Function SetRandomInputs

samples/cpp/api/api_intro.cc:27–55

using namespace ppl::common;

static bool SetRandomInputs(Runtime* runtime) {
    for (uint32_t c = 0; c < runtime->GetInputCount(); ++c) {
        auto t = runtime->GetInputTensor(c);
        auto& shape = *t->GetShape();

        auto nr_element = shape.CalcBytesIncludingPadding() / sizeof(float);
        vector<float> buffer(nr_element);

        // fill random input data
        std::default_random_engine eng;
        std::uniform_real_distribution<float> dis(-1.0f, 1.0f);
        for (uint32_t i = 0; i < nr_element; ++i) {
            buffer[i] = dis(eng);
        }

        // our random data is treated as NDARRAY
        ppl::nn::TensorShape src_desc = *t->GetShape();
        src_desc.SetDataFormat(DATAFORMAT_NDARRAY);

        // input tensors may require different data format
        auto status = t->ConvertFromHost(buffer.data(), src_desc);
        if (status != RC_SUCCESS) {
            cerr << "set tensor[" << t->GetName() << "] content failed: " << GetRetCodeStr(status) << endl;
            return false;
        }
    }

    return true;
}

static void PrintInputOutputInfo(const Runtime* runtime) {
    cout << "----- input info -----" << endl;