OBD:SNDD: Difference between revisions

Revision as of 20:12, 16 November 2007

SNDD : Sound Data

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Overview @ Oni Stuff

There are 2 different formats used by the SNDD files. Below is the dat file part used in the PC retail version.

Offset	Type	Raw Hex	Value	Description
0x00	res_id	01 D7 08 00	2263	02263-comguy_dth2.aif.SNDD
0x04	lev_id	01 00 00 06	3	level 3
0x08	block[54]			wav header
0x3E	int16	37 00	55	duration in 1/60 seconds
0x40	int32	56 28 00 00	10326	size of the part in the raw file in bytes
0x44	offset	20 10 59 00	00 59 10 20	at this position starts the part in the raw file
0x48	char[24]	AD DE	dead	unused

The Mac version and the PC demo version use a simpler format and it appears that there is no support for different sample rates (all sounds are sampled at 22050 Hz).

Offset	Type	Raw Hex	Value	Description
0x00	res_id	01 D6 08 00	2262	02262-comguy_dth2.aif.SNDD
0x04	lev_id	01 00 00 06	3	level 3
0x08	int32	01 00 00 00	1	"number of channels" (can be 1 for 1 channel or 3 for 2 channels)
0x0C	int32	37 00 00 00	55	duration in 1/60 seconds
0x10	int32	5E 2A 00 00	10846	size of the part in the raw file in bytes
0x14	offset	00 B1 01 00	00 01 B1 00	at this position starts the part in the raw file
0x18	char[8]	AD DE	dead	unused

The raw data part of a SNDD file contains the actual audio samples without any other headers. To create a wav/aif file one needs to write a file header like below and then write the contents of the raw data part.

WAV files

Write "RIFF", add the size of the part in the raw file + 70 byte, write "WAVE", write "fmt ", add the wav header + change it's first byte from 8 to 32, write "data", add the size of the part in the raw file, add the raw file data and save it as a wav file.

Offset	Type	Raw Hex	Value	Description
Complete ADPCM wav format header (black outline)
0x00	char[4]	52 49 46 46	RIFF	identification that this file uses the IBM/Microsoft RIFF standard
0x04	int32	9C 28 00 00	10396	size of the wav file from the the green coloured field to the end in bytes (= size of the part in the raw file + 70 bytes)
0x08	char[4]	57 41 56 45	WAVE	identification that this file is a WAVE file
0x0C	char[4]	66 6D 74 20	fmt	identification that the wav format header follows
0x10	block[54]			wav header; note that it starts with a 32 and not with an 8
0x46	char[4]	64 61 74 61	data	identification that the wav data follows
0x4A	int32	56 28 00 00	10326	size of the following wav data in bytes (= size of the part in the raw file)

AIF files

Write "FORM", add the size of the part in the raw file + 50 bytes, write "AIFC", write "COMM ", add the aif header + calculate its sample rate, write "SSND", add the size of the part in the raw file + 8 bytes, add 8 zero bytes, add the raw file data and save it as an aif file.

Offset	Type	Raw Hex	Value	Description
Complete aif format header (black outline) - Note: You have to read the Raw Hex content from left to right
0x00	char[4]	46 4F 52 4D	FORM	identification, that this file uses the "EA IFF 85" standard
0x04	int32	00 00 2A 90	10896	size of the file from the the green coloured field to the end in bytes (= size of the part in the raw file + 50 bytes)
0x08	char[4]	41 49 46 43	AIFC	identification, that this file is a AIFC file (compressed aif file)
0x0C	char[4]	43 4F 4D 4D	COMM	identification that the aif format header follows
0x10	block[26]			aif header
0x2A	char[4]	53 53 4E 44	SSND	identification that the aif data follows
0x2E	int32	00 00 2A 66	10854	size of the file from the the light blue coloured field to the end (= size of the part in the raw file + 8 bytes)
0x32	int32	00 00 00 00	0	offset; determines where the first sample in the data starts; in Oni it's always zero
0x36	int32	00 00 00 00	0	block size; used in conjunction with offset for block-aligning data; in Oni it's always zero


