epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 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 | */ |
mtklein | 1ee7651 | 2015-11-02 10:20:27 -0800 | [diff] [blame] | 7 | |
| 8 | #include "SkTypes.h" |
| 9 | #if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS) |
| 10 | |
reed@android.com | 0d55f1e | 2008-12-18 19:26:11 +0000 | [diff] [blame] | 11 | #include "SkCGUtils.h" |
reed@android.com | 758b129 | 2008-12-18 17:54:12 +0000 | [diff] [blame] | 12 | #include "SkBitmap.h" |
Cary Clark | a4083c9 | 2017-09-15 11:59:23 -0400 | [diff] [blame] | 13 | #include "SkColorData.h" |
reed@android.com | 758b129 | 2008-12-18 17:54:12 +0000 | [diff] [blame] | 14 | |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 15 | static CGBitmapInfo ComputeCGAlphaInfo_RGBA(SkAlphaType at) { |
| 16 | CGBitmapInfo info = kCGBitmapByteOrder32Big; |
| 17 | switch (at) { |
reed | 4497748 | 2015-02-27 10:23:00 -0800 | [diff] [blame] | 18 | case kUnknown_SkAlphaType: |
| 19 | break; |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 20 | case kOpaque_SkAlphaType: |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 21 | info |= kCGImageAlphaNoneSkipLast; |
| 22 | break; |
| 23 | case kPremul_SkAlphaType: |
| 24 | info |= kCGImageAlphaPremultipliedLast; |
| 25 | break; |
| 26 | case kUnpremul_SkAlphaType: |
| 27 | info |= kCGImageAlphaLast; |
| 28 | break; |
| 29 | } |
| 30 | return info; |
| 31 | } |
| 32 | |
| 33 | static CGBitmapInfo ComputeCGAlphaInfo_BGRA(SkAlphaType at) { |
| 34 | CGBitmapInfo info = kCGBitmapByteOrder32Little; |
| 35 | switch (at) { |
reed | 4497748 | 2015-02-27 10:23:00 -0800 | [diff] [blame] | 36 | case kUnknown_SkAlphaType: |
| 37 | break; |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 38 | case kOpaque_SkAlphaType: |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 39 | info |= kCGImageAlphaNoneSkipFirst; |
| 40 | break; |
| 41 | case kPremul_SkAlphaType: |
| 42 | info |= kCGImageAlphaPremultipliedFirst; |
| 43 | break; |
| 44 | case kUnpremul_SkAlphaType: |
| 45 | info |= kCGImageAlphaFirst; |
| 46 | break; |
| 47 | } |
| 48 | return info; |
| 49 | } |
| 50 | |
reed@android.com | 2b26cac | 2008-12-22 02:33:11 +0000 | [diff] [blame] | 51 | static void SkBitmap_ReleaseInfo(void* info, const void* pixelData, size_t size) { |
reed@android.com | 758b129 | 2008-12-18 17:54:12 +0000 | [diff] [blame] | 52 | SkBitmap* bitmap = reinterpret_cast<SkBitmap*>(info); |
| 53 | delete bitmap; |
| 54 | } |
| 55 | |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 56 | static bool getBitmapInfo(const SkBitmap& bm, |
reed@google.com | 9c16bc0 | 2011-06-28 21:52:34 +0000 | [diff] [blame] | 57 | size_t* bitsPerComponent, |
| 58 | CGBitmapInfo* info, |
| 59 | bool* upscaleTo32) { |
| 60 | if (upscaleTo32) { |
| 61 | *upscaleTo32 = false; |
| 62 | } |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 63 | |
commit-bot@chromium.org | e24ad23 | 2014-02-16 22:03:38 +0000 | [diff] [blame] | 64 | switch (bm.colorType()) { |
| 65 | case kRGB_565_SkColorType: |
| 66 | #if 0 |
| 67 | // doesn't see quite right. Are they thinking 1555? |
| 68 | *bitsPerComponent = 5; |
| 69 | *info = kCGBitmapByteOrder16Little | kCGImageAlphaNone; |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 70 | #else |
reed@google.com | 9c16bc0 | 2011-06-28 21:52:34 +0000 | [diff] [blame] | 71 | if (upscaleTo32) { |
| 72 | *upscaleTo32 = true; |
| 73 | } |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 74 | // now treat like RGBA |
reed@android.com | 758b129 | 2008-12-18 17:54:12 +0000 | [diff] [blame] | 75 | *bitsPerComponent = 8; |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 76 | *info = ComputeCGAlphaInfo_RGBA(kOpaque_SkAlphaType); |
