c# - 使用 C# 在特定设备中播放声音

Question

我的问题是如果我想创建 3 个按钮并且我有 3 个声卡并且每个按钮都与声卡相关(例如 button1 与声卡 1 相关......)并且当我点击 button1 我想从与声卡1相关的扬声器中听到声音(button2和button3相同。

我的 friend 给了我两个代码:第一个使用Naudio它有效但有效我仍然无法在三个声卡中播放声音。我的意思是当我安装三个声卡时只有一个声卡工作。就好像程序总是从三个外部声卡中选择一个默认声卡。

第二个使用 DirectX，它适用于我，但我不明白他如何调用设备编号。我的意思是在使用 NAudio 的代码中有“例如 devicenumber= 1”。我需要知道如何为每个按钮指定一个设备(例如，当我单击按钮 1 时，声音将在声卡 1 中播放)？

我想知道如何更正两个代码中的一个以及如何在第二个代码中指定“设备”。

这是 Form2 的代码(来自使用 NAudio 的项目)你可以注意到它是如何为每个按钮指定一个设备的，但不幸的是它导致了提到的问题:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using NAudio.Wave;
using NAudio.CoreAudioApi;
namespace AudioWithNAudio
{
    public partial class Form2 : Form
    {
        string fileName = null;
        WaveOut wave = null;
        private NAudio.Wave.WaveFileReader waveReader = null;
        private NAudio.Wave.DirectSoundOut output = null;
       
        public Form2()
        {
            InitializeComponent();
        }
        private void Form2_Load(object sender, EventArgs e)
        {
            hideButtons();
             fileName = ("alarm.wav");
             detectDevices();          
             
        }
        public void hideButtons()
        {
        
            bttnAudioDevice1.Visible = false;
            bttnAudioDevice2.Visible = false;
            bttnAudioDevice3.Visible = false;
            bttnAudioDevice4.Visible = false;
            bttnAudioDevice5.Visible = false;
        }
        public void detectDevices()
        {
            int waveOutDevices = WaveOut.DeviceCount;
            switch (waveOutDevices)
            {
                case 1:
                    bttnAudioDevice1.Visible = true;
                    break;
                case 2:
                    bttnAudioDevice2.Visible = true;
                    bttnAudioDevice1.Visible = true;
                    break;
                case 3:
                      bttnAudioDevice2.Visible = true;
                    bttnAudioDevice1.Visible = true;
                    bttnAudioDevice3.Visible = true;
                    break;
                case 4:
                         bttnAudioDevice2.Visible = true;
                    bttnAudioDevice1.Visible = true;
                    bttnAudioDevice3.Visible = true;
                    bttnAudioDevice4.Visible = true;
                    break;
                case 5:
                            bttnAudioDevice2.Visible = true;
                    bttnAudioDevice1.Visible = true;
                    bttnAudioDevice3.Visible = true;
                    bttnAudioDevice4.Visible = true;
                    bttnAudioDevice5.Visible = true;
                    break;
            }
        }
        private void bttnAudioDevice1_Click(object sender, EventArgs e)
        {
            wave = new WaveOut();
            wave.DeviceNumber = 0;
            playSound();
        }
        private void bttnAudioDevice2_Click(object sender, EventArgs e)
        {
            wave = new WaveOut();
            wave.DeviceNumber = 1;
            playSound();
        }
        private void bttnAudioDevice3_Click(object sender, EventArgs e)
        {
            wave.DeviceNumber = 2;
            playSound();
        }
        private void bttnAudioDevice4_Click(object sender, EventArgs e)
        {
            wave.DeviceNumber = 3;
            playSound();
        }
        private void bttnAudioDevice5_Click(object sender, EventArgs e)
        {
            wave.DeviceNumber = 4;
            playSound();
        }
        public void playSound()
        {
            disposeWave();// stop previous sounds before starting
            waveReader = new NAudio.Wave.WaveFileReader(fileName);
            output = new NAudio.Wave.DirectSoundOut();
           
