Module: libav Branch: release/0.7 Commit: d6f763659c6115e91d2fa981faffdb041d93f7a4
Author: Mans Rullgard <[email protected]> Committer: Anton Khirnov <[email protected]> Date: Tue Nov 15 22:33:49 2011 +0000 lavf: fix multiplication overflow in avformat_find_stream_info() Converting to double before the multiplication rather than after avoids an integer overflow in some cases. Signed-off-by: Mans Rullgard <[email protected]> (cherry picked from commit 52767d891c665ab1124fe4ce82d99b59673de7d2) Signed-off-by: Anton Khirnov <[email protected]> --- libavformat/utils.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/libavformat/utils.c b/libavformat/utils.c index d155599..aa3ca59 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -2368,7 +2368,7 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options) for (i=1; i<FF_ARRAY_ELEMS(st->info->duration_error); i++) { int framerate= get_std_framerate(i); int ticks= lrintf(dur*framerate/(1001*12)); - double error= dur - ticks*1001*12/(double)framerate; + double error = dur - (double)ticks*1001*12 / framerate; st->info->duration_error[i] += error*error; } st->info->duration_count++; _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
