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// Copyright 2016 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 "modules/notifications/NotificationImageLoader.h"
#include "core/dom/ExecutionContext.h"
#include "core/fetch/ResourceLoaderOptions.h"
#include "platform/Histogram.h"
#include "platform/image-decoders/ImageDecoder.h"
#include "platform/image-decoders/ImageFrame.h"
#include "platform/network/ResourceError.h"
#include "platform/network/ResourceLoadPriority.h"
#include "platform/network/ResourceRequest.h"
#include "platform/weborigin/KURL.h"
#include "public/platform/WebURLRequest.h"
#include "public/platform/modules/notifications/WebNotificationConstants.h"
#include "skia/ext/image_operations.h"
#include "wtf/CurrentTime.h"
#include "wtf/Threading.h"
#include <memory>
#define NOTIFICATION_PER_TYPE_HISTOGRAM_COUNTS(metric, type_name, value, max) \
case NotificationImageLoader::Type::type_name: { \
DEFINE_THREAD_SAFE_STATIC_LOCAL( \
CustomCountHistogram, metric##type_name##Histogram, \
new CustomCountHistogram("Notifications." #metric "." #type_name, \
1 /* min */, max, 50 /* buckets */)); \
metric##type_name##Histogram.count(value); \
break; \
}
#define NOTIFICATION_HISTOGRAM_COUNTS(metric, type, value, max) \
switch (type) { \
NOTIFICATION_PER_TYPE_HISTOGRAM_COUNTS(metric, Image, value, max) \
NOTIFICATION_PER_TYPE_HISTOGRAM_COUNTS(metric, Icon, value, max) \
NOTIFICATION_PER_TYPE_HISTOGRAM_COUNTS(metric, Badge, value, max) \
NOTIFICATION_PER_TYPE_HISTOGRAM_COUNTS(metric, ActionIcon, value, max) \
}
namespace {
// 99.9% of all images were fetched successfully in 90 seconds.
const unsigned long kImageFetchTimeoutInMs = 90000;
} // namespace
namespace blink {
NotificationImageLoader::NotificationImageLoader(Type type)
: m_type(type), m_stopped(false), m_startTime(0.0) {}
NotificationImageLoader::~NotificationImageLoader() {}
// static
SkBitmap NotificationImageLoader::scaleDownIfNeeded(const SkBitmap& image,
Type type) {
int maxWidthPx = 0, maxHeightPx = 0;
switch (type) {
case Type::Image:
maxWidthPx = kWebNotificationMaxImageWidthPx;
maxHeightPx = kWebNotificationMaxImageHeightPx;
break;
case Type::Icon:
maxWidthPx = kWebNotificationMaxIconSizePx;
maxHeightPx = kWebNotificationMaxIconSizePx;
break;
case Type::Badge:
maxWidthPx = kWebNotificationMaxBadgeSizePx;
maxHeightPx = kWebNotificationMaxBadgeSizePx;
break;
case Type::ActionIcon:
maxWidthPx = kWebNotificationMaxActionIconSizePx;
maxHeightPx = kWebNotificationMaxActionIconSizePx;
break;
}
DCHECK_GT(maxWidthPx, 0);
DCHECK_GT(maxHeightPx, 0);
// TODO(peter): Explore doing the scaling on a background thread.
if (image.width() > maxWidthPx || image.height() > maxHeightPx) {
double scale = std::min(static_cast<double>(maxWidthPx) / image.width(),
static_cast<double>(maxHeightPx) / image.height());
double startTime = monotonicallyIncreasingTimeMS();
// TODO(peter): Try using RESIZE_BETTER for large images.
