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package com.flurgle.camerakit; |
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import android.graphics.YuvImage; |
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import android.hardware.Camera; |
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import android.media.CamcorderProfile; |
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import android.media.MediaRecorder; |
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import android.os.Build; |
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import android.support.annotation.NonNull; |
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import android.support.v4.util.SparseArrayCompat; |
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import android.view.SurfaceHolder; |
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import java.io.File; |
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import java.io.IOException; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.SortedSet; |
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import java.util.TreeSet; |
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public class Camera2 extends CameraImpl { |
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private static final SparseArrayCompat<String> FLASH_MODES = new SparseArrayCompat<>(); |
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static { |
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FLASH_MODES.put(CameraKit.Constants.FLASH_OFF, Camera.Parameters.FLASH_MODE_OFF); |
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FLASH_MODES.put(CameraKit.Constants.FLASH_ON, Camera.Parameters.FLASH_MODE_ON); |
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FLASH_MODES.put(CameraKit.Constants.FLASH_AUTO, Camera.Parameters.FLASH_MODE_AUTO); |
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} |
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private static final SparseArrayCompat<Integer> FACING_MODES = new SparseArrayCompat<>(); |
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static { |
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FACING_MODES.put(CameraKit.Constants.FACING_BACK, Camera.CameraInfo.CAMERA_FACING_BACK); |
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FACING_MODES.put(CameraKit.Constants.FACING_FRONT, Camera.CameraInfo.CAMERA_FACING_FRONT); |
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} |
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private File mVideoFile; |
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private int mCameraId; |
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private Camera mCamera; |
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private Camera.Parameters mCameraParameters; |
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private final Camera.CameraInfo mCameraInfo = new Camera.CameraInfo(); |
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private Size mPreviewSize; |
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private Size mCaptureSize; |
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private boolean mShowingPreview; |
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private boolean mAutoFocus; |
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private int mFacing; |
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private int mFlash; |
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private int mDisplayOrientation; |
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private TreeSet<Size> mPreviewSizes; |
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private TreeSet<Size> mCaptureSizes; |
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private MediaRecorder mMediaRecorder; |
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private CameraListener mCameraListener; |
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Camera2(@NonNull CameraListener cameraListener, @NonNull PreviewImpl preview) { |
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super(cameraListener, preview); |
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this.mCameraListener = cameraListener; |
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this.mPreviewSizes = new TreeSet<>(); |
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this.mCaptureSizes = new TreeSet<>(); |
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this.mVideoFile = new File(mPreview.getView().getContext().getExternalFilesDir(null), "video.mp4"); |
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preview.setCallback(new PreviewImpl.Callback() { |
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@Override |
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public void onSurfaceChanged() { |
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if (mCamera != null) { |
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setUpPreview(); |
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adjustCameraParameters(); |
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} |
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} |
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}); |
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} |
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@Override |
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void start() { |
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setFacingInternal(mFacing); |
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openCamera(); |
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if (mPreview.isReady()) { |
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setUpPreview(); |
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} |
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mShowingPreview = true; |
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mCamera.startPreview(); |
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} |
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@Override |
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void stop() { |
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if (mCamera != null) { |
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mCamera.stopPreview(); |
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} |
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mShowingPreview = false; |
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releaseCamera(); |
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} |
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@Override |
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boolean isCameraOpened() { |
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return mCamera != null; |
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} |
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@Override |
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void setFacing(int facing) { |
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if (mFacing == facing) { |
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return; |
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} |
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if (setFacingInternal(facing) && isCameraOpened()) { |
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stop(); |
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start(); |
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} |
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} |
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private boolean setFacingInternal(int facing) { |
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int trueValue = FACING_MODES.get(facing, -1); |
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if (trueValue == -1) { |
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return false; |
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} |
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for (int i = 0, count = Camera.getNumberOfCameras(); i < count; i++) { |
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Camera.getCameraInfo(i, mCameraInfo); |
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if (mCameraInfo.facing == trueValue) { |
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mCameraId = i; |
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mFacing = facing; |
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return true; |
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} |
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} |
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return false; |
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} |
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@Override |
