PARP Research Group

Universidad de Murcia

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src/qvio/qvmplayerreader.h Go to the documentation of this file. /* * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012. PARP Research Group. * <http://perception.inf.um.es> * University of Murcia, Spain. * * This file is part of the QVision library. * * QVision is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation, version 3 of the License. * * QVision is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with QVision. If not, see <http://www.gnu.org/licenses/>. */ #ifndef QVMPLAYERREADER_H #define QVMPLAYERREADER_H #include <QVBaseReader> #include <QFile> #include <QProcess> #include <QString> #include <QThread> #include <QUrl> #include <QNamedPipe> #include <QVImage> #ifndef DOXYGEN_IGNORE_THIS // Auxiliary QVCheckOKMPlayer Class: // This is an internal convenience thread used only to unblock the open function // when it is waiting for mplayer to write in the fifo, in the case when // mplayer aborted when starting (due to bad URL, or wrong file format, for // example). class QVCheckOKMPlayer: public QThread { friend class QVMPlayerReader; // Only QVMPlayerReader will have access to this class. Q_OBJECT private: QVCheckOKMPlayer(QFile & fifo_file,int max_time_ms_to_wait_for_open); QFile & _fifo_file; int _max_time_ms_to_wait_for_open; void run(); private slots: void writeErrorInFifo(); }; #endif class QVMPlayerReader : public QVBaseReader, public QObject { public: QVMPlayerReader(): open_options(QVVideoReader::Default), path(QString()), schema(QString()), camera_opened(FALSE), frames_grabbed(0), live_camera(FALSE), imgY(QVImage<uChar>()), imgU(QVImage<uChar>()), imgV(QVImage<uChar>()), cols(0), rows(0), fps(0), time_length(0), time_pos(0), end_of_video(FALSE) { }; ~QVMPlayerReader() { if (camera_opened) close(); }; bool open( const QString & url_string, unsigned int & suggested_cols, unsigned int & suggested_rows, unsigned int & suggested_fps, QVVideoReader::OpenOptions & suggested_opts, QVVideoReader::TSourceMode & source_mode); int getLength() { return fps*time_length; }; int getPos() { return fps*time_pos; }; bool grab(QVImage<uChar> &imgY, QVImage<uChar> &imgU, QVImage<uChar> &imgV); bool close(); bool seek(int pos); private: QVVideoReader::OpenOptions open_options; QStringList mplayer_args; QProcess *mplayer; QString path, schema; QNamedPipe *namedPipe; QFile fifoInput; bool camera_opened; unsigned int frames_grabbed; bool live_camera; QVImage<uChar> imgY, imgU, imgV; int cols, rows, fps; double time_length, time_pos; bool end_of_video; void initMPlayerArgs(QString urlString, unsigned int suggested_cols, unsigned int suggested_rows); int interpretMPlayerOutput(); bool performGrab(); }; #endif // QVMPLAYERREADER_H

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QVision framework. PARP research group. Copyright © 2007, 2008, 2009, 2010, 2011.