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| author | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2021-03-26 06:03:49 +0100 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2021-04-02 21:39:19 +0200 |
| commit | a8fb9c9d2740c54adb5192f02207a32a66f29618 (patch) | |
| tree | 1715e799cce7b009b9f9dd018efd4af4c779da05 | |
| parent | 5e2e8e1b9e2877062ae881ae68a69b4e12f6ed13 (diff) | |
| download | ffmpeg-a8fb9c9d2740c54adb5192f02207a32a66f29618.tar.gz | |
avcodec/dcaenc: Fix undefined left shift of negative numbers
Affected the acodec-dca and acodec-dca2 FATE tests.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
(cherry picked from commit 659a925939011338cac1ab3c21d58d4b077fc926)
| -rw-r--r-- | libavcodec/dcaenc.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/libavcodec/dcaenc.c b/libavcodec/dcaenc.c index a40d2e0ca0..87fb5f5457 100644 --- a/libavcodec/dcaenc.c +++ b/libavcodec/dcaenc.c @@ -925,10 +925,10 @@ static void fill_in_adpcm_bufer(DCAEncContext *c) * But there are no proper value in decoder history, so likely result will be no good. * Bitstream has "Predictor history flag switch", but this flag disables history for all subbands */ - samples[0] = c->adpcm_history[ch][band][0] << 7; - samples[1] = c->adpcm_history[ch][band][1] << 7; - samples[2] = c->adpcm_history[ch][band][2] << 7; - samples[3] = c->adpcm_history[ch][band][3] << 7; + samples[0] = c->adpcm_history[ch][band][0] * (1 << 7); + samples[1] = c->adpcm_history[ch][band][1] * (1 << 7); + samples[2] = c->adpcm_history[ch][band][2] * (1 << 7); + samples[3] = c->adpcm_history[ch][band][3] * (1 << 7); } } } |