OC AVAudioRecorder、AVAudioSession和AVAudioPlayer的使用
音頻錄製須要的權限，須要在plist文件中設置：Privacy - Microphone Usage Descriptionios
AVAudioRecorder視頻錄製，AVAudioPlayer視頻播放，AVAudioSession咱們也是須要了解的，經過它能夠實現對App當前上下文音頻資源的控制，好比插拔耳機、接電話、是否和其餘音頻數據混音等，常常咱們遇到的一些問題登陸，若是有問題，或者又補充，能夠聯繫我，應該經常使用的轉態我都覆蓋了的macos
#import <AVFoundation/AVFoundation.h>
#import <Masonry.h>
@interface AVAudioVC ()<AVAudioRecorderDelegate>
@property(nonatomic,strong)AVAudioRecorder *audioRecorder;//音頻錄製
@property(nonatomic,strong)UIButton *audioRecorderBeginBtn;//音頻錄製開始
@property(nonatomic,strong)UIButton *audioRecorderPauseBtn;//暫停錄音
@property(nonatomic,strong)UIButton *audioRecorderStopBtn;//音頻中止錄製
/**AVAudioSession 咱們也是須要了解的，經過它能夠實現對App當前上下文音頻資源的控制，好比插拔耳機、接電話、是否和其餘音頻數據混音等，常常咱們遇到的一些問題，好比下面的這些：
一、是進行錄音仍是播放？
二、當系統靜音鍵按下時該如何表現？
三、是從揚聲器仍是從聽筒裏面播放聲音？
四、插拔耳機後如何表現？
五、來電話/鬧鐘響了後如何表現？
六、其餘音頻App啓動後如何表現？*/
@property (nonatomic, strong) AVAudioSession *session;
@property (nonatomic, strong) AVAudioPlayer *player; //播放器
@end
@implementation AVAudioVC
-(AVAudioSession *)session{
if(!_session){
//AVAudioSession是一個單例 實例化
_session =[AVAudioSession sharedInstance];
NSError *sessionError;
if (_session == nil) {
NSLog(@"Error creating session: %@",[sessionError description]);
}else{
//激活session
[_session setActive:YES error:nil];
}
}
return _session;
}
- (void)viewDidLoad {
[super viewDidLoad];
[self setView];
//設備改變
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleRouteChange:) name:AVAudioSessionRouteChangeNotification object:[AVAudioSession sharedInstance]];
//當前的流程被中斷了
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(audioInterruption:) name:AVAudioSessionInterruptionNotification object:[AVAudioSession sharedInstance]];
}
//拔出耳機等
- (void)handleRouteChange:(NSNotification *)noti {
NSDictionary *info = noti.userInfo;
AVAudioSessionRouteChangeReason reason = [info[AVAudioSessionRouteChangeReasonKey] unsignedIntegerValue];
/**
AVAudioSessionRouteChangeReasonUnknown :未知緣由
AVAudioSessionRouteChangeReasonNewDeviceAvailable ：有新設備可用
AVAudioSessionRouteChangeReasonOldDeviceUnavailable :老設備不可用
AVAudioSessionRouteChangeReasonCategoryChange :類別變了
AVAudioSessionRouteChangeReasonOverride ：app重置了輸出設置
AVAudioSessionRouteChangeReasonWakeFromSleep ：從睡眠轉態呼醒
AVAudioSessionRouteChangeReasonNoSuitableRouteForCategory :當前的category下沒有合適的設備
AVAudioSessionRouteChangeReasonRouteConfigurationChange ：router的配置改變了
*/
//舊音頻設備斷開
if (reason == AVAudioSessionRouteChangeReasonOldDeviceUnavailable) {
//獲取上一線路描述信息並獲取上一線路的輸出設備類型
AVAudioSessionRouteDescription *previousRoute = info[AVAudioSessionRouteChangePreviousRouteKey];
AVAudioSessionPortDescription *previousOutput = previousRoute.outputs[0];
NSString *portType = previousOutput.portType;
if ([portType isEqualToString:AVAudioSessionPortHeadphones]) {
//在這裏暫停播放
}
}
}
/*監聽系統中斷音頻播放
來電暫停
QQ 微信語音暫停
其餘音樂軟件佔用
*/
- (void)audioInterruption:(NSNotification *)noti {
NSDictionary *info = noti.userInfo;
AVAudioSessionInterruptionType type = [info[AVAudioSessionInterruptionTypeKey] unsignedIntegerValue];
if (type == AVAudioSessionInterruptionTypeBegan) {
//表示中斷開始，咱們應該暫停播放和採集，取值爲AVAudioSessionInterruptionTypeEnded表示中斷結束，咱們能夠繼續播放和採集。
} else {
//當前只有一種值AVAudioSessionInterruptionOptionShouldResume表示此時也應該恢復繼續播放和採集。
AVAudioSessionInterruptionOptions options = [info[AVAudioSessionInterruptionOptionKey] unsignedIntegerValue];
if (options == AVAudioSessionInterruptionOptionShouldResume) {
}
}
}
/**
全部的控件初始化
*/
-(void)setView{
//音頻錄製
UIView *audioRecorderView = [UIView new];
audioRecorderView.layer.cornerRadius = 5.0f;
audioRecorderView.layer.borderColor = [UIColor blackColor].CGColor;
