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/*
* 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-FrameProcessorBase"
#define ATRACE_TAG ATRACE_TAG_CAMERA
//#define LOG_NDEBUG 0
#include <utils/Log.h>
#include <utils/Trace.h>
#include "common/FrameProcessorBase.h"
#include "common/CameraDeviceBase.h"
namespace android {
namespace camera2 {
FrameProcessorBase::FrameProcessorBase(wp<CameraDeviceBase> device) :
Thread(/*canCallJava*/false),
mDevice(device) {
}
FrameProcessorBase::~FrameProcessorBase() {
ALOGV("%s: Exit", __FUNCTION__);
}
status_t FrameProcessorBase::registerListener(int32_t minId,
int32_t maxId, wp<FilteredListener> listener, bool quirkSendPartials) {
Mutex::Autolock l(mInputMutex);
ALOGV("%s: Registering listener for frame id range %d - %d",
__FUNCTION__, minId, maxId);
RangeListener rListener = { minId, maxId, listener, quirkSendPartials };
mRangeListeners.push_back(rListener);
return OK;
}
status_t FrameProcessorBase::removeListener(int32_t minId,
int32_t maxId,
wp<FilteredListener> listener) {
Mutex::Autolock l(mInputMutex);
List<RangeListener>::iterator item = mRangeListeners.begin();
while (item != mRangeListeners.end()) {
if (item->minId == minId &&
item->maxId == maxId &&
item->listener == listener) {
item = mRangeListeners.erase(item);
} else {
item++;
}
}
return OK;
}
void FrameProcessorBase::dump(int fd, const Vector<String16>& /*args*/) {
String8 result(" Latest received frame:\n");
write(fd, result.string(), result.size());
CameraMetadata lastFrame;
{
// Don't race while dumping metadata
Mutex::Autolock al(mLastFrameMutex);
lastFrame = CameraMetadata(mLastFrame);
}
lastFrame.dump(fd, 2, 6);
}
bool FrameProcessorBase::threadLoop() {
status_t res;
sp<CameraDeviceBase> device;
{
device = mDevice.promote();
if (device == 0) return false;
}
res = device->waitForNextFrame(kWaitDuration);
if (res == OK) {
processNewFrames(device);
} else if (res != TIMED_OUT) {
ALOGE("FrameProcessorBase: Error waiting for new "
"frames: %s (%d)", strerror(-res), res);
}
return true;
}
void FrameProcessorBase::processNewFrames(const sp<CameraDeviceBase> &device) {
status_t res;
ATRACE_CALL();
CameraMetadata frame;
ALOGV("%s: Camera %d: Process new frames", __FUNCTION__, device->getId());
while ( (res = device->getNextFrame(&frame)) == OK) {
camera_metadata_entry_t entry;
entry = frame.find(ANDROID_REQUEST_FRAME_COUNT);
if (entry.count == 0) {
ALOGE("%s: Camera %d: Error reading frame number",
__FUNCTION__, device->getId());
break;
}
ATRACE_INT("cam2_frame", entry.data.i32[0]);
if (!processSingleFrame(frame, device)) {
break;
}
if (!frame.isEmpty()) {
Mutex::Autolock al(mLastFrameMutex);
mLastFrame.acquire(frame);
}
}
if (res != NOT_ENOUGH_DATA) {
ALOGE("%s: Camera %d: Error getting next frame: %s (%d)",
__FUNCTION__, device->getId(), strerror(-res), res);
return;
}
return;
}
bool FrameProcessorBase::processSingleFrame(CameraMetadata &frame,
const sp<CameraDeviceBase> &device) {
ALOGV("%s: Camera %d: Process single frame (is empty? %d)",
__FUNCTION__, device->getId(), frame.isEmpty());
return processListeners(frame, device) == OK;
}
status_t FrameProcessorBase::processListeners(const CameraMetadata &frame,
const sp<CameraDeviceBase> &device) {
ATRACE_CALL();
camera_metadata_ro_entry_t entry;
// Quirks: Don't deliver partial results to listeners that don't want them
bool quirkIsPartial = false;
entry = frame.find(ANDROID_QUIRKS_PARTIAL_RESULT);
if (entry.count != 0 &&
entry.data.u8[0] == ANDROID_QUIRKS_PARTIAL_RESULT_PARTIAL) {
ALOGV("%s: Camera %d: Not forwarding partial result to listeners",
__FUNCTION__, device->getId());
quirkIsPartial = true;
}
entry = frame.find(ANDROID_REQUEST_ID);
if (entry.count == 0) {
ALOGE("%s: Camera %d: Error reading frame id",
__FUNCTION__, device->getId());
return BAD_VALUE;
}
int32_t requestId = entry.data.i32[0];
List<sp<FilteredListener> > listeners;
{
Mutex::Autolock l(mInputMutex);
List<RangeListener>::iterator item = mRangeListeners.begin();
while (item != mRangeListeners.end()) {
if (requestId >= item->minId &&
requestId < item->maxId &&
(!quirkIsPartial || item->quirkSendPartials) ) {
sp<FilteredListener> listener = item->listener.promote();
if (listener == 0) {
item = mRangeListeners.erase(item);
continue;
} else {
listeners.push_back(listener);
}
}
item++;
}
}
ALOGV("Got %d range listeners out of %d", listeners.size(), mRangeListeners.size());
List<sp<FilteredListener> >::iterator item = listeners.begin();
for (; item != listeners.end(); item++) {
(*item)->onFrameAvailable(requestId, frame);
}
return OK;
}
}; // namespace camera2
}; // namespace android
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