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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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