audioRecorderView.layer.borderWidth = 1.0f;
[self.view addSubview:audioRecorderView];
audioRecorderView.backgroundColor = [UIColor redColor];
[audioRecorderView mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.offset(90);
make.left.offset(12);
make.right.offset(-12);
make.height.offset(74);
}];
UILabel *audioRecorderTitleLab = [UILabel new];
audioRecorderTitleLab.text = @"音頻錄製";
[audioRecorderView addSubview:audioRecorderTitleLab];
[audioRecorderTitleLab mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.offset(12);
make.height.offset(30);
}];
self.audioRecorderBeginBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[self.audioRecorderBeginBtn setTitle:@"開始" forState:UIControlStateNormal];
[self.audioRecorderBeginBtn addTarget:self action:@selector(audioRecorderBeginBtnClick) forControlEvents:UIControlEventTouchUpInside];
[audioRecorderView addSubview:self.audioRecorderBeginBtn];
[self.audioRecorderBeginBtn mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(audioRecorderTitleLab.mas_bottom);
make.left.offset(12);
make.bottom.offset(0);
make.width.offset(80);
}];
self.audioRecorderPauseBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[self.audioRecorderPauseBtn setTitle:@"暫停" forState:UIControlStateNormal];
[self.audioRecorderPauseBtn setTitle:@"開始" forState:UIControlStateSelected];
[self.audioRecorderPauseBtn addTarget:self action:@selector(audioRecorderPauseBtnClick) forControlEvents:UIControlEventTouchUpInside];
[audioRecorderView addSubview:self.audioRecorderPauseBtn];
[self.audioRecorderPauseBtn mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(self.audioRecorderBeginBtn.mas_right).offset(12);
make.size.equalTo(self.audioRecorderBeginBtn);
make.bottom.equalTo(self.audioRecorderBeginBtn.mas_bottom);
}];
self.audioRecorderStopBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[self.audioRecorderStopBtn setTitle:@"中止" forState:UIControlStateNormal];
[self.audioRecorderStopBtn addTarget:self action:@selector(audioRecorderStopBtnClick) forControlEvents:UIControlEventTouchUpInside];
[audioRecorderView addSubview:self.audioRecorderStopBtn];
[self.audioRecorderStopBtn mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(self.audioRecorderPauseBtn.mas_right).offset(12);
make.size.equalTo(self.audioRecorderBeginBtn);
make.bottom.equalTo(self.audioRecorderBeginBtn.mas_bottom);
}];
//音頻播放
}
/**
錄音開始
*/
-(void)audioRecorderBeginBtnClick{
/**
一下是兩個初始化的方法，兩個方法差很少，NSDictionary是配置信息
- (nullable instancetype)initWithURL:(NSURL *)url settings:(NSDictionary<NSString *, id> *)settings error:(NSError **)outError;
- (nullable instancetype)initWithURL:(NSURL *)url format:(AVAudioFormat *)format error:(NSError **)outError API_AVAILABLE(macos(10.12), ios(10.0), watchos(4.0)) API_UNAVAILABLE(tvos);
準備開始錄音
- (BOOL)prepareToPlay;
暫停錄音
- (void)pause;
中止錄音
- (void)stop;
*/
if(self.audioRecorderBeginBtn.selected){
//已經開始了
NSLog(@"-------------------------------錄音已經開始了，不須要重複錄製");
}else{
/**
設置session屬性
AVAudioSessionCategoryAmbient： 當用戶鎖屏或者靜音的時候靜音，支持混音，只支持播放
AVAudioSessionCategorySoloAmbient： 當用戶鎖屏或者靜音的時候靜音，不支持混音，只支持播放
AVAudioSessionCategoryPlayback： 當用戶鎖屏或者靜音的時候不靜音，不支持混音，只支持播放
AVAudioSessionCategoryRecord ：當用戶鎖屏或者靜音的時候不靜音，不支持混音，只支持錄音
AVAudioSessionCategoryPlayAndRecord：當用戶鎖屏或者靜音的時候不靜音，支持混音，能夠錄音和播放
AVAudioSessionCategoryAudioProcessing：都不支持
AVAudioSessionCategoryMultiRoute：當用戶鎖屏或者靜音的時候不靜音，不支持混音，能夠錄音和播放
*/
[self.session setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
//開始
self.audioRecorder = [[AVAudioRecorder alloc]initWithURL:[self getSavePath] settings:[self getAudioSetting] error:nil];
