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);
}
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.GetByte(Attribute.LayerNumber);
parser.GetByte(Attribute.AccurateStatisticsFlag);
parser.GetUShort(Attribute.AvgBitRate);
parser.GetUShort(Attribute.AvgFrameRate);
return(Valid);
}
public override bool Parse(QtParser parser)
{
if (!base.Parse(parser))
{
return(false);
}
uint colorParameterType = parser.GetFourCC(Attribute.ColorParameterType);
parser.CheckAttribute(Attribute.ColorParameterType, colorParameterType == "nclc".To4CC(), false);
parser.GetUShort(Attribute.PrimariesIndex);
parser.GetUShort(Attribute.TransferFunctionIndex);
parser.GetUShort(Attribute.MatrixIndex);
return(Valid);
}
public override bool Parse(QtParser parser)
{
if (!base.Parse(parser))
{
return(false);
}
// Reserved (6x byte)
for (int i = 0; i < 6; i++)
{
parser.GetByte();
}
parser.GetUShort(Attribute.ReferenceIndex);
parser.GetUShort(Attribute.PreDefined1);
parser.GetUShort(Attribute.Reserved1);
return(Valid);
}
// See QuickTime File Format Specification, 2010-08-03, pg.1
private static void ParseTcmiAtom(QtParser parser, uint size)
{
long tcmiPosition = (parser.Position - 4);
parser.AddAttribute(new FormattedAttribute <QtAtom.Attribute, uint>(QtAtom.Attribute.Size, size));
uint type = parser.GetFourCC(QtAtom.Attribute.Type);
parser.CheckAttribute(QtAtom.Attribute.Type, type == Tcmi, false);
parser.GetByte(QtAtom.Attribute.Version);
parser.GetThreeBytes(QtAtom.Attribute.Flags);
parser.GetUShort(Attribute.TextFont);
parser.GetUShort(Attribute.TextFace);
parser.GetUShort(Attribute.TextSize);
parser.GetUShort(Attribute.TcmiReserved);
parser.Parse(new Color(Attribute.TextColor));
parser.Parse(new Color(Attribute.BackgroundColor));
parser.GetPascalString(Attribute.FontName, 0);
parser.CheckAttribute(QtAtom.Attribute.Size, size == (parser.Position - tcmiPosition), false);
}
public override bool Parse(QtParser parser)
{
if (!base.Parse(parser))
{
return(false);
}
int colorTableSeed = parser.GetInt(Attribute.ColorTableSeed);
parser.CheckAttribute(Attribute.ColorTableSeed, colorTableSeed == 0);
ushort colorTableFlags = parser.GetUShort(Attribute.ColorTableFlags);
parser.CheckAttribute(Attribute.ColorTableFlags, colorTableFlags == 0x8000);
uint colorTableSize = parser.GetUShort(Attribute.ColorTableSize);
colorTableSize++; // The color table size is zero-relative; 0 means there is one color in the array
parser.GetTable(Attribute.ColorArray, Attribute.ColorTableSize, colorTableSize, 8, () => new Color(), parser.BytesRemaining);
return(Valid);
}
public override bool Parse(QtParser parser)
{
if (!base.Parse(parser))
{
return(false);
}
ushort regionSize = parser.GetUShort(Attribute.RegionSize);
parser.Parse(new RegionBounderyBox());
parser.CheckAttribute(Attribute.RegionSize, regionSize == parser.BytesRemaining);
if (Valid)
{
parser.GetHexDump(Attribute.ClippingRegionData, regionSize);
}
return(Valid);
}
// for (i=0; i< numOfSequenceParameterSets; i++) {
// unsigned int(16) sequenceParameterSetLength ;
// bit(8*sequenceParameterSetLength) sequenceParameterSetNALUnit;
// }
//
// for (i=0; i< numOfPictureParameterSets; i++) {
// unsigned int(16) pictureParameterSetLength;
// bit(8*pictureParameterSetLength) pictureParameterSetNALUnit;
// }
private static IDataPacket CreateNalUnit(QtParser parser, byte setCount, Attribute attribute)
{
long beginOffset = parser.Position;
int totalSetLength = 0;
for (int i = 0; i < setCount; i++)
{
ushort setLength = parser.GetUShort();
parser.Position += setLength;
totalSetLength += setLength + sizeof(ushort);
}
if (totalSetLength > 0)
{
parser.Position = beginOffset;
parser.GetHexDump <Attribute>(attribute, totalSetLength);
return(parser.GetDataPacket(beginOffset, totalSetLength));
}
return(null);
}
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);
}
