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Overlord: Jak2 stream loading (#2096)

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Untested lazy copy-paste job from jak1

Pretty confident it's the same logic with a new StrFileHeader struct.
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Ziemas 2023-01-05 00:29:50 +01:00 committed by GitHub
parent c24cdca380
commit dfcd203aad
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2 changed files with 81 additions and 19 deletions
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15
game/common/str_rpc_types.h
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@ -74,15 +74,24 @@ constexpr int STR_RPC_RESULT_DONE = 0;
constexpr int SECTOR_TABLE_SIZE = 64;
// the header of a chunked file
struct StrFileHeader {
struct StrFileHeaderJ1 {
u32 sectors[SECTOR_TABLE_SIZE]; // start of chunk, in sectors. including this sector.
u32 sizes[SECTOR_TABLE_SIZE]; // size of chunk, in bytes. always an integer number of sectors
};
// the first sector of a chunked file.
struct StrFileHeaderSector : StrFileHeader {
struct StrFileHeaderSector : StrFileHeaderJ1 {
u32 pad[512 - 128]; // all zero
};
static_assert(sizeof(StrFileHeader) == 0x200, "Sector header size");
static_assert(sizeof(StrFileHeaderJ1) == 0x200, "Sector header size");
static_assert(sizeof(StrFileHeaderSector) == SECTOR_SIZE, "Sector header size");
constexpr int SECTOR_TABLE_SIZE_J2 = 512;
struct StrFileHeaderJ2 {
u32 sectors[SECTOR_TABLE_SIZE_J2]; // start of chunk, in sectors. including this sector.
u32 sizes[SECTOR_TABLE_SIZE_J2]; // size of chunk, in bytes. always an integer number of sectors
};
static_assert(sizeof(StrFileHeaderJ2) == 0x1000, "Sector header size");

