FrameProcessor::FrameProcessor(wp<CameraDeviceBase> device,
sp<Camera2Client> client) :
FrameProcessorBase(device),
mClient(client),
mLastFrameNumberOfFaces(0),
mLast3AFrameNumber(-1) {
sp<CameraDeviceBase> d = device.promote();
mSynthesize3ANotify = !(d->willNotify3A());
{
SharedParameters::Lock l(client->getParameters());
if (client->getCameraDeviceVersion() >= CAMERA_DEVICE_API_VERSION_3_2) {
mUsePartialResult = (mNumPartialResults > 1);
} else {
mUsePartialResult = l.mParameters.quirks.partialResults;
}
// Initialize starting 3A state
m3aState.afTriggerId = l.mParameters.afTriggerCounter;
m3aState.aeTriggerId = l.mParameters.precaptureTriggerCounter;
// Check if lens is fixed-focus
if (l.mParameters.focusMode == Parameters::FOCUS_MODE_FIXED) {
m3aState.afMode = ANDROID_CONTROL_AF_MODE_OFF;
}
}
}
status_t FrameProcessor::process3aState(const CaptureResult &frame,
const sp<Camera2Client> &client) {
ATRACE_CALL();
const CameraMetadata &metadata = frame.mMetadata;
camera_metadata_ro_entry_t entry;
int cameraId = client->getCameraId();
entry = metadata.find(ANDROID_REQUEST_FRAME_COUNT);
int32_t frameNumber = entry.data.i32[0];
// Don't send 3A notifications for the same frame number twice
if (frameNumber <= mLast3AFrameNumber) {
ALOGV("%s: Already sent 3A for frame number %d, skipping",
__FUNCTION__, frameNumber);
return OK;
}
mLast3AFrameNumber = frameNumber;
// Get 3A states from result metadata
bool gotAllStates = true;
AlgState new3aState;
// TODO: Also use AE mode, AE trigger ID
gotAllStates &= get3aResult<uint8_t>(metadata, ANDROID_CONTROL_AF_MODE,
&new3aState.afMode, frameNumber, cameraId);
gotAllStates &= get3aResult<uint8_t>(metadata, ANDROID_CONTROL_AWB_MODE,
&new3aState.awbMode, frameNumber, cameraId);
gotAllStates &= get3aResult<uint8_t>(metadata, ANDROID_CONTROL_AE_STATE,
&new3aState.aeState, frameNumber, cameraId);
gotAllStates &= get3aResult<uint8_t>(metadata, ANDROID_CONTROL_AF_STATE,
&new3aState.afState, frameNumber, cameraId);
gotAllStates &= get3aResult<uint8_t>(metadata, ANDROID_CONTROL_AWB_STATE,
&new3aState.awbState, frameNumber, cameraId);
if (client->getCameraDeviceVersion() >= CAMERA_DEVICE_API_VERSION_3_2) {
new3aState.afTriggerId = frame.mResultExtras.afTriggerId;
new3aState.aeTriggerId = frame.mResultExtras.precaptureTriggerId;
} else {
gotAllStates &= get3aResult<int32_t>(metadata, ANDROID_CONTROL_AF_TRIGGER_ID,
&new3aState.afTriggerId, frameNumber, cameraId);
gotAllStates &= get3aResult<int32_t>(metadata, ANDROID_CONTROL_AE_PRECAPTURE_ID,
&new3aState.aeTriggerId, frameNumber, cameraId);
}
if (!gotAllStates) return BAD_VALUE;
if (new3aState.aeState != m3aState.aeState) {
ALOGV("%s: Camera %d: AE state %d->%d",
__FUNCTION__, cameraId,
m3aState.aeState, new3aState.aeState);
client->notifyAutoExposure(new3aState.aeState, new3aState.aeTriggerId);
}
if (new3aState.afState != m3aState.afState ||
new3aState.afMode != m3aState.afMode ||
new3aState.afTriggerId != m3aState.afTriggerId) {
ALOGV("%s: Camera %d: AF state %d->%d. AF mode %d->%d. Trigger %d->%d",
__FUNCTION__, cameraId,
m3aState.afState, new3aState.afState,
m3aState.afMode, new3aState.afMode,
m3aState.afTriggerId, new3aState.afTriggerId);
client->notifyAutoFocus(new3aState.afState, new3aState.afTriggerId);
}
if (new3aState.awbState != m3aState.awbState ||
new3aState.awbMode != m3aState.awbMode) {
ALOGV("%s: Camera %d: AWB state %d->%d. AWB mode %d->%d",
__FUNCTION__, cameraId,
m3aState.awbState, new3aState.awbState,
m3aState.awbMode, new3aState.awbMode);
client->notifyAutoWhitebalance(new3aState.awbState,
new3aState.aeTriggerId);
}
m3aState = new3aState;
return OK;
}
