README.md

Logue BackgroundFX

Store the runtime descriptor passed during initialization so we can access the get_raw_input() API later during rendering.

  // Runtime descriptor for background effect support
  // Provides access to get_raw_input() API which returns audio input unaffected by effect on/off state
  // This enables the effect to run continuously without requiring HOLD (XY Freeze) to be pressed
  static unit_runtime_desc_t s_runtime_desc;

Store Descriptor in unit_init()

  // Store runtime descriptor for background effect support
  // This is needed to access get_raw_input() API in unit_render()
  // which provides raw audio input bypassing the effect on/off routing
  s_runtime_desc = *desc;

Capture the runtime descriptor during initialization to make it available throughout the effect's lifetime.

Modified unit_render()

  __unit_callback void unit_render(const float *in, float *out, uint32_t frames)
  {
    // Use get_raw_input() instead of 'in' parameter to enable background operation
    // This allows the effect to run continuously without requiring HOLD (XY Freeze)
    //
    // Background vs Normal effects:
    // - Normal: Uses 'in' parameter, which is affected by effect on/off state
    //           When pad is not touched (and HOLD is off), input is bypassed
    // - Background: Uses get_raw_input(), which provides unaffected raw audio input
    //               Effect runs continuously regardless of touch pad state
    const unit_runtime_genericfx_context_t *ctxt =
      static_cast<const unit_runtime_genericfx_context_t *>(s_runtime_desc.hooks.runtime_context);

    const float *raw_input = ctxt->get_raw_input();
    s_effect_instance.process(raw_input, out, frames);
  }

Instead of using the in parameter (which is affected by effect on/off state), we now access the raw input buffer via get_raw_input(). This makes the effect run continuously in the background without requiring the HOLD button to be pressed.

How it works

Before (Normal Effect):

• Uses in parameter in unit_render()
• Input is controlled by touch pad state and effect on/off routing
• Requires HOLD (XY Freeze) to keep processing when pad is not touched

After (Background Effect):

• Uses ctxt->get_raw_input() which provides raw, unaffected audio
• Processes audio continuously regardless of touch pad state
• Effect runs in the background without needing HOLD