Disable PSTITLEIMG for single disc game PSP conversions

Some single disc games only works on old versions on POPS for PSP and those old versions on POPS do not support the PSTITLEIMG section. So, when generating a EBOOT for PSP and if it is a single disc then generate it witout a PSTITLEIMG and only a single PSISOIMG section so that it is compatible with old POPS versions. Mortal Kombat Trilogy is one such example which only works on POPS v 3.02. Signed-off-by: Ronnie Sahlberg <[email protected]>
sahlberg · Aug 7, 2024 · 3477db0 · 3477db0
1 parent a90495d
commit 3477db0
Show file tree

Hide file tree

Showing 2 changed files with 51 additions and 25 deletions.
diff --git a/pop-fe.py b/pop-fe.py
@@ -2722,7 +2722,7 @@ def bcd(i):
         return toc
 
 
-def generate_pbp(dest_file, disc_ids, game_title, icon0, pic0, pic1, cue_files, cu2_files, img_files, aea_files, magic_word, snd0=None, whole_disk=True, subchannels=[], configs=None, logo=None):
+def generate_pbp(dest_file, disc_ids, game_title, icon0, pic0, pic1, cue_files, cu2_files, img_files, aea_files, magic_word, snd0=None, whole_disk=True, subchannels=[], configs=None, logo=None, no_pstitleimg=False):
     print('Create PBP file for', game_title) if verbose else None
 
     SECTLEN = 2352
@@ -2731,6 +2731,8 @@ def generate_pbp(dest_file, disc_ids, game_title, icon0, pic0, pic1, cue_files,
     p.disc_ids = disc_ids
     p.game_title = game_title
     p.subchannels = subchannels
+    if no_pstitleimg:
+        p.no_pstitleimg = no_pstitleimg
     if magic_word:
         p.magic_word = magic_word
     if configs:
@@ -2867,7 +2869,8 @@ def create_psp(dest, disc_ids, game_title, icon0, pic0, pic1, cue_files, cu2_fil
     for i in range(len(magic_word)):
         magic_word[i] = magic_word[i] & 0x72D0EE59
 
-    generate_pbp(dest_file, disc_ids, game_title, icon0, pic0, pic1, cue_files, cu2_files, img_files, aea_files, magic_word, snd0=snd0_data, whole_disk=whole_disk, subchannels=subchannels, configs=configs, logo=logo)
+    no_pstitleimg = True if len(disc_ids) == 1 else False
+    generate_pbp(dest_file, disc_ids, game_title, icon0, pic0, pic1, cue_files, cu2_files, img_files, aea_files, magic_word, snd0=snd0_data, whole_disk=whole_disk, subchannels=subchannels, configs=configs, logo=logo, no_pstitleimg=no_pstitleimg)
 
     if manual:
         print('Installing manual as', f + '/DOCUMENT.DAT')

diff --git a/popstation.py b/popstation.py
@@ -2417,6 +2417,7 @@ def __init__(self):
         self._striptracks = False
         # complevel is >0 for PSP and ==0 for PS3
         self._complevel = 1
+        self._no_pstitleimg = False
         self._disc_ids = ['SLUS00000']
         self._game_title = 'TITLE'
         self._icon0 = None
@@ -2578,6 +2579,14 @@ def complevel(self):
     def complevel(self, value):
         self._complevel = value
 
+    @property
+    def no_pstitleimg(self):
+        return self._no_pstitleimg
+
+    @no_pstitleimg.setter
+    def no_pstitleimg(self, value):
+        self._no_pstitleimg = value
+
     @property
     def striptracks(self):
         return self._striptracks
@@ -2719,7 +2728,7 @@ def bcd(i):
         # Block #1
         buf = bytearray(1024)
         buf[:12] = b'PSISOIMG0000'
-        struct.pack_into('<I', buf, 12, isosize + 0x100000) 
+        struct.pack_into('<I', buf, 12, isosize + 0x100000)
         fh.write(buf)
 
