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简单的音频播放

简单的音频播放

作者: Sh1mmer | 来源:发表于2021-02-01 14:15 被阅读0次

    AVAudioView.h

    #import <UIKit/UIKit.h>
#import "microphone.h"
NS_ASSUME_NONNULL_BEGIN

@interface AVAudioView : UIView
- (void)createPlayView;
@property (nonatomic) NSString *urlStr;

- (void)createVoiceView;
@end

    AVAudioView.m

    
#import "AVAudioView.h"
#import "MediaProgressBar.h"
@interface AVAudioView()
/**
 拖动进度条
 */
@property MediaProgressBar *slider;
@property UIButton *playBtn;
@property UILabel *durationTimeLabel;
@property BOOL hasDrag;
@property CMTime inTime;
@property UIImageView *voiceImageView;
@property microphone *voiceControll;
@end
@implementation AVAudioView

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
    // Drawing code
}
*/

- (instancetype)init{
    self = [super init];
    if (self) {
        self.voiceControll = [[microphone alloc] init];
    }
    return self;
}

- (instancetype)initWithFrame:(CGRect)frame{
    self = [super initWithFrame:frame];
    if (self) {
        self.voiceControll = [[microphone alloc] init];
    }
    return self;
}

- (void)setUrlStr:(NSString *)urlStr{
    _urlStr = urlStr;
    
    dispatch_async(dispatch_get_global_queue(0, 0), ^{
        self.voiceControll.urlStr = urlStr;
        
        dispatch_async(dispatch_get_main_queue(), ^{
            if (self.slider) {
              self.durationTimeLabel.text = [NSString stringWithFormat:@"%02ld:%02ld",(NSInteger)self.voiceControll.durationTime/60,(NSInteger)self.voiceControll.durationTime%60];
            }else{
                self.durationTimeLabel.text = [NSString stringWithFormat:@"%02ld″",(NSInteger)self.voiceControll.durationTime%60];
            }
        });
    });
    

    
}

- (void)createPlayView{
    self.userInteractionEnabled = YES;
    self.playBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    self.playBtn.layer.cornerRadius = 20;
    self.playBtn.frame = CGRectMake(20, self.frame.size.height/2-20, 40, 40);
    [self.playBtn addTarget:self action:@selector(playOrPauseVoice:) forControlEvents:UIControlEventTouchUpInside];
    self.playBtn.selected = YES;
    self.playBtn.backgroundColor = [UIColor blueColor];
    
//    [self.playBtn setBackgroundImage:[self OriginImageToSize:CGSizeMake(30, 30) color:[UIColor yellowColor] count:3] forState:UIControlStateNormal];
    
    [self addSubview:self.playBtn];
    
    self.slider = [[MediaProgressBar alloc] initWithFrame:CGRectMake(70, self.frame.size.height/2-10, self.frame.size.width-150, 20)];
    [self.slider setThumbSize:CGSizeMake(15, 15) andColor:[UIColor redColor]];
    __weak typeof(self)WeakSelf = self;
    self.voiceControll.playProgressBlock = ^(CGFloat progress,CGFloat nowTime) {
        if (WeakSelf.hasDrag == NO) {
            [UIView animateWithDuration:0.2 animations:^{
                
                [WeakSelf.slider setValue:progress animated:YES];
            }];
            
        }
        
        if (progress >=1||isnan(progress)) {
            [WeakSelf.slider setValue:0 animated:YES];
            WeakSelf.playBtn.backgroundColor = [UIColor blueColor];
            WeakSelf.playBtn.selected = !WeakSelf.playBtn.selected;
            WeakSelf.durationTimeLabel.text = [NSString stringWithFormat:@"%02ld:%02ld",(NSInteger)WeakSelf.voiceControll.durationTime/60,(NSInteger)WeakSelf.voiceControll.durationTime%60];
            NSString *tempStr = [NSString stringWithFormat:@"%02ld:%02ld",(NSInteger)WeakSelf.voiceControll.durationTime/60,(NSInteger)WeakSelf.voiceControll.durationTime%60];
            WeakSelf.durationTimeLabel.text = tempStr;
        }else{
            CGFloat leftTime = WeakSelf.voiceControll.durationTime-nowTime;
            WeakSelf.durationTimeLabel.text = [NSString stringWithFormat:@"%02ld:%02ld",(NSInteger)leftTime/60,(NSInteger)leftTime%60];
        }
    };
    [self.slider addTarget:self action:@selector(changedTime:forEvent:) forControlEvents: UIControlEventValueChanged];
    [self addSubview:self.slider];
    
