问题遇到的现象和发生背景
WaveOut播放音频流在一直开启音频接收线程时为什么持续几天后程序会突然挂掉？
问题相关代码，请勿粘贴截图
public void StartUDP()
{
//开启UDP监听.....
m_pUdpServer = new UdpServer();
m_pUdpServer.Bindings = new IPEndPoint[] { new IPEndPoint(IPAddress.Parse(localIp), localUdpPort) };
m_pUdpServer.PacketReceived += new PacketReceivedHandler(m_pUdpServer_PacketReceived);
m_pUdpServer.Start();
}
public void m_pUdpServer_PacketReceived(UdpPacket_eArgs e)
{
// Decompress data.
byte[] decodedData = null;//new byte[1024];
decodedData = G711.Decode_aLaw(e.Data, 0, e.Data.Length);
// recvNtwStream.Read(decodedData, 0, decodedData.Length);
string packStr = Helper.GetDecStringFromArray(e.Data);
if (!(packStr.Contains("D5 D5 D5") || packStr.Contains("55 55 55")))
{
// decodedData = G711.Decode_uLaw(e.Data, 0, e.Data.Length);
// We just play received packet.
if (m_pWaveOut != null)
{
m_pWaveOut.Play(decodedData, 0, decodedData.Length);
}
}
}
//内部调用
using System;
using System.IO;
using System.Collections.Generic;
using System.Text;
using System.Threading;
using System.Runtime.InteropServices;
using LumiSoft.Media.Wave.Native;
namespace LumiSoft.Media.Wave
{
///
/// This class implements streaming wav data player.
///
public class WaveOut : IDisposable
{
#region class PlayItem
/// <summary>
/// This class holds queued wav play item.
/// </summary>
internal class PlayItem
{
private GCHandle m_HeaderHandle;
private GCHandle m_DataHandle;
private int m_DataSize = 0;
/// <summary>
/// Default constructor.
/// </summary>
/// <param name="headerHandle">Header handle.</param>
/// <param name="header">Wav header.</param>
/// <param name="dataHandle">Wav header data handle.</param>
/// <param name="dataSize">Data size in bytes.</param>
public PlayItem(ref GCHandle headerHandle,ref GCHandle dataHandle,int dataSize)
{
m_HeaderHandle = headerHandle;
m_DataHandle = dataHandle;
m_DataSize = dataSize;
}
#region method Dispose
/// <summary>
/// Cleans up any resources being used.
/// </summary>
public void Dispose()
{
m_HeaderHandle.Free();
m_DataHandle.Free();
}
#endregion
#region Properties Implementation
/// <summary>
/// Gets header handle.
/// </summary>
public GCHandle HeaderHandle
{
get{ return m_HeaderHandle; }
}
/// <summary>
/// Gets header.
/// </summary>
public WAVEHDR Header
{
get{ return (WAVEHDR)m_HeaderHandle.Target; }
}
/// <summary>
/// Gets wav header data pointer handle.
/// </summary>
public GCHandle DataHandle
{
get{ return m_DataHandle; }
}
/// <summary>
/// Gets wav header data size in bytes.
/// </summary>
public int DataSize
{
get{ return m_DataSize; }
}
#endregion
}
#endregion
private WavOutDevice m_pOutDevice = null;
private int m_SamplesPerSec = 8000;
private int m_BitsPerSample = 16;
private int m_Channels = 1;
private int m_MinBuffer = 1200;
private IntPtr m_pWavDevHandle = IntPtr.Zero;
private int m_BlockSize = 0;
private int m_BytesBuffered = 0;
private bool m_IsPaused = false;
private List<PlayItem> m_pPlayItems = null;
private waveOutProc m_pWaveOutProc = null;
private bool m_IsDisposed = false;
/// <summary>
/// Default constructor.
