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00025 #ifndef MPLAYERCAMERA_H
00026 #define MPLAYERCAMERA_H
00027
00028 #include <QObject>
00029 #include <QProcess>
00030 #include <QString>
00031 #include <QList>
00032 #include <QUrl>
00033 #include <QThread>
00034 #include <QMutex>
00035 #include <QWaitCondition>
00036 #include <QFile>
00037 #include <QTimer>
00038 #include <QQueue>
00039
00040 #include <QVCamera>
00041 #include <qvutils/qnamedpipe.h>
00042
00043 #ifndef DOXYGEN_IGNORE_THIS
00044
00045
00046
00047
00048
00049
00050 class QVCheckOKMplayerCamera: public QThread
00051 {
00052 Q_OBJECT
00053 public:
00054 QVCheckOKMplayerCamera(QFile & fifo_file,int max_time_ms_to_wait_for_open);
00055 ~QVCheckOKMplayerCamera();
00056 void run();
00057 private slots:
00058 void writeErrorInFifo();
00059 private:
00060 QFile & _fifo_file;
00061 int _max_time_ms_to_wait_for_open;
00062 };
00063
00064
00065
00066
00067
00068 class QVCameraThread: public QThread
00069 {
00070 Q_OBJECT
00071 public:
00072 QVCameraThread(QObject *object,char *slot);
00073 ~QVCameraThread();
00074 void run();
00075 private:
00076 QObject *_object;
00077 char *_slot;
00078 };
00079
00080
00081
00082
00083
00084
00085 class QVMPlayerIOProcessor: public QObject
00086 {
00087 Q_OBJECT
00088 public:
00089 QVMPlayerIOProcessor(QProcess *mplayer);
00090 ~QVMPlayerIOProcessor();
00091 void queueCommandToMPlayer(const QString &, bool ifEmpty = false);
00092 double fps, speed, time_length, time_pos;
00093 uInt cols, rows;
00094 public slots:
00095 int interpretMPlayerOutput();
00096 private slots:
00097 void sendCommandToMPlayer();
00098 private:
00099 QQueue<QString> command_queue;
00100 QMutex command_queue_mutex;
00101 QProcess *mplayer;
00102 };
00103
00104
00105 class QVMPlayerFrameGrabber: public QObject
00106 {
00107 Q_OBJECT
00108
00109 public:
00110 QVMPlayerFrameGrabber(QVMPlayerIOProcessor *, QFile *, uInt rows, uInt cols, bool realTime);
00111 ~QVMPlayerFrameGrabber();
00112 uInt getFrameSize() const { return buf_size; };
00113
00114 void getQVImageGray(QVImage<uChar> &imgGray) const;
00115 void getQVImageYUV(QVImage<uChar> &imgY, QVImage<uChar> &imgU, QVImage<uChar> &imgV) const;
00116
00117 void updateFrameBuffer();
00118 uInt frames_read;
00119 bool finished;
00120 QMutex mutex;
00121 QWaitCondition condition;
00122
00123 public slots:
00124 void updateSlot();
00125
00126 signals:
00127 void newReadFrameGrabber();
00128
00129
00130
00131 void sendCommandSignal();
00132
00133 private:
00134 QVCameraThread *qvcamerathread;
00135 QFile *fifoInput;
00136 QVMPlayerIOProcessor *mplayerIOProcessor;
00137
00138 bool debug_in_memcpy, debug_in_updateSlot;
00139 bool realTime;
00140 uInt buf_size;
00141
00142 QVImage<uChar> imgY, img_auxY, imgU, img_auxU, imgV, img_auxV;
00143 void readToBuffer(uChar *buf_img_aux, uInt buf_size);
00144 void getNewFrame(QVImage<uChar> &imgY, QVImage<uChar> &imgU, QVImage<uChar> &imgV);
00145 };
00146 #endif
00147
00148
00149 class QVWorker;
00150 class QVMPlayerIOProcessor;
00151
00239 class QVMPlayerCamera : public QVCamera
00240 {
00241 Q_OBJECT
00242
00243 public:
00245 QVMPlayerCamera(QString name = QString());
00247 ~QVMPlayerCamera();
00248
00249
00250
00252 enum OpenOption {
00254 Default = 0x0,
00256 RealTime = 0x1,
00258 Deinterlaced = 0x2,
00260 NoLoop = 0x4,
00262 RGBMEncoder = 0x8
00263 };
00264
00265 Q_DECLARE_FLAGS(OpenOptions,OpenOption);
00266
00271 bool openCam(const QString & url,OpenOptions opts = Default);
00272
00281 bool openCam(const QString & urlstring, unsigned int r, unsigned int c, OpenOptions opts = Default);
00282
