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iOS使用音频处理框架The Amazing Audio Engine实现音频录制播放

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ios 第三方音频框架the amazing audio engine使用,实现音频录制、播放,可设置配乐.

首先看一下效果图:

iOS使用音频处理框架The Amazing Audio Engine实现音频录制播放

下面贴上核心控制器代码:

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#import "viewcontroller.h"
#import <avfoundation/avfoundation.h>
#import "hwprogresshud.h"
#import "uiimage+hw.h"
#import "aerecorder.h"
#import "hwrecordingdrawview.h"
 
#define kmainw [uiscreen mainscreen].bounds.size.width
#define kmainh [uiscreen mainscreen].bounds.size.height
 
@interface viewcontroller ()
 
@property (nonatomic, strong) aerecorder *recorder;
@property (nonatomic, strong) aeaudiocontroller *audiocontroller;
@property (nonatomic, strong) aeaudiofileplayer *player;
@property (nonatomic, strong) aeaudiofileplayer *backgroundplayer;
@property (nonatomic, strong) nstimer *timer;
@property (nonatomic, strong) nsmutablearray *soundsource;
@property (nonatomic, weak) hwrecordingdrawview *recordingdrawview;
@property (nonatomic, weak) uilabel *reclabel;
@property (nonatomic, weak) uilabel *recordtimelabel;
@property (nonatomic, weak) uilabel *playtimelabel;
@property (nonatomic, weak) uibutton *auditionbtn;
@property (nonatomic, weak) uibutton *recordbtn;
@property (nonatomic, weak) uislider *slider;
@property (nonatomic, copy) nsstring *path;
 
@end
 
@implementation viewcontroller
 
- (aeaudiocontroller *)audiocontroller
{
  if (!_audiocontroller) {
  _audiocontroller = [[aeaudiocontroller alloc] initwithaudiodescription:[aeaudiocontroller noninterleavedfloatstereoaudiodescription] inputenabled:yes];
  _audiocontroller.preferredbufferduration = 0.005;
  _audiocontroller.usemeasurementmode = yes;
  }
 
  return _audiocontroller;
}
 
- (nsmutablearray *)soundsource
{
  if (!_soundsource) {
  _soundsource = [nsmutablearray array];
  }
 
  return _soundsource;
}
 
- ( void )viewdidload {
  [super viewdidload];
 
  [self creatcontrol];
}
 
- ( void )creatcontrol
{
  cgfloat marginx = 30.0f;
 
  //音频视图
  hwrecordingdrawview *recordingdrawview = [[hwrecordingdrawview alloc] initwithframe:cgrectmake(marginx, 80, kmainw - marginx * 2, 100)];
  [self.view addsubview:recordingdrawview];
  _recordingdrawview = recordingdrawview;
 
  //rec
  uilabel *reclabel = [[uilabel alloc] initwithframe:cgrectmake(marginx, cgrectgetmaxy(recordingdrawview.frame) + 20, 80, 40)];
  reclabel.text = @ "rec" ;
  reclabel.textcolor = [uicolor redcolor];
  [self.view addsubview:reclabel];
  _reclabel = reclabel;
 
  //录制时间
  uilabel *recordtimelabel = [[uilabel alloc] initwithframe:cgrectmake(cgrectgetmaxx(reclabel.frame) + 20, cgrectgetminy(reclabel.frame), 150, 40)];
  recordtimelabel.text = @ "录制时长:00:00" ;
  [self.view addsubview:recordtimelabel];
  _recordtimelabel = recordtimelabel;
 
  //播放时间
  uilabel *playtimelabel = [[uilabel alloc] initwithframe:cgrectmake(cgrectgetminx(recordtimelabel.frame), cgrectgetmaxy(recordtimelabel.frame), 150, 40)];
  playtimelabel.text = @ "播放时长:00:00" ;
  playtimelabel.hidden = yes;
  [self.view addsubview:playtimelabel];
  _playtimelabel = playtimelabel;
 
