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| 1 /* | |
| 2 * Copyright 2011 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #include "SkBitmap.h" | |
| 9 #include "SkColorPriv.h" | |
| 10 #include "SkMath.h" | |
| 11 | |
| 12 #if defined(SK_BUILD_FOR_MAC) | |
| 13 | |
| 14 #include <ApplicationServices/ApplicationServices.h> | |
| 15 | |
| 16 #ifndef __ppc__ | |
| 17 #define SWAP_16BIT | |
| 18 #endif | |
| 19 | |
| 20 static void convertGL32_to_Mac32(uint32_t dst[], const SkBitmap& bm) { | |
| 21 memcpy(dst, bm.getPixels(), bm.getSize()); | |
| 22 return; | |
| 23 | |
| 24 uint32_t* stop = dst + (bm.getSize() >> 2); | |
| 25 const uint8_t* src = (const uint8_t*)bm.getPixels(); | |
| 26 while (dst < stop) { | |
| 27 *dst++ = src[2] << 24 | src[1] << 16 | src[0] << 8 | src[3] << 0; | |
| 28 src += sizeof(uint32_t); | |
| 29 } | |
| 30 } | |
| 31 | |
| 32 static void convert565_to_32(uint32_t dst[], const SkBitmap& bm) { | |
| 33 for (int y = 0; y < bm.height(); y++) { | |
| 34 const uint16_t* src = bm.getAddr16(0, y); | |
| 35 const uint16_t* stop = src + bm.width(); | |
| 36 while (src < stop) { | |
| 37 unsigned c = *src++; | |
| 38 unsigned r = SkPacked16ToR32(c); | |
| 39 unsigned g = SkPacked16ToG32(c); | |
| 40 unsigned b = SkPacked16ToB32(c); | |
| 41 | |
| 42 *dst++ = (b << 24) | (g << 16) | (r << 8) | 0xFF; | |
| 43 } | |
| 44 } | |
| 45 } | |
| 46 | |
| 47 static void convert4444_to_555(uint16_t dst[], const uint16_t src[], int count) | |
| 48 { | |
| 49 const uint16_t* stop = src + count; | |
| 50 | |
| 51 while (src < stop) | |
| 52 { | |
| 53 unsigned c = *src++; | |
| 54 | |
| 55 unsigned r = SkGetPackedR4444(c); | |
| 56 unsigned g = SkGetPackedG4444(c); | |
| 57 unsigned b = SkGetPackedB4444(c); | |
| 58 // convert to 5 bits | |
| 59 r = (r << 1) | (r >> 3); | |
| 60 g = (g << 1) | (g >> 3); | |
| 61 b = (b << 1) | (b >> 3); | |
| 62 // build the 555 | |
| 63 c = (r << 10) | (g << 5) | b; | |
| 64 | |
| 65 #ifdef SWAP_16BIT | |
| 66 c = (c >> 8) | (c << 8); | |
| 67 #endif | |
| 68 *dst++ = c; | |
| 69 } | |
| 70 } | |
| 71 | |
| 72 #include "SkTemplates.h" | |
| 73 | |
| 74 static CGImageRef bitmap2imageref(const SkBitmap& bm) { | |
| 75 size_t bitsPerComp; | |
| 76 size_t bitsPerPixel; | |
| 77 CGBitmapInfo info; | |
| 78 CGColorSpaceRef cs = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB); | |
| 79 CGDataProviderRef data = CGDataProviderCreateWithData(NULL, | |
| 80 bm.getPixels(), | |
| 81 bm.getSize(), | |
| 82 NULL); | |
| 83 SkAutoTCallVProc<CGDataProvider, CGDataProviderRelease> acp(data); | |
| 84 SkAutoTCallVProc<CGColorSpace, CGColorSpaceRelease> acp2(cs); | |
| 85 | |
| 86 switch (bm.config()) { | |
| 87 case SkBitmap::kARGB_8888_Config: | |
| 88 bitsPerComp = 8; | |
| 89 bitsPerPixel = 32; | |
| 90 info = kCGImageAlphaPremultipliedLast; | |
| 91 break; | |
| 92 case SkBitmap::kARGB_4444_Config: | |
| 93 bitsPerComp = 4; | |
| 94 bitsPerPixel = 16; | |
| 95 info = kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder16Little; | |
| 96 break; | |
| 97 #if 0 // not supported by quartz !!! | |
| 98 case SkBitmap::kRGB_565_Config: | |
| 99 bitsPerComp = 5; | |
| 100 bitsPerPixel = 16; | |
| 101 info = kCGImageAlphaNone | kCGBitmapByteOrder16Little; | |
| 102 break; | |
| 103 #endif | |
| 104 default: | |
| 105 return NULL; | |
| 106 } | |
| 107 | |
| 108 return CGImageCreate(bm.width(), bm.height(), bitsPerComp, bitsPerPixel, | |
| 109 bm.rowBytes(), cs, info, data, | |
| 110 NULL, false, kCGRenderingIntentDefault); | |
| 111 } | |
| 112 | |
| 113 void SkBitmap::drawToPort(WindowRef wind, CGContextRef cg) const { | |
| 114 if (fPixels == NULL || fWidth == 0 || fHeight == 0) { | |
| 115 return; | |
| 116 } | |
| 117 | |
| 118 bool useQD = false; | |
| 119 if (NULL == cg) { | |
| 120 SetPortWindowPort(wind); | |
| 121 QDBeginCGContext(GetWindowPort(wind), &cg); | |
| 122 useQD = true; | |
| 123 } | |
| 124 | |
| 125 SkBitmap bm; | |
| 126 if (this->config() == kRGB_565_Config) { | |
| 127 this->copyTo(&bm, kARGB_8888_Config); | |
| 128 } else { | |
| 129 bm = *this; | |
| 130 } | |
| 131 bm.lockPixels(); | |
| 132 | |
| 133 CGImageRef image = bitmap2imageref(bm); | |
| 134 if (image) { | |
| 135 CGRect rect; | |
| 136 rect.origin.x = rect.origin.y = 0; | |
| 137 rect.size.width = bm.width(); | |
| 138 rect.size.height = bm.height(); | |
| 139 | |
| 140 CGContextDrawImage(cg, rect, image); | |
| 141 CGImageRelease(image); | |
| 142 } | |
| 143 | |
| 144 if (useQD) { | |
| 145 QDEndCGContext(GetWindowPort(wind), &cg); | |
| 146 } | |
| 147 } | |
| 148 | |
| 149 #endif | |
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Chromium Code Reviews
Issue 17335008:
remove dst/rendertarget support for kARGB_4444_Config (Closed)
Base URL: https://skia.googlecode.com/svn/trunk