Some Occasionally Bugs about Camera2 API？
Closed this issue · 3 comments
In the process of using the api，I found some occasionally bugs .Here is my situation. Camera2 api was used in two activitys of my app.
some time twobugs apearing when switching activitys ：
1） CameraDevice.StateCallback.onError(@nonnull CameraDevice cameraDevice, int error) was called （erro=1），But stopBackgroundThread() and closeCamera() are executed already in my activity ’s onStop() method， in addition ，considering “closeCamera（）” is Time-consuming and Asynchronous operation ，I have opened the camera with delay in another activity.
2)some times , it can open camera successfully,but CameraDevice or CaptureSession is null occasionally.
suprisingly，these bugs will dispear when i restart my dev . in a world they are occasionally.
Here is the log:
10-20 16:34:54.342 1055-26088/com.crazymo.ubxtech E/com.crazymo.ubxtech.util.Camera2Helper$3: onErrorubxface -->** Camera ErroCode 1 **
10-20 16:34:55.317 1055-1055/com.crazymo.ubxtech E/com.crazymo.ubxtech.util.Camera2Helper: lockFocusubxface -->** 发送mPreviewRequestBuilder.build(), mCaptureCallback,STATE_WAITING_LOCK **
10-20 16:34:57.214 1055-1055/com.crazymo.ubxtech E/com.crazymo.ubxtech.util.Camera2Helper$4: processubxface -->** 4STATE_PICTURE_TAKEN **
10-20 16:34:57.214 1055-1055/com.crazymo.ubxtech E/com.crazymo.ubxtech.util.Camera2Helper: captureStillPictureubxface -->** mCameraDevice为null **
10-20 16:35:12.331 1055-1055/com.crazymo.ubxtech E/com.crazymo.ubxtech.view.activity.MainActivity: onPausecmo --->## onPause ##
10-20 16:35:12.779 1055-26048/com.crazymo.ubxtech E/BufferQueueProducer: [unnamed-1055-26] dequeueBuffer: BufferQueue has been abandoned
10-20 16:35:12.779 1055-26048/com.crazymo.ubxtech E/mali_so: encounter the first mali_error : 0x0002 : failed to allocate CPU memory (gles_fb_first_drawcall_cb at hardware/arm/maliT760/driver/product/gles/src/fb/mali_gles_fb_module_api.c:1224)
10-20 16:35:12.779 1055-26048/com.crazymo.ubxtech E/mali_so: to dump the call_stack of the first error :
10-20 16:35:12.800 1055-26048/com.crazymo.ubxtech E/CameraDeviceGLThread-0: Received exception on GL render thread:
java.lang.IllegalStateException: glDrawArrays: GLES20 error: 0x505
at android.hardware.camera2.legacy.SurfaceTextureRenderer.checkGlError(SurfaceTextureRenderer.java:537)
at android.hardware.camera2.legacy.SurfaceTextureRenderer.drawFrame(SurfaceTextureRenderer.java:346)
at android.hardware.camera2.legacy.SurfaceTextureRenderer.drawIntoSurfaces(SurfaceTextureRenderer.java:726)
at android.hardware.camera2.legacy.GLThreadManager$1.handleMessage(GLThreadManager.java:105)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:135)
at android.os.HandlerThread.run(HandlerThread.java:61)
10-20 16:35:16.734 1055-26043/com.crazymo.ubxtech E/RequestThread-0: Timed out while waiting for request to complete.