/// </summary>
/// <param name="outputDevice">Output device.</param>
/// <param name="samplesPerSec">Sample rate, in samples per second (hertz). For PCM common values are
/// 8.0 kHz, 11.025 kHz, 22.05 kHz, and 44.1 kHz.</param>
/// <param name="bitsPerSample">Bits per sample. For PCM 8 or 16 are the only valid values.</param>
/// <param name="channels">Number of channels.</param>
/// <exception cref="ArgumentNullException">Is raised when <b>outputDevice</b> is null.</exception>
/// <exception cref="ArgumentException">Is raised when any of the aruments has invalid value.</exception>
public WaveOut(WavOutDevice outputDevice,int samplesPerSec,int bitsPerSample,int channels)
{
if(outputDevice == null){
throw new ArgumentNullException("outputDevice");
}
if(samplesPerSec < 8000){
throw new ArgumentException("Argument 'samplesPerSec' value must be >= 8000.");
}
if(bitsPerSample < 8){
throw new ArgumentException("Argument 'bitsPerSample' value must be >= 8.");
}
if(channels < 1){
throw new ArgumentException("Argument 'channels' value must be >= 1.");
}
m_pOutDevice = outputDevice;
m_SamplesPerSec = samplesPerSec;
m_BitsPerSample = bitsPerSample;
m_Channels = channels;
m_BlockSize = m_Channels * (m_BitsPerSample / 8);
m_pPlayItems = new List<PlayItem>();
// Try to open wav device.
WAVEFORMATEX format = new WAVEFORMATEX();
format.wFormatTag = WavFormat.PCM;
format.nChannels = (ushort)m_Channels;
format.nSamplesPerSec = (uint)samplesPerSec;
format.nAvgBytesPerSec = (uint)(m_SamplesPerSec * m_Channels * (m_BitsPerSample / 8));
format.nBlockAlign = (ushort)m_BlockSize;
format.wBitsPerSample = (ushort)m_BitsPerSample;
format.cbSize = 0;
// We must delegate reference, otherwise GC will collect it.
m_pWaveOutProc = new waveOutProc(this.OnWaveOutProc);
int result = WavMethods.waveOutOpen(out m_pWavDevHandle,m_pOutDevice.Index,format,m_pWaveOutProc,0,WavConstants.CALLBACK_FUNCTION);
if(result != MMSYSERR.NOERROR){
throw new Exception("Failed to open wav device, error: " + result.ToString() + ".");
}
}
/// <summary>
/// Default destructor.
/// </summary>
~WaveOut()
{
Dispose();
}
#region method Dispose
/// <summary>
/// Cleans up any resources being used.
/// </summary>
public void Dispose()
{
if(m_IsDisposed){
return;
}
m_IsDisposed = true;
try{
// If playing, we need to reset wav device first.
WavMethods.waveOutReset(m_pWavDevHandle);
// If there are unprepared wav headers, we need to unprepare these.
foreach(PlayItem item in m_pPlayItems){
WavMethods.waveOutUnprepareHeader(m_pWavDevHandle,item.HeaderHandle.AddrOfPinnedObject(),Marshal.SizeOf(item.Header));
item.Dispose();
}
// Close output device.
WavMethods.waveOutClose(m_pWavDevHandle);
m_pOutDevice = null;
m_pWavDevHandle = IntPtr.Zero;
m_pPlayItems = null;
m_pWaveOutProc = null;
}
catch{
}
}
#endregion
#region method OnWaveOutProc
/// <summary>
/// This method is called when wav device generates some event.
/// </summary>
/// <param name="hdrvr">Handle to the waveform-audio device associated with the callback.</param>
/// <param name="uMsg">Waveform-audio output message.</param>
/// <param name="dwUser">User-instance data specified with waveOutOpen.</param>
/// <param name="dwParam1">Message parameter.</param>
/// <param name="dwParam2">Message parameter.</param>
private void OnWaveOutProc(IntPtr hdrvr,int uMsg,int dwUser,int dwParam1,int dwParam2)
{
// NOTE: MSDN warns, we may not call any wav related methods here.
try{
if(uMsg == WavConstants.MM_WOM_DONE){
ThreadPool.QueueUserWorkItem(new WaitCallback(this.OnCleanUpFirstBlock));
}
}
catch{
}
}
#endregion
#region method OnCleanUpFirstBlock
/// <summary>
/// Cleans up the first data block in play queue.
