Blue Cat Audio

Eine Alte Oma · Post by **Eine Alte Oma** » Wed Apr 22, 2020 9:32 am

i'm having trouble importing the wav-file called "PinkNoise44100.wav", a 24bit mono wav-file on a 44100 samplerate of 1sec. In the following code i show what i try to do to import it. The convertToUnix-method is just copied from the presets. I tried with and without. Same for the way i structure my path. I tried this, the absolute path, but also relative paths. No matter what i do, my output is "couldn't make some noise". Does anyone see my error or can give me tipps on how to debug situations like this better? Yes, the wav-file is located in the same folder as the script.

Code: Select all

string path = scriptFilePath;
WaveFileData waveFileData;
path = path.substr(0, path.findFirst("main.cxx", 0))
  + "PinkNoise44100.wav";
convertToUnix(path);
print(path);
if(waveFileData.loadFile(path))
  setBuffer(waveFileData.interleavedSamples);
else
  print("couldn't make some noise");

Eine Alte Oma · Post by **Eine Alte Oma** » Wed Apr 22, 2020 11:23 am

ilya helped me to find out that the absolute paths are indeed correct by suggesting i should just try to import and read the file as strings first, which sort of worked i guess^^. it produces some weird characters as output which is what can be expected when importing a wav-file like that i guess. now the only question left is why WaveFileData can't import the file like this. i am certainly missing something... but what?

ilyaorlov · Post by **ilyaorlov** » Wed Apr 22, 2020 12:41 pm

I think you should go into WaveFile.hxx and test how it all goes there inside .loadFile and related methods. I usually just do "print" from some points inside the file to see if it's there or not.

Eine Alte Oma · Post by **Eine Alte Oma** » Wed Apr 22, 2020 1:09 pm

good point. so i just tried to put some prints in the loadFile-method and here's what i found:

Code: Select all

bool ok = false;
        // open the file
        file f;
        if(f.open(filePath,"r")>=0)
        {
            // read the header
            WaveFileHeader header;
            if(header.read(f))
            {
                ok=true;

this is part of the code in that method. when i put a print() after if(f.open(filePath,"r")>=0) it works. so apparently the file can be opened.

but when i put a print before ok=true; then it doesn't work, which implies that header.read(f) is not true. so the WaveFileHeader header fails to interpret the file.

in the header-object i found out that it fails at this part of the code:

Code: Select all

tempString=f.readString(4);
                if(tempString=="fmt ")
                {
                    uint64 fmtSize = f.readUInt(4);
                    // ....

tempString seems not to be "fmt" at that point

Eine Alte Oma · Post by **Eine Alte Oma** » Wed Apr 22, 2020 1:13 pm

i just wonder why anything would be missing in this wav-file in the first place. i created the pink noise with audacity's pink noise generator, then imported that into cubase to normalize and lowcut the data and exported a new file from there. i think it can be expected that steinberg knows what to include into a wav-file, so i suspect that something about this wav-reader maybe isn't up to date with current wav-file formats or something? but the problem is i'm really no expert on that

Eine Alte Oma · Post by **Eine Alte Oma** » Wed Apr 22, 2020 1:26 pm

ok actually it was really cubase' fault. i changed the export settings to this and then it worked, lol^^ i don't know which of these made the difference but now it works so i guess i'm fine with that

ilyaorlov · Post by **ilyaorlov** » Wed Apr 22, 2020 2:21 pm

Great that you've figured it out!

Eine Alte Oma · Post by **Eine Alte Oma** » Wed Apr 22, 2020 5:06 pm

not without your help. sometimes the hardest aspect about plug'n script seems to be that it doesn't have the most active community, but you're always there.

ilyaorlov · Post by **ilyaorlov** » Wed Apr 22, 2020 5:53 pm

Blue Cat Audio · Post by **Blue Cat Audio** » Wed Apr 22, 2020 6:55 pm

The wav file reader class is very simple, so it will indeed not read all crazy types of wav files.

padillac · Post by **padillac** » Thu Mar 17, 2022 8:11 am

What constitutes a "crazy" type of wave file?

Looking at the header reading, it looks like any BWF headers will cause it to fail. That's a bummer, as a lot of sample packs include BWF headers. It took me a while to figure out that's what was going on - and after I resaved the samples without BWF headers, it loaded fine.

I wonder if anybody by now has taken a stab at skipping over BWF headers?

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Plug'n Script: Trouble with importing a wav file