162 lines
7.3 KiB
C#
162 lines
7.3 KiB
C#
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// Copyright (c) 2010-2014 SharpDX - Alexandre Mutel
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System;
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using SharpDX.Multimedia;
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namespace SharpDX.DirectSound
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{
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public partial class CaptureBufferBase
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{
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/// <summary>
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/// True if the buffer is currently capturing.
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/// </summary>
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public bool Capturing
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{
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get
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{
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return (CaptureStatus & CaptureBufferStatusFlags.Capturing) != 0;
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}
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}
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/// <summary>
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/// The offset from the start of the buffer, in bytes, of the capture cursor.
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/// </summary>
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public int CurrentCapturePosition
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{
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get
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{
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int capturePosition;
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int realPosition;
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GetCurrentPosition(out capturePosition, out realPosition);
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return capturePosition;
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}
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}
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/// <summary>
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/// The offset from the start of the buffer, in bytes, of the read cursor.
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/// </summary>
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public int CurrentRealPosition
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{
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get
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{
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int capturePosition;
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int realPosition;
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GetCurrentPosition(out capturePosition, out realPosition);
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return realPosition;
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}
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}
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/// <summary>
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/// True if the capture buffer is looping.
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/// </summary>
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public bool Looping
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{
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get
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{
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return (CaptureStatus & CaptureBufferStatusFlags.Looping) != 0;
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}
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}
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/// <summary>
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/// Gets the waveform format of the capture buffer.
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/// </summary>
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/// <value>The format.</value>
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public WaveFormat Format
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{
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get
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{
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unsafe
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{
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WaveFormatExtensible.__Native native = WaveFormatExtensible.__NewNative();
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int sizeOfInputStructure = Utilities.SizeOf<WaveFormatExtensible.__Native>();
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int sizeOfStructureReturned;
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GetFormat(new IntPtr(&native), sizeOfInputStructure, out sizeOfStructureReturned);
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return WaveFormat.MarshalFrom(new IntPtr(&native));
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}
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}
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}
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/// <summary>
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/// The Lock method locks a portion of the buffer. Locking the buffer returns references into the buffer, allowing the application to read or write audio data into memory.
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/// </summary>
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/// <param name="offset">Offset, in bytes, from the start of the buffer to the point where the lock begins. </param>
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/// <param name="sizeBytes">Size, in bytes, of the portion of the buffer to lock. Because the buffer is conceptually circular, this number can exceed the number of bytes between dwOffset and the end of the buffer. </param>
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/// <param name="flags"> Flags modifying the lock event. The following flags are defined: ValueDescription DSBLOCK_FROMWRITECURSORStart the lock at the write cursor. The dwOffset parameter is ignored. DSBLOCK_ENTIREBUFFERLock the entire buffer. The dwBytes parameter is ignored. </param>
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/// <param name="secondPart"> Address of a variable that receives a pointer to the second locked part of the capture buffer. If NULL is returned, the ppvAudioPtr1 parameter points to the entire locked portion of the capture buffer. </param>
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/// <returns>Address of a variable that receives a pointer to the first locked part of the buffer.</returns>
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/// <unmanaged>HRESULT IDirectSoundCaptureBuffer::Lock([None] int dwOffset,[None] int dwBytes,[Out] void** ppvAudioPtr1,[Out] int* pdwAudioBytes1,[Out] void** ppvAudioPtr2,[Out, Optional] int* pdwAudioBytes2,[None] int dwFlags)</unmanaged>
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public DataStream Lock(int offset, int sizeBytes, LockFlags flags, out DataStream secondPart)
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{
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IntPtr dataPart1;
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int sizePart1;
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IntPtr dataPart2;
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int sizePart2;
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Lock(offset, sizeBytes, out dataPart1, out sizePart1, out dataPart2, out sizePart2, (int)flags);
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secondPart = null;
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if (dataPart2 != IntPtr.Zero)
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secondPart = new DataStream(dataPart2, sizePart2, true, true);
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return new DataStream(dataPart1, sizePart1, true, true);
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}
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/// <summary>
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/// The Unlock method releases a locked sound buffer.
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/// </summary>
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/// <param name="dataPart1"> Address of the value retrieved in the ppvAudioPtr1 parameter of the {{Lock}} method. </param>
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/// <param name="dataPart2"> Address of the value retrieved in the ppvAudioPtr2 parameter of the IDirectSoundBuffer8::Lock method. </param>
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/// <returns>No documentation.</returns>
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/// <unmanaged>HRESULT IDirectSoundBuffer::Unlock([In, Buffer] void* pvAudioPtr1,[None] int dwAudioBytes1,[In, Buffer, Optional] void* pvAudioPtr2,[None] int dwAudioBytes2)</unmanaged>
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public void Unlock(DataStream dataPart1, DataStream dataPart2)
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{
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if (dataPart2 != null)
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Unlock(dataPart1.DataPointer, (int)dataPart1.Length, dataPart2.DataPointer, (int)dataPart2.Length);
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else
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Unlock(dataPart1.DataPointer, (int)dataPart1.Length, IntPtr.Zero, 0);
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}
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/// <summary>
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/// Writes data to the buffer.
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/// </summary>
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/// <returns />
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public void Read<T>(T[] data, int bufferOffset, LockFlags flags) where T : struct
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{
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this.Read<T>(data, 0, 0, bufferOffset, flags);
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}
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/// <summary>
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/// Writes data to the buffer.
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/// </summary>
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/// <returns />
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public void Read<T>(T[] data, int startIndex, int count, int bufferOffset, LockFlags flags) where T : struct
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{
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DataStream stream2 = null;
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//Utilities.CheckArrayBounds(data, startIndex, ref count);
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int bytes = Utilities.SizeOf<T>() * count;
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DataStream stream1 = this.Lock(bufferOffset, bytes, flags, out stream2);
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int count1 = (int)(((long)((int)stream1.Length)) / (Utilities.SizeOf<T>()));
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stream1.ReadRange(data, startIndex, count1);
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if ((stream2 != null) && (count > count1))
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stream2.ReadRange<T>(data, count1 + startIndex, count - count1);
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Unlock(stream1, stream2);
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}
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}
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}
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