    self.durationTimeLabel = [[UILabel alloc] initWithFrame:CGRectMake(self.frame.size.width-120, self.frame.size.height/2-20, 120, 40)];
    self.durationTimeLabel.textAlignment = NSTextAlignmentCenter;
    self.durationTimeLabel.font = [UIFont systemFontOfSize:12];
    [self addSubview:self.durationTimeLabel];
    
}

- (void)changedTime:(UISlider *)slider forEvent:(UIEvent*)event{
    
    UITouch*touchEvent = [[event allTouches]anyObject];
    switch(touchEvent.phase) {
        case UITouchPhaseBegan:
            NSLog(@"开始拖动");
            self.hasDrag = YES;
            break;
        case UITouchPhaseMoved:
            NSLog(@"正在拖动");
            break;
        case UITouchPhaseEnded:
            NSLog(@"结束拖动");
            NSLog(@"%f",slider.value);
            Float64 seconds = self.voiceControll.durationTime*slider.value;
            int32_t preferredTimeScale = 600;
            self.inTime = CMTimeMakeWithSeconds(seconds, preferredTimeScale);
            [self.voiceControll seekToTime:self.inTime];
            if (!self.playBtn.selected) {
                
                self.inTime = kCMTimeInvalid;
            }
            self.hasDrag = NO;
            break;
        default:
            break;
            
    }
    
}


- (void)changedTimeEnd:(UISlider *)slider forEvent:(UIEvent*)event{
    NSLog(@"离开");
}

- (void)playOrPauseVoice:(UIButton *)btn{
    if (btn.selected) {

        self.playBtn.backgroundColor = [UIColor redColor];
        [self.voiceControll playVoice:self.urlStr];
        if (CMTIME_IS_VALID(self.inTime)) {
            [self.voiceControll seekToTime:self.inTime];
            self.inTime = kCMTimeInvalid;
        }
    }else{
        self.playBtn.backgroundColor = [UIColor blueColor];
        [self.voiceControll pauseVoice];
    }
    btn.selected = !btn.selected;
    
}

- (void)createVoiceView{
    
    
    self.voiceImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)];
    self.voiceImageView.userInteractionEnabled = YES;
    self.voiceImageView.animationImages = @[[UIImage imageNamed:@"play_circle01@3x"],[UIImage imageNamed:@"play_circle02@3x"],[UIImage imageNamed:@"play_circle03@3x"]];
    self.voiceImageView.image = [UIImage imageNamed:@"play_circle03"];
    self.voiceImageView.animationDuration = 1;
    self.voiceImageView.animationRepeatCount = 0;
    [self addSubview:self.voiceImageView];
    
    
    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapAction:)];
    [self.voiceImageView addGestureRecognizer:tap];
    
    self.durationTimeLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, self.frame.size.width-40, self.frame.size.height)];
    self.durationTimeLabel.textAlignment = NSTextAlignmentCenter;
    self.durationTimeLabel.font = [UIFont systemFontOfSize:12];
    [self.voiceImageView addSubview:self.durationTimeLabel];
    __weak typeof(self)WeakSelf = self;
    self.voiceControll.playProgressBlock = ^(CGFloat progress, CGFloat nowTime) {
        NSLog(@"%f",progress);
        if (progress >=1) {
            [WeakSelf.voiceImageView stopAnimating];
        }
    };
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(changeVoice:) name:@"changeVoice" object:nil];
}

- (void)changeVoice:(NSNotification *)notificaiton{
    [self.voiceImageView stopAnimating];
}

