21                                                const VideoCodec& codec) {  in SumStreamMaxBitrate()  argument
24     bitrate_sum += codec.simulcastStream[i].maxBitrate;  in SumStreamMaxBitrate()
29 int SimulcastUtility::NumberOfSimulcastStreams(const VideoCodec& codec) {  in NumberOfSimulcastStreams()  argument
31       codec.numberOfSimulcastStreams < 1 ? 1 : codec.numberOfSimulcastStreams;  in NumberOfSimulcastStreams()
32   uint32_t simulcast_max_bitrate = SumStreamMaxBitrate(streams, codec);  in NumberOfSimulcastStreams()
39 bool SimulcastUtility::ValidSimulcastParameters(const VideoCodec& codec,  in ValidSimulcastParameters()  argument
42   if (codec.width != codec.simulcastStream[num_streams - 1].width ||  in ValidSimulcastParameters()
43       codec.height != codec.simulcastStream[num_streams - 1].height) {  in ValidSimulcastParameters()
47     if (codec.width * codec.simulcastStream[i].height !=  in ValidSimulcastParameters()
48         codec.height * codec.simulcastStream[i].width) {  in ValidSimulcastParameters()
52   if (codec.codecType == webrtc::kVideoCodecVP8) {  in ValidSimulcastParameters()
54       if (codec.simulcastStream[i].width < codec.simulcastStream[i - 1].width) {  in ValidSimulcastParameters()
62       if (codec.simulcastStream[i].width !=  in ValidSimulcastParameters()
63           codec.simulcastStream[i - 1].width * 2) {  in ValidSimulcastParameters()
71     if (fabs(codec.simulcastStream[i].maxFramerate -  in ValidSimulcastParameters()
72              codec.simulcastStream[i - 1].maxFramerate) > 1e-9) {  in ValidSimulcastParameters()
79     if (codec.simulcastStream[i].numberOfTemporalLayers !=  in ValidSimulcastParameters()
80         codec.simulcastStream[i + 1].numberOfTemporalLayers)  in ValidSimulcastParameters()
86 bool SimulcastUtility::IsConferenceModeScreenshare(const VideoCodec& codec) {  in IsConferenceModeScreenshare()  argument
87   if (codec.mode != VideoCodecMode::kScreensharing ||  in IsConferenceModeScreenshare()
88       NumberOfTemporalLayers(codec, 0) != 2) {  in IsConferenceModeScreenshare()
93   return (codec.numberOfSimulcastStreams == 0 && codec.maxBitrate == 1000) ||  in IsConferenceModeScreenshare()
94          (codec.numberOfSimulcastStreams >= 1 &&  in IsConferenceModeScreenshare()
95           codec.simulcastStream[0].maxBitrate == 1000 &&  in IsConferenceModeScreenshare()
96           codec.simulcastStream[0].targetBitrate == 200);  in IsConferenceModeScreenshare()
99 int SimulcastUtility::NumberOfTemporalLayers(const VideoCodec& codec,  in NumberOfTemporalLayers()  argument
102       std::max<uint8_t>(1, codec.VP8().numberOfTemporalLayers);  in NumberOfTemporalLayers()
103   if (codec.numberOfSimulcastStreams > 0) {  in NumberOfTemporalLayers()
104     RTC_DCHECK_LT(spatial_id, codec.numberOfSimulcastStreams);  in NumberOfTemporalLayers()
107                  codec.simulcastStream[spatial_id].numberOfTemporalLayers);  in NumberOfTemporalLayers()