Native camera issue on HTC One S fixed.

Camera connect->disconnect->connect leads to sigsegv.
Apply properties method reimplemented.

modules/androidcamera/camera_wrapper/camera_wrapper.cpp

@@ -357,26 +357,25 @@ const char* CameraHandler::antibandingModesNames[ANDROID_CAMERA_ANTIBANDING_MODE
 
 CameraHandler* CameraHandler::initCameraConnect(const CameraCallback& callback, int cameraId, void* userData, CameraParameters* prevCameraParameters)
 {
-
     typedef sp<Camera> (*Android22ConnectFuncType)();
     typedef sp<Camera> (*Android23ConnectFuncType)(int);
     typedef sp<Camera> (*Android3DConnectFuncType)(int, int);
-    
+
     enum {
 	CAMERA_SUPPORT_MODE_2D = 0x01, /* Camera Sensor supports 2D mode. */
 	CAMERA_SUPPORT_MODE_3D = 0x02, /* Camera Sensor supports 3D mode. */
 	CAMERA_SUPPORT_MODE_NONZSL = 0x04, /* Camera Sensor in NON-ZSL mode. */
 	CAMERA_SUPPORT_MODE_ZSL = 0x08 /* Camera Sensor supports ZSL mode. */
     };
-        
+
     const char Android22ConnectName[] = "_ZN7android6Camera7connectEv";
     const char Android23ConnectName[] = "_ZN7android6Camera7connectEi";
     const char Android3DConnectName[] = "_ZN7android6Camera7connectEii";
-    
+
     LOGD("CameraHandler::initCameraConnect(%p, %d, %p, %p)", callback, cameraId, userData, prevCameraParameters);
-    
+
     sp<Camera> camera = 0;
-    
+
     void* CameraHALHandle = dlopen("libcamera_client.so", RTLD_LAZY);
     
     if (!CameraHALHandle)
@@ -384,7 +383,7 @@ CameraHandler* CameraHandler::initCameraConnect(const CameraCallback& callback,
 	LOGE("Cannot link to \"libcamera_client.so\"");
 	return NULL;
     }
-    
+
     // reset errors
     dlerror();
 
@@ -392,16 +391,19 @@ CameraHandler* CameraHandler::initCameraConnect(const CameraCallback& callback,
     {
 	LOGD("Connecting to CameraService v 2.2");
 	camera = Android22Connect();
+	LOGD("Connection to CameraService v 2.2 established");
     }
     else if (Android23ConnectFuncType Android23Connect = (Android23ConnectFuncType)dlsym(CameraHALHandle, Android23ConnectName))
     {
 	LOGD("Connecting to CameraService v 2.3");
 	camera = Android23Connect(cameraId);
+	LOGD("Connection to CameraService v 2.3 established");
     }
     else if (Android3DConnectFuncType Android3DConnect = (Android3DConnectFuncType)dlsym(CameraHALHandle, Android3DConnectName))
     {
 	LOGD("Connecting to CameraService v 3D");
 	camera = Android3DConnect(cameraId, CAMERA_SUPPORT_MODE_2D);
+	LOGD("Connection to CameraService v 3D established");
     }
     else
     {
@@ -412,19 +414,23 @@ CameraHandler* CameraHandler::initCameraConnect(const CameraCallback& callback,
     
     dlclose(CameraHALHandle);
     
-    if ( 0 == camera.get() )
+    if ( NULL == camera.get() )
     {
         LOGE("initCameraConnect: Unable to connect to CameraService\n");
         return 0;
     }
 
+    LOGD("Creating camera handler");
     CameraHandler* handler = new CameraHandler(callback, userData);
+    LOGD("Setting camera listener");
     camera->setListener(handler);
 
+    LOGD("Updating camera handler");
     handler->camera = camera;
     handler->cameraId = cameraId;
 
