public StorageVideo(StorageFile file, BasicProperties basic, VideoProperties props, MediaEncodingProfile profile)
: base(file, basic)
{
_fullRectangle = new Rect(0, 0, props.GetWidth(), props.GetHeight());
_basic = basic;
Properties = props;
Profile = profile;
videoDuration = props.Duration.TotalMilliseconds;
originalSize = (long)basic.Size;
originalWidth = (int)props.GetWidth();
originalHeight = (int)props.GetHeight();
originalBitrate = bitrate = (int)props.Bitrate; //(trackBitrate / 100000 * 100000);
if (bitrate > 900000)
{
bitrate = 900000;
}
LoadPreview();
}
public static async Task <TLPhotoSizeBase> GetVideoThumbnailAsync(StorageFile file, VideoProperties props, VideoTransformEffectDefinition effect)
{
double originalWidth = props.GetWidth();
double originalHeight = props.GetHeight();
if (effect != null && !effect.CropRectangle.IsEmpty)
{
file = await CropAsync(file, effect.CropRectangle);
originalWidth = effect.CropRectangle.Width;
originalHeight = effect.CropRectangle.Height;
}
TLPhotoSizeBase result;
var fileLocation = new TLFileLocation
{
VolumeId = TLLong.Random(),
LocalId = TLInt.Random(),
Secret = TLLong.Random(),
DCId = 0
};
var desiredName = string.Format("{0}_{1}_{2}.jpg", fileLocation.VolumeId, fileLocation.LocalId, fileLocation.Secret);
var desiredFile = await FileUtils.CreateTempFileAsync(desiredName);
using (var fileStream = await OpenReadAsync(file))
using (var outputStream = await desiredFile.OpenAsync(FileAccessMode.ReadWrite))
{
var decoder = await BitmapDecoder.CreateAsync(fileStream);
double ratioX = (double)90 / originalWidth;
double ratioY = (double)90 / originalHeight;
double ratio = Math.Min(ratioX, ratioY);
uint width = (uint)(originalWidth * ratio);
uint height = (uint)(originalHeight * ratio);
var transform = new BitmapTransform();
transform.ScaledWidth = width;
transform.ScaledHeight = height;
transform.InterpolationMode = BitmapInterpolationMode.Linear;
if (effect != null)
{
transform.Flip = effect.Mirror == MediaMirroringOptions.Horizontal ? BitmapFlip.Horizontal : BitmapFlip.None;
}
var pixelData = await decoder.GetSoftwareBitmapAsync(decoder.BitmapPixelFormat, decoder.BitmapAlphaMode, transform, ExifOrientationMode.RespectExifOrientation, ColorManagementMode.DoNotColorManage);
var propertySet = new BitmapPropertySet();
var qualityValue = new BitmapTypedValue(0.77, PropertyType.Single);
propertySet.Add("ImageQuality", qualityValue);
var encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.JpegEncoderId, outputStream);
encoder.SetSoftwareBitmap(pixelData);
await encoder.FlushAsync();
result = new TLPhotoSize
{
W = (int)width,
H = (int)height,
Size = (int)outputStream.Size,
Type = string.Empty,
Location = fileLocation
};
}
return(result);
}