Function loadAudioFileAndProcessSamples

examples/examples.cpp:106–145

=======================================================================

    
    //=======================================================================
    void loadAudioFileAndProcessSamples()
    {
        //---------------------------------------------------------------
        std::cout << "**********************" << std::endl;
        std::cout << "Running Example: Load Audio File and Process Samples" << std::endl;
        std::cout << "**********************" << std::endl << std::endl;
        
        //---------------------------------------------------------------
        // 1. Set a file path to an audio file on your machine
        const std::string inputFilePath = std::string (PROJECT_BINARY_DIR) + "/test-audio.wav";
        
        //---------------------------------------------------------------
        // 2. Create an AudioFile object and load the audio file
        
        AudioFile<float> a;
        bool loadedOK = a.load (inputFilePath);
        
        /** If you hit this assert then the file path above
         probably doesn't refer to a valid audio file */
        assert (loadedOK);
        
        //---------------------------------------------------------------
        // 3. Let's apply a gain to every audio sample
        
        float gain = 0.5f;

        for (int i = 0; i < a.getNumSamplesPerChannel(); i++)
        {
            for (int channel = 0; channel < a.getNumChannels(); channel++)
            {
                a.samples[channel][i] = a.samples[channel][i] * gain;
            }
        }
        
        //---------------------------------------------------------------
        // 4. Write audio file to disk
        
        std::string outputFilePath = "quieter-audio-file.wav"; // change this to somewhere useful for you
        a.save (outputFilePath, AudioFileFormat::Wave);
    }
}