protected override string ConstructModifyArgs(FileInfo source, FileInfo output, AudioUtilityRequest request)
{
string codec;
// we're going to assume that the bytes are always signed and in little endian order
// since this conversion is basically for working with byte-only files there's no way to check
// https://trac.ffmpeg.org/wiki/audio%20types
// DE s16le PCM signed 16 - bit little - endian
// DE s24le PCM signed 24 - bit little - endian
// DE s32le PCM signed 32 - bit little - endian
// DE s8 PCM signed 8 - bit
// DE u8 PCM unsigned 8 - bit
switch (request.BitDepth)
{
case 8:
// only 8-bit wav is unsigned
codec = "u8";
break;
case 16:
codec = "s16le";
break;
case 24:
codec = "s24le";
break;
case 32:
codec = "s32le";
break;
default:
throw new NotSupportedException();
}
var args = new StringBuilder(FfmpegAudioUtility.ArgsOverwrite);
// input format
args.Append($" -f {codec}");
args.Append($" -ar {request.TargetSampleRate.Value}");
args.Append($" -ac {request.Channels.Length}");
args.Append(FfmpegAudioUtility.ArgsSource.Format2(source.FullName));
if (request.MixDownToMono == true)
{
args.AppendFormat(FfmpegAudioUtility.ArgsChannelCount, 1);
}
FfmpegAudioUtility.FormatFfmpegOffsetArgs(request, args);
// output codec
args.Append($" -acodec pcm_{codec}");
args.Append($" \"{output.FullName}\" ");
return(args.ToString());
}
/// <summary>
/// Initializes a new instance of the <see cref="MasterAudioUtility"/> class.
/// Creates a new audio utility that can be used to convert and segment audio, and to get information about audio.
/// </summary>
public MasterAudioUtility()
{
this.wvunpackUtility = AppConfigHelper.WvunpackExe != null
? new WavPackAudioUtility(AppConfigHelper.WvunpackExe.ToFileInfo())
: null;
this.ffmpegUtility = new FfmpegAudioUtility(new FileInfo(AppConfigHelper.FfmpegExe), new FileInfo(AppConfigHelper.FfprobeExe));
this.ffmpegRawPcmUtility = new FfmpegRawPcmAudioUtility(new FileInfo(AppConfigHelper.FfmpegExe));
this.soxUtility = new SoxAudioUtility(new FileInfo(AppConfigHelper.SoxExe));
this.TemporaryFilesDirectory ??= TempFileHelper.TempDir();
this.Validate();
}
/// <summary>
/// Initializes a new instance of the <see cref="MasterAudioUtility"/> class.
/// Creates a new audio utility that can be used to convert and segment audio, and to get information about audio.
/// The given audio utility instances will be used.
/// </summary>
/// <param name="ffmpegUtility">ffmpeg utility.
/// </param>
/// <param name="wvunpackUtility">wxunpack utility.
/// </param>
/// <param name="soxUtility">sox utility.
/// </param>
/// <param name="ffmpegRawPcmUtility">The ffmpeg utility for converting raw PCM data.</param>
/// <param name="temporaryFilesDirectory">Directory for temporary files.</param>
public MasterAudioUtility(
FfmpegAudioUtility ffmpegUtility,
WavPackAudioUtility wvunpackUtility,
SoxAudioUtility soxUtility,
FfmpegRawPcmAudioUtility ffmpegRawPcmUtility,
DirectoryInfo temporaryFilesDirectory = null)
{
this.wvunpackUtility = wvunpackUtility;
this.ffmpegUtility = ffmpegUtility;
this.ffmpegRawPcmUtility = ffmpegRawPcmUtility;
this.soxUtility = soxUtility;
this.TemporaryFilesDirectory = temporaryFilesDirectory ?? TempFileHelper.TempDir();
this.Validate();
}
/// <summary>
/// Initializes a new instance of the <see cref="MasterAudioUtility"/> class.
/// Creates a new audio utility that can be used to convert and segment audio, and to get information about audio.
/// </summary>
public MasterAudioUtility()
{
this.wvunpackUtility = new WavPackAudioUtility(new FileInfo(AppConfigHelper.WvunpackExe));
var mp3SpltExe = AppConfigHelper.Mp3SpltExe;
if (mp3SpltExe != null)
{
this.mp3SpltUtility = new Mp3SpltAudioUtility(new FileInfo(mp3SpltExe));
}
this.ffmpegUtility = new FfmpegAudioUtility(new FileInfo(AppConfigHelper.FfmpegExe), new FileInfo(AppConfigHelper.FfprobeExe));
this.ffmpegRawPcmUtility = new FfmpegRawPcmAudioUtility(new FileInfo(AppConfigHelper.FfmpegExe));
this.soxUtility = new SoxAudioUtility(new FileInfo(AppConfigHelper.SoxExe));
this.TemporaryFilesDirectory = this.TemporaryFilesDirectory ?? TempFileHelper.TempDir();
this.Validate();
}
