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Vorbis: Improve ability to decode old files (using floor0). Not enough to be able to decode one test file though...

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10323 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Magnus Holmgren 2006-07-25 18:04:43 +00:00
parent f18f9a8061
commit e0d64b95db
1 changed files with 10 additions and 5 deletions
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15
apps/codecs/Tremor/sharedbook.c
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@ -26,9 +26,10 @@
/* Size (in number of entries) for static buffers in book_init_decode, so
* that large alloca() calls can be avoided, which is needed in Rockbox.
* This is enough for one certain test file...
* This is more than enough for one certain test file (which needs 6561
* entries)...
*/
#define BOOK_INIT_MAXSIZE 3072
#define BOOK_INIT_MAXSIZE 8192
/* Max value in static_codebook.dim we expect to find in _book_unquantize.
* Used to avoid some temporary allocations. Again, enough for some test
@ -83,7 +84,11 @@ static ogg_int32_t _float32_unpack(long val,int *point){
ogg_uint32_t *_make_words(long *l,long n,long sparsecount){
long i,j,count=0;
ogg_uint32_t marker[33];
ogg_uint32_t *r=(ogg_uint32_t *)_ogg_malloc((sparsecount?sparsecount:n)*sizeof(*r));
/* Avoid temporary malloc; _make_words is only called from
* vorbis_book_init_decode, and the result is only used for a short while.
*/
static ogg_uint32_t r[BOOK_INIT_MAXSIZE];
/* ogg_uint32_t *r=(ogg_uint32_t *)_ogg_malloc((sparsecount?sparsecount:n)*sizeof(*r)); */
memset(marker,0,sizeof(marker));
for(i=0;i<n;i++){
@ -99,7 +104,7 @@ ogg_uint32_t *_make_words(long *l,long n,long sparsecount){
/* update ourself */
if(length<32 && (entry>>length)){
/* error condition; the lengths must specify an overpopulated tree */
_ogg_free(r);
/* _ogg_free(r); */
return(NULL);
}
r[count++]=entry;
@ -401,7 +406,7 @@ int vorbis_book_init_decode(codebook *c,const static_codebook *s){
for(i=0;i<n;i++)
c->codelist[sortindex[i]]=codes[i];
_ogg_free(codes);
/* _ogg_free(codes); */
}