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| author | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-01-22 02:05:10 +0100 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2021-03-28 18:45:20 +0200 |
| commit | 55b46902c1f855d02ea802de1285d68577a38806 (patch) | |
| tree | d945701257b5b4a4a7bbec469b94aa3d9507b547 | |
| parent | a42c47b77feda837a966aa96569ed8a2553b1c36 (diff) | |
| download | ffmpeg-55b46902c1f855d02ea802de1285d68577a38806.tar.gz | |
avfilter/asrc_sine: Fix invalid left shift of negative number
by using a multiplication instead. The multiplication can never overflow
an int because the sin-factor is only an int16_t.
Affected the FATE-tests filter-concat and filter-concat-vfr.
Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
| -rw-r--r-- | libavfilter/asrc_sine.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavfilter/asrc_sine.c b/libavfilter/asrc_sine.c index 6fe080efb6..3b7d2e6d00 100644 --- a/libavfilter/asrc_sine.c +++ b/libavfilter/asrc_sine.c @@ -247,7 +247,7 @@ static int request_frame(AVFilterLink *outlink) samples[i] = sine->sin[sine->phi >> (32 - LOG_PERIOD)]; sine->phi += sine->dphi; if (sine->beep_index < sine->beep_length) { - samples[i] += sine->sin[sine->phi_beep >> (32 - LOG_PERIOD)] << 1; + samples[i] += sine->sin[sine->phi_beep >> (32 - LOG_PERIOD)] * 2; sine->phi_beep += sine->dphi_beep; } if (++sine->beep_index == sine->beep_period) |