2.0.7

CUETools.Codecs.CoreAudio/CoreAudioApi/AudioCaptureClient.cs

@@ -0,0 +1,91 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Runtime.InteropServices;
+using NAudio.CoreAudioApi.Interfaces;
+
+namespace NAudio.CoreAudioApi
+{
+    /// <summary>
+    /// Audio Capture Client
+    /// </summary>
+    public class AudioCaptureClient : IDisposable
+    {
+        IAudioCaptureClient audioCaptureClientInterface;
+
+        internal AudioCaptureClient(IAudioCaptureClient audioCaptureClientInterface)
+        {
+            this.audioCaptureClientInterface = audioCaptureClientInterface;
+        }
+
+        /// <summary>
+        /// Gets a pointer to the buffer
+        /// </summary>
+        /// <returns>Pointer to the buffer</returns>
+        public IntPtr GetBuffer(
+            out int numFramesToRead,
+            out AudioClientBufferFlags bufferFlags,
+            out long devicePosition,
+            out long qpcPosition)
+        {
+            IntPtr bufferPointer;
+            Marshal.ThrowExceptionForHR(audioCaptureClientInterface.GetBuffer(out bufferPointer, out numFramesToRead, out bufferFlags, out devicePosition, out qpcPosition));
+            return bufferPointer;
+        }
+
+        /// <summary>
+        /// Gets a pointer to the buffer
+        /// </summary>
+        /// <param name="numFramesToRead">Number of frames to read</param>
+        /// <param name="bufferFlags">Buffer flags</param>
+        /// <returns>Pointer to the buffer</returns>
+        public IntPtr GetBuffer(
+            out int numFramesToRead,
+            out AudioClientBufferFlags bufferFlags)
+        {
+            IntPtr bufferPointer;
+            long devicePosition;
+            long qpcPosition;
+            Marshal.ThrowExceptionForHR(audioCaptureClientInterface.GetBuffer(out bufferPointer, out numFramesToRead, out bufferFlags, out devicePosition, out qpcPosition));
+            return bufferPointer;
+        }
+
+        /// <summary>
+        /// Gets the size of the next packet
+        /// </summary>
+        public int GetNextPacketSize()
+        {
+            int numFramesInNextPacket;
+            Marshal.ThrowExceptionForHR(audioCaptureClientInterface.GetNextPacketSize(out numFramesInNextPacket));
+            return numFramesInNextPacket;
+        }
+
+        /// <summary>
+        /// Release buffer
+        /// </summary>
+        /// <param name="numFramesWritten">Number of frames written</param>
+        public void ReleaseBuffer(int numFramesWritten)
+        {
+            Marshal.ThrowExceptionForHR(audioCaptureClientInterface.ReleaseBuffer(numFramesWritten));
+        }
+
+        #region IDisposable Members
+
+        /// <summary>
+        /// Release the COM object
+        /// </summary>
+        public void Dispose()
+        {
+            if (audioCaptureClientInterface != null)
+            {
+                // althugh GC would do this for us, we want it done now
+                // to let us reopen WASAPI
+                Marshal.ReleaseComObject(audioCaptureClientInterface);
+                audioCaptureClientInterface = null;
+                GC.SuppressFinalize(this);
+            }
+        }
+
+        #endregion
+    }
+}