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Merge pull request #2084 from adafruit/spdx-49
Added SPDX to 30 more files - spdx-49
2 parents 7f58dd9 + 39e5322 commit 8571622

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‎CPX_DAC_Guide/adafruit_logo_vector.py‎

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# SPDX-FileCopyrightText: 2019 Anne Barela for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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### Adafruit logo
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"""Adafruit logo created from bitmap,

‎CPX_DAC_Guide/code.py‎

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# SPDX-FileCopyrightText: 2019 Kevin J. Walters for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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### scope-xy-adafruitlogo v1.0
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"""Output a logo to an oscilloscope in X-Y mode on an Adafruit M4

‎CPX_DAC_Guide/python/pngtowav.py‎

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#!/usr/bin/python3
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### pngtowav v1.0
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"""Convert a list of png images to pseudo composite video in wav file form.
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This is Python code not intended for running on a microcontroller board.
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"""
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### MIT License
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### Copyright (c) 2019 Kevin J. Walters
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### Permission is hereby granted, free of charge, to any person obtaining a copy
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### of this software and associated documentation files (the "Software"), to deal
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### in the Software without restriction, including without limitation the rights
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### to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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### copies of the Software, and to permit persons to whom the Software is
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### furnished to do so, subject to the following conditions:
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20-
### The above copyright notice and this permission notice shall be included in all
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### copies or substantial portions of the Software.
22-
23-
### THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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### IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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### FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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### AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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### LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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### OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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### SOFTWARE.
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import getopt
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import sys
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import array
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import wave
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import imageio
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### globals
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### pylint: disable=invalid-name
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### start_offset of 1 can help if triggering on oscilloscope
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### is missing alternate lines
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debug = 0
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verbose = False
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movie_file = False
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output_filename = "dacanim.wav"
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fps = 50
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threshold = 128 ### pixel level
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replaceforsync = False
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start_offset = 1
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max_dac_v = 3.3
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### 16 bit wav files always use signed representation for data
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dac_offtop = 2**15-1 ### 3.30V
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dac_sync = -2**15 ### 0.00V
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### image from 3.00V to 0.30V
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dac_top = round(3.00 / max_dac_v * (2**16-1)) - 2**15
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dac_bottom = round(0.30 / max_dac_v * (2**16-1)) - 2**15
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60-
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def usage(exit_code): ### pylint: disable=missing-docstring
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print("pngtowav: "
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+ "[-d] [-f fps] [-h] [-m] [-o outputfilename] [-r] [-s lineoffset] [-t threshold] [-v]",
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file=sys.stderr)
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if exit_code is not None:
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sys.exit(exit_code)
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def image_to_dac(img, row_offset, first_pix, dac_y_range):
