private bool GetKeyProc(IntPtr descriptor, ref uint key, ref uint type, ref int flags)
{
#if DEBUG
DebugUtils.Ping(DebugFlags.DescriptorParameters, string.Empty);
#endif
if (descriptor != IntPtr.Zero)
{
ReadDescriptorState state = readDescriptors[descriptor];
if (state.keyIndex >= state.keyCount)
{
return(false);
}
state.currentKey = key = state.keys[state.keyIndex];
state.keyIndex++;
// When a plug-in expects specific keys to be returned this method is documented
// to set each key it finds to the null descriptor type before returning it to the plug-in.
// The plug-in can use this information to determine if any required keys are missing.
if (state.expectedKeys != IntPtr.Zero)
{
int offset;
if (state.expectedKeyOffsets.TryGetValue(key, out offset))
{
Marshal.WriteInt32(state.expectedKeys, offset, unchecked ((int)DescriptorTypes.Null));
}
}
AETEValue item = state.items[key];
try
{
// If the value is a sub-descriptor it must be retrieved with GetObjectProc.
if (item.Value is Dictionary <uint, AETEValue> )
{
type = DescriptorTypes.Object;
}
else
{
type = item.Type;
}
}
catch (NullReferenceException)
{
}
try
{
flags = item.Flags;
}
catch (NullReferenceException)
{
}
return(true);
}
return(false);
}
private short GetPinnedFloatProc(IntPtr descriptor, ref double min, ref double max, ref double floatNumber)
{
ReadDescriptorState state = readDescriptors[descriptor];
#if DEBUG
DebugUtils.Ping(DebugFlags.DescriptorParameters, string.Format("key: 0x{0:X4}", state.currentKey));
#endif
short descErr = PSError.noErr;
AETEValue item = state.items[state.currentKey];
double amount = (double)item.Value;
if (amount < min)
{
amount = min;
descErr = PSError.coercedParamErr;
state.lastReadError = descErr;
}
else if (amount > max)
{
amount = max;
descErr = PSError.coercedParamErr;
state.lastReadError = descErr;
}
floatNumber = amount;
return(descErr);
}
private short GetCountProc(IntPtr descriptor, ref uint count)
{
ReadDescriptorState state = readDescriptors[descriptor];
#if DEBUG
DebugUtils.Ping(DebugFlags.DescriptorParameters, string.Format("key: 0x{0:X4}", state.currentKey));
#endif
count = (uint)state.items.Count;
return(PSError.noErr);
}
private short GetSimpleReferenceProc(IntPtr descriptor, ref PIDescriptorSimpleReference data)
{
ReadDescriptorState state = readDescriptors[descriptor];
#if DEBUG
DebugUtils.Ping(DebugFlags.DescriptorParameters, string.Format("key: 0x{0:X4}", state.currentKey));
#endif
AETEValue item = state.items[state.currentKey];
data = (PIDescriptorSimpleReference)item.Value;
return(PSError.noErr);
}
private short GetClassProc(IntPtr descriptor, ref uint type)
{
ReadDescriptorState state = readDescriptors[descriptor];
#if DEBUG
DebugUtils.Ping(DebugFlags.DescriptorParameters, string.Format("key: 0x{0:X4}", state.currentKey));
#endif
AETEValue item = state.items[state.currentKey];
type = (uint)item.Value;
return(PSError.noErr);
}
private short GetStringProc(IntPtr descriptor, IntPtr data)
{
ReadDescriptorState state = readDescriptors[descriptor];
#if DEBUG
DebugUtils.Ping(DebugFlags.DescriptorParameters, string.Format("key: 0x{0:X4}", state.currentKey));
#endif
AETEValue item = state.items[state.currentKey];
int size = item.Size;
Marshal.WriteByte(data, (byte)size);
Marshal.Copy((byte[])item.Value, 0, new IntPtr(data.ToInt64() + 1L), size);
return(PSError.noErr);
}
private short GetObjectProc(IntPtr descriptor, ref uint retType, ref IntPtr descriptorHandle)
{
ReadDescriptorState state = readDescriptors[descriptor];
#if DEBUG
DebugUtils.Ping(DebugFlags.DescriptorParameters, string.Format("key: 0x{0:X4}", state.currentKey));
#endif
AETEValue item = state.items[state.currentKey];
uint type = item.Type;
try
{
retType = type;
}
catch (NullReferenceException)
{
// ignore it
}
Dictionary <uint, AETEValue> value = item.Value as Dictionary <uint, AETEValue>;
if (value != null)
{
descriptorHandle = HandleSuite.Instance.NewHandle(0); // assign a zero byte handle to allow it to work correctly in the OpenReadDescriptorProc().
if (descriptorHandle == IntPtr.Zero)
{
state.lastReadError = PSError.memFullErr;
return(PSError.memFullErr);
}
descriptorHandles.Add(descriptorHandle, value);
}
else
{
state.lastReadError = PSError.paramErr;
return(PSError.paramErr);
}
return(PSError.noErr);
}
private short GetAliasProc(IntPtr descriptor, ref IntPtr data)
{
ReadDescriptorState state = readDescriptors[descriptor];
#if DEBUG
DebugUtils.Ping(DebugFlags.DescriptorParameters, string.Format("key: 0x{0:X4}", state.currentKey));
#endif
AETEValue item = state.items[state.currentKey];
int size = item.Size;
data = HandleSuite.Instance.NewHandle(size);
if (data == IntPtr.Zero)
{
state.lastReadError = PSError.memFullErr;
return(PSError.memFullErr);
}
Marshal.Copy((byte[])item.Value, 0, HandleSuite.Instance.LockHandle(data, 0), size);
HandleSuite.Instance.UnlockHandle(data);
return(PSError.noErr);
}
private short GetUnitFloatProc(IntPtr descriptor, ref uint unit, ref double data)
{
ReadDescriptorState state = readDescriptors[descriptor];
#if DEBUG
DebugUtils.Ping(DebugFlags.DescriptorParameters, string.Format("key: 0x{0:X4}", state.currentKey));
#endif
AETEValue item = state.items[state.currentKey];
UnitFloat unitFloat = (UnitFloat)item.Value;
try
{
unit = unitFloat.Unit;
}
catch (NullReferenceException)
{
}
data = unitFloat.Value;
return(PSError.noErr);
}
