github.com/livekit/protocol@v1.16.1-0.20240517185851-47e4c6bba773/utils/codec.go (about)

     1  // Copyright 2023 LiveKit, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package utils
    16  
    17  import (
    18  	"github.com/livekit/protocol/livekit"
    19  	"github.com/livekit/protocol/logger"
    20  	"github.com/pion/webrtc/v3"
    21  )
    22  
    23  func GetMimeTypeForVideoCodec(codec livekit.VideoCodec) string {
    24  	switch codec {
    25  	case livekit.VideoCodec_H264_BASELINE,
    26  		livekit.VideoCodec_H264_MAIN,
    27  		livekit.VideoCodec_H264_HIGH:
    28  		return webrtc.MimeTypeH264
    29  	case livekit.VideoCodec_VP8:
    30  		return webrtc.MimeTypeVP8
    31  	default:
    32  		logger.Errorw("GetMimeTypeForVideoCodec unimplemented", nil, "codec", codec.String())
    33  		return ""
    34  	}
    35  }
    36  
    37  func GetMimeTypeForAudioCodec(codec livekit.AudioCodec) string {
    38  	// AAC is not supported in webrtc
    39  
    40  	switch codec {
    41  	case livekit.AudioCodec_OPUS:
    42  		return webrtc.MimeTypeOpus
    43  	default:
    44  		logger.Errorw("GetMimeTypeForAudioCodec unimplemented", nil, "codec", codec.String())
    45  		return ""
    46  	}
    47  }