/*
* Copyright 2023 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/enable_media.h"
#include <memory>
#include <utility>
#include "absl/base/nullability.h"
#include "api/environment/environment.h"
#include "api/peer_connection_interface.h"
#include "api/scoped_refptr.h"
#include "call/call.h"
#include "call/call_config.h"
#include "media/base/media_engine.h"
#include "media/engine/webrtc_video_engine.h"
#include "media/engine/webrtc_voice_engine.h"
#include "pc/media_factory.h"
namespace webrtc {
namespace {
using ::cricket::CompositeMediaEngine;
using ::cricket::MediaEngineInterface;
using ::cricket::WebRtcVideoEngine;
using ::cricket::WebRtcVoiceEngine;
class MediaFactoryImpl :
public MediaFactory {
public:
MediaFactoryImpl() =
default;
MediaFactoryImpl(
const MediaFactoryImpl&) =
delete;
MediaFactoryImpl&
operator=(
const MediaFactoryImpl&) =
delete;
~MediaFactoryImpl() override =
default;
std::unique_ptr<Call> CreateCall(CallConfig config) override {
return webrtc::Call::Create(std::move(config));
}
std::unique_ptr<MediaEngineInterface> CreateMediaEngine(
const Environment& env,
PeerConnectionFactoryDependencies& deps) override {
absl::Nullable<scoped_refptr<AudioProcessing>> audio_processing =
deps.audio_processing_builder != nullptr
? std::move(deps.audio_processing_builder)->Build(env)
: std::move(deps.audio_processing);
auto audio_engine = std::make_unique<WebRtcVoiceEngine>(
&env.task_queue_factory(), deps.adm.get(),
std::move(deps.audio_encoder_factory),
std::move(deps.audio_decoder_factory), std::move(deps.audio_mixer),
std::move(audio_processing), std::move(deps.audio_frame_processor),
env.field_trials());
auto video_engine = std::make_unique<WebRtcVideoEngine>(
std::move(deps.video_encoder_factory),
std::move(deps.video_decoder_factory), env.field_trials());
return std::make_unique<CompositeMediaEngine>(std::move(audio_engine),
std::move(video_engine));
}
};
}
// namespace
void EnableMedia(PeerConnectionFactoryDependencies& deps) {
if (deps.media_factory != nullptr) {
// Do nothing if media is already enabled. Overwriting media_factory can be
// harmful when a different (e.g. test-only) implementation is used.
return;
}
deps.media_factory = std::make_unique<MediaFactoryImpl>();
}
}
// namespace webrtc
