generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

h264_mb: Use smaller data type for refs in await_references.

Browse Source 
As far as I can tell the value can never go outside
the int16_t type.
And especially the cost of the initialization is
reduced quite a bit by making it smaller.
Overall decoding speedup not measurable though.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
This commit is contained in:
Reimar Döffinger 2014-11-15 18:53:58 +01:00
parent 478c61ccb2
commit 33fc1ccb49
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
libavcodec/h264_mb.c
View File

@ -49,7 +49,7 @@ static inline int get_lowest_part_list_y(H264Context *h, H264Picture *pic, int n
return FFMAX(0, bottom); return FFMAX(0, bottom);
} }
static inline void get_lowest_part_y(H264Context *h, int refs[2][48], int n, static inline void get_lowest_part_y(H264Context *h, int16_t refs[2][48], int n,
int height, int y_offset, int list0, int height, int y_offset, int list0,
int list1, int *nrefs) int list1, int *nrefs)
{ {
@ -96,7 +96,7 @@ static void await_references(H264Context *h)
{ {
const int mb_xy = h->mb_xy; const int mb_xy = h->mb_xy;
const int mb_type = h->cur_pic.mb_type[mb_xy]; const int mb_type = h->cur_pic.mb_type[mb_xy];
int refs[2][48]; int16_t refs[2][48];
int nrefs[2] = { 0 }; int nrefs[2] = { 0 };
int ref, list; int ref, list;