照片捕获流到 SoftwareBitmap

Question

我的代码：

var stream = new InMemoryRandomAccessStream();
ImageEncodingProperties properties = ImageEncodingProperties.CreateJpeg();
await _mediaCapture.CapturePhotoToStreamAsync(properties, stream);
IBuffer buffer = new byte[stream.Size].AsBuffer();
await stream.ReadAsync(buffer, (uint)stream.Size, InputStreamOptions.None);
SoftwareBitmap sfbmp = SoftwareBitmap.CreateCopyFromBuffer(buffer, BitmapPixelFormat.Bgra8, 4176, 3120); // Exception is thrown here

异常：

Insufficient memory for response

老实说，我对位图缓冲区一无所知所以有人可以帮助我吗？

Answer 1

我用BitmapDecoder解决了

var stream = new InMemoryRandomAccessStream();
ImageEncodingProperties properties = ImageEncodingProperties.CreateJpeg();
await _mediaCapture.CapturePhotoToStreamAsync(properties, stream);
var decoder = await BitmapDecoder.CreateAsync(stream);
SoftwareBitmap sfbmp = await decoder.GetSoftwareBitmapAsync();

照片捕获流到 SoftwareBitmap

Photo Capture stream to SoftwareBitmap

c#

imaging