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// Copyright 2015 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 "chrome/renderer/plugins/plugin_preroller.h"
#include "base/base64.h"
#include "chrome/grit/renderer_resources.h"
#include "chrome/renderer/plugins/chrome_plugin_placeholder.h"
#include "chrome/renderer/plugins/power_saver_info.h"
#include "third_party/blink/public/platform/web_rect.h"
#include "third_party/blink/public/web/web_element.h"
#include "third_party/blink/public/web/web_plugin.h"
#include "third_party/blink/public/web/web_plugin_container.h"
#include "ui/gfx/codec/png_codec.h"
PluginPreroller::PluginPreroller(content::RenderFrame* render_frame,
const blink::WebPluginParams& params,
const content::WebPluginInfo& info,
const std::string& identifier,
const base::string16& name,
const base::string16& message,
content::PluginInstanceThrottler* throttler)
: RenderFrameObserver(render_frame),
params_(params),
info_(info),
identifier_(identifier),
name_(name),
message_(message),
throttler_(throttler) {
DCHECK(throttler);
throttler_->AddObserver(this);
}
PluginPreroller::~PluginPreroller() {
if (throttler_)
throttler_->RemoveObserver(this);
}
void PluginPreroller::OnKeyframeExtracted(const SkBitmap* bitmap) {
std::vector<unsigned char> png_data;
if (!gfx::PNGCodec::EncodeBGRASkBitmap(*bitmap, false, &png_data)) {
DLOG(ERROR) << "Provided keyframe could not be encoded as PNG.";
return;
}
base::StringPiece png_as_string(reinterpret_cast<char*>(&png_data[0]),
png_data.size());
std::string data_url_header = "data:image/png;base64,";
std::string data_url_body;
base::Base64Encode(png_as_string, &data_url_body);
keyframe_data_url_ = GURL(data_url_header + data_url_body);
}
void PluginPreroller::OnThrottleStateChange() {
if (!throttler_->IsThrottled())
return;
PowerSaverInfo power_saver_info;
power_saver_info.power_saver_enabled = true;
power_saver_info.poster_attribute = keyframe_data_url_.spec();
power_saver_info.custom_poster_size = throttler_->GetSize();
ChromePluginPlaceholder* placeholder =
ChromePluginPlaceholder::CreateBlockedPlugin(
render_frame(), params_, info_, identifier_, name_,
IDR_PLUGIN_POSTER_HTML, message_, power_saver_info);
placeholder->SetPremadePlugin(throttler_);
placeholder->AllowLoading();
blink::WebPluginContainer* container =
throttler_->GetWebPlugin()->Container();
container->SetPlugin(placeholder->plugin());
bool success = placeholder->plugin()->Initialize(container);
DCHECK(success);
container->Invalidate();
container->ReportGeometry();
delete this;
}
void PluginPreroller::OnThrottlerDestroyed() {
throttler_ = nullptr;
delete this;
}
void PluginPreroller::OnDestruct() {
delete this;
}
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