private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
DisposeWave();
foreach (AudioFile file in this.files)
{
file.Stream.Dispose();
file.Stream = null;
if (file.Format == AudioFormats.MP3)
{
MP3File mp3file = file as MP3File;
mp3file.Reader.Dispose();
mp3file.Reader = null;
}
else
{
WaveFile wavfile = file as WaveFile;
wavfile.Reader.Dispose();
wavfile.Reader = null;
}
}
for (int i = this.tmpCount; i > 0; i--)
{
File.Delete("tmp_" + i + ".wav");
}
}
/* Методы перемотки */
// Back
private void back()
{
long position = this.currentAudio.Stream.Position;
if (currentAudio.Format == AudioFormats.MP3)
{
MP3File file = currentAudio as MP3File;
position = file.Reader.Position;
}
position = position - this.currentAudio.Stream.WaveFormat.AverageBytesPerSecond;
if (position < 0)
{
position = 0;
this.currentAudio.Stream.CurrentTime = new TimeSpan(0);
}
else
{
this.currentAudio.Stream.CurrentTime.Subtract(new TimeSpan(0, 0, 1));
}
this.currentAudio.Stream.Position = position;
if (output.PlaybackState != PlaybackState.Playing)
{
originalPosition.CurrentTime = this.currentAudio.Stream.CurrentTime;
}
}
private void deleteToolStripButton_Click(object sender, EventArgs e)
{
if (listAudio.SelectedItems.Count == 0)
{
return;
}
AudioFile file = files.Find(audio => audio.Path == listAudio.SelectedItems[0].SubItems[4].Text);
listAudio.Items.Remove(listAudio.SelectedItems[0]);
if (file == null)
{
return;
}
if (this.currentAudio == file)
{
if (output.PlaybackState == PlaybackState.Playing)
{
originalPlayTimer.Stop();
spectrumTimer.Stop();
output.Stop();
originalCurrentTime.Text = "00:00:000";
audioStatus.Text = "Готово";
}
audioNameLabel.Text = "";
audioFormatLabel.Text = "";
audioSizeLabel.Text = "";
audioSampleRateInfo.Text = "";
audioBitDepthInfo.SelectedIndex = -1;
audioChannelsInfo.SelectedIndex = -1;
viewPeriod.StartTime = new TimeSpan(0);
viewPeriod.EndTime = new TimeSpan(0);
audioRate.Text = "0 Hz";
audioSize.Text = "0 MB";
audioLength.Text = "00:00:000";
currentAudio = null;
originalWaveViewer.WaveStream = null;
originalWaveViewer.Audio = null;
spectrumViewer.Audio = null;
originalSpectrogramViewer.Count = 0;
originalSpectrogramViewer.Audio = null;
}
if (file.Format == AudioFormats.MP3)
{
MP3File deleteFile = file as MP3File;
deleteFile.Reader.Dispose();
}
else if (file.Format == AudioFormats.WAV)
{
WaveFile deleteFile = file as WaveFile;
deleteFile.Reader.Dispose();
}
currentAudioIndex = -1;
file.Stream.Dispose();
files.Remove(file);
file = null;
GC.Collect();
}
// Resample
private void saveWavButton_Click(object sender, EventArgs e)
{
int sampleRate, bitDepth, channels;
try {
if (this.currentAudio == null)
{
throw new Exception("Вы не выбрали файл для ресэмплинга.");
}
sampleRate = int.Parse(audioSampleRateInfo.Text);
} catch (Exception ex) {
MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
bitDepth = int.Parse(audioBitDepthInfo.Text);
channels = (audioChannelsInfo.SelectedIndex == 0) ? 1 : 2;
SaveFileDialog save = new SaveFileDialog();
save.Filter = "Wave File (*.wav)|*.wav;";
if (save.ShowDialog() != DialogResult.OK)
{
return;
}
WaveFormat format = new WaveFormat(sampleRate, bitDepth, 1);
WaveFormatConversionStream convertedStream = null;
try {
if (this.currentAudio.Format == AudioFormats.MP3)
{
MP3File afile = this.currentAudio as MP3File;
convertedStream = new WaveFormatConversionStream(format, afile.Reader);
}
else
{
WaveFile afile = this.currentAudio as WaveFile;
convertedStream = new WaveFormatConversionStream(format, afile.Reader);
}
} catch (Exception) {
MessageBox.Show("Невозможно сконвертировать в данный формат.", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
WaveFileWriter.CreateWaveFile(save.FileName, convertedStream);
DialogResult dres = MessageBox.Show("Аудиофайл успешно сохранен. Открыть файл?", "Файл сохранен", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (dres == DialogResult.Yes)
{
