#!/usr/bin/env python
# coding: utf-8

# # CameraStream
# A [CameraStream](api.rst#ipywebrtc.webrtc.CameraStream) is a [MediaStream](api.rst#ipywebrtc.webrtc.MediaStream) from an attached camera device or webcam.

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from ipywebrtc import CameraStream, ImageRecorder


# ## With constraints

# You can pass [constraints](api.rst#ipywebrtc.webrtc.CameraStream.constraints) to the camera:

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camera = CameraStream(constraints=
                      {'facing_mode': 'user',
                       'audio': False,
                       'video': { 'width': 640, 'height': 480 }
                       })
camera


# ## Front and back camera

# Or use the two convenience methods:
# 
# * [CameraStream.facing_user](http://localhost:8000/api.rst#ipywebrtc.webrtc.CameraStream.facing_user)
# * [CameraStream.facing_environment](http://localhost:8000/api.rst#ipywebrtc.webrtc.CameraStream.facing_environment)

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# this is a shorter way to get the user facing camera
front_camera = CameraStream.facing_user(audio=False)
# or the back facing camera
back_camera = CameraStream.facing_environment(audio=False)


# In[4]:


back_camera


# ## Record images from the camera

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image_recorder = ImageRecorder(stream=camera)
image_recorder


# In[6]:


import PIL.Image
import PIL.ImageFilter
import io
im = PIL.Image.open(io.BytesIO(image_recorder.image.value))


# In[7]:


im.filter(PIL.ImageFilter.BLUR)


# In[8]:


import numpy as np
im_array = np.array(im)
im_array


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