kaitai: adjustments and rearrangements for python2/3 compat

1 files changed, 107 insertions, 0 deletions

diff --git a/python/examples/kaitai/vp8_ivf.py b/python/examples/kaitai/vp8_ivf.py
new file mode 100644
index 00000000..05c19326
--- /dev/null
+++ b/python/examples/kaitai/vp8_ivf.py
@@ -0,0 +1,107 @@
+# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild
+
+from pkg_resources import parse_version
+from .kaitaistruct import __version__ as ks_version, KaitaiStruct, KaitaiStream, BytesIO
+import collections
+
+
+if parse_version(ks_version) < parse_version('0.7'):
+    raise Exception("Incompatible Kaitai Struct Python API: 0.7 or later is required, but you have %s" % (ks_version))
+
+class Vp8Ivf(KaitaiStruct):
+    """IVF is a simple container format for raw VP8 data, which is an open
+    and royalty-free video compression format, currently developed by
+    Google.
+    
+    Test .ivf files are available at https://chromium.googlesource.com/webm/vp8-test-vectors
+    
+    .. seealso::
+       Source - https://wiki.multimedia.cx/index.php/IVF
+    """
+    SEQ_FIELDS = ["magic1", "version", "len_header", "codec", "width", "height", "framerate", "timescale", "num_frames", "unused", "image_data"]
+    def __init__(self, _io, _parent=None, _root=None):
+        self._io = _io
+        self._parent = _parent
+        self._root = _root if _root else self
+        self._debug = collections.defaultdict(dict)
+
+    def _read(self):
+        self._debug['magic1']['start'] = self._io.pos()
+        self.magic1 = self._io.ensure_fixed_contents(b"\x44\x4B\x49\x46")
+        self._debug['magic1']['end'] = self._io.pos()
+        self._debug['version']['start'] = self._io.pos()
+        self.version = self._io.read_u2le()
+        self._debug['version']['end'] = self._io.pos()
+        self._debug['len_header']['start'] = self._io.pos()
+        self.len_header = self._io.read_u2le()
+        self._debug['len_header']['end'] = self._io.pos()
+        self._debug['codec']['start'] = self._io.pos()
+        self.codec = self._io.ensure_fixed_contents(b"\x56\x50\x38\x30")
+        self._debug['codec']['end'] = self._io.pos()
+        self._debug['width']['start'] = self._io.pos()
+        self.width = self._io.read_u2le()
+        self._debug['width']['end'] = self._io.pos()
+        self._debug['height']['start'] = self._io.pos()
+        self.height = self._io.read_u2le()
+        self._debug['height']['end'] = self._io.pos()
+        self._debug['framerate']['start'] = self._io.pos()
+        self.framerate = self._io.read_u4le()
+        self._debug['framerate']['end'] = self._io.pos()
+        self._debug['timescale']['start'] = self._io.pos()
+        self.timescale = self._io.read_u4le()
+        self._debug['timescale']['end'] = self._io.pos()
+        self._debug['num_frames']['start'] = self._io.pos()
+        self.num_frames = self._io.read_u4le()
+        self._debug['num_frames']['end'] = self._io.pos()
+        self._debug['unused']['start'] = self._io.pos()
+        self.unused = self._io.read_u4le()
+        self._debug['unused']['end'] = self._io.pos()
+        self._debug['image_data']['start'] = self._io.pos()
+        self.image_data = [None] * (self.num_frames)
+        for i in range(self.num_frames):
+            if not 'arr' in self._debug['image_data']:
+                self._debug['image_data']['arr'] = []
+            self._debug['image_data']['arr'].append({'start': self._io.pos()})
+            _t_image_data = self._root.Blocks(self._io, self, self._root)
+            _t_image_data._read()
+            self.image_data[i] = _t_image_data
+            self._debug['image_data']['arr'][i]['end'] = self._io.pos()
+
+        self._debug['image_data']['end'] = self._io.pos()
+
+    class Blocks(KaitaiStruct):
+        SEQ_FIELDS = ["entries"]
+        def __init__(self, _io, _parent=None, _root=None):
+            self._io = _io
+            self._parent = _parent
+            self._root = _root if _root else self
+            self._debug = collections.defaultdict(dict)
+
+        def _read(self):
+            self._debug['entries']['start'] = self._io.pos()
+            self.entries = self._root.Block(self._io, self, self._root)
+            self.entries._read()
+            self._debug['entries']['end'] = self._io.pos()
+
+
+    class Block(KaitaiStruct):
+        SEQ_FIELDS = ["len_frame", "timestamp", "framedata"]
+        def __init__(self, _io, _parent=None, _root=None):
+            self._io = _io
+            self._parent = _parent
+            self._root = _root if _root else self
+            self._debug = collections.defaultdict(dict)
+
+        def _read(self):
+            self._debug['len_frame']['start'] = self._io.pos()
+            self.len_frame = self._io.read_u4le()
+            self._debug['len_frame']['end'] = self._io.pos()
+            self._debug['timestamp']['start'] = self._io.pos()
+            self.timestamp = self._io.read_u8le()
+            self._debug['timestamp']['end'] = self._io.pos()
+            self._debug['framedata']['start'] = self._io.pos()
+            self.framedata = self._io.read_bytes(self.len_frame)
+            self._debug['framedata']['end'] = self._io.pos()
+
+
+