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void setFlash(int flash) { |
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if (flash == mFlash) { |
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return; |
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} |
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if (setFlashInternal(flash)) { |
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mCamera.setParameters(mCameraParameters); |
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} |
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} |
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private boolean setFlashInternal(int flash) { |
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if (isCameraOpened()) { |
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List<String> modes = mCameraParameters.getSupportedFlashModes(); |
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String mode = FLASH_MODES.get(flash); |
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if (modes != null && modes.contains(mode)) { |
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mCameraParameters.setFlashMode(mode); |
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mFlash = flash; |
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return true; |
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} |
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String currentMode = FLASH_MODES.get(mFlash); |
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if (modes == null || !modes.contains(currentMode)) { |
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mCameraParameters.setFlashMode(Camera.Parameters.FLASH_MODE_OFF); |
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mFlash = CameraKit.Constants.FLASH_OFF; |
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return true; |
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} |
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return false; |
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} else { |
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mFlash = flash; |
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return false; |
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} |
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} |
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@Override |
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void setAutoFocus(boolean autoFocus) { |
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if (autoFocus == mAutoFocus) { |
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return; |
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} |
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if (setAutoFocusInternal(autoFocus)) { |
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mCamera.setParameters(mCameraParameters); |
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} |
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} |
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private boolean setAutoFocusInternal(boolean autoFocus) { |
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mAutoFocus = autoFocus; |
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if (isCameraOpened()) { |
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final List<String> modes = mCameraParameters.getSupportedFocusModes(); |
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if (autoFocus && modes.contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE)) { |
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mCameraParameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE); |
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} else if (modes.contains(Camera.Parameters.FOCUS_MODE_FIXED)) { |
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mCameraParameters.setFocusMode(Camera.Parameters.FOCUS_MODE_FIXED); |
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} else if (modes.contains(Camera.Parameters.FOCUS_MODE_INFINITY)) { |
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mCameraParameters.setFocusMode(Camera.Parameters.FOCUS_MODE_INFINITY); |
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} else { |
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mCameraParameters.setFocusMode(modes.get(0)); |
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} |
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mCameraParameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO); |
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return true; |
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} else { |
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return false; |
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} |
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} |
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@Override |
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void captureStandard() { |
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if (!isCameraOpened()) { |
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throw new IllegalStateException("Camera is not ready. Call start() before takePicture()."); |
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} |
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if (mAutoFocus) { |
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mCamera.cancelAutoFocus(); |
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mCamera.autoFocus(new Camera.AutoFocusCallback() { |
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@Override |
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public void onAutoFocus(boolean success, Camera camera) { |
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takePictureInternal(); |
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} |
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}); |
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} else { |
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takePictureInternal(); |
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} |
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} |
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void takePictureInternal() { |
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mCamera.takePicture(null, null, null, new Camera.PictureCallback() { |
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@Override |
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public void onPictureTaken(byte[] data, Camera camera) { |
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mCameraListener.onPictureTaken(data); |
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camera.startPreview(); |
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} |
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}); |
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} |
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@Override |
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void captureStill() { |
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mCamera.setOneShotPreviewCallback(new Camera.PreviewCallback() { |
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@Override |
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public void onPreviewFrame(byte[] data, Camera camera) { |
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new Thread(new ProcessStillTask(data, camera, mCameraInfo, new ProcessStillTask.OnStillProcessedListener() { |
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@Override |
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public void onStillProcessed(final YuvImage yuv) { |
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mPreview.getView().post(new Runnable() { |
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@Override |
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public void run() { |
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mCameraListener.onPictureTaken(yuv); |
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} |
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}); |
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} |
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})).start(); |
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} |
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}); |
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} |
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static class ProcessStillTask implements Runnable { |
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byte[] data; |
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Camera camera; |
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Camera.CameraInfo cameraInfo; |
