diff options
Diffstat (limited to 'plugins/camera_plugin.py')
| -rw-r--r-- | plugins/camera_plugin.py | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/plugins/camera_plugin.py b/plugins/camera_plugin.py deleted file mode 100644 index f5beb62..0000000 --- a/plugins/camera_plugin.py +++ /dev/null @@ -1,171 +0,0 @@ -#!/usr/bin/env python -#Copyright (c) 2011 Walter Bender -# -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - -import gst -import gtk -from fcntl import ioctl - -from lib.camera.tacamera import Camera -from lib.camera.v4l2 import v4l2_control, V4L2_CID_AUTOGAIN, VIDIOC_G_CTRL, \ - VIDIOC_S_CTRL - -from plugin import Plugin - -from TurtleArt.tapalette import make_palette -from TurtleArt.talogo import media_blocks_dictionary, primitive_dictionary -from TurtleArt.tautils import get_path, debug_output - -import logging -_logger = logging.getLogger('turtleart-activity camera plugin') - - -class Camera_plugin(Plugin): - - def __init__(self, parent): - self._parent = parent - self._status = False - - v4l2src = gst.element_factory_make('v4l2src') - if v4l2src.props.device_name is not None: - - if self._parent.running_sugar: - self._imagepath = get_path(self._parent.activity, - 'data/turtlepic.png') - else: - self._imagepath = '/tmp/turtlepic.png' - self._camera = Camera(self._imagepath) - - self._status = True - - def setup(self): - palette = make_palette('sensor', - colors=["#FF6060", "#A06060"], - help_string=_('Palette of sensor blocks')) - - # set up camera-specific blocks - if self._status: - primitive_dictionary['luminance'] = self.prim_read_camera - palette.add_block('luminance', - style='box-style', - label=_('brightness'), - help_string=_('light level detected by camera'), - value_block=True, - prim_name='luminance') - self._parent.lc.def_prim('luminance', 0, - lambda self: primitive_dictionary['luminance'](True)) - - # Depreciated block - primitive_dictionary['read_camera'] = self.prim_read_camera - palette.add_block('read_camera', - hidden=True, - style='box-style', - label=_('brightness'), - help_string=_('Average RGB color from camera \ -is pushed to the stack'), - value_block=True, - prim_name='luminance') - self._parent.lc.def_prim('read_camera', 0, - lambda self: primitive_dictionary['read_camera'](True)) - - media_blocks_dictionary['camera'] = self.prim_take_picture - palette.add_block('camera', - style='box-style-media', - label=' ', - default='CAMERA', - help_string=_('camera output'), - content_block=True) - - def stop(self): - # This gets called by the stop button - if self._status: - self._camera.stop_camera_input() - - def _status_report(self): - debug_output('Reporting camera status: %s' % (str(self._status))) - return self._status - - # Block primitives used in talogo - - def prim_take_picture(self): - if self._status: - ''' method called by media block ''' - self._camera.save_camera_input_to_file() - self._camera.stop_camera_input() - self._parent.lc.filepath = self._imagepath - - def prim_read_camera(self, luminance_only=False): - """ Read average pixel from camera and push b, g, r to the stack """ - pixbuf = None - array = None - w = int((self._parent.canvas.width * self._parent.lc.scale) / 100.) - h = int((self._parent.canvas.height * self._parent.lc.scale) / 100.) - if w > 0 and h > 0 and self._status: - try: - self._video_capture_device = open('/dev/video0', 'rw') - except: - self._video_capture_device = None - _logger.debug('video capture device not available') - - if self._video_capture_device is not None: - self._ag_control = v4l2_control(V4L2_CID_AUTOGAIN) - try: - ioctl(self._video_capture_device, VIDIOC_G_CTRL, - self._ag_control) - self._ag_control.value = 0 # disable AUTOGAIN - ioctl(self._video_capture_device, VIDIOC_S_CTRL, - self._ag_control) - except: - _logger.debug('AUTOGAIN control not available') - pass - - if self._video_capture_device is not None: - self._video_capture_device.close() - - self._camera.save_camera_input_to_file() - self._camera.stop_camera_input() - pixbuf = gtk.gdk.pixbuf_new_from_file_at_size(self._imagepath, - w, h) - try: - array = pixbuf.get_pixels() - except: - array = None - - if array is not None: - length = len(array) / 3 - r, g, b, i = 0, 0, 0, 0 - for j in range(length): - r += ord(array[i]) - i += 1 - g += ord(array[i]) - i += 1 - b += ord(array[i]) - i += 1 - if luminance_only: - lum = int((r * 0.3 + g * 0.6 + b * 0.1) / length) - self._parent.lc.update_label_value('luminance', lum) - return lum - else: - self._parent.lc.heap.append(int((b / length))) - self._parent.lc.heap.append(int((g / length))) - self._parent.lc.heap.append(int((r / length))) - else: - if luminance_only: - return -1 - else: - self._parent.lc.heap.append(-1) - self._parent.lc.heap.append(-1) - self._parent.lc.heap.append(-1) |