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);
}
