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Ubi SB: More accurate handling of group flag

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This commit is contained in:
NicknineTheEagle 2020-06-02 21:55:34 +03:00
parent dd6328046b
commit bfda03151d
1 changed files with 3 additions and 8 deletions
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11
src/meta/ubi_sb.c
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@ -1864,16 +1864,11 @@ static int parse_type_audio(ubi_sb_header* sb, off_t offset, STREAMFILE* sf) {
sb->is_streamed = 1;
}
/* apparently, there may also be other group ids based on various flags but they were not seen so far */
if (sb->cfg.audio_group_id && sb->cfg.audio_group_and) {
sb->group_id = read_32bit(offset + sb->cfg.audio_group_id, sf);
if (sb->cfg.audio_group_and) sb->group_id &= sb->cfg.audio_group_and;
/* normalize bitflag, known groups are only id 0/1 (if needed could calculate
* shift-right value here, based on cfg.audio_group_and first 1-bit) */
if (sb->group_id > 1)
sb->group_id = 1;
int group_flag = read_32bit(offset + sb->cfg.audio_group_id, sf) & sb->cfg.audio_group_and;
sb->group_id = (!group_flag) ? 0 : 1;
} else {
/* apparently, there may also be group id 2 but it was not seen so far */
sb->group_id = (sb->stream_type == 0x01) ? 0 : 1;
}