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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/public/browser/frame_rate_throttling.h"
#include <vector>
#include "components/viz/common/surfaces/frame_sink_id.h"
#include "components/viz/host/host_frame_sink_manager.h"
#include "content/browser/compositor/surface_utils.h"
#include "content/browser/renderer_host/render_frame_host_impl.h"
#include "content/browser/renderer_host/render_widget_host_impl.h"
#include "content/public/browser/browser_thread.h"
namespace content {
CONTENT_EXPORT void StartThrottlingAllFrameSinks(base::TimeDelta interval) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
GetHostFrameSinkManager()->StartThrottlingAllFrameSinks(interval);
}
CONTENT_EXPORT void StopThrottlingAllFrameSinks() {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
GetHostFrameSinkManager()->StopThrottlingAllFrameSinks();
}
CONTENT_EXPORT void UpdateThrottlingFrameSinks(
const std::set<GlobalRenderFrameHostId>& throttle_frames,
base::TimeDelta interval) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
// viz::HostFrameSinkManager is not available in some unittest.
if (!GetHostFrameSinkManager()) {
return;
}
std::set<viz::FrameSinkId> sink_ids;
for (const GlobalRenderFrameHostId& frame_id : throttle_frames) {
// If frame is deleted, RenderFrameHost no longer exists.
auto* rfh = RenderFrameHostImpl::FromID(frame_id);
// If the RenderFrameHost is a local root, get the RenderWidgetHost
// corresponding to the frame. Otherwise, we get null. We only consider
// the importance of the local root frame to determine RenderWidgetHost's
// frame rate.
auto* rwh = rfh ? rfh->GetLocalRenderWidgetHost() : nullptr;
auto sink_id = rwh ? rwh->GetFrameSinkId() : viz::FrameSinkId();
if (sink_id.is_valid()) {
sink_ids.insert(sink_id);
}
}
std::vector<viz::FrameSinkId> sink_ids_vector(sink_ids.begin(),
sink_ids.end());
GetHostFrameSinkManager()->Throttle(sink_ids_vector, interval);
}
} // namespace content
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