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Write FNT table and subtables

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This commit is contained in:
Aetias
2023-10-14 10:14:50 +02:00
parent f4e93ffe61
commit 37b74d3eca
1 changed files with 46 additions and 10 deletions
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tools/rom/build.c
+46 -10
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@@ -14,6 +14,7 @@ uint8_t *readBuffer = NULL;
#define MAX_DIR_SIZE 256
#define INITIAL_SUBTABLE_SIZE 1024 * 1024
#define INITIAL_TABLE_SIZE 256
const uint8_t logo[] = {
0x24, 0xff, 0xae, 0x51, 0x69, 0x9a, 0xa2, 0x21, 0x3d, 0x84, 0x82, 0x0a, 0x84, 0xe4, 0x09, 0xad,
@@ -169,7 +170,10 @@ bool WriteArm9Overlays(FILE *fpRom, size_t *pAddress, size_t *pNumOverlays) {
}
typedef struct {
FntEntry *table;
uint16_t tableSize;
uint16_t tableMax;
uint16_t nextFileId;
uint16_t parentId;
@@ -178,6 +182,23 @@ typedef struct {
size_t subtableMax;
} FntContext;
bool GrowFntTable(FntContext *pContext, size_t minEntries) {
FntContext ctx;
memcpy(&ctx, pContext, sizeof(ctx));
if (minEntries <= ctx.tableMax) return true;
while (minEntries > ctx.tableMax) {
ctx.tableMax *= 2;
}
FntEntry *newTable = realloc(ctx.table, ctx.tableMax * sizeof(FntEntry));
if (newTable == NULL) FATAL("Failed to reallocate FNT table to %d entries\n", ctx.tableMax);
ctx.table = newTable;
memcpy(pContext, &ctx, sizeof(ctx));
return true;
}
bool GrowFntSubtable(FntContext *pContext, size_t growSize) {
FntContext ctx;
memcpy(&ctx, pContext, sizeof(ctx));
@@ -195,9 +216,7 @@ bool GrowFntSubtable(FntContext *pContext, size_t growSize) {
return true;
}
bool WriteFntSubtable(FILE *fpRom, size_t *pAddress, FntTree *tree, FntContext *pContext) {
size_t address = *pAddress;
bool WriteFntSubtable(FntTree *tree, FntContext *pContext) {
FntContext ctx;
memcpy(&ctx, pContext, sizeof(ctx));
size_t subtableStart = ctx.subtableSize;
@@ -232,10 +251,8 @@ bool WriteFntSubtable(FILE *fpRom, size_t *pAddress, FntTree *tree, FntContext *
mainEntry.subtableOffset = ctx.subtableSize; // will add main table length later
mainEntry.firstFile = ctx.nextFileId;
mainEntry.parentId = ctx.parentId;
if (fwrite(&mainEntry, sizeof(mainEntry), 1, fpRom) != 1) {
FATAL("Failed to write FNT entry for directory '%.*s'\n", entry->length, entry->name);
}
address += sizeof(mainEntry);
if (!GrowFntTable(&ctx, ctx.tableSize + 1)) return false;
memcpy(&ctx.table[ctx.tableSize], &mainEntry, sizeof(mainEntry));
ctx.nextFileId += numFiles;
uint16_t oldParentId = ctx.parentId;
@@ -243,7 +260,7 @@ bool WriteFntSubtable(FILE *fpRom, size_t *pAddress, FntTree *tree, FntContext *
char name[128];
strncpy(name, entry->name, entry->length);
if (!WriteFntSubtable(fpRom, &address, child, &ctx)) return false;
if (!WriteFntSubtable(child, &ctx)) return false;
ctx.parentId = oldParentId;
}
@@ -259,7 +276,6 @@ bool WriteFntSubtable(FILE *fpRom, size_t *pAddress, FntTree *tree, FntContext *
}
memcpy(pContext, &ctx, sizeof(ctx));
*pAddress = address;
return true;
}
@@ -267,15 +283,35 @@ bool WriteFnt(FILE *fpRom, size_t *pAddress, FntTree *pRoot, size_t firstFileId)
size_t address = *pAddress;
FntContext ctx;
ctx.table = malloc(INITIAL_TABLE_SIZE * sizeof(FntEntry));
if (ctx.table == NULL) FATAL("Failed to allocate FNT table\n");
ctx.tableSize = 0;
ctx.tableMax = INITIAL_TABLE_SIZE;
ctx.nextFileId = firstFileId;
ctx.parentId = 0xf000; // root directory
ctx.subtable = malloc(INITIAL_SUBTABLE_SIZE);
if (ctx.subtable == NULL) FATAL(stderr, "Failed to allocate FNT subtable\n");
if (ctx.subtable == NULL) FATAL("Failed to allocate FNT subtable\n");
ctx.subtableSize = 0;
ctx.subtableMax = INITIAL_SUBTABLE_SIZE;
FntEntry rootEntry;
rootEntry.subtableOffset = 0; // will add main table length later
rootEntry.firstFile = firstFileId;
rootEntry.parentId = 0; // will be set to number of directories later
size_t tableStart = address;
if (!WriteFntSubtable(fpRom, &address, pRoot, &ctx)) return false;
size_t tableLength = ctx.tableSize * sizeof(FntEntry);
for (size_t i = 0; i < ctx.tableSize; ++i) {
ctx.table[i].subtableOffset += tableLength;
}
if (fwrite(ctx.table, sizeof(FntEntry), ctx.tableSize, fpRom) != ctx.tableSize) FATAL("Failed to write FNT table\n");
if (fwrite(ctx.subtable, ctx.subtableSize, 1, fpRom) != 1) FATAL("Failed to write FNT subtables\n");
free(ctx.table);
free(ctx.subtable);
*pAddress = address;