Fixed bug when seeking to pos < dataoffset

xiph · Aug 13, 2020 · f9cede2 · f9cede2
1 parent 4a767c9
commit f9cede2
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/lib/vorbisfile.c b/lib/vorbisfile.c
@@ -1441,7 +1441,10 @@ int ov_pcm_seek_page(OggVorbis_File *vf,ogg_int64_t pos){
     int         got_page=0;
 
     ogg_page og;
-
+
+    if (pos < begin) begin = pos;
+    ogg_int64_t initialBegin = begin;
+
     /* if we have only one page, there will be no bisection.  Grab the page here */
     if(begin==end){
       result=_seek_helper(vf,begin);
@@ -1560,7 +1563,7 @@ int ov_pcm_seek_page(OggVorbis_File *vf,ogg_int64_t pos){
          first PCM granule position fencepost. */
 
       if(got_page &&
-         begin == vf->dataoffsets[link] &&
+         begin == initialBegin &&
          ogg_page_serialno(&og)==vf->serialnos[link]){
 
         /* Yes, this is the beginning-of-stream case. We already have