public void Initialize(ISampleProvider BaseProvider)
{
baseProv = BaseProvider;
PSE.VolumeRequest += PSE_VolumeRequest;
PSE.ExtractedDegreeOfRisk += PSE_ExtractedDegreeOfRisk;
PSE.Enable = true;
PSEFadeTimer.Interval = 3000;
PSEFadeTimer.Tick += PSEFadeTimer_Tick;
BufferedWaveProvider = new BufferedWaveProvider(WaveFormat);
List <ISampleProvider> sources = new List <ISampleProvider>();
sources.Add(baseProv);
sources.Add(WaveExtensionMethods.ToSampleProvider(BufferedWaveProvider));
Mixer = new NAudio.Wave.SampleProviders.MixingSampleProvider(sources);
}
/// <summary>
/// Mixing 2 files starting from time @secDelay
/// </summary>
public static void OverlapFiles(string file1, string file2, int secDelay, string outFile)
{
if (secDelay < 0)
{
var tmp = file1;
file1 = file2;
file2 = tmp;
secDelay = -secDelay;
}
if (!File.Exists(file1))
{
Program.LogError("No file " + file1); return;
}
if (!File.Exists(file2))
{
Program.LogError("No file " + file2); return;
}
using (var reader1 = new AudioFileReader(file1))
{
//var resampler1 = new WdlResamplingSampleProvider(reader1, SampleRate);
var outFormat = new WaveFormat(SampleRate, Channels);
using (var resampler1 = new MediaFoundationResampler(reader1, outFormat))
{
using (var reader2 = new AudioFileReader(file2))
{
using (var resampler2 = new MediaFoundationResampler(reader2, outFormat))
{
// standard sample rate and channels
var res1 = WaveExtensionMethods.ToSampleProvider(resampler1);
var res2 = WaveExtensionMethods.ToSampleProvider(resampler2);
PrintFileInfo(reader1, "Info of file: " + file1);
PrintFileInfo(reader2, "Info of file: " + file2);
var wf = WaveFormat.CreateIeeeFloatWaveFormat(SampleRate, Channels);
using (WaveFileWriter writer = new WaveFileWriter(outFile, wf))
{
// 1 second buffer
var buf1 = new float[SampleRate * Channels];
var buf2 = new float[SampleRate * Channels];
int currentSec = 0;
var file2finished = false;
while (true)
{
int read1 = res1.Read(buf1, 0, buf1.Length);
if (read1 > 0)
{
if (currentSec < secDelay || file2finished)
{
writer.WriteSamples(buf1, 0, read1);
}
else
{
int read2 = res2.Read(buf2, 0, buf2.Length);
WriteMix(read1, buf1, read2, buf2, writer);
}
}
else
{
break;
}
currentSec++;
}
}
}
}
}
}
}
private void Start_AddTask_Btn_Click(object sender, EventArgs e)
{
/*
* //start concat test
*
* var extList = new string[] { ".wav" };
* var files = Directory.GetFiles("D:/share/concat", "*.wav").ToList();
* var sampleRate = 48000;
* var bit = 16;
* var channel = 1;
* var outFormat = new WaveFormat(sampleRate, bit, channel);
* var writer = new WaveFileWriter("concat.wav", outFormat);
* foreach (var name in files)
* {
* using (WaveFormatConversionStream stream = new WaveFormatConversionStream(outFormat, new WaveFileReader(name)))
* {
* byte[] taskBuffer = new byte[stream.WaveFormat.BitsPerSample * stream.WaveFormat.Channels / 4];
* int read;
* try
* {
* while ((read = stream.Read(taskBuffer, 0, taskBuffer.Length)) > 0)
* {
* writer.Write(taskBuffer, 0, read);
* }
* }
* catch (Exception ex)
* {
* addText(ex.Message + "\n" + "filename: " + name, Color.Black);
* if (writer != null)
* writer.Dispose();
* return;
* }
* }
* }
* writer.Dispose();
*/
SaveFileDialog dialog = new SaveFileDialog();
dialog.Title = "Save";
dialog.InitialDirectory = ".\\";
dialog.SupportMultiDottedExtensions = true;
dialog.Filter = "wav files (*.wav)|*.wav|All files (*.*)|*.*";
dialog.FileName = "Untitled.wav";
dialog.OverwritePrompt = true;
if (dialog.ShowDialog() == DialogResult.OK)
{
try
{
//read the cut location
var location = new List <int>();
using (StreamReader sr = new StreamReader(Keyword_Sample_TextBox.Text.Trim()))
{
String line;
while ((line = sr.ReadLine()) != null)
{
location.Add(Int32.Parse(line));
}
}
//read the task filenames
var taskFilenames = new List <String>();
using (StreamReader sr = new StreamReader(Task_Source_TextBox.Text.Trim()))
{
String line;
while ((line = sr.ReadLine()) != null)
{
if (line != "")
{
taskFilenames.Add(line.Trim());
}
}
}
if (location.Count > taskFilenames.Count)
{
throw new ArgumentException("the number cut location must equal or less than the number of input task files");
}
using (var keywordWaveReader = new WaveFileReader(Keyword_Source_TextBox.Text.Trim()))
{
var keywordSampleProvider = WaveExtensionMethods.ToSampleProvider(keywordWaveReader);
//set writer
var sampleRate = keywordWaveReader.WaveFormat.SampleRate;
var bit = keywordWaveReader.WaveFormat.BitsPerSample;
var channel = 1;
var outFormat = new WaveFormat(sampleRate, bit, channel);
var writer = new WaveFileWriter(dialog.FileName, outFormat);
//start writing file
float[] buffer = new float[2 * keywordWaveReader.WaveFormat.Channels]; //2 samples per buffer
int samplesRead;
int currentLocation = 0; //number of samples has been read
int taskCount = 0;
int cutLocation = location[taskCount];
while ((samplesRead = keywordSampleProvider.Read(buffer, 0, buffer.Length)) > 0)
{
writer.WriteSamples(buffer, 0, samplesRead);
currentLocation += samplesRead;
//when encounter the cut location, write the task stream
if (currentLocation > cutLocation)
{
//convert the task stream into the same waveFormat as keyword stream's
var taskFilename = $@"task/{taskFilenames[taskCount]}";
using (WaveFormatConversionStream taskStream = new WaveFormatConversionStream(outFormat, new WaveFileReader(taskFilename)))
{
byte[] taskBuffer = new byte[taskStream.WaveFormat.BitsPerSample * taskStream.WaveFormat.Channels / 4];
int taskBytesRead;
while ((taskBytesRead = taskStream.Read(taskBuffer, 0, taskBuffer.Length)) > 0)
{
writer.Write(taskBuffer, 0, taskBytesRead);
}
//insert 5sec silence
for (int sec = 0; sec < 5; sec++)
{
float[] silenceBuffer = Enumerable.Repeat((float)0, writer.WaveFormat.SampleRate).ToArray();
writer.WriteSamples(silenceBuffer, 0, silenceBuffer.Length);
}
}
taskCount++;
cutLocation = location[taskCount];
}
}
writer.Dispose();
}
}
catch (Exception ex)
{
//MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
MessageBox.Show(ex.ToString());
}
}
}