public MediaTypeManager()
{
_typesHolder = MediaTypesHolder.Instance;
object comobj = null;
try
{
Type type = Type.GetTypeFromCLSID(Clsid.FilterMapper2, true);
comobj = Activator.CreateInstance(type);
_pMapper = (IFilterMapper2)comobj;
comobj = null;
}
catch
{
}
finally
{
if (comobj != null)
{
while (Marshal.ReleaseComObject(comobj) > 0)
{
}
}
}
}
private void Dispose(bool disposing)
{
if (disposing)
{
if (_pMapper != null)
{
Marshal.FinalReleaseComObject(_pMapper);
_pMapper = null;
}
}
}
/// <summary>
/// Gets a list of DirectShow filter names that accept the passed MediaType/MediaSubType and output the passed MediaType/MediaSubType.
/// </summary>
/// <param name="inputMediaAndSubTypes">Array of MediaType/MediaSubType</param>
/// <param name="outputMediaAndSubTypes">Array of MediaType/MediaSubType</param>
/// <param name="merit"></param>
/// <returns>List of names</returns>
public static List <CodecInfo> GetFilters(Guid[] inputMediaAndSubTypes, Guid[] outputMediaAndSubTypes, Merit merit)
{
List <CodecInfo> filters = new List <CodecInfo>();
IEnumMoniker enumMoniker = null;
IMoniker[] moniker = new IMoniker[1];
IFilterMapper2 mapper = (IFilterMapper2) new FilterMapper2();
try
{
mapper.EnumMatchingFilters(
out enumMoniker,
0,
true,
merit,
true,
inputMediaAndSubTypes.Length,
inputMediaAndSubTypes,
null,
null,
false,
true,
outputMediaAndSubTypes.Length,
outputMediaAndSubTypes,
null,
null);
do
{
try { enumMoniker.Next(1, moniker, IntPtr.Zero); }
catch { }
if ((moniker[0] == null))
{
break;
}
string filterName = FilterGraphTools.GetFriendlyName(moniker[0]);
Guid filterClassId = FilterGraphTools.GetCLSID(moniker[0]);
CodecInfo codecInfo = new CodecInfo(filterName, filterClassId);
filters.Add(codecInfo);
FilterGraphTools.TryRelease(ref moniker[0]);
} while (true);
filters.Sort();
return(filters);
}
finally
{
FilterGraphTools.TryRelease(ref enumMoniker);
FilterGraphTools.TryRelease(ref mapper);
}
}
public static ArrayList GetFilters(Guid[] mediaType, Guid[] mediaSubType, Merit merit)
{
ArrayList filters = new ArrayList();
IEnumMoniker enumMoniker = null;
IMoniker[] moniker = new IMoniker[1];
IFilterMapper2 mapper = (IFilterMapper2) new FilterMapper2();
Guid[] types = new Guid[mediaType.Length * 2];
for (int i = 0; i < mediaType.Length; i++)
{
types[i * 2] = mediaType[i];
types[i * 2 + 1] = mediaSubType[i];
}
if (mapper != null)
{
int hResult = mapper.EnumMatchingFilters(
out enumMoniker,
0,
true,
merit,
true,
mediaType.Length,
types,
null,
null,
false,
true,
0,
new Guid[0],
null,
null);
IntPtr fetched = IntPtr.Zero;
do
{
hResult = enumMoniker.Next(1, moniker, fetched);
if ((moniker[0] == null))
{
break;
}
string filterName = DirectShowUtil.GetFriendlyName(moniker[0]);
filters.Add(filterName);
moniker[0] = null;
} while (true);
}
return(filters);
}
private void MatchingFiltersForm_Load(object sender, EventArgs e)
{
List <Guid> guids = new List <Guid>();
try {
if (pin.Connection != null)
{
AMMediaType mt = new AMMediaType();
pin.IPin.ConnectionMediaType(mt);
guids.Add(mt.majorType);
guids.Add(mt.subType);
DsUtils.FreeAMMediaType(mt);
}
else
{
IEnumMediaTypes mtenum;
if (pin.IPin.EnumMediaTypes(out mtenum) >= 0)
{
AMMediaType[] mts = new AMMediaType[1];
IntPtr fetched = Marshal.AllocHGlobal(4);
while (mtenum.Next(1, mts, fetched) == 0)
{
guids.Add(mts[0].majorType);
guids.Add(mts[0].subType);
DsUtils.FreeAMMediaType(mts[0]);
}
Marshal.FreeHGlobal(fetched);
}
}
IFilterMapper2 fm = (IFilterMapper2) new FilterMapper2();
IEnumMoniker emon, emon_rend; //non-renderers, renderers
int hr = 0;
List <FilterProps> fplist = new List <FilterProps>();
if (pin.Direction == PinDirection.Output)
{
hr = fm.EnumMatchingFilters(out emon, 0, true, Merit.None, true, guids.Count / 2, guids.ToArray(),
null, null, false, false, 0, null, null, null);
DsError.ThrowExceptionForHR(hr);
