Put brackets around prints. Start of python 3 support

spatialmedia/gui.py

@@ -117,7 +117,7 @@ def action_open(self):
 
         if audio_metadata:
             self.var_spatial_audio.set(1)
-            print audio_metadata.get_metadata_string()
+            print (audio_metadata.get_metadata_string())
 
         self.update_state()
 

spatialmedia/metadata_utils.py

@@ -377,7 +377,7 @@ def get_expected_num_audio_components(ambisonics_type, ambisonics_order):
 
 def get_num_audio_channels(stsd, in_fh):
     if stsd.name != mpeg.constants.TAG_STSD:
-        print "get_num_audio_channels should be given a STSD box"
+        print ("get_num_audio_channels should be given a STSD box")
         return -1
     for sample_description in stsd.contents:
         if sample_description.name == mpeg.constants.TAG_MP4A:
@@ -415,7 +415,7 @@ def get_sample_description_num_channels(sample_description, in_fh):
         audio_sample_rate = struct.unpack(">d", in_fh.read(8))[0]
         num_audio_channels = struct.unpack(">i", in_fh.read(4))[0]
     else:
-        print "Unsupported version for " + sample_description.name + " box"
+        print ("Unsupported version for " + sample_description.name + " box")
         return -1
 
     in_fh.seek(p)
@@ -443,23 +443,23 @@ def get_aac_num_channels(box, in_fh):
 
         # Verify the read descriptor is an elementary stream descriptor
         if ord(descriptor_tag) != 3:  # Not an MP4 elementary stream.
-            print "Error: failed to read elementary stream descriptor."
+            print ("Error: failed to read elementary stream descriptor.")
             return -1
         get_descriptor_length(in_fh)
         in_fh.seek(3, 1)  # Seek to the decoder configuration descriptor
         config_descriptor_tag = struct.unpack(">c", in_fh.read(1))[0]
 
         # Verify the read descriptor is a decoder config. descriptor.
         if ord(config_descriptor_tag) != 4:
-            print "Error: failed to read decoder config. descriptor."
+            print ("Error: failed to read decoder config. descriptor.")
             return -1
         get_descriptor_length(in_fh)
         in_fh.seek(13, 1) # offset to the decoder specific config descriptor.
         decoder_specific_descriptor_tag = struct.unpack(">c", in_fh.read(1))[0]
 
         # Verify the read descriptor is a decoder specific info descriptor
         if ord(decoder_specific_descriptor_tag) != 5:
-            print "Error: failed to read MP4 audio decoder specific config."
+            print ("Error: failed to read MP4 audio decoder specific config.")
             return -1
         audio_specific_descriptor_size = get_descriptor_length(in_fh)
         assert audio_specific_descriptor_size >= 2
@@ -469,7 +469,7 @@ def get_aac_num_channels(box, in_fh):
         if sampling_frequency_index == 0:
             # TODO: If the sample rate is 96kHz an additional 24 bit offset
             # value here specifies the actual sample rate.
-            print "Error: Greater than 48khz audio is currently not supported."
+            print ("Error: Greater than 48khz audio is currently not supported.");
             return -1
         channel_configuration = (int("0078", 16) & decoder_descriptor) >> 3
     in_fh.seek(p)

spatialmedia/mpeg/box.py

@@ -48,7 +48,7 @@ def load(fh, position, end):
         header_size = 16
 
     if size < 8:
-        print "Error, invalid size", size, "in", name, "at", position
+        print ("Error, invalid size", size, "in", name, "at", position)
         return None
 
     if (position + size) > end:
@@ -123,7 +123,7 @@ def print_structure(self, indent=""):
         """Prints the box structure."""
         size1 = self.header_size
         size2 = self.content_size
-        print "{0} {1} [{2}, {3}]".format(indent, self.name, size1, size2)
+        print ("{0} {1} [{2}, {3}]".format(indent, self.name, size1, size2))
 
 
 def tag_copy(in_fh, out_fh, size):

spatialmedia/mpeg/container.py

@@ -60,11 +60,11 @@ def load(fh, position, end):
         header_size = 16
 
     if size < 8:
-        print "Error, invalid size", size, "in", name, "at", position
+        print ("Error, invalid size", size, "in", name, "at", position)
         return None
 
     if (position + size) > end:
-        print "Error: Container box size exceeds bounds."
+        print ("Error: Container box size exceeds bounds.")
         return None
 
     padding = 0
@@ -148,7 +148,7 @@ def print_structure(self, indent=""):
         """Prints the box structure and recurses on contents."""
         size1 = self.header_size
         size2 = self.content_size
-        print "{0} {1} [{2}, {3}]".format(indent, self.name, size1, size2)
+        print ("{0} {1} [{2}, {3}]".format(indent, self.name, size1, size2))
 
         size = len(self.contents)
         for i in range(size):
@@ -188,7 +188,7 @@ def add(self, element):
             if content.name == element.name:
                 if isinstance(content, container_leaf):
                     return content.merge(element)
-                print "Error, cannot merge leafs."
+                print ("Error, cannot merge leafs.")
                 return False
 
         self.contents.append(element)

spatialmedia/mpeg/mpeg4_container.py

@@ -42,7 +42,7 @@ def load(fh):
     contents = container.load_multiple(fh, 0, size)
 
     if not contents:
-        print "Error, failed to load .mp4 file."
+        print ("Error, failed to load .mp4 file.")
         return None
     elif len(contents) == 0:
         print ("Error, no boxes found.")
@@ -98,12 +98,12 @@ def __init__(self):
 
     def merge(self, element):
         """Mpeg4 containers do not support merging."""
-        print "Cannot merge mpeg4 files"
+        print ("Cannot merge mpeg4 files")
         exit(0)
 
     def print_structure(self):
         """Print mpeg4 file structure recursively."""
-        print "mpeg4 [", self.content_size, "]"
+        print ("mpeg4 [", self.content_size, "]")
 
         size = len(self.contents)
         for i in range(size):

spatialmedia/mpeg/sa3d.py

@@ -47,11 +47,11 @@ def load(fh, position=None, end=None):
     name = fh.read(4)
 
     if (name != constants.TAG_SA3D):
-        print "Error: box is not an SA3D box."
+        print ("Error: box is not an SA3D box.")
         return None
 
     if (position + size > end):
-        print "Error: SA3D box size exceeds bounds."
+        print ("Error: SA3D box size exceeds bounds.")
         return None
 
     new_box.content_size = size - new_box.header_size