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Code Issues Releases Activity

avcodec/snowenc: Fix 2 undefined shifts

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Fixes: Ticket7990

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 8802e329c8)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-10-14 22:51:57 +02:00
parent 5729bbfdc7
commit ef9340a9dc
1 changed files with 2 additions and 2 deletions
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4
libavcodec/snowenc.c
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@ -302,7 +302,7 @@ static int encode_q_branch(SnowContext *s, int level, int x, int y){
if(P_LEFT[1] > (c->ymax<<shift)) P_LEFT[1] = (c->ymax<<shift);
if(P_TOP[0] > (c->xmax<<shift)) P_TOP[0] = (c->xmax<<shift);
if(P_TOP[1] > (c->ymax<<shift)) P_TOP[1] = (c->ymax<<shift);
if(P_TOPRIGHT[0] < (c->xmin<<shift)) P_TOPRIGHT[0]= (c->xmin<<shift);
if(P_TOPRIGHT[0] < (c->xmin * (1<<shift))) P_TOPRIGHT[0]= (c->xmin * (1<<shift));
if(P_TOPRIGHT[0] > (c->xmax<<shift)) P_TOPRIGHT[0]= (c->xmax<<shift); //due to pmx no clip
if(P_TOPRIGHT[1] > (c->ymax<<shift)) P_TOPRIGHT[1]= (c->ymax<<shift);
@ -1757,7 +1757,7 @@ redo_frame:
}else{
for(y=0; y<h; y++){
for(x=0; x<w; x++){
s->spatial_dwt_buffer[y*w + x]=s->spatial_idwt_buffer[y*w + x]<<ENCODER_EXTRA_BITS;
s->spatial_dwt_buffer[y*w + x]= s->spatial_idwt_buffer[y*w + x] * (1 << ENCODER_EXTRA_BITS);
}
}
}