public override bool Parse(QtParser parser)
{
if (!base.Parse(parser))
{
return(false);
}
// This atom is not flagged a full atom to be able to parse the
// version byte over here. To preserve memory,
// the version byte is not made available in QtAtom.
byte version = parser.GetByte(QtAtom.Attribute.Version);
ParseFlags(parser);
if (version == 1)
{
parser.GetLongDateTime(Attribute.CreationTime, "{0:F}");
parser.GetLongDateTime(Attribute.ModificationTime, "{0:F}");
parser.GetUInt(Attribute.TimeScale);
parser.GetULong(Attribute.Duration);
}
else // version == 0
{
parser.GetDateTime(Attribute.CreationTime, "{0:F}");
parser.GetDateTime(Attribute.ModificationTime, "{0:F}");
parser.GetUInt(Attribute.TimeScale);
parser.GetUInt(Attribute.Duration);
}
parser.GetFixed16_16(Attribute.PreferredRate);
parser.GetFixed8_8(Attribute.PreferredVolume);
parser.GetUShort(Attribute.Reserved);
parser.GetUInt(Attribute.Reserved);
parser.GetUInt(Attribute.Reserved);
Matrix matrix = parser.GetMatrix(Attribute.MatrixStructure);
// Matrix check from From ISO_IEC_15444-12_2005 Base Media File Format
parser.CheckAttribute(Attribute.MatrixStructure, matrix.U == 0.0, false);
parser.CheckAttribute(Attribute.MatrixStructure, matrix.V == 0.0, false);
parser.CheckAttribute(Attribute.MatrixStructure, matrix.W == 1.0, false);
parser.GetUInt(Attribute.PreviewTime);
parser.GetUInt(Attribute.PreviewDuration);
parser.GetUInt(Attribute.PosterTime);
parser.GetUInt(Attribute.SelectionTime);
parser.GetUInt(Attribute.SelectionDuration);
parser.GetUInt(Attribute.CurrentTime);
uint nextTrackID = parser.GetUInt(Attribute.NextTrackID);
parser.CheckAttribute(Attribute.NextTrackID, nextTrackID != 0, false);
return(this.Valid);
}
public override bool Parse(QtParser parser)
{
if (!base.Parse(parser))
{
return(false);
}
double balance = parser.GetFixed8_8(Attribute.Balance);
parser.CheckAttribute(Attribute.Balance, balance >= -1.0 && balance <= 1.0);
short reserved = parser.GetShort(Attribute.Reserved);
parser.CheckAttribute(Attribute.Reserved, reserved == 0);
return(this.Valid);
}
public override bool Parse(QtParser parser)
{
if (!base.Parse(parser))
{
return(false);
}
if (!CheckComponentSubType(ComponentSubType.vide))
{
Valid = false;
return(Valid);
}
// Video specific
parser.GetUShort(Attribute.Version);
ushort revisionLevel = parser.GetUShort(Attribute.RevisionLevel);
parser.CheckAttribute(Attribute.RevisionLevel, revisionLevel == 0, false);
parser.GetFourCC(Attribute.Vendor);
int temporalQuality = parser.GetInt(Attribute.TemporalQuality);
parser.CheckAttribute(Attribute.TemporalQuality, (temporalQuality >= 0 && temporalQuality <= 1023), false);
int spatialQuality = parser.GetInt(Attribute.SpatialQuality);
parser.CheckAttribute(Attribute.SpatialQuality, (spatialQuality >= 0 && spatialQuality <= 1024), false);
parser.GetUShort(Attribute.Width);
parser.GetUShort(Attribute.Height);
parser.GetFixed16_16(Attribute.HorizontalResolution);
parser.GetFixed16_16(Attribute.VerticalResolution);
int dataSize = parser.GetInt(Attribute.DataSize);
parser.CheckAttribute(Attribute.DataSize, dataSize == 0, false);
parser.GetUShort(Attribute.FrameCount);
parser.GetFixedLengthString(Attribute.CompressorName, 32);
parser.GetShort(Attribute.Depth);
short colorTableId = parser.GetShort(Attribute.ColorTableId);
// If the color table ID is set to 0, a color table is contained within the sample description itself.
// The color table immediately follows the color table ID field in the sample description.
if (colorTableId == 0)
{
// TODO
}
return(Valid);
}
public override bool Parse(QtParser parser)
{
if (!base.Parse(parser))
{
return(false);
}
uint componentType = parser.GetFourCC(Attribute.ComponentType);
// Component type should be 'dhlr' or 'mhlr' according to QuickTime specs and 0 according to MP4 spec
parser.CheckAttribute(Attribute.ComponentType, (componentType == (uint)ComponentType.dhlr || componentType == (uint)ComponentType.mhlr || componentType == 0), false);
if (componentType == 0) // Labels names from MP4 spec
{
ComponentSubType = (ComponentSubType)parser.GetFourCC(Attribute.HandlerType);
parser.GetUInt(Attribute.Reserved);
parser.GetUInt(Attribute.Reserved);
parser.GetUInt(Attribute.Reserved);
// Note: For 'MP4' format, the component name may be represented by a single '1'!
if (parser.BytesRemaining > 0)
{
// FIXME: often, the 'ComponentName' is a Pascal string!!
