static async Task <bool> To_MP3(int File_Number, string To_Dir, bool IsFromFileDelete)
{
if (!File.Exists(From_Files[File_Number]))
{
return(false);
}
try
{
string To_Audio_File = To_Dir + "\\" + Path.GetFileNameWithoutExtension(From_Files[File_Number]) + ".mp3";
await Task.Run(() =>
{
string Ex = Path.GetExtension(From_Files[File_Number]);
if (Ex == ".ogg")
{
using (NAudio.Vorbis.VorbisWaveReader reader = new NAudio.Vorbis.VorbisWaveReader(From_Files[File_Number]))
using (LameMP3FileWriter wtr = new LameMP3FileWriter(To_Audio_File, reader.WaveFormat, 128))
reader.CopyTo(wtr);
}
else if (Ex == ".wav")
{
using (WaveFileReader reader = new WaveFileReader(From_Files[File_Number]))
using (LameMP3FileWriter wtr = new LameMP3FileWriter(To_Audio_File, reader.WaveFormat, 128))
reader.CopyTo(wtr);
}
else if (Ex == ".flac")
{
using (NAudio.Flac.FlacReader reader = new NAudio.Flac.FlacReader(From_Files[File_Number]))
using (LameMP3FileWriter wtr = new LameMP3FileWriter(To_Audio_File, reader.WaveFormat, 128))
reader.CopyTo(wtr);
}
else if (Ex == ".aac" || Ex == ".wma" || Ex == ".mp4" || Ex == ".webm")
{
using (MediaFoundationReader reader = new MediaFoundationReader(From_Files[File_Number]))
using (LameMP3FileWriter wtr = new LameMP3FileWriter(To_Audio_File, reader.WaveFormat, 128))
reader.CopyTo(wtr);
}
else
{
Un4seen.Bass.Misc.EncoderLAME mc = new Un4seen.Bass.Misc.EncoderLAME(0);
mc.EncoderDirectory = Voice_Set.Special_Path + "/Encode_Mp3";
mc.InputFile = From_Files[File_Number];
mc.OutputFile = To_Audio_File;
mc.LAME_Bitrate = (int)Un4seen.Bass.Misc.EncoderLAME.BITRATE.kbps_160;
mc.LAME_Mode = Un4seen.Bass.Misc.EncoderLAME.LAMEMode.Default;
mc.LAME_Quality = Un4seen.Bass.Misc.EncoderLAME.LAMEQuality.Q2;
Un4seen.Bass.Misc.BaseEncoder.EncodeFile(mc, null, true, false, true);
}
if (IsFromFileDelete)
{
File.Delete(From_Files[File_Number]);
}
});
}
catch
{
return(false);
}
return(true);
}
//複数のサウンドを合体(Posにマイナスが含まれている場合バグります
//引数:合体させるファイル, サウンドの開始位置, 音量, 再生速度, 保存先, MP3として保存するか(falseの場合は.wav形式), 元のファイルを削除するか
public static void Sound_Combine(List <string> Files, List <double> Pos, List <double> Volume, List <double> Speed, string To_File, bool IsEncodeMP3, bool IsFromFileDelete = false)
{
int mixer = BassMix.BASS_Mixer_StreamCreate(48000, 2, BASSFlag.BASS_STREAM_DECODE);
long Mixer_Max_Length = 0;
List <int> Streams = new List <int>();
List <int> Stream_Handles = new List <int>();
//ファイルをミックスする
for (int Number = 0; Number < Files.Count; Number++)
{
Streams.Add(Bass.BASS_StreamCreateFile(Files[Number], 0, 0, BASSFlag.BASS_SAMPLE_FLOAT | BASSFlag.BASS_STREAM_DECODE));
Stream_Handles.Add(BassFx.BASS_FX_TempoCreate(Streams[Streams.Count - 1], BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_FX_FREESOURCE));
float Freq = 48000;
Bass.BASS_ChannelGetAttribute(Stream_Handles[Stream_Handles.Count - 1], BASSAttribute.BASS_ATTRIB_TEMPO_FREQ, ref Freq);
Bass.BASS_ChannelSetAttribute(Stream_Handles[Stream_Handles.Count - 1], BASSAttribute.BASS_ATTRIB_TEMPO_FREQ, Freq * (float)Speed[Number]);
Bass.BASS_ChannelSetAttribute(Stream_Handles[Stream_Handles.Count - 1], BASSAttribute.BASS_ATTRIB_VOL, (float)(Volume[Number] / 100));
long start = Bass.BASS_ChannelSeconds2Bytes(mixer, Pos[Number]);
BassMix.BASS_Mixer_StreamAddChannelEx(mixer, Stream_Handles[Stream_Handles.Count - 1], BASSFlag.BASS_SAMPLE_FLOAT | BASSFlag.BASS_STREAM_DECODE, start, 0);
long Now_Stream_Length = Bass.BASS_ChannelGetLength(Streams[Streams.Count - 1], BASSMode.BASS_POS_BYTES);
if (Mixer_Max_Length < Now_Stream_Length + start)
{
Mixer_Max_Length = Now_Stream_Length + start;
}
}
//.wavでエンコード(こっちの方が速い + 安定性が高い)
EncoderWAV l = new EncoderWAV(mixer);
l.InputFile = null;
l.OutputFile = To_File + ".tmp";
l.WAV_BitsPerSample = 24;
l.Start(null, IntPtr.Zero, false);
byte[] encBuffer = new byte[65536];
while (Bass.BASS_ChannelIsActive(mixer) == BASSActive.BASS_ACTIVE_PLAYING)
{
int len = Bass.BASS_ChannelGetData(mixer, encBuffer, encBuffer.Length);
if (len <= 0)
{
break;
}
else if (Mixer_Max_Length <= Bass.BASS_ChannelGetPosition(mixer, BASSMode.BASS_POS_BYTES))
{
break;
}
}
l.Stop();
//メモリ解放
Bass.BASS_StreamFree(mixer);
foreach (int Stream in Stream_Handles)
{
Bass.BASS_StreamFree(Stream);
}
foreach (int Stream in Streams)
{
Bass.BASS_StreamFree(Stream);
}
//MP3形式にエンコード
if (IsEncodeMP3)
{
Un4seen.Bass.Misc.EncoderLAME mc = new Un4seen.Bass.Misc.EncoderLAME(0);
mc.EncoderDirectory = Voice_Set.Special_Path + "/Encode_Mp3";
mc.InputFile = To_File + ".tmp";
mc.OutputFile = To_File;
mc.LAME_Bitrate = (int)Un4seen.Bass.Misc.EncoderLAME.BITRATE.kbps_144;
mc.LAME_Mode = Un4seen.Bass.Misc.EncoderLAME.LAMEMode.Default;
mc.LAME_Quality = Un4seen.Bass.Misc.EncoderLAME.LAMEQuality.Q2;
Un4seen.Bass.Misc.BaseEncoder.EncodeFile(mc, null, true, false, true);
mc.Dispose();
File.Delete(To_File + ".tmp");
}
else
{
Sub_Code.File_Move(To_File + ".tmp", To_File, true);
}
if (File.Exists(To_File) && IsFromFileDelete)
{
foreach (string File_Now in Files)
{
Sub_Code.File_Delete_V2(File_Now);
}
}
}
