Function resolve_adapter_scale

src/models/vibevoice/lora.cpp:113–130

}

float resolve_adapter_scale(const std::optional<std::filesystem::path> & config_path, float scale_override) {
    if (scale_override > 0.0F) {
        return scale_override;
    }
    if (!config_path.has_value()) {
        throw std::runtime_error(
            "VibeVoice LoRA has no adapter_config.json; pass vibevoice.lora_scale to set the merge scale");
    }
    const auto root = json::parse_file(*config_path);
    const auto rank = json::require_i64(root, "r");
    if (rank <= 0) {
        throw std::runtime_error("VibeVoice LoRA adapter_config.json has non-positive r");
    }
    const float alpha = json::optional_f32(root, "lora_alpha", static_cast<float>(rank));
    const bool use_rslora = json::optional_bool(root, "use_rslora", false);
    const float denom = use_rslora ? std::sqrt(static_cast<float>(rank)) : static_cast<float>(rank);
    return alpha / denom;
}

std::string resolve_base_weight_name(const assets::TensorSource & base, const std::string & module_path) {
    const std::string prefixed = std::string(kLanguageModelPrefix) + module_path + ".weight";