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00025 #ifndef MPLAYERCAMERA_H
00026 #define MPLAYERCAMERA_H
00027
00028 #include <QProcess>
00029 #include <QString>
00030 #include <QUrl>
00031 #include <QThread>
00032 #include <QMutex>
00033 #include <QWaitCondition>
00034 #include <QFile>
00035 #include <QTimer>
00036 #include <QQueue>
00037
00038 #include <QVCamera>
00039 #include <qvutils/qnamedpipe.h>
00040
00041 #ifndef DOXYGEN_IGNORE_THIS
00042
00043
00044
00045
00046
00047
00048 class QVCheckOKMplayerCamera: public QThread
00049 {
00050 Q_OBJECT
00051 public:
00052 QVCheckOKMplayerCamera(QFile & fifo_file,int max_time_ms_to_wait_for_open);
00053 ~QVCheckOKMplayerCamera();
00054 void run();
00055 private slots:
00056 void writeErrorInFifo();
00057 private:
00058 QFile & _fifo_file;
00059 int _max_time_ms_to_wait_for_open;
00060 };
00061
00062
00063
00064
00065
00066 class QVCameraThread: public QThread
00067 {
00068 Q_OBJECT
00069 public:
00070 QVCameraThread(QObject *object,char *slot);
00071 ~QVCameraThread();
00072 void run();
00073 private:
00074 QObject *_object;
00075 char *_slot;
00076 };
00077
00078
00079
00080
00081
00082
00083 class QVMPlayerIOProcessor: public QObject
00084 {
00085 Q_OBJECT
00086 public:
00087 QVMPlayerIOProcessor(QProcess *mplayer);
00088 ~QVMPlayerIOProcessor();
00089 void queueCommandToMPlayer(const QString &, bool ifEmpty = false);
00090 double fps, speed, time_length, time_pos;
00091 uInt cols, rows;
00092 public slots:
00093 int interpretMPlayerOutput();
00094 private slots:
00095 void sendCommandToMPlayer();
00096 private:
00097 QQueue<QString> command_queue;
00098 QMutex command_queue_mutex;
00099 QProcess *mplayer;
00100 };
00101
00102
00103 class QVMPlayerFrameGrabber: public QObject
00104 {
00105 Q_OBJECT
00106
00107 public:
00108 QVMPlayerFrameGrabber(QVMPlayerIOProcessor *, QFile *, uInt rows, uInt cols, bool realTime);
00109 ~QVMPlayerFrameGrabber();
00110 uInt getFrameSize() const { return buf_size; };
00111
00112 void getQVImageGray(QVImage<uChar> &imgGray) const;
00113 void getQVImageYUV(QVImage<uChar> &imgY, QVImage<uChar> &imgU, QVImage<uChar> &imgV) const;
00114
00115 void updateFrameBuffer();
00116 uInt frames_read;
00117 bool finished;
00118 QMutex mutex;
00119 QWaitCondition condition;
00120
00121 public slots:
00122 void updateSlot();
00123
00124 signals:
00125 void newReadFrameGrabber();
00126
00127
00128
00129 void sendCommandSignal();
00130
00131 private:
00132 QVCameraThread *qvcamerathread;
00133 QFile *fifoInput;
00134 QVMPlayerIOProcessor *mplayerIOProcessor;
00135
00136 bool debug_in_memcpy, debug_in_updateSlot;
00137 bool realTime;
00138 uInt buf_size;
00139
00140 QVImage<uChar> imgY, img_auxY, imgU, img_auxU, imgV, img_auxV;
00141 void readToBuffer(uChar *buf_img_aux, uInt buf_size);
00142 void getNewFrame(QVImage<uChar> &imgY, QVImage<uChar> &imgU, QVImage<uChar> &imgV);
00143 };
00144 #endif
00145
00146
00147 class QVWorker;
00148 class QVMPlayerIOProcessor;
00149
00237 class QVMPlayerCamera : public QVCamera
00238 {
00239 Q_OBJECT
00240
00241 public:
00243 QVMPlayerCamera(QString name = QString());
00245 ~QVMPlayerCamera();
00246
00247
00248
00250 enum OpenOption {
00252 Default = 0x0,
00254 RealTime = 0x1,
00256 Deinterlaced = 0x2,
00258 NoLoop = 0x4,
00260 RGBMEncoder = 0x8
00261 };
00262
00263 Q_DECLARE_FLAGS(OpenOptions,OpenOption);
00264
00269 bool openCam(const QString & url,OpenOptions opts = Default);
00270
00279 bool openCam(const QString & urlstring, unsigned int r, unsigned int c, OpenOptions opts = Default);
00280
00281 #ifndef DOXYGEN_IGNORE_THIS
