public AsfProperties(AsfHeaderObject header, ReadStyle style) : base(style)
{
duration = TimeSpan.Zero;
//codecId = 0;
//channels = 0;
//sampleRate = 0;
//bytesPerSecond = 0;
foreach (AsfObject obj in header.Children)
{
if (obj is AsfFilePropertiesObject)
duration = ((AsfFilePropertiesObject)obj).PlayDuration;
if (obj is AsfStreamPropertiesObject && bytesPerSecond == 0)
{
AsfStreamPropertiesObject stream = (AsfStreamPropertiesObject)obj;
if (!stream.StreamType.Equals(AsfGuid.AsfAudioMedia))
continue;
ByteVector data = stream.TypeSpecificData;
codecId = data.Mid(0, 2).ToShort(false);
channels = data.Mid(2, 2).ToShort(false);
sampleRate = data.Mid(4, 4).ToUInt(false);
bytesPerSecond = data.Mid(8, 4).ToUInt(false);
}
}
}
public AsfProperties(AsfHeaderObject header, ReadStyle style) : base(style)
{
duration = TimeSpan.Zero;
//codecId = 0;
//channels = 0;
//sampleRate = 0;
//bytesPerSecond = 0;
foreach (AsfObject obj in header.Children)
{
if (obj is AsfFilePropertiesObject)
{
duration = ((AsfFilePropertiesObject)obj).PlayDuration;
}
if (obj is AsfStreamPropertiesObject && bytesPerSecond == 0)
{
AsfStreamPropertiesObject stream = (AsfStreamPropertiesObject)obj;
if (!stream.StreamType.Equals(AsfGuid.AsfAudioMedia))
{
continue;
}
ByteVector data = stream.TypeSpecificData;
codecId = data.Mid(0, 2).ToShort(false);
channels = data.Mid(2, 2).ToShort(false);
sampleRate = data.Mid(4, 4).ToUInt(false);
bytesPerSecond = data.Mid(8, 4).ToUInt(false);
}
}
}
private void Read(ReadStyle propertiesStyle)
{
AsfHeaderObject header = new AsfHeaderObject(this, 0);
asfTag = new AsfTag(header);
if (propertiesStyle != ReadStyle.None)
properties = new AsfProperties(header, propertiesStyle);
}
private void Read(ReadStyle propertiesStyle)
{
AsfHeaderObject header = new AsfHeaderObject(this, 0);
asfTag = new AsfTag(header);
if (propertiesStyle != ReadStyle.None)
{
properties = new AsfProperties(header, propertiesStyle);
}
}
public AsfTag(AsfHeaderObject header) : base()
{
description = new AsfContentDescriptionObject();
extDescription = new AsfExtendedContentDescriptionObject();
foreach (AsfObject child in header.Children)
{
if (child is AsfContentDescriptionObject)
description = (AsfContentDescriptionObject)child;
if (child is AsfExtendedContentDescriptionObject)
extDescription = (AsfExtendedContentDescriptionObject)child;
}
}
public override void Save()
{
if (IsReadOnly)
{
throw new ReadOnlyException();
}
Mode = FileAccessMode.Write;
AsfHeaderObject header = new AsfHeaderObject(this, 0);
header.AddUniqueObject(asfTag.ContentDescriptionObject);
header.AddUniqueObject(asfTag.ExtendedContentDescriptionObject);
Insert(header.Render(), 0, header.OriginalSize);
Mode = FileAccessMode.Closed;
}
public AsfTag(AsfHeaderObject header) : base()
{
description = new AsfContentDescriptionObject();
extDescription = new AsfExtendedContentDescriptionObject();
foreach (AsfObject child in header.Children)
{
if (child is AsfContentDescriptionObject)
{
description = (AsfContentDescriptionObject)child;
}
if (child is AsfExtendedContentDescriptionObject)
{
extDescription = (AsfExtendedContentDescriptionObject)child;
}
}
}
public override void Save()
{
if (IsReadOnly)
throw new ReadOnlyException();
Mode = FileAccessMode.Write;
AsfHeaderObject header = new AsfHeaderObject(this, 0);
header.AddUniqueObject(asfTag.ContentDescriptionObject);
header.AddUniqueObject(asfTag.ExtendedContentDescriptionObject);
Insert(header.Render(), 0, header.OriginalSize);
Mode = FileAccessMode.Closed;
}
public AsfProperties(AsfHeaderObject header) : this(header, ReadStyle.Average)
{
}
public AsfProperties(AsfHeaderObject header) : this(header, ReadStyle.Average)
{
}
