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Check return values of sws_allocVec() and sws_getConstVec().

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Originally committed as revision 29543 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Ramiro Polla 2009-08-20 01:55:45 +00:00
parent 8a3c86277b
commit 1b03a9d607
1 changed files with 21 additions and 0 deletions
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21
libswscale/swscale.c
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@ -3259,6 +3259,9 @@ SwsVector *sws_getGaussianVec(double variance, double quality)
double middle= (length-1)*0.5;
SwsVector *vec= sws_allocVec(length);
if (!vec)
return NULL;
for (i=0; i<length; i++) {
double dist= i-middle;
vec->coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);
@ -3274,6 +3277,9 @@ SwsVector *sws_getConstVec(double c, int length)
int i;
SwsVector *vec= sws_allocVec(length);
if (!vec)
return NULL;
for (i=0; i<length; i++)
vec->coeff[i]= c;
@ -3316,6 +3322,9 @@ static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b)
int i, j;
SwsVector *vec= sws_getConstVec(0.0, length);
if (!vec)
return NULL;
for (i=0; i<a->length; i++) {
for (j=0; j<b->length; j++) {
vec->coeff[i+j]+= a->coeff[i]*b->coeff[j];
@ -3331,6 +3340,9 @@ static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b)
int i;
SwsVector *vec= sws_getConstVec(0.0, length);
if (!vec)
return NULL;
for (i=0; i<a->length; i++) vec->coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
for (i=0; i<b->length; i++) vec->coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];
@ -3343,6 +3355,9 @@ static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b)
int i;
SwsVector *vec= sws_getConstVec(0.0, length);
if (!vec)
return NULL;
for (i=0; i<a->length; i++) vec->coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
for (i=0; i<b->length; i++) vec->coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];
@ -3356,6 +3371,9 @@ static SwsVector *sws_getShiftedVec(SwsVector *a, int shift)
int i;
SwsVector *vec= sws_getConstVec(0.0, length);
if (!vec)
return NULL;
for (i=0; i<a->length; i++) {
vec->coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];
}
@ -3404,6 +3422,9 @@ SwsVector *sws_cloneVec(SwsVector *a)
int i;
SwsVector *vec= sws_allocVec(a->length);
if (!vec)
return NULL;
for (i=0; i<a->length; i++) vec->coeff[i]= a->coeff[i];
return vec;