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"""Convert a single image to DAC output."""
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dac_out = array.array("h", [])
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img_height, img_width = img.shape
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if verbose:
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print("W,H", img_width, img_height)
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for row_o in range(img_height):
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row = (row_o + row_offset) % img_height
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### Currently using 0 to (n-1)/n range
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y_pos = round(dac_top - row / (img_height - 1) * dac_y_range)
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if verbose:
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print("Adding row", row, "at y_pos", y_pos)
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dac_out.extend(array.array("h",
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[dac_sync]
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+ [y_pos if x >= threshold else dac_offtop
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for x in img[row, first_pix:]]))
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return dac_out, img_width, img_height
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def write_wav(filename, data, framerate):
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"""Create one channel 16bit wav file."""
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wav_file = wave.open(filename, "w")
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nchannels = 1
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sampwidth = 2
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nframes = len(data)
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comptype = "NONE"
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compname = "not compressed"
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if verbose:
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print("Writing wav file", filename, "at rate", framerate,
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"with", nframes, "samples")
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wav_file.setparams((nchannels, sampwidth, framerate, nframes,
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comptype, compname))
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wav_file.writeframes(data)
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wav_file.close()
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def main(cmdlineargs): ### pylint: disable=too-many-branches
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"""main(args)"""
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global debug, fps, movie_file, output_filename, replaceforsync ### pylint: disable=global-statement
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global threshold, start_offset, verbose ### pylint: disable=global-statement
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try:
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opts, args = getopt.getopt(cmdlineargs,
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"f:hmo:rs:t:v", ["help", "output="])
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except getopt.GetoptError as err:
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print(err,
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file=sys.stderr)
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usage(2)
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for opt, arg in opts:
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if opt == "-d": ### pylint counts these towards too-many-branches :(
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debug = 1
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elif opt == "-f":
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fps = int(arg)
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elif opt in ("-h", "--help"):
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usage(0)
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elif opt == "-m":
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movie_file = True
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elif opt in ("-o", "--output"):
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output_filename = arg
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elif opt == "-r":
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replaceforsync = True
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elif opt == "-s":
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start_offset = int(arg)
134-
elif opt == "-t":
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threshold = int(arg)
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elif opt == "-v":
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verbose = True
138-
else:
139-
print("Internal error: unhandled option",
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file=sys.stderr)
141-
sys.exit(3)
142-
143-
dac_samples = array.array("h", [])
144-
145-
### Decide whether to replace first column with sync pulse
146-
### or add it as an additional column
147-
first_pix = 1 if replaceforsync else 0
148-
149-
### Read each frame, either
150-
### many single image filenames in args or
151-
### one or more video (animated gifs) (needs -m on command line)
152-
dac_y_range = dac_top - dac_bottom
153-
row_offset = 0
154-
for arg in args:
155-
if verbose:
156-
print("PROCESSING", arg)
157-
if movie_file:
158-
images = imageio.mimread(arg)
159-
else:
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images = [imageio.imread(arg)]
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for img in images:
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img_output, width, height = image_to_dac(img, row_offset,
164-
first_pix, dac_y_range)
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dac_samples.extend(img_output)
