/**
* Update preview TextureView rotation to accommodate discrepancy between preview buffer and the
* view window orientation.
*
* <p>Assumptions: - Aspect ratio for the sensor buffers is in landscape orientation, - Dimensions
* of buffers received are rotated to the natural device orientation. - The contents of each
* buffer are rotated by the inverse of the display rotation. - Surface scales the buffer to fit
* the current view bounds. TODO: Make this method works for all orientations
*/
protected void updatePreviewDisplayRotation(Size previewSize, TextureView textureView) {
int rotationDegrees = 0;
Camera2MultiViewCtsActivity activity = (Camera2MultiViewCtsActivity) mContext;
int displayRotation = activity.getWindowManager().getDefaultDisplay().getRotation();
Configuration config = activity.getResources().getConfiguration();
// Get UI display rotation
switch (displayRotation) {
case Surface.ROTATION_0:
rotationDegrees = 0;
break;
case Surface.ROTATION_90:
rotationDegrees = 90;
break;
case Surface.ROTATION_180:
rotationDegrees = 180;
break;
case Surface.ROTATION_270:
rotationDegrees = 270;
break;
}
// Get device natural orientation
int deviceOrientation = Configuration.ORIENTATION_PORTRAIT;
if ((rotationDegrees % 180 == 0 && config.orientation == Configuration.ORIENTATION_LANDSCAPE)
|| ((rotationDegrees % 180 != 0
&& config.orientation == Configuration.ORIENTATION_PORTRAIT))) {
deviceOrientation = Configuration.ORIENTATION_LANDSCAPE;
}
// Rotate the buffer dimensions if device orientation is portrait.
int effectiveWidth = previewSize.getWidth();
int effectiveHeight = previewSize.getHeight();
if (deviceOrientation == Configuration.ORIENTATION_PORTRAIT) {
effectiveWidth = previewSize.getHeight();
effectiveHeight = previewSize.getWidth();
}
// Find and center view rect and buffer rect
Matrix transformMatrix = textureView.getTransform(null);
int viewWidth = textureView.getWidth();
int viewHeight = textureView.getHeight();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufRect = new RectF(0, 0, effectiveWidth, effectiveHeight);
float centerX = viewRect.centerX();
float centerY = viewRect.centerY();
bufRect.offset(centerX - bufRect.centerX(), centerY - bufRect.centerY());
// Undo ScaleToFit.FILL done by the surface
transformMatrix.setRectToRect(viewRect, bufRect, Matrix.ScaleToFit.FILL);
// Rotate buffer contents to proper orientation
transformMatrix.postRotate((360 - rotationDegrees) % 360, centerX, centerY);
if ((rotationDegrees % 180) == 90) {
int temp = effectiveWidth;
effectiveWidth = effectiveHeight;
effectiveHeight = temp;
}
// Scale to fit view, cropping the longest dimension
float scale =
Math.max(viewWidth / (float) effectiveWidth, viewHeight / (float) effectiveHeight);
transformMatrix.postScale(scale, scale, centerX, centerY);
Handler handler = new Handler(Looper.getMainLooper());
class TransformUpdater implements Runnable {
TextureView mView;
Matrix mTransformMatrix;
TransformUpdater(TextureView view, Matrix matrix) {
mView = view;
mTransformMatrix = matrix;
}
@Override
public void run() {
mView.setTransform(mTransformMatrix);
}
}
handler.post(new TransformUpdater(textureView, transformMatrix));
}
private void yuvBurstTestByCamera(String cameraId) throws Exception {
// Parameters
final int MAX_CONVERGENCE_FRAMES = 150; // 5 sec at 30fps
final long MAX_PREVIEW_RESULT_TIMEOUT_MS = 1000;
final int BURST_SIZE = 100;
