scripts: Simple script to extract PNG files from the JSON state dumps.

diff --git a/scripts/jsonextractimages.py b/scripts/jsonextractimages.py
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+#!/usr/bin/env python
+##########################################################################
+#
+# Copyright 2012 Jose Fonseca
+# All Rights Reserved.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
+##########################################################################/
+
+
+'''Simple script to extract PNG files from the JSON state dumps.'''
+
+
+import json
+import optparse
+import base64
+import sys
+
+
+def dumpSurfaces(state, memberName):
+    for name, imageObj in state[memberName].iteritems():
+        data = imageObj['__data__']
+        data = base64.b64decode(data)
+
+        imageName = '%s.png' % name
+        open(imageName, 'wb').write(data)
+        sys.stderr.write('Wrote %s\n' % imageName)
+
+
+def main():
+    optparser = optparse.OptionParser(
+        usage="\n\t%prog [options] <json>")
+
+    (options, args) = optparser.parse_args(sys.argv[1:])
+
+    for arg in args:
+        state = json.load(open(arg, 'rt'), strict=False)
+
+        dumpSurfaces(state, 'textures')
+        dumpSurfaces(state, 'framebuffer')
+
+
+
+if __name__ == '__main__':
+    main()