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