/// </summary>
/// <param name="state">User data.</param>
private void OnCleanUpFirstBlock(object state)
{
try{
lock(m_pPlayItems){
PlayItem item = m_pPlayItems[0];
WavMethods.waveOutUnprepareHeader(m_pWavDevHandle,item.HeaderHandle.AddrOfPinnedObject(),Marshal.SizeOf(item.Header));
m_pPlayItems.Remove(item);
m_BytesBuffered -= item.DataSize;
item.Dispose();
}
}
catch{
}
}
#endregion
#region method Play
/// <summary>
/// Plays specified audio data bytes. If player is currently playing, data will be queued for playing.
/// </summary>
/// <param name="audioData">Audio data. Data boundary must n * BlockSize.</param>
/// <param name="offset">Offset in the buffer.</param>
/// <param name="count">Number of bytes to play form the specified offset.</param>
/// <exception cref="ObjectDisposedException">Is raised when this object is disposed and this method is accessed.</exception>
/// <exception cref="ArgumentNullException">Is raised when <b>audioData</b> is null.</exception>
/// <exception cref="ArgumentException">Is raised when <b>audioData</b> is with invalid length.</exception>
public void Play(byte[] audioData,int offset,int count)
{
if(m_IsDisposed){
throw new ObjectDisposedException("WaveOut");
}
if(audioData == null){
throw new ArgumentNullException("audioData");
}
if((count % m_BlockSize) != 0){
throw new ArgumentException("Audio data is not n * BlockSize.");
}
//--- Queue specified audio block for play. --------------------------------------------------------
byte[] data = new byte[count];
Array.Copy(audioData,offset,data,0,count);
GCHandle dataHandle = GCHandle.Alloc(data,GCHandleType.Pinned);
// m_BytesBuffered += data.Length;
WAVEHDR wavHeader = new WAVEHDR();
wavHeader.lpData = dataHandle.AddrOfPinnedObject();
wavHeader.dwBufferLength = (uint)data.Length;
wavHeader.dwBytesRecorded = 0;
wavHeader.dwUser = IntPtr.Zero;
wavHeader.dwFlags = 0;
wavHeader.dwLoops = 0;
wavHeader.lpNext = IntPtr.Zero;
wavHeader.reserved = 0;
GCHandle headerHandle = GCHandle.Alloc(wavHeader,GCHandleType.Pinned);
int result = 0;
result = WavMethods.waveOutPrepareHeader(m_pWavDevHandle,headerHandle.AddrOfPinnedObject(),Marshal.SizeOf(wavHeader));
if(result == MMSYSERR.NOERROR){
PlayItem item = new PlayItem(ref headerHandle,ref dataHandle,data.Length);
m_pPlayItems.Add(item);
// We ran out of minimum buffer, we must pause playing while min buffer filled.
if(m_BytesBuffered < 1000){
if(!m_IsPaused){
WavMethods.waveOutPause(m_pWavDevHandle);
m_IsPaused = true;
}
//File.AppendAllText("aaaa.txt","Begin buffer\r\n");
}
// Buffering completed,we may resume playing.
else if(m_IsPaused && m_BytesBuffered > m_MinBuffer){
WavMethods.waveOutRestart(m_pWavDevHandle);
m_IsPaused = false;
//File.AppendAllText("aaaa.txt","end buffer: " + m_BytesBuffered + "\r\n");
}
/*
// TODO: If we ran out of minimum buffer, we must pause playing while min buffer filled.
if(m_BytesBuffered < m_MinBuffer){
if(!m_IsPaused){
WavMethods.waveOutPause(m_pWavDevHandle);
m_IsPaused = true;
}
}
else if(m_IsPaused){
WavMethods.waveOutRestart(m_pWavDevHandle);
}*/
m_BytesBuffered += data.Length;
result = WavMethods.waveOutWrite(m_pWavDevHandle,headerHandle.AddrOfPinnedObject(),Marshal.SizeOf(wavHeader));
}
else{
dataHandle.Free();
headerHandle.Free();
}
//--------------------------------------------------------------------------------------------------
}
#endregion
#region method GetVolume
/// <summary>
/// Gets audio output volume.
