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OBD:SNDD: Difference between revisions
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{{OBD_File_Header | type=SNDD | prev=QTNA | next=StNA | name=Sound Data | family=Generic | align=center}} | {{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. | |||
Below is the dat file part | |||
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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]] | [[image:sndd_wav.gif]] | ||
{{Table}} | {{Table}} | ||
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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| | | [[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}} | {{OBD_File_Footer | type=SNDD | prev=QTNA | next=StNA | name=Sound Data | family=Generic}} | ||