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Code cleanup: vgame.c/vgame.h

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d0k3 2016-11-29 15:54:25 +01:00
parent 72c5f21339
commit 4df338b8a0
1 changed files with 49 additions and 50 deletions
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99
source/virtual/vgame.c
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@ -61,9 +61,11 @@ static int n_templates_ncsd = -1;
static int n_templates_ncch = -1;
static int n_templates_exefs = -1;
static u32 offset_ncch = 0;
static u32 offset_exefs = 0;
static u32 offset_romfs = 0;
static u64 offset_cia = (u64) -1;
static u64 offset_ncsd = (u64) -1;
static u64 offset_ncch = (u64) -1;
static u64 offset_exefs = (u64) -1;
static u64 offset_romfs = (u64) -1;
static CiaStub* cia = (CiaStub*) (VGAME_BUFFER + 0xF4000); // 48kB reserved - should be enough by far
static NcsdHeader* ncsd = (NcsdHeader*) (VGAME_BUFFER + 0xF3000); // 512 byte reserved
@ -319,33 +321,16 @@ bool BuildVGameCiaDir(void) {
u32 InitVGameDrive(void) { // prerequisite: game file mounted as image
u32 type = GetMountState();
vgame_type = 0;
offset_ncch = 0;
offset_exefs = 0;
offset_romfs = 0;
if (type == GAME_CIA) { // for CIAs: load the CIA stub and keep it in memory
CiaInfo info;
if ((ReadImageBytes((u8*) cia, 0, 0x20) != 0) ||
(ValidateCiaHeader(&(cia->header)) != 0) ||
(GetCiaInfo(&info, &(cia->header)) != 0) ||
(ReadImageBytes((u8*) cia, 0, info.offset_content) != 0))
return 0;
if (!BuildVGameCiaDir()) return 0;
base_vdir = VDIR_CIA;
} else if (type == GAME_NCSD) {
if ((ReadImageBytes((u8*) ncsd, 0, sizeof(NcsdHeader)) != 0) ||
(ValidateNcsdHeader(ncsd) != 0))
return 0;
if (!BuildVGameNcsdDir()) return 0;
base_vdir = VDIR_NCSD;
} else if (type == GAME_NCCH) {
if ((ReadImageBytes((u8*) ncch, 0, sizeof(NcchHeader)) != 0) ||
(ValidateNcchHeader(ncch) != 0))
return 0;
if (!BuildVGameNcchDir()) return 0;
base_vdir = VDIR_NCCH;
offset_ncch = 0;
} else return 0; // not a mounted game file
offset_cia = (u64) -1;
offset_ncsd = (u64) -1;
offset_ncch = (u64) -1;
offset_exefs = (u64) -1;
offset_romfs = (u64) -1;
base_vdir = (type == GAME_CIA) ? VDIR_CIA : (type == GAME_NCSD) ? VDIR_NCSD : (type == GAME_NCCH) ? VDIR_NCCH : 0;
if (!base_vdir) return 0;
vgame_type = type;
return type;
@ -357,54 +342,68 @@ u32 CheckVGameDrive(void) {
}
bool OpenVGameDir(VirtualDir* vdir, VirtualFile* ventry) {
// build vdir object
vdir->index = -1;
vdir->virtual_src = VRT_GAME;
if (!ventry) { // root dir
vdir->offset = 0;
vdir->size = GetMountSize();
vdir->flags = VFLAG_DIR|base_vdir;
// base dir is already in memory -> done
} else { // non root dir
if (!(ventry->flags & VFLAG_DIR) || !(ventry->flags & VDIR_GAME))
return false;
vdir->offset = ventry->offset;
vdir->size = ventry->size;
vdir->flags = ventry->flags;
// build directories where required
u32 curr_vdir = vdir->flags & VDIR_GAME;
if ((curr_vdir == VDIR_NCCH) && (offset_ncch != vdir->offset)) {
if ((ReadImageBytes((u8*) ncch, vdir->offset, sizeof(NcchHeader)) != 0) ||
(ValidateNcchHeader(ncch) != 0))
return false;
offset_ncch = vdir->offset;
if (!BuildVGameNcchDir()) return false;
} else if ((curr_vdir == VDIR_EXEFS) && (offset_exefs != vdir->offset)) {
if ((ReadImageBytes((u8*) exefs, vdir->offset, sizeof(ExeFsHeader)) != 0) ||
(ValidateExeFsHeader(exefs, ncch->size_exefs * NCCH_MEDIA_UNIT) != 0))
return false;
offset_exefs = vdir->offset;
if (!BuildVGameExeFsDir()) return false;
}
}
// build directories where required
if ((vdir->flags & VDIR_CIA) && (offset_cia != vdir->offset)) {
CiaInfo info;
if ((ReadImageBytes((u8*) cia, 0, 0x20) != 0) ||
(ValidateCiaHeader(&(cia->header)) != 0) ||
(GetCiaInfo(&info, &(cia->header)) != 0) ||
(ReadImageBytes((u8*) cia, 0, info.offset_content) != 0))
return false;
offset_cia = vdir->offset; // always zero(!)
if (!BuildVGameCiaDir()) return false;
} else if ((vdir->flags & VDIR_NCSD) && (offset_ncsd != vdir->offset)) {
if ((ReadImageBytes((u8*) ncsd, 0, sizeof(NcsdHeader)) != 0) ||
(ValidateNcsdHeader(ncsd) != 0))
return 0;
offset_ncsd = vdir->offset; // always zero(!)
if (!BuildVGameNcsdDir()) return 0;
} else if ((vdir->flags & VDIR_NCCH) && (offset_ncch != vdir->offset)) {
if ((ReadImageBytes((u8*) ncch, vdir->offset, sizeof(NcchHeader)) != 0) ||
(ValidateNcchHeader(ncch) != 0))
return false;
offset_ncch = vdir->offset;
if (!BuildVGameNcchDir()) return false;
} else if ((vdir->flags & VDIR_EXEFS) && (offset_exefs != vdir->offset)) {
if ((ReadImageBytes((u8*) exefs, vdir->offset, sizeof(ExeFsHeader)) != 0) ||
(ValidateExeFsHeader(exefs, ncch->size_exefs * NCCH_MEDIA_UNIT) != 0))
return false;
offset_exefs = vdir->offset;
if (!BuildVGameExeFsDir()) return false;
}
return true; // error (should not happen)
}
bool ReadVGameDir(VirtualFile* vfile, VirtualDir* vdir) {
u32 curr_vdir = vdir->flags & VDIR_GAME;
VirtualFile* templates;
int n = 0;
if (curr_vdir == VDIR_CIA) {
if (vdir->flags & VDIR_CIA) {
templates = templates_cia;
n = n_templates_cia;
} else if (curr_vdir == VDIR_NCSD) {
} else if (vdir->flags & VDIR_NCSD) {
templates = templates_ncsd;
n = n_templates_ncsd;
} else if (curr_vdir == VDIR_NCCH) {
} else if (vdir->flags & VDIR_NCCH) {
templates = templates_ncch;
n = n_templates_ncch;
} else if (curr_vdir == VDIR_EXEFS) {
} else if (vdir->flags & VDIR_EXEFS) {
templates = templates_exefs;
n = n_templates_exefs;
}