#import <Foundation/Foundation.h>@interface EYAudio : NSObject// 播放的數據流數據- (void)playWithData:(NSData *)data;// 聲音播放出現問題的時候可以重置一下- (void)resetPlay;// 停止播放- (void)stop;@end

#import <AVFoundation/AVFoundation.h>#import <AudioToolbox/AudioToolbox.h>#define MIN_SIZE_PER_FRAME 1920  //每個包的大小,室內機要求為960,具體看下面的配置信息#define QUEUE_BUFFER_SIZE 3   //緩沖器個數#define SAMPLE_RATE    16000 //采樣頻率@interface EYAudio(){  AudioQueueRef audioQueue;                 //音頻播放隊列  AudioStreamBasicDescription _audioDescription;  AudioQueueBufferRef audioQueueBuffers[QUEUE_BUFFER_SIZE]; //音頻緩存  BOOL audioQueueBufferUsed[QUEUE_BUFFER_SIZE];       //判斷音頻緩存是否在使用  NSLock *sysnLock;  NSMutableData *tempData;  OSStatus osState;}@end@implementation EYAudio#pragma mark - 提前設置AVAudioSessionCategoryMultiRoute 播放和錄音+ (void)initialize{  NSError *error = nil;  //只想要播放:AVAudioSessionCategoryPlayback  //只想要錄音:AVAudioSessionCategoryRecord  //想要"播放和錄音"同時進行 必須設置為:AVAudioSessionCategoryMultiRoute 而不是AVAudioSessionCategoryPlayAndRecord(設置這個不好使)  BOOL ret = [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryMultiRoute error:&error];  if (!ret) {    NSLog(@"設置聲音環境失敗");    return;  }  //啟用audio session  ret = [[AVAudioSession sharedInstance] setActive:YES error:&error];  if (!ret)  {    NSLog(@"啟動失敗");    return;  }}- (void)resetPlay{  if (audioQueue != nil) {    AudioQueueReset(audioQueue);  }}- (void)stop{  if (audioQueue != nil) {    AudioQueueStop(audioQueue,true);  }  audioQueue = nil;  sysnLock = nil;}- (instancetype)init{  self = [super init];  if (self) {    sysnLock = [[NSLock alloc]init];    //設置音頻參數 具體的信息需要問后臺    _audioDescription.mSampleRate = SAMPLE_RATE;    _audioDescription.mFormatID = kAudioFormatLinearPCM;    _audioDescription.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;    //1單聲道    _audioDescription.mChannelsPerFrame = 1;    //每一個packet一偵數據,每個數據包下的楨數，即每個數據包里面有多少楨    _audioDescription.mFramesPerPacket = 1;    //每個采樣點16bit量化 語音每采樣點占用位數    _audioDescription.mBitsPerChannel = 16;    _audioDescription.mBytesPerFrame = (_audioDescription.mBitsPerChannel / 8) * _audioDescription.mChannelsPerFrame;    //每個數據包的bytes總數，每楨的bytes數*每個數據包的楨數    _audioDescription.mBytesPerPacket = _audioDescription.mBytesPerFrame * _audioDescription.mFramesPerPacket;    // 使用player的內部線程播放 新建輸出    AudioQueueNewOutput(&_audioDescription, AudioPlayerAQInputCallback, (__bridge void * _Nullable)(self), nil, 0, 0, &audioQueue);    // 設置音量    AudioQueueSetParameter(audioQueue, kAudioQueueParam_Volume, 1.0);    // 初始化需要的緩沖區    for (int i = 0; i < QUEUE_BUFFER_SIZE; i++) {      audioQueueBufferUsed[i] = false;      osState = AudioQueueAllocateBuffer(audioQueue, MIN_SIZE_PER_FRAME, &audioQueueBuffers[i]);    }    osState = AudioQueueStart(audioQueue, NULL);    if (osState != noErr) {      NSLog(@"AudioQueueStart Error");    }  }  return self;}// 播放數據-(void)playWithData:(NSData *)data{  [sysnLock lock];  tempData = [NSMutableData new];  [tempData appendData: data];  NSUInteger len = tempData.length;  Byte *bytes = (Byte*)malloc(len);  [tempData getBytes:bytes length: len];  int i = 0;  while (true) {    if (!audioQueueBufferUsed[i]) {      audioQueueBufferUsed[i] = true;      break;    }else {      i++;      if (i >= QUEUE_BUFFER_SIZE) {        i = 0;      }    }  }  audioQueueBuffers[i] -> mAudioDataByteSize = (unsigned int)len;  // 把bytes的頭地址開始的len字節給mAudioData,向第i個緩沖器  memcpy(audioQueueBuffers[i] -> mAudioData, bytes, len);  // 釋放對象  free(bytes);  //將第i個緩沖器放到隊列中,剩下的都交給系統了  AudioQueueEnqueueBuffer(audioQueue, audioQueueBuffers[i], 0, NULL);  [sysnLock unlock];}// ************************** 回調 **********************************// 回調回來把buffer狀態設為未使用static void AudioPlayerAQInputCallback(void* inUserData,AudioQueueRef audioQueueRef, AudioQueueBufferRef audioQueueBufferRef) {  EYAudio* audio = (__bridge EYAudio*)inUserData;  [audio resetBufferState:audioQueueRef and:audioQueueBufferRef];}- (void)resetBufferState:(AudioQueueRef)audioQueueRef and:(AudioQueueBufferRef)audioQueueBufferRef {  // 防止空數據讓audioqueue后續都不播放,為了安全防護一下  if (tempData.length == 0) {    audioQueueBufferRef->mAudioDataByteSize = 1;    Byte* byte = audioQueueBufferRef->mAudioData;    byte = 0;    AudioQueueEnqueueBuffer(audioQueueRef, audioQueueBufferRef, 0, NULL);  }  for (int i = 0; i < QUEUE_BUFFER_SIZE; i++) {    // 將這個buffer設為未使用    if (audioQueueBufferRef == audioQueueBuffers[i]) {      audioQueueBufferUsed[i] = false;    }  }}@end

