Don't preload rarely seen large images
[chromium-blink-merge.git] / components / user_manager / user_image / user_image.cc
blobe9937dab81a81fe636788dbd73658760fd7d992f
1 // Copyright 2014 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.
5 #include "components/user_manager/user_image/user_image.h"
7 #include "base/trace_event/trace_event.h"
8 #include "third_party/skia/include/core/SkBitmap.h"
9 #include "ui/gfx/codec/jpeg_codec.h"
11 namespace user_manager {
13 namespace {
15 // Default quality for encoding user images.
16 const int kDefaultEncodingQuality = 90;
18 bool EncodeImageSkia(const gfx::ImageSkia& image,
19 std::vector<unsigned char>* output) {
20 TRACE_EVENT2("oobe", "EncodeImageSkia",
21 "width", image.width(), "height", image.height());
22 if (image.isNull())
23 return false;
24 const SkBitmap& bitmap = *image.bitmap();
25 SkAutoLockPixels lock_image(bitmap);
26 return gfx::JPEGCodec::Encode(
27 reinterpret_cast<unsigned char*>(bitmap.getAddr32(0, 0)),
28 gfx::JPEGCodec::FORMAT_SkBitmap,
29 bitmap.width(),
30 bitmap.height(),
31 bitmap.width() * bitmap.bytesPerPixel(),
32 kDefaultEncodingQuality, output);
35 } // namespace
37 // static
38 UserImage UserImage::CreateAndEncode(const gfx::ImageSkia& image) {
39 RawImage raw_image;
40 if (EncodeImageSkia(image, &raw_image)) {
41 UserImage result(image, raw_image);
42 result.MarkAsSafe();
43 return result;
45 return UserImage(image);
48 UserImage::UserImage()
49 : has_raw_image_(false),
50 is_safe_format_(false) {
53 UserImage::UserImage(const gfx::ImageSkia& image)
54 : image_(image),
55 has_raw_image_(false),
56 is_safe_format_(false) {
59 UserImage::UserImage(const gfx::ImageSkia& image,
60 const RawImage& raw_image)
61 : image_(image),
62 has_raw_image_(false),
63 is_safe_format_(false) {
64 has_raw_image_ = true;
65 raw_image_ = raw_image;
68 UserImage::~UserImage() {}
70 void UserImage::DiscardRawImage() {
71 RawImage().swap(raw_image_); // Clear |raw_image_|.
74 void UserImage::MarkAsSafe() {
75 is_safe_format_ = true;
78 } // namespace user_manager