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1
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2 #include "VampJson.h"
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3
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4 using std::cerr;
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5 using std::endl;
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6
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7 int main(int, char **)
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8 {
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9 Vamp::PluginBase::ParameterDescriptor d;
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10 d.identifier = "threshold";
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11 d.name = "Energy rise threshold";
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12 d.description = "Energy rise within a frequency bin necessary to count toward broadband total";
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13 d.unit = "dB";
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14 d.minValue = 0;
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15 d.maxValue = 20.5;
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16 d.defaultValue = 3;
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17 d.isQuantized = false;
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18 cerr << VampJson::fromParameterDescriptor(d).dump() << endl;
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19
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20 Vamp::Plugin::OutputDescriptor od;
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21 od.identifier = "powerspectrum";
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22 od.name = "Power Spectrum";
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23 od.description = "Power values of the frequency spectrum bins calculated from the input signal";
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24 od.unit = "";
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25 od.hasFixedBinCount = true;
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26 od.binCount = 513;
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27 od.hasKnownExtents = false;
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28 od.isQuantized = false;
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29 od.sampleType = Vamp::Plugin::OutputDescriptor::OneSamplePerStep;
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30 cerr << VampJson::fromOutputDescriptor(od).dump() << endl;
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31
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32 cerr << VampJson::fromFeature(Vamp::Plugin::Feature()).dump() << endl;
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33
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34 Vamp::Plugin::Feature f;
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35 f.hasTimestamp = true;
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36 f.timestamp = Vamp::RealTime::fromSeconds(3.14159);
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37 f.hasDuration = false;
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38 f.values = { 1, 2, 3.000001, 4, 5, 6, 6.5, 7 };
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39 f.label = "A feature";
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40 cerr << VampJson::fromFeature(f).dump() << endl;
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41
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42 Vamp::Plugin::FeatureSet fs;
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43 fs[0].push_back(f);
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44 std::string fs_str = VampJson::fromFeatureSet(fs).dump();
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45 cerr << fs_str << endl;
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46
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47 std::string err;
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48
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49 try {
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50 Vamp::Plugin::ParameterDescriptor d1 =
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51 VampJson::toParameterDescriptor
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52 (json11::Json::parse
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53 (VampJson::fromParameterDescriptor(d).dump(), err));
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54 if (err != "") {
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55 cerr << "error returned from parser: " << err << endl;
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56 }
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57 cerr << "\nsuccessfully converted parameter descriptor back from json: serialising it again, we get:" << endl;
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58 cerr << VampJson::fromParameterDescriptor(d1).dump() << endl;
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59 } catch (std::runtime_error &e) {
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60 cerr << "caught exception: " << e.what() << endl;
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61 }
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62
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63 try {
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64 Vamp::Plugin::OutputDescriptor od1 =
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65 VampJson::toOutputDescriptor
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66 (json11::Json::parse
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67 (VampJson::fromOutputDescriptor(od).dump(), err));
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68 if (err != "") {
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69 cerr << "error returned from parser: " << err << endl;
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70 }
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71 cerr << "\nsuccessfully converted output descriptor back from json: serialising it again, we get:" << endl;
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72 cerr << VampJson::fromOutputDescriptor(od1).dump() << endl;
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73 } catch (std::runtime_error &e) {
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74 cerr << "caught exception: " << e.what() << endl;
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75 }
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76
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77 try {
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78 Vamp::Plugin::FeatureSet fs1 =
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79 VampJson::toFeatureSet
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80 (json11::Json::parse(fs_str, err));
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81 if (err != "") {
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82 cerr << "error returned from parser: " << err << endl;
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83 }
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84 cerr << "\nsuccessfully converted feature set back from json: serialising it again, we get:" << endl;
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85 cerr << VampJson::fromFeatureSet(fs1).dump() << endl;
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86 } catch (std::runtime_error &e) {
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87 cerr << "caught exception: " << e.what() << endl;
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88 }
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89
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90 return 0;
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91 }
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92
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93
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94
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