private void button1_Click(object sender, RoutedEventArgs e)
{
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.DefaultExt = ".wav";
dlg.Filter = "Wave files|*.wav";
if (dlg.ShowDialog() == true)
{
var stream = new IeeeStream(new NAudioSourceStream(new WaveFileReader(dlg.FileName)));
mixer.Clear();
mixer.Add(stream);
lblFile.Content = dlg.FileName;
fileSampleRateLabel.Content = stream.Properties.SampleRate;
sliderSampleRate.Value = stream.Properties.SampleRate;
}
}
static void Process(Dictionary <string, double> mapping, DirectoryInfo indir, DirectoryInfo outdir)
{
Dictionary <FileInfo, double> fileMapping = new Dictionary <FileInfo, double>();
foreach (string fileNamePattern in mapping.Keys)
{
double factor = mapping[fileNamePattern];
foreach (FileInfo fileInfo in indir.EnumerateFiles(fileNamePattern))
{
fileMapping.Add(fileInfo, factor);
}
}
Parallel.ForEach <FileInfo>(fileMapping.Keys, (fileInfo) => {
double factor = fileMapping[fileInfo];
FileInfo outputFileInfo = new FileInfo(Path.Combine(outdir.FullName, fileInfo.Name));
if (outputFileInfo.Exists)
{
Console.WriteLine(fileInfo.Name + " SKIP (file already existing)");
return;
}
Console.WriteLine(fileInfo.Name);
try
{
IAudioStream inputStream = AudioStreamFactory.FromFileInfoIeee32(fileInfo);
IAudioStream resamplingStream = new ResamplingStream(inputStream, ResamplingQuality.VeryHigh, factor);
MixerStream sampleRateResetStream = new MixerStream(resamplingStream.Properties.Channels, inputStream.Properties.SampleRate);
sampleRateResetStream.Add(resamplingStream);
IAudioStream outputStream = sampleRateResetStream;
AudioStreamFactory.WriteToFile(outputStream, outputFileInfo.FullName);
}
catch (Exception e)
{
Console.WriteLine("Error processing " + fileInfo.Name + ": " + e.Message);
}
});
}
private void btnPlay_Click(object sender, RoutedEventArgs e)
{
if (wavePlayer != null)
{
wavePlayer.Dispose();
}
debugStreamController = new DebugStreamController();
MixerStream mixer = new MixerStream(2, 44100);
foreach (AudioTrack audioTrack in trackListBox.Items)
{
WaveFileReader reader = new WaveFileReader(audioTrack.FileInfo.FullName);
IeeeStream channel = new IeeeStream(new DebugStream(new NAudioSourceStream(reader), debugStreamController));
//ResamplingStream res = new ResamplingStream(new DebugStream(channel, debugStreamController), ResamplingQuality.SincBest, 22050);
TimeWarpStream warp = new TimeWarpStream(new DebugStream(channel, debugStreamController));
//warp.Mappings.Add(new TimeWarp { From = new TimeSpan(audioTrack.Length.Ticks / 10 * 4), To = new TimeSpan(audioTrack.Length.Ticks / 9) });
//warp.Mappings.Add(new TimeWarp { From = new TimeSpan(audioTrack.Length.Ticks / 10 * 5), To = new TimeSpan(audioTrack.Length.Ticks / 9 * 2) });
//warp.Mappings.Add(new TimeWarp { From = new TimeSpan(audioTrack.Length.Ticks / 10 * 10), To = new TimeSpan(audioTrack.Length.Ticks / 9 * 3) });
// necessary to control each track individually
VolumeControlStream volumeControl = new VolumeControlStream(new DebugStream(warp, debugStreamController))
{
Mute = audioTrack.Mute,
Volume = audioTrack.Volume
};
// when the AudioTrack.Mute property changes, just set it accordingly on the audio stream
audioTrack.MuteChanged += new EventHandler <ValueEventArgs <bool> >(
delegate(object vsender, ValueEventArgs <bool> ve) {
volumeControl.Mute = ve.Value;
});