  //配乐按钮
  nsarray *titlearray = @[@ "无配乐" , @ "夏天" , @ "阳光海湾" ];
  cgfloat btnw = 80.0f;
  cgfloat padding = (kmainw - marginx * 2 - btnw * titlearray.count) / (titlearray.count - 1);
  for ( int i = 0; i < titlearray.count; i++) {
  cgfloat btnx = marginx + (btnw + padding) * i;
  uibutton *btn = [[uibutton alloc] initwithframe:cgrectmake(btnx, cgrectgetmaxy(playtimelabel.frame) + 20, btnw, btnw)];
  [btn settitle:titlearray[i] forstate:uicontrolstatenormal];
  btn.layer.cornerradius = btnw * 0.5;
  btn.layer.maskstobounds = yes;
  [btn setbackgroundimage:[uiimage imagewithcolor:[uicolor graycolor]] forstate:uicontrolstatenormal];
  [btn setbackgroundimage:[uiimage imagewithcolor:[uicolor orangecolor]] forstate:uicontrolstateselected];
  if (i == 0) btn.selected = yes;
  btn.tag = 100 + i;
  [btn addtarget:self action:@selector(changebackgroundmusic:) forcontrolevents:uicontroleventtouchupinside];
  [self.view addsubview:btn];
  }
 
  //配乐音量
  uilabel *backgroundlabel = [[uilabel alloc] initwithframe:cgrectmake(marginx + 10, cgrectgetmaxy(playtimelabel.frame) + 120, 80, 40)];
  backgroundlabel.text = @ "配乐音量" ;
  [self.view addsubview:backgroundlabel];
 
  //配乐音量
  uislider *slider = [[uislider alloc] initwithframe:cgrectmake(cgrectgetmaxx(backgroundlabel.frame) + 10, cgrectgetminy(backgroundlabel.frame), 210, 40)];
  slider.value = 0.4f;
  [slider addtarget:self action:@selector(slidervaluechanged:) forcontrolevents:uicontroleventvaluechanged];
  [self.view addsubview:slider];
  _slider = slider;
 
  //试听按钮
  uibutton *auditionbtn = [[uibutton alloc] initwithframe:cgrectmake(marginx, kmainh - 150, 120, 80)];
  auditionbtn.hidden = yes;
  auditionbtn.backgroundcolor = [uicolor blackcolor];
  [auditionbtn settitle:@ "试听" forstate:uicontrolstatenormal];
  [auditionbtn settitle:@ "停止" forstate:uicontrolstateselected];
  [auditionbtn addtarget:self action:@selector(auditionbtnonclick:) forcontrolevents:uicontroleventtouchupinside];
  [self.view addsubview:auditionbtn];
  _auditionbtn = auditionbtn;
 
  //录音按钮
  uibutton *recordbtn = [[uibutton alloc] initwithframe:cgrectmake(kmainw - marginx - 120, kmainh - 150, 120, 80)];
  recordbtn.backgroundcolor = [uicolor blackcolor];
  [recordbtn settitle:@ "开始" forstate:uicontrolstatenormal];
  [recordbtn settitle:@ "暂停" forstate:uicontrolstateselected];
  [recordbtn addtarget:self action:@selector(recordbtnonclick:) forcontrolevents:uicontroleventtouchupinside];
  [self.view addsubview:recordbtn];
  _recordbtn = recordbtn;
}
 
//配乐按钮点击事件
- ( void )changebackgroundmusic:(uibutton *)btn
{
  //更新选中状态
  for ( int i = 0; i < 3; i++) {
  uibutton *button = (uibutton *)[self.view viewwithtag:100 + i];
  button.selected = no;
  }
  btn.selected = yes;
 
