我已经阅读了有关VideoFileRenderer的内容,我尝试将其添加到我的代码中以保存视频但是也无法使用它也没有任何方法调用例如record()或save(),尽管它有一个名为release()的方法这将用于结束保存视频.如果任何人有任何想法,这是课程：

@JNINamespace("webrtc::jni")
public class VideoFileRenderer implements Callbacks,VideoSink {
private static final String TAG = "VideoFileRenderer";
private final HandlerThread renderThread;
private final Handler renderThreadHandler;
private final FileOutputStream videoOutFile;
private final String outputFileName;
private final int outputFileWidth;
private final int outputFileHeight;
private final int outputFrameSize;
private final ByteBuffer outputFrameBuffer;
private EglBase eglBase;
private YuvConverter yuvConverter;
private ArrayList<ByteBuffer> rawFrames = new ArrayList();

public VideoFileRenderer(String outputFile,int outputFileWidth,int outputFileHeight,final Context sharedContext) throws IOException {
    if (outputFileWidth % 2 != 1 && outputFileHeight % 2 != 1) {
        this.outputFileName = outputFile;
        this.outputFileWidth = outputFileWidth;
        this.outputFileHeight = outputFileHeight;
        this.outputFrameSize = outputFileWidth * outputFileHeight * 3 / 2;
        this.outputFrameBuffer = ByteBuffer.allocateDirect(this.outputFrameSize);
        this.videoOutFile = new FileOutputStream(outputFile);
        this.videoOutFile.write(("YUV4MPEG2 C420 W" + outputFileWidth + " H" + outputFileHeight + " Ip F30:1 A1:1\n").getBytes(Charset.forName("US-ASCII")));
        this.renderThread = new HandlerThread("VideoFileRenderer");
        this.renderThread.start();
        this.renderThreadHandler = new Handler(this.renderThread.getLooper());
        ThreadUtils.invokeAtFrontUninterruptibly(this.renderThreadHandler,new Runnable() {
            public void run() {
                VideoFileRenderer.this.eglBase = EglBase.create(sharedContext,EglBase.CONFIG_PIXEL_BUFFER);
                VideoFileRenderer.this.eglBase.createDummyPbufferSurface();
                VideoFileRenderer.this.eglBase.makeCurrent();
                VideoFileRenderer.this.yuvConverter = new YuvConverter();
            }
        });
    } else {
        throw new IllegalArgumentException("Does not support uneven width or height");
    }
}

public void renderFrame(I420Frame i420Frame) {
    VideoFrame frame = i420Frame.toVideoFrame();
    this.onFrame(frame);
    frame.release();
}

public void onFrame(VideoFrame frame) {
    frame.retain();
    this.renderThreadHandler.post(() -> {
        this.renderFrameOnRenderThread(frame);
    });
}

private void renderFrameOnRenderThread(VideoFrame frame) {
    Buffer buffer = frame.getBuffer();
    int targetWidth = frame.getRotation() % 180 == 0 ? this.outputFileWidth : this.outputFileHeight;
    int targetHeight = frame.getRotation() % 180 == 0 ? this.outputFileHeight : this.outputFileWidth;
    float frameAspectRatio = (float)buffer.getWidth() / (float)buffer.getHeight();
    float fileAspectRatio = (float)targetWidth / (float)targetHeight;
    int cropWidth = buffer.getWidth();
    int cropHeight = buffer.getHeight();
    if (fileAspectRatio > frameAspectRatio) {
        cropHeight = (int)((float)cropHeight * (frameAspectRatio / fileAspectRatio));
    } else {
        cropWidth = (int)((float)cropWidth * (fileAspectRatio / frameAspectRatio));
    }

    int cropX = (buffer.getWidth() - cropWidth) / 2;
    int cropY = (buffer.getHeight() - cropHeight) / 2;
    Buffer scaledBuffer = buffer.cropAndScale(cropX,cropY,cropWidth,cropHeight,targetWidth,targetHeight);
    frame.release();
    I420Buffer i420 = scaledBuffer.toI420();
    scaledBuffer.release();
    ByteBuffer byteBuffer = JniCommon.nativeAllocateByteBuffer(this.outputFrameSize);
    YuvHelper.I420Rotate(i420.getDataY(),i420.getStrideY(),i420.getDataU(),i420.getStrideU(),i420.getDataV(),i420.getStrideV(),byteBuffer,i420.getWidth(),i420.getHeight(),frame.getRotation());
    i420.release();
    byteBuffer.rewind();
    this.rawFrames.add(byteBuffer);
}

public void release() {
    CountDownLatch cleanupBarrier = new CountDownLatch(1);
    this.renderThreadHandler.post(() -> {
        this.yuvConverter.release();
        this.eglBase.release();
        this.renderThread.quit();
        cleanupBarrier.countDown();
    });
    ThreadUtils.awaitUninterruptibly(cleanupBarrier);

    try {
        Iterator var2 = this.rawFrames.iterator();

        while(var2.hasNext()) {
            ByteBuffer buffer = (ByteBuffer)var2.next();
            this.videoOutFile.write("FRAME\n".getBytes(Charset.forName("US-ASCII")));
            byte[] data = new byte[this.outputFrameSize];
            buffer.get(data);
            this.videoOutFile.write(data);
            JniCommon.nativeFreeByteBuffer(buffer);
        }

        this.videoOutFile.close();
        Logging.d("VideoFileRenderer","Video written to disk as " + this.outputFileName + ". Number frames are " + this.rawFrames.size() + " and the dimension of the frames are " + this.outputFileWidth + "x" + this.outputFileHeight + ".");
    } catch (IOException var5) {
        Logging.e("VideoFileRenderer","Error writing video to disk",var5);
    }

}

}

我找不到任何有用的方法可以提供帮助.