diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2013-07-01 10:01:33 +0200 |
|---|---|---|
| committer | Luca Barbato <lu_zero@gentoo.org> | 2013-07-02 20:05:47 +0200 |
| commit | 53d5d89c1b7534205e5f825918701dda56d18896 (patch) | |
| tree | e9555ce1af350b21add33f15776d694d3f142f54 /libavcodec/jpeg2000dec.c | |
| parent | 64f6570c6e2c5a0344383e89c7897809f0c6e1f1 (diff) | |
jpeg2000: Speed up jpeg2000_decode_tile()
Skip processing bands with dimension set to 0.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Diffstat (limited to 'libavcodec/jpeg2000dec.c')
| -rw-r--r-- | libavcodec/jpeg2000dec.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index 08c8c4df97..6a300bd8f5 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -1118,6 +1118,10 @@ static int jpeg2000_decode_tile(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile, int cblkno = 0, bandpos; 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; /* Loop on precincts */ for (precno = 0; precno < nb_precincts; precno++) { |