/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "Camera2-ZslProcessor"
#define ATRACE_TAG ATRACE_TAG_CAMERA
//#define LOG_NDEBUG 0
//#define LOG_NNDEBUG 0
#ifdef LOG_NNDEBUG
#define ALOGVV(...) ALOGV(__VA_ARGS__)
#else
#define ALOGVV(...) if (0) ALOGV(__VA_ARGS__)
#endif
#include <inttypes.h>
#include <utils/Log.h>
#include <utils/Trace.h>
#include <gui/Surface.h>
#include "common/CameraDeviceBase.h"
#include "api1/Camera2Client.h"
#include "api1/client2/CaptureSequencer.h"
#include "api1/client2/ZslProcessor.h"
#include "device3/Camera3Device.h"
typedef android::RingBufferConsumer::PinnedBufferItem PinnedBufferItem;
namespace android {
namespace camera2 {
namespace {
struct TimestampFinder : public RingBufferConsumer::RingBufferComparator {
typedef RingBufferConsumer::BufferInfo BufferInfo;
enum {
SELECT_I1 = -1,
SELECT_I2 = 1,
SELECT_NEITHER = 0,
};
explicit TimestampFinder(nsecs_t timestamp) : mTimestamp(timestamp) {}
~TimestampFinder() {}
template <typename T>
static void swap(T& a, T& b) {
T tmp = a;
a = b;
b = tmp;
}
/**
* Try to find the best candidate for a ZSL buffer.
* Match priority from best to worst:
* 1) Timestamps match.
* 2) Timestamp is closest to the needle (and lower).
* 3) Timestamp is closest to the needle (and higher).
*
*/
virtual int compare(const BufferInfo *i1,
const BufferInfo *i2) const {
// Try to select non-null object first.
if (i1 == NULL) {
return SELECT_I2;
} else if (i2 == NULL) {
return SELECT_I1;
}
// Best result: timestamp is identical
if (i1->mTimestamp == mTimestamp) {
return SELECT_I1;
} else if (i2->mTimestamp == mTimestamp) {
return SELECT_I2;
}
const BufferInfo* infoPtrs[2] = {
i1,
i2
};
int infoSelectors[2] = {
SELECT_I1,
SELECT_I2
};
// Order i1,i2 so that always i1.timestamp < i2.timestamp
if (i1->mTimestamp > i2->mTimestamp) {
swap(infoPtrs[0], infoPtrs[1]);
swap(infoSelectors[0], infoSelectors[1]);
}
// Second best: closest (lower) timestamp
if (infoPtrs[1]->mTimestamp < mTimestamp) {
return infoSelectors[1];
} else if (infoPtrs[0]->mTimestamp < mTimestamp) {
return infoSelectors[0];
}
// Worst: closest (higher) timestamp
return infoSelectors[0];
/**
* The above cases should cover all the possibilities,
* and we get an 'empty' result only if the ring buffer
* was empty itself
*/
}
const nsecs_t mTimestamp;
}; // struct TimestampFinder
} // namespace anonymous
ZslProcessor::ZslProcessor(
sp<Camera2Client> client,
wp<CaptureSequencer> sequencer):
Thread(false),
mLatestClearedBufferTimestamp(0),
mState(RUNNING),
mClient(client),
mSequencer(sequencer),
mId(client->getCameraId()),
mZslStreamId(NO_STREAM),
mInputStreamId(NO_STREAM),
mFrameListHead(0),
mHasFocuser(false),
mInputBuffer(nullptr),
mProducer(nullptr),
mInputProducer(nullptr),
mInputProducerSlot(-1),
mBuffersToDetach(0) {
// Initialize buffer queue and frame list based on pipeline max depth.
