| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "components/user_manager/user_image/user_image.h" |
| |
| #include "base/debug/trace_event.h" |
| #include "third_party/skia/include/core/SkBitmap.h" |
| #include "ui/gfx/codec/jpeg_codec.h" |
| |
| namespace user_manager { |
| |
| namespace { |
| |
| // Default quality for encoding user images. |
| const int kDefaultEncodingQuality = 90; |
| |
| bool IsAnimatedImage(const UserImage::RawImage& data) { |
| const char kGIFStamp[] = "GIF"; |
| const size_t kGIFStampLength = sizeof(kGIFStamp) - 1; |
| |
| if (data.size() >= kGIFStampLength && |
| memcmp(&data[0], kGIFStamp, kGIFStampLength) == 0) { |
| return true; |
| } |
| return false; |
| } |
| |
| bool EncodeImageSkia(const gfx::ImageSkia& image, |
| std::vector<unsigned char>* output) { |
| TRACE_EVENT2("oobe", "EncodeImageSkia", |
| "width", image.width(), "height", image.height()); |
| if (image.isNull()) |
| return false; |
| const SkBitmap& bitmap = *image.bitmap(); |
| SkAutoLockPixels lock_image(bitmap); |
| return gfx::JPEGCodec::Encode( |
| reinterpret_cast<unsigned char*>(bitmap.getAddr32(0, 0)), |
| gfx::JPEGCodec::FORMAT_SkBitmap, |
| bitmap.width(), |
| bitmap.height(), |
| bitmap.width() * bitmap.bytesPerPixel(), |
| kDefaultEncodingQuality, output); |
| } |
| |
| } // namespace |
| |
| // static |
| UserImage UserImage::CreateAndEncode(const gfx::ImageSkia& image) { |
| RawImage raw_image; |
| if (EncodeImageSkia(image, &raw_image)) { |
| UserImage result(image, raw_image); |
| result.MarkAsSafe(); |
| return result; |
| } |
| return UserImage(image); |
| } |
| |
| UserImage::UserImage() |
| : has_raw_image_(false), |
| has_animated_image_(false), |
| is_safe_format_(false) { |
| } |
| |
| UserImage::UserImage(const gfx::ImageSkia& image) |
| : image_(image), |
| has_raw_image_(false), |
| has_animated_image_(false), |
| is_safe_format_(false) { |
| } |
| |
| UserImage::UserImage(const gfx::ImageSkia& image, |
| const RawImage& raw_image) |
| : image_(image), |
| has_raw_image_(false), |
| has_animated_image_(false), |
| is_safe_format_(false) { |
| if (IsAnimatedImage(raw_image)) { |
| has_animated_image_ = true; |
| animated_image_ = raw_image; |
| if (EncodeImageSkia(image_, &raw_image_)) { |
| has_raw_image_ = true; |
| MarkAsSafe(); |
| } |
| } else { |
| has_raw_image_ = true; |
| raw_image_ = raw_image; |
| } |
| } |
| |
| UserImage::~UserImage() {} |
| |
| void UserImage::DiscardRawImage() { |
| RawImage().swap(raw_image_); // Clear |raw_image_|. |
| } |
| |
| void UserImage::MarkAsSafe() { |
| is_safe_format_ = true; |
| } |
| |
| } // namespace user_manager |