#import <Foundation/Foundation.h>@interface ESARecord : NSObject//開始錄音- (void)startRecording;//停止錄音- (void)stopRecording;@end

#import "ESARecord.h"#import <AudioToolbox/AudioToolbox.h>#define QUEUE_BUFFER_SIZE 3   // 輸出音頻隊列緩沖個數#define kDefaultBufferDurationSeconds 0.03//調整這個值使得錄音的緩沖區大小為960,實際會小于或等于960,需要處理小于960的情況#define kDefaultSampleRate 16000  //定義采樣率為16000extern NSString * const ESAIntercomNotifationRecordString;static BOOL isRecording = NO;@interface ESARecord(){  AudioQueueRef _audioQueue;             //輸出音頻播放隊列  AudioStreamBasicDescription _recordFormat;  AudioQueueBufferRef _audioBuffers[QUEUE_BUFFER_SIZE]; //輸出音頻緩存}@property (nonatomic, assign) BOOL isRecording;@end@implementation ESARecord- (instancetype)init{  self = [super init];  if (self) {    //重置下    memset(&_recordFormat, 0, sizeof(_recordFormat));    _recordFormat.mSampleRate = kDefaultSampleRate;    _recordFormat.mChannelsPerFrame = 1;    _recordFormat.mFormatID = kAudioFormatLinearPCM;    _recordFormat.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger | kLinearPCMFormatFlagIsPacked;    _recordFormat.mBitsPerChannel = 16;    _recordFormat.mBytesPerPacket = _recordFormat.mBytesPerFrame = (_recordFormat.mBitsPerChannel / 8) * _recordFormat.mChannelsPerFrame;    _recordFormat.mFramesPerPacket = 1;    //初始化音頻輸入隊列    AudioQueueNewInput(&_recordFormat, inputBufferHandler, (__bridge void *)(self), NULL, NULL, 0, &_audioQueue);    //計算估算的緩存區大小    int frames = (int)ceil(kDefaultBufferDurationSeconds * _recordFormat.mSampleRate);    int bufferByteSize = frames * _recordFormat.mBytesPerFrame;    NSLog(@"緩存區大小%d",bufferByteSize);    //創建緩沖器    for (int i = 0; i < QUEUE_BUFFER_SIZE; i++){      AudioQueueAllocateBuffer(_audioQueue, bufferByteSize, &_audioBuffers[i]);      AudioQueueEnqueueBuffer(_audioQueue, _audioBuffers[i], 0, NULL);    }  }  return self;}-(void)startRecording{  // 開始錄音  AudioQueueStart(_audioQueue, NULL);  isRecording = YES;}void inputBufferHandler(void *inUserData, AudioQueueRef inAQ, AudioQueueBufferRef inBuffer, const AudioTimeStamp *inStartTime,UInt32 inNumPackets, const AudioStreamPacketDescription *inPacketDesc){  if (inNumPackets > 0) {    ESARecord *recorder = (__bridge ESARecord*)inUserData;    [recorder processAudioBuffer:inBuffer withQueue:inAQ];  }    if (isRecording) {    AudioQueueEnqueueBuffer(inAQ, inBuffer, 0, NULL);  }}- (void)processAudioBuffer:(AudioQueueBufferRef )audioQueueBufferRef withQueue:(AudioQueueRef )audioQueueRef{  NSMutableData * dataM = [NSMutableData dataWithBytes:audioQueueBufferRef->mAudioData length:audioQueueBufferRef->mAudioDataByteSize];    if (dataM.length < 960) { //處理長度小于960的情況,此處是補00    Byte byte[] = {0x00};    NSData * zeroData = [[NSData alloc] initWithBytes:byte length:1];    for (NSUInteger i = dataM.length; i < 960; i++) {      [dataM appendData:zeroData];    }  }  // NSLog(@"實時錄音的數據--%@", dataM);  //此處是發通知將dataM 傳遞出去  [[NSNotificationCenter defaultCenter] postNotificationName:@"EYRecordNotifacation" object:@{@"data" : dataM}];}-(void)stopRecording{  if (isRecording)  {    isRecording = NO;        //停止錄音隊列和移除緩沖區,以及關閉session，這里無需考慮成功與否    AudioQueueStop(_audioQueue, true);    //移除緩沖區,true代表立即結束錄制，false代表將緩沖區處理完再結束    AudioQueueDispose(_audioQueue, true);  }  NSLog(@"停止錄音");}@end