size_t pipelineMaxDepth = kDefaultMaxPipelineDepth;
if (client != 0) {
sp<Camera3Device> device =
static_cast<Camera3Device*>(client->getCameraDevice().get());
if (device != 0) {
camera_metadata_ro_entry_t entry =
device->info().find(ANDROID_REQUEST_PIPELINE_MAX_DEPTH);
if (entry.count == 1) {
pipelineMaxDepth = entry.data.u8[0];
} else {
ALOGW("%s: Unable to find the android.request.pipelineMaxDepth,"
" use default pipeline max depth %d", __FUNCTION__,
kDefaultMaxPipelineDepth);
}
entry = device->info().find(ANDROID_LENS_INFO_MINIMUM_FOCUS_DISTANCE);
if (entry.count > 0 && entry.data.f[0] != 0.) {
mHasFocuser = true;
}
}
}
ALOGV("%s: Initialize buffer queue and frame list depth based on max pipeline depth (%zu)",
__FUNCTION__, pipelineMaxDepth);
// Need to keep buffer queue longer than metadata queue because sometimes buffer arrives
// earlier than metadata which causes the buffer corresponding to oldest metadata being
// removed.
mFrameListDepth = pipelineMaxDepth;
mBufferQueueDepth = mFrameListDepth + 1;
mZslQueue.insertAt(0, mBufferQueueDepth);
mFrameList.insertAt(0, mFrameListDepth);
sp<CaptureSequencer> captureSequencer = mSequencer.promote();
if (captureSequencer != 0) captureSequencer->setZslProcessor(this);
}
ZslProcessor::~ZslProcessor() {
ALOGV("%s: Exit", __FUNCTION__);
deleteStream();
}
void ZslProcessor::onResultAvailable(const CaptureResult &result) {
ATRACE_CALL();
ALOGV("%s:", __FUNCTION__);
Mutex::Autolock l(mInputMutex);
camera_metadata_ro_entry_t entry;
entry = result.mMetadata.find(ANDROID_SENSOR_TIMESTAMP);
nsecs_t timestamp = entry.data.i64[0];
if (entry.count == 0) {
ALOGE("%s: metadata doesn't have timestamp, skip this result", __FUNCTION__);
return;
}
entry = result.mMetadata.find(ANDROID_REQUEST_FRAME_COUNT);
if (entry.count == 0) {
ALOGE("%s: metadata doesn't have frame number, skip this result", __FUNCTION__);
return;
}
int32_t frameNumber = entry.data.i32[0];
ALOGVV("Got preview metadata for frame %d with timestamp %" PRId64, frameNumber, timestamp);
if (mState != RUNNING) return;
// Corresponding buffer has been cleared. No need to push into mFrameList
if (timestamp <= mLatestClearedBufferTimestamp) return;
mFrameList.editItemAt(mFrameListHead) = result.mMetadata;
mFrameListHead = (mFrameListHead + 1) % mFrameListDepth;
}
status_t ZslProcessor::updateStream(const Parameters ¶ms) {
ATRACE_CALL();
ALOGV("%s: Configuring ZSL streams", __FUNCTION__);
status_t res;
Mutex::Autolock l(mInputMutex);
sp<Camera2Client> client = mClient.promote();
if (client == 0) {
ALOGE("%s: Camera %d: Client does not exist", __FUNCTION__, mId);
return INVALID_OPERATION;
}
sp<Camera3Device> device =
static_cast<Camera3Device*>(client->getCameraDevice().get());
if (device == 0) {
ALOGE("%s: Camera %d: Device does not exist", __FUNCTION__, mId);
return INVALID_OPERATION;
}
if ((mZslStreamId != NO_STREAM) || (mInputStreamId != NO_STREAM)) {
// Check if stream parameters have to change
uint32_t currentWidth, currentHeight;
res = device->getStreamInfo(mZslStreamId,
¤tWidth, ¤tHeight, 0, 0);
if (res != OK) {
ALOGE("%s: Camera %d: Error querying capture output stream info: "
