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Ubi SB: Implement rotating IDs for SMx

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This commit is contained in:
NicknineTheEagle 2018-12-31 02:57:58 +03:00
parent 7ce512eee2
commit 2087ef84bf
1 changed files with 35 additions and 16 deletions
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51
src/meta/ubi_sb.c
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@ -600,26 +600,41 @@ static int parse_sb_header(ubi_sb_header * sb, STREAMFILE *streamFile, int targe
int current_is_external = 0;
int type = read_32bit(offset + sb->stream_type_offset, streamFile);
if (current_type == -1)
current_type = type;
if (current_id == -1) /* use first ID in section3 */
current_id = read_32bit(sb->section3_offset + 0x00, streamFile);
if (sb->external_flag_offset) {
current_is_external = read_32bit(offset + sb->external_flag_offset, streamFile);
} else if (sb->has_extra_name_flag && read_32bit(offset + sb->extra_name_offset, streamFile) != 0xFFFFFFFF) {
current_is_external = 1; /* -1 in extra_name means internal */
}
if (!current_is_external) {
if (current_type != type) {
current_type = type;
current_id++; /* rotate */
if (current_id >= sb->section3_num)
current_id = 0; /* reset */
}
if (sb->is_map) {
if (current_type == -1)
current_type = type;
if (current_id == -1) /* they seem to always start with 0 in maps */
current_id = 0x00;
if (!current_is_external) {
if (current_type != type) {
current_type = type;
current_id++; /* rotate */
/* we'll warp it around later when parsing section 3 */
}
}
} else {
if (current_type == -1)
current_type = type;
if (current_id == -1) /* use first ID in section3 */
current_id = read_32bit(sb->section3_offset + 0x00, streamFile);
if (!current_is_external) {
if (current_type != type) {
current_type = type;
current_id++; /* rotate */
if (current_id >= sb->section3_num)
current_id = 0; /* reset */
}
}
}
}
}
@ -840,11 +855,15 @@ static int parse_sb_header(ubi_sb_header * sb, STREAMFILE *streamFile, int targe
int idx = read_32bit(table_offset + 0x08 * j + 0x00, streamFile) & 0x0000FFFF;
if (idx == sb->header_idx) {
if (!sb->stream_id_offset && table2_num > 1) {
VGM_LOG("UBI SB: unexpected number of internal stream groups %i\n", sb->section3_num);
if (!(sb->stream_id_offset || sb->has_rotating_ids) && table2_num > 1) {
VGM_LOG("UBI SB: unexpected number of internal stream groups %i\n", table2_num);
goto fail;
}
if (sb->has_rotating_ids) {
sb->stream_id %= table2_num;
}
sb->stream_offset = read_32bit(table_offset + 0x08 * j + 0x04, streamFile);
for (k = 0; k < table2_num; k++) {
/* entry layout:
@ -1285,7 +1304,7 @@ static int config_sb_header_version(ubi_sb_header * sb, STREAMFILE *streamFile)
sb->extra_name_offset = 0x40;
sb->has_extra_name_flag = 1;
//sb->has_rotating_ids = 1;
sb->has_rotating_ids = 1;
return 1;
}
@ -1378,7 +1397,7 @@ static int config_sb_header_version(ubi_sb_header * sb, STREAMFILE *streamFile)
sb->extra_name_offset = 0x4c;
sb->has_extra_name_flag = 1;
//sb->has_rotating_ids = 1;
sb->has_rotating_ids = 1;
return 1;
}