/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

include GraphicsMessages;
include MemoryReportTypes;
include PrefsTypes;

include protocol PProfiler;
include protocol PRemoteDecoderManager;
include protocol PVideoBridge;

#if defined(MOZ_SANDBOX) && defined(MOZ_DEBUG) && defined(ENABLE_TESTS)
include protocol PSandboxTesting;
#endif

include "mozilla/ipc/ByteBufUtils.h";

using mozilla::dom::ContentParentId from "mozilla/dom/ipc/IdType.h";
using mozilla::dom::NativeThreadId from "mozilla/dom/NativeThreadId.h";
using mozilla::media::MediaCodecsSupported from "MediaCodecsSupport.h";

// Telemetry
using mozilla::Telemetry::HistogramAccumulation from "mozilla/TelemetryComms.h";
using mozilla::Telemetry::KeyedHistogramAccumulation from "mozilla/TelemetryComms.h";
using mozilla::Telemetry::ScalarAction from "mozilla/TelemetryComms.h";
using mozilla::Telemetry::KeyedScalarAction from "mozilla/TelemetryComms.h";
using mozilla::Telemetry::ChildEventData from "mozilla/TelemetryComms.h";
using mozilla::Telemetry::DiscardedData from "mozilla/TelemetryComms.h";

#if defined(XP_WIN)
[MoveOnly] using mozilla::UntrustedModulesData from "mozilla/UntrustedModulesData.h";
[MoveOnly] using mozilla::ModulePaths from "mozilla/UntrustedModulesData.h";
[MoveOnly] using mozilla::ModulesMapResult from "mozilla/UntrustedModulesData.h";
#endif  // defined(XP_WIN)

namespace mozilla {

// This protocol allows the UI process to talk to the RDD
// (RemoteDataDecoder) process. There is one instance of this protocol,
// with the RDDParent living on the main thread of the RDD process and
// the RDDChild living on the main thread of the UI process.
[NeedsOtherPid]
protocol PRDD
{
parent:

  async Init(GfxVarUpdate[] vars, FileDescriptor? sandboxBroker,
             bool canRecordReleaseTelemetry,
             bool aIsReadyForBackgroundProcessing);

  async InitProfiler(Endpoint<PProfilerChild> endpoint);

  async NewContentRemoteDecoderManager(
            Endpoint<PRemoteDecoderManagerParent> endpoint, ContentParentId childId);

  async RequestMemoryReport(uint32_t generation,
                            bool anonymize,
                            bool minimizeMemoryUsage,
                            FileDescriptor? DMDFile)
      returns (uint32_t aGeneration);

  async PreferenceUpdate(Pref pref);

  async UpdateVar(GfxVarUpdate var);

  async InitVideoBridge(Endpoint<PVideoBridgeChild> endpoint,
                        bool createHardwareDevice,
                        ContentDeviceData contentDeviceData);

#if defined(XP_WIN)
  async GetUntrustedModulesData() returns (UntrustedModulesData? data);

  /**
  * This method is used to notifty a child process to start
  * processing module loading events in UntrustedModulesProcessor.
  * This should be called when the parent process has gone idle.
  */
  async UnblockUntrustedModulesThread();
#endif  // defined(XP_WIN)

#if defined(MOZ_SANDBOX) && defined(MOZ_DEBUG) && defined(ENABLE_TESTS)
  async InitSandboxTesting(Endpoint<PSandboxTestingChild> aEndpoint);
#endif

  // Tells the RDD process to flush any pending telemetry.
  // Used in tests and ping assembly. Buffer contains bincoded Rust structs.
  // https://firefox-source-docs.mozilla.org/toolkit/components/glean/dev/ipc.html
  async FlushFOGData() returns (ByteBuf buf);

  // Test-only method.
  // Asks the RDD process to trigger test-only instrumentation.
  // The unused returned value is to have a promise we can await.
  async TestTriggerMetrics() returns (bool unused);

  async TestTelemetryProbes();

child:

  async InitCrashReporter(NativeThreadId threadId);

  async AddMemoryReport(MemoryReport aReport);

#if defined(XP_WIN)
  async GetModulesTrust(ModulePaths aModPaths, bool aRunAtNormalPriority)
      returns (ModulesMapResult? modMapResult);
#endif  // defined(XP_WIN)

  // Update the cached list of codec supported following a check in the
  // RDD parent.
  async UpdateMediaCodecsSupported(MediaCodecsSupported aSupported);

  // Messages for sending telemetry to parent process.
  async AccumulateChildHistograms(HistogramAccumulation[] accumulations);
  async AccumulateChildKeyedHistograms(KeyedHistogramAccumulation[] accumulations);
  async UpdateChildScalars(ScalarAction[] actions);
  async UpdateChildKeyedScalars(KeyedScalarAction[] actions);
  async RecordChildEvents(ChildEventData[] events);
  async RecordDiscardedData(DiscardedData data);

  // Sent from time-to-time to limit the amount of telemetry vulnerable to loss
  // Buffer contains bincoded Rust structs.
  // https://firefox-source-docs.mozilla.org/toolkit/components/glean/dev/ipc.html
  async FOGData(ByteBuf buf);
};

} // namespace mozilla