版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/lb5761311/article/details/90039794
本文是基于rk3288 usbcamera这篇文章的更新版本，上篇文章 是基于第三方框架UvcCameraDemo开发的。自己想基于Android系统提供的camera2的接口开发。
由于我们的usb接口不是在主host上，报错如下
02-27 06:36:02.674 2425 2494 E RequestThread-0: Timed out while waiting for request to complete.
02-27 06:36:02.675 2425 2494 W RequestHolder: Capture failed for request: 0
有一个摄像头stream on操作失败了。
E/CameraHal: cameraStream(531): cameraStream(531): VIDIOC_STREAMON Failed
[ 91.735262] INFO:: dwc_otg_hcd_do_reserve: Insufficient periodic bandwidth for periodic transfer.
[ 91.735262]
[ 91.735331] ERROR::dwc_otg_hcd_urb_enqueue:570: Enqueue failed adding QTD status -28
[ 91.735331]
[ 91.735378] uvcvideo: Failed to submit URB 0 (-28).
经过与rk 官方沟通，修改以下代码可以支持
@@ -216,8 +216,9 @@ static int uvc_get_video_ctrl(struct uvc_streaming *stream,
ctrl->wDelay = le16_to_cpup((__le16 *)&data[16]);
ctrl->dwMaxVideoFrameSize = get_unaligned_le32(&data[18]);
ctrl->dwMaxPayloadTransferSize = get_unaligned_le32(&data[22]);
-
- if (size == 34) {
+ if(ctrl->dwMaxPayloadTransferSize > 0x200){
+ ctrl->dwMaxPayloadTransferSize = 0x200;
+ }if (size == 34) {
ctrl->dwClockFrequency = get_unaligned_le32(&data[26]);
ctrl->bmFramingInfo = data[30];
ctrl->bPreferedVersion = data[31];
应用相关代码如下：
package com.deepblueai.functiontest.camera;
import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraCaptureSession;
import android.hardware.camera2.CameraCharacteristics;
import android.hardware.camera2.CameraDevice;
import android.hardware.camera2.CameraManager;
import android.hardware.camera2.CameraMetadata;
import android.hardware.camera2.CaptureRequest;
import android.hardware.camera2.params.StreamConfigurationMap;
import android.os.Handler;
import android.os.HandlerThread;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.util.Range;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import com.deepblueai.functiontest.R;
import java.util.Arrays;
import java.util.Collections;
public class CameraActivity extends AppCompatActivity {
private final String TAG = "CameraActivity";
SurfaceView mCamera0, mCamera1, mCamera2, mCamera3;
private SurfaceHolder mCam0_SurfaceHolder, mCam1_SurfaceHolder, mCam2_SurfaceHolder, mCam3_SurfaceHolder;
private CameraManager mCameraManager;//摄像头管理器
private CameraCaptureSession mCameraCaptureSession;
private CameraDevice mCameraDevice;
TextView mTextViewNumsCamera;
private static int nums_camera = 0;
private Button btexit;
private HandlerThread mCameraThread0 ,mCameraThread1;
private Handler mCameraHandler0 ,mCameraHandler1;
private CameraCharacteristics mCameraCharacteristics;
private Range<Integer>[] fpsRanges;
private Range<Integer> fpsRange1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_camera);
fpsRange1 = Range.create(5, 8);
initCameraActivity();
}
private void initCameraActivity(){
mCameraManager = (CameraManager) this.getSystemService(Context.CAMERA_SERVICE);
mCameraThread0 = new HandlerThread("mCameraThread0");
mCameraThread0.start();
mCameraHandler0 = new Handler(mCameraThread0.getLooper());
mCameraThread1 = new HandlerThread("mCameraThread1");
mCameraThread1.start();
mCameraHandler1 = new Handler(mCameraThread1.getLooper());
try {
nums_camera = mCameraManager.getCameraIdList().length;
Log.d(TAG, "The number of camera is " + nums_camera);
} catch (CameraAccessException e) {
e.printStackTrace();
} catch (NullPointerException e) {
}
mTextViewNumsCamera = (TextView)findViewById(R.id.nums_cammera);
mTextViewNumsCamera.setText(""+nums_camera);
btexit = (Button) findViewById(R.id.exit);
btexit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
System.exit(1);
}
});
mCamera0 = (SurfaceView)findViewById(R.id.surface_view_camera0);
mCam0_SurfaceHolder = mCamera0.getHolder();
mCam0_SurfaceHolder.setKeepScreenOn(true);
