Kostya: fill information from ScummVM code

2021-07-20T10:49:11Z

fill information from ScummVM code

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This is a format employing [[FLIC]] compression in a custom container supporting engine commands. It is used in <i>Chewy: Esc from F5</i> game.

=== Container header ===

4 bytes - CFO\0
4 bytes - zero
2 bytes - number of frames
2 bytes - width
2 bytes - height

4 bytes - frame delay
4 bytes - frame data start

=== Frame types ===

4 bytes - frame size
2 bytes - frame type

Known frame types:
* 0xF1FA - FLIC-compressed video frame
* 0xFAF1 - custom commands

=== Custom commands frame format ===

Frame data consists of 2-byte number of commands and actual commands that start with 4-byte size and 2-byte type.

Known commands:
* 0x00 - fade in (unused)
* 0x01 - fade out (unused), has 2-byte delay value
* 0x02 - load music
* 0x03 - load raw audio
* 0x04 - load sound effect, has 2-byte effect ID and actual audio data
* 0x05 - play music (from command data)
* 0x06 - play sequence (unused)
* 0x07 - play pattern (unused)
* 0x08 - stop music
* 0x09 - wait until music ends
* 0x0A - set music volume, has 2-byte volume in percent in command data
* 0x0B - set loop mode
* 0x0C - play raw audio
* 0x0D - play sound effect using provided ID, channel, volume and repeat flag (all in 2-byte variables)
* 0x0E - set sound volume, has 2-byte volume in percent in command data
* 0x0F - set channel volume, has 2-byte channel number and 2-byte channel volume
* 0x10 - free sound effect, has 2-byte sound effect ID
* 0x11 - music fade in (unused)
* 0x12 - music fade out
* 0x13 - set balance, has 2-byte channel ID and balance value
* 0x14 - set speed (unused)
* 0x15 - clear screen

Music is its own MOD-like TFM format.

[[Category: Game Formats]]

CFO - Revision history

Kostya: fill information from ScummVM code