ComponentName = parser.GetCString(Attribute.ComponentName, (uint)(parser.BytesRemaining - 1));
}
}
else // Label names from QuickTime spec
{
ComponentSubType = (ComponentSubType)parser.GetFourCC(Attribute.ComponentSubType);
// From QuickTime File Format Specification: 'Reserved. Set to 0.'
// By finding quicktime files with a value filled in for this value
// it is assumed that 'set to 0' is ment for quicktime file writers.
// Not for file readers. That is why the attribute is not invalided
// when a value != 0 is found.
parser.GetFourCC(Attribute.ComponentManufacturer);
// From QuickTime File Format Specification: 'Reserved. Set to 0.'
// By finding quicktime files with a value filled in for this value
// it is assumed that 'set to 0' is ment for quicktime file writers.
// Not for file readers. That is why the attribute is not invalided
// when a value != 0 is found.
parser.GetInt(Attribute.ComponentFlags);
// From QuickTime File Format Specification: 'Reserved. Set to 0.'
// By finding quicktime files with a value filled in for this value
// it is assumed that 'set to 0' is ment for quicktime file writers.
// Not for file readers. That is why the attribute is not invalided
// when a value != 0 is found.
parser.GetInt(Attribute.ComponentFlagsMask);
if (parser.BytesRemaining > 0)
{
ComponentName = parser.GetPascalString(Attribute.ComponentName, (int)parser.BytesRemaining);
}
}
return(Valid);
}
public override bool Parse(QtParser parser)
{
if (!base.Parse(parser))
{
return(false);
}
uint flags = parser.GetUInt(Attribute.Flags);
parser.CheckAttribute(Attribute.Flags, flags == 0);
parser.GetFourCC(Attribute.ComponentType);
parser.GetFourCC(Attribute.ComponentSubType);
parser.GetFourCC(Attribute.ComponentManufacturer);
uint componentFlags = parser.GetUInt(Attribute.ComponentFlags);
parser.CheckAttribute(Attribute.ComponentFlags, (componentFlags & 0xFF000000) == 0);
parser.GetUInt(Attribute.ComponentFlagsMask);
parser.GetUInt(Attribute.MinimumVersion);
return(this.Valid);
}
public override bool Parse(QtParser parser)
{
if (!base.Parse(parser))
{
return(false);
}
int flags = parser.GetInt(Attribute.Flags);
parser.CheckAttribute(Attribute.Flags, flags == 0);
parser.GetUInt(Attribute.DataRate);
return(this.Valid);
}
public override bool Parse(QtParser parser)
{
if (!base.Parse(parser))
{
return(false);
}
int flags = parser.GetInt(Attribute.Flags);
parser.CheckAttribute(Attribute.Flags, flags == 0);
parser.GetFourCC(Attribute.SoftwarePackage);
parser.GetUInt(Attribute.Version);
parser.GetUInt(Attribute.Mask);
parser.GetUShort(Attribute.CheckType);
return(this.Valid);
}
public override bool Parse(QtParser parser)
{
if (!base.Parse(parser))
{
return(false);
}
if (!CheckComponentSubType(ComponentSubType.soun))
{
this.Valid = false;
return(this.Valid);
}
// Audio specific
ushort version = parser.GetUShort(Attribute.CompressedDataVersion);
ushort revisionLevel = parser.GetUShort(Attribute.RevisionLevel);
parser.CheckAttribute(Attribute.RevisionLevel, revisionLevel == 0);
uint vendor = parser.GetFourCC(Attribute.Vendor);
parser.CheckAttribute(Attribute.Vendor, vendor == 0, false); // Not always true
ushort numberOfChannels = parser.GetUShort(Attribute.NumberOfChannels);
parser.CheckAttribute(Attribute.NumberOfChannels, numberOfChannels == 1 || numberOfChannels == 2, false); // Example with value 6 found
ushort sampleSize = parser.GetUShort(Attribute.SampleSize);
parser.CheckAttribute(Attribute.SampleSize, sampleSize == 8 || sampleSize == 16, false);
short compressionID = parser.GetShort(Attribute.CompressionID);
parser.CheckAttribute(Attribute.CompressionID, compressionID == 0 || compressionID == -1 || compressionID == -2);
ushort packetSize = parser.GetUShort(Attribute.PacketSize);
parser.CheckAttribute(Attribute.PacketSize, packetSize == 0);
parser.GetFixed16_16(Attribute.SampleRate);
if (version == 1)
{
parser.GetUInt(Attribute.SamplePerPacket);
parser.GetUInt(Attribute.BytesPerPacket);
parser.GetUInt(Attribute.BytesPerFrame);
parser.GetUInt(Attribute.BytesPerSample);
}
return(this.Valid);
}
