Bug 1934086 - Update libvorbis to 315da9c. r=media-playback-reviewers,alwu

Depends on D237200

Differential Revision: https://phabricator.services.mozilla.com/D237201

media/libvorbis/lib/vorbis_psy.c

@@ -339,6 +339,10 @@ void _vp_psy_init(vorbis_look_psy *p,vorbis_info_psy *vi,
     if(halfoc<0)halfoc=0;
     if(halfoc>=P_BANDS-1)halfoc=P_BANDS-1;
     inthalfoc=(int)halfoc;
+    /*If we hit the P_BANDS-1 clamp above, inthalfoc+1 will be out of bounds,
+       even though it will have an interpolation weight of 0.
+      Shift the interval so we don't read past the end of the array.*/
+    if(inthalfoc>=P_BANDS-2)inthalfoc=P_BANDS-2;
     del=halfoc-inthalfoc;
 
     for(j=0;j<P_NOISECURVES;j++)

media/libvorbis/lib/vorbis_sharedbook.c

@@ -422,7 +422,7 @@ int vorbis_book_init_decode(codebook *c,const static_codebook *s){
         long lo=0,hi=0;
 
         for(i=0;i<tabn;i++){
-          ogg_uint32_t word=i<<(32-c->dec_firsttablen);
+          ogg_uint32_t word=((ogg_uint32_t)i<<(32-c->dec_firsttablen));
           if(c->dec_firsttable[bitreverse(word)]==0){
             while((lo+1)<n && c->codelist[lo+1]<=word)lo++;
             while(    hi<n && word>=(c->codelist[hi]&mask))hi++;
@@ -581,7 +581,7 @@ void run_test(static_codebook *b,float *comp){
       exit(1);
     }
   }
-  free(out);
+  _ogg_free(out);
 }
 
 int main(){

media/libvorbis/moz.yaml

@@ -10,8 +10,8 @@ origin:
 
   url: https://xiph.org/vorbis/
 
-  release: v1.3.7 (2020-07-03T19:38:28-07:00).
-  revision: v1.3.7
+  release: 315da9cc9d30484c802b2e2ea150df39e060e2b9 (2025-02-05T08:11:19.000-08:00).
+  revision: 315da9cc9d30484c802b2e2ea150df39e060e2b9
 
 
   license: BSD-3-Clause