/// </summary>
/// <param name="left">Left channel volume level.</param>
/// <param name="right">Right channel volume level.</param>
/// <exception cref="ObjectDisposedException">Is raised when this object is disposed and this method is accessed.</exception>
public void GetVolume(ref ushort left,ref ushort right)
{
if(m_IsDisposed){
throw new ObjectDisposedException("WaveOut");
}
int volume = 0;
WavMethods.waveOutGetVolume(m_pWavDevHandle,out volume);
left = (ushort)(volume & 0x0000ffff);
right = (ushort)(volume >> 16);
}
#endregion
#region method SetVolume
/// <summary>
/// Sets audio output volume.
/// </summary>
/// <param name="left">Left channel volume level.</param>
/// <param name="right">Right channel volume level.</param>
/// <exception cref="ObjectDisposedException">Is raised when this object is disposed and this method is accessed.</exception>
public void SetVolume(ushort left,ushort right)
{
if(m_IsDisposed){
throw new ObjectDisposedException("WaveOut");
}
WavMethods.waveOutSetVolume(m_pWavDevHandle,(right << 16 | left & 0xFFFF));
}
#endregion
#region Properties Implementation
/// <summary>
/// Gets all available output audio devices.
/// </summary>
public static WavOutDevice[] Devices
{
get{
List<WavOutDevice> retVal = new List<WavOutDevice>();
// Get all available output devices and their info.
int devicesCount = WavMethods.waveOutGetNumDevs();
for(int i=0;i<devicesCount;i++){
WAVEOUTCAPS pwoc = new WAVEOUTCAPS();
if(WavMethods.waveOutGetDevCaps((uint)i,ref pwoc,Marshal.SizeOf(pwoc)) == MMSYSERR.NOERROR){
retVal.Add(new WavOutDevice(i,pwoc.szPname,pwoc.wChannels));
}
}
return retVal.ToArray();
}
}
/// <summary>
/// Gets if this object is disposed.
/// </summary>
public bool IsDisposed
{
get{ return m_IsDisposed; }
}
/// <summary>
/// Gets current output device.
/// </summary>
/// <exception cref="">Is raised when this object is disposed and this property is accessed.</exception>
public WavOutDevice OutputDevice
{
get{
if(m_IsDisposed){
throw new ObjectDisposedException("WaveOut");
}
return m_pOutDevice;
}
}
/// <summary>
/// Gets number of samples per second.
/// </summary>
/// <exception cref="">Is raised when this object is disposed and this property is accessed.</exception>
public int SamplesPerSec
{
get{
if(m_IsDisposed){
throw new ObjectDisposedException("WaveOut");
}
return m_SamplesPerSec;
}
}
/// <summary>
/// Gets number of buts per sample.
/// </summary>
/// <exception cref="">Is raised when this object is disposed and this property is accessed.</exception>
public int BitsPerSample
{
get{
if(m_IsDisposed){
throw new ObjectDisposedException("WaveOut");
}
return m_BitsPerSample;
}
}
/// <summary>
/// Gets number of channels.
/// </summary>
/// <exception cref="">Is raised when this object is disposed and this property is accessed.</exception>
public int Channels
{
get{
if(m_IsDisposed){
throw new ObjectDisposedException("WaveOut");
}
return m_Channels;
}
}
/// <summary>
/// Gets one smaple block size in bytes.
/// </summary>
/// <exception cref="">Is raised when this object is disposed and this property is accessed.</exception>
public int BlockSize
{
get{
if(m_IsDisposed){
throw new ObjectDisposedException("WaveOut");
}
return m_BlockSize;
}
}
/// <summary>
/// Gets if wav player is currently playing something.
/// </summary>
/// <exception cref="">Is raised when this object is disposed and this property is accessed.</exception>
public bool IsPlaying
{
get{
if(m_IsDisposed){
throw new ObjectDisposedException("WaveOut");
}
if(m_pPlayItems.Count > 0){
return true;
}
else{
return false;
}
}
}
#endregion
}
}
请问有什么好的方法可以解决这个问题吗？？
