darktable Script to play music during a Slideshow

contrib/slideshowMusic.lua

@@ -0,0 +1,55 @@
+--[[
+    This file is part of darktable,
+    Copyright 2014 by Tobias Jakobs
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+]]
+--[[
+darktable Script to play music during a Slideshow
+
+You need rhythmbox-client installed to use this script
+
+USAGE
+* require this script from your main lua file
+]]
+   
+dt = require "darktable"
+dt.configuration.check_version(...,{2,0,1})
+
+local function playSlideshowMusic(_, old_view, new_view)
+  local filename
+
+  filename = dt.preferences.read("slideshowMusic","SlideshowMusic","string")
+
+  local playCommand, stopCommand
+
+  if (new_view.id == "slideshow") then
+    playCommand = 'rhythmbox-client --play-uri="'..filename..'"'
+		
+    dt.print_error(playCommand)
+    os.execute(playCommand)
+    --coroutine.yield("RUN_COMMAND", playCommand) 
+  else
+    stopCommand = "rhythmbox-client --pause"
+    dt.print_error(stopCommand)
+    os.execute(stopCommand)
+    --coroutine.yield("RUN_COMMAND", stopCommand) 
+  end
+end
+
+-- Preferences
+dt.preferences.register("slideshowMusic", "SlideshowMusic", "file", "Slideshow background music file", "", "")
+
+-- Register
+dt.register_event("view-changed",playSlideshowMusic)