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// 25 june 2016
#import "uipriv_darwin.h"
struct uiImage {
NSImage *i;
NSSize size;
NSMutableArray *swizzled;
};
uiImage *uiNewImage(double width, double height)
{
uiImage *i;
i = uiNew(uiImage);
i->size = NSMakeSize(width, height);
i->i = [[NSImage alloc] initWithSize:i->size];
i->swizzled = [NSMutableArray new];
return i;
}
void uiFreeImage(uiImage *i)
{
NSValue *v;
[i->i release];
// to be safe, do this after releasing the image
for (v in i->swizzled)
uiFree([v pointerValue]);
[i->swizzled release];
uiFree(i);
}
void uiImageAppend(uiImage *i, void *pixels, int pixelWidth, int pixelHeight, int pixelStride)
{
NSBitmapImageRep *repCalibrated, *repsRGB;
uint8_t *swizzled, *bp, *sp;
int x, y;
unsigned char *pix[1];
// OS X demands that R and B are in the opposite order from what we expect
// we must swizzle :(
// LONGTERM test on a big-endian system
swizzled = (uint8_t *) uiAlloc((pixelStride * pixelHeight * 4) * sizeof (uint8_t), "uint8_t[]");
bp = (uint8_t *) pixels;
sp = swizzled;
for (y = 0; y < pixelHeight * pixelStride; y += pixelStride)
for (x = 0; x < pixelStride; x++) {
sp[0] = bp[2];
sp[1] = bp[1];
sp[2] = bp[0];
sp[3] = bp[3];
sp += 4;
bp += 4;
}
pix[0] = (unsigned char *) swizzled;
repCalibrated = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:pix
pixelsWide:pixelWidth
pixelsHigh:pixelHeight
bitsPerSample:8
samplesPerPixel:4
hasAlpha:YES
isPlanar:NO
colorSpaceName:NSCalibratedRGBColorSpace
bitmapFormat:0
bytesPerRow:pixelStride
bitsPerPixel:32];
repsRGB = [repCalibrated bitmapImageRepByRetaggingWithColorSpace:[NSColorSpace sRGBColorSpace]];
[repCalibrated release];
[i->i addRepresentation:repsRGB];
[repsRGB setSize:i->size];
[repsRGB release];
// we need to keep swizzled alive for NSBitmapImageRep
[i->swizzled addObject:[NSValue valueWithPointer:swizzled]];
}
NSImage *imageImage(uiImage *i)
{
return i->i;
}
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