| 129 | } |
| 130 | |
| 131 | bool LuaMimoTransform::calculate( |
| 132 | PJ::Timestamp time, PJ::Span<const PJ::VarValue> inputs, PJ::Timestamp& out_time, |
| 133 | std::vector<PJ::VarValue>& output) { |
| 134 | out_time = time; // MIMO v1: outputs share the joined input timestamp (no explicit out_time). |
| 135 | if (!instance_ || inputs.empty()) { |
| 136 | if (instance_) { |
| 137 | error_ = instance_->error(); |
| 138 | } |
| 139 | return false; |
| 140 | } |
| 141 | if (instance_->failed()) { |
| 142 | error_ = instance_->error(); |
| 143 | return false; |
| 144 | } |
| 145 | |
| 146 | // Capture the session epoch from the first sample, then rebase on the int64 spine |
| 147 | // BEFORE the double cast (epoch-in-double quantizes to ~256 ns — see header). |
| 148 | if (!has_session_start_) { |
| 149 | session_start_ns_ = time; |
| 150 | has_session_start_ = true; |
| 151 | } |
| 152 | const double t_sec = static_cast<double>(time - session_start_ns_) * 1e-9; |
| 153 | |
| 154 | std::vector<double> input_doubles; |
| 155 | input_doubles.reserve(inputs.size()); |
| 156 | for (const PJ::VarValue& v : inputs) { |
| 157 | input_doubles.push_back(proc::detail::toDouble(v)); |
| 158 | } |
| 159 | |
| 160 | const FilterInstance::MimoResult r = instance_->calculateMimo(t_sec, input_doubles); |
| 161 | if (instance_->failed()) { |
| 162 | error_ = instance_->error(); // sticky: fail the node, do not corrupt downstream |
| 163 | return false; |
| 164 | } |
| 165 | if (r.suppress) { |
| 166 | return false; |
| 167 | } |
| 168 | if (r.values.size() != num_outputs_) { |
| 169 | error_ = "filter returned " + std::to_string(r.values.size()) + " value(s) but " + std::to_string(num_outputs_) + |
| 170 | " output(s) are declared"; |
| 171 | return false; |
| 172 | } |
| 173 | |
| 174 | // `output` is pre-sized to num_outputs_ by the engine. Every output mirrors the |
| 175 | // first input (input 0) when out_mode_ == kMirror. |
| 176 | const PJ::VarValue& mirror_input = inputs[0]; |
| 177 | for (std::size_t k = 0; k < num_outputs_; ++k) { |
| 178 | output[k] = makeOutputValue(r.values[k], mirror_input); |
| 179 | } |
| 180 | return true; |
| 181 | } |
| 182 | |
| 183 | } // namespace PJ::scripting |