reed@android.com | 8ede492 | 2009-06-22 20:04:33 +0000 | [diff] [blame] | 77 | #endif |
reed@android.com | 758b129 | 2008-12-18 17:54:12 +0000 | [diff] [blame] | 78 | break; |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 79 | case kRGBA_8888_SkColorType: |
| 80 | *bitsPerComponent = 8; |
| 81 | *info = ComputeCGAlphaInfo_RGBA(bm.alphaType()); |
| 82 | break; |
| 83 | case kBGRA_8888_SkColorType: |
| 84 | *bitsPerComponent = 8; |
| 85 | *info = ComputeCGAlphaInfo_BGRA(bm.alphaType()); |
| 86 | break; |
commit-bot@chromium.org | e24ad23 | 2014-02-16 22:03:38 +0000 | [diff] [blame] | 87 | case kARGB_4444_SkColorType: |
reed@android.com | 0680d6c | 2008-12-19 19:46:15 +0000 | [diff] [blame] | 88 | *bitsPerComponent = 4; |
scroggo@google.com | 426648e | 2012-11-12 16:18:43 +0000 | [diff] [blame] | 89 | *info = kCGBitmapByteOrder16Little; |
| 90 | if (bm.isOpaque()) { |
| 91 | *info |= kCGImageAlphaNoneSkipLast; |
| 92 | } else { |
| 93 | *info |= kCGImageAlphaPremultipliedLast; |
| 94 | } |
reed@android.com | 0680d6c | 2008-12-19 19:46:15 +0000 | [diff] [blame] | 95 | break; |
reed@android.com | 758b129 | 2008-12-18 17:54:12 +0000 | [diff] [blame] | 96 | default: |
reed@google.com | 9c16bc0 | 2011-06-28 21:52:34 +0000 | [diff] [blame] | 97 | return false; |
| 98 | } |
| 99 | return true; |
| 100 | } |
| 101 | |
| 102 | static SkBitmap* prepareForImageRef(const SkBitmap& bm, |
| 103 | size_t* bitsPerComponent, |
| 104 | CGBitmapInfo* info) { |
| 105 | bool upscaleTo32; |
| 106 | if (!getBitmapInfo(bm, bitsPerComponent, info, &upscaleTo32)) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 107 | return nullptr; |
reed@android.com | 758b129 | 2008-12-18 17:54:12 +0000 | [diff] [blame] | 108 | } |
| 109 | |
reed@android.com | 32a4249 | 2009-07-10 03:33:52 +0000 | [diff] [blame] | 110 | SkBitmap* copy; |
| 111 | if (upscaleTo32) { |
| 112 | copy = new SkBitmap; |
Matt Sarett | 68b8e3d | 2017-04-28 11:15:22 -0400 | [diff] [blame] | 113 | // here we make a deep copy of the pixels, since CG won't take our |
reed@android.com | 32a4249 | 2009-07-10 03:33:52 +0000 | [diff] [blame] | 114 | // 565 directly |
Matt Sarett | 68b8e3d | 2017-04-28 11:15:22 -0400 | [diff] [blame] | 115 | copy->allocPixels(bm.info().makeColorType(kN32_SkColorType)); |
| 116 | bm.readPixels(copy->info(), copy->getPixels(), copy->rowBytes(), 0, 0); |
reed@android.com | 32a4249 | 2009-07-10 03:33:52 +0000 | [diff] [blame] | 117 | } else { |
| 118 | copy = new SkBitmap(bm); |
| 119 | } |
| 120 | return copy; |
reed@android.com | 758b129 | 2008-12-18 17:54:12 +0000 | [diff] [blame] | 121 | } |
| 122 | |
reed@android.com | 38669c1 | 2011-01-03 13:48:50 +0000 | [diff] [blame] | 123 | CGImageRef SkCreateCGImageRefWithColorspace(const SkBitmap& bm, |
| 124 | CGColorSpaceRef colorSpace) { |
| 125 | size_t bitsPerComponent SK_INIT_TO_AVOID_WARNING; |
| 126 | CGBitmapInfo info SK_INIT_TO_AVOID_WARNING; |
reed@android.com | 758b129 | 2008-12-18 17:54:12 +0000 | [diff] [blame] | 127 | |
| 128 | SkBitmap* bitmap = prepareForImageRef(bm, &bitsPerComponent, &info); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 129 | if (nullptr == bitmap) { |
| 130 | return nullptr; |
reed@android.com | 758b129 | 2008-12-18 17:54:12 +0000 | [diff] [blame] | 131 | } |
| 132 | |
| 133 | const int w = bitmap->width(); |
| 134 | const int h = bitmap->height(); |
Jim Van Verth | 809cbed | 2017-09-27 22:13:44 +0000 | [diff] [blame^] | 135 | const size_t s = bitmap->getSize(); |
reed@android.com | 758b129 | 2008-12-18 17:54:12 +0000 | [diff] [blame] | 136 | |
reed@android.com | 758b129 | 2008-12-18 17:54:12 +0000 | [diff] [blame] | 137 | // our provider "owns" the bitmap*, and will take care of deleting it |