-    if (prevCameraParameters != 0)
+    LOGD("Checking previous camera parameters");
+    if (NULL != prevCameraParameters)
     {
         LOGI("initCameraConnect: Setting paramers from previous camera handler");
         camera->setParameters(prevCameraParameters->flatten());
@@ -454,7 +460,7 @@ CameraHandler* CameraHandler::initCameraConnect(const CameraCallback& callback,
 #if !defined(ANDROID_r2_2_0)
         // Set focus mode to continuous-video if supported
         const char* available_focus_modes = handler->params.get(CameraParameters::KEY_SUPPORTED_FOCUS_MODES);
-        if (available_focus_modes != 0)
+        if (NULL != available_focus_modes)
         {
 	    if (strstr(available_focus_modes, "continuous-video") != NULL)
 	    {
@@ -462,7 +468,7 @@ CameraHandler* CameraHandler::initCameraConnect(const CameraCallback& callback,
 
 		status_t resParams = handler->camera->setParameters(handler->params.flatten());
 
-                if (resParams != 0)
+                if (0 != resParams)
                 {
                     LOGE("initCameraConnect: failed to set autofocus mode to \"continuous-video\"");
                 }
@@ -560,7 +566,7 @@ CameraHandler* CameraHandler::initCameraConnect(const CameraCallback& callback,
     {
 	LOGD("Preview started successfully");
     }
-
+    
     return handler;
 }
 
@@ -576,7 +582,7 @@ void CameraHandler::closeCameraConnect()
     camera->disconnect();
     camera.clear();
 
-    camera=NULL;
+    camera = NULL;
     // ATTENTION!!!!!!!!!!!!!!!!!!!!!!!!!!
     // When we set 
     //    camera=NULL
@@ -808,43 +814,50 @@ void CameraHandler::applyProperties(CameraHandler** ppcameraHandler)
 {
     LOGD("CameraHandler::applyProperties()");
 
-    if (ppcameraHandler == 0)
+    if (NULL == ppcameraHandler)
     {
         LOGE("applyProperties: Passed NULL ppcameraHandler");
         return;
     }
 
-    if (*ppcameraHandler == 0)
+    if (NULL == *ppcameraHandler)
     {
         LOGE("applyProperties: Passed null *ppcameraHandler");
         return;
     }
 
     LOGD("CameraHandler::applyProperties()");
-    CameraHandler* previousCameraHandler=*ppcameraHandler;
+
+#if !defined(ANDROID_r2_2_0)
+    LOGD("Reconnect camera");
+    (*ppcameraHandler)->camera->reconnect();
+    (*ppcameraHandler)->params = (*ppcameraHandler)->camera->getParameters();
+#else
+    CameraHandler* previousCameraHandler = *ppcameraHandler;
     CameraParameters curCameraParameters(previousCameraHandler->params.flatten());
 
-    CameraCallback cameraCallback=previousCameraHandler->cameraCallback;
-    void* userData=previousCameraHandler->userData;
-    int cameraId=previousCameraHandler->cameraId;
+    CameraCallback cameraCallback = previousCameraHandler->cameraCallback;
+    void* userData = previousCameraHandler->userData;
+    int cameraId = previousCameraHandler->cameraId;
 
     LOGD("CameraHandler::applyProperties(): before previousCameraHandler->closeCameraConnect");
     previousCameraHandler->closeCameraConnect();
     LOGD("CameraHandler::applyProperties(): after previousCameraHandler->closeCameraConnect");
 
-
     LOGD("CameraHandler::applyProperties(): before initCameraConnect");
-    CameraHandler* handler=initCameraConnect(cameraCallback, cameraId, userData, &curCameraParameters);
+    CameraHandler* handler = initCameraConnect(cameraCallback, cameraId, userData, &curCameraParameters);
     LOGD("CameraHandler::applyProperties(): after initCameraConnect, handler=0x%x", (int)handler);
     if (handler == NULL) {
         LOGE("ERROR in applyProperties --- cannot reinit camera");
-        handler=initCameraConnect(cameraCallback, cameraId, userData, NULL);
+        handler = initCameraConnect(cameraCallback, cameraId, userData, NULL);
         LOGD("CameraHandler::applyProperties(): repeate initCameraConnect after ERROR, handler=0x%x", (int)handler);
         if (handler == NULL) {
             LOGE("ERROR in applyProperties --- cannot reinit camera AGAIN --- cannot do anything else");
         }
     }
-    (*ppcameraHandler)=handler;
+
+    (*ppcameraHandler) = handler;
+#endif
 }
 
