| 131 | } |
| 132 | |
| 133 | static inline int decode_vui_parameters(GetBitContext *gb, void *logctx, |
| 134 | SPS *sps) |
| 135 | { |
| 136 | ff_h2645_decode_common_vui_params(gb, &sps->vui, logctx); |
| 137 | |
| 138 | if (show_bits1(gb) && get_bits_left(gb) < 10) { |
| 139 | av_log(logctx, AV_LOG_WARNING, "Truncated VUI (%d)\n", get_bits_left(gb)); |
| 140 | return 0; |
| 141 | } |
| 142 | |
| 143 | sps->timing_info_present_flag = get_bits1(gb); |
| 144 | if (sps->timing_info_present_flag) { |
| 145 | unsigned num_units_in_tick = get_bits_long(gb, 32); |
| 146 | unsigned time_scale = get_bits_long(gb, 32); |
| 147 | if (!num_units_in_tick || !time_scale) { |
| 148 | av_log(logctx, AV_LOG_ERROR, |
| 149 | "time_scale/num_units_in_tick invalid or unsupported (%u/%u)\n", |
| 150 | time_scale, num_units_in_tick); |
| 151 | sps->timing_info_present_flag = 0; |
| 152 | } else { |
| 153 | sps->num_units_in_tick = num_units_in_tick; |
| 154 | sps->time_scale = time_scale; |
| 155 | } |
| 156 | sps->fixed_frame_rate_flag = get_bits1(gb); |
| 157 | } |
| 158 | |
| 159 | sps->nal_hrd_parameters_present_flag = get_bits1(gb); |
| 160 | if (sps->nal_hrd_parameters_present_flag) |
| 161 | if (decode_hrd_parameters(gb, logctx, sps) < 0) |
| 162 | return AVERROR_INVALIDDATA; |
| 163 | sps->vcl_hrd_parameters_present_flag = get_bits1(gb); |
| 164 | if (sps->vcl_hrd_parameters_present_flag) |
| 165 | if (decode_hrd_parameters(gb, logctx, sps) < 0) |
| 166 | return AVERROR_INVALIDDATA; |
| 167 | if (sps->nal_hrd_parameters_present_flag || |
| 168 | sps->vcl_hrd_parameters_present_flag) |
| 169 | get_bits1(gb); /* low_delay_hrd_flag */ |
| 170 | sps->pic_struct_present_flag = get_bits1(gb); |
| 171 | if (!get_bits_left(gb)) |
| 172 | return 0; |
| 173 | sps->bitstream_restriction_flag = get_bits1(gb); |
| 174 | if (sps->bitstream_restriction_flag) { |
| 175 | get_bits1(gb); /* motion_vectors_over_pic_boundaries_flag */ |
| 176 | get_ue_golomb_31(gb); /* max_bytes_per_pic_denom */ |
| 177 | get_ue_golomb_31(gb); /* max_bits_per_mb_denom */ |
| 178 | get_ue_golomb_31(gb); /* log2_max_mv_length_horizontal */ |
| 179 | get_ue_golomb_31(gb); /* log2_max_mv_length_vertical */ |
| 180 | sps->num_reorder_frames = get_ue_golomb_31(gb); |
| 181 | sps->max_dec_frame_buffering = get_ue_golomb_31(gb); |
| 182 | |
| 183 | if (get_bits_left(gb) < 0) { |
| 184 | sps->num_reorder_frames = 0; |
| 185 | sps->bitstream_restriction_flag = 0; |
| 186 | } |
| 187 | |
| 188 | if (sps->num_reorder_frames > 16U |
| 189 | /* max_dec_frame_buffering || max_dec_frame_buffering > 16 */) { |
| 190 | av_log(logctx, AV_LOG_ERROR, |
no test coverage detected