Я хочу использовать веб-камеру в качестве камеры в эмуляторе Android .
Я упомянул это , но получил следующую ошибку при запуске WebcamBroadcaster:
Невозможно найти подходящего игрока
Как упомянуто в этой ссылке, я создал WebcamBroadcaster как отдельное Java-приложение, и к моей машине подключена рабочая веб-камера.
Когда я запускаю камеру эмулятора напрямую (не в любом приложении), он работает. Но я пытаюсь использовать камеру в своем приложении, используя WebcamBroadcaster, но это не работает. Скорее это дает анимацию стиля шахматной доски.
Я новичок в разработке для Android, поэтому любая помощь приветствуется!
WebcamBroadcaster.java
public class WebcamBroadcaster {
public static boolean RAW = false;
private static Player createPlayer(int width, int height) {
try {
Vector<CaptureDeviceInfo> devices = CaptureDeviceManager
.getDeviceList(null);
for (CaptureDeviceInfo info : devices) {
DataSource source;
Format[] formats = info.getFormats();
for (Format format : formats) {
if ((format instanceof RGBFormat)) {
RGBFormat rgb = (RGBFormat) format;
Dimension size = rgb.getSize();
if (size.width != width || size.height != height)
continue;
if (rgb.getPixelStride() != 3)
continue;
if (rgb.getBitsPerPixel() != 24)
continue;
if (rgb.getLineStride() != width * 3)
continue;
MediaLocator locator = info.getLocator();
source = Manager.createDataSource(locator);
source.connect();
System.out.println("RGB Format Found");
((CaptureDevice) source).getFormatControls()[0]
.setFormat(rgb);
} else if ((format instanceof YUVFormat)) {
YUVFormat yuv = (YUVFormat) format;
Dimension size = yuv.getSize();
if (size.width != width || size.height != height)
continue;
MediaLocator locator = info.getLocator();
source = Manager.createDataSource(locator);
source.connect();
System.out.println("YUV Format Found");
((CaptureDevice) source).getFormatControls()[0]
.setFormat(yuv);
} else {
continue;
}
return Manager.createRealizedPlayer(source);
}
}
} catch (IOException e) {
System.out.println(e.toString());
e.printStackTrace();
} catch (NoPlayerException e) {
System.out.println(e.toString());
e.printStackTrace();
} catch (CannotRealizeException e) {
System.out.println(e.toString());
e.printStackTrace();
} catch (NoDataSourceException e) {
System.out.println(e.toString());
e.printStackTrace();
}
return null;
}
public static void main(String[] args) {
int[] values = new int[args.length];
for (int i = 0; i < values.length; i++) {
values[i] = Integer.parseInt(args[i]);
}
//length of args and values is **0**
WebcamBroadcaster wb;
if (values.length == 0) {
wb = new WebcamBroadcaster();
} else if (values.length == 1) {
wb = new WebcamBroadcaster(values[0]);
} else if (values.length == 2) {
wb = new WebcamBroadcaster(values[0], values[1]);
} else {
wb = new WebcamBroadcaster(values[0], values[1], values[2]);
}
wb.start();
}
public static final int DEFAULT_PORT = 9889;
public static final int DEFAULT_WIDTH = 320;
public static final int DEFAULT_HEIGHT = 240;
private final Object lock = new Object();
private final int width;
private final int height;
private final int port;
private boolean running;
private Player player;
private FrameGrabbingControl control;
private boolean stopping;
private Worker worker;
public WebcamBroadcaster(int width, int height, int port) {
this.width = width;
this.height = height;
this.port = port;
}
public WebcamBroadcaster(int width, int height) {
this(width, height, DEFAULT_PORT);
}
public WebcamBroadcaster(int port) {
this(DEFAULT_WIDTH, DEFAULT_HEIGHT, port);
}
public WebcamBroadcaster() {
this(DEFAULT_WIDTH, DEFAULT_HEIGHT, DEFAULT_PORT);
}
public void start() {
synchronized (lock) {
if (running)
return;
player = createPlayer(width, height);
if (player == null) {
//**THIS IS THE MAIN PROBLEM**
System.err.println("Unable to find a suitable player");
return;
}
System.out.println("Starting the player");
player.start();
control = (FrameGrabbingControl) player
.getControl("javax.media.control.FrameGrabbingControl");
worker = new Worker();
worker.start();
System.out.println("Grabbing frames");
running = true;
}
}
public void stop() throws InterruptedException {
synchronized (lock) {
if (!running)
return;
if (player != null) {
control = null;
player.stop();
player = null;
}
stopping = true;
running = false;
worker = null;
}
try {
worker.join();
} finally {
stopping = false;
}
}
private class Worker extends Thread {
private final int[] data = new int[width * height];
@Override
public void run() {
ServerSocket ss;
try {
ss = new ServerSocket(port);
} catch (IOException e) {
e.printStackTrace();
return;
}
while (true) {
FrameGrabbingControl c;
synchronized (lock) {
if (stopping)
break;
c = control;
}
Socket socket = null;
try {
socket = ss.accept();
Buffer buffer = c.grabFrame();
BufferToImage btoi = new BufferToImage(
(VideoFormat) buffer.getFormat());
BufferedImage image = (BufferedImage) btoi
.createImage(buffer);
if (image != null) {
OutputStream out = socket.getOutputStream();
if (RAW) {
image.getWritableTile(0, 0).getDataElements(0, 0,
width, height, data);
image.releaseWritableTile(0, 0);
DataOutputStream dout = new DataOutputStream(
new BufferedOutputStream(out));
for (int i = 0; i < data.length; i++) {
dout.writeInt(data[i]);
}
dout.close();
} else {
ImageIO.write(image, "JPEG", out);
}
}
socket.close();
socket = null;
} catch (IOException e) {
e.printStackTrace();
} finally {
if (socket != null)
try {
socket.close();
} catch (IOException e) {
/* ignore */
}
}
}
try {
ss.close();
} catch (IOException e) {
/* ignore */
}
}
}
}