"%s (%d)", __FUNCTION__,
client->getCameraId(), strerror(-res), res);
return res;
}
if (currentWidth != (uint32_t)params.fastInfo.arrayWidth ||
currentHeight != (uint32_t)params.fastInfo.arrayHeight) {
if (mZslStreamId != NO_STREAM) {
ALOGV("%s: Camera %d: Deleting stream %d since the buffer "
"dimensions changed",
__FUNCTION__, client->getCameraId(), mZslStreamId);
res = device->deleteStream(mZslStreamId);
if (res == -EBUSY) {
ALOGV("%s: Camera %d: Device is busy, call updateStream again "
" after it becomes idle", __FUNCTION__, mId);
return res;
} else if(res != OK) {
ALOGE("%s: Camera %d: Unable to delete old output stream "
"for ZSL: %s (%d)", __FUNCTION__,
client->getCameraId(), strerror(-res), res);
return res;
}
mZslStreamId = NO_STREAM;
}
if (mInputStreamId != NO_STREAM) {
ALOGV("%s: Camera %d: Deleting stream %d since the buffer "
"dimensions changed",
__FUNCTION__, client->getCameraId(), mInputStreamId);
res = device->deleteStream(mInputStreamId);
if (res == -EBUSY) {
ALOGV("%s: Camera %d: Device is busy, call updateStream again "
" after it becomes idle", __FUNCTION__, mId);
return res;
} else if(res != OK) {
ALOGE("%s: Camera %d: Unable to delete old output stream "
"for ZSL: %s (%d)", __FUNCTION__,
client->getCameraId(), strerror(-res), res);
return res;
}
mInputStreamId = NO_STREAM;
}
if (nullptr != mInputProducer.get()) {
mInputProducer->disconnect(NATIVE_WINDOW_API_CPU);
mInputProducer.clear();
}
}
}
if (mInputStreamId == NO_STREAM) {
res = device->createInputStream(params.fastInfo.arrayWidth,
params.fastInfo.arrayHeight, HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED,
&mInputStreamId);
if (res != OK) {
ALOGE("%s: Camera %d: Can't create input stream: "
"%s (%d)", __FUNCTION__, client->getCameraId(),
strerror(-res), res);
return res;
}
}
if (mZslStreamId == NO_STREAM) {
// Create stream for HAL production
// TODO: Sort out better way to select resolution for ZSL
sp<IGraphicBufferProducer> producer;
sp<IGraphicBufferConsumer> consumer;
BufferQueue::createBufferQueue(&producer, &consumer);
mProducer = new RingBufferConsumer(consumer, GRALLOC_USAGE_HW_CAMERA_ZSL,
mBufferQueueDepth);
mProducer->setName(String8("Camera2-ZslRingBufferConsumer"));
sp<Surface> outSurface = new Surface(producer);
res = device->createStream(outSurface, params.fastInfo.arrayWidth,
params.fastInfo.arrayHeight, HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED,
HAL_DATASPACE_UNKNOWN, CAMERA3_STREAM_ROTATION_0, &mZslStreamId);
if (res != OK) {
ALOGE("%s: Camera %d: Can't create ZSL stream: "
"%s (%d)", __FUNCTION__, client->getCameraId(),
strerror(-res), res);
return res;
}
}
client->registerFrameListener(Camera2Client::kPreviewRequestIdStart,
Camera2Client::kPreviewRequestIdEnd,
this,
/*sendPartials*/false);
return OK;
}
status_t ZslProcessor::deleteStream() {
ATRACE_CALL();
status_t res;
sp<Camera3Device> device = nullptr;
sp<Camera2Client> client = nullptr;
Mutex::Autolock l(mInputMutex);
if ((mZslStreamId != NO_STREAM) || (mInputStreamId != NO_STREAM)) {
client = mClient.promote();
if (client == 0) {
ALOGE("%s: Camera %d: Client does not exist", __FUNCTION__, mId);
