epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2008 The Android Open Source Project |
| 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 | |
scroggo@google.com | daaea2d | 2013-06-14 20:39:48 +0000 | [diff] [blame] | 8 | #include "SkCGUtils.h" |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 9 | #include "SkColorPriv.h" |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 10 | #include "SkImageDecoder.h" |
reed@android.com | b08eb2b | 2009-01-06 20:16:26 +0000 | [diff] [blame] | 11 | #include "SkImageEncoder.h" |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 12 | #include "SkMovie.h" |
| 13 | #include "SkStream.h" |
halcanary | 67ec1f8 | 2014-06-27 11:36:20 -0700 | [diff] [blame] | 14 | #include "SkStreamPriv.h" |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 15 | #include "SkTemplates.h" |
scroggo@google.com | daaea2d | 2013-06-14 20:39:48 +0000 | [diff] [blame] | 16 | #include "SkUnPreMultiply.h" |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 17 | |
yangsu@google.com | 900d877 | 2011-06-24 18:56:00 +0000 | [diff] [blame] | 18 | #ifdef SK_BUILD_FOR_MAC |
| 19 | #include <ApplicationServices/ApplicationServices.h> |
| 20 | #endif |
| 21 | |
| 22 | #ifdef SK_BUILD_FOR_IOS |
| 23 | #include <CoreGraphics/CoreGraphics.h> |
caryclark@google.com | 35f5ac9 | 2012-09-18 15:41:18 +0000 | [diff] [blame] | 24 | #include <ImageIO/ImageIO.h> |
caryclark@google.com | 594dd3c | 2012-09-24 19:33:57 +0000 | [diff] [blame] | 25 | #include <MobileCoreServices/MobileCoreServices.h> |
yangsu@google.com | 900d877 | 2011-06-24 18:56:00 +0000 | [diff] [blame] | 26 | #endif |
yangsu@google.com | c134f39 | 2011-06-23 22:27:30 +0000 | [diff] [blame] | 27 | |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 28 | static void malloc_release_proc(void* info, const void* data, size_t size) { |
| 29 | sk_free(info); |
| 30 | } |
| 31 | |
| 32 | static CGDataProviderRef SkStreamToDataProvider(SkStream* stream) { |
| 33 | // TODO: use callbacks, so we don't have to load all the data into RAM |
scroggo@google.com | 1a2e71d | 2013-08-28 19:13:13 +0000 | [diff] [blame] | 34 | SkAutoMalloc storage; |
halcanary | 67ec1f8 | 2014-06-27 11:36:20 -0700 | [diff] [blame] | 35 | const size_t len = SkCopyStreamToStorage(&storage, stream); |
scroggo@google.com | 1a2e71d | 2013-08-28 19:13:13 +0000 | [diff] [blame] | 36 | void* data = storage.detach(); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 37 | |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 38 | return CGDataProviderCreateWithData(data, data, len, malloc_release_proc); |
| 39 | } |
| 40 | |
| 41 | static CGImageSourceRef SkStreamToCGImageSource(SkStream* stream) { |
| 42 | CGDataProviderRef data = SkStreamToDataProvider(stream); |
| 43 | CGImageSourceRef imageSrc = CGImageSourceCreateWithDataProvider(data, 0); |
| 44 | CGDataProviderRelease(data); |
| 45 | return imageSrc; |
| 46 | } |
| 47 | |
| 48 | class SkImageDecoder_CG : public SkImageDecoder { |
| 49 | protected: |
reed@android.com | 3f1f06a | 2010-03-03 21:04:12 +0000 | [diff] [blame] | 50 | virtual bool onDecode(SkStream* stream, SkBitmap* bm, Mode); |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 51 | }; |
| 52 | |
reed | 935a9f6 | 2014-06-30 14:06:00 -0700 | [diff] [blame^] | 53 | static void argb_4444_force_opaque(void* row, int count) { |
| 54 | uint16_t* row16 = (uint16_t*)row; |
| 55 | for (int i = 0; i < count; ++i) { |
| 56 | row16[i] |= 0xF000; |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | static void argb_8888_force_opaque(void* row, int count) { |
| 61 | // can use RGBA or BGRA, they have the same shift for alpha |
| 62 | const uint32_t alphaMask = 0xFF << SK_RGBA_A32_SHIFT; |
| 63 | uint32_t* row32 = (uint32_t*)row; |
