AudioQueueStart But no voice - swift

Question

import Foundation
import AudioToolbox
class AudioPlay {
//setting buffer num
static let knumberBuffers = 3
var aqData = AQPlayerState.init()
//A custom structure for a playback audio queue
class AQPlayerState {
var mDataFormat = AudioStreamBasicDescription()
var mQueue:AudioQueueRef?
var mBuffers = [AudioQueueBufferRef?].init(repeating: nil, count: AudioPlay.knumberBuffers)
var mAudioFile:AudioFileID?
var bufferByteSize = UInt32()
var mCurrentPacket:Int64?
var mNumPacketsToRead = UInt32()
var mPacketDescs:UnsafeMutablePointer<AudioStreamPacketDescription>?
var mIsRunning = false
}
//playbackAudioQueue callback
static let HandleOutputBuffer:AudioQueueOutputCallback = { (aqData1, inAQ, inBuffer) in
var pAqData = (aqData1?.assumingMemoryBound(to: AQPlayerState.self).pointee)!
guard pAqData.mIsRunning || pAqData.mQueue != nil else{
print("audioplay is not running exit callback func")
return
}
var numBytesReadFromFile = UInt32()
var numPackets = pAqData.mNumPacketsToRead
AudioFileReadPacketData(pAqData.mAudioFile!, false, &numBytesReadFromFile, pAqData.mPacketDescs, pAqData.mCurrentPacket!, &numPackets, inBuffer.pointee.mAudioData)
if numPackets > 0 {
inBuffer.pointee.mAudioDataByteSize = numBytesReadFromFile
AudioQueueEnqueueBuffer(pAqData.mQueue!, inBuffer, ((pAqData.mPacketDescs != nil) ? numPackets : UInt32(0)), pAqData.mPacketDescs)
pAqData.mCurrentPacket! += Int64(numPackets)
}else{
AudioQueueStop(pAqData.mQueue!, false)
pAqData.mIsRunning = false
}
}
//call func to set the property
//create new outputqueue
//start th audioqueue
func start() {
let url = Bundle.main.url(forResource: "123", withExtension: "mp3")!
let audioFileURL = url as CFURL
print(audioFileURL)
let result = AudioFileOpenURL(audioFileURL, .readPermission, 0, &aqData.mAudioFile)
print(result)
var dataFormatSize = UInt32(MemoryLayout.size(ofValue: aqData.mDataFormat))
let result1 = AudioFileGetProperty(aqData.mAudioFile!, kAudioFilePropertyDataFormat,&dataFormatSize, &aqData.mDataFormat)
//get file property
var maxPacketSize = UInt32()
var propertySize = UInt32(MemoryLayout.size(ofValue: maxPacketSize))
let result2 = AudioFileGetProperty(aqData.mAudioFile!, kAudioFilePropertyPacketSizeUpperBound, &propertySize, &maxPacketSize)
//calculate and setting buffer size
DeriveBufferSize(ASBDesc: aqData.mDataFormat, maxPacketSize: maxPacketSize, seconds: 0.5, outBufferSize: &aqData.bufferByteSize, outNumPacketsToRead: &aqData.mNumPacketsToRead)
//check the format is VBR or CBR
let isFormatVBR = aqData.mDataFormat.mBytesPerPacket == 0 || aqData.mDataFormat.mFramesPerPacket == 0
if isFormatVBR {
aqData.mPacketDescs = UnsafeMutablePointer<AudioStreamPacketDescription>.allocate(capacity: MemoryLayout.size(ofValue: AudioStreamPacketDescription()))
}else{
aqData.mPacketDescs = nil
}
//create new audio queue
let result4 = AudioQueueNewOutput(&aqData.mDataFormat,AudioPlay.HandleOutputBuffer, &aqData,CFRunLoopGetCurrent(),CFRunLoopMode.commonModes.rawValue, 0, &aqData.mQueue)
//queue start
aqData.mIsRunning = true
//alloc memory buffer
aqData.mCurrentPacket = 0
for i in 0..<AudioPlay.knumberBuffers {
AudioQueueAllocateBuffer(aqData.mQueue!, aqData.bufferByteSize,&aqData.mBuffers[i])
AudioPlay.HandleOutputBuffer(&aqData,aqData.mQueue!, (aqData.mBuffers[i])!)
}
//start audioqueue
AudioQueueStart(aqData.mQueue!, nil)
repeat{
CFRunLoopRunInMode(CFRunLoopMode.defaultMode, 0.25, false)
}while (aqData.mIsRunning)
CFRunLoopRunInMode(CFRunLoopMode.defaultMode, 1, false)
}
//calculate and setting buffer size
func DeriveBufferSize(ASBDesc:AudioStreamBasicDescription,maxPacketSize:UInt32,seconds:Float64,outBufferSize:UnsafeMutablePointer<UInt32>,outNumPacketsToRead:UnsafeMutablePointer<UInt32>) {
let maxBufferSize:UInt32 = 0x50000
let minBufferSIze:UInt32 = 0x4000
if ASBDesc.mFramesPerPacket != 0 {
let numPacketsForTime = ASBDesc.mSampleRate / Float64(ASBDesc.mFramesPerPacket) * seconds
outBufferSize.pointee = UInt32(numPacketsForTime) * maxPacketSize
}else{
outBufferSize.pointee = (maxBufferSize > maxPacketSize) ? maxBufferSize:maxPacketSize
}
if outBufferSize.pointee > maxBufferSize && outBufferSize.pointee > maxPacketSize {
outBufferSize.pointee = maxBufferSize
}else{
if outBufferSize.pointee < minBufferSIze{
outBufferSize.pointee = minBufferSIze
}
}
outNumPacketsToRead.pointee = outBufferSize.pointee/maxPacketSize
}
//dispose the audioqueue
func Dispose() {
AudioQueueDispose(aqData.mQueue!, true)
AudioFileClose(aqData.mAudioFile!)
free(aqData.mPacketDescs)
}
}
above code is writed according AudioQueueServiceProgrammingGuide!
create an instence of this class,and call the start() func
compile ok,but no output voice.
I had check the code many times but no advancing
can any one who familiar with audiiqueue help me?
Any help will be appreciated.

Answer 1

replace "AudioFileReadPacketData" with "AudioFileReadPackets" can fix this problem!
but I get a new problem like below sometime! sometimes it works well!
Stream Audio(20535,0x1085ac3c0) malloc: * error for object 0x6080001f6300: Invalid pointer dequeued from free list
* set a breakpoint in malloc_error_break to