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avcodec/svq3: Fix runtime error: left shift of negative value -6
Fixes: 1604/clusterfuzz-testcase-minimized-5312060206350336 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -524,8 +524,8 @@ static inline int svq3_mc_dir(SVQ3Context *s, int size, int mode,
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if (mode != PREDICT_MODE) {
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if (mode != PREDICT_MODE) {
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svq3_pred_motion(s, k, part_width >> 2, dir, 1, &mx, &my);
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svq3_pred_motion(s, k, part_width >> 2, dir, 1, &mx, &my);
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} else {
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} else {
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mx = s->next_pic->motion_val[0][b_xy][0] << 1;
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mx = s->next_pic->motion_val[0][b_xy][0] * 2;
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my = s->next_pic->motion_val[0][b_xy][1] << 1;
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my = s->next_pic->motion_val[0][b_xy][1] * 2;
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if (dir == 0) {
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if (dir == 0) {
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mx = mx * s->frame_num_offset /
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mx = mx * s->frame_num_offset /
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