| 64 | for (int i = 0; i < count; ++i) { |
| 65 | row32[i] |= alphaMask; |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | static void alpha_8_force_opaque(void* row, int count) { |
| 70 | memset(row, 0xFF, count); |
| 71 | } |
| 72 | |
| 73 | static void force_opaque(SkBitmap* bm) { |
| 74 | SkAutoLockPixels alp(*bm); |
| 75 | if (!bm->getPixels()) { |
| 76 | return; |
| 77 | } |
| 78 | |
| 79 | void (*proc)(void*, int); |
| 80 | switch (bm->colorType()) { |
| 81 | case kARGB_4444_SkColorType: |
| 82 | proc = argb_4444_force_opaque; |
| 83 | break; |
| 84 | case kRGBA_8888_SkColorType: |
| 85 | case kBGRA_8888_SkColorType: |
| 86 | proc = argb_8888_force_opaque; |
| 87 | break; |
| 88 | case kAlpha_8_SkColorType: |
| 89 | proc = alpha_8_force_opaque; |
| 90 | break; |
| 91 | default: |
| 92 | return; |
| 93 | } |
| 94 | |
| 95 | char* row = (char*)bm->getPixels(); |
| 96 | for (int y = 0; y < bm->height(); ++y) { |
| 97 | proc(row, bm->width()); |
| 98 | row += bm->rowBytes(); |
| 99 | } |
| 100 | bm->setAlphaType(kOpaque_SkAlphaType); |
| 101 | } |
| 102 | |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 103 | #define BITMAP_INFO (kCGBitmapByteOrder32Big | kCGImageAlphaPremultipliedLast) |
| 104 | |
reed@android.com | 3f1f06a | 2010-03-03 21:04:12 +0000 | [diff] [blame] | 105 | bool SkImageDecoder_CG::onDecode(SkStream* stream, SkBitmap* bm, Mode mode) { |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 106 | CGImageSourceRef imageSrc = SkStreamToCGImageSource(stream); |
| 107 | |
| 108 | if (NULL == imageSrc) { |
| 109 | return false; |
| 110 | } |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 111 | SkAutoTCallVProc<const void, CFRelease> arsrc(imageSrc); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 112 | |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 113 | CGImageRef image = CGImageSourceCreateImageAtIndex(imageSrc, 0, NULL); |
| 114 | if (NULL == image) { |
| 115 | return false; |
| 116 | } |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 117 | SkAutoTCallVProc<CGImage, CGImageRelease> arimage(image); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 118 | |
reed@google.com | 7fa2a65 | 2014-01-27 13:42:58 +0000 | [diff] [blame] | 119 | const int width = SkToInt(CGImageGetWidth(image)); |
| 120 | const int height = SkToInt(CGImageGetHeight(image)); |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 121 | |
reed | 6c22573 | 2014-06-09 19:52:07 -0700 | [diff] [blame] | 122 | bm->setInfo(SkImageInfo::MakeN32Premul(width, height)); |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 123 | if (SkImageDecoder::kDecodeBounds_Mode == mode) { |
| 124 | return true; |
| 125 | } |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 126 | |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 127 | if (!this->allocPixelRef(bm, NULL)) { |
| 128 | return false; |
| 129 | } |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 130 | |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 131 | SkAutoLockPixels alp(*bm); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 132 | |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 133 | if (!SkCopyPixelsFromCGImage(bm->info(), bm->rowBytes(), bm->getPixels(), image)) { |
| 134 | return false; |
| 135 | } |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 136 | |
reed@google.com | 52e91bf | 2012-11-07 22:06:55 +0000 | [diff] [blame] | 137 | CGImageAlphaInfo info = CGImageGetAlphaInfo(image); |
| 138 | switch (info) { |
| 139 | case kCGImageAlphaNone: |
| 140 | case kCGImageAlphaNoneSkipLast: |
| 141 | case kCGImageAlphaNoneSkipFirst: |
reed | 935a9f6 | 2014-06-30 14:06:00 -0700 | [diff] [blame^] | 142 | // We're opaque, but we can't rely on the data always having 0xFF |
