GAPCM

$ ./gamdec --help
GAMdec u0r6 by Brendon 03/06/2024.
——Eternal Blue PCM decoder. https://ed7n.github.io/gapcm

Usage: -o <path> [<override>|<option>]... <file>
Where:
  -o, --output <path>     Path to output headerless, unsigned 8-bit PCM file.
                          `-` for pipe.
Header Overrides:
  -c, --channels {1|2}    1: mono, 2: stereo.
  -m, --mark <blocks>     Loop start position.
  -n, --length <frames>   Length between stream start and loop end. `-1` for
                          maximum.
  -p, --pregap <blocks>   Artificial silence length.

Options:
  -i, --info              Prints the header in a friendly format.
  -l, --loop <count>      Write the given count of loops. `0` to stop at the
                          mark; no loop. `-1` for 65535. Default is `2`.
  -t, --trail             Include samples after the loop end.

Echo, fade, and gain features are not supported; get their parameters with
the prober and apply them elsewhere. Also look there for details on units.

Program Arguments:
  -h, --help              Display this help message.
  --                      Stop parsing options.

Example

$ ./gamdec -i -l 1 -p 0 -o rp040.raw lunar2/rp040.pcm

$ ./gamenc --help
GAMenc u0r6 by Brendon 03/06/2024.
——Eternal Blue PCM encoder. https://ed7n.github.io/gapcm

Usage: -o <path> [<field>|<option>]... <file>
Where:
  -o,  --output <path>      Path to output game PCM file. `-` for pipe.

Header Fields:
  -c,  --channels {1|2}     1: mono (default), 2: stereo.
  -ea, --echo-pans <levels[6]>
                            Echo pans for channels 3 to 8. Low nibble: left,
                            high nibble: right.
  -ed, --echo-delay <ticks> Echo delay.
  -el, --echo-levels <levels[3]>
                            Echo levels for channel pairs 3 and 4 to 7 and 8.
  -ep, --echo-pregap <ticks>
                            First echo delay.
  -m,  --mark <blocks>      Loop start position. Default follows the length for
                            the shortest possible loop.
  -n,  --length <frames>    Length between stream start and loop end. `-1` for
                            maximum. Default is automatic.
  -p,  --pregap <blocks>    Artificial silence length. Default is `0`.

Options:
  -t, --trail               Include samples after the loop end.

The input file must be headerless, unsigned 8-bit PCM. Echo header fields
default to zero which disables the feature. See the prober for details on
units.

Program Arguments:
  -h, --help              Display this help message.
  --                      Stop parsing options.

Example

$ ./gamenc -m 11 -n 345122 -o rp040.pcm rp040.raw