Sort of, although if you look at the example code I showed earlier, the looper comes after the mixingmultiplexingsampleprovider. You have to do that if you want it to only loop after the longest file has played
Mark
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New Post: Need a function urgently
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New Post: AcmNotPossible calling acmStreamOpen
What's the suggested action for the players of my game? Should I follow these steps?
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New Post: AcmNotPossible calling acmStreamOpen
hi vaughands, what OS are you running on?
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New Post: Need a function urgently
I did that first, like you said, but the question then is, is how will I access the position property, since the metering sample provider doesn't have that.. (and the mixing sample provider is created with an array of metering sample providers..)
On Dec 23, 2012 9:36 PM, "markheath" <notifications@codeplex.com> wrote:
From: markheath
Sort of, although if you look at the example code I showed earlier, the looper comes after the mixingmultiplexingsampleprovider. You have to do that if you want it to only loop after the longest file has played
Mark
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Commented Issue: Playing Short Audio Files [16377]
I'm writing a game and I'd like to use NAudio to add sound to it. I followed a few examples and was rather pleased with NAudio's API and performance.
I ran into the following issue: NAudio will not play short audio files. I've used WaveChannel32.Length to get the following numbers.
Files with length 755712 or less will not play.
Files with length 5935104 do play.
I'm not sure where the exact limit is. There are no exceptions thrown. I was hoping to use NAudio to play files of about 1 second long. Is anyone else having this issue? Is there a fix? Do I need to find a different library?
Comments: Hehe, yes, it is a console app. But I'm running a 3D engine from there. The WaveOutEvent fixed this issue. Thanks once again. Now I have my short and long files loaded in, and I've linked them up to events in the game. Every time the mouse is moved over a button, I do this: sample.Position = 0; if(!isAdded) { isAdded = true; mixer.AddMixerInput(sample as ISampleProvider); } When the mouse is removed from the button it was over (guaranteed to occur), I do this: if(isAdded) { isAdded = false; mixer.RemoveMixerInput(sample); } Where mixer = MixingSampleProvider and sample = AudioFileReader. It seems that this works only once. The sample cannot be reset and re-added to the mixer. Can you help me? Additionally, at initialization, I do this: waveOutDevice = new WaveOutEvent(); ISampleProvider samp = new AudioFileReader(<AudioFile>); mixer = new MixingSampleProvider(new List<ISampleProvider> { samp }); waveOutDevice.Init(new SampleToWaveProvider(mixer)); waveOutDevice.PlaybackStopped += PlaybackStopped; waveOutDevice.Play(); I've found that creating a MixingSampleProvider with an empty List<ISampleProvider> causes a null-ref exception. So I've just added a sample at start-up. There's nothing wrong with a start-up jingle. But perhaps this is related to the issue?
I ran into the following issue: NAudio will not play short audio files. I've used WaveChannel32.Length to get the following numbers.
Files with length 755712 or less will not play.
Files with length 5935104 do play.
I'm not sure where the exact limit is. There are no exceptions thrown. I was hoping to use NAudio to play files of about 1 second long. Is anyone else having this issue? Is there a fix? Do I need to find a different library?
Comments: Hehe, yes, it is a console app. But I'm running a 3D engine from there. The WaveOutEvent fixed this issue. Thanks once again. Now I have my short and long files loaded in, and I've linked them up to events in the game. Every time the mouse is moved over a button, I do this: sample.Position = 0; if(!isAdded) { isAdded = true; mixer.AddMixerInput(sample as ISampleProvider); } When the mouse is removed from the button it was over (guaranteed to occur), I do this: if(isAdded) { isAdded = false; mixer.RemoveMixerInput(sample); } Where mixer = MixingSampleProvider and sample = AudioFileReader. It seems that this works only once. The sample cannot be reset and re-added to the mixer. Can you help me? Additionally, at initialization, I do this: waveOutDevice = new WaveOutEvent(); ISampleProvider samp = new AudioFileReader(<AudioFile>); mixer = new MixingSampleProvider(new List<ISampleProvider> { samp }); waveOutDevice.Init(new SampleToWaveProvider(mixer)); waveOutDevice.PlaybackStopped += PlaybackStopped; waveOutDevice.Play(); I've found that creating a MixingSampleProvider with an empty List<ISampleProvider> causes a null-ref exception. So I've just added a sample at start-up. There's nothing wrong with a start-up jingle. But perhaps this is related to the issue?