mCam0_SurfaceHolder.addCallback(new SurfaceHolder.Callback() {
@Override
public void surfaceCreated(SurfaceHolder surfaceHolder) {
setupCamera0("0");
}
@Override
public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) {
}
@Override
public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
}
});
if(nums_camera <= 0) mCamera0.setVisibility(View.GONE);
//
// mCamera2 = (SurfaceView)findViewById(R.id.surface_view_camera2);
// mCam2_SurfaceHolder = mCamera2.getHolder();
// mCam2_SurfaceHolder.setKeepScreenOn(true);
// mCam2_SurfaceHolder.addCallback(new SurfaceHolder.Callback() {
// @Override
// public void surfaceCreated(SurfaceHolder surfaceHolder) {
// setupCamera2("2");
// }
//
// @Override
// public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) {
//
// }
//
// @Override
// public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
// surfaceHolder = null;
// }
// });
// mCamera3 = (SurfaceView)findViewById(R.id.surface_view_camera3);
// mCam3_SurfaceHolder = mCamera3.getHolder();
// mCam3_SurfaceHolder.setKeepScreenOn(true);
// mCam3_SurfaceHolder.addCallback(new SurfaceHolder.Callback() {
// @Override
// public void surfaceCreated(SurfaceHolder surfaceHolder) {
// setupCamera3("3");
// }
//
// @Override
// public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) {
//
// }
//
// @Override
// public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
// surfaceHolder = null;
// }
// });
mCamera1 = (SurfaceView)findViewById(R.id.surface_view_camera1);
mCam1_SurfaceHolder = mCamera1.getHolder();
mCam1_SurfaceHolder.setKeepScreenOn(true);
mCam1_SurfaceHolder.addCallback(new SurfaceHolder.Callback() {
@Override
public void surfaceCreated(SurfaceHolder surfaceHolder) {
setupCamera1("1");
}
@Override
public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) {
}
@Override
public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
surfaceHolder = null;
}
});
}
private void takePreview0(SurfaceHolder surfaceHolder) {
Log.d(TAG, "takePreview2...");
try {
// 创建预览需要的CaptureRequest.Builder
final CaptureRequest.Builder previewRequestBuilder = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
// 将SurfaceView的surface作为CaptureRequest.Builder的目标
previewRequestBuilder.addTarget(surfaceHolder.getSurface());
// previewRequestBuilder.set(CaptureRequest.CONTROL_AE_TARGET_FPS_RANGE, fpsRange1);
Log.e(TAG,"fpsRange1-----" + fpsRange1);
// 创建CameraCaptureSession，该对象负责管理处理预览请求和拍照请求
mCameraDevice.createCaptureSession(Arrays.asList(surfaceHolder.getSurface()), new CameraCaptureSession.StateCallback() // ③
{
@Override
public void onConfigured(CameraCaptureSession cameraCaptureSession) {
if (null == mCameraDevice) return;
// 当摄像头已经准备好时，开始显示预览
mCameraCaptureSession = cameraCaptureSession;
try {
previewRequestBuilder.set(CaptureRequest.CONTROL_MODE, CameraMetadata.CONTROL_MODE_AUTO);
//previewRequestBuilder.set(CaptureRequest.CONTROL_AE_TARGET_FPS_RANGE, fpsRange1);
CaptureRequest previewRequest = previewRequestBuilder.build();
mCameraCaptureSession.setRepeatingRequest(previewRequest, null, mCameraHandler0);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
@Override
public void onConfigureFailed(CameraCaptureSession cameraCaptureSession) {
Log.e(TAG, "config camera Error!!!");
}
}, mCameraHandler0);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
private void takePreview1(SurfaceHolder surfaceHolder) {
Log.d(TAG, "takePreview1...");
try {
// 创建预览需要的CaptureRequest.Builder
Log.d(TAG, "takePreview2...");
final CaptureRequest.Builder previewRequestBuilder = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
// 将SurfaceView的surface作为CaptureRequest.Builder的目标
previewRequestBuilder.addTarget(surfaceHolder.getSurface());
// previewRequestBuilder.set(CaptureRequest.CONTROL_AE_TARGET_FPS_RANGE, fpsRange1);
