sphinx_sfx.bt

//--------------------------------------
//--- 010 Editor v6.0.3 Binary Template
//
// File: Sphinx .sfx files
// Author: Swyter
// Revision: 2016-02-29, 2016-03-24
// Purpose: GameCube version (kind of supports PS2 too)
//--------------------------------------

// unlike other Eurocom formats for the
// GCM this one is big endian, wth??
//LittleEndian();

// further info: looks like the format was originally made for l-endian platforms like the PS2, later ported to b-endian platforms like the GCN resulting
// in some fields being flipped, others not, in the case of EDB files even its GEOM magic is reversed in GCN, look like is interpreted as a 32bit number/const.

// NOTE: fields prefixed by xx_ depend on platform endianess. GCN = big-e, PS2 = litle-e.


LittleEndian();

struct
{
    char le_magic[4];  // MUSX [4D 55 53 58]

    /* same as the filename: _bin_gc/music/hce0002a.sfx => E0002Ah
       (HC may stand for something like `hardcoded` or `HW converted`) */
    uint le_hash_ref <format=hex>;

    uint le_unk_const <format=hex>;   // 0xc9000000
    uint le_total_size <format=hex>;  // confirmed

    /* next fields are platform-dependent */
    if (ReadUInt() == 0x0800) LittleEndian(); else BigEndian();

    uint xx_properties_addr <format=hex>; // 0x0800
    uint xx_properties_size <format=hex>; // 0x0130
    uint xx_soundbank_addr <format=hex>;  // 0x1000

    /* size of the soundbank, basically total_size - 1000h bytes,
       as the start address of the soundback seems hardcoded at 0x1000 */
    uint xx_soundbank_size <format=hex>;

} head;


FSeek(head.xx_properties_addr);

/* always starts at 800h, seems to share format between platforms */
uint unk_coefs[head.xx_properties_size/sizeof(uint)] <format=hex>;


FSeek(head.xx_soundbank_addr);

/* always starts at 1000h */
ubyte soundbank[head.xx_soundbank_size] <format=hex>;


// adpcm coeffs? at 0x800
// data bank? starts always at 0x1000 for some reason


// these files look empty, interesting:
// /home/swyter/github/sphinxtools/x:/sphinx/binary/_bin_gc/music/hce00029.sfx
// /home/swyter/github/sphinxtools/x:/sphinx/binary/_bin_gc/music/hce0002a.sfx

// for comparison:
// /home/swyter/github/sphinxtools/x:/sphinx/binary/_bin_gc/music/hce00000.sfx
// /home/swyter/github/sphinxtools/x:/sphinx/binary/_bin_ps2/music/hce00000.sfx