HTC One, OpenCV & Native Activity

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HTC One, OpenCV & Native Activity are on a boat.

I tried to run a native activity application, on my HTC One, with Android 4.1.2. I'm using OpenCV 2.4.6.

I tried the sample, provided by OpenCV4Android, but had a couple of errors. So I reduced the code to keep only the necessary things.

I've got a segmentation fault, right after initialising the camera. Here's my code :

struct Engine {
android_app* app;
cv::Ptr<cv::VideoCapturecapture;
};

static void engine_handle_cmd(android_app* app, int32_t cmd) {
    Engine* engine = (Engine*) app->userData;
    switch (cmd) {
    case APP_CMD_INIT_WINDOW:
        if (app->window != NULL) {
            LOGI("APP_CMD_INIT_WINDOW");
            engine->capture = new cv::VideoCapture(0);

            cv::Size camera_resolution = cv::Size(720, 480);
            engine->capture->set(CV_CAP_PROP_FRAME_WIDTH,
                    camera_resolution.width);
            engine->capture->set(CV_CAP_PROP_FRAME_HEIGHT,
                    camera_resolution.height);
            return;
        }
        break;
    case APP_CMD_TERM_WINDOW:
        LOGI("APP_CMD_TERM_WINDOW");

        engine->capture->release();
        break;
    }
}

void android_main(android_app* app) {
    Engine engine;

    // Make sure glue isn't stripped.
    app_dummy();

    size_t engine_size = sizeof(engine); // for Eclipse CDT parser
    LOGI("Size of = %i", engine_size);
    memset((void*) &engine, 0, 12);

    app->userData = &engine;
    app->onAppCmd = engine_handle_cmd;
    engine.app = app;

    float fps = 0;
    cv::Mat drawing_frame;
    std::queue<int64time_queue;

    // loop waiting for stuff to do.
    while (1) {
        // Read all pending events.
        int ident;
        int events;
        android_poll_source* source;

        // Process system events
        while ((ident = ALooper_pollAll(0, NULL, &events, (void**) &source))
                >= 0) {
            // Process this event.
            if (source != NULL) {
                source->process(app, source);
            }

            // Capture frame from camera and draw it
            if (!engine.capture.empty()) {
                if (engine.capture->grab()) {
                    engine.capture->retrieve(drawing_frame,
                            CV_CAP_ANDROID_COLOR_FRAME_RGBA);
                }
            }
        }
    }
}

Have anyone experienced something like that?

Many thanks!

Here's the log file:

07-30 09:53:47.568:
I/OpenCVManager/Helper(23841):
GTK+ 2.x:                    NO 07-30
09:53:47.568:
I/OpenCVManager/Helper(23841):
GThread :                    NO 07-30
09:53:47.568:
I/OpenCVManager/Helper(23841):
GtkGlExt:                    NO 07-30
09:53:47.568:
I/OpenCVManager/Helper(23841):
OpenGL support:              NO 07-30
09:53:47.568:
I/OpenCVManager/Helper(23841):   Media
I/O:  07-30 09:53:47.568:
I/OpenCVManager/Helper(23841):
ZLib:                        z (ver
1.2.3) 07-30 09:53:47.568: I/OpenCVManager/Helper(23841):
JPEG:                        build
(ver 62) 07-30 09:53:47.568:
I/OpenCVManager/Helper(23841):
PNG:                         build
(ver 1.5.12) 07-30 09:53:47.568:
I/OpenCVManager/Helper(23841):
TIFF:                        build
(ver 42 - 4.0.2) 07-30 09:53:47.568:
I/OpenCVManager/Helper(23841):
JPEG 2000:                   build
(ver 1.900.1) 07-30 09:53:47.568:
I/OpenCVManager/Helper(23841):
OpenEXR:                     build
(ver 1.7.1) 07-30 09:53:47.568:
I/OpenCVManager/Helper(23841):   Video
I/O: 07-30 09:53:47.568:
I/OpenCVManager/Helper(23841):
AndroidNativeCamera:         YES, use
prebuilt libraries 07-30 09:53:47.568:
I/OpenCVManager/Helper(23841):   Other
third-party libraries: 07-30
09:53:47.568:
I/OpenCVManager/Helper(23841):     Use
IPP:                     NO 07-30
09:53:47.568:
I/OpenCVManager/Helper(23841):     Use
Eigen:                   YES (ver
3.1.2) 07-30 09:53:47.568: I/OpenCVManager/Helper(23841):     Use
TBB:                     YES (ver 4.1
interface 6102) 07-30 09:53:47.568:
I/OpenCVManager/Helper(23841 ...