Function is_wav_file

src/framework/audio/utility_api.cpp:28–34

}

bool is_wav_file(const std::filesystem::path & path) {
    auto ext = path.extension().string();
    std::transform(ext.begin(), ext.end(), ext.begin(), [](unsigned char ch) {
        return static_cast<char>(std::tolower(ch));
    });
    return ext == ".wav";
}

std::vector<std::filesystem::path> sorted_wav_files(const std::filesystem::path & input_dir) {
    if (!std::filesystem::is_directory(input_dir)) {