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Replace fmemopen when adding zst from rres 

Changelog:
- Modify zst load function to accept buffer containing the zst data.
    - Manually manage the buffer reading
- Reading from zst file will load entire zst in memory first before
  passing into load function.
scene_man
En Yi 2023-11-07 20:46:05 +08:00
parent 26cc567b7f
commit 716393e9f4
1 changed files with 33 additions and 8 deletions
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41
engine/assets.c
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@ -183,7 +183,7 @@ LevelPack_t* add_level_pack(Assets_t* assets, const char* name, const char* path
}
static LevelPack_t* add_level_pack_zst(Assets_t* assets, const char* name, FILE* file)
static LevelPack_t* add_level_pack_zst(Assets_t* assets, const char* name, const uint8_t* zst_buffer, uint32_t len)
{
LevelPackData_t* pack_info = levelpacks + n_loaded[4];
size_t read = 0;
@ -197,8 +197,14 @@ static LevelPack_t* add_level_pack_zst(Assets_t* assets, const char* name, FILE*
if (input.pos == input.size)
{
puts("Read more");
read = fread(level_decompressor.in_buffer, 1, DECOMPRESSOR_INBUF_LEN, file);
read = (len < DECOMPRESSOR_INBUF_LEN) ? len : DECOMPRESSOR_INBUF_LEN;
memcpy(level_decompressor.in_buffer, zst_buffer, read);
zst_buffer += read;
len -= read;
if (read == 0) break;
input.size = read;
input.pos = 0;
}
@ -234,7 +240,11 @@ static LevelPack_t* add_level_pack_zst(Assets_t* assets, const char* name, FILE*
{
if (input.pos == input.size)
{
read = fread(level_decompressor.in_buffer, 1, DECOMPRESSOR_INBUF_LEN, file);
read = (len < DECOMPRESSOR_INBUF_LEN) ? len : DECOMPRESSOR_INBUF_LEN;
memcpy(level_decompressor.in_buffer, zst_buffer, read);
zst_buffer += read;
len -= read;
if (read == 0) break;
input.size = read;
input.pos = 0;
@ -273,7 +283,11 @@ static LevelPack_t* add_level_pack_zst(Assets_t* assets, const char* name, FILE*
{
if (input.pos == input.size)
{
read = fread(level_decompressor.in_buffer, 1, DECOMPRESSOR_INBUF_LEN, file);
read = (len < DECOMPRESSOR_INBUF_LEN) ? len : DECOMPRESSOR_INBUF_LEN;
memcpy(level_decompressor.in_buffer, zst_buffer, read);
zst_buffer += read;
len -= read;
if (read == 0) break;
input.size = read;
input.pos = 0;
@ -322,9 +336,22 @@ LevelPack_t* uncompress_level_pack(Assets_t* assets, const char* name, const cha
FILE* file = fopen(path, "rb");
if (file == NULL) return NULL;
LevelPack_t* pack = add_level_pack_zst(assets, name, file);
fseek(file, 0L, SEEK_END);
uint32_t sz = ftell(file);
rewind(file);
uint8_t* zst_buffer = malloc(sz);
if (zst_buffer == NULL)
{
fclose(file);
return NULL;
}
fread(zst_buffer, 1, sz, file);
fclose(file);
LevelPack_t* pack = add_level_pack_zst(assets, name, zst_buffer, sz);
free(zst_buffer);
return pack;
}
@ -337,9 +364,7 @@ LevelPack_t* add_level_pack_rres(Assets_t* assets, const char* name, const char*
LevelPack_t* pack = NULL;
if (chunk.info.baseSize > 0 && strcmp(".lpk", (const char*)(chunk.data.props + 1)) == 0)
{
FILE* f_in = fmemopen(chunk.data.raw, chunk.info.baseSize, "rb");
pack = add_level_pack_zst(assets, name, f_in);
fclose(f_in);
pack = add_level_pack_zst(assets, name, chunk.data.raw, chunk.info.baseSize);
}
else
{