final float FRAME_DURATION_MARGIN_FRACTION = 0.1f;
// Find a good preview size (bound to 1080p)
final Size previewSize = mOrderedPreviewSizes.get(0);
// Get maximum YUV_420_888 size
final Size stillSize =
getSortedSizesForFormat(cameraId, mCameraManager, ImageFormat.YUV_420_888, /*bound*/ null)
.get(0);
// Find max pipeline depth and sync latency
final int maxPipelineDepth =
mStaticInfo.getCharacteristics().get(CameraCharacteristics.REQUEST_PIPELINE_MAX_DEPTH);
final int maxSyncLatency =
mStaticInfo.getCharacteristics().get(CameraCharacteristics.SYNC_MAX_LATENCY);
// Find minimum frame duration for full-res YUV_420_888
StreamConfigurationMap config =
mStaticInfo.getCharacteristics().get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
final long minStillFrameDuration =
config.getOutputMinFrameDuration(ImageFormat.YUV_420_888, stillSize);
// Find suitable target FPS range - as high as possible
List<Range<Integer>> fpsRanges =
Arrays.asList(mStaticInfo.getAeAvailableTargetFpsRangesChecked());
Range<Integer> targetRange = mStaticInfo.getAeMaxTargetFpsRange();
// Add 0.05 here so Fps like 29.99 evaluated to 30
int minBurstFps = (int) Math.floor(1e9 / minStillFrameDuration + 0.05f);
boolean foundConstantMaxYUVRange = false;
boolean foundYUVStreamingRange = false;
for (Range<Integer> fpsRange : fpsRanges) {
if (fpsRange.getLower() == minBurstFps && fpsRange.getUpper() == minBurstFps) {
foundConstantMaxYUVRange = true;
}
if (fpsRange.getLower() <= 15 && fpsRange.getUpper() == minBurstFps) {
foundYUVStreamingRange = true;
}
}
assertTrue(
String.format(
"Cam %s: Target FPS range of (%d, %d) must be supported",
cameraId, minBurstFps, minBurstFps),
foundConstantMaxYUVRange);
assertTrue(
String.format(
"Cam %s: Target FPS range of (x, %d) where x <= 15 must be supported",
cameraId, minBurstFps),
foundYUVStreamingRange);
assertTrue(
String.format(
"Cam %s: No target FPS range found with minimum FPS above "
+ " 1/minFrameDuration (%d fps, duration %d ns) for full-resolution YUV",
cameraId, minBurstFps, minStillFrameDuration),
targetRange.getLower() >= minBurstFps);
Log.i(
TAG,
String.format(
"Selected frame rate range %d - %d for YUV burst",
targetRange.getLower(), targetRange.getUpper()));
// Check if READ_SENSOR_SETTINGS is supported
final boolean checkSensorSettings =
mStaticInfo.isCapabilitySupported(
CameraCharacteristics.REQUEST_AVAILABLE_CAPABILITIES_READ_SENSOR_SETTINGS);
// Configure basic preview and burst settings
CaptureRequest.Builder previewBuilder =
mCamera.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
CaptureRequest.Builder burstBuilder =
mCamera.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
previewBuilder.set(CaptureRequest.CONTROL_AE_TARGET_FPS_RANGE, targetRange);
burstBuilder.set(CaptureRequest.CONTROL_AE_TARGET_FPS_RANGE, targetRange);
burstBuilder.set(CaptureRequest.CONTROL_AE_LOCK, true);
burstBuilder.set(CaptureRequest.CONTROL_AWB_LOCK, true);
// Create session and start up preview
SimpleCaptureCallback resultListener = new SimpleCaptureCallback();
ImageDropperListener imageDropper = new ImageDropperListener();
prepareCaptureAndStartPreview(
previewBuilder,
burstBuilder,
previewSize,
stillSize,
ImageFormat.YUV_420_888,
resultListener,
/*maxNumImages*/ 3,
imageDropper);
// Create burst
List<CaptureRequest> burst = new ArrayList<>();
for (int i = 0; i < BURST_SIZE; i++) {
burst.add(burstBuilder.build());
}
// Converge AE/AWB
