[FFmpeg-cvslog] avformat/jacosubdec: Factorize code in get_shift() a bit
Michael Niedermayer
git at videolan.org
Mon Oct 9 00:00:41 EEST 2023
ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sat Sep 30 19:34:29 2023 +0200| [6490b9aed63c06f20bbc46e0bc801e612d07e81e] | committer: Michael Niedermayer
avformat/jacosubdec: Factorize code in get_shift() a bit
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6490b9aed63c06f20bbc46e0bc801e612d07e81e
---
libavformat/jacosubdec.c | 14 +++++---------
1 file changed, 5 insertions(+), 9 deletions(-)
diff --git a/libavformat/jacosubdec.c b/libavformat/jacosubdec.c
index 61b1316dc9..42c201f93a 100644
--- a/libavformat/jacosubdec.c
+++ b/libavformat/jacosubdec.c
@@ -143,16 +143,12 @@ static int get_shift(int timeres, const char *buf)
ret = 0;
switch (n) {
- case 4:
- ret = sign * (((int64_t)a*3600 + (int64_t)b*60 + c) * timeres + d);
- break;
- case 3:
- ret = sign * (( (int64_t)a*60 + b) * timeres + c);
- break;
- case 2:
- ret = sign * (( (int64_t)a) * timeres + b);
- break;
+ case 1: a = 0;
+ case 2: c = b; b = a; a = 0;
+ case 3: d = c; c = b; b = a; a = 0;
}
+
+ ret = sign * (((int64_t)a*3600 + (int64_t)b*60 + c) * timeres + d);
if ((int)ret != ret)
ret = 0;
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