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Commented Issue: Playing Short Audio Files [16377]
I'm writing a game and I'd like to use NAudio to add sound to it. I followed a few examples and was rather pleased with NAudio's API and performance.
I ran into the following issue: NAudio will not play short audio files. I've used WaveChannel32.Length to get the following numbers.
Files with length 755712 or less will not play.
Files with length 5935104 do play.
I'm not sure where the exact limit is. There are no exceptions thrown. I was hoping to use NAudio to play files of about 1 second long. Is anyone else having this issue? Is there a fix? Do I need to find a different library?
Comments: you will need to set samp.Position = 0 before re-adding it to the mixer. the constructor that takes a list of inputs needs at least one because it needs to know what WaveFormat we are using. I think there is another constructor you use.
I ran into the following issue: NAudio will not play short audio files. I've used WaveChannel32.Length to get the following numbers.
Files with length 755712 or less will not play.
Files with length 5935104 do play.
I'm not sure where the exact limit is. There are no exceptions thrown. I was hoping to use NAudio to play files of about 1 second long. Is anyone else having this issue? Is there a fix? Do I need to find a different library?
Comments: you will need to set samp.Position = 0 before re-adding it to the mixer. the constructor that takes a list of inputs needs at least one because it needs to know what WaveFormat we are using. I think there is another constructor you use.
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Commented Issue: Playing Short Audio Files [16377]
I'm writing a game and I'd like to use NAudio to add sound to it. I followed a few examples and was rather pleased with NAudio's API and performance.
I ran into the following issue: NAudio will not play short audio files. I've used WaveChannel32.Length to get the following numbers.
Files with length 755712 or less will not play.
Files with length 5935104 do play.
I'm not sure where the exact limit is. There are no exceptions thrown. I was hoping to use NAudio to play files of about 1 second long. Is anyone else having this issue? Is there a fix? Do I need to find a different library?
Comments: Setting Position = 0; before re-adding the AudioFileReader to the MixingSampleProvider doesn't fix it. I already did that in my original code. I can only play an AudioFileReader once. Additionally, I peeked at the WaveFormat that creating a MixingSampleProvider with a sample creates and produced one in code. Like this: WaveFormat format = WaveFormat.CreateIeeeFloatWaveFormat(44100, 2); And then I fed format to the MixingSampleProvider constructor. The result is no sound at all. I've inspected the WaveFormat made with the sample and compared it to the WaveFormat made with CreateIeeeFloatWaveFormat. They appear identical. I am at a loss on both points. Do you have any ideas?
I ran into the following issue: NAudio will not play short audio files. I've used WaveChannel32.Length to get the following numbers.
Files with length 755712 or less will not play.
Files with length 5935104 do play.
I'm not sure where the exact limit is. There are no exceptions thrown. I was hoping to use NAudio to play files of about 1 second long. Is anyone else having this issue? Is there a fix? Do I need to find a different library?
Comments: Setting Position = 0; before re-adding the AudioFileReader to the MixingSampleProvider doesn't fix it. I already did that in my original code. I can only play an AudioFileReader once. Additionally, I peeked at the WaveFormat that creating a MixingSampleProvider with a sample creates and produced one in code. Like this: WaveFormat format = WaveFormat.CreateIeeeFloatWaveFormat(44100, 2); And then I fed format to the MixingSampleProvider constructor. The result is no sound at all. I've inspected the WaveFormat made with the sample and compared it to the WaveFormat made with CreateIeeeFloatWaveFormat. They appear identical. I am at a loss on both points. Do you have any ideas?