10-20 16:35:16.734 1055-26043/com.crazymo.ubxtech E/CameraDeviceState: Cannot receive result while in state: 0
10-20 16:35:16.737 1055-26043/com.crazymo.ubxtech E/CameraDeviceState: Cannot receive result while in state: 0
10-20 16:35:16.752 1055-1074/com.crazymo.ubxtech E/BufferQueueProducer: [unnamed-1055-28] cancelBuffer: BufferQueue has been abandoned
10-20 16:35:16.757 1055-1535/com.crazymo.ubxtech E/BufferQueueProducer: [unnamed-1055-28] cancelBuffer: BufferQueue has been abandoned
10-20 16:35:17.277 1055-1075/com.crazymo.ubxtech E/CameraManagerGlobal: Camera id 0 has status changed to 0x1
10-20 16:35:17.279 1055-1055/com.crazymo.ubxtech E/com.crazymo.ubxtech.util.Camera2Helper$3: onErrorubxface -->** Camera ErroCode 1 **
10-20 16:43:45.515 1055-1074/com.crazymo.ubxtech E/CameraManagerGlobal: Camera id 0 has status changed to 0x80000000
10-20 16:43:45.906 1055-1055/com.crazymo.ubxtech E/com.crazymo.ubxtech.util.Camera2Helper$3: onOpenedubxface -->** Camera onOpened **
10-20 16:43:48.463 1055-1648/com.crazymo.ubxtech E/com.crazymo.ubxtech.util.Camera2Helper$3: onErrorubxface -->** Camera ErroCode 1 **
10-20 16:43:49.431 1055-1055/com.crazymo.ubxtech E/com.crazymo.ubxtech.view.activity.MainActivity$5: runfaceubx -->** 开启拍照流程 **
10-20 16:43:49.458 1055-1055/com.crazymo.ubxtech E/com.crazymo.ubxtech.view.activity.MainActivity: handleTakePhptoMsgfaceubx -->** 处理拍照请求消息执行takePicture22 **
10-20 16:43:49.458 1055-1055/com.crazymo.ubxtech E/com.crazymo.ubxtech.util.Camera2Helper: lockFocusubxface -->** 发送mPreviewRequestBuilder.build(), mCaptureCallback,STATE_WAITING_LOCK **
10-20 16:43:51.588 1055-1055/com.crazymo.ubxtech E/com.crazymo.ubxtech.util.Camera2Helper$4: processubxface -->** 4STATE_PICTURE_TAKEN **
10-20 16:43:51.588 1055-1055/com.crazymo.ubxtech E/com.crazymo.ubxtech.util.Camera2Helper: captureStillPictureubxface -->** mCameraDevice为null **
10-20 16:46:48.621 1055-1055/com.crazymo.ubxtech E/com.crazymo.ubxtech.BaseActivity: dispatchTouchEventcmo --->## 0 ##
plz help me ,thx. sorry about my poor english.
PS: here is my Camera2 wrapper util .
package com.crazymo.ubxtech.util;
import android.Manifest;
import android.app.Activity;
import android.content.Context;
import android.content.pm.PackageManager;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.ImageFormat;
import android.graphics.Matrix;
import android.graphics.Point;
import android.graphics.RectF;
import android.graphics.SurfaceTexture;
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.CaptureResult;
import android.hardware.camera2.TotalCaptureResult;
import android.hardware.camera2.params.StreamConfigurationMap;
import android.media.Image;
import android.media.ImageReader;
import android.os.Build;
import android.os.Handler;
import android.os.HandlerThread;
import android.support.annotation.NonNull;
import android.support.annotation.RequiresApi;
import android.support.v4.app.ActivityCompat;
import android.util.Size;
import android.util.SparseIntArray;
import android.view.Surface;
import android.view.TextureView;
import android.view.View;
import com.crazymo.ubxtech.view.widget.AutoFitTextureView;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.concurrent.Semaphore;
import java.util.concurrent.TimeUnit;
/**
-
Auther: Crazy.Mo
-
DateTime: 2017/9/12 12:11
-
Summary:
*/
public class Camera2Helper {
private static Activity activity;
private static final SparseIntArray ORIENTATIONS = new SparseIntArray();
private static final int STATE_PREVIEW = 0;
private static final int STATE_WAITING_LOCK = 1;//Camera state: Waiting for the focus to be locked.
private static final int STATE_WAITING_PRECAPTURE = 2;//Camera state: Waiting for the exposure to be pre capture state.
private static final int STATE_WAITING_NON_PRECAPTURE = 3;//Camera state: Waiting for the exposure state to be something other than precapture.
private static final int STATE_PICTURE_TAKEN = 4;//Camera state: Picture was taken.
