Mattia Iavarone
5 years ago
parent
e96c9f0846
commit
87796ea2f7
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package com.otaliastudios.cameraview.picture; |
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import android.hardware.Camera; |
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import android.hardware.camera2.CameraAccessException; |
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import android.hardware.camera2.CameraCaptureSession; |
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import android.hardware.camera2.CameraDevice; |
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import android.hardware.camera2.CaptureRequest; |
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import android.hardware.camera2.CaptureResult; |
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import android.hardware.camera2.TotalCaptureResult; |
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import android.media.Image; |
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import android.media.ImageReader; |
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import android.os.Build; |
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import android.view.Surface; |
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import com.otaliastudios.cameraview.CameraException; |
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import com.otaliastudios.cameraview.CameraLogger; |
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import com.otaliastudios.cameraview.PictureResult; |
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import com.otaliastudios.cameraview.internal.utils.ExifHelper; |
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import java.io.ByteArrayInputStream; |
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import java.io.IOException; |
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import java.nio.ByteBuffer; |
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import androidx.annotation.NonNull; |
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import androidx.annotation.Nullable; |
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import androidx.annotation.RequiresApi; |
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import androidx.exifinterface.media.ExifInterface; |
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/** |
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* A {@link PictureResult} that uses standard APIs. |
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*/ |
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@RequiresApi(Build.VERSION_CODES.LOLLIPOP) |
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public class Full2PictureRecorder extends PictureRecorder { |
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private static final String TAG = Full2PictureRecorder.class.getSimpleName(); |
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private static final CameraLogger LOG = CameraLogger.create(TAG); |
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private static final int STATE_IDLE = 0; |
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private static final int STATE_WAITING_FOCUS_LOCK = 1; |
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private static final int STATE_WAITING_PRECAPTURE_START = 2; |
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private static final int STATE_WAITING_PRECAPTURE_END = 3; |
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private static final int STATE_WAITING_CAPTURE = 4; |
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private static final int STATE_WAITING_IMAGE = 5; |
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private CameraCaptureSession mSession; |
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private CaptureRequest.Builder mBuilder; |
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private CameraCaptureSession.CaptureCallback mCallback; |
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private ImageReader mPictureReader; |
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private CaptureRequest.Builder mPictureBuilder; |
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private int mState = STATE_IDLE; |
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public Full2PictureRecorder(@NonNull PictureResult.Stub stub, |
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@Nullable PictureResultListener listener, |
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@NonNull CameraCaptureSession session, |
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@NonNull CaptureRequest.Builder builder, |
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@NonNull CameraCaptureSession.CaptureCallback callback, |
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@NonNull CaptureRequest.Builder pictureBuilder, |
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@NonNull ImageReader pictureReader) { |
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super(stub, listener); |
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mSession = session; |
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mBuilder = builder; |
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mCallback = callback; |
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mPictureBuilder = pictureBuilder; |
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mPictureReader = pictureReader; |
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mPictureReader.setOnImageAvailableListener(new ImageReader.OnImageAvailableListener() { |
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@Override |
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public void onImageAvailable(ImageReader reader) { |
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mState = STATE_IDLE; |
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// Read the JPEG.
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try { |
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Image image = reader.acquireLatestImage(); |
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ByteBuffer buffer = image.getPlanes()[0].getBuffer(); |
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byte[] bytes = new byte[buffer.remaining()]; |
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buffer.get(bytes); |
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mResult.data = bytes; |
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mResult.format = PictureResult.FORMAT_JPEG; |
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} catch (Exception e) { |
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mResult = null; |
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mError = e; |
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} |
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// Before leaving, unlock focus.
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try { |
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mBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, |
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CaptureRequest.CONTROL_AF_TRIGGER_CANCEL); |
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mSession.capture(mBuilder.build(), mCallback, null); |
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} catch (CameraAccessException ignore) { } |
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// Leave.
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dispatchResult(); |
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} |
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}, null); |
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} |
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@Override |
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public void take() { |
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runFocusLock(); |
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} |
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private void runFocusLock() { |
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try { |
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mState = STATE_WAITING_FOCUS_LOCK; |
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mBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, |
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CaptureRequest.CONTROL_AF_TRIGGER_START); |
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mSession.capture(mBuilder.build(), mCallback, null); |
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} catch (CameraAccessException e) { |
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mResult = null; |
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mError = e; |
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dispatchResult(); |
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} |
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} |
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private void runPrecapture() { |
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try { |
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mState = STATE_WAITING_PRECAPTURE_START; |
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mBuilder.set(CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER, |
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CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER_START); |
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mSession.capture(mBuilder.build(), mCallback, null); |
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} catch (CameraAccessException e) { |
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mResult = null; |
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mError = e; |
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dispatchResult(); |
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} |
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} |
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private void runCapture() { |
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try { |
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mPictureBuilder.setTag(CameraDevice.TEMPLATE_STILL_CAPTURE); |
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mPictureBuilder.addTarget(mPictureReader.getSurface()); |
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mPictureBuilder.set(CaptureRequest.JPEG_ORIENTATION, mResult.rotation); |
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// mCaptureSession.stopRepeating();
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mSession.abortCaptures(); |
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mSession.capture(mPictureBuilder.build(), mCallback, null); |
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} catch (CameraAccessException e) { |
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mResult = null; |
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mError = e; |
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dispatchResult(); |
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} |
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} |
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public void process(@NonNull CaptureResult result) { |
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switch (mState) { |
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case STATE_IDLE: break; |
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case STATE_WAITING_FOCUS_LOCK: { |
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Integer afState = result.get(CaptureResult.CONTROL_AF_STATE); |
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if (afState == null) { |
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runCapture(); |
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} else if (afState == CaptureResult.CONTROL_AF_STATE_FOCUSED_LOCKED |
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|| afState == CaptureResult.CONTROL_AF_STATE_NOT_FOCUSED_LOCKED) { |
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// CONTROL_AE_STATE can be null on some devices
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Integer aeState = result.get(CaptureResult.CONTROL_AE_STATE); |
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if (aeState == null || aeState == CaptureResult.CONTROL_AE_STATE_CONVERGED) { |
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mState = STATE_WAITING_CAPTURE; |
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runCapture(); |
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} else { |
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runPrecapture(); |
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} |
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} |
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break; |
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} |
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case STATE_WAITING_PRECAPTURE_START: { |
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Integer aeState = result.get(CaptureResult.CONTROL_AE_STATE); |
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if (aeState == null || |
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aeState == CaptureResult.CONTROL_AE_STATE_PRECAPTURE || |
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aeState == CaptureRequest.CONTROL_AE_STATE_FLASH_REQUIRED) { |
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mState = STATE_WAITING_PRECAPTURE_END; |
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} |
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break; |
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} |
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case STATE_WAITING_PRECAPTURE_END: { |
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Integer aeState = result.get(CaptureResult.CONTROL_AE_STATE); |
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if (aeState == null |
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mState = STATE_WAITING_CAPTURE; |
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runCapture(); |
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} |
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break; |
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} |
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case STATE_WAITING_CAPTURE: { |
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if (result instanceof TotalCaptureResult |
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&& result.getRequest().getTag() == (Integer) CameraDevice.TEMPLATE_STILL_CAPTURE) { |
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mState = STATE_WAITING_IMAGE; |
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} |
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break; |
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} |
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} |
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} |
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@Override |
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protected void dispatchResult() { |
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mState = STATE_IDLE; |
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super.dispatchResult(); |
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} |
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} |
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