private void midiListView_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
var listView = sender as ListView;
activeMidi = (MidiFileObject)listView.SelectedItem;
TrackNames.Clear();
if (activeMidi == null)
{
return;
}
try
{
if (activeMidi.Tracks == null)
{
activeMidi.ReadFile();
}
TrackNames.AddRange(activeMidi.TrackNames);
listView.ScrollIntoView(listView.SelectedItem);
listView.Focus();
}
catch (Exception error)
{
MessageBox.Show($"Midi文件读取出错！\r\n异常信息：{error.Message}\r\n 异常类型{error.GetType()}",
"读取错误", MessageBoxButton.OK);
}
}
private void DrawWaveForm()
{
ClearPanels();
ClearLabels();
lblFileName.Invoke(new MethodInvoker(() => lblFileName.Text = "Analysis of audio file: " + (Parser.Songs == null ? Path.GetFileName(InputFile) : Parser.Songs[0].InternalName + ".mogg")));
var BassStream = Bass.BASS_StreamCreateFile(Tools.GetOggStreamIntPtr(), 0L, Tools.PlayingSongOggData.Length, BASSFlag.BASS_STREAM_DECODE);
if (BassStream == 0)
{
MessageBox.Show("Error processing audio stream:\n" + Bass.BASS_ErrorGetCode(), Text, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
var length = Bass.BASS_ChannelGetLength(BassStream);
var duration = Math.Round(Bass.BASS_ChannelBytes2Seconds(BassStream, length), 2);
var audio_info = Bass.BASS_ChannelGetInfo(BassStream);
string size;
if (Tools.PlayingSongOggData.Length >= 1048576)
{
size = Math.Round((double)Tools.PlayingSongOggData.Length / 1048576, 2) + " MB";
}
else
{
size = Math.Round((double)Tools.PlayingSongOggData.Length / 1024, 2) + " KB";
}
var minutes = Parser.GetSongDuration((duration * 1000).ToString(CultureInfo.InvariantCulture));
lblStart.Invoke(new MethodInvoker(() => lblStart.Text = "0:00"));
lblLength.Invoke(new MethodInvoker(() => lblLength.Text = minutes));
var info = "Channels: " + audio_info.chans + " | Sample rate: " + audio_info.freq + " Hz | Length: " + duration + " seconds ("
+ minutes + ") | File size: " + Tools.PlayingSongOggData.Length + " bytes (" + size + ")";
lblFileInfo.Invoke(new MethodInvoker(() => lblFileInfo.Text = info));
WaveForm WaveImage;
switch (audio_info.chans)
{
case 1:
WaveImage = GetNewWaveForm(false);
if (!WaveImage.RenderStart(BassStream, false, true))
{
MessageBox.Show("Error rendering audio stream:\n" + Bass.BASS_ErrorGetCode(), Text, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
ClearPanels();
return;
}
panelWave.BackgroundImage = WaveImage.CreateBitmap(WaveWidth, WaveHeight, -1, -1, highQualityDrawing.Checked);
break;
case 2:
WaveImage = GetNewWaveForm(true);
if (!WaveImage.RenderStart(BassStream, false, true))
{
MessageBox.Show("Error rendering audio stream:\n" + Bass.BASS_ErrorGetCode(), Text, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
ClearPanels();
return;
}
panelWave.BackgroundImage = WaveImage.CreateBitmap(WaveWidth, WaveHeight, -1, -1, highQualityDrawing.Checked);
break;
default:
try
{
List <string> TrackNames;
List <bool> TrackIsStereo;
var splitter = new MoggSplitter();
var ArrangedChannels = splitter.ArrangeStreamChannels(audio_info.chans, Path.GetExtension(InputFile) != ".wav");
GetTrackNames(out TrackNames, out TrackIsStereo);
var height = WaveHeight / audio_info.chans;
var top = 0;
var index = 0;
var maxCount = TrackNames.Any() ? TrackNames.Count : audio_info.chans;
for (var i = 0; i < maxCount; i++)
{
var multiplier = TrackIsStereo.Any() && TrackIsStereo[i] ? 2 : 1;
var panel = new Panel();
Invoke(new MethodInvoker(delegate { panel.Parent = panelWave; }));
panel.Invoke(new MethodInvoker(() => panel.Left = -1));
panel.Invoke(new MethodInvoker(() => panel.Top = top - 1));
panel.Invoke(new MethodInvoker(() => panel.Width = WaveWidth + 2));
panel.Invoke(new MethodInvoker(() => panel.Height = (height * multiplier) + 1));
panel.Invoke(new MethodInvoker(() => panel.BackgroundImageLayout = ImageLayout.Stretch));
panel.Invoke(new MethodInvoker(() => panel.Anchor = AnchorStyles.Left | AnchorStyles.Top | AnchorStyles.Right));
if (outlineAudioTracks.Checked && i < maxCount - 1)
{
panel.Invoke(new MethodInvoker(() => panel.BorderStyle = BorderStyle.FixedSingle));
}
var map = TrackIsStereo.Any() && TrackIsStereo[i] ? new[] { ArrangedChannels[index], ArrangedChannels[index + 1], -1 } :
new[] { ArrangedChannels[index], -1 };
var channel_stream = BassMix.BASS_Split_StreamCreate(BassStream, BASSFlag.BASS_STREAM_DECODE, map);
WaveImage = GetNewWaveForm(TrackIsStereo.Any() && TrackIsStereo[i]);
if (!WaveImage.RenderStart(channel_stream, false, true))
{
MessageBox.Show("Error rendering audio stream:\n" + Bass.BASS_ErrorGetCode(), Text, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
ClearPanels();
ClearLabels();
return;
}
var endFrame = WaveImage.Position2Frames((length / audio_info.chans) * multiplier);
panel.BackgroundImage = WaveImage.CreateBitmap(WaveWidth, height * multiplier, -1, endFrame, highQualityDrawing.Checked);
var font = new Font("Times New Roman", 10f, FontStyle.Bold);
var label = new Label();
Invoke(new MethodInvoker(delegate { label.Parent = panel; }));
label.Invoke(new MethodInvoker(() => label.Visible = labelAudioChannels.Checked));
label.Invoke(new MethodInvoker(() => label.Location = new Point(3, 3)));
label.Invoke(new MethodInvoker(() => label.BackColor = Color.Transparent));
label.Invoke(new MethodInvoker(() => label.ForeColor = Color.White));
label.Invoke(new MethodInvoker(() => label.Font = font));
label.Invoke(new MethodInvoker(() => label.Text = TrackNames.Count > 0 ? TrackNames[i] : "chan. " + i));
ChannelLabels.Add(label);
Bass.BASS_StreamFree(channel_stream);
ChannelPanels.Add(panel);
top += (height * multiplier);
index += multiplier;
}
}
catch (Exception ex)
{
MessageBox.Show("Error rendering audio stream:\n" + ex.Message + "\n\n" + Bass.BASS_ErrorGetCode(), Text, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
ClearPanels();
ClearLabels();
return;
}
break;
}
Bass.BASS_StreamFree(BassStream);
if (InputFiles.Count <= 1)
{
return;
}
var file = Path.GetDirectoryName(InputFile) + "\\" + Tools.CleanString(Path.GetFileNameWithoutExtension(InputFile), false) + ".jpg";
TakeScreenshot(file);
}
