Method prepareInput

Server/Source/ScreenRecorder.cpp:267–386

}

bool ScreenRecorder::prepareInput() {
    traceScope();
    AVDictionary* opts = nullptr;

    // check if the plugin window is fully visible
    if (m_captureRect.getX() < 0 || m_captureRect.getY() < 0) {
        logError("The plugin window must be fully visible to be captured!");
        return false;
    }

#ifdef JUCE_MAC
    // This works only when building ffmpeg for OSX 10.8+. Thats why there is a separate 10.7 build.
    // av_dict_set(&opts, "capture_cursor", "0", 0); // the default is 0 anyways, so we don't need to call this.
    av_dict_set(&opts, "pixel_format", "yuyv422", 0);
#else
    av_dict_set(&opts, "draw_mouse", "0", 0);
    av_dict_set(&opts, "framerate", "30", 0);
    String vidSize;
    vidSize << m_captureRect.getWidth() << "x" << m_captureRect.getHeight();
    av_dict_set(&opts, "video_size", vidSize.getCharPointer(), 0);
    av_dict_set(&opts, "offset_x", String(m_captureRect.getX()).getCharPointer(), 0);
    av_dict_set(&opts, "offset_y", String(m_captureRect.getY()).getCharPointer(), 0);

    logln("setting input options:");
    logln("  video_size=" << vidSize);
    logln("  offset_x=" << m_captureRect.getX());
    logln("  offset_y=" << m_captureRect.getY());
#endif

    int ret;
    String streamUrl = m_inputStreamUrl;
#ifdef JUCE_LINUX
    streamUrl = streamUrl << "+" << m_captureRect.getX() << "," << m_captureRect.getY();
#endif
    logln("opening input format " << m_inputFmtName << ": " << streamUrl);

    m_captureFmtCtx = avformat_alloc_context();
    ret = avformat_open_input(&m_captureFmtCtx, streamUrl.getCharPointer(), m_inputFmt, &opts);
    if (ret != 0) {
        logError("prepareInput: avformat_open_input failed: err = " + String(ret));
        return false;
    }

    ret = avformat_find_stream_info(m_captureFmtCtx, nullptr);
    if (ret < 0) {
        logError("prepareInput: avformat_find_stream_info failed: " + String(ret));
        return false;
    }

    logln("looking for video stream (input has " << String(m_captureFmtCtx->nb_streams) << " streams)");

    m_captureStreamIndex = -1;
    for (uint16 i = 0; i < m_captureFmtCtx->nb_streams; i++) {
        m_captureStream = m_captureFmtCtx->streams[i];
        if (m_captureStream->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
            m_captureStreamIndex = i;
            break;
        }