1 // Copyright 2013 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 "cc/resources/ui_resource_bitmap.h" 6 7 #include "base/logging.h" 8 #include "base/memory/scoped_ptr.h" 9 #include "third_party/skia/include/core/SkBitmap.h" 10 #include "third_party/skia/include/core/SkMallocPixelRef.h" 11 #include "third_party/skia/include/core/SkPixelRef.h" 12 13 namespace cc { 14 15 void UIResourceBitmap::Create(const skia::RefPtr<SkPixelRef>& pixel_ref, 16 const gfx::Size& size, 17 UIResourceFormat format) { 18 DCHECK(size.width()); 19 DCHECK(size.height()); 20 DCHECK(pixel_ref); 21 DCHECK(pixel_ref->isImmutable()); 22 format_ = format; 23 size_ = size; 24 pixel_ref_ = pixel_ref; 25 26 // Default values for secondary parameters. 27 wrap_mode_ = CLAMP_TO_EDGE; 28 opaque_ = (format == ETC1); 29 } 30 31 UIResourceBitmap::UIResourceBitmap(const SkBitmap& skbitmap) { 32 DCHECK_EQ(skbitmap.colorType(), kPMColor_SkColorType); 33 DCHECK_EQ(skbitmap.width(), skbitmap.rowBytesAsPixels()); 34 DCHECK(skbitmap.isImmutable()); 35 36 skia::RefPtr<SkPixelRef> pixel_ref = skia::SharePtr(skbitmap.pixelRef()); 37 const SkImageInfo& info = pixel_ref->info(); 38 Create( 39 pixel_ref, gfx::Size(info.fWidth, info.fHeight), UIResourceBitmap::RGBA8); 40 41 SetOpaque(skbitmap.isOpaque()); 42 } 43 44 UIResourceBitmap::UIResourceBitmap(const gfx::Size& size, bool is_opaque) { 45 SkAlphaType alphaType = is_opaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType; 46 SkImageInfo info = 47 SkImageInfo::MakeN32(size.width(), size.height(), alphaType); 48 skia::RefPtr<SkPixelRef> pixel_ref = skia::AdoptRef( 49 SkMallocPixelRef::NewAllocate(info, info.minRowBytes(), NULL)); 50 pixel_ref->setImmutable(); 51 Create(pixel_ref, size, UIResourceBitmap::RGBA8); 52 SetOpaque(is_opaque); 53 } 54 55 UIResourceBitmap::UIResourceBitmap(const skia::RefPtr<SkPixelRef>& pixel_ref, 56 const gfx::Size& size) { 57 Create(pixel_ref, size, UIResourceBitmap::ETC1); 58 } 59 60 UIResourceBitmap::~UIResourceBitmap() {} 61 62 AutoLockUIResourceBitmap::AutoLockUIResourceBitmap( 63 const UIResourceBitmap& bitmap) : bitmap_(bitmap) { 64 bitmap_.pixel_ref_->lockPixels(); 65 } 66 67 AutoLockUIResourceBitmap::~AutoLockUIResourceBitmap() { 68 bitmap_.pixel_ref_->unlockPixels(); 69 } 70 71 const uint8_t* AutoLockUIResourceBitmap::GetPixels() const { 72 return static_cast<const uint8_t*>(bitmap_.pixel_ref_->pixels()); 73 } 74 75 } // namespace cc 76
