public override IRasterBand[] GetDefaultBands()
{
if (_matchedBandProviderDef == null || _matchedBandProviderDef.DefaultBandDatasetDefs == null || _matchedBandProviderDef.DefaultBandDatasetDefs.Count == 0)
{
return(null);
}
IBandNameParser bandNameParser = new DefaultBandNameParser();
using (Hdf4Operator hdf4 = new Hdf4Operator(_provider.fileName))
{
List <IRasterBand> rasterBands = new List <IRasterBand>();
foreach (DefaultBandDatasetDef dsdef in _matchedBandProviderDef.DefaultBandDatasetDefs)
{
string bandNos = hdf4.GetAttributeValue(dsdef.Name, dsdef.BandNoAttribute);
BandName[] bNames = bandNameParser.Parse(bandNos);
Dataset ds = Gdal.Open(ToDatasetFullName(dsdef.Name), _access);
IRasterBand[] rBands = ReadBandsFromDataset(ds, _provider);
rasterBands.AddRange(rBands);
for (int i = 0; i < rBands.Length; i++)
{
rBands[i].Description = bNames[i].Name;
rBands[i].BandNo = bNames[i].Index;
}
}
rasterBands.Sort();
return(rasterBands.Count > 0 ? rasterBands.ToArray() : null);
}
}
private string TryGetDayOrnight(Hdf4Operator hdf)
{
string dayornight = hdf.GetAttributeValue("DAYNIGHTFLAG");
if (string.IsNullOrWhiteSpace(dayornight))
{
return(null);
}
dayornight = dayornight.Trim();
string up = dayornight.ToUpper();
if (up == "DAY" || up == "D")
{
return("Day");
}
else if (up == "NIGHT" || up == "N")
{
return("Night");
}
else if (up == "BOTH")
{
return("Night");
}
else
{
return(dayornight);//默认为白天
}
}
private void TryGetBandProviderDefinition(string fname, Dictionary <string, string> subdatasets)
{
List <string> datasetNames = null;
if (subdatasets != null)
{
datasetNames = GetDatasetNames(subdatasets);
}
BandProviderDef[] bandProviderDefs = null;
//Console.WriteLine(this.GetType().Assembly.Location);
string configfile = Path.Combine(Path.GetDirectoryName(this.GetType().Assembly.Location), "GeoDo.RSS.DF.GDAL.H4BandPrd.xml");
using (H4BandProviderXmlParser xml = new H4BandProviderXmlParser(configfile))
{
bandProviderDefs = xml.GetBandProviderDefs();
}
if (bandProviderDefs == null)
{
return;
}
string dayornight = "";
using (Hdf4Operator hdf = new Hdf4Operator(fname))
{
foreach (BandProviderDef prddef in bandProviderDefs)
{
bool isMatched = true;
if (datasetNames != null)
{
foreach (DefaultBandDatasetDef bandDef in prddef.DefaultBandDatasetDefs)
{
if (!datasetNames.Contains(bandDef.Name))
{
isMatched = false;
break;
}
}
if (!isMatched)
{
continue;
}
}
foreach (IdentifyAttDef id in prddef.IdentifyAttDefs)
{
string attvalue = hdf.GetAttributeValue(id.Name);
if (attvalue != id.Value)
{
isMatched = false;
break;
}
}
//增加对网站下载MODIS数据的支持，数据未在属性中定义卫星、传感器信息
if (!isMatched)
{
DataIdentify di = DataIdentifyMatcher.Match(fname);
if (di != null && !string.IsNullOrEmpty(di.Satellite))
{
foreach (IdentifyAttDef id in prddef.IdentifyAttDefs)
{
if (di.Satellite.ToUpper() == id.Value.ToUpper())
{
isMatched = true;
break;
}
}
}
}
if (isMatched)
{
_matchedBandProviderDef = prddef;
break;
}
}
dayornight = TryGetDayOrnight(hdf);
}
if (_matchedBandProviderDef != null)
{
_dataIdentify = new DataIdentify(_matchedBandProviderDef.Satellite, _matchedBandProviderDef.Sensor);
_dataIdentify.IsOrbit = true;
TrySetIdentifyByName(fname);
TryGetOrbitDirection(dayornight, _matchedBandProviderDef.Satellite);
}
}