private static final int MAX_PREVIEW_WIDTH = 1920;//Max preview width that is guaranteed by Camera2 API
private static final int MAX_PREVIEW_HEIGHT = 1080;//Max preview height that is guaranteed by Camera2 API
private static AutoFitTextureView textureView;
private String mCameraId;
private static CameraCaptureSession mCaptureSession;
private static CameraDevice mCameraDevice;
private Size mPreviewSize;
private HandlerThread mBackgroundThread;//An additional thread for running tasks that shouldn't block the UI.
private Handler mBackgroundHandler;//A {@link Handler} for running tasks in the background.
private ImageReader mImageReader;
private static File mFile = null;
private Semaphore mCameraOpenCloseLock = new Semaphore(1);//以防止在关闭相机之前应用程序退出
private boolean mFlashSupported;
private int mSensorOrientation;
private CaptureRequest.Builder mPreviewRequestBuilder;//{@link CaptureRequest.Builder} for the camera preview
private CaptureRequest mPreviewRequest;//{@link CaptureRequest} generated by {@link #mPreviewRequestBuilder}
private int mState = STATE_PREVIEW;//{#see mCaptureCallback}The current state of camera state for taking pictures.
private static CameraManager manager;
private AfterDoListener listener;
private boolean isNeedHideProgressbar=true;//从屏幕旋转转换为JPEG方向
static {
ORIENTATIONS.append(Surface.ROTATION_0, 90);
ORIENTATIONS.append(Surface.ROTATION_90, 0);
ORIENTATIONS.append(Surface.ROTATION_180, 270);
ORIENTATIONS.append(Surface.ROTATION_270, 180);
}//This a callback object for the {@link ImageReader}. "onImageAvailable" will be called when a still image is ready to be saved.
private final ImageReader.OnImageAvailableListener mOnImageAvailableListener = new ImageReader.OnImageAvailableListener() {
@OverRide
public void onImageAvailable(ImageReader reader) {
mBackgroundHandler.post(new Camera2Helper.ImageSaver(reader.acquireNextImage(), mFile));
}
};private final TextureView.SurfaceTextureListener mSurfaceTextureListener = new TextureView.SurfaceTextureListener() {
@Override public void onSurfaceTextureAvailable(SurfaceTexture texture, int width, int height) { //3.在TextureView可用的时候尝试打开摄像头 openCamera(width, height); } @Override public void onSurfaceTextureSizeChanged(SurfaceTexture texture, int width, int height) { configureTransform(width, height); } @Override public boolean onSurfaceTextureDestroyed(SurfaceTexture texture) { return true; } @Override public void onSurfaceTextureUpdated(SurfaceTexture texture) { }};
//实现监听CameraDevice状态回调
private final CameraDevice.StateCallback mStateCallback = new CameraDevice.StateCallback() {@Override public void onOpened(@NonNull CameraDevice cameraDevice) { mCameraOpenCloseLock.release(); mCameraDevice = cameraDevice; LogUtil.showModelLog("ubxface","Camera onOpened "); createCameraPreviewSession();//要想预览、拍照等操作都是需要通过会话来实现，所以创建会话用于预览 } @Override public void onDisconnected(@NonNull CameraDevice cameraDevice) { mCameraOpenCloseLock.release(); cameraDevice.close(); LogUtil.showModelLog("ubxface","Camera onDisconnected "); mCameraDevice = null; } @Override public void onError(@NonNull CameraDevice cameraDevice, int error) { try { mCameraOpenCloseLock.release(); cameraDevice.close(); LogUtil.showModelLog("ubxface", "Camera ErroCode " + error); mCameraDevice = null; }catch (Exception e){ LogUtil.showModelLog("ubxface", "Exception " + e.getMessage().toString()); new Handler().postDelayed(new Runnable() { @Override public void run() { startCameraPreView(); } },1000); } }};
/**
-
A {@link CameraCaptureSession.CaptureCallback} that handles events related to JPEG capture.
