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// Copyright (c) 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.
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_RTC_STATS_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_RTC_STATS_H_
#include "base/callback.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/platform/web_vector.h"
#include "third_party/blink/renderer/platform/peerconnection/rtc_stats.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "third_party/webrtc/api/scoped_refptr.h"
#include "third_party/webrtc/api/stats/rtc_stats.h"
#include "third_party/webrtc/api/stats/rtc_stats_collector_callback.h"
#include "third_party/webrtc/api/stats/rtc_stats_report.h"
namespace base {
class SingleThreadTaskRunner;
}
namespace webrtc {
class RTCStatsCollectorCallback;
enum class NonStandardGroupId;
} // namespace webrtc
namespace blink {
class RTCStats;
class RTCStatsMember;
// Wrapper around a webrtc::RTCStatsReport. Filters out any stats objects that
// aren't listed in the allow list. |filter| controls whether to include only
// standard members (RTCStatsMemberInterface::is_standardized return true) or
// not (RTCStatsMemberInterface::is_standardized return false).
//
// Note: This class is named |RTCStatsReportPlatform| not to collide with class
// |RTCStatsReport|, from renderer/modules/peerconnection/rtc_stats_report.cc|h.
class PLATFORM_EXPORT RTCStatsReportPlatform {
public:
RTCStatsReportPlatform(
const scoped_refptr<const webrtc::RTCStatsReport>& stats_report,
const Vector<webrtc::NonStandardGroupId>& exposed_group_ids);
virtual ~RTCStatsReportPlatform();
// Creates a new report object that is a handle to the same underlying stats
// report (the stats are not copied). The new report's iterator is reset,
// useful when needing multiple iterators.
std::unique_ptr<RTCStatsReportPlatform> CopyHandle() const;
// Gets stats object by |id|, or null if no stats with that |id| exists.
std::unique_ptr<RTCStats> GetStats(const String& id) const;
// The next stats object, or null if the end has been reached.
std::unique_ptr<RTCStats> Next();
// The number of stats objects.
size_t Size() const;
private:
const scoped_refptr<const webrtc::RTCStatsReport> stats_report_;
webrtc::RTCStatsReport::ConstIterator it_;
const webrtc::RTCStatsReport::ConstIterator end_;
Vector<webrtc::NonStandardGroupId> exposed_group_ids_;
// Number of allowlisted webrtc::RTCStats in |stats_report_|.
const size_t size_;
};
class PLATFORM_EXPORT RTCStats {
public:
RTCStats(const scoped_refptr<const webrtc::RTCStatsReport>& stats_owner,
const webrtc::RTCStats* stats,
const Vector<webrtc::NonStandardGroupId>& exposed_group_ids);
virtual ~RTCStats();
String Id() const;
String GetType() const;
double Timestamp() const;
size_t MembersCount() const;
std::unique_ptr<RTCStatsMember> GetMember(size_t i) const;
private:
// Reference to keep the report that owns |stats_| alive.
const scoped_refptr<const webrtc::RTCStatsReport> stats_owner_;
// Pointer to a stats object that is owned by |stats_owner_|.
const webrtc::RTCStats* const stats_;
// Members of the |stats_| object, equivalent to |stats_->Members()|.
const std::vector<const webrtc::RTCStatsMemberInterface*> stats_members_;
};
class PLATFORM_EXPORT RTCStatsMember {
public:
RTCStatsMember(const scoped_refptr<const webrtc::RTCStatsReport>& stats_owner,
const webrtc::RTCStatsMemberInterface* member);
virtual ~RTCStatsMember();
String GetName() const;
webrtc::RTCStatsMemberInterface::Type GetType() const;
bool IsDefined() const;
bool ValueBool() const;
int32_t ValueInt32() const;
uint32_t ValueUint32() const;
int64_t ValueInt64() const;
uint64_t ValueUint64() const;
double ValueDouble() const;
String ValueString() const;
Vector<bool> ValueSequenceBool() const;
Vector<int32_t> ValueSequenceInt32() const;
Vector<uint32_t> ValueSequenceUint32() const;
Vector<int64_t> ValueSequenceInt64() const;
Vector<uint64_t> ValueSequenceUint64() const;
Vector<double> ValueSequenceDouble() const;
Vector<String> ValueSequenceString() const;
private:
// Reference to keep the report that owns |member_|'s stats object alive.
const scoped_refptr<const webrtc::RTCStatsReport> stats_owner_;
// Pointer to member of a stats object that is owned by |stats_owner_|.
const webrtc::RTCStatsMemberInterface* const member_;
};
using RTCStatsReportCallback =
base::OnceCallback<void(std::unique_ptr<RTCStatsReportPlatform>)>;
PLATFORM_EXPORT
rtc::scoped_refptr<webrtc::RTCStatsCollectorCallback>
CreateRTCStatsCollectorCallback(
scoped_refptr<base::SingleThreadTaskRunner> main_thread,
RTCStatsReportCallback callback,
const Vector<webrtc::NonStandardGroupId>& exposed_group_ids);
// A stats collector callback.
// It is invoked on the WebRTC signaling thread and will post a task to invoke
// |callback| on the thread given in the |main_thread| argument.
// The argument to the callback will be a |RTCStatsReportPlatform|.
class PLATFORM_EXPORT RTCStatsCollectorCallbackImpl
: public webrtc::RTCStatsCollectorCallback {
public:
void OnStatsDelivered(
const rtc::scoped_refptr<const webrtc::RTCStatsReport>& report) override;
protected:
RTCStatsCollectorCallbackImpl(
scoped_refptr<base::SingleThreadTaskRunner> main_thread,
RTCStatsReportCallback callback,
const Vector<webrtc::NonStandardGroupId>& exposed_group_ids);
~RTCStatsCollectorCallbackImpl() override;
void OnStatsDeliveredOnMainThread(
rtc::scoped_refptr<const webrtc::RTCStatsReport> report);
const scoped_refptr<base::SingleThreadTaskRunner> main_thread_;
RTCStatsReportCallback callback_;
Vector<webrtc::NonStandardGroupId> exposed_group_ids_;
};
PLATFORM_EXPORT void AllowStatsForTesting(const char* type);
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_RTC_STATS_H_
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