main.cpp

void test_soul()
{
    SF_INFO outinfo;
    memset(&outinfo,0,sizeof(SF_INFO));
    int outlen = 4*44100;
    ClassicRingtone tone;
    std::cout << "soul dsp num outputs : " <<  tone.getOutputEndpoints().size() << "\n";
    outinfo.channels = tone.getOutputEndpoints().size();
    outinfo.format = SF_FORMAT_FLOAT|SF_FORMAT_WAV;
    outinfo.samplerate = 44100;
    std::vector<float> outbuf(outlen*outinfo.channels);
    SNDFILE* outfile = sf_open("C:\\MusicAudio\\soultests\\soul_out1.wav",SFM_WRITE,&outinfo);
    if (outfile)
    {
        ClassicRingtone::RenderContext ctx;
        ctx.inputChannels = 0;
        ctx.numFrames = outlen;
        float* outchans[8];
        for (int i=0;i<outinfo.channels;++i)
            outchans[i] = &outbuf[i*outlen];

        ctx.outputChannels = outchans;
        ctx.numOutputChannels = outinfo.channels;
        tone.sampleRate = outinfo.samplerate;
        tone.render(ctx);
        sf_writef_float(outfile,outbuf.data(),outlen);
        sf_close(outfile);
    }
}