reed@android.com | 2b26cac | 2008-12-22 02:33:11 +0000 | [diff] [blame] | 138 | CGDataProviderRef dataRef = CGDataProviderCreateWithData(bitmap, bitmap->getPixels(), s, |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 139 | SkBitmap_ReleaseInfo); |
reed@android.com | 2b26cac | 2008-12-22 02:33:11 +0000 | [diff] [blame] | 140 | |
reed@android.com | 38669c1 | 2011-01-03 13:48:50 +0000 | [diff] [blame] | 141 | bool releaseColorSpace = false; |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 142 | if (nullptr == colorSpace) { |
reed@google.com | c280d11 | 2011-01-05 16:07:35 +0000 | [diff] [blame] | 143 | colorSpace = CGColorSpaceCreateDeviceRGB(); |
reed@android.com | 38669c1 | 2011-01-03 13:48:50 +0000 | [diff] [blame] | 144 | releaseColorSpace = true; |
| 145 | } |
| 146 | |
reed@android.com | 758b129 | 2008-12-18 17:54:12 +0000 | [diff] [blame] | 147 | CGImageRef ref = CGImageCreate(w, h, bitsPerComponent, |
| 148 | bitmap->bytesPerPixel() * 8, |
reed@android.com | 38669c1 | 2011-01-03 13:48:50 +0000 | [diff] [blame] | 149 | bitmap->rowBytes(), colorSpace, info, dataRef, |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 150 | nullptr, false, kCGRenderingIntentDefault); |
reed@android.com | 38669c1 | 2011-01-03 13:48:50 +0000 | [diff] [blame] | 151 | |
| 152 | if (releaseColorSpace) { |
| 153 | CGColorSpaceRelease(colorSpace); |
| 154 | } |
reed@android.com | 758b129 | 2008-12-18 17:54:12 +0000 | [diff] [blame] | 155 | CGDataProviderRelease(dataRef); |
| 156 | return ref; |
| 157 | } |
| 158 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 159 | void SkCGDrawBitmap(CGContextRef cg, const SkBitmap& bm, float x, float y) { |
| 160 | CGImageRef img = SkCreateCGImageRef(bm); |
| 161 | |
| 162 | if (img) { |
| 163 | CGRect r = CGRectMake(0, 0, bm.width(), bm.height()); |
reed@google.com | 62f4659 | 2011-01-05 15:49:43 +0000 | [diff] [blame] | 164 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 165 | CGContextSaveGState(cg); |
| 166 | CGContextTranslateCTM(cg, x, r.size.height + y); |
| 167 | CGContextScaleCTM(cg, 1, -1); |
reed@google.com | 62f4659 | 2011-01-05 15:49:43 +0000 | [diff] [blame] | 168 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 169 | CGContextDrawImage(cg, r, img); |
reed@google.com | 62f4659 | 2011-01-05 15:49:43 +0000 | [diff] [blame] | 170 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 171 | CGContextRestoreGState(cg); |
reed@google.com | 62f4659 | 2011-01-05 15:49:43 +0000 | [diff] [blame] | 172 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 173 | CGImageRelease(img); |
| 174 | } |
| 175 | } |
| 176 | |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 177 | /////////////////////////////////////////////////////////////////////////////////////////////////// |
| 178 | |
Mike Reed | 356f7c2 | 2017-01-10 11:58:39 -0500 | [diff] [blame] | 179 | CGContextRef SkCreateCGContext(const SkPixmap& pmap) { |
| 180 | CGBitmapInfo cg_bitmap_info = 0; |
| 181 | size_t bitsPerComponent = 0; |
| 182 | switch (pmap.colorType()) { |
| 183 | case kRGBA_8888_SkColorType: |
| 184 | bitsPerComponent = 8; |
| 185 | cg_bitmap_info = ComputeCGAlphaInfo_RGBA(pmap.alphaType()); |
| 186 | break; |
| 187 | case kBGRA_8888_SkColorType: |
| 188 | bitsPerComponent = 8; |
| 189 | cg_bitmap_info = ComputeCGAlphaInfo_BGRA(pmap.alphaType()); |
| 190 | break; |
| 191 | default: |
| 192 | return nullptr; // no other colortypes are supported (for now) |
| 193 | } |
| 194 | |
| 195 | size_t rb = pmap.addr() ? pmap.rowBytes() : 0; |
| 196 | CGColorSpaceRef cs = CGColorSpaceCreateDeviceRGB(); |
