基于安卓,实现同步两个摄像头采集到的视频帧
时间: 2024-03-23 21:37:22 浏览: 107
可以通过使用Camera API或Camera2 API来实现同步两个摄像头采集到的视频帧。首先,需要打开两个摄像头并设置它们的参数,例如分辨率、帧率等。然后,可以使用Camera API或Camera2 API中的CaptureRequest来同时捕获两个摄像头的视频帧,并将它们合并成一个视频流。
具体实现步骤如下:
1. 打开两个摄像头并设置它们的参数:
```java
CameraManager cameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
CameraCharacteristics cameraCharacteristics1 = cameraManager.getCameraCharacteristics("0");
CameraCharacteristics cameraCharacteristics2 = cameraManager.getCameraCharacteristics("1");
Size[] sizes1 = cameraCharacteristics1.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP).getOutputSizes(ImageFormat.YUV_420_888);
Size[] sizes2 = cameraCharacteristics2.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP).getOutputSizes(ImageFormat.YUV_420_888);
int width = sizes1[0].getWidth();
int height = sizes1[0].getHeight();
camera1 = Camera.open(0);
Camera.Parameters parameters1 = camera1.getParameters();
parameters1.setPreviewSize(width, height);
camera1.setParameters(parameters1);
camera2 = Camera.open(1);
Camera.Parameters parameters2 = camera2.getParameters();
parameters2.setPreviewSize(width, height);
camera2.setParameters(parameters2);
```
2. 创建CameraCaptureSession并设置它的输出Surface:
```java
SurfaceTexture surfaceTexture = new SurfaceTexture(0);
surfaceTexture.setDefaultBufferSize(width, height);
Surface surface1 = new Surface(surfaceTexture);
Surface surface2 = new Surface(surfaceTexture);
camera1.setPreviewTexture(surfaceTexture);
camera2.setPreviewTexture(surfaceTexture);
camera1.setPreviewCallbackWithBuffer(new Camera.PreviewCallback() {
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
// 处理camera1的视频帧
}
});
camera2.setPreviewCallbackWithBuffer(new Camera.PreviewCallback() {
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
// 处理camera2的视频帧
}
});
camera1.addCallbackBuffer(new byte[width * height * 3 / 2]);
camera2.addCallbackBuffer(new byte[width * height * 3 / 2]);
camera1.startPreview();
camera2.startPreview();
CameraCaptureSession.StateCallback stateCallback = new CameraCaptureSession.StateCallback() {
@Override
public void onConfigured(@NonNull CameraCaptureSession session) {
try {
CaptureRequest.Builder builder = camera1.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
builder.addTarget(surface1);
CaptureRequest request1 = builder.build();
builder = camera2.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
builder.addTarget(surface2);
CaptureRequest request2 = builder.build();
session.setRepeatingRequest(request1, null, null);
session.setRepeatingRequest(request2, null, null);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
@Override
public void onConfigureFailed(@NonNull CameraCaptureSession session) {
session.close();
}
};
camera1.createCaptureSession(Arrays.asList(surface1, surface2), stateCallback, null);
```
以上是一种基于Camera API实现同步采集的方法,Camera2 API的实现方式类似,只是需要使用不同的类和方法。