Initial commit after change to backbone/SPA

core/utils/waveform.py

@@ -0,0 +1,36 @@
+import subprocess
+import traceback
+import uuid
+import os
+from dss import settings
+
+__author__ = 'fergalm'
+
+def generate_waveform(input_file, output_file):
+    print "Generating waveform"
+    try:
+        working_file = "%s%s.wav" % (settings.DSS_TEMP_PATH, uuid.uuid1())
+        try:
+            print "Starting decode : %s\nInput File: %s\nOutput File: %s" % (settings.DSS_LAME_PATH, input_file, working_file)
+            p = subprocess.call([settings.DSS_LAME_PATH, "--decode", input_file, working_file])
+            print "Finished decode"
+            if os.path.exists(working_file):
+                print "Starting waveform generation"
+                print "%s -m -l -i %s -o -b 000000 %s" % (settings.DSS_WAVE_PATH, working_file, output_file)
+                subprocess.call([settings.DSS_WAVE_PATH, "-t", "-m", "-l", "-i", working_file, "-o", output_file])
+
+                if os.path.isfile(output_file):
+                    os.remove(working_file)
+                    print "Generated waveform"
+                    return output_file
+                else:
+                    print "Failed generating waveform: %s" % output_file
+            else:
+                print "Unable to find working file, did LAME succeed?"
+                return ""
+        except Exception, ex:
+            print "Error generating waveform %s" % (ex)
+
+    except:
+        print "Error generating waveform"
+        traceback.print_exc()