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new internal API function ImagingNewDirty

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This commit is contained in:
Alexander 2017-08-06 01:50:55 +03:00
parent 0649da02c6
commit 7a1e70d997
2 changed files with 31 additions and 9 deletions
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1
libImaging/Imaging.h
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@ -159,6 +159,7 @@ struct ImagingPaletteInstance {
extern int ImagingNewCount;
extern Imaging ImagingNew(const char* mode, int xsize, int ysize);
extern Imaging ImagingNewDirty(const char* mode, int xsize, int ysize);
extern Imaging ImagingNew2(const char* mode, Imaging imOut, Imaging imIn);
extern void ImagingDelete(Imaging im);

39
libImaging/Storage.c
View File

@ -277,7 +277,7 @@ ImagingDestroyArray(Imaging im)
}
Imaging
ImagingAllocateArray(Imaging im)
ImagingAllocateArray(Imaging im, int dirty)
{
ImagingSectionCookie cookie;
@ -289,7 +289,11 @@ ImagingAllocateArray(Imaging im)
/* Allocate image as an array of lines */
for (y = 0; y < im->ysize; y++) {
/* malloc check linesize checked in prologue */
p = (char *) calloc(1, im->linesize);
if (dirty) {
p = (char *) malloc(im->linesize);
} else {
p = (char *) calloc(1, im->linesize);
}
if (!p) {
ImagingDestroyArray(im);
break;
@ -321,7 +325,7 @@ ImagingDestroyBlock(Imaging im)
}
Imaging
ImagingAllocateBlock(Imaging im)
ImagingAllocateBlock(Imaging im, int dirty)
{
Py_ssize_t y, i;
@ -341,8 +345,13 @@ ImagingAllocateBlock(Imaging im)
platforms */
im->block = (char *) malloc(1);
} else {
/* malloc check ok, overflow check above */
im->block = (char *) calloc(im->ysize, im->linesize);
if (dirty) {
/* malloc check ok, overflow check above */
im->block = (char *) malloc(im->ysize * im->linesize);
} else {
/* malloc check ok, overflow check above */
im->block = (char *) calloc(im->ysize, im->linesize);
}
}
if ( ! im->block) {
@ -369,7 +378,7 @@ ImagingAllocateBlock(Imaging im)
#endif
Imaging
ImagingNew(const char* mode, int xsize, int ysize)
ImagingNewInternal(const char* mode, int xsize, int ysize, int dirty)
{
Imaging im;
@ -382,14 +391,14 @@ ImagingNew(const char* mode, int xsize, int ysize)
return NULL;
if (im->ysize && im->linesize <= THRESHOLD / im->ysize) {
if (ImagingAllocateBlock(im)) {
if (ImagingAllocateBlock(im, dirty)) {
return im;
}
/* assume memory error; try allocating in array mode instead */
ImagingError_Clear();
}
if (ImagingAllocateArray(im)) {
if (ImagingAllocateArray(im, dirty)) {
return im;
}
@ -397,6 +406,18 @@ ImagingNew(const char* mode, int xsize, int ysize)
return NULL;
}
Imaging
ImagingNew(const char* mode, int xsize, int ysize)
{
return ImagingNewInternal(mode, xsize, ysize, 0);
}
Imaging
ImagingNewDirty(const char* mode, int xsize, int ysize)
{
return ImagingNewInternal(mode, xsize, ysize, 1);
}
Imaging
ImagingNewBlock(const char* mode, int xsize, int ysize)
{
@ -406,7 +427,7 @@ ImagingNewBlock(const char* mode, int xsize, int ysize)
if ( ! im)
return NULL;
if (ImagingAllocateBlock(im)) {
if (ImagingAllocateBlock(im, 0)) {
return im;
}