| 143 | // in the alpha slot (which Skia wants), so we have to ram it in |
| 144 | // ourselves. |
| 145 | force_opaque(bm); |
reed@google.com | 52e91bf | 2012-11-07 22:06:55 +0000 | [diff] [blame] | 146 | break; |
| 147 | default: |
| 148 | // we don't know if we're opaque or not, so compute it. |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 149 | if (SkBitmap::ComputeIsOpaque(*bm)) { |
| 150 | bm->setAlphaType(kOpaque_SkAlphaType); |
| 151 | } |
reed@google.com | 52e91bf | 2012-11-07 22:06:55 +0000 | [diff] [blame] | 152 | } |
scroggo@google.com | daaea2d | 2013-06-14 20:39:48 +0000 | [diff] [blame] | 153 | if (!bm->isOpaque() && this->getRequireUnpremultipliedColors()) { |
| 154 | // CGBitmapContext does not support unpremultiplied, so the image has been premultiplied. |
| 155 | // Convert to unpremultiplied. |
| 156 | for (int i = 0; i < width; ++i) { |
| 157 | for (int j = 0; j < height; ++j) { |
| 158 | uint32_t* addr = bm->getAddr32(i, j); |
commit-bot@chromium.org | b06faac | 2014-01-15 22:24:58 +0000 | [diff] [blame] | 159 | *addr = SkUnPreMultiply::UnPreMultiplyPreservingByteOrder(*addr); |
scroggo@google.com | daaea2d | 2013-06-14 20:39:48 +0000 | [diff] [blame] | 160 | } |
| 161 | } |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 162 | bm->setAlphaType(kUnpremul_SkAlphaType); |
scroggo@google.com | daaea2d | 2013-06-14 20:39:48 +0000 | [diff] [blame] | 163 | } |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 164 | return true; |
| 165 | } |
| 166 | |
| 167 | /////////////////////////////////////////////////////////////////////////////// |
| 168 | |
scroggo@google.com | b5571b3 | 2013-09-25 21:34:24 +0000 | [diff] [blame] | 169 | extern SkImageDecoder* image_decoder_from_stream(SkStreamRewindable*); |
scroggo@google.com | 4c6adf9 | 2013-04-17 21:07:55 +0000 | [diff] [blame] | 170 | |
scroggo@google.com | b5571b3 | 2013-09-25 21:34:24 +0000 | [diff] [blame] | 171 | SkImageDecoder* SkImageDecoder::Factory(SkStreamRewindable* stream) { |
scroggo@google.com | 4c6adf9 | 2013-04-17 21:07:55 +0000 | [diff] [blame] | 172 | SkImageDecoder* decoder = image_decoder_from_stream(stream); |
| 173 | if (NULL == decoder) { |
| 174 | // If no image decoder specific to the stream exists, use SkImageDecoder_CG. |
| 175 | return SkNEW(SkImageDecoder_CG); |
| 176 | } else { |
| 177 | return decoder; |
| 178 | } |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 179 | } |
| 180 | |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 181 | ///////////////////////////////////////////////////////////////////////// |
| 182 | |
scroggo@google.com | b5571b3 | 2013-09-25 21:34:24 +0000 | [diff] [blame] | 183 | SkMovie* SkMovie::DecodeStream(SkStreamRewindable* stream) { |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 184 | return NULL; |
| 185 | } |
| 186 | |
| 187 | ///////////////////////////////////////////////////////////////////////// |
| 188 | |
reed@android.com | 0ae6b24 | 2008-12-23 16:49:54 +0000 | [diff] [blame] | 189 | static size_t consumer_put(void* info, const void* buffer, size_t count) { |
| 190 | SkWStream* stream = reinterpret_cast<SkWStream*>(info); |
| 191 | return stream->write(buffer, count) ? count : 0; |
| 192 | } |
| 193 | |
| 194 | static void consumer_release(void* info) { |
| 195 | // we do nothing, since by design we don't "own" the stream (i.e. info) |
| 196 | } |
| 197 | |
| 198 | static CGDataConsumerRef SkStreamToCGDataConsumer(SkWStream* stream) { |
| 199 | CGDataConsumerCallbacks procs; |
| 200 | procs.putBytes = consumer_put; |
| 201 | procs.releaseConsumer = consumer_release; |
| 202 | // we don't own/reference the stream, so it our consumer must not live |
| 203 | // longer that our caller's ownership of the stream |
