MADS::Phantom::Channel Class Reference

#include <rsound.h>

Public Member Functions
void	reset (byte *startPtr)
void	enable (int flag)
void	load (byte *pData)

Public Attributes
RSound *	_owner = nullptr
int	_midiChannel = 0
int	_activeCount = 0
int	_pitchBendFadeStep = 0
int	_volumeFadeStep = 0
int	_panFadeStep = 0
int	_note = 0
int	_program = 0
int	_velocity = 0
int	_noteOffset = 0
int	_keyOnDelayOverride = 0
int	_keyOnDelay = 0
int	_volumeFadeCounter = 0
int	_volumeFadeReload = 0
int	_pitchBendFadeCounter = 0
int	_panFadeCounter = 0
int	_panFadeReload = 0
int	_pan = 0
int	_volume = 0
int	_pitchBend = 0
int	_pitchBendFadeReload = 0
int	_pitchBendFadeCount = 0
byte *	_loopStartPtr = nullptr
byte *	_pSrc = nullptr
byte *	_innerLoopPtr = nullptr
byte *	_outerLoopPtr = nullptr
int	_innerLoopCount = 0
int	_outerLoopCount = 0
byte *	_soundData = nullptr
byte *	_branchTarget = nullptr
int	_transpose = 0
int	_pendingStop = 0

Detailed Description

Represents the data for a channel on the Return of the Phantom MT-32 / MPU-401 driver. Ported from the Channel struct identified in rsound.ph1's disassembly (sizeof 0x27, five bytes larger than the equivalent Rex Nebular RSound Channel struct).

The word-sized fields at 0x14-0x20 (_loopStartPtr through _soundData) are at the IDENTICAL offsets/order/roles as Rex Nebular's Channel struct - that part of the layout is unchanged between games. The byte fields at 0x00-0x13 are the same overall SET as Rex Nebular (confirmed by matching each field against the exact MIDI status byte/controller number sent by its dedicated helper, e.g. sendProgramChange sends status 0xC0 using _program), just reordered, with _pendingStop moved down to the very last byte (0x26) to make room for a new field (_keyOnDelayOverride, 0x08) with no Rex Nebular equivalent. Two more new fields exist past the Rex Nebular struct's end: _branchTarget (0x22) and _transpose (0x25).

Member Function Documentation

reset()

void MADS::Phantom::Channel::reset

(

byte *

startPtr

)

Zeroes the entire 40-byte channel struct, then re-initialises the loop/source/sound-data pointers to startPtr and centers pan and pitch bend (0x40). More aggressive than Rex Nebular's equivalent, which leaves volume/program/velocity/key-on state untouched.

enable()

void MADS::Phantom::Channel::enable

(

int

flag

)

Marks the channel as pending-stop (fading toward silence) and invalidates _soundData so isSoundActive() no longer matches it.

load()

void MADS::Phantom::Channel::load

(

byte *

pData

)

Loads a brand new sound into the channel: resets it, marks it active, and resets pitch bend to center on the real device.

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The documentation for this class was generated from the following file:

• engines/mads/phantom/rsound.h