public void DrawOverlay(Surface targetSurface)
{
Texture subTexture;
Subtitle currentSubtitle;
lock (_syncObj)
{
currentSubtitle = _currentSubtitle;
subTexture = _subTexture;
// Available sub is not due
if (currentSubtitle == null || !currentSubtitle.ShouldDraw)
{
return;
}
if (targetSurface == null || targetSurface.Disposed || subTexture == null)
{
if (_drawCount > 0)
{
ServiceRegistration.Get <ILogger>().Debug("Draw count for last sub: {0}", _drawCount);
}
_drawCount = 0;
return;
}
_drawCount++;
}
try
{
if (!subTexture.Disposed)
{
// TemporaryRenderTarget changes RenderTarget to texture and restores settings when done (Dispose)
using (new TemporaryRenderTarget(targetSurface))
using (TemporaryRenderState temporaryRenderState = new TemporaryRenderState())
using (Sprite sprite = new Sprite(_device))
{
sprite.Begin(SpriteFlags.AlphaBlend);
// No alpha test here, allow all values
temporaryRenderState.SetTemporaryRenderState(RenderState.AlphaTestEnable, 0);
// Use the SourceAlpha channel and InverseSourceAlpha for destination
temporaryRenderState.SetTemporaryRenderState(RenderState.BlendOperation, (int)BlendOperation.Add);
temporaryRenderState.SetTemporaryRenderState(RenderState.SourceBlend, (int)Blend.SourceAlpha);
temporaryRenderState.SetTemporaryRenderState(RenderState.DestinationBlend, (int)Blend.InverseSourceAlpha);
// Check the target texture dimensions and adjust scaling and translation
SurfaceDescription desc = targetSurface.Description;
Matrix transform = Matrix.Identity;
transform *= Matrix.Translation(currentSubtitle.HorizontalPosition, currentSubtitle.FirstScanLine, 0);
// Subtitle could be smaller for 16:9 anamorphic video (subtitle width: 720, video texture: 1024)
// then we need to scale the subtitle width also.
if (currentSubtitle.ScreenWidth != desc.Width)
{
transform *= Matrix.Scaling((float)desc.Width / currentSubtitle.ScreenWidth, 1, 1);
}
sprite.Transform = transform;
sprite.Draw(subTexture, Color.White);
sprite.End();
}
}
}
catch (Exception ex)
{
ServiceRegistration.Get <ILogger>().Debug("Error in DrawOverlay", ex);
}
if (_onTextureInvalidated != null)
{
_onTextureInvalidated();
}
}
public void DrawOverlay(Texture targetTexture)
{
Subtitle currentSubtitle;
lock (_syncObj)
{
currentSubtitle = _subtitles.ToList().FirstOrDefault(s => s.ShouldDraw);
if (currentSubtitle == null)
{
return;
}
try
{
// TemporaryRenderTarget changes RenderTarget to texture and restores settings when done (Dispose)
using (new TemporaryRenderTarget(targetTexture))
{
// Check the target texture dimensions and adjust scaling and translation
SurfaceDescription desc = targetTexture.GetLevelDescription(0);
Matrix transform = Matrix.Identity;
// Position subtitle and scale it to match video frame size, if required
transform *= Matrix.Translation(currentSubtitle.HorizontalPosition, currentSubtitle.FirstScanLine, 0);
if (currentSubtitle.ScreenWidth != desc.Width || currentSubtitle.ScreenHeight != desc.Height)
{
var factorW = (float)desc.Width / currentSubtitle.ScreenWidth;
var factorH = (float)desc.Height / currentSubtitle.ScreenHeight;
transform *= Matrix.Scaling(factorW, factorH, 1);
}
if (!string.IsNullOrWhiteSpace(currentSubtitle.Text))
{
// TODO: this calculation works at the moment only in fullscreen mode. When using windowed mode, the text is off screen on bottom and not visible.