// 创建CameraCaptureSession，该对象负责管理处理预览请求和拍照请求
mCameraDevice.createCaptureSession(Collections.singletonList(surfaceHolder.getSurface()), new CameraCaptureSession.StateCallback() // ③
{
@Override
public void onConfigured(CameraCaptureSession cameraCaptureSession) {
Log.d(TAG, "takePreview3...");
if (null == mCameraDevice) return;
// 当摄像头已经准备好时，开始显示预览
mCameraCaptureSession = cameraCaptureSession;
try {
Log.d(TAG, "takePreview4...");
CaptureRequest previewRequest = previewRequestBuilder.build();
previewRequestBuilder.set(CaptureRequest.CONTROL_MODE, CameraMetadata.CONTROL_MODE_AUTO);
// previewRequestBuilder.set(CaptureRequest.CONTROL_AE_TARGET_FPS_RANGE, fpsRange1);
mCameraCaptureSession.setRepeatingRequest(previewRequest, null, mCameraHandler1);
Log.d(TAG, "takePreview5...");
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
@Override
public void onConfigureFailed(CameraCaptureSession cameraCaptureSession) {
Log.e(TAG, "config camera Error!!!");
}
}, mCameraHandler1);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
private void setupCamera0(String cameraId) {
//获取摄像头管理
mCameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
// try {
// mCameraCharacteristics = mCameraManager.getCameraCharacteristics(cameraId);
// fpsRanges =
// mCameraCharacteristics.get(CameraCharacteristics.CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES);
// Log.e(TAG,"fpsRanges" + Arrays.toString(fpsRanges) );
//
// }catch (CameraAccessException e){
// e.printStackTrace();
// }
try {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
//申请WRITE_EXTERNAL_STORAGE权限
Log.e(TAG, "No camera permission!!!");
return;
} else {
//打开摄像头
mCameraManager.openCamera(cameraId, new CameraDevice.StateCallback() {
@Override
public void onOpened(CameraDevice camera) {//打开摄像头
mCameraDevice = camera;
Log.d(TAG, "camera.getId()=" + camera.getId());
SurfaceHolder surfaceHolder = null;
//开启预览
if (camera.getId() == "0") {
surfaceHolder = mCam0_SurfaceHolder;
takePreview0(surfaceHolder);
}
}
@Override
public void onDisconnected(CameraDevice camera) {//关闭摄像头
camera.close();
if (null != mCameraDevice) {
mCameraDevice = null;
}
}
@Override
public void onError(CameraDevice camera, int error) {//发生错误
camera.close();
Log.e(TAG, "CameraDevice.StateCallback() onError! error=" + error);
}
}, null);
}
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
private void setupCamera1(String cameraId) {
//获取摄像头管理
mCameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
// try {
// mCameraCharacteristics = mCameraManager.getCameraCharacteristics(cameraId);
// Range<Integer>[] fpsRanges =
// mCameraCharacteristics.get(CameraCharacteristics.CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES);
// Log.e(TAG,"fpsRanges" + Arrays.toString(fpsRanges));
// }catch (CameraAccessException e){
// e.printStackTrace();
// }
try {
Log.e(TAG,"---------------------1");
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
//申请WRITE_EXTERNAL_STORAGE权限
Log.e(TAG, "No camera permission!!!");
return;
} else {
//打开摄像头
mCameraManager.openCamera(cameraId, new CameraDevice.StateCallback() {
@Override
public void onOpened(CameraDevice camera) {//打开摄像头
mCameraDevice = camera;
Log.d(TAG, "camera.getId()=" + camera.getId());
SurfaceHolder surfaceHolder = null;
//开启预览
if(camera.getId() == "0") {
surfaceHolder = mCam0_SurfaceHolder;
} else if(camera.getId() == "1") {
surfaceHolder = mCam1_SurfaceHolder;
}else if(camera.getId() == "2") {
surfaceHolder = mCam2_SurfaceHolder;
}else if(camera.getId() == "3") {
surfaceHolder = mCam3_SurfaceHolder;
}
Log.e(TAG,"---------------------2");
if(surfaceHolder != null) {
Log.e(TAG,"---------------------3");
takePreview1(surfaceHolder);
}
}
@Override
public void onDisconnected(CameraDevice camera) {//关闭摄像头
camera.close();
if (null != mCameraDevice) {
mCameraDevice = null;