*/
private CameraCaptureSession.CaptureCallback mCaptureCallback = new CameraCaptureSession.CaptureCallback() {private void process(CaptureResult result) {
switch (mState) {
case STATE_PREVIEW: {
if(isNeedHideProgressbar) {
listener.onAfterPreviewBack();
isNeedHideProgressbar=false;
}
// We have nothing to do when the camera preview is working normally.
break;
}
case STATE_WAITING_LOCK: {Integer afState = result.get(CaptureResult.CONTROL_AF_STATE); if (afState == null) { captureStillPicture(); } else if (CaptureResult.CONTROL_AF_STATE_FOCUSED_LOCKED == afState ||CaptureResult.CONTROL_AF_STATE_NOT_FOCUSED_LOCKED == afState) { // CONTROL_AE_STATE can be null on some devices Integer aeState = result.get(CaptureResult.CONTROL_AE_STATE); if (aeState == null ||aeState == CaptureResult.CONTROL_AE_STATE_CONVERGED) { mState = STATE_PICTURE_TAKEN; LogUtil.showModelLog("ubxface",mState+"STATE_PICTURE_TAKEN"); captureStillPicture(); } else { runPrecaptureSequence(); } } break; } case STATE_WAITING_PRECAPTURE: { // CONTROL_AE_STATE can be null on some devices Integer aeState = result.get(CaptureResult.CONTROL_AE_STATE); if (aeState == null || aeState == CaptureResult.CONTROL_AE_STATE_PRECAPTURE || aeState == CaptureRequest.CONTROL_AE_STATE_FLASH_REQUIRED) { mState = STATE_WAITING_NON_PRECAPTURE; } break; } case STATE_WAITING_NON_PRECAPTURE: { // CONTROL_AE_STATE can be null on some devices Integer aeState = result.get(CaptureResult.CONTROL_AE_STATE); if (aeState == null || aeState != CaptureResult.CONTROL_AE_STATE_PRECAPTURE) { mState = STATE_PICTURE_TAKEN; captureStillPicture(); } break; } default: break; }}
@OverRide
public void onCaptureProgressed(@nonnull CameraCaptureSession session,
@nonnull CaptureRequest request,
@nonnull CaptureResult partialResult) {
process(partialResult);
LogUtil.showDebugLog("onCaptureProgressed");
}@OverRide
public void onCaptureCompleted(@nonnull CameraCaptureSession session,
@nonnull CaptureRequest request,
@nonnull TotalCaptureResult result) {
process(result);
}
};
/**
private volatile static Camera2Helper singleton;///注意:用volatile修饰的变量，线程在每次使用变量的时候，都会读取变量修改后的最的值
private Camera2Helper(Activity act, AutoFitTextureView view) {
}private Camera2Helper(Activity act, AutoFitTextureView view, File file) {
activity = act;
textureView = view;
mFile = file;
manager = (CameraManager) activity.getSystemService(Context.CAMERA_SERVICE);
}public static Camera2Helper getInstance(Activity act, AutoFitTextureView view, File file) {
if (singleton == null) {
synchronized (Camera2Helper.class) {
singleton = new Camera2Helper(act, view, file);
}
}
activity=act;
textureView=view;
mFile=file;
return singleton;
}/**
-
开启相机预览界面
*/
public void startCameraPreView() {
startBackgroundThread();
//1、如果TextureView 可用则直接打开相机
new Handler().postDelayed(new Runnable() {@Override public void run() { textureView.setVisibility(View.VISIBLE); if (textureView != null) { if (textureView.isAvailable()) { openCamera(textureView.getWidth(), textureView.getHeight()); } else { textureView.setSurfaceTextureListener(mSurfaceTextureListener);//设置TextureView 的回调后，当满足之后自动回调到 } } }},550);//建议加上尤其是你需要在多个界面都要开启预览界面时候
}
public void startCameraPreView(long delay) {
new Handler().postDelayed(new Runnable() { @Override public void run() { startBackgroundThread(); textureView.setVisibility(View.VISIBLE); if (textureView != null) { if (textureView.isAvailable()) { openCamera(textureView.getWidth(), textureView.getHeight()); } else { textureView.setSurfaceTextureListener(mSurfaceTextureListener);//设置TextureView 的回调后，当满足之后自动回调到 } } } },delay);//建议加上尤其是你需要在多个界面都要开启预览界面时候}
/**
- 开启HandlerThread
*/
private void startBackgroundThread() {
mBackgroundThread = new HandlerThread("CameraBackground");
mBackgroundThread.start();
mBackgroundHandler = new Handler(mBackgroundThread.getLooper());
}
/**
- Stops the background thread and its {@link Handler}.