            output.Init(new NAudio.Wave.WaveChannel32(waveReader));
            output.Play();
        }
        public void disposeWave()
        {
            if (output != null)
            {
                if (output.PlaybackState == NAudio.Wave.PlaybackState.Playing)
                {
                    output.Stop();
                    output.Dispose();
                    output = null;
                }
            }
            if (wave != null)
            {
                wave.Dispose();
                wave = null;
            }
        }
        private void Form2_FormClosing(object sender, FormClosingEventArgs e)
        {
            disposeWave();
        }
        private void bttnStop_Click(object sender, EventArgs e)
        {
            if (output != null)
            {
                if (output.PlaybackState == NAudio.Wave.PlaybackState.Playing)
                {
                    output.Stop();
                 
                }
            }
        }
    }
}

这是 Form1 的代码(来自使用 DirectX 的项目):

using System;
using System.Windows.Forms;
using Microsoft.DirectX.DirectSound;
using DirectSound = Microsoft.DirectX.DirectSound;
namespace DirectSoundPlay
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            ReSizeControls();
        }
        private void playToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (listBox2.SelectedItems.Count == 0)
                return;
            if (listBox2.SelectedItems.Count > 1)
            {
                MessageBox.Show("Too many SelectedItems");
                return;
            }
            ClassAudioDevice ad = listBox2.SelectedItem as ClassAudioDevice;
            if (ad == null)
            {
                MessageBox.Show("SelectedItem is not a ClassAudioDevice");
                return;
            }
            DirectSound.Device Device = new DirectSound.Device(ad.DriverGuid);
            Device.SetCooperativeLevel(this.Handle, DirectSound.CooperativeLevel.Priority);
            DirectSound.Buffer AudioBuffer = new DirectSound.Buffer("C:\\Windows\\Media\\notify.wav", Device);
            AudioBuffer.Play(0, BufferPlayFlags.Default);
        }
        private void exitToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Close();
        }
        private void Form1_SizeChanged(object sender, EventArgs e)
        {
            ReSizeControls();
        }
        private void ReSizeControls()
        {
            int w = ClientSize.Width >> 1;
            listBox1.Width = w - 1;
            listBox2.Width = w - 1;
            listBox1.Height = ClientSize.Height;
            listBox2.Height = ClientSize.Height;
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            DirectSound.DevicesCollection DevicesList = new DirectSound.DevicesCollection();
            DirectSound.CaptureDevicesCollection CaptureDevicesList = new DirectSound.CaptureDevicesCollection();
            ClassAudioDevice ad;
            //
            foreach (DirectSound.DeviceInformation di in CaptureDevicesList)
            {
                ad = new ClassAudioDevice();
                ad.Description = di.Description;
                ad.DriverGuid = di.DriverGuid;
                listBox1.Items.Add(ad);
            }
            foreach (DirectSound.DeviceInformation di in DevicesList)
            {
                ad = new ClassAudioDevice();
                ad.Description = di.Description;
                ad.DriverGuid = di.DriverGuid;
                listBox2.Items.Add(ad);
            }
        }
    }
}
 

这是 ClassAudioDevice 的代码(来自同一个项目):

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace DirectSoundPlay
{
    class ClassAudioDevice
    {
        public string Description = "";
 
        public Guid DriverGuid = new Guid();
 
        public override string ToString()
        {
            return Description;
        }
    }
}

Answer 1

在您的按钮单击处理程序中，您正在创建一个 WaveOut 设备，设置其设备编号，然后您的 playSound 函数使用完全不同的 IWavePlayer(DirectSoundOut 的一个实例)播放声音。您的代码目前存在几个问题(特别是并发播放)，但我会首先将设备编号传递给 playSound 函数。

public void playSound(int deviceNumber)
{
    disposeWave();// stop previous sounds before starting
    waveReader = new NAudio.Wave.WaveFileReader(fileName);
    var waveOut = new NAudio.Wave.WaveOut();
    waveOut.DeviceNumber = deviceNumber;
    waveOut.Init(waveReader);
    waveOut.Play();
}