return INVALID_OPERATION;
}
device =
reinterpret_cast<Camera3Device*>(client->getCameraDevice().get());
if (device == 0) {
ALOGE("%s: Camera %d: Device does not exist", __FUNCTION__, mId);
return INVALID_OPERATION;
}
}
if (mZslStreamId != NO_STREAM) {
res = device->deleteStream(mZslStreamId);
if (res != OK) {
ALOGE("%s: Camera %d: Cannot delete ZSL output stream %d: "
"%s (%d)", __FUNCTION__, client->getCameraId(),
mZslStreamId, strerror(-res), res);
return res;
}
mZslStreamId = NO_STREAM;
}
if (mInputStreamId != NO_STREAM) {
res = device->deleteStream(mInputStreamId);
if (res != OK) {
ALOGE("%s: Camera %d: Cannot delete input stream %d: "
"%s (%d)", __FUNCTION__, client->getCameraId(),
mInputStreamId, strerror(-res), res);
return res;
}
mInputStreamId = NO_STREAM;
}
if (nullptr != mInputProducer.get()) {
mInputProducer->disconnect(NATIVE_WINDOW_API_CPU);
mInputProducer.clear();
}
return OK;
}
int ZslProcessor::getStreamId() const {
Mutex::Autolock l(mInputMutex);
return mZslStreamId;
}
status_t ZslProcessor::updateRequestWithDefaultStillRequest(CameraMetadata &request) const {
sp<Camera2Client> client = mClient.promote();
if (client == 0) {
ALOGE("%s: Camera %d: Client does not exist", __FUNCTION__, mId);
return INVALID_OPERATION;
}
sp<Camera3Device> device =
static_cast<Camera3Device*>(client->getCameraDevice().get());
if (device == 0) {
ALOGE("%s: Camera %d: Device does not exist", __FUNCTION__, mId);
return INVALID_OPERATION;
}
CameraMetadata stillTemplate;
device->createDefaultRequest(CAMERA3_TEMPLATE_STILL_CAPTURE, &stillTemplate);
// Find some of the post-processing tags, and assign the value from template to the request.
// Only check the aberration mode and noise reduction mode for now, as they are very important
// for image quality.
uint32_t postProcessingTags[] = {
ANDROID_NOISE_REDUCTION_MODE,
ANDROID_COLOR_CORRECTION_ABERRATION_MODE,
ANDROID_COLOR_CORRECTION_MODE,
ANDROID_TONEMAP_MODE,
ANDROID_SHADING_MODE,
ANDROID_HOT_PIXEL_MODE,
ANDROID_EDGE_MODE
};
camera_metadata_entry_t entry;
for (size_t i = 0; i < sizeof(postProcessingTags) / sizeof(uint32_t); i++) {
entry = stillTemplate.find(postProcessingTags[i]);
if (entry.count > 0) {
request.update(postProcessingTags[i], entry.data.u8, 1);
}
}
return OK;
}
void ZslProcessor::notifyInputReleased() {
Mutex::Autolock l(mInputMutex);
mBuffersToDetach++;
mBuffersToDetachSignal.signal();
}
void ZslProcessor::doNotifyInputReleasedLocked() {
assert(nullptr != mInputBuffer.get());
assert(nullptr != mInputProducer.get());
sp<GraphicBuffer> gb;
sp<Fence> fence;
auto rc = mInputProducer->detachNextBuffer(&gb, &fence);
if (NO_ERROR != rc) {
ALOGE("%s: Failed to detach buffer from input producer: %d",
__FUNCTION__, rc);
return;
}
BufferItem &item = mInputBuffer->getBufferItem();
sp<GraphicBuffer> inputBuffer = item.mGraphicBuffer;
if (gb->handle != inputBuffer->handle) {
ALOGE("%s: Input mismatch, expected buffer %p received %p", __FUNCTION__,
inputBuffer->handle, gb->handle);
return;
}
mInputBuffer.clear();
ALOGV("%s: Memory optimization, clearing ZSL queue",
__FUNCTION__);
clearZslResultQueueLocked();
// Required so we accept more ZSL requests
