Please Ignore. Problem was an old BassFx.dll 




When I compile this piece of code in Debug mode, the code runs perfect.

static void Main(string[] args)
{
Bass.BASS_Init(0, 44100, 0, IntPtr.Zero);

int stream = Bass.BASS_StreamCreateFile(@"C:\test.mp3", 0, 0, BASSFlag.BASS_STREAM_DECODE);
if (stream != 0)
{
float newBPM = BassFx.BASS_FX_BPM_DecodeGet(stream, 0, 0, 0, BASSFXBpm.BASS_FX_BPM_BKGRND | BASSFXBpm.BASS_FX_FREESOURCE | BASSFXBpm.BASS_FX_BPM_MULT2, null, IntPtr.Zero);
Console.Write(newBPM.ToString());
}

Bass.BASS_Free();
}

Where I change the output to Release, I get :

A call to PInvoke function 'Bass.Net!Un4seen.Bass.AddOn.Fx.BassFx::BASS_FX_BPM_DecodeGet' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.

Hi,

I would like to be able to be notified or determine when a buffer underrun occurs when using ASIO and BassMix.

Is this possible with Bass/BassAsio?

Hi,

I just found out that the flag WaveForm.MARKERDRAWTYPE.NamePositionAlternate fails to work when you have 2 markers at the same position. Instead of drawinf the text at alternating positions, they are drawn at the same position. If I change the position of either one of the markers, they are drawn at alternating positions.

Is there a workaround for this problem?

I was using Lame v3.96.1, after I upgraded to a more recent version all is working perfect now.

Also thank you for the quick release of Bass.NET 

When is a New version of Bass.NET planned? At the moment it is not working with the new BassFX dll (BPM functions)

Hi,

Can anybody tell me why the resulting MP3 is completly silent. If I use the FlacEncoder all works well.

int channel = BassCd.BASS_CD_StreamCreate(driveNum, cddbTrack.TrackNumber-1, Un4seen.Bass.BASSFlag.BASS_STREAM_DECODE);

lameEncoder = new EncoderLAME(channel);
lameEncoder.InputFile = null; //STDIN
lameEncoder.OutputFile = "C:\\test.mp3";
lameEncoder.LAME_Bitrate = 320;
lameEncoder.LAME_Mode = EncoderLAME.LAMEMode.Default;
lameEncoder.LAME_TargetSampleRate = (int)EncoderLAME.SAMPLERATE.Hz_44100;
lameEncoder.LAME_Quality = EncoderLAME.LAMEQuality.Q0;
lameEncoder.Start(null, IntPtr.Zero, false);

while (Bass.BASS_ChannelIsActive(channel) != BASSActive.BASS_ACTIVE_STOPPED && !abort)
{
totalBytes += Bass.BASS_ChannelGetData(channel, buffer, dwBytes);
progressHandler(((float)totalBytes / (float)length), ref abort);
}

I also noticed that when you detect beats and write the waveform to a file, you end up with an empty waveform when you load it back into the waveform.

Problem is solved by downloading the newer 2.4.9.0 version of Bass .Net (The previous version with the wrong version number had this problem).


When you save a WaveForm to disk using the function :

...
waveForm.FileName = "C:\\Test_File.MP3";
waveForm.WaveFormSaveToFile("C:\\TEST.WF", true);

And load the WaveForm back using the function :

...
waveForm.WaveFormLoadFromFile("C:\\TEST.WF", true);

the waveForm.FileName field is empty.

When I look in the file C:\TEST.WF I can see the given filename (C:\Test_File.mp3).

Is there something broken? I can recall this used to work, since I stored the original gain information in the filename property.

Hi Ian,

Thank you very much, that works like a charm.

Kind regards,
Harold

Hello,

I have got an 8 channel Decoding Mixer. I would like to record the first 2 channels.

I feed the decoding channel from the Mixer into a BassAsioHandler. When I also feed this decoding channel in the encoder it records the output from all 8 channels.

I tried to feed the decoding channel into a new Mixer and use a MatrixMixer ot only select the first 2 channels, but then the encoded file is empty. When I Use BASS_ChannelGetData the encoded output is filled, but this steals samples from the ASIO output.

Any help would be appreciated.

Hi,

I tried the .Net Demo on a Windows 7 machine and I don't hear any audio, the video is playing. When I try the Demo on a Windows XP machine all is working fine. Am I doing something wrong?

Hi,

Is it true that you have to create a new waveform everytime? I am trying to re-use a created waveform, but it refuses to calculate the waveform.

I create a WaveForm in the formload en using it in a button press.

if I run this code 1 time, the peakfile is created an has data inside the file.

waveForm.RenderStart(decodeStream, false, false);
waveForm.WaveFormSaveToFile("c:\\temp\\peak.wf", true);
waveForm.Reset();

If I run this code a second time RenderStart returns immediately, the peakfile is updated, but apart from the header it contains only 0's.

