如何在不将其转换为位图的情况下翻转 SharpDX.Databox?我正在使用 SharpDX 和 Media Foundation 进行屏幕录制。以下是有关如何获取 Databox 的代码。
mapSource = device.ImmediateContext.MapSubresource(screenTexture, 0,SharpDX.Direct3D11.MapMode.Read, SharpDX.Direct3D11.MapFlags.None);
但是当我通过 mediafoundation.net 中的 mapSource 时,我制作了一个垂直视频。
IMFSample sample = null;
IMFMediaBuffer buffer = null;
IntPtr data = new IntPtr();
int bufferMaxLength;
int bufferCurrentLength;
int hr = (int)MFExtern.MFCreateMemoryBuffer(frameSizeBytes, out buffer);
if (Succeeded(hr)) hr = (int)buffer.Lock(out data, out bufferMaxLength, out bufferCurrentLength);
if (Succeeded(hr))
{
hr = (int)MFExtern.MFCopyImage(data, videoWidth * BYTES_PER_PIXEL, mapSource.DataPointer, videoWidth * BYTES_PER_PIXEL, videoWidth * BYTES_PER_PIXEL, videoHeight);
}
if (Succeeded(hr)) hr = (int)buffer.Unlock();
if (Succeeded(hr)) hr = (int)buffer.SetCurrentLength(frameSizeBytes);
if (Succeeded(hr)) hr = (int)MFExtern.MFCreateSample(out sample);
if (Succeeded(hr)) hr = (int)sample.AddBuffer(buffer);
if (Succeeded(hr)) hr = (int)sample.SetSampleTime(frame.prevRecordingDuration.Ticks);//(TICKS_PER_SECOND * frames / VIDEO_FPS);
if (Succeeded(hr)) hr = (int)sample.SetSampleDuration((frame.recordDuration-frame.prevRecordingDuration).Ticks);
if (Succeeded(hr)) hr = (int)sinkWriter.WriteSample(streamIndex, sample);
if (Succeeded(hr)) frames++;
COMBase.SafeRelease(sample);
COMBase.SafeRelease(buffer);