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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 PVideoDecoderManager;
include LayersSurfaces;
using VideoInfo from "MediaInfo.h";
using mozilla::layers::LayersBackend from "mozilla/layers/LayersTypes.h";
using struct mozilla::layers::TextureFactoryIdentifier from "mozilla/layers/CompositorTypes.h";
namespace mozilla {
namespace dom {
struct MediaDataIPDL
{
int64_t offset;
int64_t time;
int64_t timecode;
int64_t duration;
uint32_t frames;
bool keyframe;
};
struct VideoDataIPDL
{
MediaDataIPDL base;
IntSize display;
SurfaceDescriptorGPUVideo sd;
int32_t frameID;
};
struct MediaRawDataIPDL
{
MediaDataIPDL base;
Shmem buffer;
};
// This protocol provides a way to use MediaDataDecoder/MediaDataDecoderCallback
// across processes. The parent side currently is only implemented to work with
// Window Media Foundation, but can be extended easily to support other backends.
// The child side runs in the content process, and the parent side runs in the
// GPU process. We run a separate IPDL thread for both sides.
async protocol PVideoDecoder
{
manager PVideoDecoderManager;
parent:
async Init(VideoInfo info, TextureFactoryIdentifier identifier);
async Input(MediaRawDataIPDL data);
async Flush();
async Drain();
async Shutdown();
async SetSeekThreshold(int64_t time);
async __delete__();
child:
async InitComplete(bool hardware, nsCString hardwareReason);
async InitFailed(nsresult reason);
// Each output includes 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 Output(VideoDataIPDL data);
async InputExhausted();
async DrainComplete();
async Error(nsresult error);
};
} // namespace dom
} // namespace mozilla
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