public override bool Parse(QtParser parser) { uint maxUnparsedBytes = (uint)QtDetector.Configurable[QtDetector.ConfigurationKey.FileTypeMaxUnparsedBytes]; if (!base.Parse(parser) || parser.BytesRemaining > maxUnparsedBytes) { return(false); } Brand majorBrand = (Brand)parser.GetFourCC(Attribute.MajorBrand); parser.GetUInt(Attribute.MinorVersion, "{0:X8}"); // Gets the list of compatible brands StringBuilder sb = new StringBuilder(); List <Brand> compatibleBrands = new List <Brand>(); // Remaining data of the atom are the compatible brands while (parser.BytesRemaining >= 4) { uint compatibleBrand = parser.GetUInt(); if (compatibleBrand != 0) { if (sb.Length > 0) { sb.Append(", "); } // Add 4CC sb.Append(compatibleBrand.ToString4CC()); compatibleBrands.Add((Brand)compatibleBrand); } } // Create attribute with comma separated list of compatible brands parser.AddAttribute(new FormattedAttribute <Attribute, string>(Attribute.CompatibleBrands, sb.ToString())); _dataFormat = GetDataFormat((Brand)majorBrand); if (DataFormat == CodecID.Unknown) { // Scan compatible brands for known brand foreach (Brand brand in compatibleBrands) { _dataFormat = GetDataFormat(brand); if (DataFormat != CodecID.Unknown) { break; } } } // Unsupported formats, such as JPEG-2000, should be ignored parser.CheckAttribute(Attribute.MajorBrand, DataFormat != CodecID.Unknown); // We expect the major brand in the list of compatible brands parser.CheckAttribute(Attribute.CompatibleBrands, compatibleBrands.Contains(majorBrand), false); return(this.Valid); }
public override bool Parse(QtParser parser) { if (!base.Parse(parser)) { return(false); } parser.GetUInt(Attribute.Version, "{0:X8}"); // TODO: the sequence of descriptors is taken (mostly) from ffmpeg // TODO: verify that this is the actual sequence seen in (all) 3GPP files BaseDescriptor descriptor = ReadDescriptor(parser); if (descriptor.Tag == DescriptorClassTag.ES_DescrTag) { parser.GetUShort(); // ID parser.GetByte(); // priority } else { parser.GetUShort(); // ID } descriptor = ReadDescriptor(parser); if (descriptor.Tag == DescriptorClassTag.DecoderConfigDescrTag) { parser.GetByte(Attribute.ObjectTypeIndication); // 0x20 Visual ISO/IEC 14496-2 parser.GetByte(Attribute.StreamType); parser.GetThreeBytes(Attribute.BufferSizeDB); // 3 bytes parser.GetUInt(Attribute.MaxBitrate); parser.GetUInt(Attribute.AvgBitrate); descriptor = ReadDescriptor(parser); if ((parser.Position + descriptor.Length) > parser.Length) { return(false); } if (descriptor.Tag == DescriptorClassTag.DecSpecificInfoTag) { // Extra data can be empty (0 bytes) if (descriptor.Length > 0) { ExtraData = parser.GetDataPacket(parser.Position, descriptor.Length); } Attributes.Add(new FormattedAttribute <Attribute, long>(Attribute.DecSpecificInfoSize, descriptor.Length)); } parser.Position += Math.Min(descriptor.Length, parser.Length - parser.Position); } return(this.Valid); }
public override bool Parse(QtParser parser) { if (!base.Parse(parser)) { return(false); } parser.GetUShort(Attribute.SubSequenceIdentifer); parser.GetByte(Attribute.LayerNumber); byte flags = parser.GetByte(); bool durationFlag = (flags & 0x80) == 0x80; bool avgRateFlag = (flags & 0x40) == 0x40; byte reserved = (byte)(flags & 0x3F); parser.AddAttribute(new FormattedAttribute <Attribute, bool>(Attribute.DurationFlag, durationFlag)); parser.AddAttribute(new FormattedAttribute <Attribute, bool>(Attribute.AvgRateFlag, avgRateFlag)); parser.AddAttribute(new FormattedAttribute <Attribute, byte>(Attribute.Reserved, reserved)); parser.CheckAttribute(Attribute.Reserved, reserved == 0, false); if (durationFlag) { parser.GetUInt(Attribute.Duration); } if (avgRateFlag) { parser.GetByte(Attribute.AccurateStatisticsFlag); parser.GetUShort(Attribute.AvgBitRate); parser.GetUShort(Attribute.AvgFrameRate); } parser.GetTable(Attribute.DependencyInfo, Attribute.NumReferences, NumberOfEntriesType.Byte, 32, () => new DependencyInfo(), parser.BytesRemaining); return(Valid); }
