ios 录音 音频转换
//语音文件
AVAudioRecorder*recorder;
NSTimer*timer;
NSString*urlPlay;
BOOLisPlay;
#pragma mark ========= 语音文件 ==========
- (void)audio
{
AVAudioSession*a=[AVAudioSessionsharedInstance];
[asetCategory:AVAudioSessionCategoryPlayAndRecorderror:nil];
[asetActive:YESerror:nil];
//录音设置
NSMutableDictionary*recordSetting = [[NSMutableDictionaryalloc]init];
//录音格式 无法使用
[recordSetting setValue :[NSNumbernumberWithInt:kAudioFormatLinearPCM]forKey:AVFormatIDKey];
//采样率
[recordSetting setValue :[NSNumbernumberWithFloat:44100]forKey:AVSampleRateKey];//44100.0
//通道数
[recordSetting setValue :[NSNumbernumberWithInt:2]forKey:AVNumberOfChannelsKey];
//线性采样位数
[recordSetting setValue :[NSNumbernumberWithInt:16]forKey:AVLinearPCMBitDepthKey];
//音频质量,采样质量
[recordSettingsetValue:[NSNumbernumberWithInt:AVAudioQualityMin]forKey:AVEncoderAudioQualityKey];
NSString*strUrl = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES)lastObject];
urlPlay = [NSStringstringWithFormat:@"%@/lll.lpcm",strUrl];
NSError*error;
//初始化
recorder = [[AVAudioRecorderalloc]initWithURL:[NSURLURLWithString:urlPlay]settings:recordSettingerror:&error];
//开启音量检测
recorder.meteringEnabled=YES;
recorder.delegate=self;
}
//开始录音
- (IBAction)speak_touchDown:(id)sender {
if(isPlay==NO){
_speakBackView.frame=CGRectMake(ScreenWidth/2-75,ScreenHeight/2-130,150,150);
_speakBackView.backgroundColor=[UIColorcolorWithWhite:0.000alpha:0.6];
_speakBackView.layer.cornerRadius=10;
_speakBackView.clipsToBounds=YES;
[self.viewaddSubview:_speakBackView];
//创建录音文件，准备录音
if([recorderprepareToRecord]) {
//开始
[recorderrecord];
}
//设置定时检测
timer = [NSTimerscheduledTimerWithTimeInterval:0target:selfselector:@selector(detectionVoice)userInfo:nilrepeats:YES];
}
}
//拖动取消录音
- (IBAction)speak_drag:(id)sender {
if(isPlay==NO){
[_speakBackViewremoveFromSuperview];
//删除录制文件
[recorderdeleteRecording];
[recorderstop];
[timerinvalidate];
}
}
//录音完成
- (IBAction)speak_touchUpinset:(id)sender {
[timerinvalidate];
if(isPlay==NO) {
[_speakBackViewremoveFromSuperview];
doublecTime = recorder.currentTime;
if(cTime >1) {//如果录制时间<2 不发送
NSLog(@"发出去");
//显示录音时间
[_btn_speaksetTitle:[NSStringstringWithFormat:@"%.1lf\"播放",cTime]forState:UIControlStateNormal];
//录音时候的标志
UIImage*image=[UIImageimageNamed:@"speak_read"];
image=[imageimageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
[_btn_speaksetImage:imageforState:UIControlStateNormal];
_btn_cancelSpeak.hidden=NO;
isPlay=YES;
//新开线程进行解码
[NSThreaddetachNewThreadSelector:@selector(audio_PCMtoMP3)toTarget:selfwithObject:nil];
}else{
//删除记录的文件
[recorderdeleteRecording];
}
[recorderstop];
}
//点击时候播放与暂停
else{
if(self.avPlay.playing) {
[_btn_speaksetTitle:[NSStringstringWithFormat:@"%.1lf\"播放",_avPlay.duration]forState:UIControlStateNormal];
[self.avPlaystop];
return;
}
[_btn_speaksetTitle:@"暂停"forState:UIControlStateNormal];
AVAudioPlayer*player = [[AVAudioPlayeralloc]initWithContentsOfURL:[NSURLURLWithString:urlPlay]error:nil];
self.avPlay= player;
self.avPlay.delegate=self;
[self.avPlayprepareToPlay];
[self.avPlayplay];
NSLog(@"%f",_avPlay.duration);
}
}
//删除录音文件
- (IBAction)cancelSpeak:(id)sender {
[_avPlaystop];
