How to get remoteParticipant audioBuffer because i want to convert PCM Buffer？

[liuyang2211]

How to get remoteParticipant audioBuffer because i want to convert PCM Buffer？

[hiroshihorie]

You can call add(audioRenderer:) on RemoteAudioTrack and you will receive PCM audio buffer on the AudioRenderer protocol.

@objc
public protocol AudioRenderer {
    @objc
    func render(pcmBuffer: AVAudioPCMBuffer)
}

[liuyang2211]

Thanks , but when I implemented the protocol, it only output a CMSampleBuffer and did not provide AVAudioPCMBuffer

sampleBuffer = CMSampleBuffer 0x101e180c0 retainCount: 3 allocator: 0x203b33c70
invalid = NO
dataReady = YES
makeDataReadyCallback = 0x0
makeDataReadyRefcon = 0x0
formatDescription = <CMAudioFormatDescription 0x300b94f00 [0x203b33c70]> {
mediaType:'soun'
mediaSubType:'lpcm'
mediaSpecific: {
ASBD: {
mSampleRate: 48000.000000
mFormatID: 'lpcm'
mFormatFlags: 0xc
mBytesPerPacket: 2
mFramesPerPacket: 1
mBytesPerFrame: 2
mChannelsPerFrame: 1
mBitsPerChannel: 16 }
cookie: {(null)}
ACL: {单声道}
FormatList Array: {
Index: 0
ChannelLayoutTag: 0x640001
ASBD: {
mSampleRate: 48000.000000
mFormatID: 'lpcm'
mFormatFlags: 0xc
mBytesPerPacket: 2
mFramesPerPacket: 1
mBytesPerFrame: 2
mChannelsPerFrame: 1
mBitsPerChannel: 16 }}
}
extensions: {(null)}
}
sbufToTrackReadiness = 0x0
numSamples = 480
outputPTS = {351840/48000 = 7.330}(based on cachedOutputPresentationTimeStamp)
sampleTimingArray[1] = {
{PTS = {351840/48000 = 7.330}, DTS = {INVALID}, duration = {1/48000 = 0.000}},
}
dataBuffer = {
CMBlockBuffer 0x30088a250 totalDataLength: 960 retainCount: 1 allocator: 0x203b33c70 subBlockCapacity: 2
[0] 960 bytes @ offset 0 Memory Block 0x101e15db0, 960 bytes (allocator 0x203b33c70)
}