mState = RUNNING;
}
void ZslProcessor::InputProducerListener::onBufferReleased() {
sp<ZslProcessor> parent = mParent.promote();
if (nullptr != parent.get()) {
parent->notifyInputReleased();
}
}
status_t ZslProcessor::pushToReprocess(int32_t requestId) {
ALOGV("%s: Send in reprocess request with id %d",
__FUNCTION__, requestId);
Mutex::Autolock l(mInputMutex);
status_t res;
sp<Camera2Client> client = mClient.promote();
if (client == 0) {
ALOGE("%s: Camera %d: Client does not exist", __FUNCTION__, mId);
return INVALID_OPERATION;
}
IF_ALOGV() {
dumpZslQueue(-1);
}
size_t metadataIdx;
nsecs_t candidateTimestamp = getCandidateTimestampLocked(&metadataIdx);
if (candidateTimestamp == -1) {
ALOGV("%s: Could not find good candidate for ZSL reprocessing",
__FUNCTION__);
return NOT_ENOUGH_DATA;
} else {
ALOGV("%s: Found good ZSL candidate idx: %u",
__FUNCTION__, (unsigned int) metadataIdx);
}
if (nullptr == mInputProducer.get()) {
res = client->getCameraDevice()->getInputBufferProducer(
&mInputProducer);
if (res != OK) {
ALOGE("%s: Camera %d: Unable to retrieve input producer: "
"%s (%d)", __FUNCTION__, client->getCameraId(),
strerror(-res), res);
return res;
}
IGraphicBufferProducer::QueueBufferOutput output;
res = mInputProducer->connect(new InputProducerListener(this),
NATIVE_WINDOW_API_CPU, false, &output);
if (res != OK) {
ALOGE("%s: Camera %d: Unable to connect to input producer: "
"%s (%d)", __FUNCTION__, client->getCameraId(),
strerror(-res), res);
return res;
}
}
res = enqueueInputBufferByTimestamp(candidateTimestamp,
/*actualTimestamp*/NULL);
if (res == NO_BUFFER_AVAILABLE) {
ALOGV("%s: No ZSL buffers yet", __FUNCTION__);
return NOT_ENOUGH_DATA;
} else if (res != OK) {
ALOGE("%s: Unable to push buffer for reprocessing: %s (%d)",
__FUNCTION__, strerror(-res), res);
return res;
}
{
CameraMetadata request = mFrameList[metadataIdx];
// Verify that the frame is reasonable for reprocessing
camera_metadata_entry_t entry;
entry = request.find(ANDROID_CONTROL_AE_STATE);
if (entry.count == 0) {
ALOGE("%s: ZSL queue frame has no AE state field!",
__FUNCTION__);
return BAD_VALUE;
}
if (entry.data.u8[0] != ANDROID_CONTROL_AE_STATE_CONVERGED &&
entry.data.u8[0] != ANDROID_CONTROL_AE_STATE_LOCKED) {
ALOGV("%s: ZSL queue frame AE state is %d, need full capture",
__FUNCTION__, entry.data.u8[0]);
return NOT_ENOUGH_DATA;
}
uint8_t requestType = ANDROID_REQUEST_TYPE_REPROCESS;
res = request.update(ANDROID_REQUEST_TYPE,
&requestType, 1);
if (res != OK) {
ALOGE("%s: Unable to update request type",
__FUNCTION__);
return INVALID_OPERATION;
}
int32_t inputStreams[1] =
{ mInputStreamId };
res = request.update(ANDROID_REQUEST_INPUT_STREAMS,
inputStreams, 1);
if (res != OK) {
ALOGE("%s: Unable to update request input streams",
__FUNCTION__);
return INVALID_OPERATION;
}
uint8_t captureIntent =
static_cast<uint8_t>(ANDROID_CONTROL_CAPTURE_INTENT_STILL_CAPTURE);
res = request.update(ANDROID_CONTROL_CAPTURE_INTENT,
&captureIntent, 1);
if (res != OK ) {
ALOGE("%s: Unable to update request capture intent",
__FUNCTION__);
return INVALID_OPERATION;
}
// TODO: Shouldn't we also update the latest preview frame?