// when the AudioTrack.Solo property changes, we have to react in different ways:
audioTrack.SoloChanged += new EventHandler <ValueEventArgs <bool> >(
delegate(object vsender, ValueEventArgs <bool> ve) {
AudioTrack senderTrack = (AudioTrack)vsender;
bool isOtherTrackSoloed = false;
foreach (AudioTrack vaudioTrack in trackListBox.Items)
{
if (vaudioTrack != senderTrack && vaudioTrack.Solo)
{
isOtherTrackSoloed = true;
break;
}
}
/* if there's at least one other track that is soloed, we set the mute property of
* the current track to the opposite of the solo property:
* - if the track is soloed, we unmute it
* - if the track is unsoloed, we mute it
*/
if (isOtherTrackSoloed)
{
senderTrack.Mute = !ve.Value;
}
/* if this is the only soloed track, we mute all other tracks
* if this track just got unsoloed, we unmute all other tracks
*/
else
{
foreach (AudioTrack vaudioTrack in trackListBox.Items)
{
if (vaudioTrack != senderTrack && !vaudioTrack.Solo)
{
vaudioTrack.Mute = ve.Value;
}
}
}
});
// when the AudioTrack.Volume property changes, just set it accordingly on the audio stream
audioTrack.VolumeChanged += new EventHandler <ValueEventArgs <float> >(
delegate(object vsender, ValueEventArgs <float> ve) {
volumeControl.Volume = ve.Value;
});
mixer.Add(new DebugStream(volumeControl));
}
VolumeControlStream volumeControlStream = new VolumeControlStream(new DebugStream(mixer, debugStreamController))
{
Volume = (float)volumeSlider.Value
};
VolumeMeteringStream volumeMeteringStream = new VolumeMeteringStream(new DebugStream(volumeControlStream, debugStreamController), 5000);
volumeMeteringStream.StreamVolume += new EventHandler <StreamVolumeEventArgs>(meteringStream_StreamVolume);
VolumeClipStream volumeClipStream = new VolumeClipStream(new DebugStream(volumeMeteringStream, debugStreamController));
playbackStream = volumeClipStream;
wavePlayer = new WaveOut();
wavePlayer.DesiredLatency = 250;
wavePlayer.Init(new NAudioSinkStream(new DebugStream(playbackStream, debugStreamController)));
// master volume setting
volumeSlider.ValueChanged += new RoutedPropertyChangedEventHandler <double>(
delegate(object vsender, RoutedPropertyChangedEventArgs <double> ve) {
volumeControlStream.Volume = (float)ve.NewValue;
});
lblTotalPlaybackTime.Content = TimeUtil.BytesToTimeSpan(playbackStream.Length, playbackStream.Properties);
playbackSeeker.Maximum = TimeUtil.BytesToTimeSpan(playbackStream.Length, playbackStream.Properties).TotalSeconds;
wavePlayer.Play();
}
private void AddTrack(AudioTrack audioTrack)
{
if (audioTrack.SourceProperties.SampleRate > audioMixer.SampleRate)
{
// The newly added track has a higher samplerate than the current tracks, so we adjust
// the processing samplerate to the highest rate
ChangeMixingSampleRate(audioTrack.SourceProperties.SampleRate);
}
IAudioStream input = audioTrack.CreateAudioStream();
IAudioStream baseStream = new TolerantStream(new BufferedStream(input, 1024 * 256 * input.SampleBlockSize, true));
OffsetStream offsetStream = new OffsetStream(baseStream)
{
Offset = TimeUtil.TimeSpanToBytes(audioTrack.Offset, baseStream.Properties)
};
audioTrack.OffsetChanged += new EventHandler <ValueEventArgs <TimeSpan> >(
delegate(object sender, ValueEventArgs <TimeSpan> e) {
offsetStream.Offset = TimeUtil.TimeSpanToBytes(e.Value, offsetStream.Properties);
audioMixer.UpdateLength();
});
