allow stream files with no config

api_test.py

-from bob.io.stream import Stream, StreamFile, StreamFilter, stream_filter, StreamServer, StreamRemote
+from bob.io.stream import Stream, StreamFile, StreamFilter, stream_filter #, StreamServer, StreamRemote
 import numpy as np
 import bob.io.base
 
@@ -18,7 +18,7 @@ assert(data_b.shape == data_shape)
 
 # create data file
 
-f = bob.io.base.HDF5File('data_file.h5', 'w')
+f = bob.io.base.HDF5File('api_test.h5', 'w')
 f.set('data_a', data_a)
 f.set('data_b', data_b)
 del f
@@ -26,42 +26,48 @@ del f
 # TODO timestamps
 # TODO config
 
-# load as stream 
+# minimal streams with no config
 
-f = StreamFile(	'data_file.h5', 'configjson'))
-
-color 		= Stream('color', f)
-nir_left 	= Stream('nir_left_stereo', f).adjust(color)
+f = StreamFile('api_test.h5')
 
+stream_a    = Stream('data_a', f)
+stream_b    = Stream('data_b', f)
 
+assert(stream_a.shape == data_a.shape)
+assert(stream_b.shape == data_b.shape)
+assert(stream_a.timestamps == None)
+assert(stream_b.timestamps == None)
+assert(stream_a.camera == None)
+assert(stream_b.camera == None)
 
+print(stream_a.image_points)
 
 ###########
 
-fo = StreamFile('test.h5', 'w')
+#fo = StreamFile('api_test.h5', 'w')
 
-so = Stream('out')
-co = so.clean()
-co.save(fo)
+#so = Stream('out')
+#co = so.clean()
+#co.save(fo)
 
-for i in range(10):
-    so[i] = data
+#for i in range(10):
+#    so[i] = data
 
     # or
-
-    so.append(data)
+#
+#    so.append(data)
 
 
 # or 
 
-fo = StreamFile('test.h5', 'w')
-so = Stream('out')
-co = so.clean()
+#fo = StreamFile('test.h5', 'w')
+#so = Stream('out')
+#co = so.clean()
 
-for i in range(10):
-    so[i] = data
+#for i in range(10):
+#    so[i] = data
 
-fo.save(co)
+#fo.save(co)
 
 
 

bob/io/stream/stream_file.py

@@ -46,7 +46,15 @@ class StreamFile:
         return list(self.data_format_config.keys())
 
     def get_stream_config(self, stream_name):
-        data_config = self.data_format_config[stream_name]
+        if self.data_format_config is not None:
+            data_config = self.data_format_config[stream_name]
+        else:
+            # return a generic config if no config is present
+            # TODO: make formal 
+            data_config = { 'array_format'  : None,
+                            'rotation'      : None,
+                            'camera'        : None,
+                            'path'          : stream_name}
         return data_config
 
     def get_stream_shape(self, stream_name):
@@ -78,6 +86,8 @@ class StreamFile:
         if "use_config_from" in data_config:
             data_config = self.get_stream_config(data_config["use_config_from"])
         camera_name = data_config["camera"]
+        if camera_name is None:
+            return None
         return self.camera_config[camera_name]
 
     def load_stream_data(self, stream_name, index):