// Calculate font size by the available target height divided by the number of teletext lines (25).
float fontSize = (float)Math.Floor(desc.Height / 25f);
if (_textBuffer == null)
{
_textBuffer = new TextBuffer(FontManager.DefaultFontFamily, fontSize);
}
_textBuffer.Text = currentSubtitle.Text;
RectangleF rectangleF = new RectangleF(0, 0, desc.Width, desc.Height);
HorizontalTextAlignEnum horzAlign = HorizontalTextAlignEnum.Center;
VerticalTextAlignEnum vertAlign = VerticalTextAlignEnum.Top;
// Render "glow"
var offset = 1f;
_textBuffer.Render(rectangleF, horzAlign, vertAlign, 0, Color4.Black, 0, transform * Matrix.Translation(-offset, 0f, 0));
_textBuffer.Render(rectangleF, horzAlign, vertAlign, 0, Color4.Black, 0, transform * Matrix.Translation(-offset, -offset, 0));
_textBuffer.Render(rectangleF, horzAlign, vertAlign, 0, Color4.Black, 0, transform * Matrix.Translation(0.0f, offset, 0));
_textBuffer.Render(rectangleF, horzAlign, vertAlign, 0, Color4.Black, 0, transform * Matrix.Translation(offset, offset, 0));
// Text
_textBuffer.Render(rectangleF, horzAlign, vertAlign, 0, Color4.White, 0, transform);
}
else
{
using (TemporaryRenderState temporaryRenderState = new TemporaryRenderState())
{
// No alpha test here, allow all values
temporaryRenderState.SetTemporaryRenderState(RenderState.AlphaTestEnable, 0);
// Use the SourceAlpha channel and InverseSourceAlpha for destination
temporaryRenderState.SetTemporaryRenderState(RenderState.BlendOperation, (int)BlendOperation.Add);
temporaryRenderState.SetTemporaryRenderState(RenderState.SourceBlend, (int)Blend.SourceAlpha);
temporaryRenderState.SetTemporaryRenderState(RenderState.DestinationBlend, (int)Blend.InverseSourceAlpha);
if (currentSubtitle.SubTexture != null && !currentSubtitle.SubTexture.IsDisposed)
{
_sprite.Begin(SpriteFlags.AlphaBlend);
_sprite.Transform = transform;
_sprite.Draw(currentSubtitle.SubTexture, SharpDX.Color.White);
_sprite.End();
}
}
}
}
}
catch (Exception ex)
{
ServiceRegistration.Get <ILogger>().Debug("Error in DrawOverlay", ex);
}
_onTextureInvalidated?.Invoke();
}
}
public void DrawOverlay(Texture targetTexture)
{
Subtitle currentSubtitle;
lock (_syncObj)
{
currentSubtitle = _subtitles.ToList().FirstOrDefault(s => s.ShouldDraw);
if (currentSubtitle == null)
{
return;
}
if (targetTexture == null || targetTexture.IsDisposed || currentSubtitle.SubTexture == null || currentSubtitle.SubTexture.IsDisposed)
{
if (_drawCount > 0)
{
ServiceRegistration.Get <ILogger>().Debug("Draw count for last sub: {0}", _drawCount);
}
_drawCount = 0;
return;
}
_drawCount++;
}
try
{
// TemporaryRenderTarget changes RenderTarget to texture and restores settings when done (Dispose)
using (new TemporaryRenderTarget(targetTexture))
using (TemporaryRenderState temporaryRenderState = new TemporaryRenderState())
using (Sprite sprite = new Sprite(_device))
{
sprite.Begin(SpriteFlags.AlphaBlend);
// No alpha test here, allow all values
temporaryRenderState.SetTemporaryRenderState(RenderState.AlphaTestEnable, 0);
// Use the SourceAlpha channel and InverseSourceAlpha for destination
temporaryRenderState.SetTemporaryRenderState(RenderState.BlendOperation, (int)BlendOperation.Add);
temporaryRenderState.SetTemporaryRenderState(RenderState.SourceBlend, (int)Blend.SourceAlpha);
temporaryRenderState.SetTemporaryRenderState(RenderState.DestinationBlend, (int)Blend.InverseSourceAlpha);
// Check the target texture dimensions and adjust scaling and translation
SurfaceDescription desc = targetTexture.GetLevelDescription(0);
