Is this a bug? ofVideoPlayer + ofSystemLoadDialog + crash

beginners
#1

Hi,
I’m trying to modify "fileOpenSaveDialog"example (utils) using a vector of ofVideoPlayer instead of ofImage.When I open the dialog for first time and select a video folder every thing is fine. If I repeat the operation a second time my program will crash. Populating the vector with ofImage objects don’t cause the crash. So I guess is something related to ofVideoPlayer, right?
or Am I doing something wrong?
what could be a solution or workaround?

here my code:

void testApp::setup()
ofBackground(0, 0, 0);
gui.setup();
gui.add(opendir.setup("select video directory "));
}
void testApp::update(){
}
void testApp::draw(){
    ofSetColor(255, 255, 255);
    if(opendir){
        //Open the Open File Dialog
		ofFileDialogResult openFileResult= ofSystemLoadDialog("Select video dir", true);
		//Check if the user opened a file
		if (openFileResult.bSuccess){
			//We have a file, check it and process it
			processOpenFileSelection(openFileResult);
		}else {
			ofLogVerbose("User hit cancel");
		}
    }
    gui.draw();
}
void testApp::processOpenFileSelection(ofFileDialogResult openFileResult){
    ofLog() << "getPath(): "  <<  openFileResult.getPath();
    files.allowExt("mov");
    files.listDir(openFileResult.getPath());
    ofLog() << "video " << files.getPath(counter);
    loadedVideos.clear()
}

thanks in advance!
husk

#2

Hi, I added a couple of lines trying to explain better my problem:

.h

#include "ofMain.h"
#include "ofxGui.h"

class testApp : public ofBaseApp{

	public:
		void setup();
		void update();
		void draw();


		void processOpenFileSelection(ofFileDialogResult openFileResult);

        ofDirectory files;
        vector<ofVideoPlayer>loadedVideos;
        ofxPanel gui;
        ofxButton opendir;

.ccp;

void testApp::setup()
    ofBackground(0, 0, 0);
    gui.setup();
    gui.add(opendir.setup("select video directory "));
    }
    void testApp::update(){
    }
    void testApp::draw(){
        ofSetColor(255, 255, 255);
        if(opendir){
            //Open the Open File Dialog
    		ofFileDialogResult openFileResult= ofSystemLoadDialog("Select video dir", true);
    		//Check if the user opened a file
    		if (openFileResult.bSuccess){
    			//We have a file, check it and process it
    			processOpenFileSelection(openFileResult);
    		}else {
    			ofLogVerbose("User hit cancel");
    		}
        }
        gui.draw();
    }
    void testApp::processOpenFileSelection(ofFileDialogResult openFileResult){
ofLog() << "getPath(): "  <<  openFileResult.getPath();
files.allowExt("mov");
files.listDir(openFileResult.getPath());
ofLog() << "video " << files.getPath(counter);
loadedVideos.clear();
ofVideoPlayer video;
video.loadMovie(files.getPath(counter));
video.play();
loadedVideos.push_back(video);
    }

The first time I click the button and choose a video directory every thing works as aspected, but the second time it crash.

What I’m doing wrong?
any suggestion is really appreciated.
thanks
husk

#3

Not sure what it actually does. But have you tried to close the already loaded movies before loading new ones?
http://www.openframeworks.cc/documentation/video/ofVideoPlayer.html#show_closeMovie

#4

this is a known problem in 0.8.1, it’s fixed in master already, if you don’t want to download the full github version you can fix it downloading this file only:

https://raw.githubusercontent.com/openframeworks/openFrameworks/master/libs/openFrameworks/utils/ofSystemUtils.cpp

in libs/openFrameworks/utils

#5

Hey @arturo,
thanks for the help.
I changed ofSystemUtils.cpp with the new one but now I get an error compiling OF:

./../../libs/openFrameworks/utils/ofSystemUtils.cpp: In function 'std::string gtkFileDialog(GtkFileChooserAction, std::string, std::string)':
../../../libs/openFrameworks/utils/ofSystemUtils.cpp:212:49: error: 'getGstMainLoop' is not a member of 'ofGstUtils'
   g_main_context_invoke(g_main_loop_get_context(ofGstUtils::getGstMainLoop()), &file_dialog_gtk, &dialogData);
                                                 ^
../../../libs/openFrameworks/utils/ofSystemUtils.cpp: In function 'void ofSystemAlertDialog(std::string)':
../../../libs/openFrameworks/utils/ofSystemUtils.cpp:280:51: error: 'getGstMainLoop' is not a member of 'ofGstUtils'
     g_main_context_invoke(g_main_loop_get_context(ofGstUtils::getGstMainLoop()), &alert_dialog_gtk, &dialogData);
                                                   ^
../../../libs/openFrameworks/utils/ofSystemUtils.cpp: In function 'std::string ofSystemTextBoxDialog(std::string, std::string)':
../../../libs/openFrameworks/utils/ofSystemUtils.cpp:590:49: error: 'getGstMainLoop' is not a member of 'ofGstUtils'
   g_main_context_invoke(g_main_loop_get_context(ofGstUtils::getGstMainLoop()), &text_dialog_gtk, &dialogData);
                                                 ^
makefileCommon/compile.core.mk:228: recipe for target '../../../libs/openFrameworksCompiled/lib/linux/obj/Debug/libs/openFrameworks/utils/ofSystemUtils.o' failed
make[1]: *** [../../../libs/openFrameworksCompiled/lib/linux/obj/Debug/libs/openFrameworks/utils/ofSystemUtils.o] Error 1
makefileCommon/compile.core.mk:207: recipe for target 'Debug' failed
make: *** [Debug] Error 2
there has been a problem compiling Debug OF library

I’m a gnu/linux debian sid kernel 3.13.6-031306-generic

husk

#6

mmh, i thought it might be completely compatible with 0.8.1, you can try downloading ofGst* in video too, or just download the full version from github