         # Block #2
@@ -2859,6 +2868,12 @@ def bcd(i):
 
         end_offset = end_offset + 0x2d31
 
+        # update the length at offset 0x1220
+        fh.seek(p2_offset)
+        buf = bytearray(4)
+        struct.pack_into('<I', buf, 0, end_offset)
+        fh.write(buf)
+
         if len(att):
             fh.seek(att_offset)
             fh.write(att)
@@ -3179,16 +3194,22 @@ def create_pbp(self):
         fh.write(_datapspbody)
 
         # Start of DATA.PSAR
-        _pstitle = bytearray(_pstitledata)
+        if not self._no_pstitleimg:
+            _pstitle = bytearray(_pstitledata)
 
-        # skip past _pstitle, we will write it later
-        fh.seek(_psar_offset + len(_pstitle))
+            # skip past _pstitle, we will write it later
+            fh.seek(_psar_offset + len(_pstitle))
+        else:
+            # If there is no PSTITLEIMG then the PSISOIMG will be aligned
+            # on the next 0x10000 boundary.
+            fh.seek( (fh.tell() + 0x10000) & 0xffff0000 )
 
         disc_num = 0
         psiso_offsets = []
         for img_toc in self._img_toc:
             fh.seek((fh.tell() + 0x7fff) & 0xffff8000)
-            struct.pack_into('<I', _pstitle, 0x200 + disc_num * 4, fh.tell() - _psar_offset)
+            if not self._no_pstitleimg:
+                struct.pack_into('<I', _pstitle, 0x200 + disc_num * 4, fh.tell() - _psar_offset)
             psiso_offsets.append(fh.tell())
             self.encode_psiso(fh, disc_num, img_toc)
             fh.seek(0, 2)
@@ -3198,26 +3219,28 @@ def create_pbp(self):
         # Add padding before STARTDAT
         fh.seek((fh.tell() + 0x0f) & 0xfffffff0)
 
-        # update PSTITLEIMG
         x = fh.tell()
-        _pstitle[:16] = b'PSTITLEIMG000000'
-        # update offset to STARTDAT
-        struct.pack_into('<I', _pstitle, 0x10, x - _psar_offset)
-        struct.pack_into('<I', _pstitle, 0x284, x - _psar_offset + 0x2d31)
-        # Update game id
-        gid = self._disc_ids[0]
-        _pstitle[0x264:0x264 + 11] = bytes('_' + gid[0:4] + '_' + gid[4:9], encoding='utf-8')
-        # Update game name
-        _t = bytes(self._game_title, encoding='utf-8')
-        _pstitle[0x30c:0x30c + len(_t)] = _t
-        print('Writing PSTITLEIMG.DAT') if self._verbose else None
-        fh.seek(_psar_offset)
-        fh.write(_pstitle)
-
-        if self._iso_bin_dat:
-            self.create_iso_bin_dat(fh, _pstitle, psiso_offsets)
-
+        if not self._no_pstitleimg:
+            # update PSTITLEIMG
+            _pstitle[:16] = b'PSTITLEIMG000000'
+            # update offset to STARTDAT
+            struct.pack_into('<I', _pstitle, 0x10, x - _psar_offset)
+            struct.pack_into('<I', _pstitle, 0x284, x - _psar_offset + 0x2d31)
+            # Update game id
+            gid = self._disc_ids[0]
+            _pstitle[0x264:0x264 + 11] = bytes('_' + gid[0:4] + '_' + gid[4:9], encoding='utf-8')
+            # Update game name
+            _t = bytes(self._game_title, encoding='utf-8')
+            _pstitle[0x30c:0x30c + len(_t)] = _t
+            print('Writing PSTITLEIMG.DAT') if self._verbose else None
+            fh.seek(_psar_offset)
+            fh.write(_pstitle)
+
+            if self._iso_bin_dat:
+                self.create_iso_bin_dat(fh, _pstitle, psiso_offsets)
+
         fh.seek(x)
+
         print('Writing STARTDAT header') if self._verbose else None
         struct.pack_into('<I', _startdatheader, 20, len(self._logo))
         fh.write(_startdatheader)