/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright 2012 The MITRE Corporation                                      *
 *                                                                           *
 * 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 <opencv2/highgui/highgui.hpp>
#include <openbr/core/opencvutils.h>
#include <openbr/plugins/openbr_internal.h>

using namespace cv;

namespace br
{

/*!
 * \ingroup transforms
 * \brief Read images
 * \author Josh Klontz \cite jklontz
 */
class ReadTransform : public UntrainableMetaTransform
{
    Q_OBJECT
    Q_ENUMS(Mode)
    Q_PROPERTY(Mode mode READ get_mode WRITE set_mode RESET reset_mode)

public:
    enum Mode
    {
        Unchanged = IMREAD_UNCHANGED,
        Grayscale = IMREAD_GRAYSCALE,
        Color     = IMREAD_COLOR,
        AnyDepth  = IMREAD_ANYDEPTH,
        AnyColor  = IMREAD_ANYCOLOR
    };

private:
    BR_PROPERTY(Mode, mode, Color)

    void project(const Template &src, Template &dst) const
    {
        dst.file = src.file;
        if (Globals->verbose)
            qDebug("Opening %s", qPrintable(src.file.flat()));

        if (src.empty()) {
            const Mat img = imread(src.file.resolved().toStdString(), mode);
            if (img.data) dst.append(img);
            else          dst.file.fte = true;
        } else {
            foreach (const Mat &m, src) {
                if (((m.rows > 1) && (m.cols > 1)) || (m.type() != CV_8UC1))
                    dst += m;
                else {
                    const Mat img = imdecode(m, mode);
                    if (img.data) dst.append(img);
                    else          dst.file.fte = true;
                }
            }
        }
        if (dst.file.fte)
            qWarning("Error opening %s", qPrintable(src.file.flat()));
    }
};

BR_REGISTER(Transform, ReadTransform)

} // namespace br

#include "io/read.moc"