ONI BINARY DATA

QTNA << Other file types >> StNA
SNDD : Sound Data
Generic file

@@ Line 1: / Line 1: @@
 {{OBD_File_Header | type=SNDD | prev=QTNA | next=StNA | name=Sound Data | family=Generic | align=center}}
+There are 2 different formats used by the SNDD files. Below is the dat file part used in the PC retail version.
-----
-<center>'''PC Sound Data'''&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[[OBD:SNDD_Mac|Mac Sound Data]]</center>
-----
-Below is the dat file part of the SNDD file.
@@ Line 25: / Line 19: @@
-So, how to create playable wav files? Look at the pic below. It shows the beginning of the comguy_dth2.wav sound.
+The Mac version and the PC demo version use a simpler format and it appears that there is no support for different sample rates (all sounds are sampled at 22050 Hz).
+[[image:sndd_alm.gif]]
+{{Table}}
+{{OBDth}}
+{{OBDtr| 0x00 | res_id   |FF0000| 01 D6 08 00 | 2262      | 02262-comguy_dth2.aif.SNDD }}
+{{OBDtr| 0x04 | lev_id   |FFFF00| 01 00 00 06 | 3         | level 3 }}
+{{OBDtr| 0x08 | int32    |FFC8C8| 01 00 00 00 | 1         | "number of channels" (can be 1 for 1 channel or 3 for 2 channels) }}
+{{OBDtr| 0x0C | int32    |FFFFC8| 37 00 00 00 | 55        | duration in 1/60 seconds }}
+{{OBDtr| 0x10 | int32    |C8FFC8| 5E 2A 00 00 | 10846     | size of the part in the raw file in bytes }}
+{{OBDtr| 0x14 | offset   |C8FFFF| 00 B1 01 00 |00 01 B1 00| at this position starts the part in the raw file }}
+{{OBDtr| 0x18 | char[8]  |FFC8FF| AD DE       | dead      | unused }}
+|}
+The raw data part of a SNDD file contains the actual audio samples without any other headers. To create a wav/aif file one needs to write a file header like below and then write the contents of the raw data part.
+WAV files
+Write "RIFF", add the size of the part in the raw file + 70 byte, write "WAVE", write "fmt ", add the wav header + change it's first byte from 8 to 32, write "data", add the size of the part in the raw file, add the raw file data and save it as a wav file.
 [[image:sndd_wav.gif]]
 {{Table}}
@@ Line 44: / Line 61: @@
-Just write "RIFF", add the size of the part in the raw file + 70 byte, write "WAVE", write "fmt ", add the wav header + change it's first byte from 8 to 32, write "data", add the size of the part in the raw file, add the raw file data and save it as a wav file.
+AIF files
+Write "FORM", add the size of the part in the raw file + 50 bytes, write "AIFC", write "COMM ", add the aif header + calculate its sample rate, write "SSND", add the size of the part in the raw file + 8 bytes, add 8 zero bytes, add the raw file data and save it as an aif file.
+[[image:sndm_aif.gif]]
+{{Table}}
+{{OBDth}}
+{{OBDtrBK|1=Complete aif format header (black outline) - Note: You have to read the Raw Hex content from left to right}}
+{{OBDtr| 0x00 | char[4]  |FF0000| 46 4F 52 4D | FORM      | identification, that this file uses the "EA IFF 85" standard }}
+{{OBDtr| 0x04 | int32    |FFFF00| 00 00 2A 90 | 10896     | size of the file from the the green coloured field to the end in bytes (<nowiki>=</nowiki> size of the part in the raw file + 50 bytes) }}
+{{OBDtr| 0x08 | char[4]  |00FF00| 41 49 46 43 | AIFC      | identification, that this file is a AIFC file (compressed aif file) }}
+{{OBDtr| 0x0C | char[4]  |00FFFF| 43 4F 4D 4D | COMM      | identification that the aif format header follows }}
+{{OBDtr| 0x10 | block[26]|FFC8C8| &nbsp;      | &nbsp;    | [[OBD:SNDD/aif|aif header]] }}
+{{OBDtr| 0x2A | char[4]  |FFFFC8| 53 53 4E 44 | SSND      | identification that the aif data follows }}
+{{OBDtr| 0x2E | int32    |C8FFC8| 00 00 2A 66 | 10854     | size of the file from the the light blue coloured field to the end (<nowiki>=</nowiki> size of the part in the raw file + 8 bytes) }}
+{{OBDtr| 0x32 | int32    |C8FFFF| 00 00 00 00 | 0         | offset; determines where the first sample in the data starts; in Oni it's always zero }}
+{{OBDtr| 0x36 | int32    |FFC8FF| 00 00 00 00 | 0         | block size; used in conjunction with offset for block-aligning data; in Oni it's always zero }}
+|}
 {{OBD_File_Footer | type=SNDD | prev=QTNA | next=StNA | name=Sound Data | family=Generic}}