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Fix return typo, disambiguate else, and check for the complete fishead identifier

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Kevin Croft 2018-11-18 19:07:55 -08:00 committed by Sean Barrett
parent 604b9367ee
commit d1dc3fe89c
1 changed files with 5 additions and 2 deletions
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7
stb_vorbis.c
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@ -3579,7 +3579,7 @@ static int start_decoder(vorb *f)
if (f->page_flag & PAGEFLAG_continued_packet) return error(f, VORBIS_invalid_first_page);
// check for expected packet length
if (f->segment_count != 1) return error(f, VORBIS_invalid_first_page);
if (f->segments[0] != 30) return error(f, VORBIS_invalid_first_page);
if (f->segments[0] != 30) {
// check for the Ogg skeleton fishead identifying header to refine our error
if (f->segments[0] == 64 &&
getn(f, header, 6) &&
@ -3589,9 +3589,12 @@ static int start_decoder(vorb *f)
header[3] == 'h' &&
header[4] == 'e' &&
header[5] == 'a' &&
get8(f) == 'd') return error(f, VORBIS_ogg_skeleton_not_supported);
get8(f) == 'd' &&
get8(f) == '\0') return error(f, VORBIS_ogg_skeleton_not_supported);
else
return error(f, VORBIS_invalid_first_page);
}
// read packet
// check packet header
if (get8(f) != VORBIS_packet_id) return error(f, VORBIS_invalid_first_page);