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printing error messages if something is wrong instead of just return NULL;

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Originally committed as revision 4530 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc
This commit is contained in:
Michael Niedermayer 2002-02-04 18:53:01 +00:00
parent 8a01d20ccb
commit b81cf27484
1 changed files with 16 additions and 3 deletions
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19
postproc/swscale.c
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@ -1127,11 +1127,24 @@ SwsContext *getSwsContext(int srcW, int srcH, int srcFormat, int dstW, int dstH,
if(srcFormat==IMGFMT_Y8) srcFormat=IMGFMT_Y800;
if(dstFormat==IMGFMT_Y8) dstFormat=IMGFMT_Y800;
if(!isSupportedIn(srcFormat)) return NULL;
if(!isSupportedOut(dstFormat)) return NULL;
if(!isSupportedIn(srcFormat))
{
fprintf(stderr, "swScaler: %s is not supported as input format\n", vo_format_name(srcFormat));
return NULL;
}
if(!isSupportedOut(dstFormat))
{
fprintf(stderr, "swScaler: %s is not supported as output format\n", vo_format_name(dstFormat));
return NULL;
}
/* sanity check */
if(srcW<4 || srcH<1 || dstW<8 || dstH<1) return NULL; //FIXME check if these are enough and try to lowwer them after fixing the relevant parts of the code
if(srcW<4 || srcH<1 || dstW<8 || dstH<1) //FIXME check if these are enough and try to lowwer them after fixing the relevant parts of the code
{
fprintf(stderr, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",
srcW, srcH, dstW, dstH);
return NULL;
}
if(!dstFilter) dstFilter= &dummyFilter;
if(!srcFilter) srcFilter= &dummyFilter;