a1639c3d2d
return the length of the stream. Implemented the virtual methods in QuicktimeImageStream, (getLength, getReferenceTime, setTimeMultiplier), to return valid value for each. "
176 lines
4.1 KiB
C++
176 lines
4.1 KiB
C++
// -*-c++-*-
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/*
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* Copyright (C) 2004 Stephan Huber http://digitalmind.de
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*
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* The Open Scene Graph (OSG) is a cross platform C++/OpenGL library for
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* real-time rendering of large 3D photo-realistic models.
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* The OSG homepage is http://www.openscenegraph.org/
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*
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* This software is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _QUICKTIMEIMAGESTREAM_H_
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#define _QUICKTIMEIMAGESTREAM_H_
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#include <osg/ImageStream>
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#include <OpenThreads/Thread>
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#include <OpenThreads/Mutex>
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#define NUM_CMD_INDEX 20
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class MovieData;
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/**
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* Quicktime Image Stream class. streams a quicktime movie into an image
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*/
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class QuicktimeImageStream : public osg::ImageStream, public OpenThreads::Thread
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{
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public:
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/** Constructor
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* @param fileName movie to open */
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QuicktimeImageStream(std::string fileName = "");
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virtual Object* clone() const { return new QuicktimeImageStream; }
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virtual bool isSameKindAs(const Object* obj) const {
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return dynamic_cast<const QuicktimeImageStream*>(obj) != NULL;
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}
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virtual const char* className() const { return "QuicktimeImageStream"; }
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/// Start or continue stream.
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virtual void play()
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{
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if (!isRunning()) start();
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setCmd(THREAD_START);
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// ricky
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_status = ImageStream::PLAYING;
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}
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/// sets the movierate of this movie
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void setMovieRate(float rate) {
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if (!isRunning()) start();
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setCmd(THREAD_SETRATE,rate);
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}
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/// Pause stream at current position.
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virtual void pause()
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{
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setCmd(THREAD_STOP);
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// ricky
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_status = ImageStream::PAUSED;
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}
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/// Rewind stream to beginning.
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virtual void rewind() { setCmd(THREAD_REWIND); }
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/// forward stream to the end
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virtual void forward() { setCmd(THREAD_FORWARD); }
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/// stop playing
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virtual void quit(bool wiatForThreadToExit);
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/// Get total length in seconds.
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virtual double getLength() const
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{
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return double(_len);
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}
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/// jumps to a specific position
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void jumpTo(float pos) {
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setCmd(THREAD_SEEK, pos);
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}
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/// returns the current playing position
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inline float getCurrentTime() const { return _current; }
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/// @return the current moviedata-object
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MovieData* getMovieData() { return _data; }
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/// loads a movie from fileName
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void load(std::string fileName);
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/// starts the thread
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virtual void run();
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/// Go to a specific position in the stream.
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virtual void setReferenceTime(double time)
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{
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jumpTo(float(time));
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}
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/// Return the current position in the stream.
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virtual double getReferenceTime() const
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{
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return double(getCurrentTime());
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}
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// Set the time multiplier if you want to speed up,
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// slow down, or go normal speed.
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virtual void setTimeMultiplier(double multiplier)
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{
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setMovieRate(float(multiplier));
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}
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virtual double getTimeMultiplier()
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{
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return 0.0;
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}
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protected:
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/// destructor
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virtual ~QuicktimeImageStream();
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private:
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float _lastUpdate;
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float _len;
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float _current;
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float _currentRate;
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MovieData* _data;
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enum ThreadCommand {
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THREAD_IDLE = 0,
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THREAD_START,
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THREAD_STOP,
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THREAD_REWIND,
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THREAD_FORWARD,
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THREAD_SEEK,
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THREAD_SETRATE,
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THREAD_CLOSE,
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THREAD_QUIT
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};
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ThreadCommand _cmd[NUM_CMD_INDEX];
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float _rates[NUM_CMD_INDEX];
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int _wrIndex, _rdIndex;
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OpenThreads::Mutex _mutex;
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/// Set command.
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void setCmd(ThreadCommand cmd, float rate = 0.0f);
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/// Get command.
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ThreadCommand getCmd();
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// ricky
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static int _qtInstanceCount;
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};
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#endif
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