mirror of
https://bitbucket.org/chromiumembedded/cef
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94 lines
2.9 KiB
C++
94 lines
2.9 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "libcef/renderer/plugins/plugin_preroller.h"
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#include "libcef/renderer/plugins/cef_plugin_placeholder.h"
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#include "base/base64.h"
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#include "chrome/grit/generated_resources.h"
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#include "chrome/renderer/plugins/power_saver_info.h"
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#include "third_party/WebKit/public/platform/WebRect.h"
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#include "third_party/WebKit/public/web/WebElement.h"
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#include "third_party/WebKit/public/web/WebPlugin.h"
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#include "third_party/WebKit/public/web/WebPluginContainer.h"
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#include "ui/gfx/codec/png_codec.h"
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CefPluginPreroller::CefPluginPreroller(
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content::RenderFrame* render_frame,
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blink::WebLocalFrame* frame,
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const blink::WebPluginParams& params,
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const content::WebPluginInfo& info,
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const std::string& identifier,
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const base::string16& name,
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const base::string16& message,
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content::PluginInstanceThrottler* throttler)
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: RenderFrameObserver(render_frame),
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frame_(frame),
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params_(params),
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info_(info),
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identifier_(identifier),
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name_(name),
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message_(message),
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throttler_(throttler) {
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DCHECK(throttler);
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throttler_->AddObserver(this);
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}
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CefPluginPreroller::~CefPluginPreroller() {
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if (throttler_)
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throttler_->RemoveObserver(this);
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}
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void CefPluginPreroller::OnKeyframeExtracted(const SkBitmap* bitmap) {
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std::vector<unsigned char> png_data;
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if (!gfx::PNGCodec::EncodeBGRASkBitmap(*bitmap, false, &png_data)) {
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DLOG(ERROR) << "Provided keyframe could not be encoded as PNG.";
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return;
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}
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base::StringPiece png_as_string(reinterpret_cast<char*>(&png_data[0]),
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png_data.size());
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std::string data_url_header = "data:image/png;base64,";
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std::string data_url_body;
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base::Base64Encode(png_as_string, &data_url_body);
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keyframe_data_url_ = GURL(data_url_header + data_url_body);
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}
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void CefPluginPreroller::OnThrottleStateChange() {
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if (!throttler_->IsThrottled())
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return;
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PowerSaverInfo power_saver_info;
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power_saver_info.power_saver_enabled = true;
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power_saver_info.poster_attribute = keyframe_data_url_.spec();
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power_saver_info.custom_poster_size = throttler_->GetSize();
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CefPluginPlaceholder* placeholder =
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CefPluginPlaceholder::CreateBlockedPlugin(
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render_frame(), frame_, params_, info_, identifier_, name_,
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IDR_PLUGIN_POSTER_HTML, message_, power_saver_info);
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placeholder->SetPremadePlugin(throttler_);
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placeholder->set_power_saver_enabled(true);
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placeholder->AllowLoading();
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blink::WebPluginContainer* container =
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throttler_->GetWebPlugin()->container();
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container->setPlugin(placeholder->plugin());
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bool success = placeholder->plugin()->initialize(container);
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DCHECK(success);
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container->invalidate();
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container->reportGeometry();
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delete this;
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}
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void CefPluginPreroller::OnThrottlerDestroyed() {
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throttler_ = nullptr;
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delete this;
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}
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