encode command


Purpose

Perform ADPCM compression and conversion to SPU stream file format (*.ads) from uncompressed audio data.

Note: Only WAV files with straight PCM are supported. That is, the WAV file must have "fmt tag = 1".

Format

command section

encode (Abbreviated form: e)

options section

Options Meaning
-o Overwrite if output file already exists
-d [directory] Specify output directory.
-v Provide detailed progress report
-aiff Treat input file as a Macintosh AIFF file.
-wave Treat input file as a Windows WAVE file.
-raw Treat input file as Raw PCM file.
-a Perform ADPCM compression.
-8 Treat input sample as 8-bit PCM.
-16 Treat input sample as 16-bit PCM.
-le Treat input sample as little endian (Intel format).
-be Treat input sample as big endian (Motorola format).
-st Treat input sample as stereo.
-mn Treat input sample as monaural.
-sn Treat input sample as signed integers.
-us Treat input sample as unsigned integers.
-sr: sampling rate Specify the sampling rate for the sample.
-is: interleave size Specify the interleave size used for the output.
-sba: address Set loop_start_block_address for the SPU stream file header.
-eba: address Set loop_end_block_address for the SPU stream file header.

If an option for specifying the file format is omitted, auto-detection will determine if the file is an AIFF or WAVE file. An error will be generated if the file is neither.

If the input is a raw file, sampling format (e.g., sampling rate) should be set in the options. For AIFF or WAVE files, this will be reflected in the file header information.

Parameter values when options are omitted

Sampling bits 16 bit (raw format)
Sampling format Stereo, little endian, signed (raw format)
Sampling rate Settings required (raw format)
Interleave size 512 byte (PCM), 32 byte (ADPCM)
loop_start_block_address 0xffffffff (no loop)
loop_end_block_address 0xffffffff (no loop)

target file section

Parameter 1 Audio file serving as conversion source file
Parameter 2 (optional) Audio file (If omitted, the output file will be the conversion source filename with an ads extension.)

[EOF]

Last update:1999/09/27


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