FFmpeg4.0笔记：采集系统声音

Github

https://github.com/gongluck/FFmpeg4.0-study/tree/master/Cff

// 采集系统声音

void test_systemsound()

{

    bool ret = false;

    std::string err;

    CDemux demux;

    CDecode decode;

    ret = demux.device_register_all(err);

    TESTCHECKRET(ret);

    ret = demux.set_input_format("dshow", err); //采集声卡

    TESTCHECKRET(ret);

    ret = demux.set_dic_opt("framerate", "15", err);

    TESTCHECKRET(ret);

    ret = demux.set_demux_callback(DemuxSystemSoundCB, &decode, err);

    TESTCHECKRET(ret);

    ret = demux.set_demux_status_callback(DemuxStatusCB, &demux, err);

    TESTCHECKRET(ret);

    ret = demux.set_input("audio=virtual-audio-capturer", err);

    TESTCHECKRET(ret);

    ret = demux.openinput(err);

    TESTCHECKRET(ret);

    g_vindex = demux.get_steam_index(AVMEDIA_TYPE_VIDEO, err);

    std::cout << err << std::endl;

    g_aindex = demux.get_steam_index(AVMEDIA_TYPE_AUDIO, err);

    std::cout << err << std::endl;

    ret = decode.set_dec_callback(DecAudioFrameCB, &decode, err);

    TESTCHECKRET(ret);

    ret = decode.copy_param(demux.get_steam_par(g_aindex, err), err);

    TESTCHECKRET(ret);

    ret = decode.codec_open(err);

    TESTCHECKRET(ret);

    ret = demux.begindemux(err);

    TESTCHECKRET(ret);

    std::cout << "input to stop demuxing." << std::endl;

    std::cin.get();

    ret = demux.stopdemux(err);

    TESTCHECKRET(ret);

}

巴特西

FFmpeg4.0笔记：采集系统声音

Github

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