How to use startPreview method in fMBT

Best Python code snippet using fMBT_python

nvcstest.py

Source:nvcstest.py

...44    def setupGraph(self):45        self.obGraph.setImager(self.options.imager_id)46    def runTest(self, args):47        print "capturing jpeg image..."48        self.obCamera.startPreview()49        fileName = "out_%s_test" % self.testID50        jpegFilePath = os.path.join(self.testDir, fileName + ".jpg")51        self.obCamera.captureJpegImage(jpegFilePath)52        self.obCamera.stopPreview()53        if (os.path.exists(jpegFilePath) != True):54            self.logger.error("Couldn't capture the jpeg image: %s" % jpegFilePath)55            retVal = NvCSTestResult.ERROR56        return NvCSTestResult.SUCCESS57class NvCSMultipleRawTest(NvCSTestBase):58    "Multiple Raw Image Test"59    imageNumValues = range(1, 101)60    def __init__(self, options):61        NvCSTestBase.__init__(self, "Multiple_Raw")62        self.options = options63    def setupGraph(self):64        self.obGraph.setImager(self.options.imager_id)65    def __del__(self):66        if (os.path.exists(self.testDir)):67            shutil.rmtree(self.testDir)68    def runPreTest(self):69        if (not self.obCamera.isRawCaptureSupported()):70            self.logger.info("raw capture is not supported")71            return NvCSTestResult.SKIPPED72        else:73            return NvCSTestResult.SUCCESS74    def runTest(self, args):75        retVal = NvCSTestResult.SUCCESS76        for imageNum in self.imageNumValues:77            # take an image78            fileName = "out_%s_%d_test" % (self.testID, imageNum)79            jpegFilePath = os.path.join(self.testDir, fileName + ".jpg")80            rawfilePath = os.path.join(self.testDir, fileName + ".nvraw")81            self.obCamera.startPreview()82            self.logger.debug("capturing image: %d" % imageNum)83            self.obCamera.captureConcurrentJpegAndRawImage(jpegFilePath)84            self.obCamera.stopPreview()85            if os.path.exists(rawfilePath) != True:86                self.logger.error("couldn't find file: %s" % rawfilePath)87                retVal = NvCSTestResult.ERROR88                break89            if not self.nvrf.readFile(rawfilePath):90                self.logger.error("couldn't open the file: %s" % rawfilePath)91                retVal = NvCSTestResult.ERROR92            pattern = ".*"93            if((imageNum % 10) == 0):94                regexOb = re.compile(pattern)95                for fname in os.listdir(self.testDir):96                    if regexOb.search(fname):97                        self.logger.debug("removing file %s" % fname)98                        os.remove(os.path.join(self.testDir, fname))99        return retVal100class NvCSRAWCapTest(NvCSTestBase):101    "RAW Capture Test"102    def __init__(self, options):103        NvCSTestBase.__init__(self, "RAW_Capture")104        self.options = options105    def setupGraph(self):106        self.obGraph.setImager(self.options.imager_id)107        self.obGraph.setGraphType(GraphType.RAW)108        return NvCSTestResult.SUCCESS109    def runTest(self, args):110        retVal = NvCSTestResult.SUCCESS111        self.obCamera.startPreview()112        fileName = "out_%s_test" % self.testID113        filePath = os.path.join(self.testDir, fileName + ".nvraw")114        try:115            self.obCamera.captureRAWImage(filePath)116        except nvcamera.NvCameraException, err:117            if (err.value == nvcamera.NvError_NotSupported):118                self.logger.info("raw capture is not supported")119                return NvCSTestResult.SKIPPED120            else:121                raise122        self.obCamera.stopPreview()123        if (os.path.exists(filePath) != True):124            self.logger.error("Couldn't capture the raw image: %s" % filePath)125            retVal = NvCSTestResult.ERROR126        return retVal127class NvCSConcurrentRawCapTest(NvCSTestBase):128    "Concurrent raw capture test"129    def __init__(self, options):130        NvCSTestBase.__init__(self, "Concurrent_Raw_Capture")131        self.options = options132    def setupGraph(self):133        self.obGraph.setImager(self.options.imager_id)134    def runPreTest(self):135        if (not self.obCamera.isRawCaptureSupported()):136            self.logger.info("raw capture is not supported")137            return NvCSTestResult.SKIPPED138        else:139            return NvCSTestResult.SUCCESS140    def runTest(self, args):141        retVal = NvCSTestResult.SUCCESS142        self.obCamera.startPreview()143        fileName = "out_%s_test" % self.testID144        jpegFilePath = os.path.join(self.testDir, fileName + ".jpg")145        rawFilePath = os.path.join(self.testDir, fileName + ".nvraw")146        self.obCamera.captureConcurrentJpegAndRawImage(jpegFilePath)147        self.obCamera.stopPreview()148        if (os.path.exists(rawFilePath) != True):149            self.logger.error("Couldn't capture the raw image: %s" % rawFilePath)150            retVal = NvCSTestResult.ERROR151        if not self.nvrf.readFile(rawFilePath):152            self.logger.error("couldn't open the file: %s" % rawFilePath)153            retVal = NvCSTestResult.ERROR154        # Check no values over 2**bitsPerSample155        if (max(self.nvrf._pixelData.tolist()) > (2**self.nvrf._bitsPerSample)):156            self.logger.error("pixel value is over %d." % 2**self.nvrf._bitsPerSample)157            retVal = NvCSTestResult.ERROR158        return retVal159class NvCSPropertyTest(NvCSTestBase):160    "Property verification test"161    def __init__(self, options):162        NvCSTestBase.