public override bool Parse(QtParser parser) { if (!base.Parse(parser)) { return(false); } uint sampleSize = parser.GetUInt(Attribute.SampleSize); if (sampleSize == 0) // If the sample size is 0 than only read the number of samples in the track { parser.GetTable(Attribute.SampleSizeTable, Attribute.NumberOfEntries, NumberOfEntriesType.UInt, 4, () => new SampleSizeTableAttribute(), parser.BytesRemaining); } else { parser.GetUInt(Attribute.SampleCount); // Read the number on samples in the track } return(Valid); }
public override bool Parse(QtParser parser) { if (!base.Parse(parser)) { return(false); } if (!CheckComponentSubType(ComponentSubType.tmcd)) { Valid = false; return(Valid); } uint reserved = parser.GetUInt(); if (reserved == 0) { parser.AddAttribute(new FormattedAttribute <QtSampleDescriptionAtom.Attribute, int>(QtSampleDescriptionAtom.Attribute.Reserved, (int)reserved)); parser.GetShort(QtSampleDescriptionAtom.Attribute.Reserved); parser.GetShort(QtSampleDescriptionAtom.Attribute.DataReferenceIndex); reserved = parser.GetUInt(Attribute.Reserved1); parser.CheckAttribute(Attribute.Reserved1, reserved == 0, true); parser.Parse(new Flags()); parser.GetInt(Attribute.TimeScale); parser.GetInt(Attribute.FrameDuration); parser.GetByte(Attribute.NumberOfFrames); reserved = parser.GetThreeBytes(Attribute.Reserved2); parser.CheckAttribute(Attribute.Reserved2, reserved == 0, false); if (parser.BytesRemaining > 0) { parser.GetHexDump(QtAtom.Attribute.AdditionalData, (int)parser.BytesRemaining); } } else { ParseTcmiAtom(parser, reserved); } return(Valid); }
public override bool Parse(QtParser parser) { if (!base.Parse(parser)) { return(false); } parser.GetUInt(Attribute.GroupingType); parser.GetTable(Attribute.SampleToGroupTable, Attribute.EntryCount, NumberOfEntriesType.UInt, 8, () => new SampleToGroupEntry(), parser.BytesRemaining); return(Valid); }
public override bool Parse(QtParser parser) { if (!base.Parse(parser)) { return(false); } parser.GetDateTime(Attribute.CreationTime, "{0:F}"); parser.GetDateTime(Attribute.ModificationTime, "{0:F}"); TrackID = parser.GetUInt(Attribute.TrackID); parser.GetUInt(Attribute.Reserved1); parser.GetUInt(Attribute.Duration); parser.GetULong(Attribute.Reserved2); parser.GetShort(Attribute.Layer); parser.GetShort(Attribute.AlternateGroup); parser.GetFixed8_8(Attribute.Volume); parser.GetUShort(Attribute.Reserved3); parser.GetMatrix(Attribute.MatrixStructure); parser.GetFixed16_16(Attribute.TrackWidth); parser.GetFixed16_16(Attribute.TrackHeight); return(this.Valid); }
public override bool Parse(QtParser parser) { if (!base.Parse(parser)) { return(false); } parser.GetUInt(Attribute.PreloadStartTime); parser.GetInt(Attribute.PreloadDuration); parser.GetFlags <Attribute, PreloadFlags>(Attribute.PreloadFlags, 4); parser.GetFlags <Attribute, DefaultHints>(Attribute.DefaultHints, 4); return(this.Valid); }
public override bool Parse(QtParser parser) { if (!base.Parse(parser)) { return(false); } uint uncompressedSize = parser.GetUInt(Attribute.UncompressedSize); // TODO: finish decompression method and parse the decompressed movie atom //byte[] compressedData = new byte[parser.BytesRemaining]; //parser.DataReader.Read(compressedData, 0, compressedData.Length); //DecompressZlib(compressedData, uncompressedSize); return(this.Valid); }
public override bool Parse(QtParser parser) { if (!base.Parse(parser)) { return(false); } parser.GetFlags <Attribute, Flag>(Attribute.Flags, 4); uint dataReferenceType = parser.GetFourCC(Attribute.DataReferenceType); int dataReferenceSize = parser.GetInt(Attribute.DataReferenceSize); if (dataReferenceType == (uint)DataReferenceType.alis) { parser.GetUInt(Attribute.DataReference); // TODO test } else if (dataReferenceType == (uint)DataReferenceType.url_) { uint maxUrlLength = (uint)QtDetector.Configurable[QtDetector.ConfigurationKey.ReferenceMovieDataReferenceMaxUrlLength]; parser.GetCString(Attribute.DataReference, maxUrlLength); } return(this.Valid); }