SkBitmap scaledImage =
skia::ImageOperations::Resize(image, skia::ImageOperations::RESIZE_BEST,
std::lround(scale * image.width()),
std::lround(scale * image.height()));
NOTIFICATION_HISTOGRAM_COUNTS(LoadScaleDownTime, type,
monotonicallyIncreasingTimeMS() - startTime,
1000 * 10 /* 10 seconds max */);
return scaledImage;
}
return image;
}
void NotificationImageLoader::start(
ExecutionContext* executionContext,
const KURL& url,
std::unique_ptr<ImageCallback> imageCallback) {
DCHECK(!m_stopped);
m_startTime = monotonicallyIncreasingTimeMS();
m_imageCallback = std::move(imageCallback);
ThreadableLoaderOptions threadableLoaderOptions;
threadableLoaderOptions.preflightPolicy = PreventPreflight;
threadableLoaderOptions.crossOriginRequestPolicy = AllowCrossOriginRequests;
threadableLoaderOptions.timeoutMilliseconds = kImageFetchTimeoutInMs;
// TODO(mvanouwerkerk): Add an entry for notifications to
// FetchInitiatorTypeNames and use it.
ResourceLoaderOptions resourceLoaderOptions;
resourceLoaderOptions.allowCredentials = AllowStoredCredentials;
if (executionContext->isWorkerGlobalScope())
resourceLoaderOptions.requestInitiatorContext = WorkerContext;
ResourceRequest resourceRequest(url);
resourceRequest.setRequestContext(WebURLRequest::RequestContextImage);
resourceRequest.setPriority(ResourceLoadPriorityMedium);
resourceRequest.setRequestorOrigin(executionContext->getSecurityOrigin());
// TODO(yhirano): Remove this CHECK once https://crbug.com/667254 is fixed.
CHECK(!m_threadableLoader);
m_threadableLoader = ThreadableLoader::create(
*executionContext, this, threadableLoaderOptions, resourceLoaderOptions,
ThreadableLoader::ClientSpec::kNotificationImageLoader);
m_threadableLoader->start(resourceRequest);
}
void NotificationImageLoader::stop() {
if (m_stopped)
return;
m_stopped = true;
if (m_threadableLoader) {
m_threadableLoader->cancel();
m_threadableLoader = nullptr;
}
}
void NotificationImageLoader::didReceiveData(const char* data,
unsigned length) {
if (!m_data)
m_data = SharedBuffer::create();
m_data->append(data, length);
}
void NotificationImageLoader::didFinishLoading(unsigned long resourceIdentifier,
double finishTime) {
// If this has been stopped it is not desirable to trigger further work,
// there is a shutdown of some sort in progress.
if (m_stopped)
return;
NOTIFICATION_HISTOGRAM_COUNTS(LoadFinishTime, m_type,
monotonicallyIncreasingTimeMS() - m_startTime,
1000 * 60 * 60 /* 1 hour max */);
if (m_data) {
NOTIFICATION_HISTOGRAM_COUNTS(LoadFileSize, m_type, m_data->size(),
10000000 /* ~10mb max */);
std::unique_ptr<ImageDecoder> decoder = ImageDecoder::create(
m_data, true /* dataComplete */, ImageDecoder::AlphaPremultiplied,
ColorBehavior::transformToGlobalTarget());
if (decoder) {
// The |ImageFrame*| is owned by the decoder.
ImageFrame* imageFrame = decoder->frameBufferAtIndex(0);
if (imageFrame) {
(*m_imageCallback)(imageFrame->bitmap());
return;
}
}
}
runCallbackWithEmptyBitmap();
}
void NotificationImageLoader::didFail(const ResourceError& error) {
NOTIFICATION_HISTOGRAM_COUNTS(LoadFailTime, m_type,
monotonicallyIncreasingTimeMS() - m_startTime,
1000 * 60 * 60 /* 1 hour max */);
runCallbackWithEmptyBitmap();
}
void NotificationImageLoader::didFailRedirectCheck() {
runCallbackWithEmptyBitmap();
}
void NotificationImageLoader::runCallbackWithEmptyBitmap() {
// If this has been stopped it is not desirable to trigger further work,
// there is a shutdown of some sort in progress.
if (m_stopped)
return;
(*m_imageCallback)(SkBitmap());
}
} // namespace blink
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