internal static string GetKeyNameFromPropkey(PortableDeviceApiLib._tagpropertykey propertyKey)
{
foreach (KeyValuePair<string, PortableDeviceApiLib._tagpropertykey> de in _values)
{
if ((propertyKey.pid == de.Value.pid) && (propertyKey.fmtid == de.Value.fmtid))
{
return (string)de.Key;
}
}
return (propertyKey.pid.ToString() + " " + propertyKey.fmtid.ToString());
}
private void uLongIntToPropVariant(ulong value, out PortableDeviceApiLib.tag_inner_PROPVARIANT propvarValue)
{
// We'll use an IPortableDeviceValues object to transform the
// string into a PROPVARIANT
PortableDeviceApiLib.IPortableDeviceValues pValues =
(PortableDeviceApiLib.IPortableDeviceValues)
new PortableDeviceTypesLib.PortableDeviceValuesClass();
// We insert the string value into the IPortableDeviceValues object
// using the SetStringValue method
pValues.SetUnsignedLargeIntegerValue(ref PortableDevicePKeys.WPD_OBJECT_ID, (ulong)value);
// We then extract the string into a PROPVARIANT by using the
// GetValue method
pValues.GetValue(ref PortableDevicePKeys.WPD_OBJECT_ID,
out propvarValue);
}
public static string GetNameFromGuid(PortableDeviceApiLib._tagpropertykey key, PortableDeviceApiLib.tag_inner_PROPVARIANT values)
{
PortableDeviceApiLib.IPortableDeviceValues pValues = (PortableDeviceApiLib.IPortableDeviceValues)new PortableDeviceTypesLib.PortableDeviceValuesClass();
string contentTypeName;
pValues.SetValue(ref key, ref values);
pValues.GetStringValue(ref key, out contentTypeName);
return contentTypeName;
}
private PortableDeviceObject ExtractInformation(PortableDeviceApiLib.IPortableDeviceProperties properties, string objectId)
{
PortableDeviceApiLib.IPortableDeviceKeyCollection keys;
properties.GetSupportedProperties(objectId, out keys);
PortableDeviceApiLib.IPortableDeviceValues values;
properties.GetValues(objectId, keys, out values);
string tmpVal;
string name;
values.GetStringValue(ref PortableDevicePKeys.WPD_OBJECT_NAME, out name);
values.GetStringValue(ref PortableDevicePKeys.WPD_OBJECT_CONTENT_TYPE, out tmpVal);
var guid = new Guid(tmpVal);
string contentType = PortableDeviceHelpers.GetKeyNameFromGuid(guid);
values.GetStringValue(ref PortableDevicePKeys.WPD_OBJECT_FORMAT, out tmpVal);
string formatType = PortableDeviceHelpers.GetKeyNameFromGuid(new Guid(tmpVal));
return Factories.PortableDeviceObjectFactory.Instance.CreateInstance(guid, objectId, name, contentType, formatType);
}
private void Enumerate(ref PortableDeviceApiLib.IPortableDeviceContent pContent, string parentID, PortableDeviceContainerObject node)
{
PortableDeviceApiLib.IPortableDeviceProperties properties;
pContent.Properties(out properties);
PortableDeviceApiLib.IEnumPortableDeviceObjectIDs pEnum;
pContent.EnumObjects(0, parentID, null, out pEnum);
uint cFetched = 0;
PortableDeviceObject current;
do
{
string objectID;
pEnum.Next(1, out objectID, ref cFetched);
if (cFetched > 0)
{
current = this.ExtractInformation(properties, objectID);
node.AddChild(current);
if (current is PortableDeviceContainerObject)
Enumerate(ref pContent, objectID, (PortableDeviceContainerObject)current);
}
} while (cFetched > 0);
}
//delete a file from device
private static void StringToPropVariant(string value,out PortableDeviceApiLib.tag_inner_PROPVARIANT propvarValue)
{
PortableDeviceApiLib.IPortableDeviceValues pValues =
(PortableDeviceApiLib.IPortableDeviceValues)
new PortableDeviceTypesLib.PortableDeviceValuesClass();
var WPD_OBJECT_ID = new _tagpropertykey();
WPD_OBJECT_ID.fmtid =
new Guid(0xEF6B490D, 0x5CD8, 0x437A, 0xAF, 0xFC, 0xDA,
0x8B, 0x60, 0xEE, 0x4A, 0x3C);
WPD_OBJECT_ID.pid = 2;
pValues.SetStringValue(ref WPD_OBJECT_ID, value);
pValues.GetValue(ref WPD_OBJECT_ID, out propvarValue);
}
static bool wpdEnumContent(string strObjectId, PortableDeviceApiLib.IPortableDeviceContent content)
{
if (null == strObjectId)
{
return false;
}
if (null == content)
{
return false;
}
//Console.WriteLine(strObjectId);
bool result = true;
PortableDeviceApiLib.IEnumPortableDeviceObjectIDs enumObj = null;
const uint dwFlags = 0;
const PortableDeviceApiLib.IPortableDeviceValues filter = null;
try
{
content.EnumObjects(dwFlags, strObjectId, filter, out enumObj);
}
catch (System.Exception e)
{
if (e is System.Runtime.InteropServices.COMException)
{
System.Runtime.InteropServices.COMException ex =
(System.Runtime.InteropServices.COMException)e;
Console.WriteLine("EnumObjects, hr={0:X}", (uint)ex.ErrorCode);
}
else
{
Console.WriteLine(e.Message);
}
//Console.WriteLine(e.StackTrace);
return false;
}
if (null == enumObj)
{
return false;
}
string[] strObjectIdArray = new string[MY_FETCH_COUNT];
//string strObjectIdArray = "";
uint nFetched = 0;
do
{
// MY_FETCH_COUNT 1 is allowed. over 2, null reference occured and leak CoTaskMemFree at marshall
System.Diagnostics.Debug.Assert(1 == MY_FETCH_COUNT);
try
{
enumObj.Next(MY_FETCH_COUNT, out strObjectIdArray[0], ref nFetched);
}
catch (System.Exception e)
{
if (e is System.Runtime.InteropServices.COMException)
{
System.Runtime.InteropServices.COMException ex =
(System.Runtime.InteropServices.COMException)e;
Console.WriteLine("enumObj Next, hr={0:X}", (uint)ex.ErrorCode);
}
else
{
Console.WriteLine(e.Message);
}
//Console.WriteLine(e.StackTrace);
result = false;
nFetched = 0;
break;
}
if (0 < nFetched)
{
countContent += nFetched;
for (uint index = 0; index < nFetched; ++index)
{
result = wpdEnumContent(strObjectIdArray[index], content);
if (false == result)
{
break;
}
}
if (false == result)
{
nFetched = 0;
break;
}
}
} while (0 < nFetched);
enumObj = null;
return result;
}
internal DeviceStream(PortableDeviceApiLib.IStream deviceStream)
: this((IStream)deviceStream) // This is apparently safe for streams we get back from the portable device lib
{}