public void Unmap(Gst.MapInfo info)
{
IntPtr native_info = GLib.Marshaller.StructureToPtrAlloc(info);
gst_memory_unmap(Handle, native_info);
Marshal.FreeHGlobal(native_info);
}
void InvokeNative(Gst.Memory mem, Gst.MapInfo info)
{
IntPtr native_info = GLib.Marshaller.StructureToPtrAlloc(info);
native_cb(mem == null ? IntPtr.Zero : mem.Handle, native_info);
Marshal.FreeHGlobal(native_info);
}
IntPtr InvokeNative(Gst.Memory mem, Gst.MapInfo info, ulong maxsize)
{
IntPtr native_info = GLib.Marshaller.StructureToPtrAlloc(info);
IntPtr __result = native_cb(mem == null ? IntPtr.Zero : mem.Handle, native_info, new UIntPtr(maxsize));
Marshal.FreeHGlobal(native_info);
return(__result);
}
public bool Map(out Gst.MapInfo info, Gst.MapFlags flags)
{
IntPtr native_info = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(Gst.MapInfo)));
bool raw_ret = gst_memory_map(Handle, native_info, (int)flags);
bool ret = raw_ret;
info = Gst.MapInfo.New(native_info);
Marshal.FreeHGlobal(native_info);
return(ret);
}
public Gst.Memory MakeMapped(out Gst.MapInfo info, Gst.MapFlags flags)
{
IntPtr native_info = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(Gst.MapInfo)));
IntPtr raw_ret = gst_memory_make_mapped(Handle, native_info, (int)flags);
Gst.Memory ret = raw_ret == IntPtr.Zero ? null : (Gst.Memory)GLib.Opaque.GetOpaque(raw_ret, typeof(Gst.Memory), true);
info = Gst.MapInfo.New(native_info);
Marshal.FreeHGlobal(native_info);
return(ret);
}
public bool MapRange(uint idx, int length, out Gst.MapInfo info, Gst.MapFlags flags)
{
IntPtr native_info = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(Gst.MapInfo)));
bool raw_ret = gst_buffer_map_range(Handle, idx, length, native_info, (int)flags);
bool ret = raw_ret;
info = Gst.MapInfo.New(native_info);
Marshal.FreeHGlobal(native_info);
return(ret);
}
public bool Unmap(uint plane, Gst.MapInfo info)
{
IntPtr this_as_native = System.Runtime.InteropServices.Marshal.AllocHGlobal(System.Runtime.InteropServices.Marshal.SizeOf(this));
System.Runtime.InteropServices.Marshal.StructureToPtr(this, this_as_native, false);
IntPtr native_info = GLib.Marshaller.StructureToPtrAlloc(info);
bool raw_ret = gst_video_meta_unmap(this_as_native, plane, native_info);
bool ret = raw_ret;
ReadNative(this_as_native, ref this);
System.Runtime.InteropServices.Marshal.FreeHGlobal(this_as_native);
Marshal.FreeHGlobal(native_info);
return(ret);
}
public void UpdateImage(ref Gst.MapInfo map, int width, int height)
{
if (Bitmap == null || Bitmap.PixelSize.Width != width || Bitmap.PixelSize.Height != height)
{
var oldBitmap = Bitmap;
Bitmap = new Avalonia.Media.Imaging.WriteableBitmap(new PixelSize(width, height), new Vector(96, 96), Avalonia.Platform.PixelFormat.Rgba8888);
oldBitmap?.Dispose();
}
using (var l = Bitmap.Lock())
{
map.CopyTo(l.Address, l.RowBytes * l.Size.Height);
}
VisualRoot?.Renderer.AddDirty(this);
}