misterinterrupt / PatchLooperExample

Daisy platform Looper example adapted for use on the Patch eurorack module

Description

Loops incoming audio at a user defined interval.
Use the simple controls to record loops, play and pause them, and punch-in record over them. Loops can be very long, or very short.

Controls

Press button two to record. First recording sets loop length. Automatically starts looping if 5 minute limit is hit.
After first loop sound on sound recording enabled. Press button two to toggle SOS recording. Hold button two to clear loop.
The red light indicates record enable. The green light indicates play enable.
Press button one to pause/play loop buffer.
Knob one mixes live input and loop output. Left is only live thru, right is only loop output.

Control	Description	Comment
Encoder Press	Play/Record	pressing the encoder once will begin recording into the buffer
Encoder Long Press	Clear/Stop	pressing the encoder for a second or more will clear the buffer and stop the playback
Ctrl1	Dry/Wet	Control the balance of the wet and dry to the output
Audio Ins	Audio to be captured by the instrument	In 1 mono signal can be recorded or played through dry
Audio Outs	Audio mix	Output 1 plays the mono mix of the looper and the input

Code Snippet

void NextSamples(float &output, float* in, size_t i)  
{  
    if (rec)  
    {  
        WriteBuffer(in, i);  
    }  

    output = buf[pos];

    ......

    if(play)
    {
        pos++;
        pos %= mod;
    }

    if (!rec)
    {
    output = output * drywet + in[i] * (1 -drywet);
    }
}