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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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