__init__(self, "Property_Verification")163        self.options = options164    def setupGraph(self):165        self.obGraph.setImager(self.options.imager_id)166    def runTest(self, args):167        # take an image with contrast168        print "capturing jpeg image with contrast value %d..." % 100169        self.obCamera.setAttr(nvcamera.attr_contrast, 50)170        self.captureJpegImage("out_%s_%s_%d_test" % (self.testID, "contrast", 100))171        # take an image with brightness172        self.obCamera.setAttr(nvcamera.attr_brightness, 14.0)173        print "capturing jpeg image with brightness value %d..." % 50.0174        self.captureJpegImage("out_%s_%s_%d_test" % (self.testID, "brightness", 50.0))175        # take an image with max (5.0) saturation176        print "capturing jpeg image with saturation value %d..." % 0.0177        self.obCamera.setAttr(nvcamera.attr_saturation, 5.0)178        self.captureJpegImage("out_%s_%s_%f_test" % (self.testID, "saturation", 0.0))179        return NvCSTestResult.SUCCESS180class NvCSEffectTest(NvCSTestBase):181    "Effect verification test"182    effectValues = ["None",183                    "Noise",184                    "Emboss",185                    "Negative",186                    "Sketch",187                    "OilPaint",188                    "Hatch",189                    "Gpen",190                    "Antialias",191                    "DeRing",192                    "Solarize",193                    "Posterize",194                    "Sepia",195                    "BW"196                  ]197    def __init__(self, options):198        NvCSTestBase.__init__(self, "Effect_Verification")199        self.options = options200    def setupGraph(self):201        self.obGraph.setImager(self.options.imager_id)202    def runTest(self, args):203        for effectVal in self.effectValues:204            # take an image with specified effect205            print "capturing image with %s effect..." % effectVal206            self.obCamera.setAttr(nvcamera.attr_effect, effectVal)207            # take an image208            self.captureJpegImage("out_%s_%s_test" % (self.testID, effectVal))209        return NvCSTestResult.SUCCESS210class NvCSFlickerTest(NvCSTestBase):211    "Flicker verification test"212    flickerValues = ["off", "auto", "50", "60"]213    def __init__(self, options):214        NvCSTestBase.__init__(self, "Flicker")215        self.options = options216    def setupGraph(self):217        self.obGraph.setImager(self.options.imager_id)218    def runTest(self, args):219        for flickerVal in self.flickerValues:220            # take an image with specified Flicker effect221            print "capturing jpeg image flicker value %s..." % flickerVal222            self.obCamera.setAttr(nvcamera.attr_flicker, flickerVal)223            # take an image224            self.captureJpegImage("out_%s_%s_test" % (self.testID, flickerVal))225        return NvCSTestResult.SUCCESS226class NvCSAWBTest(NvCSTestBase):227    "Auto White Balance test"228    awbValues = ["Off",229                 "Auto",230                 "Tungsten",231                 "Fluorescent",232                 "Sunny",233                 "Shade",234                 "Cloudy",235                 "Incandescent",236                 "Flash",237                 "Horizon"]238    def __init__(self, options):239        NvCSTestBase.__init__(self, "AWB")240        self.options = options241    def setupGraph(self):242        self.obGraph.setImager(self.options.imager_id)243    def runTest(self, args):244        # take an image with specified AWB setting245        for awbValue in self.awbValues:246            print "capturing jpeg image with AWB set to %s..." % awbValue247            self.obCamera.setAttr(nvcamera.attr_whitebalance, awbValue)248            # take an image249            self.captureJpegImage("out_%s_%s_test" % (self.testID, awbValue))250        return NvCSTestResult.SUCCESS251class NvCSMeteringTest(NvCSTestBase):252    "Metering test"253    meteringmodeValues = ["center", "spot", "fullframe"]254    def __init__(self, options):255        NvCSTestBase.__init__(self, "Metering")256        self.options = options257    def setupGraph(self):258        self.obGraph.setImager(self.options.imager_id)259    def runTest(self, args):260        # take an image with specified meteringmode value261        for meteringMode in self.meteringmodeValues:262            print "capturing jpeg image with Metering set to %s..." % meteringMode263            self.obCamera.setAttr(nvcamera.attr_meteringmode, meteringMode)264            # take an image265            self.captureJpegImage("out_%s_%s_test" % (self.testID, meteringMode))266        return NvCSTestResult.SUCCESS267class NvCSAFTest(NvCSTestBase):268    "AF test"269    afValues = [-1, 0]270    def __init__(self, options):271        NvCSTestBase.__init__(self, "AF")272        self.options = options273    def setupGraph(self):274        self.obGraph.setImager(self.options.imager_id)275    def runTest(self, args):276        for afVal in self.afValues:277            # take an image with specified AF value278            print "capturing jpeg image with AF set to %d..." % afVal279            self.obCamera.setAttr(nvcamera.attr_autofocus, afVal)280            self.startPreview()281            # take an image282            self.captureJpegImage("out_%s_%d_test" % (self.testID, afVal))283        return NvCSTestResult.SUCCESS284class NvCSAutoFrameRateTest(NvCSTestBase):285    "FPS test"286    def __init__(self, options):287        NvCSTestBase.__init__(self, "FPS")288        self.options = options289    def setupGraph(self):290        self.obGraph.setImager(self.options.imager_id)291    def runTest(self, args):292        # take an image with 0 AFR293        self.obCamera.setAttr(nvcamera.attr_autoframerate, 0)294        self.startPreview()295        # take an image296        self.captureJpegImage("out_%s_%d_test" % (self.testID, 0))297        return NvCSTestResult.SUCCESS298class NvCSJpegRotationTest(NvCSTestBase):299    "JPEG Rotation test"300    rotationValues = ["None", "Rotate90", "Rotate180", "Rotate270"]301    def __init__(self, options):302        NvCSTestBase.__init__(self, "Jpeg_Rotation")303        self.options = options304    def setupGraph(self):305        self.obGraph.setImager(self.options.imager_id)306    def runTest(self, args):307        for rotationVal in self.rotationValues:308            # take an image specified rotation309            print "capturing jpeg image with rotation set to %s..." % rotationVal310            self.obCamera.setAttr(nvcamera.attr_transform, rotationVal)311            self.startPreview()312            # take an image313            self.captureJpegImage("out_%s_%s_test" % (self.testID, rotationVal))...

