verified mark table

Author: ladyada

Teddy_Ruxpin/ruxalyzer.py

@@ -32,30 +32,12 @@
 assetTablePointers = [0] * SNXROM['assetTableLengthWords']
 for i in range(SNXROM['assetTableLengthWords']):
     assetTablePointers[i] = struct.unpack('I', storyfile.read(4))[0]
-print("Asset table pointers:", [hex(i) for i in assetTablePointers])
+#print("Asset table pointers:", [hex(i) for i in assetTablePointers])
 
-SNXROM['audioOffset'] = assetTablePointers[-1]
-
-# verify audio offset
-print("Looking for audio at", hex(SNXROM['audioOffset']))
-storyfile.seek(SNXROM['audioOffset'])
-if "AU" != storyfile.read(2).decode('utf-8'):
-    raise RuntimeError("Didn't find AU at beginning of audio")
-print("Found beginning of audio")
-"""
-SNXROM['metaOffset'] = struct.unpack('I', storyfile.read(4))[0]
-SNXROM['leftEyeOffset'] = struct.unpack('I', storyfile.read(4))[0]
-SNXROM['rightEyeOffset'] = struct.unpack('I', storyfile.read(4))[0]
 
 
-print("Metadata offset: %d bytes, address 0x%0X" % (SNXROM['metaOffset'], SNXROM['metaOffset']))
-print("Left Eye offset: %d bytes, address 0x%0X" % (SNXROM['leftEyeOffset'], SNXROM['leftEyeOffset']))
-print("Right Eye offset: %d bytes, address 0x%0X" % (SNXROM['rightEyeOffset'], SNXROM['rightEyeOffset']))
-print("Audio data offset: %d bytes, address 0x%0X" % (SNXROM['audioOffset'], SNXROM['audioOffset']))
-
-print(storyfile.tell())
-
 # Go to the metadata table
+SNXROM['metaOffset'] = assetTablePointers[0]
 storyfile.seek(SNXROM['metaOffset'])
 
 if 0x0000 != struct.unpack('h', storyfile.read(2))[0]:
@@ -73,4 +55,70 @@
 
 SNXROM['ROMfilesize'] = struct.unpack('i', storyfile.read(4))[0]
 print(SNXROM['ROMfilesize'])
+
+##############
+
+SNXROM['audioOffset'] = assetTablePointers[-1]
+
+# verify audio offset
+print("Looking for audio at", hex(SNXROM['audioOffset']))
+storyfile.seek(SNXROM['audioOffset'])
+
+if "AU" != storyfile.read(2).decode('utf-8'):
+    raise RuntimeError("Didn't find AU at beginning of audio")
+print("Found beginning of audio")
+(samplerate, bitrate, channels, frame_count, file_len, mark_flag, silence_flag, \
+ mbf, pcs, rec, header_len) = \
+ struct.unpack('<HHHIIHHHHHH', storyfile.read(26))
+
+print("Header Size (16b words):", hex(header_len))
+
+print("Samplerate:", samplerate)
+print("Bitrate:", bitrate)
+print("Channels:", channels)
+print("Frame count:", frame_count)
+print("File len (16b words):", file_len)
+if (file_len * 2) / 80 != frame_count:
+    print("Should be %d frames * 80 bytes per frame = %d total size" % (frame_count, file_len*2))
+print("Mark flag:", mark_flag)
+print("Silence flag:", silence_flag)
+print("Header Size (16b words):", header_len)
+
+#print(storyfile.tell() - SNXROM['audioOffset'])
+
+# toss 0xFFFFFFFF
+storyfile.read(4)
+
+table_size = struct.unpack('<H', storyfile.read(2))[0]
+#print(table_size * 2)
+mark_entries = header_len*2 - (storyfile.tell() - SNXROM['audioOffset']) - 4
+print("entries:", mark_entries)
+
+marktable = []
+for i in range(mark_entries // 2):
+    marktable.append(struct.unpack('<H', storyfile.read(2))[0])
+totaltime = 0;
+for i in range(len(marktable) // 2):
+    totaltime+=marktable[2*i+0]
+    print(marktable[2*i+0], marktable[2*i+1])
+print("total length of motion mark table (s):", totaltime / 1000.0)
+
+print("Actual audio data starts at", hex(SNXROM['audioOffset'] + header_len*2))
+print("and ends at ", hex(SNXROM['audioOffset'] + header_len*2 + file_len*2))
+"""
+
+
+
+SNXROM['leftEyeOffset'] = struct.unpack('I', storyfile.read(4))[0]
+SNXROM['rightEyeOffset'] = struct.unpack('I', storyfile.read(4))[0]
+
+
+print("Metadata offset: %d bytes, address 0x%0X" % (SNXROM['metaOffset'], SNXROM['metaOffset']))
+
+print("Left Eye offset: %d bytes, address 0x%0X" % (SNXROM['leftEyeOffset'], SNXROM['leftEyeOffset']))
+print("Right Eye offset: %d bytes, address 0x%0X" % (SNXROM['rightEyeOffset'], SNXROM['rightEyeOffset']))
+print("Audio data offset: %d bytes, address 0x%0X" % (SNXROM['audioOffset'], SNXROM['audioOffset']))
+
+print(storyfile.tell())
+
 """