| 204 | return CGDataConsumerCreate(stream, &procs); |
| 205 | } |
| 206 | |
| 207 | static CGImageDestinationRef SkStreamToImageDestination(SkWStream* stream, |
| 208 | CFStringRef type) { |
| 209 | CGDataConsumerRef consumer = SkStreamToCGDataConsumer(stream); |
| 210 | if (NULL == consumer) { |
| 211 | return NULL; |
| 212 | } |
| 213 | SkAutoTCallVProc<const void, CFRelease> arconsumer(consumer); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 214 | |
reed@android.com | 0ae6b24 | 2008-12-23 16:49:54 +0000 | [diff] [blame] | 215 | return CGImageDestinationCreateWithDataConsumer(consumer, type, 1, NULL); |
| 216 | } |
| 217 | |
| 218 | class SkImageEncoder_CG : public SkImageEncoder { |
| 219 | public: |
| 220 | SkImageEncoder_CG(Type t) : fType(t) {} |
| 221 | |
| 222 | protected: |
| 223 | virtual bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 224 | |
reed@android.com | 0ae6b24 | 2008-12-23 16:49:54 +0000 | [diff] [blame] | 225 | private: |
| 226 | Type fType; |
| 227 | }; |
| 228 | |
reed@android.com | 0ae6b24 | 2008-12-23 16:49:54 +0000 | [diff] [blame] | 229 | /* Encode bitmaps via CGImageDestination. We setup a DataConsumer which writes |
| 230 | to our SkWStream. Since we don't reference/own the SkWStream, our consumer |
| 231 | must only live for the duration of the onEncode() method. |
| 232 | */ |
| 233 | bool SkImageEncoder_CG::onEncode(SkWStream* stream, const SkBitmap& bm, |
| 234 | int quality) { |
scroggo@google.com | 5a7c6be | 2012-10-04 21:46:08 +0000 | [diff] [blame] | 235 | // Used for converting a bitmap to 8888. |
| 236 | const SkBitmap* bmPtr = &bm; |
| 237 | SkBitmap bitmap8888; |
| 238 | |
reed@android.com | 0ae6b24 | 2008-12-23 16:49:54 +0000 | [diff] [blame] | 239 | CFStringRef type; |
| 240 | switch (fType) { |
scroggo@google.com | 4c6adf9 | 2013-04-17 21:07:55 +0000 | [diff] [blame] | 241 | case kICO_Type: |
| 242 | type = kUTTypeICO; |
| 243 | break; |
| 244 | case kBMP_Type: |
| 245 | type = kUTTypeBMP; |
| 246 | break; |
| 247 | case kGIF_Type: |
| 248 | type = kUTTypeGIF; |
| 249 | break; |
reed@android.com | 0ae6b24 | 2008-12-23 16:49:54 +0000 | [diff] [blame] | 250 | case kJPEG_Type: |
| 251 | type = kUTTypeJPEG; |
| 252 | break; |
| 253 | case kPNG_Type: |
scroggo@google.com | 5a7c6be | 2012-10-04 21:46:08 +0000 | [diff] [blame] | 254 | // PNG encoding an ARGB_4444 bitmap gives the following errors in GM: |
| 255 | // <Error>: CGImageDestinationAddImage image could not be converted to destination |
| 256 | // format. |
| 257 | // <Error>: CGImageDestinationFinalize image destination does not have enough images |
| 258 | // So instead we copy to 8888. |
commit-bot@chromium.org | 8a2ad3c | 2014-02-23 03:59:35 +0000 | [diff] [blame] | 259 | if (bm.colorType() == kARGB_4444_SkColorType) { |
commit-bot@chromium.org | 28fcae2 | 2014-04-11 17:15:40 +0000 | [diff] [blame] | 260 | bm.copyTo(&bitmap8888, kN32_SkColorType); |
scroggo@google.com | 5a7c6be | 2012-10-04 21:46:08 +0000 | [diff] [blame] | 261 | bmPtr = &bitmap8888; |
| 262 | } |
reed@android.com | 0ae6b24 | 2008-12-23 16:49:54 +0000 | [diff] [blame] | 263 | type = kUTTypePNG; |
| 264 | break; |
| 265 | default: |
| 266 | return false; |
| 267 | } |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 268 | |
reed@android.com | 0ae6b24 | 2008-12-23 16:49:54 +0000 | [diff] [blame] | 269 | CGImageDestinationRef dst = SkStreamToImageDestination(stream, type); |
| 270 | if (NULL == dst) { |
| 271 | return false; |
| 272 | } |
| 273 | SkAutoTCallVProc<const void, CFRelease> ardst(dst); |
| 274 | |
scroggo@google.com | 5a7c6be | 2012-10-04 21:46:08 +0000 | [diff] [blame] | 275 | CGImageRef image = SkCreateCGImageRef(*bmPtr); |
reed@android.com | 0ae6b24 | 2008-12-23 16:49:54 +0000 | [diff] [blame] | 276 | if (NULL == image) { |
