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103 lines
3.1 KiB
103 lines
3.1 KiB
## License: Apache 2.0. See LICENSE file in root directory.
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## Copyright(c) 2015-2017 Intel Corporation. All Rights Reserved.
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###############################################
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## pybackend example #1 - A general overview ##
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###############################################
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# First import the library
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import pybackend2 as rs
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import time
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def on_frame(profile, f):
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print ("Received %d bytes" % f.frame_size)
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# Accessing image pixels
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p = f.pixels
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print ("First 10 bytes are: ")
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for i in range(10):
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print (hex(p[i]))
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print
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try:
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# Building a device
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backend = rs.create_backend()
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infos = backend.query_uvc_devices()
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print("There are %d connected UVC devices" % len(infos))
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if len(infos) is 0: exit(1)
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info = infos[2]
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dev = backend.create_uvc_device(info)
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print ("VID=%d, PID=%d, MI=%d, UID=%s" % (info.vid, info.pid, info.mi, info.unique_id))
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# Turn on power
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print ("Move device to D0 power state...")
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dev.set_power_state(rs.D0)
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# Configure streaming
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print ("Print list of UVC profiles supported by the device...")
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profiles = dev.get_profiles()
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for p in profiles:
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print (p)
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# save IR VGA setting for later
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if p.width == 640 and p.height == 480 and p.fps == 30 and p.format == 1196574041:
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vga = p
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first = profiles[0]
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print ("Negotiate Probe-Commit for first profile")
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dev.probe_and_commit(first, on_frame)
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# XU controls
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xu = rs.extension_unit(0, 3, 2, rs.guid("C9606CCB-594C-4D25-af47-ccc496435995")) # Define the Depth XU
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dev.init_xu(xu) # initialize depth XU
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ae = dev.get_xu(xu, 0xB, 1) # get XU value. args: XU, control #, # of bytes
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print ("Auto Exposure option is:", ae)
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print ("Setting Auto Exposure option to new value")
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dev.set_xu(xu, 0x0B, [0x00]) # set XU value. args: XU, control #, list of bytes
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ae = dev.get_xu(xu, 0xB, 1)
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print ("New Auto Exposure setting is:", ae)
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# PU controls
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gain = dev.get_pu(rs.option.gain)
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print ("Gain = %d" % gain)
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print ("Setting gain to new value")
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dev.set_pu(rs.option.gain, 32)
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gain = dev.get_pu(rs.option.gain)
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print ("New gain = %d" % gain)
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# Start streaming
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print ("Start listening for callbacks (for all pins)...")
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dev.start_callbacks()
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print ("Start streaming (from all pins)...")
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dev.stream_on()
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print ("Wait for 5 seconds while frames are expected:")
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time.sleep(5)
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# Close device
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print ("Stop listening for new callbacks...")
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dev.stop_callbacks()
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print ("Close the specific pin...")
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dev.close(first)
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# saving frames to disk
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def save_frame(profile, f):
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f.save_png("pybackend_example_1_general_depth_frame.png", 640, 480, f.frame_size / (640*480))
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print ("Saving an IR VGA frame using profile:", vga)
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dev.probe_and_commit(vga, save_frame)
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dev.set_xu(xu, 0x0B, [0x01]) # turn autoexposure back on
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dev.start_callbacks()
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dev.stream_on()
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time.sleep(1)
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dev.close(vga)
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print ("Move device to D3")
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dev.set_power_state(rs.D3)
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pass
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except Exception as e:
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print (e)
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pass |