Below is the code that i have In broadcast upload extension
override func broadcastStarted(withSetupInfo setupInfo: [String : NSObject]?) {
// 1. create compression session
let status = VTCompressionSessionCreate(allocator: nil, width: 1280, height: 720, codecType: kCMVideoCodecType_H264, encoderSpecification: nil, imageBufferAttributes: nil, compressedDataAllocator: nil, outputCallback: compressionOutputCallback as? VTCompressionOutputCallback, refcon: nil, compressionSessionOut: &compression_session)
if let session = compression_session{
VTSessionSetProperty(session, key: kVTCompressionPropertyKey_RealTime, value: kCFBooleanTrue)
let retStatus = VTCompressionSessionPrepareToEncodeFrames(session)
print("SBC: VTCompressionSessionCreate -", status == noErr, "PrepareToEncodeFrames -", retStatus == noErr)
}
}
override func processSampleBuffer(_ sampleBuffer: CMSampleBuffer, with sampleBufferType: RPSampleBufferType) {
//print("SBC: processSampleBuffer", sampleBuffer.numSamples, sampleBufferType.rawValue)
switch sampleBufferType {
case RPSampleBufferType.video:
// Handle video sample buffer
let pts = CMSampleBufferGetPresentationTimeStamp(sampleBuffer)
let imageBuffer:CVImageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer)!
if let session = compression_session {
// 2. encode frame
let ret = VTCompressionSessionEncodeFrame(session, imageBuffer: imageBuffer, presentationTimeStamp: pts, duration: CMTime.invalid, frameProperties: nil, sourceFrameRefcon: nil, infoFlagsOut: nil)
if ret == noErr{
print("SBC: VTCompressionSessionEncodeFrame ret", ret)
}
}
break
case RPSampleBufferType.audioApp:
// Handle audio sample buffer for app audio
break
case RPSampleBufferType.audioMic:
// Handle audio sample buffer for mic audio
break
@unknown default:
// Handle other sample buffer types
fatalError("Unknown type of sample buffer")
}
func compressionOutputCallback(outputCallbackRefCon:UnsafeMutableRawPointer?, sourceFrameRefCon:UnsafeMutableRawPointer?,
status:OSStatus, infoFlags:VTEncodeInfoFlags, sampleBuffer:CMSampleBuffer) {
// Do whatever you want with the sampleBuffer
if status != noErr{
NSLog("SBC: Error encoding video", status)
print("SBC: Error encoding video", status)
return
}
print("SBC: compressionOutputCallback dataBuffer", status)
}
What am i missing? ANY HELP WOULD BE APPRECIATED
