Cocos Creator 苹果 安卓 网页 三端语音互通看我的就够了

    Cocos Creator 有内置的语音, 既然可以实现为什么不能自己实现呢? 好吧,实现开始. 对比了三端语音的格式最后选定M4A格式的音频. 总体的思路是直接传文件流, 直接播放文件流, 而不进行保存下载, 跳过不必要的下载保存流程, 这样语音播放更加流畅. 亲测很快. 与实时音视频几乎没有差别. 
    具体怎么来实现呢. Creator跟iOS互相调用可以看我之前的这里就不多说, 直接主题录制视频 上代码

- (void)startRecord{
     NSString *path = [[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:@"text.caf"];
            NSURL *url = [NSURL URLWithString:path];
            // setting:录音的设置项
            NSDictionary *configDic = @{// 编码格式
                                        AVFormatIDKey:@(kAudioFormatLinearPCM),
                                        // 采样率
                                        AVSampleRateKey:@(8000),
                                        // 通道数
                                        AVNumberOfChannelsKey:@(1),
                                        // 录音质量
                                        AVEncoderAudioQualityKey:@(AVAudioQualityMin)
                                        };
            NSError *error = nil;
            [[AVAudioSession sharedInstance]
    //        在创建recorder之前加上这两行,可以解决播放无声音的问题

            setCategory:@"AVAudioSessionCategoryPlayAndRecord" error:nil];
            [[AVAudioSession sharedInstance] overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker error:nil];
            _record = [[AVAudioRecorder alloc]initWithURL:url settings:configDic error:&error];
            if (error) {
                NSLog(@"error:%@",error);
            }
            // 准备录音(系统会给我们分配一些资源)
            [_record prepareToRecord];
    [self.record record];
    NSLog(@"开始录音");

}

因为苹果录制的视频是caf格式, 所以需要对音频的格式进行转换,转换成M4A

- (NSString *)stopVideo{
    if (self.record.currentTime > 2) {
        [self.record stop];
    } else {
        // 删除录音文件
        //如果想要删除录音文件，必须先停止录音
        [self.record stop];
        [self.record deleteRecording];
    }
    NSLog(@"结束录音");

     NSString *pathuLu = [[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:@"text.caf"];
    
    NSString *path1 = [[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:@"aaaa.m4a"];

    [zhuanHuanM4a convetCafToM4a:pathuLu destUrl:path1 completed:^(NSError * _Nonnull error) {

         NSData *mp3Data = [NSData dataWithContentsOfFile:path1];

         NSString *data = [mp3Data base64Encoding];
        
        std::string strRet1 = [data UTF8String];
        
        
        std::string strRet = "onRecordFinish";
        

        std::string jsCallStr = cocos2d::StringUtils::format("native2Cocos(\"%s\",'%s');", strRet.c_str(),strRet1.c_str());
        
        se::Value *ret = new se::Value();
        se::ScriptEngine::getInstance()->evalString(jsCallStr.c_str() , -1 , ret);
        
        NSString *path = [[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:@"aaaa.m4a"];

           NSFileManager*fileManager = [NSFileManager defaultManager];

           [fileManager removeItemAtPath:path error:nil];

    }];
    

    return @"wait";
}

转换完成之后把文件流转成base64发给Creator
这样就完成了第一步, 把音频文件发给Creator. 然后经过Creator的广播把这段音频再分发给在这个房间的每一个人.

- (void)playVoiceData:(NSString *)data{
    
    // Base64形式的字符串为data
    NSData *videoMy = [[NSData alloc] initWithBase64EncodedString:data options:NSDataBase64DecodingIgnoreUnknownCharacters];
    
    AVAudioSession *audioSession = [AVAudioSession sharedInstance];
    //默认情况下扬声器播放
    [audioSession setCategory:AVAudioSessionCategoryPlayback error:nil];
    [audioSession setActive:YES error:nil];
    
     
    
    self.player = [[AVAudioPlayer alloc] initWithData:videoMy error:nil];
    self.player.numberOfLoops = 0;
    self.player.delegate = self;
    CGFloat currentVol = audioSession.outputVolume;
    //设置播放器声音
    
    self.player.volume = currentVol;
    [self.player play];
}
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
   std::string strRet = "onPlayFinish";
   

   std::string jsCallStr = cocos2d::StringUtils::format("native2Cocos(\"%s\");", strRet.c_str());
   
   se::Value *ret = new se::Value();
   se::ScriptEngine::getInstance()->evalString(jsCallStr.c_str() , -1 , ret);
}

最后调取播放音频的方法把Creator给你传的文件流播放就可以了.