00300 bool openCam();
00301 #endif
00302
00308 bool grab(QVImage<uChar,3> &image);
00309
00315 bool grab(QVImage<uChar,1> &image);
00316
00328 bool grab(QVImage<uChar> &imgY, QVImage<uChar> &imgU, QVImage<uChar> &imgV);
00329
00333 const QString getUrlBase() const { return path.split("/").last(); }
00334
00337 OpenOptions getOptions() const { return open_options; };
00338
00341 int getBufferSize() const { return mplayerFrameGrabber->getFrameSize(); };
00342
00345 unsigned int getFramesUpdated() const { return mplayerFrameGrabber->frames_read; }
00346
00349 unsigned int getRows() const { return mplayerIOProcessor->rows; };
00350
00353 unsigned int getCols() const { return mplayerIOProcessor->cols; };
00354
00357 double getFPS() const { return mplayerIOProcessor->fps; };
00358
00361 double getTimeLength() const { return mplayerIOProcessor->time_length; };
00362
00365 double getTimePos() const { return mplayerIOProcessor->time_pos; };
00366
00369 double getSpeed() const { return mplayerIOProcessor->speed; };
00370
00373 unsigned int getFramesGrabbed() const { return frames_grabbed; };
00374
00377 unsigned int getFramesRead() const { return mplayerFrameGrabber->frames_read; };
00378
00381 bool isLiveCamera() const { return live_camera; };
00382
00391 static bool getFrame(const QString uri, QVImage<uChar,3> &img, int frame = 0)
00392 {
00393 QVMPlayerCamera camera;
00394 if(camera.openCam(uri, QVMPlayerCamera::RGBMEncoder) == -1)
00395 return false;
00396 bool result;
00397 for (int i=-1; i < frame; i++)
00398 result = camera.grab(img);
00399 camera.closeCam();
00400 return result;
00401 }
00402
00411 static bool getFrame(const QString uri, QVImage<uChar,1> &img, int frame = 0)
00412 {
00413 QVMPlayerCamera camera;
00414 if(camera.openCam(uri, QVMPlayerCamera::Default) == -1)
00415 return false;
00416
00417 for (int i=-1; i < frame; i++)
00418 if (!camera.grab(img))
00419 return false;
00420
00421 camera.closeCam();
00422
00423 return true;
00424 }
00425
00436 static bool getFrame(const QString uri, QVImage<uChar> &imgY, QVImage<uChar> &imgU, QVImage<uChar> &imgV,
00437 int frame = 0)
00438 {
00439 QVMPlayerCamera camera;
00440 if(camera.openCam(uri, QVMPlayerCamera::Default) == -1)
00441 return false;
00442 bool result;
00443 for (int i=-1; i < frame; i++)
00444 result = camera.grab(imgY, imgU, imgV);
00445 camera.closeCam();
00446 return result;
00447 }
00448
00449 public slots:
00456 bool grab();
00457
00459 void pauseCam();
00461 void unpauseCam();
00463 void nextFrameCam();
00466 void setSpeedCam(double d);
00473 void seekCam(QVCamera::TSeekType type, double pos);
00475 void closeCam();
00476
00477 bool link(QVWorker *, const QString imageName);
00478 bool link(QVWorker *, const QString imageY, const QString imageU, const QString imageV);
00479 bool unlink(QVWorker *, const QString imageName);
00480
00481 signals:
00482
00483
00484
00485 void sendCommandSignal();
00486
00487 private:
00488
00489 bool rgbMode;
00490
00491 QWaitCondition conditionJustToSleepMiliseconds;
00492
00493 OpenOptions open_options;
00494 QVMPlayerFrameGrabber * mplayerFrameGrabber;
00495 QVMPlayerIOProcessor * mplayerIOProcessor;
00496
00497 QNamedPipe *namedPipe;
00498 QFile fifo_file;
00499 QProcess mplayer;
00500
00501 void initMPlayerArgs(QString urlString, unsigned int rows, unsigned int cols);
00502 bool performGrab();
00503
00504 QStringList mplayer_args;
00505 QString path, schema;
00506
00507 bool live_camera;
00508 int frames_grabbed;
00509 };
00510
00511
00512 Q_DECLARE_OPERATORS_FOR_FLAGS(QVMPlayerCamera::OpenOptions)
00513
00514 #endif
00515
00516
00517
00518