hr = fm.EnumMatchingFilters(out emon_rend, 0, true, Merit.None, true, guids.Count / 2, guids.ToArray(),
null, null, true, false, 0, null, null, null);
DsError.ThrowExceptionForHR(hr);
fplist.AddRange(Filterz.GetFiltersFromEnum(emon, Guid.Empty));
fplist.AddRange(Filterz.GetFiltersFromEnum(emon_rend, Guid.Empty));
}
else
{
hr = fm.EnumMatchingFilters(out emon, 0, true, Merit.None, false, 0, null, null, null, false,
true, guids.Count / 2, guids.ToArray(), null, null);
DsError.ThrowExceptionForHR(hr);
hr = fm.EnumMatchingFilters(out emon_rend, 0, true, Merit.None, false, 0, null, null, null, true,
true, guids.Count / 2, guids.ToArray(), null, null);
DsError.ThrowExceptionForHR(hr);
fplist.AddRange(Filterz.GetFiltersFromEnum(emon, Guid.Empty));
fplist.AddRange(Filterz.GetFiltersFromEnum(emon_rend, Guid.Empty));
}
//Filterz.BuildFilterTree(emon, treeView, Guid.Empty);
Filterz.FillFilterTree(treeView, fplist);
}
catch (COMException ex)
{
Graph.ShowCOMException(ex, "Can't enumerate matching filters");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Exception caught while enumerating matching filters");
}
}
private void Config()
{
m_fm2 = (IFilterMapper2) new FilterMapper2();
}
public static ArrayList GetFilters(Guid[] mediaType, Guid[] mediaSubType, Merit merit)
{
ArrayList filters = new ArrayList();
IEnumMoniker enumMoniker = null;
IMoniker[] moniker = new IMoniker[1];
IFilterMapper2 mapper = (IFilterMapper2) new FilterMapper2();
Guid[] types = new Guid[mediaType.Length * 2];
for (int i = 0; i < mediaType.Length; i++)
{
types[i * 2] = mediaType[i];
types[i * 2 + 1] = mediaSubType[i];
}
try
{
if (mapper != null)
{
int hResult = mapper.EnumMatchingFilters(
out enumMoniker,
0,
true,
merit,
true,
mediaType.Length,
types,
null,
null,
false,
true,
0,
new Guid[0],
null,
null);
IntPtr fetched = IntPtr.Zero;
do
{
try
{
enumMoniker.Next(1, moniker, IntPtr.Zero);
}
catch
{
}
if ((moniker[0] == null))
{
break;
}
string filterName = DirectShowUtil.GetFriendlyName(moniker[0]);
if (!String.IsNullOrEmpty(filterName))
{
filters.Add(filterName);
}
DirectShowUtil.TryRelease(ref moniker[0]);
} while (true);
}
return(filters);
}
finally
{
DirectShowUtil.ReleaseComObject(enumMoniker);
DirectShowUtil.ReleaseComObject(mapper);
}
}
public static DsDevice[] GetDevicesWithThisInPin(Guid mainType, Guid subType)
{
DsDevice[] devret;
ArrayList devs = new ArrayList();
IFilterMapper2 pMapper = (IFilterMapper2) new FilterMapper2();
Guid[] arrayInTypes = new Guid[2] {
mainType, subType
};
IEnumMoniker pEnum = null;
int hr = pMapper.EnumMatchingFilters(out pEnum,
1, // Reserved.
true, // Use exact match?
(Merit)((int)Merit.DoNotUse + 1), // Minimum merit.
true, // At least one input pin?
1, // Number of major type/subtype pairs for input.
arrayInTypes, // Array of major type/subtype pairs for input.
null, // Input medium.
null, // Input pin category.
false, // Must be a renderer?
true, // At least one output pin?
0, // Number of major type/subtype pairs for output.
null, // Array of major type/subtype pairs for output.
null, // Output medium.
null); // Output pin category.
DsError.ThrowExceptionForHR(hr);
if (hr >= 0 && pEnum != null)
{
try
{
try
{
// Enumerate the monikers.
IMoniker[] pMoniker = new IMoniker[1];
while (pEnum.Next(1, pMoniker, IntPtr.Zero) == 0)
{
try
{
// The devs array now owns this object. Don't
// release it if we are going to be successfully
// returning the devret array
devs.Add(new DsDevice(pMoniker[0]));
}
catch
{
Marshal.ReleaseComObject(pMoniker[0]);
throw;
}
}
}
finally
{
// Clean up.
Marshal.ReleaseComObject(pEnum);
}
// Copy the ArrayList to the DsDevice[]
devret = new DsDevice[devs.Count];
devs.CopyTo(devret);
}
catch
{
foreach (DsDevice d in devs)
{
d.Dispose();
}
throw;
}
}
else
{
devret = new DsDevice[0];
}
Marshal.ReleaseComObject(pMapper);
return(devret);
}