WaveFileReader reader = new WaveFileReader(save.FileName);
WaveStream pcm = new WaveChannel32(reader);
BlockAlignReductionStream stream = new BlockAlignReductionStream(pcm);
AudioFile file = new WaveFile(reader, stream, save.FileName);
this.files.Add(file);
this.addFileToListView(file);
this.initAudio(file);
}
}
private void openToolStripButton_Click(object sender, EventArgs e)
{
AudioFile file = null;
OpenFileDialog open = new OpenFileDialog();
open.Filter = "Audio File (*.mp3;*.wav)|*.mp3;*.wav;";
if (open.ShowDialog() != DialogResult.OK)
{
return;
}
AudioFile searchFile = files.Find(x => x.Path == open.FileName);
if (searchFile != null)
{
MessageBox.Show("Этот файл уже добавлен в список.", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
try {
if (open.FileName.EndsWith(".mp3"))
{
Mp3FileReader reader = new Mp3FileReader(open.FileName);
WaveStream pcm = WaveFormatConversionStream.CreatePcmStream(reader);
BlockAlignReductionStream stream = new BlockAlignReductionStream(pcm);
file = new MP3File(reader, stream, open.FileName);
}
else if (open.FileName.EndsWith(".wav"))
{
WaveFileReader reader = new WaveFileReader(open.FileName);
WaveStream pcm = new WaveChannel32(reader);
BlockAlignReductionStream stream = new BlockAlignReductionStream(pcm);
file = new WaveFile(reader, stream, open.FileName);
}
else
{
throw new InvalidOperationException("Неверный формат аудиофайла");
}
} catch (Exception) {
MessageBox.Show("Невозможно открыть файл. Возможно вы пытаетесь открыть закодированный файл. Попробуйте воспользоваться декодером G.711", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
files.Add(file);
this.addFileToListView(file);
if (files.Count == 1)
{
this.currentAudioIndex = 0;
this.initAudio(file);
}
}
private void originalPlayTimer_Tick(object sender, EventArgs e)
{
if (currentAudio == null)
{
return;
}
TimeSpan currentTime = new TimeSpan();
if (currentAudio.Format == AudioFormats.MP3)
{
MP3File file = currentAudio as MP3File;
currentTime = file.Reader.CurrentTime;
}
else if (currentAudio.Format == AudioFormats.WAV)
{
WaveFile file = currentAudio as WaveFile;
currentTime = file.Reader.CurrentTime;
}
originalPosition.CurrentTime = currentTime;
}
// Forward
private void forward()
{
long position = this.currentAudio.Stream.Position;
if (currentAudio.Format == AudioFormats.MP3)
{
MP3File file = currentAudio as MP3File;
position = file.Reader.Position;
}
if (position + this.currentAudio.Stream.WaveFormat.AverageBytesPerSecond > this.currentAudio.Stream.Length)
{
return;
}
this.currentAudio.Stream.Position = position + this.currentAudio.Stream.WaveFormat.AverageBytesPerSecond;
this.currentAudio.Stream.CurrentTime.Add(new TimeSpan(0, 0, 1));
if (output.PlaybackState != PlaybackState.Playing)
{
originalPosition.CurrentTime = this.currentAudio.Stream.CurrentTime;
}
}
protected override void OnPaint(PaintEventArgs e)
{
if (this.Audio != null)
{
long position = 0;
if (audio.Format == Enums.AudioFormats.MP3)
{
MP3File file = audio as MP3File;
position = file.Reader.Position / 2;
}
else if (audio.Format == Enums.AudioFormats.WAV)
{
WaveFile file = audio as WaveFile;
position = file.Reader.Position / 2;
}
double[] spectrum = SpectrumViewer.getSpectrum(this.Audio, position);
if (this.state == ViewState.LOGARITHM)
{
this.logarithmSpectrum(spectrum);
}
e.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
Pen linePen = new Pen(this.PenColor, this.PenWidth);
linePen.StartCap = System.Drawing.Drawing2D.LineCap.Round;
linePen.EndCap = System.Drawing.Drawing2D.LineCap.Round;
float step = (float)(this.Width - 20) / spectrum.Length;
// Отрисовка шкалы по оси X
int yLinePos = (this.state != ViewState.LOGARITHM) ? this.Height - 20 : 20;
int yStringPos = (this.state != ViewState.LOGARITHM) ? yLinePos + 3 : 3;
e.Graphics.DrawLine(Pens.White, 0, yLinePos, this.Width, yLinePos);
e.Graphics.DrawString("kHz", new Font(FontFamily.GenericSansSerif, 7.5f), Brushes.White, 0, yStringPos);
