static int decode_frame_packing_arrangement(H264Context *h) { h->sei_fpa.frame_packing_arrangement_id = get_ue_golomb(&h->gb); h->sei_fpa.frame_packing_arrangement_cancel_flag = get_bits1(&h->gb); h->sei_frame_packing_present = !h->sei_fpa.frame_packing_arrangement_cancel_flag; if (h->sei_frame_packing_present) { h->sei_fpa.frame_packing_arrangement_type = h->frame_packing_arrangement_type = get_bits(&h->gb, 7); h->sei_fpa.quincunx_sampling_flag = h->quincunx_subsampling = get_bits1(&h->gb); h->sei_fpa.content_interpretation_type = h->content_interpretation_type = get_bits(&h->gb, 6); // the following skips: spatial_flipping_flag, frame0_flipped_flag, // field_views_flag, current_frame_is_frame0_flag, // frame0_self_contained_flag, frame1_self_contained_flag skip_bits(&h->gb, 6); if (!h->quincunx_subsampling && h->frame_packing_arrangement_type != 5) skip_bits(&h->gb, 16); // frame[01]_grid_position_[xy] skip_bits(&h->gb, 8); // frame_packing_arrangement_reserved_byte h->sei_fpa.frame_packing_arrangement_repetition_period = get_ue_golomb(&h->gb) /* frame_packing_arrangement_repetition_period */; } skip_bits1(&h->gb); // frame_packing_arrangement_extension_flag if (h->avctx->debug & FF_DEBUG_PICT_INFO) av_log(h->avctx, AV_LOG_DEBUG, "SEI FPA %d %d %d %d %d %d\n", h->sei_fpa.frame_packing_arrangement_id, h->sei_fpa.frame_packing_arrangement_cancel_flag, h->sei_fpa.frame_packing_arrangement_type, h->sei_fpa.quincunx_sampling_flag, h->sei_fpa.content_interpretation_type, h->sei_fpa.frame_packing_arrangement_repetition_period); return 0; }