What am I doing wrong?

I tried to use the waveform class using this code :

WaveForm _wf;

private void Initialize()
{
    _wf = new WaveForm;
}

private void LoadFile(string fileName)
{
    WaveForm.FileName = fileName;
    WaveForm.RenderStart(true, BASSFlag.BASS_DEFAULT);
    if (WaveForm.NotifyHandler == null)
        WaveForm.NotifyHandler = new WAVEFORMPROC(WaveFormUpdate);
}

The first time everything works fine, but I can't get it to work the second time. either with the same or a different filename. If I create a new WaveForm everytime it works.

Is this meant to work like this? Or am I missing something?

The sample for BASS_FX_BPM_BeatDecodeGet from the helpfile doesn't seem to be right. It uses a call to BASS_FX_BPM_DecodeGet instead of BASS_FX_BPM_BeatDecodeGet

Hello,

I'm looking for the .NET examples. I Once downloaded them (or got them in a Bass.Net installation).

Where can I get the newest examples (If there are any )?

gr. Harold

The first example works and return 1500, but that's without playing.
The second example return 0 as position instead of 1500.

    aDecodingChannel := BASS_StreamCreateFile( False, PChar(sFilename), 0, 0, BASS_STREAM_DECODE );
    BASS_Mixer_StreamAddChannel(aMixingChannel, aDecodingChannel, BASS_MIXER_MATRIX);
    BASS_ChannelSetPosition( aDecodingChannel, 1500, BASS_POS_BYTE);
    BASS_Mixer_ChannelSetPosition( aMixingChannel, 0, BASS_POS_BYTE);
    ShowMessage(IntToStr(BASS_Mixer_ChannelGetPosition( aDecodingChannel, BASS_POS_BYTE)));

    aDecodingChannel := BASS_StreamCreateFile( False, PChar(sFilename), 0, 0, BASS_STREAM_DECODE );
    BASS_Mixer_StreamAddChannel(aMixingChannel, aDecodingChannel, BASS_MIXER_MATRIX);
    BASS_ChannelPlay( aMixingChannel, True );
    BASS_ChannelPause( aMixingChannel );
    BASS_ChannelSetPosition( aDecodingChannel, 1500, BASS_POS_BYTE);
    BASS_Mixer_ChannelSetPosition( aMixingChannel, 0, BASS_POS_BYTE);
    ShowMessage(IntToStr(BASS_Mixer_ChannelGetPosition( aDecodingChannel, BASS_POS_BYTE)));

Anything I have missed?


Kind regards,
Harold Oudshoorn

Hello,

In this example

BASS_ChannelPlay( aMixChannel, True );

// Wait for position 3000

BASS_ChannelPause( aMixChannel );
BASS_Mixer_ChannelSetPosition( aOutputChannel, 15000, BASS_POS_BYTE);

NewPos := BASS_Mixer_ChannelGetPosition( aOutputChannel,BASS_POS_BYTE );

Newpos returns with 3000 instead of 15000.

Is there any way to make the function return 15000. ie Flushing the mixer buffer?

Kind regards,
Harold Oudshoorn

Hi,

Completely missed this flag. 

It's working perfect right now. Thanks.

Kind regards,
Harold Oudshoorn

Hi,

Here's a sample which shows the problem. The problem shows with both the Mixing and Decoding channel.

BassMix.dll version 2.4.0.2, Bass.dll version 2.4.2.2

..
..
  public
    aDecodingChannel : HStream;
    aMixingChannel : HStream;
..
..

procedure TForm2.Button1Click(Sender: TObject);
var
  sFilename : String;
begin
  BASS_Init(1, 44100, 0, 0, nil);
  aMixingChannel := BASS_Mixer_StreamCreate( 44100, 2, 0  );
  if PromptForFileName(sFilename) then begin
    aDecodingChannel := BASS_StreamCreateFile( False, PChar(sFilename), 0, 0, BASS_STREAM_DECODE );
    BASS_Mixer_StreamAddChannel(aMixingChannel, aDecodingChannel, BASS_MIXER_MATRIX);
    BASS_ChannelPlay( aMixingChannel, True );
    tmrVuMeter.Enabled := True;
  end;
end;

procedure TForm2.tmrVuMeterTimer(Sender: TObject);
var
  iVuLevel : Integer;
begin
  iVuLevel := LoWord(BASS_Mixer_ChannelGetLevel( aDecodingChannel ));
  ProgressBar1.Position := Round( ProgressBar1.Max * (iVuLevel/  32768 ) );
end;

Kind Regards,
Harold Oudshoorn

Hi,

The Sync is working, thanks. I wasn't aware of the BASS_Mixer_ChannelSetSync funtion.

The ChannelGetLevel I already tried with both the Decoding and the MixingChannel. The result is all the same. Anymore ideas? Samples? Snippits?

Kind Regards,
Harold