public EncodedBuffer(FileHandle videoDevice, int bufferIndex) : base(bufferIndex)
{
// https://www.kernel.org/doc/html/v4.19/media/uapi/v4l/mmap.html#example-mapping-buffers-in-the-single-planar-api
buffer = default;
buffer.type = eBufferType.VideoOutputMPlane;
buffer.memory = eMemory.MemoryMap;
buffer.index = bufferIndex;
buffer.length = 1;
planes = new PlanesArray(1);
buffer.m.planes = planes;
videoDevice.call(eControlCode.QUERYBUF, ref buffer);
// Logger.logVerbose( "eControlCode.QUERYBUF completed.\n\tbuffer: {0}\n\tplane: {1}", buffer, plane );
ref sPlane plane = ref planes.span[0];
public DecodedBuffer(int bufferIndex, VideoDevice device)
: base(bufferIndex)
{
// Create small unmanaged buffer for our 2 planes
planes = new PlanesArray(2);
buffer.index = bufferIndex;
buffer.type = eBufferType.VideoCaptureMPlane;
buffer.field = eField.Progressive;
buffer.memory = eMemory.MemoryMap;
buffer.length = 2;
buffer.m.planes = planes;
device.file.call(eControlCode.QUERYBUF, ref buffer);
// Logger.logVerbose( "Decoded buffer: {0}", buffer );
buffer.flags |= eBufferFlags.NoCacheInvalidate;
}