Matrix transform = Matrix.Identity;
// Position subtitle and scale it to match video frame size, if required
transform *= Matrix.Translation(currentSubtitle.HorizontalPosition, currentSubtitle.FirstScanLine, 0);
if (currentSubtitle.ScreenWidth != desc.Width || currentSubtitle.ScreenHeight != desc.Height)
{
var factorW = (float)desc.Width / currentSubtitle.ScreenWidth;
var factorH = (float)desc.Height / currentSubtitle.ScreenHeight;
transform *= Matrix.Scaling(factorW, factorH, 1);
}
sprite.Transform = transform;
sprite.Draw(currentSubtitle.SubTexture, SharpDX.Color.White);
sprite.End();
}
if (_onTextureInvalidated != null)
{
_onTextureInvalidated();
}
}
catch (Exception ex)
{
ServiceRegistration.Get <ILogger>().Debug("Error in DrawOverlay", ex);
}
}
public void DrawOverlay(Texture targetTexture)
{
Subtitle currentSubtitle;
lock (_syncObj)
{
currentSubtitle = _subtitles.ToList().FirstOrDefault(s => s.ShouldDraw);
if (currentSubtitle == null)
{
return;
}
try
{
// TemporaryRenderTarget changes RenderTarget to texture and restores settings when done (Dispose)
using (new TemporaryRenderTarget(targetTexture))
{
Matrix transform = Matrix.Identity;
// Position subtitle
transform *= Matrix.Translation(currentSubtitle.HorizontalPosition, currentSubtitle.FirstScanLine, 0);
if (!string.IsNullOrWhiteSpace(currentSubtitle.Text))
{
// Calculate font size by the available target height divided by the number of teletext lines (25).
float fontSize = (float)Math.Floor(SkinContext.WindowSize.Height / 25f);
if (_textBuffer == null)
{
_textBuffer = new TextBuffer(FontManager.DefaultFontFamily, fontSize);
}
_textBuffer.Text = currentSubtitle.Text;
RectangleF rectangleF = new RectangleF(0, 0, SkinContext.WindowSize.Width, SkinContext.WindowSize.Height);
HorizontalTextAlignEnum horzAlign = HorizontalTextAlignEnum.Center;
VerticalTextAlignEnum vertAlign = VerticalTextAlignEnum.Top;
// Render "glow"
var offset = 1f;
_textBuffer.Render(rectangleF, horzAlign, vertAlign, 0, Color4.Black, 0, transform * Matrix.Translation(-offset, 0f, 0));
_textBuffer.Render(rectangleF, horzAlign, vertAlign, 0, Color4.Black, 0, transform * Matrix.Translation(-offset, -offset, 0));
_textBuffer.Render(rectangleF, horzAlign, vertAlign, 0, Color4.Black, 0, transform * Matrix.Translation(0.0f, offset, 0));
_textBuffer.Render(rectangleF, horzAlign, vertAlign, 0, Color4.Black, 0, transform * Matrix.Translation(offset, offset, 0));
// Text
_textBuffer.Render(rectangleF, horzAlign, vertAlign, 0, Color4.White, 0, transform);
}
else
{
using (TemporaryRenderState temporaryRenderState = new TemporaryRenderState())
{
// No alpha test here, allow all values
temporaryRenderState.SetTemporaryRenderState(RenderState.AlphaTestEnable, 0);
// Use the SourceAlpha channel and InverseSourceAlpha for destination
temporaryRenderState.SetTemporaryRenderState(RenderState.BlendOperation, (int)BlendOperation.Add);
temporaryRenderState.SetTemporaryRenderState(RenderState.SourceBlend, (int)Blend.SourceAlpha);
temporaryRenderState.SetTemporaryRenderState(RenderState.DestinationBlend, (int)Blend.InverseSourceAlpha);
if (currentSubtitle.SubTexture != null && !currentSubtitle.SubTexture.IsDisposed)
{
_sprite.Begin(SpriteFlags.AlphaBlend);
_sprite.Transform = transform;
_sprite.Draw(currentSubtitle.SubTexture, SharpDX.Color.White);
_sprite.End();
}
}
}
}
}
catch (Exception ex)
{
ServiceRegistration.Get <ILogger>().Debug("Error in DrawOverlay", ex);
}
_onTextureInvalidated?.Invoke();
}
}