 

modules/androidcamera/src/camera_activity.cpp

@@ -209,7 +209,7 @@ CameraActivity::ErrorCode CameraWrapperConnector::connectToLib()
 
     res = getSymbolFromLib(libHandle, SET_CAMERA_PROPERTY_SYMBOL_NAME, (void**)(&pSetProp_C));
     if (res) return res;
-    \
+
     res = getSymbolFromLib(libHandle, APPLY_CAMERA_PROPERTIES_SYMBOL_NAME, (void**)(&pApplyProp_C));
     if (res) return res;
 
@@ -391,16 +391,14 @@ void CameraActivity::applyProperties()
 
 int CameraActivity::getFrameWidth()
 {
-    if (frameWidth < 0)
-        frameWidth = getProperty(ANDROID_CAMERA_PROPERTY_FRAMEWIDTH);
-    return frameWidth;
+    LOGD("CameraActivity::getFrameWidth()");
+    return getProperty(ANDROID_CAMERA_PROPERTY_FRAMEWIDTH);
 }
 
 int CameraActivity::getFrameHeight()
 {
-    if (frameHeight < 0)
-        frameHeight = getProperty(ANDROID_CAMERA_PROPERTY_FRAMEHEIGHT);
-    return frameHeight;
+    LOGD("CameraActivity::getFrameHeight()");
+    return frameHeight = getProperty(ANDROID_CAMERA_PROPERTY_FRAMEHEIGHT);
 }
 
 void CameraActivity::setPathLibFolder(const char* path)

modules/highgui/src/cap.cpp

@@ -448,13 +448,15 @@ VideoCapture::~VideoCapture()
 
 bool VideoCapture::open(const string& filename)
 {
-    cap = cvCreateFileCapture(filename.c_str());
+    if (!isOpened())
+	cap = cvCreateFileCapture(filename.c_str());
     return isOpened();
 }
 
 bool VideoCapture::open(int device)
 {
-    cap = cvCreateCameraCapture(device);
+    if (!isOpened())
+	cap = cvCreateCameraCapture(device);
     return isOpened();
 }
 

modules/highgui/src/cap_android.cpp

@@ -203,6 +203,7 @@ CvCapture_Android::CvCapture_Android(int cameraId)
     m_frameFormat         = noformat;
 
     //try connect to camera
+    LOGD("CvCapture_Android::CvCapture_Android(%i)", cameraId);
     m_activity = new HighguiAndroidCameraActivity(this);
 
     if (m_activity == 0) return;
@@ -328,7 +329,7 @@ bool CvCapture_Android::setProperty( int propIdx, double propValue )
             break;
         default:
             CV_Error( CV_StsOutOfRange, "Failed attempt to SET unsupported camera property." );
-        return false;
+            return false;
         }
 
         if (propIdx != CV_CAP_PROP_AUTOGRAB) {// property for highgui class CvCapture_Android only
@@ -353,10 +354,10 @@ bool CvCapture_Android::grabFrame()
     {
         m_activity->applyProperties();
         m_CameraParamsChanged = false;
-    m_dataState= CVCAPTURE_ANDROID_STATE_NO_FRAME;//we will wait new frame
+        m_dataState = CVCAPTURE_ANDROID_STATE_NO_FRAME;//we will wait new frame
     }
 
-    if (m_dataState!=CVCAPTURE_ANDROID_STATE_HAS_NEW_FRAME_UNGRABBED)
+    if (m_dataState != CVCAPTURE_ANDROID_STATE_HAS_NEW_FRAME_UNGRABBED)
     {
         m_waitingNextFrame = true;
         pthread_cond_wait(&m_nextFrameCond, &m_nextFrameMutex);