protected override void dequeue(FileHandle videoDevice) { int idx = buffer.index; videoDevice.call(eControlCode.DQBUF, ref buffer); if (buffer.index != idx) { throw new ApplicationException($"DecodedBuffer.dequeue: expecting buffer #{ idx }, got #{ buffer.index }"); } // Logger.logVerbose( "DecodedBuffer.dequeue: {0}", buffer ); // Logger.logVerbose( "DecodedBuffer.dequeue: {0}", buffer.index ); }
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 override string queryStatus(FileHandle videoDevice) { videoDevice.call(eControlCode.QUERYBUF, ref buffer); return(buffer.ToString()); }
protected override void enqueue(FileHandle videoDevice) { videoDevice.call(eControlCode.QBUF, ref buffer); }