/// <summary>
/// Load the attribute collection from a recording file (dvr-ms or wtv).
/// </summary>
/// <param name="fileName"></param>
/// <returns>An error message or null if the load succeeds.</returns>
public static string Load(string fileName)
{
if (!File.Exists(fileName))
return ("The recording file ' " + fileName + "' does not exist");
StreamBufferRecordingAttributes recordingAttributes = new StreamBufferRecordingAttributes();
int reply = ((IFileSourceFilter)recordingAttributes).Load(fileName, null);
if (reply != 0)
return ("The attributes cannot be loaded");
int reserved = 0;
short attributeCount;
reply = ((IStreamBufferRecordingAttribute)recordingAttributes).GetAttributeCount(reserved, out attributeCount);
attributes = new Collection<RecordingAttribute>();
for (short index = 0; index < attributeCount; index++)
{
StreamBufferAttrDataType attributeType;
StringBuilder name = null;
byte[] attributeValue = null;
short nameLength = 0;
short valueLength = 0;
reply = ((IStreamBufferRecordingAttribute)recordingAttributes).GetAttributeByIndex(index,
ref reserved,
name,
ref nameLength,
out attributeType,
attributeValue,
ref valueLength);
name = new StringBuilder(nameLength);
attributeValue = new byte[valueLength];
reply = ((IStreamBufferRecordingAttribute)recordingAttributes).GetAttributeByIndex(index,
ref reserved,
name,
ref nameLength,
out attributeType,
attributeValue,
ref valueLength);
if (name != null && name.Length != 0)
{
RecordingAttribute attribute = getAttribute(name, attributeType, attributeValue);
if (attribute != null)
attributes.Add(attribute);
}
}
return (null);
}
/// <summary>
/// Load the attribute collection from a recording file (dvr-ms or wtv).
/// </summary>
/// <param name="fileName"></param>
/// <returns>An error message or null if the load succeeds.</returns>
public static string Load(string fileName)
{
if (!File.Exists(fileName))
{
return("The recording file ' " + fileName + "' does not exist");
}
StreamBufferRecordingAttributes recordingAttributes = new StreamBufferRecordingAttributes();
int reply = ((IFileSourceFilter)recordingAttributes).Load(fileName, null);
if (reply != 0)
{
return("The attributes cannot be loaded");
}
int reserved = 0;
short attributeCount;
reply = ((IStreamBufferRecordingAttribute)recordingAttributes).GetAttributeCount(reserved, out attributeCount);
attributes = new Collection <RecordingAttribute>();
for (short index = 0; index < attributeCount; index++)
{
StreamBufferAttrDataType attributeType;
StringBuilder name = null;
byte[] attributeValue = null;
short nameLength = 0;
short valueLength = 0;
reply = ((IStreamBufferRecordingAttribute)recordingAttributes).GetAttributeByIndex(index,
ref reserved,
name,
ref nameLength,
out attributeType,
attributeValue,
ref valueLength);
name = new StringBuilder(nameLength);
attributeValue = new byte[valueLength];
reply = ((IStreamBufferRecordingAttribute)recordingAttributes).GetAttributeByIndex(index,
ref reserved,
name,
ref nameLength,
out attributeType,
attributeValue,
ref valueLength);
if (name != null && name.Length != 0)
{
RecordingAttribute attribute = getAttribute(name, attributeType, attributeValue);
if (attribute != null)
{
attributes.Add(attribute);
}
}
}
return(null);
}