Android webrtc自定义视频源格式问题?
创始人
2024-08-19 07:00:50
0

在 Android 中使用 WebRTC 自定义视频源格式可以通过实现 VideoCapturer 接口来实现。以下是一个示例代码:

首先,创建一个实现 VideoCapturer 接口的自定义视频源类,例如 CustomVideoCapturer

import android.content.Context;
import android.graphics.ImageFormat;
import android.hardware.Camera;
import android.os.SystemClock;

import org.webrtc.CameraEnumerationAndroid;
import org.webrtc.Logging;
import org.webrtc.SurfaceTextureHelper;
import org.webrtc.VideoCapturer;
import org.webrtc.VideoFrame;
import org.webrtc.VideoFrame.Buffer;
import org.webrtc.VideoSink;

import java.nio.ByteBuffer;

public class CustomVideoCapturer implements VideoCapturer {

    private static final String TAG = "CustomVideoCapturer";
    private static final int FRAME_RATE = 30;
    private static final int IMAGE_WIDTH = 640;
    private static final int IMAGE_HEIGHT = 480;

    private SurfaceTextureHelper surfaceTextureHelper;
    private VideoSink videoSink;
    private Camera camera;
    private int cameraId;
    private boolean running;
    private boolean capturingFrames;

    public CustomVideoCapturer(Context context, VideoSink videoSink) {
        this.videoSink = videoSink;
        this.cameraId = CameraEnumerationAndroid.getDeviceIndex(CameraEnumerationAndroid.getNameOfFrontFacingDevice());
    }

    @Override
    public void initialize(SurfaceTextureHelper surfaceTextureHelper, Context context, CapturerObserver capturerObserver) {
        this.surfaceTextureHelper = surfaceTextureHelper;
    }

    @Override
    public void startCapture(int width, int height, int framerate) {
        if (running) return;
        running = true;

        camera = Camera.open(cameraId);
        Camera.Parameters parameters = camera.getParameters();
        parameters.setPreviewSize(IMAGE_WIDTH, IMAGE_HEIGHT);
        parameters.setPreviewFormat(ImageFormat.NV21);
        camera.setParameters(parameters);

        camera.setPreviewCallbackWithBuffer(new Camera.PreviewCallback() {
            @Override
            public void onPreviewFrame(byte[] data, Camera camera) {
                if (capturingFrames) {
                    Buffer buffer = new VideoFrame.Buffer(data, IMAGE_WIDTH, IMAGE_HEIGHT, ImageFormat.NV21);
                    VideoFrame frame = new VideoFrame(buffer, 0, SystemClock.elapsedRealtimeNanos());
                    videoSink.onFrame(frame);
                    frame.release();
                }
                camera.addCallbackBuffer(data);
            }
        });

        int bufferSize = IMAGE_WIDTH * IMAGE_HEIGHT * ImageFormat.getBitsPerPixel(ImageFormat.NV21) / 8;
        byte[] buffer = new byte[bufferSize];
        camera.addCallbackBuffer(buffer);

        camera.startPreview();
        capturingFrames = true;
    }

    @Override
    public void stopCapture() {
        if (!running) return;
        running = false;

        capturingFrames = false;
        camera.stopPreview();
        camera.setPreviewCallbackWithBuffer(null);
        camera.release();
    }

    @Override
    public void changeCaptureFormat(int width, int height, int framerate) {
        // Not supported
    }

    @Override
    public void dispose() {
        stopCapture();
    }

    @Override
    public boolean isScreencast() {
        return false;
    }
}

然后,在使用 WebRTC 的地方,使用自定义视频源类来进行视频捕获:

import org.webrtc.EglBase;
import org.webrtc.PeerConnectionFactory;
import org.webrtc.SurfaceViewRenderer;
import org.webrtc.VideoCapturer;
import org.webrtc.VideoSink;
import org.webrtc.VideoSource;

public class MainActivity extends AppCompatActivity {

    private PeerConnectionFactory factory;
    private VideoSource videoSource;
    private VideoCapturer videoCapturer;

    private SurfaceViewRenderer surfaceViewRenderer;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        surfaceViewRenderer = findViewById(R.id.surface_view_renderer);
        EglBase.Context eglBaseContext = EglBase.create().getEglBaseContext();
        surfaceViewRenderer.init(eglBaseContext, null);

        factory = new PeerConnectionFactory.Builder().createPeerConnectionFactory();

        videoCapturer = new CustomVideoCapturer(this, new VideoSink() {
            @Override
            public void onFrame(VideoFrame videoFrame) {
                // 处理视频帧
                surfaceViewRenderer.renderFrame(videoFrame);
            }
        });

        videoSource = factory.createVideoSource(videoCapturer.isScreencast());
        videoCapturer.initialize(null, this, videoSource.getCapturerObserver());
        videoCapturer.startCapture(640, 480, 30);

        surfaceViewRenderer.setMirror(true);
        videoSource.adaptOutputFormat(640, 480, 30);
        videoSource.add

相关内容

热门资讯

记者揭秘!智星菠萝辅助(透视辅... 记者揭秘!智星菠萝辅助(透视辅助)拱趴大菠萝辅助神器,扑克教程(有挂细节);模式供您选择,了解更新找...
一分钟揭秘!约局吧能能开挂(透... 一分钟揭秘!约局吧能能开挂(透视辅助)hhpoker辅助靠谱,2024新版教程(有挂教学);约局吧能...
透视辅助!wepoker模拟器... 透视辅助!wepoker模拟器哪个好用(脚本)hhpoker辅助挂是真的,科技教程(有挂技巧);囊括...
透视代打!hhpkoer辅助器... 透视代打!hhpkoer辅助器视频(辅助挂)pokemmo脚本辅助,2024新版教程(有挂教程);风...
透视了解!约局吧德州真的有透视... 透视了解!约局吧德州真的有透视挂(透视脚本)德州局HHpoker透视脚本,必胜教程(有挂分析);亲,...
六分钟了解!wepoker挂底... 六分钟了解!wepoker挂底牌(透视)德普之星开辅助,详细教程(有挂解密);德普之星开辅助是一种具...
9分钟了解!wpk私人辅助(透... 9分钟了解!wpk私人辅助(透视)hhpoker德州透视,插件教程(有挂教学);风靡全球的特色经典游...
推荐一款!wepoker究竟有... 推荐一款!wepoker究竟有透视(脚本)哈糖大菠萝开挂,介绍教程(有挂技术);囊括全国各种wepo...
每日必备!wepoker有人用... 每日必备!wepoker有人用过(脚本)wpk有那种辅助,线上教程(有挂规律);wepoker有人用...
玩家必备教程!wejoker私... 玩家必备教程!wejoker私人辅助软件(脚本)哈糖大菠萝可以开挂,可靠技巧(有挂神器)申哈糖大菠萝...