debianmacno-cups
Last change
on this file since e01a3af was
e01a3af,
checked in by Mats Ahlgren <mats@…>, 14 years ago
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the alsa volume number is soundcard-dependent, and may not be linear;
nevertheless, volume adjust now steps in smaller (yet still noticeable)
ramps of roughly +/-3dB as replicated on current hardware; this may
vary between hardware (check with 'volume-get'); if it does, one can
just grab the dB and ramp the dB linearly by going amixer set PCM XdB
where X is an *absolute* setting
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-
Property mode set to
100755
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File size:
1.1 KB
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Rev | Line | |
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[3ee56cf] | 1 | #!/usr/bin/python |
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| 2 | |
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| 3 | from __future__ import division |
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| 4 | from subprocess import * |
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| 5 | import sys |
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| 6 | import math |
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| 7 | import time |
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| 8 | import os |
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| 9 | j = os.path.join |
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| 10 | |
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| 11 | arg = sys.argv[1] |
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| 12 | currentDir = os.path.split(__file__)[0] |
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| 13 | #sys.path[:0] = [currentDir] |
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| 14 | |
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| 15 | def getVolume(): |
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| 16 | """ |
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| 17 | Returns current PCM volume percentage as int |
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| 18 | """ |
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| 19 | v = int(Popen(j(currentDir,'volume-get'), stdout=PIPE).communicate()[0].split()[0]) |
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| 20 | return v |
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| 21 | |
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| 22 | def setVolume(percent): |
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| 23 | """ |
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| 24 | Over the course of 3 seconds, in steps of 0.3sec, linearly sets |
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| 25 | volume between [current vol]-->[new vol] |
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| 26 | """ |
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| 27 | v = getVolume() |
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| 28 | newV = percent |
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| 29 | for i in range(10): |
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| 30 | frac = i/10 |
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| 31 | tempV = int(v + (newV-v)*frac) |
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| 32 | command = ['amixer', 'set', 'PCM', str(tempV)] |
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[e01a3af] | 33 | print tempV |
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| 34 | sys.stdout.flush() |
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[3ee56cf] | 35 | call(command, stdout=PIPE) |
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| 36 | time.sleep(0.3) |
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| 37 | |
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| 38 | v = getVolume() |
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| 39 | map = { |
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[e01a3af] | 40 | '+': int(math.ceil( v*1.13 + .001 )), |
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| 41 | '-': int(math.floor( v/1.13 + .001 )) |
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[3ee56cf] | 42 | } |
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| 43 | |
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| 44 | newVolume = map[arg] |
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[e01a3af] | 45 | print 'Smoothly modifying over 3 seconds... (from %i)' % v |
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[3ee56cf] | 46 | sys.stdout.flush() |
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| 47 | setVolume(newVolume) |
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| 48 | print 'Volume adjust finished.' |
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| 49 | call([j(currentDir,'volume-zephyr')]) |
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