/// <summary>
/// Creates a native HandBrake list from the given managed list of structures.
/// </summary>
/// <typeparam name="T">The type of structures in the list.</typeparam>
/// <param name="list">The managed list to convert.</param>
/// <returns>The converted native list.</returns>
public static NativeList ConvertListBack <T>(List <T> list)
{
NativeList returnList = new NativeList();
int intSize = Marshal.SizeOf(typeof(IntPtr));
IntPtr nativeListInternal = Marshal.AllocHGlobal(list.Count * intSize);
returnList.AllocatedMemory.Add(nativeListInternal);
for (int i = 0; i < list.Count; i++)
{
IntPtr itemPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(T)));
returnList.AllocatedMemory.Add(itemPtr);
Marshal.StructureToPtr(list[i], itemPtr, false);
Marshal.WriteIntPtr(nativeListInternal, i * intSize, itemPtr);
}
hb_list_s nativeListStruct = new hb_list_s
{
items = nativeListInternal,
items_alloc = list.Count,
items_count = list.Count
};
IntPtr nativeListStructPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(hb_list_s)));
Marshal.StructureToPtr(nativeListStruct, nativeListStructPtr, false);
returnList.ListPtr = nativeListStructPtr;
return(returnList);
}
/// <summary>
/// Creates a native HandBrake list from the given managed list of pointers.
/// </summary>
/// <param name="list">The managed list to convert.</param>
/// <returns>The converted native list.</returns>
public static NativeList CreateIntPtrList(List <IntPtr> list)
{
NativeList returnList = new NativeList();
int intSize = Marshal.SizeOf(typeof(IntPtr));
IntPtr nativeListInternal = Marshal.AllocHGlobal(list.Count * intSize);
returnList.AllocatedMemory.Add(nativeListInternal);
for (int i = 0; i < list.Count; i++)
{
Marshal.WriteIntPtr(nativeListInternal, i * intSize, list[i]);
}
hb_list_s nativeListStruct = new hb_list_s();
nativeListStruct.items = nativeListInternal;
nativeListStruct.items_alloc = list.Count;
nativeListStruct.items_count = list.Count;
IntPtr nativeListStructPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(hb_list_s)));
Marshal.StructureToPtr(nativeListStruct, nativeListStructPtr, false);
returnList.ListPtr = nativeListStructPtr;
return(returnList);
}
/// <summary>
/// Converts the HB list to a managed list of pointers.
/// </summary>
/// <param name="listPtr">The list to convert.</param>
/// <returns>The managed list of pointers.</returns>
public static List <IntPtr> ToIntPtrList(this IntPtr listPtr)
{
var returnList = new List <IntPtr>();
hb_list_s itemList = ReadStructure <hb_list_s>(listPtr);
for (int i = 0; i < itemList.items_count; i++)
{
IntPtr itemPtr = Marshal.ReadIntPtr(itemList.items, i * Marshal.SizeOf(typeof(IntPtr)));
returnList.Add(itemPtr);
}
return(returnList);
}
/// <summary>
/// Converts the given native HandBrake list to a managed list.
/// </summary>
/// <typeparam name="T">The type of structure in the list.</typeparam>
/// <param name="listPtr">The pointer to the native list.</param>
/// <returns>The converted managed list.</returns>
public static List <T> ConvertList <T>(IntPtr listPtr)
{
List <T> returnList = new List <T>();
hb_list_s itemList = ReadStructure <hb_list_s>(listPtr);
for (int i = 0; i < itemList.items_count; i++)
{
IntPtr itemPtr = Marshal.ReadIntPtr(itemList.items, i * Marshal.SizeOf(typeof(IntPtr)));
returnList.Add(ReadStructure <T>(itemPtr));
}
return(returnList);
}
/// <summary>
/// Creats a new, empty native HandBrake list.
/// </summary>
/// <param name="capacity">The capacity of the new list.</param>
/// <returns>The new native list.</returns>
public static NativeList CreateNativeList(int capacity)
{
NativeList returnList = new NativeList();
int intSize = Marshal.SizeOf(typeof(IntPtr));
IntPtr nativeListInternal = Marshal.AllocHGlobal(capacity * intSize);
returnList.AllocatedMemory.Add(nativeListInternal);
hb_list_s nativeListStruct = new hb_list_s {
items = nativeListInternal, items_alloc = capacity, items_count = 0
};
IntPtr nativeListStructPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(hb_list_s)));
Marshal.StructureToPtr(nativeListStruct, nativeListStructPtr, false);
returnList.ListPtr = nativeListStructPtr;
return(returnList);
}