- (void)tapAction:(UITapGestureRecognizer *)tap{
    NSLog(@"人生大");
    if ([self.voiceImageView isAnimating]) {
        [self.voiceImageView stopAnimating];
        [self.voiceControll pauseVoice];
        Float64 seconds = 0;
        int32_t preferredTimeScale = 600;
        [self.voiceControll seekToTime:CMTimeMakeWithSeconds(seconds, preferredTimeScale)];
    }else{
        [self.voiceControll playVoice:self.urlStr];
        [self.voiceImageView startAnimating];
    }
    
    [[self getControllerFromView:self] viewWillDisappear:YES];
}

- (void)dealloc
{
    [[NSNotificationCenter defaultCenter] removeObserver:@"changeVoice"];
    [self.voiceControll pauseVoice];
}
- (UIViewController *)getControllerFromView:(UIView *)view {
    // 遍历响应者链。返回第一个找到视图控制器
    UIResponder *responder = view;
    while ((responder = [responder nextResponder])){
        if ([responder isKindOfClass: [UIViewController class]]){
            return (UIViewController *)responder;
        }
    }
    // 如果没有找到则返回nil
    return nil;
}
 
@end

    microphone.h

    #import <Foundation/Foundation.h>
#import <AVFoundation/AVFoundation.h>
#import "lame.h"
#import "PlayerShare.h"
NS_ASSUME_NONNULL_BEGIN
typedef void(^PlayProgressBlock)(CGFloat progress,CGFloat nowTime);
@interface microphone : NSObject
//+(microphone *)shareMicrophone;

/** 录音对象 */
@property (nonatomic,strong) AVAudioRecorder * recoder;
/** 音频文件地址 */
@property (nonatomic,strong) NSURL * url;
/** 音频播放器 */
@property (nonatomic,strong) AVAudioPlayer * audioPlayer;
/** 录音文件路径 */
@property (nonatomic,strong) NSString * recordeFilePath;

/**
 转换的Mp3文件地址
 */
@property (nonatomic,strong) NSURL * mp3Url;


- (void)stardRecord;

- (NSURL *)stopRecord;

- (void)cancelRecord;

- (void)playSound:(NSURL *)fileURL;
- (void)pauseVoice;

@property PlayProgressBlock playProgressBlock;

/**
 网络音频地址
 */
@property (nonatomic) NSString *urlStr;
/**
 音频总时长
 */
@property CGFloat durationTime;

/**
 播放音频

 @param fileURL url
 */
- (void)playVoice:(NSString *)fileURL;
/**
 跳转到指定时间

 @param time time
 */
- (void)seekToTime:(CMTime)time;
@end

NS_ASSUME_NONNULL_END

    .m

    #import "microphone.h"

@interface microphone()

@end

@implementation microphone
//+ (microphone *)shareMicrophone{
//    static microphone *single = nil;
//    static dispatch_once_t takeOnce;
//    dispatch_once(&takeOnce, ^{
//        single = [[microphone alloc] init];
//    });
//    return single;
//}
- (void)setUrlStr:(NSString *)urlStr{
    _urlStr = urlStr;
    AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:[NSURL URLWithString:urlStr] options:nil];
    AVPlayerItem *songitem = [[AVPlayerItem alloc] initWithAsset:asset];
    CMTime duration = songitem.asset.duration;
    float seconds = CMTimeGetSeconds(duration);
    NSLog(@"duration: %.2f", seconds);
    self.durationTime = seconds;
}

- (void)playVoice:(NSString *)fileURL{
    if ([fileURL isEqualToString: [((AVURLAsset *)[PlayerShare sharePlayerShare].player.currentItem.asset).URL absoluteString]]) {
        [[PlayerShare sharePlayerShare].player play];
    }else{
        
        [[NSNotificationCenter defaultCenter] postNotificationName:@"changeVoice" object:nil userInfo:nil];
        AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:[NSURL URLWithString:fileURL] options:nil];
        AVPlayerItem *songitem = [[AVPlayerItem alloc] initWithAsset:asset];
        [PlayerShare sharePlayerShare].player = [[AVPlayer alloc] initWithPlayerItem:songitem];
        [PlayerShare sharePlayerShare].player.automaticallyWaitsToMinimizeStalling = NO;
        CMTime duration = [PlayerShare sharePlayerShare].player.currentItem.asset.duration;
        float seconds = CMTimeGetSeconds(duration);
        NSLog(@"duration: %.2f", seconds);
        [songitem addObserver:self forKeyPath:@"status" options:NSKeyValueObservingOptionNew context:nil];
    }
    
