Java Examples for android.hardware.camera2.CameraCaptureSession.CaptureCallback

/**
     * Submit a capture {@code count} times, then submit additional captures in order to ensure that
     * the camera will be synchronized.
     *
     * <p>
     * The additional capture count is determined by android.sync.maxLatency (or
     * a fixed {@value #NUM_FRAMES_WAITED_FOR_UNKNOWN_LATENCY}) captures if maxLatency is unknown).
     * </p>
     *
     * <p>Returns the number of captures that were submitted (at least 1), which is useful
     * with {@link #waitForNumResults}.</p>
     *
     * @param request capture request to forward to {@link CameraDevice#capture}
     * @param count the number of times to submit the request (minimally), must be at least 1
     * @param listener request listener to forward to {@link CameraDevice#capture}
     * @param handler handler to forward to {@link CameraDevice#capture}
     *
     * @return the number of captures that were submitted
     *
     * @throws IllegalArgumentException if {@code count} was not at least 1
     * @throws CameraAccessException if capturing failed
     */
protected int captureRequestsSynchronized(CaptureRequest request, int count, CaptureCallback listener, Handler handler) throws CameraAccessException {
    if (count < 1) {
        throw new IllegalArgumentException("count must be positive");
    }
    int maxLatency = mStaticInfo.getSyncMaxLatency();
    if (maxLatency == CameraMetadata.SYNC_MAX_LATENCY_UNKNOWN) {
        maxLatency = NUM_FRAMES_WAITED_FOR_UNKNOWN_LATENCY;
    }
    assertTrue("maxLatency is non-negative", maxLatency >= 0);
    int numCaptures = maxLatency + count;
    for (int i = 0; i < numCaptures; ++i) {
        mSession.capture(request, listener, handler);
    }
    return numCaptures;
}

private void captureListenerSplitterAllCallbacksReceived(CaptureCallback splitter, CaptureCallback... terminals) {
    splitter.onCaptureCompleted(null, null, null);
    for (CaptureCallback each : terminals) {
        verify(each).onCaptureCompleted(null, null, null);
    }
    splitter.onCaptureFailed(null, null, null);
    for (CaptureCallback each : terminals) {
        verify(each).onCaptureFailed(null, null, null);
    }
    splitter.onCaptureProgressed(null, null, null);
    for (CaptureCallback each : terminals) {
        verify(each).onCaptureProgressed(null, null, null);
    }
    splitter.onCaptureSequenceAborted(null, 0);
    for (CaptureCallback each : terminals) {
        verify(each).onCaptureSequenceAborted(null, 0);
    }
    splitter.onCaptureSequenceCompleted(null, 0, 0L);
    for (CaptureCallback each : terminals) {
        verify(each).onCaptureSequenceCompleted(null, 0, 0L);
    }
    splitter.onCaptureStarted(null, null, 0L, 1L);
    for (CaptureCallback each : terminals) {
        verify(each).onCaptureStarted(null, null, 0L, 1L);
    }
}

/**
     * Submit a capture {@code count} times, then submit additional captures in order to ensure that
     * the camera will be synchronized.
     *
     * <p>
     * The additional capture count is determined by android.sync.maxLatency (or
     * a fixed {@value #NUM_FRAMES_WAITED_FOR_UNKNOWN_LATENCY}) captures if maxLatency is unknown).
     * </p>
     *
     * <p>Returns the number of captures that were submitted (at least 1), which is useful
     * with {@link #waitForNumResults}.</p>
     *
     * @param request capture request to forward to {@link CameraDevice#capture}
     * @param count the number of times to submit the request (minimally), must be at least 1
     * @param listener request listener to forward to {@link CameraDevice#capture}
     * @param handler handler to forward to {@link CameraDevice#capture}
     *
     * @return the number of captures that were submitted
     *
     * @throws IllegalArgumentException if {@code count} was not at least 1
     * @throws CameraAccessException if capturing failed
     */
protected int captureRequestsSynchronized(CaptureRequest request, int count, CaptureCallback listener, Handler handler) throws CameraAccessException {
    if (count < 1) {
        throw new IllegalArgumentException("count must be positive");
    }
    int maxLatency = mStaticInfo.getSyncMaxLatency();
    if (maxLatency == CameraMetadata.SYNC_MAX_LATENCY_UNKNOWN) {
        maxLatency = NUM_FRAMES_WAITED_FOR_UNKNOWN_LATENCY;
    }
    assertTrue("maxLatency is non-negative", maxLatency >= 0);
    int numCaptures = maxLatency + count;
    for (int i = 0; i < numCaptures; ++i) {
        mSession.capture(request, listener, handler);
    }
    return numCaptures;
}