*/
private void stopBackgroundThread() {
if (mBackgroundThread == null) {
return;
}
mBackgroundThread.quitSafely();
try {
mBackgroundThread.join();
mBackgroundThread = null;
mBackgroundHandler = null;
} catch (InterruptedException e) {
e.printStackTrace();
}
}
/**
- 拍照
*/
public void takePicture() {
lockFocus();
}
/**
-
通过会话提交捕获图像的请求，通常在捕获回调回应后调用
*/
private void captureStillPicture() {
try {
if (null == mCameraDevice) {
LogUtil.showModelLog("ubxface","mCameraDevice为null");
return;
}
//创建用于拍照的CaptureRequest.Builder
final CaptureRequest.Builder captureBuilder = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
captureBuilder.addTarget(mImageReader.getSurface());// 使用和预览一样的模式 AE and AF captureBuilder.set(CaptureRequest.CONTROL_AF_MODE, CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE); setAutoFlash(captureBuilder); int rotation = activity.getWindowManager().getDefaultDisplay().getRotation(); captureBuilder.set(CaptureRequest.JPEG_ORIENTATION, getOrientation(rotation)); CameraCaptureSession.CaptureCallback CaptureCallback = new CameraCaptureSession.CaptureCallback() { @Override public void onCaptureCompleted(@NonNull CameraCaptureSession session, @NonNull CaptureRequest request, @NonNull TotalCaptureResult result) { unlockFocus(); if(listener!=null) { listener.onAfterTakePicture(); }else{ LogUtil.showErroLog("AfterDoListener 为null"); } LogUtil.showErroLog("onCaptureCompleted" + "保存照片成功"); } }; mCaptureSession.stopRepeating(); mCaptureSession.capture(captureBuilder.build(), CaptureCallback, null);} catch (CameraAccessException e) {
LogUtil.showModelLog("ubxface","CameraAccessException"+e.getMessage().toString());
}
}
/**
-
Lock the focus as the first step for a still image capture.
*/
private void lockFocus() {
try {
if (mCaptureSession == null) {
LogUtil.showModelLog("ubxface","mCaptureSession 为null");return; } // This is how to tell the camera to lock focus. mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_START); // Tell #mCaptureCallback to wait for the lock. mState = STATE_WAITING_LOCK; LogUtil.showModelLog("ubxface","发送mPreviewRequestBuilder.build(), mCaptureCallback,"+"STATE_WAITING_LOCK"); mCaptureSession.capture(mPreviewRequestBuilder.build(), mCaptureCallback, mBackgroundHandler);} catch (CameraAccessException e) {
LogUtil.showModelLog("ubxface",e.getMessage().toString()+"");
e.printStackTrace();
}
}
/**
- Unlock the focus. This method should be called when still image capture sequence is
- finished.
*/
private void unlockFocus() {
try {
// Reset the auto-focus trigger
if (mCaptureSession == null) {
return;
}
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_CANCEL);
setAutoFlash(mPreviewRequestBuilder);
mCaptureSession.capture(mPreviewRequestBuilder.build(), mCaptureCallback, mBackgroundHandler);
// After this, the camera will go back to the normal state of preview，重新预览
mState = STATE_PREVIEW;
mCaptureSession.setRepeatingRequest(mPreviewRequest, mCaptureCallback, mBackgroundHandler);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
/**
- 设置自动闪光灯
- @param requestBuilder
*/
private void setAutoFlash(CaptureRequest.Builder requestBuilder) {
if (mFlashSupported) {
requestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);
}
}
/**
- 从指定的屏幕旋转中检索JPEG方向。
- @param rotation The screen rotation.
