light9 Changeset - 1f877950ad28

Changeset - 1f877950ad28

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Drew Perttula - 11 years ago 2014-06-04 08:30:45
drewp@bigasterisk.com

new picamserve for raspberry pi camera -> http, especially with crop control
Ignore-this: 38fc34a6eff577c05129df87d6133a95

5 files changed with 132 insertions and 1 deletions:

bin/picamserve

bin/run_local.py

light9/vidref/gui.js

light9/vidref/index.html

makefile

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bin/picamserve

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@@ new file 100644 @@
 #!env_pi/bin/python
 from __future__ import division
 from run_local import log
 import sys;sys.path.append('/usr/lib/python2.7/dist-packages/')
 import io, logging, traceback
 import cyclone.web
 from twisted.internet import reactor
 from light9 import prof
 try:
     import picamera
     cameraCls = picamera.PiCamera
 except ImportError:
     class cameraCls(object):
         def __enter__(self): return self
         def __exit__(self): pass
         def capture(self, out, *a, **kw):
             out.write(open('yuv.demo').read())
 @prof.logTime
 def getFrame(c, arg):
     res = int(arg('res', 480))
     c.resolution = {
 : (640, 480),
 : (1920, 1080),
 : (2592, 1944),
     }[res]
     c.shutter_speed = int(arg('shutter', 50000))
     c.exposure_mode = arg('exposure_mode', 'fixedfps')
     c.awb_mode = arg('awb_mode', 'off')
     c.brightness = int(arg('brightness', 50))
     c.awb_gains = (float(arg('redgain', 1)), float(arg('bluegain', 1)))
     c.crop = (float(arg('x', 0)), float(arg('y', 0)),
               float(arg('w', 1)), float(arg('h', 1)))
     rw = rh = int(arg('resize', 100))
     # width 1920, showing w=.3 of image, resize=100 -> scale is 100/.3*1920
     # scl is [ output px / camera px ]
     scl1 = rw / (c.crop[2] * c.resolution[0])
     scl2 = rh / (c.crop[3] * c.resolution[1])
     if scl1 < scl2:
         # width is the constraint; reduce height to the same scale
         rh = int(scl1 * c.crop[3] * c.resolution[1])
     else:
         # height is the constraint
         rw = int(scl2 * c.crop[2] * c.resolution[0])
     c.ISO = int(arg('iso', 250))
     out = io.BytesIO('w')
     prof.logTime(c.capture)(out, 'jpeg', use_video_port=True, resize=(rw, rh))
     return out.getvalue()
 class Pic(cyclone.web.RequestHandler):
     def get(self):
         try:
             self.set_header('Content-Type', 'image/jpeg')
             self.write(getFrame(self.settings.camera, self.get_argument))
         except Exception:
             traceback.print_exc()
 log.setLevel(logging.INFO)
 with cameraCls() as camera:
     port = 8001
     reactor.listenTCP(port, cyclone.web.Application(handlers=[
         (r'/pic', Pic),
         (r'/static/(.*)', cyclone.web.StaticFileHandler, {'path': 'static/'}),
         (r'/(|gui.js)', cyclone.web.StaticFileHandler, {'path': 'light9/vidref/',
                                                  'default_filename': 'index.html'}),
         ], debug=True, camera=camera))
     log.info("serving on %s" % port)
     reactor.run()

bin/run_local.py

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@@ @@ -7,26 +7,30 @@ sys.path.insert(0,os.path.join(os.path.d @@
 from twisted.python.failure import Failure
 import Tkinter
 def rce(self, exc, val, tb):
     sys.stderr.write("Exception in Tkinter callback\n")
     if True:
         sys.excepthook(exc, val, tb)
     else:
         Failure(val, exc, tb).printDetailedTraceback()
 Tkinter.Tk.report_callback_exception = rce
 import coloredlogs, logging, time, faulthandler
 import coloredlogs, logging, time
 try:
     import faulthandler
 faulthandler.enable()
 except ImportError:
     pass
 log = logging.getLogger()
 class CSH(coloredlogs.ColoredStreamHandler):
     def render_timestamp(self, created):
         return time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(created)) + (
             "%.3f" % (created % 1)).lstrip('0')
     def render_name(self, name):
         return name
 log.addHandler(CSH(show_hostname=False, show_name=True))

light9/vidref/gui.js

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@@ new file 100644 @@
 var model = {
     shutters: [],
 };
 for (var s=0; s < 1; s+=.04) {
     var micro = Math.floor(Math.pow(s, 3) * 100000)
     if (micro == 0) {
         continue;
+    }
     model.shutters.push(micro);
+}
 ko.applyBindings(model)

light9/vidref/index.html

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@@ new file 100644 @@
 <!doctype html>
 <html>
   <head>
     <title>picamserve</title>
     <meta charset="utf-8" />
     <style>
       .tile {
         display: inline-block;
        border: 1px solid gray;
        margin: 3px;
        padding: 2px;
+       }
      .tile img {
+       }
     </style>
   </head>
   <body>
     <section>
       Whole view
       <div class="tile">
         <img src="pic?resize=500&awb_mode=auto&exposure_mode=auto&shutter=100000">
       </div>
     </section>
   <section>
     Shutters
       <div data-bind="foreach: shutters">
         <div class="tile">
           <div><img data-bind="attr: {src: 'pic?res=480&resize=200&x=.5&y=.3&w=.5&h=.2&awb_mode=auto&exposure_mode=auto&shutter='+$data}"></div>
           <span data-bind="text: ($data / 1000) + ' ms'"></span>
         </div>
       </div>
     </section>
     <script src="static/knockout-3.1.0.js"></script>
     <script src="gui.js"></script>
   </body>
 </html>

makefile

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@@ @@ -42,12 +42,20 @@ tkdnd_build: @@
 	# then apply tkdnd-patch-on-r95 to that
 	cd tkdnd/trunk
 	./configure
 	make
 bin/ascoltami2: gst_packages link_to_sys_packages
 gst_packages:
 	sudo aptitude install python-gi gir1.2-gst-plugins-base-1.0 libgirepository-1.0-1 gir1.2-gstreamer-1.0 gstreamer1.0-tools gstreamer1.0-plugins-good gstreamer1.0-pulseaudio gir1.2-goocanvas-2.0-9
 packages:
 	sudo aptitude install coffeescript freemind normalize-audio audacity python-pygoocanvas python-pygame
 raspberry_pi_virtualenv:
 	mkdir -p env_pi
 	virtualenv --system-site-packages env_pi
 raspberry_pi_packages:
 	sudo apt-get install python-picamera python-twisted
 	env_pi/bin/pip install cyclone coloredlogs

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