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OnStillProcessedListener onStillProcessedListener; |
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public ProcessStillTask(byte[] data, Camera camera, Camera.CameraInfo cameraInfo, OnStillProcessedListener onStillProcessedListener) { |
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this.data = data; |
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this.camera = camera; |
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this.cameraInfo = cameraInfo; |
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this.onStillProcessedListener = onStillProcessedListener; |
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} |
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@Override |
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public void run() { |
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Camera.Parameters parameters = camera.getParameters(); |
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int width = parameters.getPreviewSize().width; |
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int height = parameters.getPreviewSize().height; |
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int rotation = cameraInfo.orientation; |
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byte[] rotatedData = YuvUtils.rotateNV21(data, width, height, rotation); |
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int postWidth; |
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int postHeight; |
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switch (rotation) { |
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case 90: |
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case 270: |
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postWidth = height; |
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postHeight = width; |
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break; |
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case 0: |
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case 180: |
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default: |
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postWidth = width; |
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postHeight = height; |
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break; |
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} |
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YuvImage yuv = new YuvImage(rotatedData, parameters.getPreviewFormat(), postWidth, postHeight, null); |
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onStillProcessedListener.onStillProcessed(yuv); |
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} |
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interface OnStillProcessedListener { |
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void onStillProcessed(YuvImage yuv); |
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} |
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} |
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@Override |
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void startVideo() { |
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try { |
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prepareMediaRecorder(); |
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} catch (IOException e) { |
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if (mMediaRecorder != null) { |
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mMediaRecorder.release(); |
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} |
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return; |
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} |
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} |
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void prepareMediaRecorder() throws IOException { |
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mCamera.unlock(); |
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mMediaRecorder = new MediaRecorder(); |
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mMediaRecorder.setCamera(mCamera); |
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mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER); |
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mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); |
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mMediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_480P)); |
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mMediaRecorder.setOutputFile(mVideoFile.getAbsolutePath()); |
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mMediaRecorder.setOrientationHint(mCameraInfo.orientation); |
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mMediaRecorder.prepare(); |
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mMediaRecorder.start(); |
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} |
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@Override |
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void endVideo() { |
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if (mMediaRecorder != null) { |
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mMediaRecorder.stop(); |
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mMediaRecorder = null; |
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} |
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mCameraListener.onVideoTaken(mVideoFile); |
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} |
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@Override |
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void focus() { |
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mCamera.autoFocus(null); |
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} |
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@Override |
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void setDisplayOrientation(int displayOrientation) { |
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if (mDisplayOrientation == displayOrientation) { |
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return; |
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} |
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mDisplayOrientation = displayOrientation; |
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if (isCameraOpened()) { |
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int cameraRotation = calcCameraRotation(displayOrientation); |
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mCameraParameters.setRotation(cameraRotation); |
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mCamera.setParameters(mCameraParameters); |
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final boolean needsToStopPreview = mShowingPreview && Build.VERSION.SDK_INT < 14; |
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if (needsToStopPreview) { |
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mCamera.stopPreview(); |
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} |
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mCamera.setDisplayOrientation(cameraRotation); |
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if (needsToStopPreview) { |
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mCamera.startPreview(); |
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} |
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} |
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} |
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private int calcCameraRotation(int rotation) { |
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if (mCameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) { |
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return (360 - (mCameraInfo.orientation + rotation) % 360) % 360; |
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} else { |
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return (mCameraInfo.orientation - rotation + 360) % 360; |
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} |
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} |
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private void setUpPreview() { |
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try { |
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if (mPreview.getOutputClass() == SurfaceHolder.class) { |
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final boolean needsToStopPreview = mShowingPreview && Build.VERSION.SDK_INT < 14; |
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if (needsToStopPreview) { |
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mCamera.stopPreview(); |
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} |
