public ChatBackgroundPresenter()
{
_imageBackground = new Rectangle();
_colorBackground = new Rectangle();
_defaultBackground = new ChatBackgroundFreeform();
Children.Add(_colorBackground);
Children.Add(_imageBackground);
_compositor = Window.Current.Compositor;
ElementCompositionPreview.GetElementVisual(this).Clip = _compositor.CreateInsetClip();
SizeChanged += OnSizeChanged;
}
private async Task ChatPhotoAsync(UpdateFileGenerationStart update, string[] args)
{
try
{
var conversion = JsonConvert.DeserializeObject <ChatPhotoConversion>(args[2]);
var sticker = await _protoService.SendAsync(new GetFile(conversion.StickerFileId)) as Telegram.Td.Api.File;
if (sticker == null || !sticker.Local.IsFileExisting())
{
_protoService.Send(new FinishFileGeneration(update.GenerationId, new Error(500, "FILE_GENERATE_LOCATION_INVALID No sticker found")));
return;
}
Background background = null;
var backgroundLink = await _protoService.SendAsync(new GetInternalLinkType(conversion.BackgroundUrl ?? string.Empty)) as InternalLinkTypeBackground;
if (backgroundLink != null)
{
background = await _protoService.SendAsync(new SearchBackground(backgroundLink.BackgroundName)) as Background;
}
else
{
var freeform = new[] { 0xDBDDBB, 0x6BA587, 0xD5D88D, 0x88B884 };
background = new Background(0, true, false, string.Empty,
new Document(string.Empty, "application/x-tgwallpattern", null, null, TdExtensions.GetLocalFile("Assets\\Background.tgv", "Background")),
new BackgroundTypePattern(new BackgroundFillFreeformGradient(freeform), 50, false, false));
}
if (background == null || (background.Document != null && !background.Document.DocumentValue.Local.IsFileExisting()))
{
_protoService.Send(new FinishFileGeneration(update.GenerationId, new Error(500, "FILE_GENERATE_LOCATION_INVALID No background found")));
return;
}
var device = CanvasDevice.GetSharedDevice();
var bitmaps = new List <CanvasBitmap>();
var sfondo = new CanvasRenderTarget(device, 640, 640, 96, DirectXPixelFormat.B8G8R8A8UIntNormalized, CanvasAlphaMode.Premultiplied);
using (var session = sfondo.CreateDrawingSession())
{
if (background.Type is BackgroundTypePattern pattern)
{
if (pattern.Fill is BackgroundFillFreeformGradient freeform)
{
var colors = freeform.GetColors();
var positions = new Vector2[]
{
new Vector2(0.80f, 0.10f),
new Vector2(0.35f, 0.25f),
new Vector2(0.20f, 0.90f),
new Vector2(0.65f, 0.75f),
};
using (var gradient = CanvasBitmap.CreateFromBytes(device, ChatBackgroundFreeform.GenerateGradientData(50, 50, colors, positions), 50, 50, DirectXPixelFormat.B8G8R8A8UIntNormalized))
using (var cache = await PlaceholderHelper.GetPatternBitmapAsync(device, null, background.Document.DocumentValue))
{
using (var scale = new ScaleEffect {
Source = gradient, BorderMode = EffectBorderMode.Hard, Scale = new Vector2(640f / 50f, 640f / 50f)
})
using (var colorize = new TintEffect {
Source = cache, Color = Color.FromArgb(0x76, 00, 00, 00)
})
using (var tile = new BorderEffect {
Source = colorize, ExtendX = CanvasEdgeBehavior.Wrap, ExtendY = CanvasEdgeBehavior.Wrap
})
using (var effect = new BlendEffect {
Foreground = tile, Background = scale, Mode = BlendEffectMode.Overlay
})
{
session.DrawImage(effect, new Rect(0, 0, 640, 640), new Rect(0, 0, 640, 640));
}
}
}
}
}
bitmaps.Add(sfondo);
var width = (int)(512d * conversion.Scale);
var height = (int)(512d * conversion.Scale);
var animation = await Task.Run(() => LottieAnimation.LoadFromFile(sticker.Local.Path, new Windows.Graphics.SizeInt32 {
Width = width, Height = height
}, false, null));
if (animation == null)
{
_protoService.Send(new FinishFileGeneration(update.GenerationId, new Error(500, "FILE_GENERATE_LOCATION_INVALID Can't load Lottie animation")));
return;
}
var composition = new MediaComposition();
var layer = new MediaOverlayLayer();
var buffer = ArrayPool <byte> .Shared.Rent(width *height * 4);
var framesPerUpdate = animation.FrameRate < 60 ? 1 : 2;
var duration = TimeSpan.Zero;
for (int i = 0; i < animation.TotalFrame; i += framesPerUpdate)
{
var bitmap = CanvasBitmap.CreateFromBytes(device, buffer, width, height, DirectXPixelFormat.B8G8R8A8UIntNormalized);
animation.RenderSync(bitmap, i);
var clip = MediaClip.CreateFromSurface(bitmap, TimeSpan.FromMilliseconds(1000d / 30d));
var overlay = new MediaOverlay(clip, new Rect(320 - (width / 2d), 320 - (height / 2d), width, height), 1);
overlay.Delay = duration;
layer.Overlays.Add(overlay);
duration += clip.OriginalDuration;
bitmaps.Add(bitmap);
}
composition.OverlayLayers.Add(layer);
composition.Clips.Add(MediaClip.CreateFromSurface(sfondo, duration));
var temp = await _protoService.GetFileAsync(update.DestinationPath);
var profile = MediaEncodingProfile.CreateMp4(VideoEncodingQuality.Auto);
profile.Audio = null;
profile.Video.Bitrate = 1800000;
profile.Video.Width = 640;
profile.Video.Height = 640;
profile.Video.FrameRate.Numerator = 30;
profile.Video.FrameRate.Denominator = 1;
var progress = composition.RenderToFileAsync(temp, MediaTrimmingPreference.Precise, profile);
progress.Progress = (result, delta) =>
{
_protoService.Send(new SetFileGenerationProgress(update.GenerationId, 100, (int)delta));
};
var result = await progress;
if (result == TranscodeFailureReason.None)
{
_protoService.Send(new FinishFileGeneration(update.GenerationId, null));
}
else
{
_protoService.Send(new FinishFileGeneration(update.GenerationId, new Error(500, result.ToString())));
}
ArrayPool <byte> .Shared.Return(buffer);
foreach (var bitmap in bitmaps)
{
bitmap.Dispose();
}
}
catch (Exception ex)
{
_protoService.Send(new FinishFileGeneration(update.GenerationId, new Error(500, "FILE_GENERATE_LOCATION_INVALID " + ex.ToString())));
}
}
