| 162 | } |
| 163 | |
| 164 | void RealtimeAnalyser::getFloatFrequencyData(std::vector<float> & destinationArray) |
| 165 | { |
| 166 | if (!destinationArray.size()) |
| 167 | return; |
| 168 | |
| 169 | doFFTAnalysis(); |
| 170 | |
| 171 | // Convert from linear magnitude to floating-point decibels. |
| 172 | const double minDecibels = m_minDecibels; |
| 173 | size_t sourceLength = magnitudeBuffer().size(); |
| 174 | size_t len = min(sourceLength, destinationArray.size()); |
| 175 | if (len > 0) |
| 176 | { |
| 177 | const float * source = magnitudeBuffer().data(); |
| 178 | for (size_t i = 0; i < len; ++i) |
| 179 | { |
| 180 | float linearValue = source[i]; |
| 181 | double dbMag = !linearValue ? minDecibels : AudioUtilities::linearToDecibels(linearValue); |
| 182 | destinationArray[i] = float(dbMag); |
| 183 | } |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | void RealtimeAnalyser::getByteFrequencyData(std::vector<uint8_t> & destinationArray, bool resample) |
| 188 | { |