- @return The JPEG orientation (one of 0, 90, 270, and 360)
*/
private int getOrientation(int rotation) {
// Sensor orientation is 90 for most devices, or 270 for some devices (eg. Nexus 5X)
// We have to take that into account and rotate JPEG properly.
// For devices with orientation of 90, we simply return our mapping from ORIENTATIONS.
// For devices with orientation of 270, we need to rotate the JPEG 180 degrees.
return (ORIENTATIONS.get(rotation) + mSensorOrientation + 270) % 360;
}
/**
- Run the precapture sequence for capturing a still image. This method should be called when
- we get a response in {@link #mCaptureCallback} from {@link #lockFocus()}
*/
private void runPrecaptureSequence() {
try {
// This is how to tell the camera to trigger.
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER, CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER_START);
// Tell #mCaptureCallback to wait for the precapture sequence to be set.
mState = STATE_WAITING_PRECAPTURE;
mCaptureSession.capture(mPreviewRequestBuilder.build(), mCaptureCallback, mBackgroundHandler);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
private void createCameraPreviewSession() {
try {
SurfaceTexture texture = textureView.getSurfaceTexture();
assert texture != null;
// 将默认缓冲区的大小配置为我们想要的相机预览的大小。
texture.setDefaultBufferSize(mPreviewSize.getWidth(), mPreviewSize.getHeight());
// This is the output Surface we need to start preview.
Surface surface = new Surface(texture);
// set up a CaptureRequest.Builder with the output Surface.
mPreviewRequestBuilder = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
mPreviewRequestBuilder.addTarget(surface);// 把显示预览界面的TextureView添加到到CaptureRequest.Builder中
// create a CameraCaptureSession for camera preview.
mCameraDevice.createCaptureSession(Arrays.asList(surface, mImageReader.getSurface()), new CameraCaptureSession.StateCallback() {@Override public void onConfigured(@NonNull CameraCaptureSession cameraCaptureSession) { // The camera is already closed if (null == mCameraDevice) { return; } // When the session is ready, we start displaying the preview. mCaptureSession = cameraCaptureSession; try { // 设置自动对焦参数并把参数设置到CaptureRequest.Builder中 mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_MODE, CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE); //设置闪光灯自动模式 setAutoFlash(mPreviewRequestBuilder); // 封装好CaptureRequest.Builder后，调用build 创建封装好CaptureRequest 并发送请求 mPreviewRequest = mPreviewRequestBuilder.build(); mCaptureSession.setRepeatingRequest(mPreviewRequest, mCaptureCallback, mBackgroundHandler); } catch (CameraAccessException e) { e.printStackTrace(); } } @Override public void onConfigureFailed(@NonNull CameraCaptureSession cameraCaptureSession) { LogUtil.showModelLog("faceubx","CameraCaptureSession.StateCallback配置失败"); } }, null); } catch (CameraAccessException e) { e.printStackTrace(); }}
private void setUpCameraOutputs(int width, int height) {
try { for (String cameraId : manager.getCameraIdList()) { CameraCharacteristics characteristics = manager.getCameraCharacteristics(cameraId); /*Integer facing = characteristics.get(CameraCharacteristics.LENS_FACING); //前置摄像头 if (facing != null && facing == CameraCharacteristics.LENS_FACING_FRONT) { continue; }else if(facing != null && facing == CameraCharacteristics.LENS_FACING_BACK){ continue; }*/ StreamConfigurationMap map = characteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP); if (map == null) { continue; } // For still image captures, we use the largest available size. Size largest = Collections.max(Arrays.asList(map.getOutputSizes(ImageFormat.JPEG)), new Camera2Helper.CompareSizesByArea()); mImageReader = ImageReader.newInstance(largest.getWidth(), largest.getHeight(), ImageFormat.JPEG, /*maxImages*/2);//初始化ImageReader mImageReader.setOnImageAvailableListener(mOnImageAvailableListener, mBackgroundHandler);//设置ImageReader监听 //处理图片方向相关 int displayRotation = activity.getWindowManager().getDefaultDisplay().getRotation(); mSensorOrientation = characteristics.get(CameraCharacteristics.SENSOR_ORIENTATION); boolean swappedDimensions = false; switch (displayRotation) { case Surface.ROTATION_0: case Surface.ROTATION_180: if (mSensorOrientation == 90 || mSensorOrientation == 270) { swappedDimensions = true; } break; case Surface.ROTATION_90: case Surface.ROTATION_270: if (mSensorOrientation == 0 || mSensorOrientation == 180) { swappedDimensions = true; } break; default: break; } Point displaySize = new Point(); activity.getWindowManager().getDefaultDisplay().getSize(displaySize); int rotatedPreviewWidth = width; int rotatedPreviewHeight = height; int maxPreviewWidth = displaySize.x; int maxPreviewHeight = displaySize.y; if (swappedDimensions) { rotatedPreviewWidth = height; rotatedPreviewHeight = width; maxPreviewWidth = displaySize.y; maxPreviewHeight = displaySize.x; } if (maxPreviewWidth > MAX_PREVIEW_WIDTH) { maxPreviewWidth = MAX_PREVIEW_WIDTH; } if (maxPreviewHeight > MAX_PREVIEW_HEIGHT) { maxPreviewHeight = MAX_PREVIEW_HEIGHT; } // Danger, W.R.! Attempting to use too large a preview size could exceed the camera // bus' bandwidth limitation, resulting in gorgeous previews but the storage of // garbage capture data. mPreviewSize = chooseOptimalSize(map.getOutputSizes(SurfaceTexture.class), rotatedPreviewWidth, rotatedPreviewHeight, maxPreviewWidth, maxPreviewHeight, largest); // We fit the aspect ratio of TextureView to the size of preview we picked. int orientation = activity.getResources().getConfiguration().orientation; if (orientation == Configuration.ORIENTATION_LANDSCAPE) { textureView.setAspectRatio(mPreviewSize.getWidth(), mPreviewSize.getHeight()); } else { textureView.setAspectRatio(mPreviewSize.getHeight(), mPreviewSize.getWidth()); } // 设置是否支持闪光灯 Boolean available = characteristics.get(CameraCharacteristics.FLASH_INFO_AVAILABLE); mFlashSupported = available == null ? false : available; mCameraId = cameraId; return; } } catch (CameraAccessException e) { e.printStackTrace(); } catch (NullPointerException e) { }}
/**
-
为了避免太大的预览大小会超过相机总线的带宽限
*/
private static Size chooseOptimalSize(Size[] choices, int textureViewWidth, int textureViewHeight, int maxWidth, int maxHeight, Size aspectRatio) {// Collect the supported resolutions that are at least as big as the preview Surface
List bigEnough = new ArrayList<>();
// Collect the supported resolutions that are smaller than the preview Surface
List notBigEnough = new ArrayList<>();
int w = aspectRatio.getWidth();
int h = aspectRatio.getHeight();
for (Size option : choices) {
if (option.getWidth() <= maxWidth && option.getHeight() <= maxHeight && option.getHeight() == option.getWidth() * h / w) {
if (option.getWidth() >= textureViewWidth && option.getHeight() >= textureViewHeight) {
bigEnough.add(option);
} else {
notBigEnough.add(option);
}
}
}
if (bigEnough.size() > 0) {
return Collections.min(bigEnough, new Camera2Helper.CompareSizesByArea());
} else if (notBigEnough.size() > 0) {
return Collections.max(notBigEnough, new Camera2Helper.CompareSizesByArea());
} else {
return choices[0];
}
}
/**
-
打开指定摄像头
*/
private void openCamera(int width, int height) {//4、设置参数
setUpCameraOutputs(width, height);
configureTransform(width, height);
try {
if (!mCameraOpenCloseLock.tryAcquire(2500, TimeUnit.MILLISECONDS)) {
throw new RuntimeException("Time out waiting to lock camera opening.");
}
if (ActivityCompat.checkSelfPermission(activity, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
return;
}
manager.openCamera(mCameraId, mStateCallback, mBackgroundHandler);
} catch (CameraAccessException e) {
LogUtil.showModelLog("ubxface",e.getMessage().toString());
e.printStackTrace();
} catch (InterruptedException e) {
throw new RuntimeException("Interrupted while trying to lock camera opening.", e);
}
}
/**
- Closes the current {@link CameraDevice}.