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mCamera.setPreviewDisplay(mPreview.getSurfaceHolder()); |
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if (needsToStopPreview) { |
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mCamera.startPreview(); |
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} |
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} else { |
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mCamera.setPreviewTexture(mPreview.getSurfaceTexture()); |
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} |
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} catch (IOException e) { |
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throw new RuntimeException(e); |
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} |
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} |
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private void adjustCameraParameters() { |
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SortedSet<Size> sizes = mPreviewSizes; |
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mPreviewSize = chooseOptimalSize(sizes); |
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final Camera.Size currentSize = mCameraParameters.getPictureSize(); |
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if (currentSize.width != mPreviewSize.getWidth() || currentSize.height != mPreviewSize.getHeight()) { |
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Iterator<Size> iterator = mCaptureSizes.descendingIterator(); |
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Size pictureSize; |
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while ((pictureSize = iterator.next()) != null) { |
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if (AspectRatio.of(mPreviewSize.getWidth(), mPreviewSize.getHeight()).matches(pictureSize)) { |
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break; |
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} |
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} |
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if (pictureSize == null) { |
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pictureSize = mCaptureSizes.last(); |
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} |
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mCaptureSize = pictureSize; |
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if (mShowingPreview) { |
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mCamera.stopPreview(); |
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} |
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mCameraParameters.setPreviewSize(mPreviewSize.getWidth(), mPreviewSize.getHeight()); |
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mPreview.setTruePreviewSize(mPreviewSize.getWidth(), mPreviewSize.getHeight()); |
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mCameraParameters.setPictureSize(pictureSize.getWidth(), pictureSize.getHeight()); |
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mCameraParameters.setRotation(calcCameraRotation(mDisplayOrientation) + (mFacing == CameraKit.Constants.FACING_FRONT ? 180 : 0)); |
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setAutoFocusInternal(mAutoFocus); |
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//setFlashInternal(mFlash);
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mCamera.setParameters(mCameraParameters); |
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if (mShowingPreview) { |
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mCamera.startPreview(); |
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} |
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} |
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} |
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private Size chooseOptimalSize(SortedSet<Size> sizes) { |
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if (!mPreview.isReady()) { // Not yet laid out
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return sizes.last(); // Return the smallest size
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} |
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int desiredWidth; |
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int desiredHeight; |
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final int surfaceWidth = mPreview.getWidth(); |
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final int surfaceHeight = mPreview.getHeight(); |
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if (mDisplayOrientation == 90 || mDisplayOrientation == 270) { |
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desiredWidth = surfaceHeight; |
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desiredHeight = surfaceWidth; |
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} else { |
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desiredWidth = surfaceWidth; |
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desiredHeight = surfaceHeight; |
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} |
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Size result = null; |
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for (Size size : sizes) { // Iterate from small to large
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if (desiredWidth <= size.getWidth() && desiredHeight <= size.getHeight()) { |
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return size; |
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} |
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result = size; |
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} |
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return result; |
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} |
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private void openCamera() { |
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if (mCamera != null) { |
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releaseCamera(); |
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} |
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mCamera = Camera.open(mCameraId); |
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mCameraParameters = mCamera.getParameters(); |
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// Supported preview sizes
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mPreviewSizes.clear(); |
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|
for (Camera.Size size : mCameraParameters.getSupportedPreviewSizes()) { |
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|
mPreviewSizes.add(new Size(size.width, size.height)); |
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} |
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|
// Supported picture sizes;
|
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|
mCaptureSizes.clear(); |
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|
for (Camera.Size size : mCameraParameters.getSupportedPictureSizes()) { |
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|
mCaptureSizes.add(new Size(size.width, size.height)); |
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} |
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|
adjustCameraParameters(); |
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|
mCamera.setDisplayOrientation(calcCameraRotation(mDisplayOrientation)); |
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|
mCameraListener.onCameraOpened(); |
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} |
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private void releaseCamera() { |
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|
if (mCamera != null) { |
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|
mCamera.release(); |
|
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|
|
mCamera = null; |
|
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|
mCameraListener.onCameraClosed(); |
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|
} |
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|
} |
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@Override |
|
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|
|
Size getCaptureResolution() { |
|
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|
|
return mCaptureSize; |
|
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|
} |
|
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|
@Override |
|
|
|
|
Size getPreviewResolution() { |
|
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|
|
return mPreviewSize; |
|
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|
|
} |
|
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|
|
} |
Dylan McIntyre
8 years ago