int[] freqPointsPercents = { 5, 10, 20, 25, 40, 50, 60, 75, 80, 90, 95 }; // Позиции значений частот (в %)
float freqPoint;
for (int i = 0; i < freqPointsPercents.Length; i++)
{
freqPoint = 20 + (freqPointsPercents[i] * (this.Width - 20) / 100f);
if (this.state == ViewState.COLUMNAR || this.state == ViewState.DEFAULT)
{
e.Graphics.DrawLine(new Pen(Color.Gray, 1f), freqPoint, 0, freqPoint, this.Height - 20);
}
else
{
e.Graphics.DrawLine(new Pen(Color.Gray, 1f), freqPoint, 20, freqPoint, this.Height);
}
// Получение частоты в текущей точке и ее отображение
double sample = (spectrum.Length * freqPointsPercents[i]) / 100.0;
string currentFreq = ((sample * freq) * Math.Pow(10, -3)).ToString("0.000");
e.Graphics.DrawString(currentFreq, new Font(FontFamily.GenericSansSerif, 7.5f), Brushes.White, freqPoint - 15, yStringPos);
}
// Отрисовка шкалы по оси Y
e.Graphics.DrawLine(Pens.White, 20, 0, 20, this.Height);
if (this.state == ViewState.LOGARITHM)
{
e.Graphics.DrawString("dB", new Font(FontFamily.GenericSansSerif, 7.5f), Brushes.White, 2, this.Height - 15);
}
int[] gradePointsPercents = { 10, 20, 30, 40, 50, 60, 70, 80, 90 }; // Позиции значений уровня спектра (в %)
int gradePoint;
double currentGrade;
for (int i = 0; i < gradePointsPercents.Length; i++)
{
if (i == gradePointsPercents.Length - 1 && this.state == ViewState.LOGARITHM)
{
break; // Для dB не выводить последнее значение
}
gradePoint = gradePointsPercents[i] * (this.Height - 20) / 100;
gradePoint = (this.state == ViewState.LOGARITHM) ? gradePoint + 20 : gradePoint;
e.Graphics.DrawLine(new Pen(Color.Gray, 1f), 20, gradePoint, this.Width, gradePoint);
if (this.state != ViewState.LOGARITHM)
{
// Нормировка значения уровня спектра
currentGrade = (this.Height - 20 - gradePoint) * this.Audio.Avg / (this.Height - 20);
if (this.state == ViewState.COLUMNAR)
{
currentGrade /= 3;
}
currentGrade *= 10000;
currentGrade = Math.Round(currentGrade);
}
else
{
currentGrade = Math.Round(gradePoint / -1.5);
}
e.Graphics.DrawString(currentGrade.ToString(), new Font(FontFamily.GenericSansSerif, 7f), Brushes.White, -1, gradePoint - 6);
}
// Отрисовка спектра
float koef = (this.state != ViewState.LOGARITHM) ? (this.Height - 20) / this.Audio.Avg : 1.5f;
float x = e.ClipRectangle.X + 20;
float y = (float)(this.Height - 20);
y = (this.state == ViewState.LOGARITHM) ? 20 : y;
if (this.state != ViewState.COLUMNAR) // Для грфаического представления
{
float x1, y1;
for (int i = 1; i < spectrum.Length; i++)
{
x1 = x + step;
y1 = (this.state != ViewState.LOGARITHM) ? (this.Height - 20) - (float)(spectrum[i] * koef) : 20 - (float)(spectrum[i] * koef);
if (float.IsInfinity(y1))
{
continue;
}
e.Graphics.DrawLine(linePen, x, y, x1, y1);
x = x1; y = y1;
}
}
else // Для столбчатого
{
float columnWidth = (float)(this.Width - 20) / this.columnCount;
float columnHeight = 0;
float columnHeightCoord;
float oldLineYCoord;
for (int i = 0; i < this.columnCount; i++, columnHeight = 0)
{
// Находим среднее значение уровня для текущего столбца
for (int j = i * (spectrum.Length / this.columnCount), count = 0; count < (spectrum.Length / this.columnCount); j++, count++)
{
if (i == 0 && j == 0)
{
continue;
}
columnHeight += (float)spectrum[j];
}
columnHeight /= (i == 0) ? (spectrum.Length / this.columnCount) - 1 : spectrum.Length / this.columnCount;
this.oldValues[i] -= 0.00005f; // Плавное падение полосы-указателя предыдущего уровня
oldLineYCoord = (this.Height - 20) - this.oldValues[i] * koef * 3;
if (columnHeight > this.oldValues[i])
{
this.oldValues[i] = columnHeight; // Обновление указателя уровня
}
columnHeightCoord = (this.Height - 20) - columnHeight * koef * 3;
e.Graphics.DrawLine(linePen, x, oldLineYCoord, x + columnWidth, oldLineYCoord);
e.Graphics.DrawRectangle(Pens.Aqua, x, columnHeightCoord, columnWidth, y - columnHeightCoord);
x += columnWidth;
}
}
}
base.OnPaint(e);
}