Changeset 5408

Timestamp:

10/13/07 19:24:49 (6 years ago)

Author:

jgaeddert

Message:

adding tests for audio playback and capture

Location:

experimental/components/rc2007_gui

Files:

• WorkModules.py (modified) (1 diff)
• audio_capture_test.py (added)
• audio_playback_test.py (added)
• test_mic.py (modified) (1 prop)

experimental/components/rc2007_gui/WorkModules.py

@@ -38 +38 @@
 
 import cvsd     # this is in my rc2007_gui package directory
+
+def pack_audio(v, num_channels=1):
+    '''packs a list of signed shorts into a string which can be read by
+    the audio device'''
+    s = ''
+    for i in v:
+        s += struct.pack('h', i)
+        if num_channels==2:
+            s+= '\0\0'
+    return s
+
+def unpack_audio(s, num_channels=1):
+    '''unpacks a string into a vector'''
+    v = []
+    if num_channels==2:
+        d = 4
+    else:
+        d = 2
+
+    for i in range(0,len(s),d):
+        v.append( struct.unpack('h', s[i:(i+2)])[0] )
+    return v
+
 
 class txWorkClass: