| 34 | } |
| 35 | |
| 36 | bool PlotSpectrumBase::GetAudio() |
| 37 | { |
| 38 | mData.reset(); |
| 39 | mDataLen = 0; |
| 40 | |
| 41 | int selcount = 0; |
| 42 | bool warning = false; |
| 43 | for (auto track : TrackList::Get(*mProject).Selected<const WaveTrack>()) |
| 44 | { |
| 45 | auto& selectedRegion = ViewInfo::Get(*mProject).selectedRegion; |
| 46 | auto start = track->TimeToLongSamples(selectedRegion.t0()); |
| 47 | if (selcount == 0) |
| 48 | { |
| 49 | mRate = track->GetRate(); |
| 50 | auto end = track->TimeToLongSamples(selectedRegion.t1()); |
| 51 | auto dataLen = end - start; |
| 52 | // Permit approximately 46.60 minutes of selected samples at |
| 53 | // a sampling frequency of 48 kHz (11.65 minutes at 192 kHz). |
| 54 | auto maxDataLen = size_t(2) << 26; |
| 55 | if (dataLen > maxDataLen) |
| 56 | { |
| 57 | warning = true; |
| 58 | mDataLen = maxDataLen; |
| 59 | } |
| 60 | else |
| 61 | mDataLen = dataLen.as_size_t(); |
| 62 | mData = Floats { mDataLen }; |
| 63 | } |
| 64 | const auto nChannels = track->NChannels(); |
| 65 | if (track->GetRate() != mRate) |
| 66 | { |
| 67 | using namespace BasicUI; |
| 68 | ShowMessageBox( |
| 69 | XO("To plot the spectrum, all selected tracks must have the same sample rate."), |
| 70 | MessageBoxOptions {}.Caption(XO("Error")).IconStyle(Icon::Error)); |
| 71 | mData.reset(); |
| 72 | mDataLen = 0; |
| 73 | return false; |
| 74 | } |
| 75 | Floats buffer1 { mDataLen }; |
| 76 | Floats buffer2 { mDataLen }; |
| 77 | float* const buffers[] { buffer1.get(), buffer2.get() }; |
| 78 | // Don't allow throw for bad reads |
| 79 | if (!track->GetFloats( |
| 80 | 0, nChannels, buffers, start, mDataLen, false, |
| 81 | FillFormat::fillZero, false)) |
| 82 | { |
| 83 | using namespace BasicUI; |
| 84 | ShowMessageBox( |
| 85 | XO("Audio could not be analyzed. This may be due to a stretched or pitch-shifted clip.\nTry resetting any stretched clips, or mixing and rendering the tracks before analyzing"), |
| 86 | MessageBoxOptions {}.Caption(XO("Error")).IconStyle(Icon::Error)); |
| 87 | mData.reset(); |
| 88 | mDataLen = 0; |
| 89 | return false; |
| 90 | } |
| 91 | size_t iChannel = 0; |
| 92 | if (selcount == 0) |
| 93 | { |
nothing calls this directly
no test coverage detected