/
roaster.go
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/
roaster.go
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/*
Copyright 2019 Google LLC
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
https://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package roaster
import (
"fmt"
"io/ioutil"
"os"
"strings"
)
func check(e error) {
if e != nil {
panic(e)
}
}
var BASE_SRC = "nbajamte/"
var BASE_DST = ""
type EPROM struct {
name string
data []byte
}
var EPROM_SIZE = 524288
type GFXROM_UNIT struct {
eproms [4]EPROM
mergedROM []byte
}
type GFXROM struct {
roms [4]GFXROM_UNIT
mergedROM []byte
}
var gfxrom GFXROM
type MAINROM struct {
rom [2]EPROM
mergedROM []byte
}
var mainRom MAINROM
func initialize() {
gfxrom.roms[0].eproms[0].name = "l1_nba_jam_tournament_game_rom_ug14.ug14"
gfxrom.roms[0].eproms[1].name = "l1_nba_jam_tournament_game_rom_uj14.uj14"
gfxrom.roms[0].eproms[2].name = "l1_nba_jam_tournament_game_rom_ug19.ug19"
gfxrom.roms[0].eproms[3].name = "l1_nba_jam_tournament_game_rom_uj19.uj19"
gfxrom.roms[1].eproms[0].name = "l1_nba_jam_tournament_game_rom_ug16.ug16"
gfxrom.roms[1].eproms[1].name = "l1_nba_jam_tournament_game_rom_uj16.uj16"
gfxrom.roms[1].eproms[2].name = "l1_nba_jam_tournament_game_rom_ug20.ug20"
gfxrom.roms[1].eproms[3].name = "l1_nba_jam_tournament_game_rom_uj20.uj20"
gfxrom.roms[2].eproms[0].name = "l1_nba_jam_tournament_game_rom_ug17.ug17"
gfxrom.roms[2].eproms[1].name = "l1_nba_jam_tournament_game_rom_uj17.uj17"
gfxrom.roms[2].eproms[2].name = "l1_nba_jam_tournament_game_rom_ug22.ug22"
gfxrom.roms[2].eproms[3].name = "l1_nba_jam_tournament_game_rom_uj22.uj22"
gfxrom.roms[3].eproms[0].name = "l1_nba_jam_tournament_game_rom_ug18.ug18"
gfxrom.roms[3].eproms[1].name = "l1_nba_jam_tournament_game_rom_uj18.uj18"
gfxrom.roms[3].eproms[2].name = "l1_nba_jam_tournament_game_rom_ug23.ug23"
gfxrom.roms[3].eproms[3].name = "l1_nba_jam_tournament_game_rom_uj23.uj23"
mainRom.rom[0].name = "l4_nba_jam_tournament_game_rom_uj12.uj12"
mainRom.rom[1].name = "l4_nba_jam_tournament_game_rom_ug12.ug12"
if len(os.Args) < 1 {
panic("Usage: go run src/main/main.go OUTPUT_DIRECTORY");
}
BASE_DST =os.Args[1]
if !strings.HasSuffix(BASE_DST, "/") {
BASE_DST += "/"
}
}
func deinterlaceGFXROM() {
fmt.Println("Deinterlacing gfxrom")
// Load all EPROMs
for i := 0; i < len(gfxrom.roms); i++ {
for j := 0; j < len(gfxrom.roms[i].eproms); j++ {
dat, err := ioutil.ReadFile(BASE_SRC + gfxrom.roms[i].eproms[j].name)
check(err)
gfxrom.roms[i].eproms[j].data = dat
}
}
// Allocate 8MiB
size := len(gfxrom.roms) * len(gfxrom.roms[0].eproms) * EPROM_SIZE
gfxrom.mergedROM = make([]byte, size)
for i := 0; i < len(gfxrom.roms); i++ {
deinterlaceROM_UNIT(&gfxrom.roms[i])
offset := EPROM_SIZE * 4 * i
copy(gfxrom.mergedROM[offset:], gfxrom.roms[i].mergedROM)
}
f, err := os.Create("gfxrom.bin")
check(err)
defer f.Close()
f.Write(gfxrom.mergedROM)