| 277 | return false; |
| 278 | } |
| 279 | SkAutoTCallVProc<CGImage, CGImageRelease> agimage(image); |
epoger@google.com | 0928c4a | 2012-01-31 15:14:08 +0000 | [diff] [blame] | 280 | |
| 281 | CGImageDestinationAddImage(dst, image, NULL); |
| 282 | return CGImageDestinationFinalize(dst); |
reed@android.com | 0ae6b24 | 2008-12-23 16:49:54 +0000 | [diff] [blame] | 283 | } |
| 284 | |
scroggo@google.com | 4c6adf9 | 2013-04-17 21:07:55 +0000 | [diff] [blame] | 285 | /////////////////////////////////////////////////////////////////////////////// |
| 286 | |
scroggo@google.com | 4c6adf9 | 2013-04-17 21:07:55 +0000 | [diff] [blame] | 287 | static SkImageEncoder* sk_imageencoder_cg_factory(SkImageEncoder::Type t) { |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 288 | switch (t) { |
scroggo@google.com | 4c6adf9 | 2013-04-17 21:07:55 +0000 | [diff] [blame] | 289 | case SkImageEncoder::kICO_Type: |
| 290 | case SkImageEncoder::kBMP_Type: |
| 291 | case SkImageEncoder::kGIF_Type: |
| 292 | case SkImageEncoder::kJPEG_Type: |
| 293 | case SkImageEncoder::kPNG_Type: |
reed@android.com | 0ae6b24 | 2008-12-23 16:49:54 +0000 | [diff] [blame] | 294 | break; |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 295 | default: |
| 296 | return NULL; |
| 297 | } |
reed@android.com | 0ae6b24 | 2008-12-23 16:49:54 +0000 | [diff] [blame] | 298 | return SkNEW_ARGS(SkImageEncoder_CG, (t)); |
reed@android.com | 0767e47 | 2008-12-23 16:06:51 +0000 | [diff] [blame] | 299 | } |
scroggo@google.com | 4c6adf9 | 2013-04-17 21:07:55 +0000 | [diff] [blame] | 300 | |
scroggo@google.com | b5571b3 | 2013-09-25 21:34:24 +0000 | [diff] [blame] | 301 | static SkImageEncoder_EncodeReg gEReg(sk_imageencoder_cg_factory); |
scroggo@google.com | 39edf4c | 2013-04-25 17:33:51 +0000 | [diff] [blame] | 302 | |
| 303 | struct FormatConversion { |
| 304 | CFStringRef fUTType; |
| 305 | SkImageDecoder::Format fFormat; |
| 306 | }; |
| 307 | |
| 308 | // Array of the types supported by the decoder. |
| 309 | static const FormatConversion gFormatConversions[] = { |
| 310 | { kUTTypeBMP, SkImageDecoder::kBMP_Format }, |
| 311 | { kUTTypeGIF, SkImageDecoder::kGIF_Format }, |
| 312 | { kUTTypeICO, SkImageDecoder::kICO_Format }, |
| 313 | { kUTTypeJPEG, SkImageDecoder::kJPEG_Format }, |
| 314 | // Also include JPEG2000 |
| 315 | { kUTTypeJPEG2000, SkImageDecoder::kJPEG_Format }, |
| 316 | { kUTTypePNG, SkImageDecoder::kPNG_Format }, |
| 317 | }; |
| 318 | |
| 319 | static SkImageDecoder::Format UTType_to_Format(const CFStringRef uttype) { |
| 320 | for (size_t i = 0; i < SK_ARRAY_COUNT(gFormatConversions); i++) { |
| 321 | if (CFStringCompare(uttype, gFormatConversions[i].fUTType, 0) == kCFCompareEqualTo) { |
| 322 | return gFormatConversions[i].fFormat; |
| 323 | } |
| 324 | } |
| 325 | return SkImageDecoder::kUnknown_Format; |
| 326 | } |
| 327 | |
scroggo@google.com | b5571b3 | 2013-09-25 21:34:24 +0000 | [diff] [blame] | 328 | static SkImageDecoder::Format get_format_cg(SkStreamRewindable* stream) { |
scroggo@google.com | 39edf4c | 2013-04-25 17:33:51 +0000 | [diff] [blame] | 329 | CGImageSourceRef imageSrc = SkStreamToCGImageSource(stream); |
| 330 | |
| 331 | if (NULL == imageSrc) { |
| 332 | return SkImageDecoder::kUnknown_Format; |
| 333 | } |
| 334 | |
| 335 | SkAutoTCallVProc<const void, CFRelease> arsrc(imageSrc); |
| 336 | const CFStringRef name = CGImageSourceGetType(imageSrc); |
| 337 | if (NULL == name) { |
| 338 | return SkImageDecoder::kUnknown_Format; |
| 339 | } |
| 340 | return UTType_to_Format(name); |
| 341 | } |
| 342 | |
scroggo@google.com | b5571b3 | 2013-09-25 21:34:24 +0000 | [diff] [blame] | 343 | static SkImageDecoder_FormatReg gFormatReg(get_format_cg); |