| 80 | } |
| 81 | |
| 82 | std::vector<float> interleave_planar_channels( |
| 83 | const std::vector<float> & planar_samples, |
| 84 | int channel_count, |
| 85 | int64_t frame_count) { |
| 86 | if (channel_count <= 0 || frame_count < 0) { |
| 87 | throw std::runtime_error("planar audio interleave shape is invalid"); |
| 88 | } |
| 89 | if (planar_samples.size() != static_cast<size_t>(channel_count * frame_count)) { |
| 90 | throw std::runtime_error("planar audio sample count does not match channel/frame shape"); |
| 91 | } |
| 92 | std::vector<float> interleaved(static_cast<size_t>(frame_count * channel_count), 0.0F); |
| 93 | #ifdef _OPENMP |
| 94 | #pragma omp parallel for collapse(2) if(frame_count * channel_count >= 1 << 14) |
| 95 | #endif |
| 96 | for (int64_t frame = 0; frame < frame_count; ++frame) { |
| 97 | for (int channel = 0; channel < channel_count; ++channel) { |
| 98 | interleaved[static_cast<size_t>(frame * channel_count + channel)] = |
| 99 | planar_samples[static_cast<size_t>(channel * frame_count + frame)]; |
| 100 | } |
| 101 | } |
| 102 | return interleaved; |
| 103 | } |
| 104 | |
| 105 | std::vector<float> extract_interleaved_channel( |
| 106 | const std::vector<float> & interleaved_samples, |