// Upmix mono inputs to dual channel stereo or downmix surround to allow channel balancing
// TODO add better multichannel stream support and allow balancing of surround
IAudioStream mixToStereoStream = offsetStream;
if (mixToStereoStream.Properties.Channels == 1)
{
mixToStereoStream = new MonoStream(mixToStereoStream, 2);
}
else if (mixToStereoStream.Properties.Channels > 2)
{
mixToStereoStream = new SurroundDownmixStream(mixToStereoStream);
}
// control the track phase
PhaseInversionStream phaseInversion = new PhaseInversionStream(mixToStereoStream)
{
Invert = audioTrack.InvertedPhase
};
MonoStream monoStream = new MonoStream(phaseInversion, phaseInversion.Properties.Channels)
{
Downmix = audioTrack.MonoDownmix
};
// necessary to control each track individually
VolumeControlStream volumeControl = new VolumeControlStream(monoStream)
{
Mute = audioTrack.Mute,
Volume = audioTrack.Volume,
Balance = audioTrack.Balance
};
// when the AudioTrack.Mute property changes, just set it accordingly on the audio stream
audioTrack.MuteChanged += new EventHandler <ValueEventArgs <bool> >(
delegate(object vsender, ValueEventArgs <bool> ve) {
volumeControl.Mute = ve.Value;
});
// when the AudioTrack.Solo property changes, we have to react in different ways:
audioTrack.SoloChanged += new EventHandler <ValueEventArgs <bool> >(
delegate(object vsender, ValueEventArgs <bool> ve) {
AudioTrack senderTrack = (AudioTrack)vsender;
bool isOtherTrackSoloed = false;
foreach (AudioTrack vaudioTrack in trackList)
{
if (vaudioTrack != senderTrack && vaudioTrack.Solo)
{
isOtherTrackSoloed = true;
break;
}
}
/* if there's at least one other track that is soloed, we set the mute property of
* the current track to the opposite of the solo property:
* - if the track is soloed, we unmute it
* - if the track is unsoloed, we mute it
*/
if (isOtherTrackSoloed)
{
senderTrack.Mute = !ve.Value;
}
/* if this is the only soloed track, we mute all other tracks
* if this track just got unsoloed, we unmute all other tracks
*/
else
{
foreach (AudioTrack vaudioTrack in trackList)
{
if (vaudioTrack != senderTrack && !vaudioTrack.Solo)
{
vaudioTrack.Mute = ve.Value;
}
}
}
});
// when the AudioTrack.Volume property changes, just set it accordingly on the audio stream
audioTrack.VolumeChanged += new EventHandler <ValueEventArgs <float> >(
delegate(object vsender, ValueEventArgs <float> ve) {
volumeControl.Volume = ve.Value;
});
audioTrack.BalanceChanged += new EventHandler <ValueEventArgs <float> >(
delegate(object vsender, ValueEventArgs <float> ve) {
volumeControl.Balance = ve.Value;
});
audioTrack.InvertedPhaseChanged += new EventHandler <ValueEventArgs <bool> >(
delegate(object vsender, ValueEventArgs <bool> ve) {
phaseInversion.Invert = ve.Value;
});
audioTrack.MonoDownmixChanged += new EventHandler <ValueEventArgs <bool> >(
delegate(object vsender, ValueEventArgs <bool> ve) {
monoStream.Downmix = ve.Value;
});
// adjust sample rate to mixer output rate
ResamplingStream resamplingStream = new ResamplingStream(volumeControl,
ResamplingQuality.Medium, audioMixer.Properties.SampleRate);
IAudioStream trackStream = resamplingStream;
if (trackStream.Properties.Channels == 1 && audioMixer.Properties.Channels > 1)
{
trackStream = new MonoStream(trackStream, audioMixer.Properties.Channels);
}
audioMixer.Add(trackStream);
trackListStreams.Add(audioTrack, trackStream);
}