comparison vampyhost_test.py @ 0:68f3f32565b4

Import the early draft version

+
+import sys
+sys.path.append('/Users/Shared/Development/python-extensions')
+sys.path.append('/Users/Shared/Development/vampy-host-experiments/')
+#from melscale import melscale
+#from melscale import initialize
+import wave 
+from wave import *
+from pylab import *
+# from melscale import *
+from numpy import *
+from pylab import *
+from time import *
+
+from vampyhost import *
+import vampyhost 
+import vampyhost as vh
+#import pyRealTime
+#from pyRealTime import *
+
+
+#deal with an audio file
+wavfile='/Users/Shared/multitrack (small)/mix.wav'
+
+wavobj = wave.open(wavfile,'r')
+samplerate = wavobj.getframerate()
+print "samplerate: ",samplerate
+print "number of samples (frames): ",wavobj.getnframes() #total number of samples 4647744
+channels = wavobj.getnchannels();
+print "channels: ",channels 
+print "sample-width: ",wavobj.getsampwidth() 
+print "position: ",wavobj.tell()
+wavobj.setpos(1000000)
+
+print wavobj.tell()
+audio = wavobj.readframes(1024) #returns an 8-bit buffer
+print wavobj.tell()
+print dir(audio)
+print len(audio)
+wavobj.close()
+
+
+
+rt=realtime(4,70)
+
+#test RealTime Object
+for i in [0,1,2] :
+	if (i==0) : rtl=[]
+	rtl.append(realtime())
+	print ">>>>>RealTime's method: ", rtl[i].values()
+
+
+class feature_example():
+	def __init__(self):
+		self.hasTimestamp
+		self.timestamp
+		self.values
+		self.label
+		
+pluginlist = vh.enumeratePlugins()
+for i,n in enumerate(pluginlist) : print i,":",n
+pluginKey=pluginlist[12];
+
+retval = vh.getLibraryPath(pluginKey)
+print pluginKey
+print retval
+
+print vh.getPluginCategory(pluginKey)
+print vh.getOutputList(pluginKey)
+handle = vh.loadPlugin(pluginKey,samplerate);
+print "\n\nPlugin handle: ",handle
+
+print "Output list of: ",pluginKey,"\n",vh.getOutputList(handle)
+
+#initialise: pluginhandle, channels, stepSize, blockSize
+vh.initialise(handle,1,1024,1024)
+
+rt=frame2RealTime(100000,22050)
+print type(rt)
+
+out=vh.process(handle,audio,rt)
+output = vh.getOutput(handle,1);
+
+print type(output)
+print output
+#print output[1].label
+
+print "_______________OUTPUT TYPE_________:",type(out)
+in_audio = frombuffer(audio,int16,-1,0) 
+out_audio = frombuffer(out,float32,-1,0)
+subplot(211)
+plot(in_audio)
+subplot(212)
+plot(out_audio)
+
+show()
+#do some processing here
+
+#buffer is a multichannel frame or a numpy array containing samples
+#buffer = vh.frame(audiodata,stepSize,blockSize)
+
+#output = vh.process(handle,buffer)
+
+#output is a list of list of features
+
+vh.unloadPlugin(handle);
+vh.unloadPlugin(handle); # test if it chrashes... 
+
+print vh.getOutputList(handle)
+
+#cases:
+#buffer = blockSize : evaluate
+#buffer > blockSize : enframe and zeropad
+#return:
+#oneSamplePerStep, FixedSamplerate : can return numpy array
+#variableSamplerate : list of featres only
+
+#print dir(vampyhost)