public void ChangeSurfaceZoom(VLCSurfaceZoom desiredZoom)
{
var screenWidth = App.RootPage.SwapChainPanel.ActualWidth;
var screenHeight = App.RootPage.SwapChainPanel.ActualHeight;
var videoTrack = Locator.VLCService.MediaPlayer?.media()?.tracks()?.FirstOrDefault(x => x.type() == TrackType.Video);
if (videoTrack == null)
{
return;
}
var videoHeight = videoTrack.height();
var videoWidth = videoTrack.width();
var sarDen = videoTrack.sarDen();
var sarNum = videoTrack.sarNum();
double var = 0, displayedVideoWidth;
if (sarDen == sarNum)
{
// Assuming it's 1:1 pixel
var = (float)videoWidth / videoHeight;
}
else
{
var = (videoWidth * (double)sarNum / sarDen) / videoHeight;
}
var screenar = (float)screenWidth / screenHeight;
double displayedVideoHeight = 0;
if (var > screenar)
{
displayedVideoHeight = screenWidth * ((float)videoHeight / videoWidth);
displayedVideoWidth = screenWidth;
}
else
{
displayedVideoHeight = screenHeight;
displayedVideoWidth = displayedVideoHeight * var;
}
double bandesNoiresVertical = screenHeight - displayedVideoHeight;
double bandesNoiresHorizontal = screenWidth - displayedVideoWidth;
var scaleTransform = new ScaleTransform();
var verticalScale = Math.Abs(displayedVideoHeight / (displayedVideoHeight - bandesNoiresVertical));
var horizontalScale = Math.Abs(displayedVideoWidth / (displayedVideoWidth - bandesNoiresHorizontal));
scaleTransform.CenterX = screenWidth / 2;
scaleTransform.CenterY = screenHeight / 2;
switch (desiredZoom)
{
case VLCSurfaceZoom.SURFACE_BEST_FIT:
scaleTransform.ScaleX = scaleTransform.ScaleY = 1;
break;
case VLCSurfaceZoom.SURFACE_FIT_HORIZONTAL:
scaleTransform.ScaleX = horizontalScale;
scaleTransform.ScaleY = horizontalScale;
scaleTransform.CenterX = screenWidth / 2;
scaleTransform.CenterY = screenHeight / 2;
break;
case VLCSurfaceZoom.SURFACE_FIT_VERTICAL:
scaleTransform.ScaleX = verticalScale;
scaleTransform.ScaleY = verticalScale;
break;
case VLCSurfaceZoom.SURFACE_STRETCH:
if (bandesNoiresVertical > 0)
{
scaleTransform.ScaleX = 1;
scaleTransform.ScaleY = verticalScale;
}
else if (bandesNoiresHorizontal > 0)
{
scaleTransform.ScaleX = horizontalScale;
scaleTransform.ScaleY = 1;
}
break;
//case VLCSurfaceZoom.SURFACE_FILL:
// break;
//case VLCSurfaceZoom.SURFACE_16_9:
// break;
//case VLCSurfaceZoom.SURFACE_4_3:
// break;
//case VLCSurfaceZoom.SURFACE_ORIGINAL:
// break;
//case VLCSurfaceZoom.SURFACE_CUSTOM_ZOOM:
// break;
default:
break;
}
App.RootPage.SwapChainPanel.RenderTransform = scaleTransform;
}
public void ChangeSurfaceZoom(VLCSurfaceZoom desiredZoom)
{
var playbackService = Locator.PlaybackService;
var screenWidth = App.RootPage.SwapChainPanel.ActualWidth;
var screenHeight = App.RootPage.SwapChainPanel.ActualHeight;
var videoTrack = playbackService.CurrentMedia?.tracks()?.FirstOrDefault(x => x.type() == TrackType.Video);
if (videoTrack == null)
{
return;
}
switch (desiredZoom)
{
case VLCSurfaceZoom.SURFACE_BEST_FIT:
playbackService.VideoAspectRatio = string.Empty;
playbackService.VideoScale = 0;
break;
case VLCSurfaceZoom.SURFACE_FIT_SCREEN:
var videoW = videoTrack.width();
var videoH = videoTrack.height();
if (videoTrack.sarNum() != videoTrack.sarDen())
{
videoW = videoW * videoTrack.sarNum() / videoTrack.sarDen();
}
var ar = videoW / (float)videoH;
var dar = screenWidth / screenHeight;
float scale;
if (dar >= ar)
{
scale = (float)screenWidth / videoW; /* horizontal */
}
else
{
scale = (float)screenHeight / videoH; /* vertical */
}
playbackService.VideoScale = scale;
playbackService.VideoAspectRatio = string.Empty;
break;
case VLCSurfaceZoom.SURFACE_FILL:
playbackService.VideoScale = 0;
playbackService.VideoAspectRatio = $"{screenWidth}:{screenHeight}";
break;
case VLCSurfaceZoom.SURFACE_16_9:
playbackService.VideoAspectRatio = "16:9";
playbackService.VideoScale = 0;
break;
case VLCSurfaceZoom.SURFACE_4_3:
playbackService.VideoAspectRatio = "4:3";
playbackService.VideoScale = 0;
break;
case VLCSurfaceZoom.SURFACE_ORIGINAL:
playbackService.VideoAspectRatio = string.Empty;
playbackService.VideoScale = 1;
break;
case VLCSurfaceZoom.SURFACE_2_35_1:
playbackService.VideoScale = 0;
playbackService.VideoAspectRatio = "21:9"; /* equals 2.35:1 */
break;
}
}
