Work on Scripts.

Add script for spectrograms.
Add Script for 'after' with effects examples.
Add space and dc bias to afters script.
Add docimages_all.py script to call all scripts.
Shared part of scripts extracted into docimages_core.py

scripts/piped-work/docimages_core.py

@@ -0,0 +1,159 @@
+# docimages_core.py
+# Sends commands to get images for the manual.
+# This is the shared part reused in a bunch of scripts.
+
+# Make sure Audacity is running first and that mod-script-pipe is enabled
+# before running this script.
+
+import os
+import sys
+
+def startPipes() :
+    global tofile
+    global fromfile
+    global EOL
+    if( sys.platform  == 'win32' ):
+        print( "pipe-test.py, running on windows" )
+        toname = '\\\\.\\pipe\\ToSrvPipe'
+        fromname = '\\\\.\\pipe\\FromSrvPipe'
+        EOL = '\r\n\0'
+    else:
+        print( "pipe-test.py, running on linux or mac" )
+        toname = '/tmp/audacity_script_pipe.to.' + str(os.getuid())
+        fromname = '/tmp/audacity_script_pipe.from.' + str(os.getuid())
+        EOL = '\n'
+
+    print( "Write to  \"" + toname +"\"" )
+    if not os.path.exists( toname ) :
+       print( " ..does not exist.  Ensure Audacity is running with mod-script-pipe." )
+       sys.exit();
+        
+    print( "Read from \"" + fromname +"\"")
+    if not os.path.exists( fromname ) :
+       print( " ..does not exist.  Ensure Audacity is running with mod-script-pipe." )
+       sys.exit();
+
+    print( "-- Both pipes exist.  Good." )
+
+    tofile = open( toname, 'wt+' )
+    print( "-- File to write to has been opened" )
+    fromfile = open( fromname, 'rt')
+    print( "-- File to read from has now been opened too\r\n" )
+
+
+def sendCommand( command ) :
+    global tofile
+    global EOL
+    print( "Send: >>> \n"+command )
+    tofile.write( command + EOL )	
+    tofile.flush()
+
+def getResponse() :
+    global fromfile
+    result = ''
+    line = ''
+    while line != '\n' :
+        result += line
+        line = fromfile.readline()
+	#print(" I read line:["+line+"]")
+    return result
+
+def doCommand( command ) :
+    sendCommand( command )
+    response = getResponse()
+    print( "Rcvd: <<< \n" + response )
+    return response
+
+def do( command ) :
+    doCommand( command )
+
+def quickTest() :
+    do( 'Help: Command=Help' )
+
+def setup() :
+    global path
+    global sample
+    global sample2
+    path = 'C:\\Users\\James Crook\\'
+    sample ='C:\\Users\\James Crook\\Music\\The Poodle Podcast.wav'
+    sample2 ='C:\\Users\\James Crook\\Music\\PoodlePodStereo.wav'
+    startPipes()
+    do( 'SetProject: X=10 Y=10 Width=850 Height=800' )
+
+def imageSet(name):
+    print("****************** " + name + " ***************************")
+
+def makeWayForTracks(  ) :
+    do( 'Select: First=0 Last=20' )
+    do( 'RemoveTracks' )
+
+def capture( name, what ) :
+    global path
+    do( 'Screenshot: Path="'+path+name+'" CaptureWhat=' + what )
+
+def loadMonoTrack():
+    global sample
+    makeWayForTracks( )
+    do( 'Import2: Filename="'+sample+'"' )
+    do( 'Select: First=0 Last=0 Start=0 End=150')
+    do( 'Trim')
+    do( 'ZoomSel' )
+
+def loadStereoTrack():
+    global sample2
+    makeWayForTracks( )
+    do( 'Import2: Filename="'+sample2+'"' )
+    do( 'Select: First=0 Last=0 Start=0 End=150')
+    do( 'Trim')
+    do( 'ZoomSel' )
+    
+def loadMonoTracks( num ) :
+    makeWayForTracks( )
+    loadMonoTrack()
+    do( 'SetTrack: Track=0 Name="Foxy Lady"')
+    for i in range( 0, num-1 ):
+        do( 'Duplicate' )
+    do( 'FitInWindow' )
+    do( 'Select: Start=55 End=70')
+
+def loadStereoTracks( num ) :
+    makeWayForTracks( )
+    loadStereoTrack()
+    do( 'SetTrack: Track=0 Name="Foxy Lady"')
+    for i in range( 0, num-1 ):
+        do( 'Duplicate' )
+    do( 'FitInWindow' )
+    do( 'Select: Start=55 End=70 First=0 Last=' + str(num*2-1) )
+
+def makeMonoTracks( num ) :
+    makeWayForTracks( )
+    for i in range( 0, num ):
+        do( 'NewMonoTrack' )
+    do( 'SetTrack: Track=0 Name="Foxy Lady"')
+    do( 'Select: Start=0 End=150 First=0 Last=' + str(num-1) )
+    do( 'Chirp: StartAmp=0.5' )
+    do( 'Wahwah' )
+    do( 'FitInWindow' )
+    do( 'Select: Start=55 End=70')
+ 
+def makeStereoTracks( num ) :
+    makeWayForTracks( )
+    for i in range( 0, num ):
+       do( 'NewStereoTrack' )
+    do( 'SetTrack: Track=0 Name="Voodoo Children IN STEREO"')
+    do( 'Select: Start=0 End=150 First=0 Last=' + str(num*2-1) )
+    do( 'Chirp: StartAmp=0.5' )
+    do( 'Wahwah' )
+    do( 'FitInWindow' )
+    do( 'Select: Start=55 End=70')
+
+try:
+    coreLoaded
+except NameError:    
+    setup()
+    coreLoaded=True
+    print( "Set up done")
+else :
+    print( "Already set up")
+
+