/// <summary>
/// Saves the partial as wave.
/// </summary>
/// <param name="inFilename">The in filename.</param>
/// <param name="outFilename">The out filename.</param>
/// <param name="start">The start position in seconds.</param>
/// <param name="length">The length in seconds.</param>
/// <param name="offset">The offset position in seconds.</param>
/// <param name="gain">The gain.</param>
/// <param name="bpm">The BPM.</param>
/// <param name="targetBpm">The target BPM.</param>
public static void SavePartialAsWave(string inFilename,
string outFilename,
double start,
double length,
double offset = 0,
float gain = 0,
decimal bpm = 0,
decimal targetBpm = 0)
{
DebugHelper.WriteLine("Saving portion of track as wave with offset - " + inFilename);
var audioStream = new Sample()
{
Filename = inFilename,
Description = inFilename,
Gain = gain,
Bpm = bpm
};
AudioStreamHelper.LoadAudio(audioStream);
//var channel = Bass.BASS_StreamCreateFile(inFilename, 0L, 0L,
// BASSFlag.BASS_SAMPLE_FLOAT | BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_STREAM_PRESCAN);
//if (channel == 0) throw new Exception("Cannot load track " + inFilename);
//if (gain > 0)
// AudioStreamHelper.SetReplayGain(channel, gain);
if (targetBpm != 0 && bpm != 0)
AudioStreamHelper.SetTempoToMatchBpm(audioStream.Channel, bpm, targetBpm);
const BASSEncode flags = BASSEncode.BASS_ENCODE_PCM;
BassEnc.BASS_Encode_Start(audioStream.Channel, outFilename, flags, null, IntPtr.Zero);
var startByte = Bass.BASS_ChannelSeconds2Bytes(audioStream.Channel, start);
var endByte = Bass.BASS_ChannelSeconds2Bytes(audioStream.Channel, start + length);
if (offset == 0 || offset == start)
{
TransferBytes(audioStream.Channel, startByte, endByte);
}
else
{
startByte = Bass.BASS_ChannelSeconds2Bytes(audioStream.Channel, offset);
TransferBytes(audioStream.Channel, startByte, endByte);
startByte = Bass.BASS_ChannelSeconds2Bytes(audioStream.Channel, start);
endByte = Bass.BASS_ChannelSeconds2Bytes(audioStream.Channel, offset);
TransferBytes(audioStream.Channel, startByte, endByte);
}
BassEnc.BASS_Encode_Stop(audioStream.Channel);
Bass.BASS_StreamFree(audioStream.Channel);
}
/// <summary>
/// Saves the specified sample as a mono wave in the Scratch folder and launches Scratch
/// </summary>
/// <param name="sample">The sample.</param>
public static void Launch(Sample sample)
{
if (_applicationFolder == "") return;
if (sample == null) return;
SilenceHelper.GenerateSilenceAudioFile(GetSilenceFilename());
SaveSample(sample);
var gain = GetGain(sample.Filename);
var scratchFilePath = Path.Combine(_applicationFolder, ScratchFile);
AudioExportHelper.SaveAsMonoWave(sample.Filename, scratchFilePath, gain);
var scratchExePath = Path.Combine(_applicationFolder, ScratchExe);
Process.Start(scratchExePath);
}
/// <summary>
/// Saves a shortened version the specified sample as a mono wave in the Scratch folder and launches Scratch
/// </summary>
/// <param name="sample">The sample.</param>
public static void LaunchShort(Sample sample)
{
if (_applicationFolder == "") return;
SilenceHelper.GenerateSilenceAudioFile(GetSilenceFilename());
SaveSample(sample);
var bpm = BpmHelper.GetBpmFromLoopLength(sample.LengthSeconds);
var loopLength = BpmHelper.GetDefaultLoopLength(bpm);
var shortLength = loopLength/8;
if (shortLength > sample.LengthSeconds) shortLength = sample.LengthSeconds;
var gain = GetGain(sample.Filename);
var scratchFilePath = Path.Combine(_applicationFolder, ScratchFile);
AudioExportHelper.SaveAsMonoWave(sample.Filename, scratchFilePath, shortLength, gain);
var scratchExePath = Path.Combine(_applicationFolder, ScratchExe);
Process.Start(scratchExePath);
}
public AudioStream Load(string streamKey, string filename)
{
if (!File.Exists(filename))
throw new Exception("Cannot find file " + filename);
if (GetStreamSection(streamKey) != null)
throw new Exception("AudioStream already exists with streamKey " + streamKey);
var audioStream = new Sample
{
Filename = filename
};
var tags = TagHelper.LoadTags(filename);
if (tags != null)
{
if (tags.Gain.HasValue)
audioStream.Gain = tags.Gain.Value;
if (tags.Bpm.HasValue)
audioStream.Bpm = tags.Bpm.Value;
audioStream.Description = TrackHelper.GuessTrackDescription(filename, tags.Artist, tags.Title);
}
AudioStreamHelper.LoadAudio(audioStream);
audioStream.SyncProc = OnSync;
AudioStreamHelper.AddToMixer(audioStream, Output.ChannelId);
AudioStreamHelper.SetPosition(audioStream, 0);
lock (_streamSections)
{
_streamSections.Add(new AudioStreamSection
{
Key = streamKey,
AudioStream = audioStream,
AudioSections = new List<AudioSection>()
});
}
return audioStream;
}
private void StartRecordingSampleTrigger(Sample sample)
{
if (CurrentTrack == null) return;
if (sample == null) return;
LastSampleTriggerTrack = CurrentTrack;
LastSampleTriggerNextTrackDescription = NextTrack == null ? "" : NextTrack.Description;
LastSampleTriggerPrevTrackDescription = PreviousTrack == null ? "" : PreviousTrack.Description;
var position = AudioStreamHelper.GetPosition(LastSampleTriggerTrack);
LastSampleTrigger = new SampleTrigger
{
Start = LastSampleTriggerTrack.SamplesToSeconds(position),
DelayNotes = SamplerDelayNotes,
SampleId = sample.SampleId
};
}
/// <summary>
/// Sets the sample.
/// </summary>
/// <param name="sample">The sample.</param>
public void SetSample(Sample sample)
{
Sample = sample;
BindData();
}
