Repo created

TMessagesProj/jni/voip/webrtc/api/adaptation/BUILD.gn

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+# Copyright(c) 2020 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.
+
+import("../../webrtc.gni")
+
+rtc_source_set("resource_adaptation_api") {
+  visibility = [ "*" ]
+  sources = [
+    "resource.cc",
+    "resource.h",
+  ]
+  deps = [
+    "../../api:scoped_refptr",
+    "../../rtc_base:checks",
+    "../../rtc_base:refcount",
+    "../../rtc_base/system:rtc_export",
+  ]
+}

TMessagesProj/jni/voip/webrtc/api/adaptation/DEPS

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+specific_include_rules = {
+  "resource\.h": [
+    # ref_count.h is a public_deps of rtc_base:refcount. Necessary because of
+    # rtc::RefCountInterface.
+    "+rtc_base/ref_count.h",
+  ],
+}

TMessagesProj/jni/voip/webrtc/api/adaptation/resource.cc

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+/*
+ *  Copyright 2019 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.
+ */
+
+#include "api/adaptation/resource.h"
+
+#include "rtc_base/checks.h"
+
+namespace webrtc {
+
+const char* ResourceUsageStateToString(ResourceUsageState usage_state) {
+  switch (usage_state) {
+    case ResourceUsageState::kOveruse:
+      return "kOveruse";
+    case ResourceUsageState::kUnderuse:
+      return "kUnderuse";
+  }
+  RTC_CHECK_NOTREACHED();
+}
+
+ResourceListener::~ResourceListener() {}
+
+Resource::Resource() {}
+
+Resource::~Resource() {}
+
+}  // namespace webrtc

TMessagesProj/jni/voip/webrtc/api/adaptation/resource.h

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+/*
+ *  Copyright 2019 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_ADAPTATION_RESOURCE_H_
+#define API_ADAPTATION_RESOURCE_H_
+
+#include <string>
+
+#include "api/scoped_refptr.h"
+#include "rtc_base/ref_count.h"
+#include "rtc_base/system/rtc_export.h"
+
+namespace webrtc {
+
+class Resource;
+
+enum class ResourceUsageState {
+  // Action is needed to minimze the load on this resource.
+  kOveruse,
+  // Increasing the load on this resource is desired, if possible.
+  kUnderuse,
+};
+
+RTC_EXPORT const char* ResourceUsageStateToString(
+    ResourceUsageState usage_state);
+
+class RTC_EXPORT ResourceListener {
+ public:
+  virtual ~ResourceListener();
+
+  virtual void OnResourceUsageStateMeasured(
+      rtc::scoped_refptr<Resource> resource,
+      ResourceUsageState usage_state) = 0;
+};
+
+// A Resource monitors an implementation-specific resource. It may report
+// kOveruse or kUnderuse when resource usage is high or low enough that we
+// should perform some sort of mitigation to fulfil the resource's constraints.
+//
+// The methods on this interface are invoked on the adaptation task queue.
+// Resource usage measurements may be performed on an any task queue.
+//
+// The Resource is reference counted to prevent use-after-free when posting
+// between task queues. As such, the implementation MUST NOT make any
+// assumptions about which task queue Resource is destructed on.
+class RTC_EXPORT Resource : public rtc::RefCountInterface {
+ public:
+  Resource();
+  // Destruction may happen on any task queue.
+  ~Resource() override;
+
+  virtual std::string Name() const = 0;
+  // The `listener` may be informed of resource usage measurements on any task
+  // queue, but not after this method is invoked with the null argument.
+  virtual void SetResourceListener(ResourceListener* listener) = 0;
+};
+
+}  // namespace webrtc
+
+#endif  // API_ADAPTATION_RESOURCE_H_