| public ReadBitsToShort ( byte count = 16 ) : short | ||
| count | byte | |
| Результат | short | |
private bool ReadSPSVUI(BitReader spsReader, Variant v)
{
//E.1.1 VUI parameters syntax
//14496-10.pdf 267/280
v["aspect_ratio_info_present_flag"] = spsReader.ReadBool();
if (v["aspect_ratio_info_present_flag"])
{
v["aspect_ratio_idc"] = spsReader.ReadBitsToByte();
if ((byte)v["aspect_ratio_idc"] == 255)
{
v["sar_width"] = (ushort)spsReader.ReadBitsToShort();
v["sar_height"] = (ushort)spsReader.ReadBitsToShort();
}
}
v["overscan_info_present_flag"] = spsReader.ReadBool();
if (v["overscan_info_present_flag"])
v["overscan_appropriate_flag"] = spsReader.ReadBool();
v["video_signal_type_present_flag"] = spsReader.ReadBool();
if (v["video_signal_type_present_flag"])
{
v["video_format"] = spsReader.ReadBitsToByte(3);
v["video_full_range_flag"] = spsReader.ReadBool();
v["colour_description_present_flag"] = spsReader.ReadBool();
if (v["colour_description_present_flag"])
{
v["colour_primaries"] = spsReader.ReadBitsToByte();
v["transfer_characteristics"] = spsReader.ReadBitsToByte();
v["matrix_coefficients"] = spsReader.ReadBitsToByte();
}
}
v["chromloc_info_present_flag"] = spsReader.ReadBool();
if (v["chromloc_info_present_flag"])
{
v["chromsample_loc_type_top_field"] = spsReader.ReadExpGolomb("chromsample_loc_type_top_field");
v["chromsample_loc_type_bottom_field"] = spsReader.ReadExpGolomb("chromsample_loc_type_bottom_field");
}
v["timing_info_present_flag"] = spsReader.ReadBool();
if (v["timing_info_present_flag"])
{
v["num_units_in_tick"] = spsReader.ReadBitsToInt();
v["time_scale"] = spsReader.ReadBitsToInt();
v["fixed_frame_rate_flag"] = spsReader.ReadBool();
}
v["nal_hrd_parameters_present_flag"] = spsReader.ReadBool();
if (v["nal_hrd_parameters_present_flag"])
{
if (!ReadSPSVUIHRD(spsReader, v["nal_hrd"] = Variant.Get()))
{
Logger.FATAL("Unable to read VUIHRD");
return false;
}
}
v["vcl_hrd_parameters_present_flag"] = spsReader.ReadBool();
if (v["vcl_hrd_parameters_present_flag"])
{
if (!ReadSPSVUIHRD(spsReader, v["vcl_hrd"] = Variant.Get()))
{
Logger.FATAL("Unable to read VUIHRD");
return false;
}
}
if (v["nal_hrd_parameters_present_flag"]
|| v["vcl_hrd_parameters_present_flag"])
v["low_delay_hrd_flag"] = spsReader.ReadBool();
v["pic_struct_present_flag"] = spsReader.ReadBool();
v["bitstream_restriction_flag"] = spsReader.ReadBool();
if (v["bitstream_restriction_flag"])
{
v["motion_vectors_over_pic_boundaries_flag"] = spsReader.ReadBool();
v["max_bytes_per_pic_denom"] = spsReader.ReadExpGolomb("max_bytes_per_pic_denom");
v["max_bits_per_mb_denom"] = spsReader.ReadExpGolomb("max_bits_per_mb_denom");
v["log2_max_mv_length_horizontal"] = spsReader.ReadExpGolomb("log2_max_mv_length_horizontal");
v["log2_max_mv_length_vertical"] = spsReader.ReadExpGolomb("log2_max_mv_length_vertical");
v["num_reorder_frames"] = spsReader.ReadExpGolomb("num_reorder_frames");
v["max_dec_frame_buffering"] = spsReader.ReadExpGolomb("max_dec_frame_buffering");
}
return true;
}