Playing audio files in a Plugin

Audio Plugins
1

Hello folks!

I’m trying to make a wav player plugin.
In order to achieve this, I :

created an audioFormatReader and gave it the wave file;
created an audioSampleBuffer;
resized it to fit the file’s length;
called the readFromAudioReader function
and gave it the reader.

Now, in the processBlock function, I need to copy the samples from the wave buffer into the function’s buffer.
I tried with copyFrom, iterations, nothing!

Can anybody help me?
I’m not so good with dsp stuff!

2

use getSampleData and just copy it?

3

Yeah, that’s the point.
I need to deal with the processBlock buffer’s size and the wavefile’s size.

I have to write a iteration such as:

int blockSize = buffer.getSampleData(0);

while (–blockSize >=0)
{
copy N samples from wavefile into buffer;
when the last of N samples is reached,
get the next N samples;
repeat until the end of wavefile.
}

where N samples is equal to blockSize.

I think you made something like this in your SamplerVoice::renderNextBlock, Jules.

4

Unless you’ve got a very good reason to write your own algorithm, I’d really recommend just using the Sampler class to do all this for you…

5

Ok, I’ve done it using the audioFormatReader - audioTransportSource way.
I was trying to recreate your classes!!!

Thank you !