  //移除之前配乐
  if (_backgroundplayer) {
  [_audiocontroller removechannels:@[_backgroundplayer]];
  _backgroundplayer = nil;
  }
 
  nsurl *url;
  if (btn.tag == 100) {
  return ;
  } else if (btn.tag == 101) {
  url = [[nsbundle mainbundle]urlforresource:@ "夏天.mp3" withextension:nil];
  } else if (btn.tag == 102) {
  url = [[nsbundle mainbundle]urlforresource:@ "阳光海湾.mp3" withextension:nil];
  }
  [self.audiocontroller start:null];
 
  nserror *averror = null;
  _backgroundplayer = [aeaudiofileplayer audiofileplayerwithurl:url error:&averror];
  _backgroundplayer.volume = _slider.value;
  _backgroundplayer.loop = yes;
  if (!_backgroundplayer) {
  [[[uialertview alloc] initwithtitle:@ "error"
      message:[nsstring stringwithformat:@ "couldn't start playback: %@" , [averror localizeddescription]]
      delegate:nil
     cancelbuttontitle:nil
     otherbuttontitles:@ "ok" , nil] show];
  return ;
  }
 
  //放完移除
  _backgroundplayer.removeuponfinish = yes;
  __weak viewcontroller *weakself = self;
  _backgroundplayer.completionblock = ^{
  weakself.backgroundplayer = nil;
  };
  [_audiocontroller addchannels:@[_backgroundplayer]];
}
 
//配乐音量slider滑动事件
- ( void )slidervaluechanged:(uislider *)slider
{
  if (_backgroundplayer) _backgroundplayer.volume = slider.value;
}
 
//录音按钮点击事件
- ( void )recordbtnonclick:(uibutton *)btn
{
  [[avaudiosession sharedinstance] requestrecordpermission:^( bool granted) {
  if (granted) {
   //用户同意获取麦克风
   dispatch_after(dispatch_time(dispatch_time_now, (int64_t)(.1f * nsec_per_sec)), dispatch_get_main_queue(), ^{
   btn.selected = !btn.selected;
  
   if (btn.selected) {
    [self startrecord];
   } else {
    [self finishrecord];
   }
   });
  
  } else {
   //用户不同意获取麦克风
   [hwprogresshud showmessage:@ "需要访问您的麦克风,请在“设置-隐私-麦克风”中允许访问。" duration:3.f];
  }
  }];
}
 
//开始录音
- ( void )startrecord
{
  _auditionbtn.hidden = yes;
  [self.audiocontroller start:null];
  _recorder = [[aerecorder alloc] initwithaudiocontroller:_audiocontroller];
  _path = [self getpath];
 
  nserror *error = null;
  if ( ![_recorder beginrecordingtofileatpath:_path filetype:kaudiofilem4atype error:&error] ) {
  [[[uialertview alloc] initwithtitle:@ "error" message:[nsstring stringwithformat:@ "couldn't start recording: %@" , [error localizeddescription]] delegate:nil cancelbuttontitle:nil otherbuttontitles:@ "ok" , nil] show];
  _recorder = nil;
  return ;
  }
 
  [self.soundsource removeallobjects];
  [self removetimer];
  [self addrecordtimer];
 
  [_audiocontroller addoutputreceiver:_recorder];
  [_audiocontroller addinputreceiver:_recorder];
}
 
//结束录音
- ( void )finishrecord
{
  _auditionbtn.hidden = no;
  _reclabel.hidden = no;
  [self removetimer];
 
  [_recorder finishrecording];
  [_audiocontroller removeoutputreceiver:_recorder];
  [_audiocontroller removeinputreceiver:_recorder];
  _recorder = nil;
}
 
//添加录音定时器
- ( void )addrecordtimer
{
  self.timer = [nstimer scheduledtimerwithtimeinterval:.2f target:self selector:@selector(recordtimeraction) userinfo:nil repeats:yes];
  [[nsrunloop mainrunloop] addtimer:self.timer formode:nsrunloopcommonmodes];
}
 
//录音定时器事件
- ( void )recordtimeraction
{
  //获取音频
  [catransaction begin];
  [catransaction setdisableactions:yes];
  float32 inputavg, inputpeak, outputavg, outputpeak;
  [_audiocontroller inputaveragepowerlevel:&inputavg peakholdlevel:&inputpeak];
  [_audiocontroller outputaveragepowerlevel:&outputavg peakholdlevel:&outputpeak];
  [self.soundsource insertobject:[nsnumber numberwithfloat:(inputpeak + 18) * 2.8] atindex:0];
  [catransaction commit];
  _recordingdrawview.pointarray = _soundsource;
 
