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// 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/memory/ptr_util.h"
#include "base/trace_event/trace_event.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/codec/jpeg_codec.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/gfx/geometry/size.h"
namespace user_manager {
namespace {
// Default quality for encoding user images.
const int kDefaultEncodingQuality = 90;
} // namespace
// static
scoped_refptr<base::RefCountedBytes> UserImage::Encode(
const SkBitmap& bitmap,
ImageFormat image_format) {
TRACE_EVENT2("oobe", "UserImage::Encode",
"width", bitmap.width(), "height", bitmap.height());
SkAutoLockPixels lock_bitmap(bitmap);
std::vector<unsigned char> output;
auto* bitmap_data = reinterpret_cast<unsigned char*>(bitmap.getAddr32(0, 0));
if (image_format == FORMAT_JPEG) {
if (gfx::JPEGCodec::Encode(
bitmap_data,
gfx::JPEGCodec::FORMAT_SkBitmap,
bitmap.width(),
bitmap.height(),
bitmap.width() * bitmap.bytesPerPixel(),
kDefaultEncodingQuality, &output)) {
return base::RefCountedBytes::TakeVector(&output);
}
} else if (image_format == FORMAT_PNG) {
if (gfx::PNGCodec::Encode(
bitmap_data,
gfx::PNGCodec::FORMAT_SkBitmap,
gfx::Size(bitmap.width(), bitmap.height()),
bitmap.width() * bitmap.bytesPerPixel(),
false, // discard_transparency
std::vector<gfx::PNGCodec::Comment>(), &output)) {
return base::RefCountedBytes::TakeVector(&output);
}
} else {
LOG(FATAL) << "Invalid image format: " << image_format;
}
return nullptr;
}
// static
std::unique_ptr<UserImage> UserImage::CreateAndEncode(
const gfx::ImageSkia& image,
ImageFormat image_format) {
if (image.isNull())
return base::WrapUnique(new UserImage);
scoped_refptr<base::RefCountedBytes> image_bytes = Encode(*image.bitmap(),
image_format);
if (image_bytes) {
std::unique_ptr<UserImage> result(
new UserImage(image, image_bytes, image_format));
result->MarkAsSafe();
return result;
}
return base::WrapUnique(new UserImage(image));
}
// static
UserImage::ImageFormat UserImage::ChooseImageFormat(const SkBitmap& bitmap) {
return SkBitmap::ComputeIsOpaque(bitmap) ? FORMAT_JPEG : FORMAT_PNG;
}
UserImage::UserImage() {
}
UserImage::UserImage(const gfx::ImageSkia& image)
: image_(image) {
}
UserImage::UserImage(const gfx::ImageSkia& image,
scoped_refptr<base::RefCountedBytes> image_bytes,
ImageFormat image_format)
: image_(image),
image_bytes_(image_bytes),
image_format_(image_format) {
}
UserImage::~UserImage() {}
void UserImage::MarkAsSafe() {
is_safe_format_ = true;
}
} // namespace user_manager
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