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/*
* Copyright 2004 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 "pc/channel_manager.h"
#include <utility>
#include "absl/algorithm/container.h"
#include "absl/memory/memory.h"
#include "absl/strings/match.h"
#include "api/media_types.h"
#include "api/sequence_checker.h"
#include "media/base/media_constants.h"
#include "pc/channel.h"
#include "rtc_base/checks.h"
#include "rtc_base/location.h"
#include "rtc_base/trace_event.h"
namespace cricket {
// static
std::unique_ptr<ChannelManager> ChannelManager::Create(
MediaEngineInterface* media_engine,
rtc::UniqueRandomIdGenerator* ssrc_generator,
bool enable_rtx,
rtc::Thread* worker_thread,
rtc::Thread* network_thread) {
RTC_DCHECK(network_thread);
RTC_DCHECK(worker_thread);
return absl::WrapUnique(new ChannelManager(
media_engine, ssrc_generator, enable_rtx, worker_thread, network_thread));
}
ChannelManager::ChannelManager(MediaEngineInterface* media_engine,
rtc::UniqueRandomIdGenerator* ssrc_generator,
bool enable_rtx,
rtc::Thread* worker_thread,
rtc::Thread* network_thread)
: media_engine_(media_engine),
ssrc_generator_(ssrc_generator),
signaling_thread_(rtc::Thread::Current()),
worker_thread_(worker_thread),
network_thread_(network_thread) {
RTC_DCHECK_RUN_ON(signaling_thread_);
RTC_DCHECK(worker_thread_);
RTC_DCHECK(network_thread_);
if (media_engine_) {
// TODO(tommi): Change VoiceEngine to do ctor time initialization so that
// this isn't necessary.
worker_thread_->Invoke<void>(RTC_FROM_HERE, [&] { media_engine_->Init(); });
}
}
ChannelManager::~ChannelManager() {
RTC_DCHECK_RUN_ON(signaling_thread_);
}
std::unique_ptr<VoiceChannel> ChannelManager::CreateVoiceChannel(
webrtc::Call* call,
const MediaConfig& media_config,
absl::string_view mid,
bool srtp_required,
const webrtc::CryptoOptions& crypto_options,
const AudioOptions& options) {
RTC_DCHECK(call);
RTC_DCHECK(media_engine_);
// TODO(bugs.webrtc.org/11992): Remove this workaround after updates in
// PeerConnection and add the expectation that we're already on the right
// thread.
if (!worker_thread_->IsCurrent()) {
return worker_thread_->Invoke<std::unique_ptr<VoiceChannel>>(
RTC_FROM_HERE, [&] {
return CreateVoiceChannel(call, media_config, mid, srtp_required,
crypto_options, options);
});
}
RTC_DCHECK_RUN_ON(worker_thread_);
VoiceMediaChannel* media_channel = media_engine_->voice().CreateMediaChannel(
call, media_config, options, crypto_options);
if (!media_channel) {
return nullptr;
}
auto voice_channel = std::make_unique<VoiceChannel>(
worker_thread_, network_thread_, signaling_thread_,
absl::WrapUnique(media_channel), mid, srtp_required, crypto_options,
ssrc_generator_);
return voice_channel;
}
std::unique_ptr<VideoChannel> ChannelManager::CreateVideoChannel(
webrtc::Call* call,
const MediaConfig& media_config,
absl::string_view mid,
bool srtp_required,
const webrtc::CryptoOptions& crypto_options,
const VideoOptions& options,
webrtc::VideoBitrateAllocatorFactory* video_bitrate_allocator_factory) {
RTC_DCHECK(call);
RTC_DCHECK(media_engine_);
// TODO(bugs.webrtc.org/11992): Remove this workaround after updates in
// PeerConnection and add the expectation that we're already on the right
// thread.
if (!worker_thread_->IsCurrent()) {
return worker_thread_->Invoke<std::unique_ptr<VideoChannel>>(
RTC_FROM_HERE, [&] {
return CreateVideoChannel(call, media_config, mid, srtp_required,
crypto_options, options,
video_bitrate_allocator_factory);
});
}
RTC_DCHECK_RUN_ON(worker_thread_);
VideoMediaChannel* media_channel = media_engine_->video().CreateMediaChannel(
call, media_config, options, crypto_options,
video_bitrate_allocator_factory);
if (!media_channel) {
return nullptr;
}
auto video_channel = std::make_unique<VideoChannel>(
worker_thread_, network_thread_, signaling_thread_,
absl::WrapUnique(media_channel), mid, srtp_required, crypto_options,
ssrc_generator_);
return video_channel;
}
} // namespace cricket
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