libtremor: merge upstream revisions 17541, 17542, 17543, 17544, 17545, 17546, 17547, 17555, 17572, bringing in various fixes and finally bringing our libtremor up to date, for now.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28773 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 10 insertions, 6 deletions

diff --git a/apps/codecs/libtremor/codebook.c b/apps/codecs/libtremor/codebook.c
index e00d648..9413257 100644
--- a/apps/codecs/libtremor/codebook.c
+++ b/apps/codecs/libtremor/codebook.c
@@ -380,6 +380,7 @@ long vorbis_book_decode(codebook *book, oggpack_buffer *b){
 }
 
 /* returns 0 on OK or -1 on eof *************************************/
+/* decode vector / dim granularity gaurding is done in the upper layer */
 long vorbis_book_decodevs_add(codebook *book,ogg_int32_t *a,
                               oggpack_buffer *b,int n,int point){
   if(book->used_entries>0){  
@@ -412,6 +413,7 @@ long vorbis_book_decodevs_add(codebook *book,ogg_int32_t *a,
   return(0);
 }
 
+/* decode vector / dim granularity gaurding is done in the upper layer */
 long vorbis_book_decodev_add(codebook *book,ogg_int32_t *a,
                              oggpack_buffer *b,int n,int point){
   if(book->used_entries>0){
@@ -441,6 +443,9 @@ long vorbis_book_decodev_add(codebook *book,ogg_int32_t *a,
   return(0);
 }
 
+/* unlike the others, we guard against n not being an integer number
+   of <dim> internally rather than in the upper layer (called only by
+   floor0) */
 long vorbis_book_decodev_set(codebook *book,ogg_int32_t *a,
                              oggpack_buffer *b,int n,int point){
   if(book->used_entries>0){
@@ -454,7 +459,7 @@ long vorbis_book_decodev_set(codebook *book,ogg_int32_t *a,
         entry = decode_packed_entry_number(book,b);
         if(entry==-1)return(-1);
         t     = book->valuelist+entry*book->dim;
-        for (j=0;j<book->dim;){
+	for (j=0;i<n && j<book->dim;){
           a[i++]=t[j++]>>shift;
         }
       }
@@ -464,23 +469,22 @@ long vorbis_book_decodev_set(codebook *book,ogg_int32_t *a,
         entry = decode_packed_entry_number(book,b);
         if(entry==-1)return(-1);
         t     = book->valuelist+entry*book->dim;
-        for (j=0;j<book->dim;){
+	for (j=0;i<n && j<book->dim;){
           a[i++]=t[j++]<<shift;
         }
       }
     }
   }else{
 
-    int i,j;
+    int i;
     for(i=0;i<n;){
-      for (j=0;j<book->dim;){
-        a[i++]=0;
-      }
+      a[i++]=0;
     }
   }
   return(0);
 }
 
+/* decode vector / dim granularity gaurding is done in the upper layer */
 static long vorbis_book_decodevv_add_2ch_even(codebook *book,ogg_int32_t **a,
                                               long offset,oggpack_buffer *b,
                                               unsigned int n,int point){