int frameCount = 0;
while (true) {
CaptureResult result = resultListener.getCaptureResult(MAX_PREVIEW_RESULT_TIMEOUT_MS);
int aeState = result.get(CaptureResult.CONTROL_AE_STATE);
int awbState = result.get(CaptureResult.CONTROL_AWB_STATE);
if (DEBUG) {
Log.d(TAG, "aeState: " + aeState + ". awbState: " + awbState);
}
if ((aeState == CaptureResult.CONTROL_AE_STATE_CONVERGED
|| aeState == CaptureResult.CONTROL_AE_STATE_FLASH_REQUIRED)
&& awbState == CaptureResult.CONTROL_AWB_STATE_CONVERGED) {
break;
}
frameCount++;
assertTrue(
String.format(
"Cam %s: Can not converge AE and AWB within %d frames",
cameraId, MAX_CONVERGENCE_FRAMES),
frameCount < MAX_CONVERGENCE_FRAMES);
}
// Lock AF if there's a focuser
if (mStaticInfo.hasFocuser()) {
previewBuilder.set(
CaptureRequest.CONTROL_AF_TRIGGER, CaptureRequest.CONTROL_AF_TRIGGER_START);
mSession.capture(previewBuilder.build(), resultListener, mHandler);
previewBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CaptureRequest.CONTROL_AF_TRIGGER_IDLE);
frameCount = 0;
while (true) {
CaptureResult result = resultListener.getCaptureResult(MAX_PREVIEW_RESULT_TIMEOUT_MS);
int afState = result.get(CaptureResult.CONTROL_AF_STATE);
if (DEBUG) {
Log.d(TAG, "afState: " + afState);
}
if (afState == CaptureResult.CONTROL_AF_STATE_FOCUSED_LOCKED
|| afState == CaptureResult.CONTROL_AF_STATE_NOT_FOCUSED_LOCKED) {
break;
}
frameCount++;
assertTrue(
String.format(
"Cam %s: Cannot lock AF within %d frames", cameraId, MAX_CONVERGENCE_FRAMES),
frameCount < MAX_CONVERGENCE_FRAMES);
}
}
// Lock AE/AWB
previewBuilder.set(CaptureRequest.CONTROL_AE_LOCK, true);
previewBuilder.set(CaptureRequest.CONTROL_AWB_LOCK, true);
CaptureRequest lockedRequest = previewBuilder.build();
mSession.setRepeatingRequest(lockedRequest, resultListener, mHandler);
// Wait for first result with locking
resultListener.drain();
CaptureResult lockedResult =
resultListener.getCaptureResultForRequest(lockedRequest, maxPipelineDepth);
int pipelineDepth = lockedResult.get(CaptureResult.REQUEST_PIPELINE_DEPTH);
// Then start waiting on results to get the first result that should be synced
// up, and also fire the burst as soon as possible
if (maxSyncLatency == CameraCharacteristics.SYNC_MAX_LATENCY_PER_FRAME_CONTROL) {
// The locked result we have is already synchronized so start the burst
mSession.captureBurst(burst, resultListener, mHandler);
} else {
// Need to get a synchronized result, and may need to start burst later to
// be synchronized correctly
boolean burstSent = false;
// Calculate how many requests we need to still send down to camera before we
// know the settings have settled for the burst
int numFramesWaited = maxSyncLatency;
if (numFramesWaited == CameraCharacteristics.SYNC_MAX_LATENCY_UNKNOWN) {
numFramesWaited = NUM_FRAMES_WAITED_FOR_UNKNOWN_LATENCY;
}
int requestsNeededToSync = numFramesWaited - pipelineDepth;
for (int i = 0; i < numFramesWaited; i++) {
if (!burstSent && requestsNeededToSync <= 0) {
mSession.captureBurst(burst, resultListener, mHandler);
burstSent = true;
}
lockedResult = resultListener.getCaptureResult(MAX_PREVIEW_RESULT_TIMEOUT_MS);
requestsNeededToSync--;
}
assertTrue("Cam " + cameraId + ": Burst failed to fire!", burstSent);
}
// Read in locked settings if supported
long burstExposure = 0;
long burstFrameDuration = 0;
int burstSensitivity = 0;
if (checkSensorSettings) {
burstExposure = lockedResult.get(CaptureResult.SENSOR_EXPOSURE_TIME);
