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Commit FS#9915 by Sei Aoyumi. Adds hints to help GCC better optimize vorbis decoding. Gives a minor speed increase.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20030 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Giacomelli 2009-02-17 17:01:09 +00:00
parent 5593de5e79
commit bd60270418
4 changed files with 5 additions and 5 deletions
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4
apps/codecs/libtremor/bitwise.c
View file

@ -131,8 +131,8 @@ static int _halt_one(oggpack_buffer *b){
}
/* bits <= 32 */
long oggpack_read(oggpack_buffer *b,int bits) ICODE_ATTR_TREMOR_NOT_MDCT;
long oggpack_read(oggpack_buffer *b,int bits){
long oggpack_read(oggpack_buffer *b,register int bits) ICODE_ATTR_TREMOR_NOT_MDCT;
long oggpack_read(oggpack_buffer *b,register int bits){
unsigned long m=oggpack_mask[bits];
ogg_uint32_t ret=-1;

2
apps/codecs/libtremor/codebook.c
View file

@ -451,7 +451,7 @@ static long vorbis_book_decodevv_add_2ch_even(codebook *book,ogg_int32_t **a,
long vorbis_book_decodevv_add(codebook *book,ogg_int32_t **a,
long offset,int ch,
oggpack_buffer *b,int n,int point){
if(book->used_entries>0){
if(LIKELY(book->used_entries>0)){
long i,j,k,chunk,read;
int chptr=0;
int shift=point-book->binarypoint;

2
apps/codecs/libtremor/floor1.c
View file

@ -299,7 +299,7 @@ static void render_line(int n, int x0,register int x1,int y0,int y1,ogg_int32_t
if(n>x1)n=x1;
ady-=abs(base*adx);
if(x<n)
if(LIKELY(x<n))
d[x]= MULT31_SHIFT15(d[x],FLOOR_fromdB_LOOKUP[y]);
while(++x<n){

2
apps/codecs/libtremor/ogg.h
View file

@ -142,7 +142,7 @@ typedef struct {
extern void oggpack_readinit(oggpack_buffer *b,ogg_reference *r);
extern long oggpack_look_full(oggpack_buffer *b,int bits);
extern long oggpack_read(oggpack_buffer *b,int bits);
extern long oggpack_read(oggpack_buffer *b,register int bits);
/* Inline a few, often called functions */