85
game/overlord/stream.cpp
View File

@ -36,18 +36,25 @@ static u32 global_vag_count = 0;
* We cache the chunk file headers so we can avoid seeking to the chunk header each time we
* need to load another chunk, even if we load chunks out of order.
*/
struct CacheEntry {
struct CacheEntryJ1 {
// the record for the chunk file described.
FileRecord* fr = nullptr;
// counts down from INT32_MAX - 1 each time we have a cache miss.
s32 countdown = 0;
// the actual cached data.
StrFileHeader header;
StrFileHeaderJ1 header;
};
struct CacheEntryJ2 {
FileRecord* fr = nullptr;
s32 countdown = 0;
StrFileHeaderJ2 header;
};
// the actual header cache.
constexpr int STR_INDEX_CACHE_SIZE = 4;
CacheEntry sCache[STR_INDEX_CACHE_SIZE];
CacheEntryJ1 sCacheJ1[STR_INDEX_CACHE_SIZE];
CacheEntryJ2 sCacheJ2[STR_INDEX_CACHE_SIZE];
void stream_init_globals() {
memset(&sSTRBufJak1, 0, sizeof(RPC_Str_Cmd_Jak1));
@ -135,11 +142,11 @@ void* RPC_STR_jak1(unsigned int fno, void* _cmd, int y) {
int cache_entry = 0;
int oldest = INT32_MAX;
int oldest_idx = -1;
while (cache_entry < STR_INDEX_CACHE_SIZE && sCache[cache_entry].fr != file_record) {
sCache[cache_entry].countdown--;
if (sCache[cache_entry].countdown < oldest) {
while (cache_entry < STR_INDEX_CACHE_SIZE && sCacheJ1[cache_entry].fr != file_record) {
sCacheJ1[cache_entry].countdown--;
if (sCacheJ1[cache_entry].countdown < oldest) {
oldest_idx = cache_entry;
oldest = sCache[cache_entry].countdown;
oldest = sCacheJ1[cache_entry].countdown;
}
cache_entry++;
}
@ -147,9 +154,9 @@ void* RPC_STR_jak1(unsigned int fno, void* _cmd, int y) {
if (cache_entry == STR_INDEX_CACHE_SIZE) {
// cache miss, we need to load the header to the header cache on the IOP
cache_entry = oldest_idx;
sCache[oldest_idx].fr = file_record;
sCache[oldest_idx].countdown = INT32_MAX - 1;
if (!LoadISOFileToIOP(file_record, &sCache[oldest_idx].header, sizeof(StrFileHeader))) {
sCacheJ1[oldest_idx].fr = file_record;
sCacheJ1[oldest_idx].countdown = INT32_MAX - 1;
if (!LoadISOFileToIOP(file_record, &sCacheJ1[oldest_idx].header, sizeof(StrFileHeaderJ1))) {
printf("[OVERLORD STR] Failed to load chunk file header for animation %s\n", cmd->name);
cmd->result = 1;
return cmd;
@ -158,14 +165,14 @@ void* RPC_STR_jak1(unsigned int fno, void* _cmd, int y) {
// load data, using the cached header to find the location of the chunk.
if (!LoadISOFileChunkToEE(file_record, cmd->ee_addr,
sCache[cache_entry].header.sizes[cmd->chunk_id],
sCache[cache_entry].header.sectors[cmd->chunk_id])) {
sCacheJ1[cache_entry].header.sizes[cmd->chunk_id],
sCacheJ1[cache_entry].header.sectors[cmd->chunk_id])) {
printf("[OVERLORD STR] Failed to load chunk %d for animation %s\n", cmd->chunk_id,
cmd->name);
cmd->result = 1;
} else {
// successful load!
cmd->length = sCache[cache_entry].header.sizes[cmd->chunk_id];
cmd->length = sCacheJ1[cache_entry].header.sizes[cmd->chunk_id];
cmd->result = 0;
}
}
@ -202,9 +209,55 @@ void* RPC_STR_jak2(unsigned int fno, void* _cmd, int y) {
}
}
} else {
// TODO - not yet implemented
ASSERT_MSG(false, "this branch of RPC_STR has not yet been implemented!");
cmd->result = STR_RPC_RESULT_ERROR;
// it's a chunked file. These are only animations - these have a separate naming scheme.
char animation_iso_name[128];
ISONameFromAnimationName(animation_iso_name, cmd->basename);
auto file_record = isofs->find_in(animation_iso_name);
if (!file_record) {
// didn't find the file
printf("[OVERLORD STR] Failed to find animation %s\n", cmd->basename);
cmd->result = STR_RPC_RESULT_ERROR;
} else {
// found it! See if we've cached this animation's header.
int cache_entry = 0;
int oldest = INT32_MAX;
int oldest_idx = -1;
while (cache_entry < STR_INDEX_CACHE_SIZE && sCacheJ2[cache_entry].fr != file_record) {
sCacheJ2[cache_entry].countdown--;
if (sCacheJ2[cache_entry].countdown < oldest) {
oldest_idx = cache_entry;
oldest = sCacheJ2[cache_entry].countdown;
}
cache_entry++;
}
if (cache_entry == STR_INDEX_CACHE_SIZE) {
// cache miss, we need to load the header to the header cache on the IOP
cache_entry = oldest_idx;
sCacheJ2[oldest_idx].fr = file_record;
sCacheJ2[oldest_idx].countdown = INT32_MAX - 1;
if (!LoadISOFileToIOP(file_record, &sCacheJ2[oldest_idx].header, sizeof(StrFileHeaderJ2))) {
printf("[OVERLORD STR] Failed to load chunk file header for animation %s\n",
cmd->basename);
cmd->result = 1;
return cmd;
}
}
// load data, using the cached header to find the location of the chunk.
if (!LoadISOFileChunkToEE(file_record, cmd->address,
sCacheJ2[cache_entry].header.sizes[cmd->section],
sCacheJ2[cache_entry].header.sectors[cmd->section])) {
printf("[OVERLORD STR] Failed to load chunk %d for animation %s\n", cmd->section,
cmd->basename);
cmd->result = 1;
} else {
// successful load!
cmd->maxlen = sCacheJ2[cache_entry].header.sizes[cmd->section];
cmd->result = 0;
}
}
}
return cmd;