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New Post: AcmNotPossible calling acmStreamOpen
Windows XP
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New Post: Network chat with audio from multiple users simultaneously.
Hello,
I'm working on an application that is essentially a network chat system, but I need to support multiple users talking at the same time. After some trial and error, I came up with a method that seems to be working well, but I feel like there is probably a better way, and I'm running into a small issue with different sound cards.
Here's how I have it working now: When the client starts up, it creates a pool of WaveOut instances, each with their own BufferedWaveProvider. The client currently creates a pool of 10 of these. These 10 WaveOuts are all assigned to the same audio device.
When sending audio, each client tags the encoded audio data with a unique client ID and sends it to the server. The server forwards this data to each other user in the chat. The client maintains a mapping of each client ID to one of the 10 BufferedWaveProviders. When the client receives audio data, it looks at the sender's client ID, looks it up in the map, and then feeds the samples to the associated BufferedWaveProvider. This way, if two remote clients are talking at once, their audio does not get intermingled.
Now for the problem ... this has been working great on my development machine, but when I installed the client on another computer (a netbook) an exception was thrown when it tried to create the 10 WaveOuts. The exception happened when it tried to Init() the WaveOut. The error was that it was "already allocated." If I reduced the number of WaveOuts to 5, the problem went away. I assume this is a sound driver limitation.
So, I'm wondering if there's a better way to handle this situation where there are multiple streams from distinct sources that need to be fed to the sound card independently. If not, I think I would at least need a way to determine the maximum number of WaveOuts that can be assigned to a single audio device. I see that the GetCapabilities() method can tell me the number of channels, but it doesn't seem to return a maximum number of wave streams the card can mix.
I know I could just keep constructing WaveOuts until I get the exception, but that seems rather hacky.
Any insight or pointers would be greatly appreciated!
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New Post: Play mp3 from stream in real-time
Hello. My english bad, sorry.
I need gelp with my player.
I have link "http://cs5880.userapi.com/u9002353/audios/5080e5649b40.mp3" (example)
How i can play this track in real-time? (after 100-500ms? +-)
private MemoryStream ms; private WaveOut waveOut;
It's first thread:
using (var stream = WebRequest.Create(url).GetResponse().GetResponseStream()) { byte[] buffer = newbyte[1024*64]; int read; while ((read = stream.Read(buffer, 0, buffer.Length)) > 0) { var pos = ms.Position; ms.Position = ms.Length; ms.Write(buffer, 0, read); ms.Position = pos; }
Last thread:
ms.Position = 0;
using (var mp3FileReader = new Mp3FileReader(ms))
using (var waveFormatConv = WaveFormatConversionStream.CreatePcmStream(mp3FileReader))
using (var blockAlignedStream = new BlockAlignReductionStream(waveFormatConv))
{
waveOut = new WaveOut();
waveOut.Init(blockAlignedStream);
waveOut.Play();
while (!taskWaveStop)
{
Thread.Sleep(1 0);
}
}
But id3tag always in random position. If position of tag > my buffer, then i will be have random error.
What i do?
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New Post: Play mp3 from stream in real-time
Look at the NAudioDemo application source code. There is an example of playing a streaming MP3 file using the AcmMp3FrameDecompressor and the BufferedWaveProvider.
Mark
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New Post: Network chat with audio from multiple users simultaneously.
It would be more appropriate to mix the different streams in software and have a single WaveOut. I tend to write my own mixer for these purposes. NAudio does have a bunch of mixers such as MixingSampleProvider, MixingWaveProvider32 and WaveMixerStream32. I've recently updated the MixingSampleProvider to have an option to always read fully, making it easier to work with this type of situtation.
Basically, the idea is that you would go from your BufferedWaveProviders into 32 bit floating point audio streams. Then each input goes into the mixer and the single WaveOut device plays from the mixer. You need to make sure that the mixer is set up to never 'end' (i.e. even if there is no incoming data, it should just blank out the buffer and return it).