}
- (void)pauseVoice{
    [[PlayerShare sharePlayerShare].player pause];
    
}

- (void)seekToTime:(CMTime)time{
    [[PlayerShare sharePlayerShare].player seekToTime:time];
}

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSKeyValueChangeKey,id> *)change context:(void *)context {
    if ([keyPath isEqualToString:@"status"]) {
        AVPlayerItem *item = (AVPlayerItem *)object;
        //AVPlayerItemStatus *status = item.status;
        NSLog(@"hahahha%@",[PlayerShare sharePlayerShare].player.error);
        if (item.status == AVPlayerItemStatusReadyToPlay) {
            [[PlayerShare sharePlayerShare].player play];
            //对播放界面的一些操作，时间、进度等
            __weak typeof(self)WeakSelf = self;
            [[PlayerShare sharePlayerShare].player addPeriodicTimeObserverForInterval:CMTimeMakeWithSeconds(0.2,NSEC_PER_SEC) queue:NULL usingBlock:^(CMTime time) {
                CGFloat progress = (CMTimeGetSeconds([PlayerShare sharePlayerShare].player.currentItem.currentTime) + 0.2) / CMTimeGetSeconds([PlayerShare sharePlayerShare].player.currentItem.duration);
                //在这里截取播放进度并处理
                if (WeakSelf.playProgressBlock) {
                    WeakSelf.playProgressBlock(progress,CMTimeGetSeconds([PlayerShare sharePlayerShare].player.currentItem.currentTime));
                }
                if (progress >= 1.0f) {
                    [PlayerShare sharePlayerShare].player = [[AVPlayer alloc] init];
                }
            }];
        }
    }
}

- (void)playSound:(NSURL *)fileURL {
    
    AVAudioSession *audioSession = [AVAudioSession sharedInstance];
    [audioSession setCategory:AVAudioSessionCategoryPlayback error:nil];
    [audioSession setActive:YES error:nil];
    NSError * error = nil;
    self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:fileURL error:&error];
    [self.audioPlayer play];
}



- (BOOL)convertToMp3
{
    NSString *fileName = [NSString stringWithFormat:@"/%@.mp3", @"test"];
    NSString *filePath = [[NSHomeDirectory() stringByAppendingFormat:@"/Documents/"] stringByAppendingPathComponent:fileName];
    NSLog(@"%@",filePath);
    _mp3Url = [NSURL URLWithString:filePath];
    
    @try {
        int read,write;
        //只读方式打开被转换音频文件
        FILE *pcm = fopen([self.recordeFilePath cStringUsingEncoding:1], "rb");
        fseek(pcm, 4 * 1024, SEEK_CUR);//删除头，否则在前一秒钟会有杂音
        //只写方式打开生成的MP3文件
        FILE *mp3 = fopen([filePath cStringUsingEncoding:1], "wb");
        
        const int PCM_SIZE = 8192;
        const int MP3_SIZE = 8192;
        short int pcm_buffer[PCM_SIZE * 2];
        unsigned char mp3_buffer[MP3_SIZE];
        //这里要注意，lame的配置要跟AVAudioRecorder的配置一致，否则会造成转换不成功
        lame_t lame = lame_init();
        lame_set_in_samplerate(lame, 11025.0);//采样率
        lame_set_VBR(lame, vbr_default);
        lame_init_params(lame);
        
        do {
            
            //以二进制形式读取文件中的数据
            read = (int)fread(pcm_buffer, 2 * sizeof(short int), PCM_SIZE, pcm);
            if (read == 0)
                write = lame_encode_flush(lame, mp3_buffer, MP3_SIZE);
            else
                write = lame_encode_buffer_interleaved(lame, pcm_buffer, read, mp3_buffer, MP3_SIZE);
            
            //二进制形式写数据到文件中  mp3_buffer：数据输出到文件的缓冲区首地址  write：一个数据块的字节数  1:指定一次输出数据块的个数   mp3:文件指针
            fwrite(mp3_buffer, write, 1, mp3);
            
