Import from divmod. Original log message:

r820 | anthony | 2004-10-04 15:28:33 +0200 (Mon, 04 Oct 2004) | 2 lines

Import of PyAlsaAudio, by Casper Wilstrup (cwi@unispeed.dk)



git-svn-id: svn://svn.code.sf.net/p/pyalsaaudio/code/trunk@2 ec2f30ec-7544-0410-870e-f70ca00c83f0

recordtest.py

@@ -0,0 +1,45 @@
+## recordtest.py
+##
+## This is an example of a simple sound capture script.
+##
+## The script opens an ALSA pcm forsound capture. Set
+## various attributes of the capture, and reads in a loop,
+## writing the data to standard out.
+##
+## To test it out do the following:
+## python recordtest.py > out.raw # talk to the microphone
+## aplay -r 8000 -f S16_LE -c 1 out.raw
+
+import alsaaudio
+import sys
+import time
+
+# Open the device in nonblocking capture mode. The last argument could
+# just as well have been zero for blocking mode. Then we could have
+# left out the sleep call in the bottom of the loop
+inp = alsaaudio.openpcm(alsaaudio.PCM_CAPTURE,alsaaudio.PCM_NONBLOCK)
+
+# Set attributes: Mono, 8000 Hz, 16 bit little endian samples
+inp.setchannels(1)
+inp.setrate(8000)
+inp.setformat(alsaaudio.PCM_FORMAT_S16_LE)
+
+# The period size controls the internal number of frames per period.
+# The significance of this parameter is documented in the ALSA api.
+# For our purposes, it is suficcient to know that reads from the device
+# will return this many frames. Each frame being 2 bytes long.
+# This means that the reads below will return either 320 bytes of data
+# or 0 bytes of data. The latter is possible because we are in nonblocking
+# mode.
+inp.setperiodsize(160)
+
+loops = 10000
+while loops > 0:
+  loops -= 1
+  # Read data from device
+  l,data = inp.read()
+  
+  if l:
+    # actual data read. Write it to stdout
+    sys.stdout.write(data)
+  time.sleep(.001)