How to play WAV file from Embedded Resources with NAudio?

0
votes

I'm using C#, WPF, and NAudio to play a wav file.

I have sound_1.wav in the Resources folder and included in project. Once compiled, it exports the exe and resources to a folder and plays the wav from a path on the hard drive.

string sound1 = "Resources\\sound_1.wav";

NAudio.Wave.WaveFileReader wav = new NAudio.Wave.WaveFileReader(sound1);
WaveOutEvent output = new WaveOutEvent();
output.Init(wav);
output.Play();

But I would like to embed the wav file in the exe and use something like:

UnmanagedMemoryStream sound1 = Properties.Resources.sound_1; //embedded resource
NAudio.Wave.WaveFileReader wav = new NAudio.Wave.WaveFileReader(sound1);

Embedded Resources

How can I get that to play through WaveFileReader? It only accepts string path.

Solutions

This works, but the sound plays in slow motion and sounds like reverb.

UnmanagedMemoryStream sound1 = Properties.Resources.sound_1;

WaveIn wavin = new WaveIn();
NAudio.Wave.RawSourceWaveStream wav = new NAudio.Wave.RawSourceWaveStream(sound1, wavin.WaveFormat);         
WaveOutEvent output = new WaveOutEvent();
output.Init(wav);
output.Play();

This works with loud pop at the end of sound.

Convert Stream to Byte Array
https://stackoverflow.com/a/1080445/6806643

byte[] b = ReadToEnd(sound1);

WaveStream wav = new RawSourceWaveStream(new MemoryStream(b), new WaveFormat(44100, 16, 2));
WaveOutEvent output = new WaveOutEvent();
output.Init(wav);
output.Play();
1
c#naudio
Have you tried extracting the embedded resource to a byte array & then creating a WaveFileReader using a MemoryStream – PaulF
@PaulF It still seems to require a string path. – Matt McManis
I am not sure what you mean - WaveFileReader accepts a Stream as a constructor - this can be a MemoryStream created from a byte array. You create the byte array by extracting the embedded resource. – PaulF
@PaulF They use String filename. When I change it to UnmanagedMemoryStream filename to extract the embedded resource it still requires String for a.GetManifestResourceStream(filename). – Matt McManis
@MattMcManis: doesn't it work to pass sound1 to GetManifestResourceStream like in the first link PaulF (accepted answer by Rotem) has provided? – oliver

1 Answers

1
votes

I figured out how to make it work.

The problem with this solution is high memory usage.

WAV

// embedded resource sound.wav

UnmanagedMemoryStream sound = Properties.Resources.sound;

MemoryStream ms = new MemoryStream(StreamToBytes(sound));

WaveStream ws = new WaveFileReader(ms);

WaveOutEvent output = new WaveOutEvent();

output.PlaybackStopped += new EventHandler<StoppedEventArgs>(Media_Ended);
output.Init(ws);
output.Play();

MP3

// embedded resource sound.mp3

MemoryStream sound = new MemoryStream(Properties.Resources.sound);

MemoryStream ms = new MemoryStream(StreamToBytes(sound));

WaveStream ws = new Mp3FileReader(ms);

WaveOutEvent output = new WaveOutEvent();

output.PlaybackStopped += new EventHandler<StoppedEventArgs>(Media_Ended);
output.Init(ws);
output.Play();

Stream to Byte Array

https://stackoverflow.com/a/1080445/6806643

I used this to convert MemoryStream to byte[], or else it will crash if 2 sounds play at the same time with Exception "Not a WAVE file - no RIFF header".

Dispose

Doesn't seem to have any affect on reducing RAM.

public static void Media_Ended(object sender, EventArgs e)
{
    if (output.PlaybackState == PlaybackState.Stopped)
    {
        if (ms != null)
        {
            ms.Close();
            ms.Flush();
        }
        if (ws != null)
        {
            ws.Close();
        }
        if (output != null)
        {
            output.Dispose();
        }
    }
}