int32_t outputStreams[1] =
{ client->getCaptureStreamId() };
res = request.update(ANDROID_REQUEST_OUTPUT_STREAMS,
outputStreams, 1);
if (res != OK) {
ALOGE("%s: Unable to update request output streams",
__FUNCTION__);
return INVALID_OPERATION;
}
res = request.update(ANDROID_REQUEST_ID,
&requestId, 1);
if (res != OK ) {
ALOGE("%s: Unable to update frame to a reprocess request",
__FUNCTION__);
return INVALID_OPERATION;
}
res = client->stopStream();
if (res != OK) {
ALOGE("%s: Camera %d: Unable to stop preview for ZSL capture: "
"%s (%d)",
__FUNCTION__, client->getCameraId(), strerror(-res), res);
return INVALID_OPERATION;
}
// Update JPEG settings
{
SharedParameters::Lock l(client->getParameters());
res = l.mParameters.updateRequestJpeg(&request);
if (res != OK) {
ALOGE("%s: Camera %d: Unable to update JPEG entries of ZSL "
"capture request: %s (%d)", __FUNCTION__,
client->getCameraId(),
strerror(-res), res);
return res;
}
}
// Update post-processing settings
res = updateRequestWithDefaultStillRequest(request);
if (res != OK) {
ALOGW("%s: Unable to update post-processing tags, the reprocessed image quality "
"may be compromised", __FUNCTION__);
}
mLatestCapturedRequest = request;
res = client->getCameraDevice()->capture(request);
if (res != OK ) {
ALOGE("%s: Unable to send ZSL reprocess request to capture: %s"
" (%d)", __FUNCTION__, strerror(-res), res);
return res;
}
mState = LOCKED;
}
return OK;
}
status_t ZslProcessor::enqueueInputBufferByTimestamp(
nsecs_t timestamp,
nsecs_t* actualTimestamp) {
TimestampFinder timestampFinder = TimestampFinder(timestamp);
mInputBuffer = mProducer->pinSelectedBuffer(timestampFinder,
/*waitForFence*/false);
if (nullptr == mInputBuffer.get()) {
ALOGE("%s: No ZSL buffers were available yet", __FUNCTION__);
return NO_BUFFER_AVAILABLE;
}
nsecs_t actual = mInputBuffer->getBufferItem().mTimestamp;
if (actual != timestamp) {
// TODO: This is problematic, the metadata queue timestamp should
// usually have a corresponding ZSL buffer with the same timestamp.
// If this is not the case, then it is possible that we will use
// a ZSL buffer from a different request, which can result in
// side effects during the reprocess pass.
ALOGW("%s: ZSL buffer candidate search didn't find an exact match --"
" requested timestamp = %" PRId64 ", actual timestamp = %" PRId64,
__FUNCTION__, timestamp, actual);
}
if (nullptr != actualTimestamp) {
*actualTimestamp = actual;
}
BufferItem &item = mInputBuffer->getBufferItem();
auto rc = mInputProducer->attachBuffer(&mInputProducerSlot,
item.mGraphicBuffer);
if (OK != rc) {
ALOGE("%s: Failed to attach input ZSL buffer to producer: %d",
__FUNCTION__, rc);
return rc;
}
IGraphicBufferProducer::QueueBufferOutput output;
IGraphicBufferProducer::QueueBufferInput input(item.mTimestamp,
item.mIsAutoTimestamp, item.mDataSpace, item.mCrop,
item.mScalingMode, item.mTransform, item.mFence);
rc = mInputProducer->queueBuffer(mInputProducerSlot, input, &output);
if (OK != rc) {
ALOGE("%s: Failed to queue ZSL buffer to producer: %d",
__FUNCTION__, rc);
return rc;
}
return rc;
}
status_t ZslProcessor::clearInputRingBufferLocked(nsecs_t* latestTimestamp) {
if (nullptr != latestTimestamp) {
*latestTimestamp = mProducer->getLatestTimestamp();
}
mInputBuffer.clear();
return mProducer->clear();
}
status_t ZslProcessor::clearZslQueue() {
Mutex::Autolock l(mInputMutex);
// If in middle of capture, can't clear out queue
if (mState == LOCKED) return OK;
return clearZslQueueLocked();
}
status_t ZslProcessor::clearZslQueueLocked() {
if (NO_STREAM != mZslStreamId) {
// clear result metadata list first.
