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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/platform/peerconnection/rtc_stats.h"
#include <cstddef>
#include <memory>
#include <set>
#include <string>
#include "base/check_op.h"
#include "base/containers/contains.h"
#include "base/numerics/safe_conversions.h"
#include "base/task/single_thread_task_runner.h"
#include "base/time/time.h"
#include "third_party/blink/public/common/features.h"
#include "third_party/blink/renderer/platform/peerconnection/rtc_scoped_refptr_cross_thread_copier.h"
#include "third_party/blink/renderer/platform/scheduler/public/post_cross_thread_task.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_functional.h"
#include "third_party/blink/renderer/platform/wtf/text/string_hash.h"
#include "third_party/webrtc/api/stats/rtc_stats.h"
#include "third_party/webrtc/api/stats/rtcstats_objects.h"
#include "third_party/webrtc/rtc_base/ref_counted_object.h"
namespace blink {
RTCStatsReportPlatform::RTCStatsReportPlatform(
const scoped_refptr<const webrtc::RTCStatsReport>& stats_report)
: stats_report_(stats_report),
it_(stats_report_->begin()),
end_(stats_report_->end()) {
DCHECK(stats_report_);
}
RTCStatsReportPlatform::~RTCStatsReportPlatform() {}
std::unique_ptr<RTCStatsReportPlatform> RTCStatsReportPlatform::CopyHandle()
const {
return std::make_unique<RTCStatsReportPlatform>(stats_report_);
}
const webrtc::RTCStats* RTCStatsReportPlatform::NextStats() {
while (it_ != end_) {
const webrtc::RTCStats& stat = *it_;
++it_;
return &stat;
}
return nullptr;
}
size_t RTCStatsReportPlatform::Size() const {
return stats_report_->size();
}
webrtc::scoped_refptr<webrtc::RTCStatsCollectorCallback>
CreateRTCStatsCollectorCallback(
scoped_refptr<base::SingleThreadTaskRunner> main_thread,
RTCStatsReportCallback callback) {
return webrtc::scoped_refptr<RTCStatsCollectorCallbackImpl>(
new webrtc::RefCountedObject<RTCStatsCollectorCallbackImpl>(
std::move(main_thread), std::move(callback)));
}
RTCStatsCollectorCallbackImpl::RTCStatsCollectorCallbackImpl(
scoped_refptr<base::SingleThreadTaskRunner> main_thread,
RTCStatsReportCallback callback)
: main_thread_(std::move(main_thread)), callback_(std::move(callback)) {}
RTCStatsCollectorCallbackImpl::~RTCStatsCollectorCallbackImpl() {
DCHECK(!callback_);
}
void RTCStatsCollectorCallbackImpl::OnStatsDelivered(
const webrtc::scoped_refptr<const webrtc::RTCStatsReport>& report) {
PostCrossThreadTask(
*main_thread_.get(), FROM_HERE,
CrossThreadBindOnce(
&RTCStatsCollectorCallbackImpl::OnStatsDeliveredOnMainThread,
webrtc::scoped_refptr<RTCStatsCollectorCallbackImpl>(this), report));
}
void RTCStatsCollectorCallbackImpl::OnStatsDeliveredOnMainThread(
webrtc::scoped_refptr<const webrtc::RTCStatsReport> report) {
DCHECK(main_thread_->BelongsToCurrentThread());
DCHECK(report);
DCHECK(callback_);
// Make sure the callback is destroyed in the main thread as well.
std::move(callback_).Run(std::make_unique<RTCStatsReportPlatform>(
base::WrapRefCounted(report.get())));
}
} // namespace blink
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