  //rec闪动
  _reclabel.hidden = ( int )[self.recorder currenttime] % 2 == 1 ? yes : no;
 
  //录音时间
  nsstring *str = [self strwithtime:[self.recorder currenttime] interval:0.5f];
  if ([str intvalue] < 0) str = @ "录制时长:00:00" ;
  [self.recordtimelabel settext:[nsstring stringwithformat:@ "录制时长:%@" , str]];
}
 
//移除定时器
- ( void )removetimer
{
  [self.timer invalidate];
  self.timer = nil;
}
 
//试听按钮点击事件
- ( void )auditionbtnonclick:(uibutton *)btn
{
  btn.selected = !btn.selected;
 
  if (btn.selected) {
  [self playrecord];
  } else {
  [self stopplayrecord];
  }
}
 
//播放录音
- ( void )playrecord
{
  //更新界面
  _recordbtn.hidden = yes;
  [_playtimelabel settext:@ "播放时长:00:00" ];
  _playtimelabel.hidden = no;
 
  //取消背景音乐
  [self changebackgroundmusic:(uibutton *)[self.view viewwithtag:100]];
 
  if (![[nsfilemanager defaultmanager] fileexistsatpath:_path]) return ;
 
  nserror *error = nil;
  _player = [aeaudiofileplayer audiofileplayerwithurl:[nsurl fileurlwithpath:_path] error:&error];
  if (!_player) {
  [[[uialertview alloc] initwithtitle:@ "error"
      message:[nsstring stringwithformat:@ "couldn't start playback: %@" , [error localizeddescription]]
      delegate:nil
     cancelbuttontitle:nil
     otherbuttontitles:@ "ok" , nil] show];
  return ;
  }
 
  [self addplaytimer];
  _player.removeuponfinish = yes;
 
  __weak viewcontroller *weakself = self;
  _player.completionblock = ^{
  weakself.player = nil;
  weakself.auditionbtn.selected = no;
  [weakself stopplayrecord];
  };
  [self.audiocontroller start:null];
  [self.audiocontroller addchannels:@[_player]];
}
 
//停止播放录音
- ( void )stopplayrecord
{
  _recordbtn.hidden = no;
  _playtimelabel.hidden = yes;
  [self removetimer];
  if (_player) [_audiocontroller removechannels:@[_player]];
}
 
//添加播放定时器
- ( void )addplaytimer
{
  self.timer = [nstimer scheduledtimerwithtimeinterval:1.0f target:self selector:@selector(playtimeraction) userinfo:nil repeats:yes];
  [[nsrunloop mainrunloop] addtimer:self.timer formode:nsrunloopcommonmodes];
}
 
//播放定时器事件
- ( void )playtimeraction
{
  //播放时间
  nsstring *str = [self strwithtime:[_player currenttime] interval:1.f];
  if ([str intvalue] < 0) str = @ "播放时长:00:00" ;
  [_playtimelabel settext:[nsstring stringwithformat:@ "播放时长:%@" , str]];
}
 
//录制音频沙盒路径
- (nsstring *)getpath
{
  nsdateformatter *formatter = [[nsdateformatter alloc] init];
  [formatter setdateformat:@ "yyyymmddhhmmss" ];
  nsstring *recordname = [nsstring stringwithformat:@ "%@.wav" , [formatter stringfromdate:[nsdate date]]];
  nsstring *path = [[nssearchpathfordirectoriesindomains(nsdocumentdirectory, nsuserdomainmask, yes) lastobject] stringbyappendingpathcomponent:recordname];
 
  return path;
}
 
//时长长度转时间字符串
- (nsstring *)strwithtime:( double ) time interval:(cgfloat)interval
{
  int minute = ( time * interval) / 60;
  int second = ( int )( time * interval) % 60;
 
  return [nsstring stringwithformat:@ "%02d:%02d" , minute, second];
}
 
@end

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原文链接:https://blog.csdn.net/hero_wqb/article/details/76460663 。

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