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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBitmap.h"
#include "SkColorPriv.h"
#include "SkMath.h"
#if defined(SK_BUILD_FOR_MAC)
#include <ApplicationServices/ApplicationServices.h>
#ifndef __ppc__
#define SWAP_16BIT
#endif
static void convertGL32_to_Mac32(uint32_t dst[], const SkBitmap& bm) {
memcpy(dst, bm.getPixels(), bm.getSize());
return;
uint32_t* stop = dst + (bm.getSize() >> 2);
const uint8_t* src = (const uint8_t*)bm.getPixels();
while (dst < stop) {
*dst++ = src[2] << 24 | src[1] << 16 | src[0] << 8 | src[3] << 0;
src += sizeof(uint32_t);
}
}
static void convert565_to_32(uint32_t dst[], const SkBitmap& bm) {
for (int y = 0; y < bm.height(); y++) {
const uint16_t* src = bm.getAddr16(0, y);
const uint16_t* stop = src + bm.width();
while (src < stop) {
unsigned c = *src++;
unsigned r = SkPacked16ToR32(c);
unsigned g = SkPacked16ToG32(c);
unsigned b = SkPacked16ToB32(c);
*dst++ = (b << 24) | (g << 16) | (r << 8) | 0xFF;
}
}
}
static void convert4444_to_555(uint16_t dst[], const uint16_t src[], int count)
{
const uint16_t* stop = src + count;
while (src < stop)
{
unsigned c = *src++;
unsigned r = SkGetPackedR4444(c);
unsigned g = SkGetPackedG4444(c);
unsigned b = SkGetPackedB4444(c);
// convert to 5 bits
r = (r << 1) | (r >> 3);
g = (g << 1) | (g >> 3);
b = (b << 1) | (b >> 3);
// build the 555
c = (r << 10) | (g << 5) | b;
#ifdef SWAP_16BIT
c = (c >> 8) | (c << 8);
#endif
*dst++ = c;
}
}
#include "SkTemplates.h"
static CGImageRef bitmap2imageref(const SkBitmap& bm) {
size_t bitsPerComp;
size_t bitsPerPixel;
CGBitmapInfo info;
CGColorSpaceRef cs = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);
CGDataProviderRef data = CGDataProviderCreateWithData(NULL,
bm.getPixels(),
bm.getSize(),
NULL);
SkAutoTCallVProc<CGDataProvider, CGDataProviderRelease> acp(data);
SkAutoTCallVProc<CGColorSpace, CGColorSpaceRelease> acp2(cs);
switch (bm.config()) {
case SkBitmap::kARGB_8888_Config:
bitsPerComp = 8;
bitsPerPixel = 32;
info = kCGImageAlphaPremultipliedLast;
break;
case SkBitmap::kARGB_4444_Config:
bitsPerComp = 4;
bitsPerPixel = 16;
info = kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder16Little;
break;
#if 0 // not supported by quartz !!!
case SkBitmap::kRGB_565_Config:
bitsPerComp = 5;
bitsPerPixel = 16;
info = kCGImageAlphaNone | kCGBitmapByteOrder16Little;
break;
#endif
default:
return NULL;
}
return CGImageCreate(bm.width(), bm.height(), bitsPerComp, bitsPerPixel,
bm.rowBytes(), cs, info, data,
NULL, false, kCGRenderingIntentDefault);
}
void SkBitmap::drawToPort(WindowRef wind, CGContextRef cg) const {
if (fPixels == NULL || fWidth == 0 || fHeight == 0) {
return;
}
bool useQD = false;
if (NULL == cg) {
SetPortWindowPort(wind);
QDBeginCGContext(GetWindowPort(wind), &cg);
useQD = true;
}
SkBitmap bm;
if (this->config() == kRGB_565_Config) {
this->copyTo(&bm, kARGB_8888_Config);
} else {
bm = *this;
}
bm.lockPixels();
CGImageRef image = bitmap2imageref(bm);
if (image) {
CGRect rect;
rect.origin.x = rect.origin.y = 0;
rect.size.width = bm.width();
rect.size.height = bm.height();
CGContextDrawImage(cg, rect, image);
CGImageRelease(image);
}
if (useQD) {
QDEndCGContext(GetWindowPort(wind), &cg);
}
}
#endif
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