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use accurate im->linesize instead of strlen(mode) approximation

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This commit is contained in:
Alexander 2017-08-06 01:31:31 +03:00
parent d55557152b
commit 0990dadd6d
1 changed files with 2 additions and 11 deletions
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13
libImaging/Storage.c
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@ -371,26 +371,17 @@ ImagingAllocateBlock(Imaging im)
Imaging
ImagingNew(const char* mode, int xsize, int ysize)
{
int bytes;
Imaging im;
if (strlen(mode) == 1) {
if (mode[0] == 'F' || mode[0] == 'I')
bytes = 4;
else
bytes = 1;
} else
bytes = strlen(mode) || 1; /* close enough */
if (xsize < 0 || ysize < 0) {
return (Imaging) ImagingError_ValueError("bad image size");
}
im = ImagingNewPrologue(mode, xsize, ysize);
if (!im)
if ( ! im)
return NULL;
if ((int64_t) xsize * (int64_t) ysize <= THRESHOLD / bytes) {
if (im->ysize && im->linesize <= THRESHOLD / im->ysize) {
if (ImagingAllocateBlock(im)) {
return im;
}