virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

jpeg2000: Speed up jpeg2000_decode_tile()

Browse Source 
Skip processing bands with dimension set to 0.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Michael Niedermayer 2013-07-01 10:01:33 +02:00 committed by Luca Barbato
parent 64f6570c6e
commit 53d5d89c1b
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
libavcodec/jpeg2000dec.c
View File

@ -1118,6 +1118,10 @@ static int jpeg2000_decode_tile(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile,
int cblkno = 0, bandpos; int cblkno = 0, bandpos;
bandpos = bandno + (reslevelno > 0); bandpos = bandno + (reslevelno > 0);
if (band->coord[0][0] == band->coord[0][1] ||
band->coord[1][0] == band->coord[1][1])
continue;
nb_precincts = rlevel->num_precincts_x * rlevel->num_precincts_y; nb_precincts = rlevel->num_precincts_x * rlevel->num_precincts_y;
/* Loop on precincts */ /* Loop on precincts */
for (precno = 0; precno < nb_precincts; precno++) { for (precno = 0; precno < nb_precincts; precno++) {