| 197 | CGContextRef cg = CGBitmapContextCreate(pmap.writable_addr(), pmap.width(), pmap.height(), |
| 198 | bitsPerComponent, rb, cs, cg_bitmap_info); |
| 199 | CFRelease(cs); |
| 200 | return cg; |
| 201 | } |
| 202 | |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 203 | SK_API bool SkCopyPixelsFromCGImage(const SkImageInfo& info, size_t rowBytes, void* pixels, |
| 204 | CGImageRef image) { |
| 205 | CGBitmapInfo cg_bitmap_info = 0; |
| 206 | size_t bitsPerComponent = 0; |
| 207 | switch (info.colorType()) { |
| 208 | case kRGBA_8888_SkColorType: |
| 209 | bitsPerComponent = 8; |
| 210 | cg_bitmap_info = ComputeCGAlphaInfo_RGBA(info.alphaType()); |
| 211 | break; |
| 212 | case kBGRA_8888_SkColorType: |
| 213 | bitsPerComponent = 8; |
| 214 | cg_bitmap_info = ComputeCGAlphaInfo_BGRA(info.alphaType()); |
| 215 | break; |
| 216 | default: |
| 217 | return false; // no other colortypes are supported (for now) |
| 218 | } |
| 219 | |
| 220 | CGColorSpaceRef cs = CGColorSpaceCreateDeviceRGB(); |
| 221 | CGContextRef cg = CGBitmapContextCreate(pixels, info.width(), info.height(), bitsPerComponent, |
| 222 | rowBytes, cs, cg_bitmap_info); |
| 223 | CFRelease(cs); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 224 | if (nullptr == cg) { |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 225 | return false; |
| 226 | } |
| 227 | |
| 228 | // use this blend mode, to avoid having to erase the pixels first, and to avoid CG performing |
| 229 | // any blending (which could introduce errors and be slower). |
| 230 | CGContextSetBlendMode(cg, kCGBlendModeCopy); |
| 231 | |
| 232 | CGContextDrawImage(cg, CGRectMake(0, 0, info.width(), info.height()), image); |
| 233 | CGContextRelease(cg); |
| 234 | return true; |
| 235 | } |
| 236 | |
Mike Reed | 463c848 | 2016-12-21 12:01:12 -0500 | [diff] [blame] | 237 | bool SkCreateBitmapFromCGImage(SkBitmap* dst, CGImageRef image) { |
| 238 | const int width = SkToInt(CGImageGetWidth(image)); |
| 239 | const int height = SkToInt(CGImageGetHeight(image)); |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 240 | SkImageInfo info = SkImageInfo::MakeN32Premul(width, height); |
| 241 | |
| 242 | SkBitmap tmp; |
reed | 8482504 | 2014-09-02 12:50:45 -0700 | [diff] [blame] | 243 | if (!tmp.tryAllocPixels(info)) { |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 244 | return false; |
| 245 | } |
| 246 | |
| 247 | if (!SkCopyPixelsFromCGImage(tmp.info(), tmp.rowBytes(), tmp.getPixels(), image)) { |
| 248 | return false; |
| 249 | } |
| 250 | |
| 251 | CGImageAlphaInfo cgInfo = CGImageGetAlphaInfo(image); |
| 252 | switch (cgInfo) { |
| 253 | case kCGImageAlphaNone: |
| 254 | case kCGImageAlphaNoneSkipLast: |
| 255 | case kCGImageAlphaNoneSkipFirst: |
| 256 | SkASSERT(SkBitmap::ComputeIsOpaque(tmp)); |
| 257 | tmp.setAlphaType(kOpaque_SkAlphaType); |
| 258 | break; |
| 259 | default: |
| 260 | // we don't know if we're opaque or not, so compute it. |
| 261 | if (SkBitmap::ComputeIsOpaque(tmp)) { |
| 262 | tmp.setAlphaType(kOpaque_SkAlphaType); |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | *dst = tmp; |
| 267 | return true; |
| 268 | } |
mtklein | 1ee7651 | 2015-11-02 10:20:27 -0800 | [diff] [blame] | 269 | |
Mike Reed | 463c848 | 2016-12-21 12:01:12 -0500 | [diff] [blame] | 270 | sk_sp<SkImage> SkMakeImageFromCGImage(CGImageRef src) { |
| 271 | SkBitmap bm; |
| 272 | if (!SkCreateBitmapFromCGImage(&bm, src)) { |
| 273 | return nullptr; |
| 274 | } |
| 275 | |
| 276 | bm.setImmutable(); |
| 277 | return SkImage::MakeFromBitmap(bm); |
| 278 | } |
| 279 | |
mtklein | 1ee7651 | 2015-11-02 10:20:27 -0800 | [diff] [blame] | 280 | #endif//defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS) |