_saveModel.speakUrl=nil;
[recorderdeleteRecording];
isPlay=NO;
_btn_cancelSpeak.hidden=YES;
[_btn_speaksetTitle:@"按住 说话"forState:UIControlStateNormal];
[_btn_speaksetImage:nilforState:UIControlStateNormal];
}
- (void)detectionVoice
{
[recorderupdateMeters];//刷新音量数据
//获取音量的平均值 [recorder averagePowerForChannel:0];
//音量的最大值 [recorder peakPowerForChannel:0];
doublelowPassResults = pow(10, (0.05* [recorderpeakPowerForChannel:0]));
NSLog(@"%lf",lowPassResults);
if(0
[_speak_iamgeVsetImage:[UIImageimageNamed:@"record_animate_01"]];
}elseif(0.125
[_speak_iamgeVsetImage:[UIImageimageNamed:@"record_animate_02"]];
}elseif(0.25
[_speak_iamgeVsetImage:[UIImageimageNamed:@"record_animate_03"]];
}elseif(0.375
[_speak_iamgeVsetImage:[UIImageimageNamed:@"record_animate_04"]];
}elseif(0.50
[_speak_iamgeVsetImage:[UIImageimageNamed:@"record_animate_05"]];
}elseif(0.625
[_speak_iamgeVsetImage:[UIImageimageNamed:@"record_animate_06"]];
}elseif(0.75
[_speak_iamgeVsetImage:[UIImageimageNamed:@"record_animate_07"]];
}else{
[_speak_iamgeVsetImage:[UIImageimageNamed:@"record_animate_08"]];
}
}
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer*)playersuccessfully:(BOOL)flag{
[_btn_speaksetTitle:[NSStringstringWithFormat:@"%.1lf\"播放",_avPlay.duration]forState:UIControlStateNormal];
}
#pragma mark ===== 转换成MP3文件=====
- (void)audio_PCMtoMP3
{
NSString*strUrl = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES)lastObject];
//NSString *mp3FileName = [strUrl lastPathComponent];
//mp3FileName = [mp3FileName stringByAppendingString:@".mp3"];
NSString*mp3FilePath = [strUrlstringByAppendingPathComponent:@"lll.mp3"];
@try{
intread, write;
FILEFILE*pcm = fopen([urlPlaycStringUsingEncoding:1],"rb");//source 被转换的音频文件位置
fseek(pcm,4*1024, SEEK_CUR);//skip file header
FILEFILE*mp3= fopen([mp3FilePathcStringUsingEncoding:1],"wb");//output 输出生成的Mp3文件位置
constintPCM_SIZE =8192;
constintMP3_SIZE =8192;
shortintpcm_buffer[PCM_SIZE*2];
unsignedcharmp3_buffer[MP3_SIZE];
lame_t lame = lame_init();
lame_set_in_samplerate(lame,44100);
lame_set_VBR(lame, vbr_default);
lame_init_params(lame);
do{
read = fread(pcm_buffer,2*sizeof(shortint), 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);
fwrite(mp3_buffer, write,1, mp3);
}while(read !=0);
lame_close(lame);
fclose(mp3);
fclose(pcm);
}
@catch(NSException*exception) {
NSLog(@"%@",[exceptiondescription]);
}
@finally{
strUrl = mp3FilePath;
_saveModel.speakUrl=[NSURLURLWithString:strUrl];
NSLog(@"MP3生成成功: %@",strUrl);
}
}
#pragma mark ========= 上传 ==========
[self.httpMgrPOST:@"http://xuyingtest.sinaapp.com/uploadfile.php"parameters:nilconstructingBodyWithBlock:^void(id formData) {
[formDataappendPartWithFileURL:self.audioReorder.urlname:@"file"error:nil];
}success:^void(AFHTTPRequestOperation* operation,idresponseObject) {
NSDictionary*dict=[NSJSONSerializationJSONObjectWithData:responseObjectoptions:NSJSONReadingAllowFragmentserror:nil];
if(dict[@"error"]) {
NSLog(@" up success error :%@",dict[@"error"]);
}
else
{
NSLog(@"upload file ok!:%@",dict[@"success"]);
}
}failure:^void(AFHTTPRequestOperation* operation,NSError* error) {
NSLog(@"%@",error.localizedDescription);
}];