}
func deinterlaceROM_UNIT(rom *GFXROM_UNIT) {
rom.mergedROM = make([]byte, EPROM_SIZE*4)
var cursor = 0
for i := 0; i < EPROM_SIZE; i++ {
rom.mergedROM[cursor] = rom.eproms[0].data[i];
cursor += 1
rom.mergedROM[cursor] = rom.eproms[1].data[i];
cursor += 1
rom.mergedROM[cursor] = rom.eproms[2].data[i];
cursor += 1
rom.mergedROM[cursor] = rom.eproms[3].data[i];
cursor += 1
}
}
func deinterlaceMAINROM() {
fmt.Println("Deinterlacing mainrom")
for i := 0; i < len(mainRom.rom); i++ {
dat, err := ioutil.ReadFile(BASE_SRC + mainRom.rom[i].name)
check(err)
mainRom.rom[i].data = dat
if EPROM_SIZE != len(dat) {
return
}
}
f, err := os.Create("mainrom.bin")
check(err)
defer f.Close()
mainRom.mergedROM = make([]byte, EPROM_SIZE*2)
var cursor = 0
for i := 0; i < EPROM_SIZE; i++ {
mainRom.mergedROM[cursor] = mainRom.rom[0].data[i];
cursor += 1
mainRom.mergedROM[cursor] = mainRom.rom[1].data[i];
cursor += 1
}
f.Write(mainRom.mergedROM)
}
func interlaceMainROM() {
var cursor = 0
for ; cursor < EPROM_SIZE; cursor++ {
mainRom.rom[0].data[cursor] = mainRom.mergedROM[cursor*2 ]
mainRom.rom[1].data[cursor] = mainRom.mergedROM[cursor*2+1]
}
for i := 0; i < len(mainRom.rom); i++ {
f, err := os.Create(BASE_DST + mainRom.rom[i].name)
check(err)
defer f.Close()
_, err = f.Write(mainRom.rom[i].data)
}
}
func interlaceGFXROM_UNIT(rom *GFXROM_UNIT) {
for cursor := 0; cursor < EPROM_SIZE; cursor++ {
rom.eproms[0].data[cursor] = rom.mergedROM[cursor*4+0]
rom.eproms[1].data[cursor] = rom.mergedROM[cursor*4+1]
rom.eproms[2].data[cursor] = rom.mergedROM[cursor*4+2]
rom.eproms[3].data[cursor] = rom.mergedROM[cursor*4+3]
}
for i := 0; i < len(rom.eproms); i++ {
f, err := os.Create(BASE_DST + rom.eproms[i].name)
check(err)
defer f.Close()
f.Write(rom.eproms[i].data)
}
}
func interlaceGFXROMs() {
for i := 0; i < len(gfxrom.roms); i++ {
var start = EPROM_SIZE * 4 * i
gfxrom.roms[i].mergedROM = gfxrom.mergedROM[start : start+EPROM_SIZE*4]
interlaceGFXROM_UNIT(&gfxrom.roms[i])
}
}
func writeUint16(bytes []byte, offset int, value uint16) {
bytes[offset+0] = uint8((value & 0xFF00) >> 8)
bytes[offset+1] = uint8((value & 0x00FF) >> 0)
}
func writeBytes(dst []byte, offset int, bitOffset int, src []byte) {
//if bitOffset != 0 {
// for i := 0; i < len(src); i++ {
// dst[offset+i] = 16 //src[i]
// }
// return
//}
//// Working for non bitOffset = 0
//for i := 0; i < len(src); i++ {
// dst[offset + i] = src[i]
//}
var shift = uint(8 - bitOffset)
var mask = uint16(0xFF) << shift
for i := 0; i < len(src); i++ {
var p_src uint16
p_src = uint16(src[i])
p_src = p_src << shift
p_dst := uint16(uint16(dst[offset + i] + 0) << 8 ) | (uint16(dst[offset + i + 1]) )
p_dst = (p_dst & ^mask) | (p_src & mask)
dst[offset + i + 0] = uint8(p_dst >> 8)
dst[offset + i + 1] = uint8(p_dst)
}
}
func Roast() {
initialize()
deinterlaceGFXROM()
deinterlaceMAINROM()
Dispatch()
interlaceMainROM()
interlaceGFXROMs()
}