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/**
* Copyright (c) 2015 Samsung Electronics Co., Ltd All Rights Reserved
*
* 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.
*/
#include "FaceTrackingModel.h"
#include "mv_common.h"
#include "mv_private.h"
#include <unistd.h>
namespace MediaVision
{
namespace Face
{
FaceTrackingResults::FaceTrackingResults() : mIsTracked(false), mConfidence(0.f)
{
; /* NULL */
}
FaceTrackingModel::FaceTrackingModel() : m_canTrack(false), m_tracker(new cv::FaceTracker())
{
; /* NULL */
}
FaceTrackingModel::FaceTrackingModel(const FaceTrackingModel &origin)
: m_canTrack(origin.m_canTrack), m_tracker(new cv::FaceTracker())
{
if (!origin.m_tracker.empty())
origin.m_tracker->copyTo(*(m_tracker.get()));
}
FaceTrackingModel &FaceTrackingModel::operator=(const FaceTrackingModel ©)
{
if (this != ©) {
m_canTrack = copy.m_canTrack;
m_tracker = cv::Ptr<cv::FaceTracker>(new cv::FaceTracker());
if (!copy.m_tracker.empty())
copy.m_tracker->copyTo(*(m_tracker.get()));
}
return *this;
}
FaceTrackingModel::~FaceTrackingModel()
{
; /* NULL */
}
int FaceTrackingModel::save(const std::string &fileName)
{
if (m_tracker.empty()) {
LOGE("Can't save tracking model. No tracking algorithm is used");
return MEDIA_VISION_ERROR_INVALID_OPERATION;
}
std::string filePath;
filePath = fileName;
try {
std::string prefixPath = filePath.substr(0, filePath.find_last_of('/'));
LOGD("prefixPath: %s", prefixPath.c_str());
/* check the directory is available */
if (access(prefixPath.c_str(), F_OK)) {
LOGE("Can't save tracking model. Path[%s] doesn't existed.", prefixPath.c_str());
return MEDIA_VISION_ERROR_INVALID_PATH;
}
} catch (const std::out_of_range &e) {
LOGE("Can't save tracking model. Path[%s] is invalid.", filePath.c_str());
return MEDIA_VISION_ERROR_INVALID_PATH;
}
cv::FileStorage storage(filePath, cv::FileStorage::WRITE);
if (!storage.isOpened()) {
LOGE("Can't save tracking model. Write to file permission denied.");
return MEDIA_VISION_ERROR_PERMISSION_DENIED;
}
LOGD("Storing tracking model to the file started.");
storage << "canTrack" << (m_canTrack ? 1 : 0);
m_tracker->write(storage);
LOGD("Storing tracking model to the file finished.");
storage.release();
return MEDIA_VISION_ERROR_NONE;
}
int FaceTrackingModel::load(const std::string &fileName)
{
std::string filePath;
filePath = fileName;
if (access(filePath.c_str(), F_OK)) {
LOGE("Can't load face tracking model. File[%s] doesn't existed.", filePath.c_str());
return MEDIA_VISION_ERROR_INVALID_PATH;
}
cv::FileStorage storage(filePath, cv::FileStorage::READ);
if (!storage.isOpened()) {
LOGE("Can't load tracking model. Read from file permission denied.");
return MEDIA_VISION_ERROR_PERMISSION_DENIED;
}
int canTrack = 0;
storage["canTrack"] >> canTrack;
m_canTrack = (0 != canTrack);
m_tracker->read(storage);
LOGD("Loading tracking model from file.");
storage.release();
return MEDIA_VISION_ERROR_NONE;
}
int FaceTrackingModel::prepare(const cv::Mat &image)
{
if (m_tracker.empty()) {
LOGE("Failed to prepare tracking model. No tracking algorithm "
"is available.");
return MEDIA_VISION_ERROR_INVALID_OPERATION;
}
cv::Rect_<float> lastBoundingBox;
if (!m_tracker->isInited()) {
lastBoundingBox.x = 0;
lastBoundingBox.y = 0;
lastBoundingBox.width = image.cols;
lastBoundingBox.height = image.rows;
} else {
lastBoundingBox = m_tracker->getLastBoundingBox();
}
return prepare(image, lastBoundingBox);
}
int FaceTrackingModel::prepare(const cv::Mat &image, const cv::Rect_<float> &boundingBox)
{
if (m_tracker.empty()) {
LOGE("Failed to prepare tracking model. No tracking algorithm "
"is available.");
return MEDIA_VISION_ERROR_INVALID_OPERATION;
}
if (!m_tracker->initImpl(image, boundingBox)) {
LOGE("Failed to prepare tracking model.");
return MEDIA_VISION_ERROR_INVALID_OPERATION;
}
m_canTrack = true;
return MEDIA_VISION_ERROR_NONE;
}
int FaceTrackingModel::track(const cv::Mat &image, FaceTrackingResults &results)
{
if (!m_tracker.empty() && m_canTrack) {
cv::Rect2d faceLocation = (cv::Rect2d) results.mFaceLocation;
results.mIsTracked = m_tracker->updateImpl(image, faceLocation);
results.mConfidence = m_tracker->getLastConfidence();
results.mFaceLocation = (cv::Rect2f) faceLocation;
} else {
LOGE("Attempt to track face with not prepared model");
return MEDIA_VISION_ERROR_INVALID_OPERATION;
}
return MEDIA_VISION_ERROR_NONE;
}
} /* Face */
} /* MediaVision */
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