Nagram/TMessagesProj/jni/voip/tgcalls/ChannelManager.cpp
2023-02-19 01:24:25 +04:00

152 lines
6.0 KiB
C++

#include "ChannelManager.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 "rtc_base/checks.h"
#include "rtc_base/trace_event.h"
namespace tgcalls {
// static
std::unique_ptr<ChannelManager> ChannelManager::Create(
std::unique_ptr<cricket::MediaEngineInterface> media_engine,
rtc::Thread* worker_thread,
rtc::Thread* network_thread) {
RTC_DCHECK(network_thread);
RTC_DCHECK(worker_thread);
return absl::WrapUnique(new ChannelManager(
std::move(media_engine), worker_thread, network_thread));
}
ChannelManager::ChannelManager(
std::unique_ptr<cricket::MediaEngineInterface> media_engine,
rtc::Thread* worker_thread,
rtc::Thread* network_thread)
: media_engine_(std::move(media_engine)),
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_->BlockingCall([&] { media_engine_->Init(); });
}
}
ChannelManager::~ChannelManager() {
RTC_DCHECK_RUN_ON(signaling_thread_);
worker_thread_->BlockingCall([&] {
RTC_DCHECK_RUN_ON(worker_thread_);
RTC_DCHECK(voice_channels_.empty());
RTC_DCHECK(video_channels_.empty());
// While `media_engine_` is const throughout the ChannelManager's lifetime,
// it requires destruction to happen on the worker thread. Instead of
// marking the pointer as non-const, we live with this const_cast<> in the
// destructor.
const_cast<std::unique_ptr<cricket::MediaEngineInterface>&>(media_engine_).reset();
});
}
cricket::VoiceChannel* ChannelManager::CreateVoiceChannel(
webrtc::Call* call,
const cricket::MediaConfig& media_config,
const std::string& mid,
bool srtp_required,
const webrtc::CryptoOptions& crypto_options,
const cricket::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()) {
cricket::VoiceChannel* temp = nullptr;
worker_thread_->BlockingCall([&] {
temp = CreateVoiceChannel(call, media_config, mid, srtp_required,
crypto_options, options);
});
return temp;
}
RTC_DCHECK_RUN_ON(worker_thread_);
cricket::VoiceMediaChannel* media_channel = media_engine_->voice().CreateMediaChannel(
call, media_config, options, crypto_options);
if (!media_channel) {
return nullptr;
}
auto voice_channel = std::make_unique<cricket::VoiceChannel>(
worker_thread_, network_thread_, signaling_thread_,
absl::WrapUnique(media_channel), mid, srtp_required, crypto_options,
&ssrc_generator_);
cricket::VoiceChannel* voice_channel_ptr = voice_channel.get();
voice_channels_.push_back(std::move(voice_channel));
return voice_channel_ptr;
}
void ChannelManager::DestroyVoiceChannel(cricket::VoiceChannel* channel) {
TRACE_EVENT0("webrtc", "ChannelManager::DestroyVoiceChannel");
RTC_DCHECK_RUN_ON(worker_thread_);
voice_channels_.erase(absl::c_find_if(
voice_channels_, [&](const auto& p) { return p.get() == channel; }));
}
cricket::VideoChannel* ChannelManager::CreateVideoChannel(
webrtc::Call* call,
const cricket::MediaConfig& media_config,
const std::string& mid,
bool srtp_required,
const webrtc::CryptoOptions& crypto_options,
const cricket::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()) {
cricket::VideoChannel* temp = nullptr;
worker_thread_->BlockingCall([&] {
temp = CreateVideoChannel(call, media_config, mid, srtp_required,
crypto_options, options,
video_bitrate_allocator_factory);
});
return temp;
}
RTC_DCHECK_RUN_ON(worker_thread_);
cricket::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<cricket::VideoChannel>(
worker_thread_, network_thread_, signaling_thread_,
absl::WrapUnique(media_channel), mid, srtp_required, crypto_options,
&ssrc_generator_);
cricket::VideoChannel* video_channel_ptr = video_channel.get();
video_channels_.push_back(std::move(video_channel));
return video_channel_ptr;
}
void ChannelManager::DestroyVideoChannel(cricket::VideoChannel* channel) {
TRACE_EVENT0("webrtc", "ChannelManager::DestroyVideoChannel");
RTC_DCHECK_RUN_ON(worker_thread_);
video_channels_.erase(absl::c_find_if(
video_channels_, [&](const auto& p) { return p.get() == channel; }));
}
void ChannelManager::DestroyChannel(cricket::ChannelInterface* channel) {
RTC_DCHECK(channel);
if (!worker_thread_->IsCurrent()) {
// TODO(tommi): Do this asynchronously when we have a way to make sure that
// the call to DestroyChannel runs before ~Call() runs, which today happens
// inside an Invoke from the signaling thread in PeerConnectin::Close().
worker_thread_->BlockingCall([&] { DestroyChannel(channel); });
return;
}
if (channel->media_type() == cricket::MEDIA_TYPE_AUDIO) {
DestroyVoiceChannel(static_cast<cricket::VoiceChannel*>(channel));
} else {
RTC_DCHECK_EQ(channel->media_type(), cricket::MEDIA_TYPE_VIDEO);
DestroyVideoChannel(static_cast<cricket::VideoChannel*>(channel));
}
}
} // namespace tgcalls