PRemoteDecoder.ipdl

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/* -*- 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 "mozilla/dom/MediaIPCUtils.h";

include protocol PRemoteDecoderManager;

using mozilla::MediaDataDecoder::ConversionRequired from "PlatformDecoderModule.h";

using mozilla::TrackInfo::TrackType from "MediaInfo.h";

using mozilla::layers::LayersBackend from "mozilla/layers/LayersTypes.h";

using mozilla::MediaResult from "MediaResult.h";

[RefCounted] using class mozilla::ArrayOfRemoteMediaRawData from "mozilla/RemoteMediaData.h";

[RefCounted] using class mozilla::ArrayOfRemoteAudioData from "mozilla/RemoteMediaData.h";

[RefCounted] using class mozilla::ArrayOfRemoteVideoData from "mozilla/RemoteMediaData.h";

include PMediaDecoderParams;

include LayersSurfaces;

namespace mozilla {

union DecodedOutputIPDL

  nullable ArrayOfRemoteAudioData;

  nullable ArrayOfRemoteVideoData;

};

struct InitCompletionIPDL

  TrackType type;

  nsCString decoderDescription;

  nsCString decoderProcessName;

  nsCString decoderCodecName;

  bool hardware;

  nsCString hardwareReason;

  ConversionRequired conversion;

};

union InitResultIPDL

  MediaResult;

  InitCompletionIPDL;

};

union DecodeResultIPDL

  MediaResult;

  DecodedOutputIPDL;

};

// This protocol provides a way to use MediaDataDecoder across processes.

// The parent side currently is only implemented to work with

// RemoteDecoderModule or WindowsMediaFoundation.

// The child side runs in the content process, and the parent side runs

// in the RDD process or the GPU process. We run a separate IPDL thread

// for both sides.

[ManualDealloc]

async protocol PRemoteDecoder

  manager PRemoteDecoderManager;

parent:

  async Construct() returns (MediaResult result);

  async Init() returns (InitResultIPDL result);

  // Each output may include a SurfaceDescriptorGPUVideo that represents the decoded

  // frame. This SurfaceDescriptor can be used on the Layers IPDL protocol, but

  // must be released explicitly using DeallocateSurfaceDescriptorGPUVideo

  // on the manager protocol.

  async Decode(nullable ArrayOfRemoteMediaRawData data) returns (DecodeResultIPDL result);

  async Flush() returns (MediaResult error);

  async Drain() returns (DecodeResultIPDL result);

  async Shutdown() returns (bool unused);

  // To clear the threshold, call with INT64_MIN.

  async SetSeekThreshold(TimeUnit time);

  async __delete__();

};

} // namespace mozilla