clearZslResultQueueLocked();
return clearInputRingBufferLocked(&mLatestClearedBufferTimestamp);
}
return OK;
}
void ZslProcessor::clearZslResultQueueLocked() {
mFrameList.clear();
mFrameListHead = 0;
mFrameList.insertAt(0, mFrameListDepth);
}
void ZslProcessor::dump(int fd, const Vector<String16>& /*args*/) const {
Mutex::Autolock l(mInputMutex);
if (!mLatestCapturedRequest.isEmpty()) {
String8 result(" Latest ZSL capture request:\n");
write(fd, result.string(), result.size());
mLatestCapturedRequest.dump(fd, 2, 6);
} else {
String8 result(" Latest ZSL capture request: none yet\n");
write(fd, result.string(), result.size());
}
dumpZslQueue(fd);
}
bool ZslProcessor::threadLoop() {
Mutex::Autolock l(mInputMutex);
if (mBuffersToDetach == 0) {
status_t res = mBuffersToDetachSignal.waitRelative(mInputMutex, kWaitDuration);
if (res == TIMED_OUT) return true;
}
while (mBuffersToDetach > 0) {
doNotifyInputReleasedLocked();
mBuffersToDetach--;
}
return true;
}
void ZslProcessor::dumpZslQueue(int fd) const {
String8 header("ZSL queue contents:");
String8 indent(" ");
ALOGV("%s", header.string());
if (fd != -1) {
header = indent + header + "\n";
write(fd, header.string(), header.size());
}
for (size_t i = 0; i < mZslQueue.size(); i++) {
const ZslPair &queueEntry = mZslQueue[i];
nsecs_t bufferTimestamp = queueEntry.buffer.mTimestamp;
camera_metadata_ro_entry_t entry;
nsecs_t frameTimestamp = 0;
int frameAeState = -1;
if (!queueEntry.frame.isEmpty()) {
entry = queueEntry.frame.find(ANDROID_SENSOR_TIMESTAMP);
if (entry.count > 0) frameTimestamp = entry.data.i64[0];
entry = queueEntry.frame.find(ANDROID_CONTROL_AE_STATE);
if (entry.count > 0) frameAeState = entry.data.u8[0];
}
String8 result =
String8::format(" %zu: b: %" PRId64 "\tf: %" PRId64 ", AE state: %d", i,
bufferTimestamp, frameTimestamp, frameAeState);
ALOGV("%s", result.string());
if (fd != -1) {
result = indent + result + "\n";
write(fd, result.string(), result.size());
}
}
}
bool ZslProcessor::isFixedFocusMode(uint8_t afMode) const {
switch (afMode) {
case ANDROID_CONTROL_AF_MODE_AUTO:
case ANDROID_CONTROL_AF_MODE_CONTINUOUS_VIDEO:
case ANDROID_CONTROL_AF_MODE_CONTINUOUS_PICTURE:
case ANDROID_CONTROL_AF_MODE_MACRO:
return false;
break;
case ANDROID_CONTROL_AF_MODE_OFF:
case ANDROID_CONTROL_AF_MODE_EDOF:
return true;
default:
ALOGE("%s: unknown focus mode %d", __FUNCTION__, afMode);
return false;
}
}
nsecs_t ZslProcessor::getCandidateTimestampLocked(size_t* metadataIdx) const {
/**
* Find the smallest timestamp we know about so far
* - ensure that aeState is either converged or locked
*/
size_t idx = 0;
nsecs_t minTimestamp = -1;
size_t emptyCount = mFrameList.size();
for (size_t j = 0; j < mFrameList.size(); j++) {
const CameraMetadata &frame = mFrameList[j];
if (!frame.isEmpty()) {
emptyCount--;
camera_metadata_ro_entry_t entry;
entry = frame.find(ANDROID_SENSOR_TIMESTAMP);
if (entry.count == 0) {
ALOGE("%s: Can't find timestamp in frame!",
__FUNCTION__);
continue;
}
nsecs_t frameTimestamp = entry.data.i64[0];
if (minTimestamp > frameTimestamp || minTimestamp == -1) {
entry = frame.find(ANDROID_CONTROL_AE_STATE);
if (entry.count == 0) {
/**
* This is most likely a HAL bug. The aeState field is
* mandatory, so it should always be in a metadata packet.