Hope this points you in the right direction
Mark
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Commented Issue: Playing Short Audio Files [16377]
I'm writing a game and I'd like to use NAudio to add sound to it. I followed a few examples and was rather pleased with NAudio's API and performance.
I ran into the following issue: NAudio will not play short audio files. I've used WaveChannel32.Length to get the following numbers.
Files with length 755712 or less will not play.
Files with length 5935104 do play.
I'm not sure where the exact limit is. There are no exceptions thrown. I was hoping to use NAudio to play files of about 1 second long. Is anyone else having this issue? Is there a fix? Do I need to find a different library?
Comments: It may be that you are running out of input data. If Read ever returns 0 then the playback automatically ends. One thing that I didn't get round to adding to MixingSampleProvider was an automatic way to ensure Read always returns the number of samples requested. I've checked in a new property (ReadFully) that you can set to true to do this. Or you can have create a trivial SilenceSampleProvider which is a mixer input that always returns 0s, and then playback will never end until you explicitly request it to.
I ran into the following issue: NAudio will not play short audio files. I've used WaveChannel32.Length to get the following numbers.
Files with length 755712 or less will not play.
Files with length 5935104 do play.
I'm not sure where the exact limit is. There are no exceptions thrown. I was hoping to use NAudio to play files of about 1 second long. Is anyone else having this issue? Is there a fix? Do I need to find a different library?
Comments: It may be that you are running out of input data. If Read ever returns 0 then the playback automatically ends. One thing that I didn't get round to adding to MixingSampleProvider was an automatic way to ensure Read always returns the number of samples requested. I've checked in a new property (ReadFully) that you can set to true to do this. Or you can have create a trivial SilenceSampleProvider which is a mixer input that always returns 0s, and then playback will never end until you explicitly request it to.
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New Post: AcmNotPossible calling acmStreamOpen
OK, use the NAudioDemo application to examine what ACM codecs you do have. XP usually comes with an MP3 decoder so I'm surprised you don't see one.
Mark
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New Post: Play mp3 from stream in real-time
Also, can I ask where you saw the sample code that uses WaveFormatConversionStream and BlockAlignReductionStream? This has not been necessary for a very long time, but it seems everyone is still using it. If possible I'd like to update the documentation that is showing the use of this.
thanks
Mark
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New Post: Network chat with audio from multiple users simultaneously.
Thanks Mark, I'll dig around and see if I can figure out how to do what you're suggesting.
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New Post: Play mp3 from stream in real-time
Thanks! I'll try it.
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New Post: AcmNotPossible calling acmStreamOpen
This PC has one and I can assure you the demo application works to play a audio file. (I just tried). So I'm not sure why MY Mp3FileReader would crash on the same file. :(
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New Post: Network chat with audio from multiple users simultaneously.
Hi Mark,
I seem to have this working correctly ... at least it's mixing the streams using a MixingSampleProvider. However, the audio quality suffers whenever there is more than one stream being fed to the mixer. It's hard to describe how the quality suffers ... sort of sounds like there's some clipping or truncation of the samples when they're mixed. Almost a "stuttering" kind of sound. This only happens if I use a codec before sending the data over the wire. If I just send the raw data I get from the waveIn, then the mixing works great with no quality issues. The only codec I've tried so far is Speex, both narrow band and ultra wide band, using the classes from the Network Chat demo.
In your reply above, you mentioned that the MixingSampleProvider has an "option" to always read fully. I wasn't able to find that setting, and I'm wondering if that might be the issue. How is that option turned on?
You also mentioned that I have to make sure that the mixer is set up to never end. How is that done? (Though it seems like it might already be set up that way, since I can connect and disconnect chat clients and I never have to "restart" the mixer.)
Thanks for your help and the great piece of software.
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New Post: AcmNotPossible calling acmStreamOpen
is your OS 64 bit and your app running as a 64 bit process by any chance?
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