFF) { |
| if (get_bits_left(gb) < 16 || payload_type > INT_MAX - 255) |
| return AVERROR_INVALIDDATA; |
| byte = get_bits(gb, 8); |
| payload_type += byte; |
| } |
| byte = 0xFF; |
| while (byte == 0xFF) { |
| if (get_bits_left(gb) < 8 + 8LL*payload_size) |
| return AVERROR_INVALIDDATA; |
| byte = get_bits(gb, 8); |
| payload_size += byte; |
| } |
| if (nal_unit_type == HEVC_NAL_SEI_PREFIX) { |
| return decode_nal_sei_prefix(gb, logctx, s, ps, payload_type, payload_size); |
| } else { /* nal_unit_type == NAL_SEI_SUFFIX */ |
| return decode_nal_sei_suffix(gb, logctx, s, payload_type, payload_size); |
| } |
| } |
| |
| static int more_rbsp_data(GetBitContext *gb) |
| { |
| return get_bits_left(gb) > 0 && show_bits(gb, 8) != 0x80; |
| } |
| |
| int ff_hevc_decode_nal_sei(GetBitContext *gb, void *logctx, HEVCSEI *s, |
| const HEVCParamSets *ps, int type) |
| { |
| int ret; |
| |
| do { |
| ret = decode_nal_sei_message(gb, logctx, s, ps, type); |
| if (ret < 0) |
| return ret; |
| } while (more_rbsp_data(gb)); |
| return 1; |
| } |
| |
| void ff_hevc_reset_sei(HEVCSEI *s) |
| { |
| av_buffer_unref(&s->a53_caption.buf_ref); |
| |
| for (int i = 0; i < s->unregistered.nb_buf_ref; i++) |
| av_buffer_unref(&s->unregistered.buf_ref[i]); |
| s->unregistered.nb_buf_ref = 0; |
| av_freep(&s->unregistered.buf_ref); |
| av_buffer_unref(&s->dynamic_hdr_plus.info); |
| } |
