Build for
PocketDAW.

#include "pocketdaw.h"

// Declare your synth
const char* pdsynth_name() { return "My Synth"; }
int pdsynth_param_count() { return 4; }

// Host gives you primitives — osc, filter, ADSR, FX bus
PdSynthInstance pdsynth_create(float sr, PdSynthHost* host) {
    MySynth* s = calloc(1, sizeof(MySynth));
    s->sr = sr; s->host = host;
    return s;
}

// Process audio — called every frame
void pdsynth_process(PdSynthInstance inst, PdSynthAudio* buf) {
    MySynth* s = (MySynth*)inst;
    for (int i = 0; i < buf->frames; i++) {
        float v = s->host->osc_sample(OSC_SAW, s->phase, s->freq);
        buf->outL[i] = buf->outR[i] = v * s->amp;
        s->phase += s->freq / s->sr;
    }
}

// Optional: draw on the graphics page with live audio data
void pdsynth_draw(PdSynthInstance inst, SDL_Renderer* r, PdVisualCtx* ctx) {
    // ctx->scopeBufL/R, ctx->peakL, ctx->noteOn — all live
    SDL_SetRenderDrawColor(r, 0, 255, 65, 255);
    // draw waveform, meters, particles — go wild
}

# Compile for device (aarch64)
aarch64-none-linux-gnu-gcc -shared -fPIC -o my-synth.so my-synth.c -lm

# Or desktop Linux
gcc -shared -fPIC -o my-synth.so my-synth.c -lm

# Drop it in — no restart needed
cp my-synth.so plugins/synths/