}
}
@Override
public void onError(CameraDevice camera, int error) {//发生错误
camera.close();
Log.e(TAG, "CameraDevice.StateCallback() onError! error=" + error);
}
}, null);
}
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
private void setupCamera2(String cameraId) {
//获取摄像头管理
mCameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
// try {
// mCameraCharacteristics = mCameraManager.getCameraCharacteristics(cameraId);
// Range<Integer>[] fpsRanges =
// mCameraCharacteristics.get(CameraCharacteristics.CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES);
// Log.e(TAG,"fpsRanges" + Arrays.toString(fpsRanges));
// }catch (CameraAccessException e){
// e.printStackTrace();
// }
try {
Log.e(TAG,"---------------------1");
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
//申请WRITE_EXTERNAL_STORAGE权限
Log.e(TAG, "No camera permission!!!");
return;
} else {
//打开摄像头
mCameraManager.openCamera(cameraId, new CameraDevice.StateCallback() {
@Override
public void onOpened(CameraDevice camera) {//打开摄像头
mCameraDevice = camera;
Log.d(TAG, "camera.getId()=" + camera.getId());
SurfaceHolder surfaceHolder = null;
//开启预览
if(camera.getId() == "0") {
surfaceHolder = mCam0_SurfaceHolder;
} else if(camera.getId() == "1") {
surfaceHolder = mCam1_SurfaceHolder;
}else if(camera.getId() == "2") {
surfaceHolder = mCam2_SurfaceHolder;
}else if(camera.getId() == "3") {
surfaceHolder = mCam3_SurfaceHolder;
}
Log.e(TAG,"---------------------2");
if(surfaceHolder != null) {
Log.e(TAG,"---------------------3");
takePreview1(surfaceHolder);
}
}
@Override
public void onDisconnected(CameraDevice camera) {//关闭摄像头
camera.close();
if (null != mCameraDevice) {
mCameraDevice = null;
}
}
@Override
public void onError(CameraDevice camera, int error) {//发生错误
camera.close();
Log.e(TAG, "CameraDevice.StateCallback() onError! error=" + error);
}
}, null);
}
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
private void setupCamera3(String cameraId) {
//获取摄像头管理
mCameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
// try {
// mCameraCharacteristics = mCameraManager.getCameraCharacteristics(cameraId);
// Range<Integer>[] fpsRanges =
// mCameraCharacteristics.get(CameraCharacteristics.CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES);
// Log.e(TAG,"fpsRanges" + Arrays.toString(fpsRanges));
// }catch (CameraAccessException e){
// e.printStackTrace();
// }
try {
Log.e(TAG,"---------------------1");
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
//申请WRITE_EXTERNAL_STORAGE权限
Log.e(TAG, "No camera permission!!!");
return;
} else {
//打开摄像头
mCameraManager.openCamera(cameraId, new CameraDevice.StateCallback() {
@Override
public void onOpened(CameraDevice camera) {//打开摄像头
mCameraDevice = camera;
Log.d(TAG, "camera.getId()=" + camera.getId());
SurfaceHolder surfaceHolder = null;
//开启预览
if(camera.getId() == "0") {
surfaceHolder = mCam0_SurfaceHolder;
} else if(camera.getId() == "1") {
surfaceHolder = mCam1_SurfaceHolder;
}else if(camera.getId() == "2") {
surfaceHolder = mCam2_SurfaceHolder;
}else if(camera.getId() == "3") {
surfaceHolder = mCam3_SurfaceHolder;
}
Log.e(TAG,"---------------------2");
if(surfaceHolder != null) {
Log.e(TAG,"---------------------3");
takePreview1(surfaceHolder);
}
}
@Override
public void onDisconnected(CameraDevice camera) {//关闭摄像头
camera.close();
if (null != mCameraDevice) {
mCameraDevice = null;
}
}
@Override
public void onError(CameraDevice camera, int error) {//发生错误
camera.close();
Log.e(TAG, "CameraDevice.StateCallback() onError! error=" + error);
}
}, null);
}
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
@Override
protected void onResume() {
super.onResume();
}
@Override
protected void onDestroy() {
super.onDestroy();
if(mCameraDevice != null) {
mCameraDevice.close();
mCameraDevice = null;
}
}
}