166-
row_offset += start_offset
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168-
write_wav(output_filename, dac_samples,
169-
(width + (1 - first_pix)) * height * fps)
170-
171-
172-
if __name__ == "__main__":
173-
main(sys.argv[1:])
1+
# SPDX-FileCopyrightText: 2019 Kevin J. Walters for Adafruit Industries
2+
#
3+
# SPDX-License-Identifier: MIT
4+
5+
#!/usr/bin/python3
6+
7+
### pngtowav v1.0
8+
"""Convert a list of png images to pseudo composite video in wav file form.
9+
10+
This is Python code not intended for running on a microcontroller board.
11+
"""
12+
13+
### MIT License
14+
15+
### Copyright (c) 2019 Kevin J. Walters
16+
17+
### Permission is hereby granted, free of charge, to any person obtaining a copy
18+
### of this software and associated documentation files (the "Software"), to deal
19+
### in the Software without restriction, including without limitation the rights
20+
### to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
21+
### copies of the Software, and to permit persons to whom the Software is
22+
### furnished to do so, subject to the following conditions:
23+
24+
### The above copyright notice and this permission notice shall be included in all
25+
### copies or substantial portions of the Software.
26+
27+
### THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
28+
### IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
29+
### FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
30+
### AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
31+
### LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
32+
### OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33+
### SOFTWARE.
34+
35+
import getopt
36+
import sys
37+
import array
38+
import wave
39+
40+
import imageio
41+
42+
43+
### globals
44+
### pylint: disable=invalid-name
45+
### start_offset of 1 can help if triggering on oscilloscope
46+
### is missing alternate lines
47+
debug = 0
48+
verbose = False
49+
movie_file = False
50+
output_filename = "dacanim.wav"
51+
fps = 50
52+
threshold = 128 ### pixel level
53+
replaceforsync = False
54+
start_offset = 1
55+
56+
max_dac_v = 3.3
57+
### 16 bit wav files always use signed representation for data
58+
dac_offtop = 2**15-1 ### 3.30V
59+
dac_sync = -2**15 ### 0.00V
60+
### image from 3.00V to 0.30V
61+
dac_top = round(3.00 / max_dac_v * (2**16-1)) - 2**15
62+
dac_bottom = round(0.30 / max_dac_v * (2**16-1)) - 2**15
63+
64+
65+
def usage(exit_code): ### pylint: disable=missing-docstring
66+
print("pngtowav: "
67+
+ "[-d] [-f fps] [-h] [-m] [-o outputfilename] [-r] [-s lineoffset] [-t threshold] [-v]",
68+
file=sys.stderr)
69+
if exit_code is not None:
70+
sys.exit(exit_code)
71+
72+
73+
def image_to_dac(img, row_offset, first_pix, dac_y_range):
74+
"""Convert a single image to DAC output."""
75+
dac_out = array.array("h", [])
76+
77+
img_height, img_width = img.shape
78+
if verbose:
79+
print("W,H", img_width, img_height)
80+
81+
for row_o in range(img_height):
82+
row = (row_o + row_offset) % img_height
83+
### Currently using 0 to (n-1)/n range
84+
y_pos = round(dac_top - row / (img_height - 1) * dac_y_range)
85+
if verbose:
86+
print("Adding row", row, "at y_pos", y_pos)
87+
dac_out.extend(array.array("h",
88+
[dac_sync]
89+
+ [y_pos if x >= threshold else dac_offtop
90+
for x in img[row, first_pix:]]))
91+
return dac_out, img_width, img_height
92+
93+
94+
def write_wav(filename, data, framerate):
95+
"""Create one channel 16bit wav file."""
96+
wav_file = wave.open(filename, "w")
97+
nchannels = 1
98+
sampwidth = 2
99+
nframes = len(data)
100+
comptype = "NONE"
101+
compname = "not compressed"
102+
if verbose:
103+
print("Writing wav file", filename, "at rate", framerate,
104+
"with", nframes, "samples")
105+
wav_file.setparams((nchannels, sampwidth, framerate, nframes,
106+
comptype, compname))
107+
wav_file.writeframes(data)
108+
wav_file.close()
109+
110+
111+
def main(cmdlineargs): ### pylint: disable=too-many-branches
112+
"""main(args)"""
113+
global debug, fps, movie_file, output_filename, replaceforsync ### pylint: disable=global-statement
114+
global threshold, start_offset, verbose ### pylint: disable=global-statement
115+
116+
try:
117+
opts, args = getopt.getopt(cmdlineargs,
118+
"f:hmo:rs:t:v", ["help", "output="])
119+
except getopt.GetoptError as err:
120+
print(err,
121+
file=sys.stderr)
122+
usage(2)
123+
for opt, arg in opts:
124+
if opt == "-d": ### pylint counts these towards too-many-branches :(
125+
debug = 1
126+
elif opt == "-f":
127+
fps = int(arg)
128+
elif opt in ("-h", "--help"):
129+
usage(0)
130+
elif opt == "-m":
131+
movie_file = True
132+
elif opt in ("-o", "--output"):
133+
output_filename = arg
134+
elif opt == "-r":
135+
replaceforsync = True
136+
elif opt == "-s":
137+
start_offset = int(arg)
138+
elif opt == "-t":
139+
threshold = int(arg)
140+
elif opt == "-v":
141+
verbose = True
142+
else:
143+
print("Internal error: unhandled option",
144+
file=sys.stderr)
145+
sys.exit(3)
146+
147+
dac_samples = array.array("h", [])
148+
149+
### Decide whether to replace first column with sync pulse
150+
### or add it as an additional column
151+
first_pix = 1 if replaceforsync else 0
152+
153+
### Read each frame, either
154+
### many single image filenames in args or
155+
### one or more video (animated gifs) (needs -m on command line)
156+
dac_y_range = dac_top - dac_bottom
157+
row_offset = 0
158+
for arg in args:
159+
if verbose:
160+
print("PROCESSING", arg)
161+
if movie_file:
162+
images = imageio.mimread(arg)
163+
else:
164+
images = [imageio.imread(arg)]
165+
166+
for img in images:
167+
img_output, width, height = image_to_dac(img, row_offset,
168+
first_pix, dac_y_range)
169+
dac_samples.extend(img_output)
170+
row_offset += start_offset
171+
172+
write_wav(output_filename, dac_samples,
173+
(width + (1 - first_pix)) * height * fps)
174+
175+
176+
if __name__ == "__main__":
177+
main(sys.argv[1:])

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