        } while (read != 0);
        
        lame_close(lame);
        fclose(mp3);
        fclose(pcm);
        
    } @catch (NSException *exception) {
        NSLog(@"%@",[exception description]);
        return  NO;
    } @finally {
        NSLog(@"MP3生成成功!!!");
        return YES;
    }
}

- (AVAudioRecorder *)recoder{
    if (!_recoder) {
        
        //存放录音文件的地址
        NSString * path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
        NSString * filePath = [path stringByAppendingPathComponent:@"temp.caf"];
        NSLog(@"%@",filePath);
        self.recordeFilePath = filePath;
        NSURL * url = [NSURL URLWithString:filePath];
        self.url = url;
        
        //录音设置
        NSMutableDictionary *recordSettings = [[NSMutableDictionary alloc] init];
        //设置录音格式
        [recordSettings setValue :[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey: AVFormatIDKey];
        //采样率 采样率必须要设为11025才能使转化成mp3格式后不会失真
        [recordSettings setValue :[NSNumber numberWithFloat:11025.0] forKey: AVSampleRateKey];//44100.0
        //通道数要转换成MP3格式必须为双通道
        [recordSettings setValue :[NSNumber numberWithInt:2] forKey: AVNumberOfChannelsKey];
        
        //音频质量,采样质量
        [recordSettings setValue:[NSNumber numberWithInt:AVAudioQualityMin] forKey:AVEncoderAudioQualityKey];
        
        //创建录音对象
        _recoder = [[AVAudioRecorder alloc] initWithURL:url settings:recordSettings error:nil];
        
        [_recoder prepareToRecord];
    }
    
    return _recoder;
}

- (void)stardRecord{
    [self.recoder record];
}

- (NSURL *)stopRecord{
    [self.recoder stop];
    
    if ([self convertToMp3]) {
        return self.mp3Url;
    }else{
        return nil;
    }
}

- (void)cancelRecord{
    [self.recoder deleteRecording];
}

@end

    MediaProgressBar.h

    #import <UIKit/UIKit.h>

@interface MediaProgressBar : UISlider
- (void)setThumbSize:(CGSize)size andColor:(UIColor *)color;
@end

    .m

    
#import "MediaProgressBar.h"

@implementation MediaProgressBar

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
    // Drawing code
}
*/
- (CGRect)trackRectForBounds:(CGRect)bounds{
//    [self setThumbImage:[self OriginImageToSize:CGSizeMake(bounds.size.height/2, bounds.size.height/2)] forState:UIControlStateNormal];
    return CGRectMake(0, bounds.size.height/2-1.5, bounds.size.width, 3);
}

-(UIImage*) OriginImageToSize:(CGSize)size color:(UIColor *)color{
    UIGraphicsBeginImageContextWithOptions(size, NO, 0);
    //从图形上下文获取图片
    CGContextRef context = UIGraphicsGetCurrentContext();//填充圆，无边框
    CGContextSetFillColorWithColor(context, [UIColor redColor].CGColor);//填充颜色
    CGContextAddArc(context, size.width/2, size.width/2, size.width/2, 0, 2*M_PI, 0); //添加一个圆
    CGContextDrawPath(context, kCGPathFill);//绘制填充
    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
    //关闭图形上下文
    UIGraphicsEndImageContext();
    return newImage;
}


- (void)setThumbSize:(CGSize)size andColor:(UIColor *)color{
    [self setThumbImage:[self OriginImageToSize:size color:color] forState:UIControlStateNormal];
}
@end
#d

    PlayerShare文件就是一个单例
    PlayerShare.h

    #import <Foundation/Foundation.h>
#import <AVFoundation/AVFoundation.h>
NS_ASSUME_NONNULL_BEGIN

@interface PlayerShare : NSObject
+ (PlayerShare *)sharePlayerShare;

@property AVPlayer *player;
@end

NS_ASSUME_NONNULL_END

    PlayerShare.m

    #import "PlayerShare.h"

@implementation PlayerShare
+ (PlayerShare *)sharePlayerShare{
    static PlayerShare *single = nil;
    static dispatch_once_t takeOnce;
    dispatch_once(&takeOnce,^{
        single = [[PlayerShare alloc]init];
    });
    return single;
}
@end

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