1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "ui/gfx/image/image_util.h" 6 7 #include "base/memory/scoped_ptr.h" 8 #include "third_party/skia/include/core/SkBitmap.h" 9 #include "ui/gfx/codec/jpeg_codec.h" 10 #include "ui/gfx/image/image.h" 11 #include "ui/gfx/image/image_skia.h" 12 13 namespace gfx { 14 15 // The iOS implementations of the JPEG functions are in image_util_ios.mm. 16 #if !defined(OS_IOS) 17 Image ImageFrom1xJPEGEncodedData(const unsigned char* input, 18 size_t input_size) { 19 scoped_ptr<SkBitmap> bitmap(gfx::JPEGCodec::Decode(input, input_size)); 20 if (bitmap.get()) 21 return Image::CreateFrom1xBitmap(*bitmap); 22 23 return Image(); 24 } 25 26 bool JPEG1xEncodedDataFromImage(const Image& image, int quality, 27 std::vector<unsigned char>* dst) { 28 const gfx::ImageSkiaRep& image_skia_rep = 29 image.AsImageSkia().GetRepresentation(1.0f); 30 if (image_skia_rep.scale() != 1.0f) 31 return false; 32 33 const SkBitmap& bitmap = image_skia_rep.sk_bitmap(); 34 SkAutoLockPixels bitmap_lock(bitmap); 35 36 if (!bitmap.readyToDraw()) 37 return false; 38 39 return gfx::JPEGCodec::Encode( 40 reinterpret_cast<unsigned char*>(bitmap.getAddr32(0, 0)), 41 gfx::JPEGCodec::FORMAT_SkBitmap, bitmap.width(), 42 bitmap.height(), 43 static_cast<int>(bitmap.rowBytes()), quality, 44 dst); 45 } 46 #endif // !defined(OS_IOS) 47 48 } 49
