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Fix 0-width and 0-height images other way

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This commit is contained in:
Alexander 2017-09-17 03:31:24 +03:00
parent 0054743100
commit fd907fbdc9
1 changed files with 10 additions and 16 deletions
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26
libImaging/Storage.c
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@ -278,9 +278,6 @@ _get_block(int requested_size, int dirty)
if ( ! _blocks) {
_blocks = calloc(sizeof(void*), MEMORY_CACHE_BLOCKS);
}
if ( ! requested_size) {
requested_size = 1;
}
if (_blocks_free > 0) {
_blocks_free -= 1;
// printf("get block: %p %d; _blocks_free: %d\n",
@ -343,16 +340,20 @@ ImagingAllocateArray(Imaging im, int dirty)
char* p;
int linesize, lines_per_block, blocks_count;
linesize = (im->linesize + MEMORY_ALIGN_LINES - 1) & -MEMORY_ALIGN_LINES;
if ( ! linesize || linesize > MEMORY_BLOCK_SIZE) {
lines_per_block = 1;
} else {
lines_per_block = MEMORY_BLOCK_SIZE / linesize;
/* 0-width or 0-height image. No need to do anything */
if ( ! im->linesize || ! im->ysize) {
return im;
}
linesize = (im->linesize + MEMORY_ALIGN_LINES - 1) & -MEMORY_ALIGN_LINES;
lines_per_block = MEMORY_BLOCK_SIZE / linesize;
if (lines_per_block == 0)
lines_per_block = 1;
blocks_count = (im->ysize + lines_per_block - 1) / lines_per_block;
// printf("NEW size: %dx%d, ls: %d, lpb: %d, blocks: %d\n",
// im->xsize, im->ysize, linesize, lines_per_block, blocks_count);
im->destroy = ImagingDestroyArray;
/* One extra ponter is always NULL */
im->blocks = (char **)calloc(sizeof(char *), blocks_count + 1);
if ( ! im->blocks) {
@ -368,8 +369,7 @@ ImagingAllocateArray(Imaging im, int dirty)
}
p = (char *)_get_block(lines_remained * linesize, dirty);
if ( ! p) {
ImagingDestroyArray(im);
break;
return (Imaging) ImagingError_MemoryError();
}
im->blocks[current_block] = p;
}
@ -384,12 +384,6 @@ ImagingAllocateArray(Imaging im, int dirty)
}
}
if (y != im->ysize) {
return (Imaging) ImagingError_MemoryError();
}
im->destroy = ImagingDestroyArray;
return im;
}