burstFrameDuration = lockedResult.get(CaptureResult.SENSOR_FRAME_DURATION);
burstSensitivity = lockedResult.get(CaptureResult.SENSOR_SENSITIVITY);
assertTrue(
String.format(
"Cam %s: Frame duration %d ns too short compared to " + "exposure time %d ns",
cameraId, burstFrameDuration, burstExposure),
burstFrameDuration >= burstExposure);
assertTrue(
String.format("Cam %s: Exposure time is not valid: %d", cameraId, burstExposure),
burstExposure > 0);
assertTrue(
String.format("Cam %s: Frame duration is not valid: %d", cameraId, burstFrameDuration),
burstFrameDuration > 0);
assertTrue(
String.format("Cam %s: Sensitivity is not valid: %d", cameraId, burstSensitivity),
burstSensitivity > 0);
}
// Process burst results
int burstIndex = 0;
CaptureResult burstResult =
resultListener.getCaptureResultForRequest(burst.get(burstIndex), maxPipelineDepth + 1);
long prevTimestamp = -1;
final long frameDurationBound =
(long) (minStillFrameDuration * (1 + FRAME_DURATION_MARGIN_FRACTION));
List<Long> frameDurations = new ArrayList<>();
while (true) {
// Verify the result
assertTrue(
"Cam " + cameraId + ": Result doesn't match expected request",
burstResult.getRequest() == burst.get(burstIndex));
// Verify locked settings
if (checkSensorSettings) {
long exposure = burstResult.get(CaptureResult.SENSOR_EXPOSURE_TIME);
int sensitivity = burstResult.get(CaptureResult.SENSOR_SENSITIVITY);
assertTrue("Cam " + cameraId + ": Exposure not locked!", exposure == burstExposure);
assertTrue(
"Cam " + cameraId + ": Sensitivity not locked!", sensitivity == burstSensitivity);
}
// Collect inter-frame durations
long timestamp = burstResult.get(CaptureResult.SENSOR_TIMESTAMP);
if (prevTimestamp != -1) {
long frameDuration = timestamp - prevTimestamp;
frameDurations.add(frameDuration);
if (DEBUG) {
Log.i(
TAG,
String.format("Frame %03d Duration %.2f ms", burstIndex, frameDuration / 1e6));
}
}
prevTimestamp = timestamp;
// Get next result
burstIndex++;
if (burstIndex == BURST_SIZE) break;
burstResult = resultListener.getCaptureResult(MAX_PREVIEW_RESULT_TIMEOUT_MS);
}
// Verify inter-frame durations
long meanFrameSum = 0;
for (Long duration : frameDurations) {
meanFrameSum += duration;
}
float meanFrameDuration = (float) meanFrameSum / frameDurations.size();
float stddevSum = 0;
for (Long duration : frameDurations) {
stddevSum += (duration - meanFrameDuration) * (duration - meanFrameDuration);
}
float stddevFrameDuration = (float) Math.sqrt(1.f / (frameDurations.size() - 1) * stddevSum);
Log.i(
TAG,
String.format(
"Cam %s: Burst frame duration mean: %.1f, stddev: %.1f",
cameraId, meanFrameDuration, stddevFrameDuration));
assertTrue(
String.format(
"Cam %s: Burst frame duration mean %.1f ns is larger than acceptable, "
+ "expecting below %d ns, allowing below %d",
cameraId, meanFrameDuration, minStillFrameDuration, frameDurationBound),
meanFrameDuration <= frameDurationBound);
// Calculate upper 97.5% bound (assuming durations are normally distributed...)
float limit95FrameDuration = meanFrameDuration + 2 * stddevFrameDuration;
// Don't enforce this yet, but warn
if (limit95FrameDuration > frameDurationBound) {
Log.w(
TAG,
String.format(
"Cam %s: Standard deviation is too large compared to limit: "
+ "mean: %.1f ms, stddev: %.1f ms: 95%% bound: %f ms",
cameraId,
meanFrameDuration / 1e6,
stddevFrameDuration / 1e6,
limit95FrameDuration / 1e6));
}
}