*/
private void closeCamera() {
try {
mCameraOpenCloseLock.acquire();
if (null != mCaptureSession) {
mCaptureSession.close();
mCaptureSession = null;
}
if (null != mCameraDevice) {
mCameraDevice.close();
mCameraDevice = null;
}
if (null != mImageReader) {
mImageReader.close();
mImageReader = null;
}
} catch (InterruptedException e) {
throw new RuntimeException("Interrupted while trying to lock camera closing.", e);
} finally {
mCameraOpenCloseLock.release();
}
}
/**
-
Configures the necessary {@link android.graphics.Matrix} transformation to
textureView. -
This method should be called after the camera preview size is determined in
-
setUpCameraOutputs and also the size of
textureViewis fixed. -
@param viewWidth The width of
textureView -
@param viewHeight The height of
textureView
*/
private void configureTransform(int viewWidth, int viewHeight) {if (null == textureView || null == mPreviewSize) {
return;
}
int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, mPreviewSize.getHeight(), mPreviewSize.getWidth());
float centerX = viewRect.centerX();
float centerY = viewRect.centerY();
if (Surface.ROTATION_90 == rotation || Surface.ROTATION_270 == rotation) {
bufferRect.offset(centerX - bufferRect.centerX(), centerY - bufferRect.centerY());
matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
float scale = Math.max(
(float) viewHeight / mPreviewSize.getHeight(),
(float) viewWidth / mPreviewSize.getWidth());
matrix.postScale(scale, scale, centerX, centerY);
matrix.postRotate(90 * (rotation - 2), centerX, centerY);
} else if (Surface.ROTATION_180 == rotation) {
matrix.postRotate(180, centerX, centerY);
}
textureView.setTransform(matrix);
}
/**
- 释放Act和View
*/
public void onStopHelper() {
stopBackgroundThread();
closeCamera();
}
public void onDestoryHelper(){
activity = null;
textureView = null;
listener=null;
}private static class CompareSizesByArea implements Comparator {
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP) @Override public int compare(Size lhs, Size rhs) { // We cast here to ensure the multiplications won't overflow return Long.signum((long) lhs.getWidth() * lhs.getHeight() - (long) rhs.getWidth() * rhs.getHeight()); }}
private static class ImageSaver implements Runnable {
private final Image mImage; private final File mFile; public ImageSaver(Image image, File file) { mImage = image; mFile = file; } @Override public void run() { ByteBuffer buffer = mImage.getPlanes()[0].getBuffer(); byte[] bytes = new byte[buffer.remaining()]; FileOutputStream output = null; buffer.get(bytes); try { Bitmap bitmap = BitmapUtil.bytes2Bitmap(bytes);//原始的转为Bitmap Bitmap bitmapAfter = BitmapUtil.compressBitmapBySampleSize(bitmap, 4);//压缩 byte[] bytesAfter = BitmapUtil.bitmap2Bytes(bitmapAfter);//压缩后的Bitmap 转为Bytes output = new FileOutputStream(mFile); output.write(bytesAfter);//写到文件输出流 } catch (IOException e) { LogUtil.showErroLog(e.getMessage().toString()); e.printStackTrace(); } finally { mImage.close(); if (null != output) { try { output.close(); } catch (IOException e) { e.printStackTrace(); } } } }}
public void setAfterDoListener(AfterDoListener listener){
this.listener=listener;
}public interface AfterDoListener {
void onAfterPreviewBack();
void onAfterCaptrue(ByteBuffer byteBuffer);//发送拍照请求之后，当摄像头捕获到照片的数据（即照片的原始ByteBuffer数据）
void onAfterTakePicture();
}
} -
Hi CrazyMo
Even I am facing same problem. Did u figure out any solution for this ?
Any update on this?
This sample has been migrated to a new location where we can accept Pull Requests (check README for more information).
As recommended by GitHub, we are closing all issues and pull requests now that this older repo will be archived.
If you still see this issue in the updated repo, please reopen the issue/PR there. Thank you!