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comparison: gfx/skia/trunk/src/utils/ios/SkImageDecoder_iOS.mm
gfx/skia/trunk/src/utils/ios/SkImageDecoder_iOS.mm
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:5d3631c9d1b1 |
|---|---|
| 1 /* | |
| 2 * Copyright 2010 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 #import <CoreGraphics/CoreGraphics.h> | |
| 9 #include <CoreGraphics/CGColorSpace.h> | |
| 10 #import <UIKit/UIKit.h> | |
| 11 | |
| 12 #include "SkImageDecoder.h" | |
| 13 #include "SkImageEncoder.h" | |
| 14 #include "SkMovie.h" | |
| 15 #include "SkStream_NSData.h" | |
| 16 | |
| 17 class SkImageDecoder_iOS : public SkImageDecoder { | |
| 18 protected: | |
| 19 virtual bool onDecode(SkStream* stream, SkBitmap* bm, Mode); | |
| 20 }; | |
| 21 | |
| 22 #define BITMAP_INFO (kCGBitmapByteOrder32Big | kCGImageAlphaPremultipliedLast) | |
| 23 | |
| 24 bool SkImageDecoder_iOS::onDecode(SkStream* stream, SkBitmap* bm, Mode mode) { | |
| 25 | |
| 26 NSData* data = NSData_dataWithStream(stream); | |
| 27 | |
| 28 UIImage* uimage = [UIImage imageWithData:data]; | |
| 29 | |
| 30 const int width = uimage.size.width; | |
| 31 const int height = uimage.size.height; | |
| 32 bm->setConfig(SkBitmap::kARGB_8888_Config, width, height); | |
| 33 if (SkImageDecoder::kDecodeBounds_Mode == mode) { | |
| 34 return true; | |
| 35 } | |
| 36 | |
| 37 if (!this->allocPixelRef(bm, NULL)) { | |
| 38 return false; | |
| 39 } | |
| 40 | |
| 41 bm->lockPixels(); | |
| 42 bm->eraseColor(0); | |
| 43 | |
| 44 CGColorSpaceRef cs = CGColorSpaceCreateDeviceRGB(); | |
| 45 CGContextRef cg = CGBitmapContextCreate(bm->getPixels(), width, height, | |
| 46 8, bm->rowBytes(), cs, BITMAP_INFO); | |
| 47 CGContextDrawImage(cg, CGRectMake(0, 0, width, height), uimage.CGImage); | |
| 48 CGContextRelease(cg); | |
| 49 CGColorSpaceRelease(cs); | |
| 50 | |
| 51 bm->unlockPixels(); | |
| 52 return true; | |
| 53 } | |
| 54 | |
| 55 ///////////////////////////////////////////////////////////////////////// | |
| 56 | |
| 57 SkImageDecoder* SkImageDecoder::Factory(SkStreamRewindable* stream) { | |
| 58 return new SkImageDecoder_iOS; | |
| 59 } | |
| 60 | |
| 61 SkMovie* SkMovie::DecodeStream(SkStreamRewindable* stream) { | |
| 62 return NULL; | |
| 63 } | |
| 64 | |
| 65 SkImageEncoder* SkImageEncoder::Create(Type t) { | |
| 66 return NULL; | |
| 67 } | |
| 68 |
