82   if (!media_channel_ || stopped_) {  in GetParameters()
86     return ssrc_ ? media_channel_->GetRtpReceiveParameters(*ssrc_)  in GetParameters()
87                  : media_channel_->GetDefaultRtpReceiveParameters();  in GetParameters()
95   if (media_channel_ && ssrc_.has_value() && !stopped_) {  in SetFrameDecryptor()
97       media_channel_->SetFrameDecryptor(*ssrc_, frame_decryptor_);  in SetFrameDecryptor()
112     if (media_channel_ && !stopped_) {  in SetDepacketizerToDecoderFrameTransformer()
113       media_channel_->SetDepacketizerToDecoderFrameTransformer(  in SetDepacketizerToDecoderFrameTransformer()
125   if (!media_channel_) {  in Stop()
140   RTC_DCHECK(media_channel_);  in RestartMediaChannel()
160     if (frame_transformer_ && media_channel_) {  in RestartMediaChannel()
161       media_channel_->SetDepacketizerToDecoderFrameTransformer(  in RestartMediaChannel()
168       ssrc, worker_thread_, frame_decryptor_, media_channel_, stopped_);  in RestartMediaChannel()
171   delay_->OnStart(media_channel_, ssrc.value_or(0));  in RestartMediaChannel()
175   RTC_DCHECK(media_channel_);  in SetSink()
177     media_channel_->SetSink(*ssrc_, sink);  in SetSink()
180   media_channel_->SetDefaultSink(sink);  in SetSink()
184   if (!media_channel_) {  in SetupMediaChannel()
192   if (!media_channel_) {  in SetupUnsignaledMediaChannel()
255     if (encoded_sink_enabled && media_channel_) {  in SetMediaChannel()
260     media_channel_ = static_cast<cricket::VideoMediaChannel*>(media_channel);  in SetMediaChannel()
262     if (media_channel_) {  in SetMediaChannel()
265         media_channel_->GenerateKeyFrame(ssrc_.value_or(0));  in SetMediaChannel()
272         media_channel_->SetDepacketizerToDecoderFrameTransformer(  in SetMediaChannel()
287   if (!media_channel_ || !ssrc_ || stopped_) {  in GetSources()
291       RTC_FROM_HERE, [&] { return media_channel_->GetSources(*ssrc_); });  in GetSources()
296   if (!media_channel_) {  in OnGenerateKeyFrame()
302   media_channel_->GenerateKeyFrame(ssrc_.value_or(0));  in OnGenerateKeyFrame()
318   if (media_channel_) {  in SetEncodedSinkEnabled()
322       media_channel_->SetRecordableEncodedFrameCallback(  in SetEncodedSinkEnabled()
329       media_channel_->ClearRecordableEncodedFrameCallback(ssrc_.value_or(0));  in SetEncodedSinkEnabled()