嗨我需要有关如何从C#UWP中的SoftwareBitmap获取字节数组的帮助,以便我可以通过TCP套接字发送它.
我还可以访问“VideoFrame previewFrame”对象,这是我从中获取SoftwareBitmap的地方.
我在网上看过类似下面的内容,但是UWP不支持wb.SaveJpeg(…).除非我错过了什么？
MemoryStream ms = new MemoryStream(); WriteableBitmap wb = new WriteableBitmap(myimage); wb.SaveJpeg(ms,myimage.PixelWidth,myimage.PixelHeight,100); byte [] imageBytes = ms.ToArray();
任何帮助,或正确方向的指示,将不胜感激.
谢谢,安迪
解决方法
到目前为止我知道你不能这样做.但您可以使用SoftwareBitmap.看看例子：
https://msdn.microsoft.com/en-us/library/windows/apps/mt244351.aspx(SoftwareBitmap是SoftwareBitmapSource的私有字段..只是通过反思读取它…也许这是完全错误的建议)
private async void SaveSoftwareBitmapToFile(SoftwareBitmap softwareBitmap,StorageFile outputFile)
{
using (IRandomAccessStream stream = await outputFile.OpenAsync(FileAccessMode.ReadWrite))
{
// Create an encoder with the desired format
BitmapEncoder encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.JpegEncoderId,stream);
// Set the software bitmap
encoder.SetSoftwareBitmap(softwareBitmap);
// Set additional encoding parameters,if needed
encoder.BitmapTransform.ScaledWidth = 320;
encoder.BitmapTransform.ScaledHeight = 240;
encoder.BitmapTransform.Rotation = Windows.Graphics.Imaging.BitmapRotation.Clockwise90Degrees;
encoder.BitmapTransform.InterpolationMode = BitmapInterpolationMode.Fant;
encoder.IsThumbnailGenerated = true;
try
{
await encoder.FlushAsync();
}
catch (Exception err)
{
switch (err.HResult)
{
case unchecked((int)0x88982F81): //WINCODEC_ERR_UNSUPPORTEDOPERATION
// If the encoder does not support writing a thumbnail,then try again
// but disable thumbnail generation.
encoder.IsThumbnailGenerated = false;
break;
default:
throw;
}
}
if (encoder.IsThumbnailGenerated == false)
{
await encoder.FlushAsync();
}
}
}