*/
ALOGW("%s: ZSL queue frame has no AE state field!",
__FUNCTION__);
continue;
}
if (entry.data.u8[0] != ANDROID_CONTROL_AE_STATE_CONVERGED &&
entry.data.u8[0] != ANDROID_CONTROL_AE_STATE_LOCKED) {
ALOGVV("%s: ZSL queue frame AE state is %d, need "
"full capture", __FUNCTION__, entry.data.u8[0]);
continue;
}
entry = frame.find(ANDROID_CONTROL_AF_MODE);
if (entry.count == 0) {
ALOGW("%s: ZSL queue frame has no AF mode field!",
__FUNCTION__);
continue;
}
uint8_t afMode = entry.data.u8[0];
if (afMode == ANDROID_CONTROL_AF_MODE_OFF) {
// Skip all the ZSL buffer for manual AF mode, as we don't really
// know the af state.
continue;
}
// Check AF state if device has focuser and focus mode isn't fixed
if (mHasFocuser && !isFixedFocusMode(afMode)) {
// Make sure the candidate frame has good focus.
entry = frame.find(ANDROID_CONTROL_AF_STATE);
if (entry.count == 0) {
ALOGW("%s: ZSL queue frame has no AF state field!",
__FUNCTION__);
continue;
}
uint8_t afState = entry.data.u8[0];
if (afState != ANDROID_CONTROL_AF_STATE_PASSIVE_FOCUSED &&
afState != ANDROID_CONTROL_AF_STATE_FOCUSED_LOCKED &&
afState != ANDROID_CONTROL_AF_STATE_NOT_FOCUSED_LOCKED) {
ALOGVV("%s: ZSL queue frame AF state is %d is not good for capture, skip it",
__FUNCTION__, afState);
continue;
}
}
minTimestamp = frameTimestamp;
idx = j;
}
ALOGVV("%s: Saw timestamp %" PRId64, __FUNCTION__, frameTimestamp);
}
}
if (emptyCount == mFrameList.size()) {
/**
* This could be mildly bad and means our ZSL was triggered before
* there were any frames yet received by the camera framework.
*
* This is a fairly corner case which can happen under:
* + a user presses the shutter button real fast when the camera starts
* (startPreview followed immediately by takePicture).
* + burst capture case (hitting shutter button as fast possible)
*
* If this happens in steady case (preview running for a while, call
* a single takePicture) then this might be a fwk bug.
*/
ALOGW("%s: ZSL queue has no metadata frames", __FUNCTION__);
}
ALOGV("%s: Candidate timestamp %" PRId64 " (idx %zu), empty frames: %zu",
__FUNCTION__, minTimestamp, idx, emptyCount);
if (metadataIdx) {
*metadataIdx = idx;
}
return minTimestamp;
}
}; // namespace camera2
}; // namespace android