00283 #ifndef DOXYGEN_IGNORE_THIS
00302 bool openCam();
00303 #endif
00304
00310 bool grab(QVImage<uChar,3> &image);
00311
00317 bool grab(QVImage<uChar,1> &image);
00318
00330 bool grab(QVImage<uChar> &imgY, QVImage<uChar> &imgU, QVImage<uChar> &imgV);
00331
00335 const QString getUrlBase() const { return path.split("/").last(); }
00336
00339 OpenOptions getOptions() const { return open_options; };
00340
00343 int getBufferSize() const { return mplayerFrameGrabber->getFrameSize(); };
00344
00347 unsigned int getFramesUpdated() const { return mplayerFrameGrabber->frames_read; }
00348
00351 unsigned int getRows() const { return mplayerIOProcessor->rows; };
00352
00355 unsigned int getCols() const { return mplayerIOProcessor->cols; };
00356
00359 double getFPS() const { return mplayerIOProcessor->fps; };
00360
00363 double getTimeLength() const { return mplayerIOProcessor->time_length; };
00364
00367 double getTimePos() const { return mplayerIOProcessor->time_pos; };
00368
00371 double getSpeed() const { return mplayerIOProcessor->speed; };
00372
00375 unsigned int getFramesGrabbed() const { return frames_grabbed; };
00376
00379 unsigned int getFramesRead() const { return mplayerFrameGrabber->frames_read; };
00380
00383 bool isLiveCamera() const { return live_camera; };
00384
00393 static bool getFrame(const QString uri, QVImage<uChar,3> &img, int frame = 0)
00394 {
00395 QVMPlayerCamera camera;
00396 if(camera.openCam(uri, QVMPlayerCamera::RGBMEncoder) == -1)
00397 return false;
00398 bool result;
00399 for (int i=-1; i < frame; i++)
00400 result = camera.grab(img);
00401 camera.closeCam();
00402 return result;
00403 }
00404
00413 static bool getFrame(const QString uri, QVImage<uChar,1> &img, int frame = 0)
00414 {
00415 QVMPlayerCamera camera;
00416 if(camera.openCam(uri, QVMPlayerCamera::Default) == -1)
00417 return false;
00418
00419 for (int i=-1; i < frame; i++)
00420 if (!camera.grab(img))
00421 return false;
00422
00423 camera.closeCam();
00424
00425 return true;
00426 }
00427
00438 static bool getFrame(const QString uri, QVImage<uChar> &imgY, QVImage<uChar> &imgU, QVImage<uChar> &imgV,
00439 int frame = 0)
00440 {
00441 QVMPlayerCamera camera;
00442 if(camera.openCam(uri, QVMPlayerCamera::Default) == -1)
00443 return false;
00444 bool result;
00445 for (int i=-1; i < frame; i++)
00446 result = camera.grab(imgY, imgU, imgV);
00447 camera.closeCam();
00448 return result;
00449 }
00450
00451 public slots:
00458 bool grab();
00459
00461 void pauseCam();
00463 void unpauseCam();
00465 void nextFrameCam();
00468 void setSpeedCam(double d);
00475 void seekCam(QVCamera::TSeekType type, double pos);
00477 void closeCam();
00478
00479 bool link(QVWorker *, const QString imageName);
00480 bool link(QVWorker *, const QString imageY, const QString imageU, const QString imageV);
00481 bool unlink(QVWorker *, const QString imageName);
00482
00483 signals:
00484
00485
00486
00487 void sendCommandSignal();
00488
00489 private:
00490
00491 bool rgbMode;
00492
00493 QWaitCondition conditionJustToSleepMiliseconds;
00494
00495 OpenOptions open_options;
00496 QVMPlayerFrameGrabber * mplayerFrameGrabber;
00497 QVMPlayerIOProcessor * mplayerIOProcessor;
00498
00499 QNamedPipe *namedPipe;
00500 QFile fifo_file;
00501 QProcess mplayer;
00502
00503 void initMPlayerArgs(QString urlString, unsigned int rows, unsigned int cols);
00504 bool performGrab();
00505
00506 QStringList mplayer_args;
00507 QString path, schema;
00508
00509 bool live_camera;
00510 int frames_grabbed;
00511 };
00512
00513
00514 Q_DECLARE_OPERATORS_FOR_FLAGS(QVMPlayerCamera::OpenOptions)
00515
00516 #endif
00517
00518
00519
00520