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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 "MediaStreamGraph.h"
#include "OutputStreamManager.h"
namespace mozilla {
OutputStreamData::~OutputStreamData()
{
MOZ_ASSERT(NS_IsMainThread());
// Break the connection to the input stream if necessary.
for (RefPtr<MediaInputPort>& port : mPorts) {
port->Destroy();
}
}
void
OutputStreamData::Init(OutputStreamManager* aOwner,
ProcessedMediaStream* aStream,
TrackID aNextAvailableTrackID)
{
mOwner = aOwner;
mStream = aStream;
mNextAvailableTrackID = aNextAvailableTrackID;
}
bool
OutputStreamData::Connect(MediaStream* aStream,
TrackID aInputAudioTrackID,
TrackID aInputVideoTrackID)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mPorts.IsEmpty(), "Already connected?");
if (mStream->IsDestroyed()) {
return false;
}
for (TrackID tid : {aInputAudioTrackID, aInputVideoTrackID}) {
if (tid == TRACK_NONE) {
continue;
}
MOZ_ASSERT(IsTrackIDExplicit(tid));
mPorts.AppendElement(mStream->AllocateInputPort(
aStream, tid, mNextAvailableTrackID++));
}
return true;
}
bool
OutputStreamData::Disconnect()
{
MOZ_ASSERT(NS_IsMainThread());
// During cycle collection, DOMMediaStream can be destroyed and send
// its Destroy message before this decoder is destroyed. So we have to
// be careful not to send any messages after the Destroy().
if (mStream->IsDestroyed()) {
return false;
}
// Disconnect any existing port.
for (RefPtr<MediaInputPort>& port : mPorts) {
port->Destroy();
}
mPorts.Clear();
return true;
}
bool
OutputStreamData::Equals(MediaStream* aStream) const
{
return mStream == aStream;
}
MediaStreamGraph*
OutputStreamData::Graph() const
{
return mStream->Graph();
}
TrackID
OutputStreamData::NextAvailableTrackID() const
{
return mNextAvailableTrackID;
}
void
OutputStreamManager::Add(ProcessedMediaStream* aStream,
TrackID aNextAvailableTrackID,
bool aFinishWhenEnded)
{
MOZ_ASSERT(NS_IsMainThread());
// All streams must belong to the same graph.
MOZ_ASSERT(!Graph() || Graph() == aStream->Graph());
// Ensure that aStream finishes the moment mDecodedStream does.
if (aFinishWhenEnded) {
aStream->SetAutofinish(true);
}
OutputStreamData* p = mStreams.AppendElement();
p->Init(this, aStream, aNextAvailableTrackID);
// Connect to the input stream if we have one. Otherwise the output stream
// will be connected in Connect().
if (mInputStream) {
p->Connect(mInputStream, mInputAudioTrackID, mInputVideoTrackID);
}
}
void
OutputStreamManager::Remove(MediaStream* aStream)
{
MOZ_ASSERT(NS_IsMainThread());
for (int32_t i = mStreams.Length() - 1; i >= 0; --i) {
if (mStreams[i].Equals(aStream)) {
mStreams.RemoveElementAt(i);
break;
}
}
}
void
OutputStreamManager::Clear()
{
MOZ_ASSERT(NS_IsMainThread());
mStreams.Clear();
}
TrackID
OutputStreamManager::NextAvailableTrackIDFor(MediaStream* aOutputStream) const
{
MOZ_ASSERT(NS_IsMainThread());
for (const OutputStreamData& out : mStreams) {
if (out.Equals(aOutputStream)) {
return out.NextAvailableTrackID();
}
}
return TRACK_INVALID;
}
void
OutputStreamManager::Connect(MediaStream* aStream,
TrackID aAudioTrackID,
TrackID aVideoTrackID)
{
MOZ_ASSERT(NS_IsMainThread());
mInputStream = aStream;
mInputAudioTrackID = aAudioTrackID;
mInputVideoTrackID = aVideoTrackID;
for (int32_t i = mStreams.Length() - 1; i >= 0; --i) {
if (!mStreams[i].Connect(aStream, mInputAudioTrackID, mInputVideoTrackID)) {
// Probably the DOMMediaStream was GCed. Clean up.
mStreams.RemoveElementAt(i);
}
}
}
void
OutputStreamManager::Disconnect()
{
MOZ_ASSERT(NS_IsMainThread());
mInputStream = nullptr;
mInputAudioTrackID = TRACK_INVALID;
mInputVideoTrackID = TRACK_INVALID;
for (int32_t i = mStreams.Length() - 1; i >= 0; --i) {
if (!mStreams[i].Disconnect()) {
// Probably the DOMMediaStream was GCed. Clean up.
mStreams.RemoveElementAt(i);
}
}
}
} // namespace mozilla
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