From a19a216bc60160c162e616145ef091dd18ce4e61 Mon Sep 17 00:00:00 2001
From: Skip Montanaro <skip.montanaro@gmail.com>
Date: Tue, 16 Feb 2021 14:40:46 -0600
Subject: Python 0.9.1 as posted in alt.sources

---
 demo/sgi/audio/README  |  5 ++++
 demo/sgi/audio/play.py | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 80 insertions(+)
 create mode 100644 demo/sgi/audio/README
 create mode 100755 demo/sgi/audio/play.py

(limited to 'demo/sgi/audio')

diff --git a/demo/sgi/audio/README b/demo/sgi/audio/README
new file mode 100644
index 0000000..17dc9b2
--- /dev/null
+++ b/demo/sgi/audio/README
@@ -0,0 +1,5 @@
+Programs that demonstrate the use of the audio device on the SGI 4D/25.
+These require the built-in module 'audio'.
+
+play Read a sound sample from a file and play it through the
+ speaker. Options to set volume, sampling rate etc.
diff --git a/demo/sgi/audio/play.py b/demo/sgi/audio/play.py
new file mode 100755
index 0000000..8f6a802
--- /dev/null
+++ b/demo/sgi/audio/play.py
@@ -0,0 +1,75 @@
+#!/ufs/guido/bin/sgi/python
+
+import sys
+import audio
+
+import string
+import getopt
+import auds
+
+debug = []
+
+DEF_RATE = 3
+
+def main():
+ #
+ gain = 100
+ rate = 0
+ starter = audio.write
+ stopper = 0
+ #
+ optlist, args = getopt.getopt(sys.argv[1:], 'adg:r:')
+ #
+ for optname, optarg in optlist:
+ if 0:
+ pass
+ elif optname = '-d':
+ debug.append(1)
+ elif optname = '-g':
+ gain = string.atoi(optarg)
+ if not (0 < gain < 256):
+ raise optarg.error, '-g gain out of range'
+ elif optname = '-r':
+ rate = string.atoi(optarg)
+ if not (1 <= rate <= 3):
+ raise optarg.error, '-r rate out of range'
+ elif optname = '-a':
+ starter = audio.start_playing
+ stopper = audio.wait_playing
+ #
+ audio.setoutgain(gain)
+ audio.setrate(rate)
+ #
+ if not args:
+ play(starter, rate, auds.loadfp(sys.stdin))
+ else:
+ real_stopper = 0
+ for file in args:
+ if real_stopper:
+ real_stopper()
+ play(starter, rate, auds.load(file))
+ real_stopper = stopper
+
+def play(starter, rate, data):
+ magic = data[:4]
+ if magic = '0008':
+ mrate = 3
+ elif magic = '0016':
+ mrate = 2
+ elif magic = '0032':
+ mrate = 1
+ else:
+ mrate = 0
+ if mrate:
+ data = data[4:]
+ else:
+ mrate = DEF_RATE
+ if not rate: rate = mrate
+ audio.setrate(rate)
+ starter(data)
+
+try:
+ main()
+finally:
+ audio.setoutgain(0)
+ audio.done()
-- 
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