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Diffstat (limited to '')
| -rw-r--r-- | third_party/libwebrtc/api/stats/rtc_stats_member.h | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/third_party/libwebrtc/api/stats/rtc_stats_member.h b/third_party/libwebrtc/api/stats/rtc_stats_member.h new file mode 100644 index 0000000000..9039569ede --- /dev/null +++ b/third_party/libwebrtc/api/stats/rtc_stats_member.h @@ -0,0 +1,185 @@ +/* + * Copyright 2023 The WebRTC Project Authors. All rights reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#ifndef API_STATS_RTC_STATS_MEMBER_H_ +#define API_STATS_RTC_STATS_MEMBER_H_ + +#include <map> +#include <string> +#include <utility> +#include <vector> + +#include "absl/types/optional.h" +#include "rtc_base/checks.h" +#include "rtc_base/system/rtc_export.h" +#include "rtc_base/system/rtc_export_template.h" + +namespace webrtc { + +// Interface for `RTCStats` members, which have a name and a value of a type +// defined in a subclass. Only the types listed in `Type` are supported, these +// are implemented by `RTCStatsMember<T>`. The value of a member may be +// undefined, the value can only be read if `is_defined`. +class RTCStatsMemberInterface { + public: + // Member value types. + enum Type { + kBool, // bool + kInt32, // int32_t + kUint32, // uint32_t + kInt64, // int64_t + kUint64, // uint64_t + kDouble, // double + kString, // std::string + + kSequenceBool, // std::vector<bool> + kSequenceInt32, // std::vector<int32_t> + kSequenceUint32, // std::vector<uint32_t> + kSequenceInt64, // std::vector<int64_t> + kSequenceUint64, // std::vector<uint64_t> + kSequenceDouble, // std::vector<double> + kSequenceString, // std::vector<std::string> + + kMapStringUint64, // std::map<std::string, uint64_t> + kMapStringDouble, // std::map<std::string, double> + }; + + virtual ~RTCStatsMemberInterface() {} + + virtual Type type() const = 0; + virtual bool is_sequence() const = 0; + virtual bool is_string() const = 0; + virtual bool has_value() const = 0; + // Type and value comparator. The names are not compared. These operators are + // exposed for testing. + bool operator==(const RTCStatsMemberInterface& other) const { + return IsEqual(other); + } + bool operator!=(const RTCStatsMemberInterface& other) const { + return !(*this == other); + } + + virtual const RTCStatsMemberInterface* member_ptr() const { return this; } + template <typename T> + const T& cast_to() const { + RTC_DCHECK_EQ(type(), T::StaticType()); + return static_cast<const T&>(*member_ptr()); + } + + protected: + virtual bool IsEqual(const RTCStatsMemberInterface& other) const = 0; +}; + +// Template implementation of `RTCStatsMemberInterface`. +// The supported types are the ones described by +// `RTCStatsMemberInterface::Type`. +template <typename T> +class RTCStatsMember : public RTCStatsMemberInterface { + public: + RTCStatsMember() {} + explicit RTCStatsMember(const T& value) : value_(value) {} + + static Type StaticType(); + Type type() const override { return StaticType(); } + bool is_sequence() const override; + bool is_string() const override; + + template <typename U> + inline T value_or(U default_value) const { + return value_.value_or(default_value); + } + // TODO(https://crbug.com/webrtc/15164): Migrate to value_or() and delete. + template <typename U> + inline T ValueOrDefault(U default_value) const { + return value_or(default_value); + } + + // Assignment operators. + T& operator=(const T& value) { + value_ = value; + return value_.value(); + } + T& operator=(const T&& value) { + value_ = std::move(value); + return value_.value(); + } + + // Getter methods that look the same as absl::optional<T>. Please prefer these + // in order to unblock replacing RTCStatsMember<T> with absl::optional<T> in + // the future (https://crbug.com/webrtc/15164). + bool has_value() const override { return value_.has_value(); } + const T& value() const { return value_.value(); } + T& value() { return value_.value(); } + T& operator*() { + RTC_DCHECK(value_); + return *value_; + } + const T& operator*() const { + RTC_DCHECK(value_); + return *value_; + } + T* operator->() { + RTC_DCHECK(value_); + return &(*value_); + } + const T* operator->() const { + RTC_DCHECK(value_); + return &(*value_); + } + + bool IsEqual(const RTCStatsMemberInterface& other) const override { + if (type() != other.type()) + return false; + const RTCStatsMember<T>& other_t = + static_cast<const RTCStatsMember<T>&>(other); + return value_ == other_t.value_; + } + + private: + absl::optional<T> value_; +}; + +namespace rtc_stats_internal { + +typedef std::map<std::string, uint64_t> MapStringUint64; +typedef std::map<std::string, double> MapStringDouble; + +} // namespace rtc_stats_internal + +#define WEBRTC_DECLARE_RTCSTATSMEMBER(T) \ + template <> \ + RTC_EXPORT RTCStatsMemberInterface::Type RTCStatsMember<T>::StaticType(); \ + template <> \ + RTC_EXPORT bool RTCStatsMember<T>::is_sequence() const; \ + template <> \ + RTC_EXPORT bool RTCStatsMember<T>::is_string() const; \ + extern template class RTC_EXPORT_TEMPLATE_DECLARE(RTC_EXPORT) \ + RTCStatsMember<T> + +WEBRTC_DECLARE_RTCSTATSMEMBER(bool); +WEBRTC_DECLARE_RTCSTATSMEMBER(int32_t); +WEBRTC_DECLARE_RTCSTATSMEMBER(uint32_t); +WEBRTC_DECLARE_RTCSTATSMEMBER(int64_t); +WEBRTC_DECLARE_RTCSTATSMEMBER(uint64_t); +WEBRTC_DECLARE_RTCSTATSMEMBER(double); +WEBRTC_DECLARE_RTCSTATSMEMBER(std::string); +WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<bool>); +WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<int32_t>); +WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<uint32_t>); +WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<int64_t>); +WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<uint64_t>); +WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<double>); +WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<std::string>); +WEBRTC_DECLARE_RTCSTATSMEMBER(rtc_stats_internal::MapStringUint64); +WEBRTC_DECLARE_RTCSTATSMEMBER(rtc_stats_internal::MapStringDouble); + +} // namespace webrtc + +#endif // API_STATS_RTC_STATS_MEMBER_H_ |