self.audioRecorder.delegate = self;
// self.audioRecorder.meteringEnabled = YES;//開啓音頻測量
[self.audioRecorder prepareToRecord];//
[self.audioRecorder record];
//
[self.audioRecorder updateMeters];
[self.audioRecorder averagePowerForChannel:0];//指定頻道分貝值
[self.audioRecorder peakPowerForChannel:0];//平均分貝值
NSLog(@"-------------------------------錄音已經開始了 %@",self.audioRecorder);
}
self.audioRecorderBeginBtn.selected = YES;
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
NSLog(@"isRecording:1----------------------------------------:%d",self.audioRecorder.isRecording);
});
}
/*
音頻的存儲url
*/
-(NSURL *)getSavePath{
NSString *urlStr=[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
urlStr = [urlStr stringByAppendingPathComponent:@"myRecord.caf"];
NSLog(@"file path:%@",urlStr);
NSURL *url=[NSURL fileURLWithPath:urlStr];
return url;
}
/*
@return 錄音設置
*/
-(NSDictionary *)getAudioSetting{
NSMutableDictionary *dicM=[NSMutableDictionary dictionary];
//設置錄音格式
[dicM setObject:@(kAudioFormatLinearPCM) forKey:AVFormatIDKey];
//設置錄音採樣率，8000是電話採樣率，對於通常錄音已經夠了
[dicM setObject:@(8000) forKey:AVSampleRateKey];
//設置通道,這裏採用單聲道
[dicM setObject:@(1) forKey:AVNumberOfChannelsKey];
//每一個採樣點位數,分爲八、1六、2四、32
[dicM setObject:@(8) forKey:AVLinearPCMBitDepthKey];
//是否使用浮點數採樣
[dicM setObject:@(YES) forKey:AVLinearPCMIsFloatKey];
//錄音質量
[dicM setObject:[NSNumber numberWithInt:AVAudioQualityHigh] forKey:AVEncoderAudioQualityKey];
//....其餘設置等
return dicM;
}
/**
錄音暫停
*/
-(void)audioRecorderPauseBtnClick{
if(!self.audioRecorder ){
return;
}
if(self.audioRecorderPauseBtn.selected){
//錄音音頻開始
[self.audioRecorder record];
}else{
//錄音音頻暫停
[self.audioRecorder pause];
}
self.audioRecorderPauseBtn.selected = !self.audioRecorderPauseBtn.selected;
}
/**
音頻中止錄製
*/
-(void)audioRecorderStopBtnClick{
//是否還在錄
[self.audioRecorder stop];
self.audioRecorderBeginBtn.selected = NO;
}
#pragma mark AVAudioRecorderDelegate
/* audioRecorderDidFinishRecording:successfully: is called when a recording has been finished or stopped. This method is NOT called if the recorder is stopped due to an interruption. */
- (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag{
//錄音完成
NSLog(@"--------------:錄音完成");
// AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc]initWithContentsOfURL:[self getSavePath] error:nil];
// if ([audioPlayer prepareToPlay] == YES &&
// [audioPlayer play] == YES) {
// NSLog(@"--------------------------------:開始播放");
// }else{
// NSLog(@"--------------------------------:失敗");
// }
}
/* if an error occurs while encoding it will be reported to the delegate. */
- (void)audioRecorderEncodeErrorDidOccur:(AVAudioRecorder *)recorder error:(NSError * __nullable)error{
NSLog(@"--------------:錄音編碼發生錯誤");
}
/**
音頻播放
*/
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
[self.audioRecorder stop];
self.player = [[AVAudioPlayer alloc] initWithContentsOfURL:[self getSavePath] error:nil];
// NSLog(@"%li",self.player.data.length/1024);
[self.session setCategory:AVAudioSessionCategoryPlayback error:nil];
if([self.player prepareToPlay] == YES && [self.player play] == YES){
NSLog(@"-------------------:播放");
}else{
NSLog(@"-------------------:中止");
}
}
-(void)dealloc{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
@end
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相關文章
- 1. 使用AVAudioRecorder錄製音頻
- 2. AVAudioSession 的 AVAudioSessionCategory 和 AVAudioSessionCategoryOptions 相關
- 3. swift 錄音 AVAudioRecorder
- 4. IOS開發之AVAudioPlayer的基本使用
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