polypServer.py

Source:polypServer.py

...33        self.active = True34    def stopCamera(self) :35        self.camera.close()36        self.active = False37    def startPreview(self):38        if self.active == False :39            self.initCamera()40        self.camera.start_preview()41        self.preview = True42        time.sleep(2)43        return json.jsonify(camera="Active", preview=True)44    def stopPreview(self):45        self.camera.stop_preview()46        self.preview = False47        return json.jsonify(camera="Active", preview=False)48    def getPicture(self):49        if( self.active == False ) :50            self.startPreview()51        self.camera.capture("snap.png", use_video_port=True)52        return send_file("snap.png")53# =======================================================================54app = PolypServer("polypserver1")55@app.route('/')56def service():57    return app.service()58@app.route('/camera/on')59def camactive():60    return app.startPreview()61@app.route('/camera/off')62def camdeactive():63    return app.stopPreview()64@app.route('/camera/get')65def camsnap():66    return app.getPicture()67if __name__ == "__main__":...

TimelapseClass.py

Source:TimelapseClass.py

1from time import sleep2import sys3from threading import Thread, Event4from picamera import PiCamera5class Timelapse():6    def __init__(self):7        8        self.width = 32809        self.height = 246410        self.frames = 1011        self.interval = 1012        self.File = "/home/pi/"13        14    def ChangeWidth(self,width):15        self.width = width16        return self17    18    def ChangeHeight(self,height):19        self.height = height20        return self21        22    def ChangeNumberOfFrames(self,frames):23        self.frames = frames24        return self25    def ChangeInterval(self,interval):26        self.interval = interval27        return self28    29    def ChangeFile(self,file):30        self.File = str(file)31        return self32    33    def StartTimelapseThread(self):34        self.tstopped = False35        t = Thread(target=self.StartTimelapse, args=())36        t.daemon = True37        t.start()38        return self39    def StartTimelapse(self):        40        if self.tstopped:41            return 42        camera = PiCamera()43        camera.resolution = (self.width,self.height)44        camera.start_preview(fullscreen=False, window=(200,200,800,800))45        sleep(self.interval)46        for i in range(self.frames):47            camera.capture(self.File + "/" + str(i) + ".jpg")48            sleep(self.interval)49        camera.close()50        camera.stop_preview()51        self.tstopped = True52        53    def StartPreviewThread(self):54        self.pstopped = False55        self.stop = False56        p = Thread(target=self.StartPreview, args=())57        p.daemon = True58        p.start()59        return self60        61    def StartPreview(self):62        if self.pstopped:63            return64        camera = PiCamera()65        camera.resolution = (self.width,self.height)66        camera.start_preview(fullscreen=False, window=(200,200,800,800))67        FramesTaken = 068        while self.stop == False:69            FramesTaken = FramesTaken + 1           70        else:71            camera.close()72            camera.stop_preview()73    74    #def StartPreview(self):75        76            77    def StopPreview(self):78        self.stop = True...

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