录音时如何将音频素材实时上传到服务器？基本上我的要求是录制时将卡片/数据包上传到音频剪辑.
我已经使用IQAudioRecorderController https://github.com/hackiftekhar/IQAudioRecorderController做了录音部分.它记录音频并保存到TemporaryDirectory.
我已经使用IQAudioRecorderController https://github.com/hackiftekhar/IQAudioRecorderController做了录音部分.它记录音频并保存到TemporaryDirectory.
我想知道如何上传实时而不保存音频剪辑.
这是录音部分
//Unique recording URL
Nsstring *fileName = [[nsprocessInfo processInfo] globallyUniqueString];
_recordingFilePath = [NstemporaryDirectory() stringByAppendingPathComponent:[Nsstring stringWithFormat:@"%@.m4a",fileName]];
// Initiate and prepare the recorder
_audioRecorder = [[AVAudioRecorder alloc] initWithURL:[NSURL fileURLWithPath:_recordingFilePath] settings:recordSetting error:nil];
_audioRecorder.delegate = self;
_audioRecorder.meteringEnabled = YES;
// Recording start
- (void)recordingButtonAction:(UIBarButtonItem *)item
{
if (_isRecording == NO)
{
_isRecording = YES;
//UI Update
{
[self showNavigationButton:NO];
_recordButton.tintColor = _recordingTintColor;
_playButton.enabled = NO;
_trashButton.enabled = NO;
}
/*
Create the recorder
*/
if ([[NSFileManager defaultManager] fileExistsAtPath:_recordingFilePath])
{
[[NSFileManager defaultManager] removeItemAtPath:_recordingFilePath error:nil];
}
_oldSessionCategory = [[AVAudioSession sharedInstance] category];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryRecord error:nil];
[_audioRecorder preparetoRecord];
[_audioRecorder record];
}
else
{
_isRecording = NO;
//UI Update
{
[self showNavigationButton:YES];
_recordButton.tintColor = _normalTintColor;
_playButton.enabled = YES;
_trashButton.enabled = YES;
}
[_audioRecorder stop];
[[AVAudioSession sharedInstance] setCategory:_oldSessionCategory error:nil];
}
}
// Recording done
-(void)doneAction:(UIBarButtonItem*)item
{
if ([self.delegate respondsToSelector:@selector(audioRecorderController:didFinishWithAudioAtPath:)])
{
IQAudioRecorderController *controller = (IQAudioRecorderController*)[self navigationController];
[self.delegate audioRecorderController:controller didFinishWithAudioAtPath:_recordingFilePath];
}
[self dismissViewControllerAnimated:YES completion:nil];
}
解决方法
有各种方法来解决这个问题,一种方法是创建自己的AudioGraph. AudioGraph可以从麦克风或文件抓取样本.然后,您进入输出单元,但安装回调以获取采样帧.然后,您可以将其推送到您的网络类,然后可以逐个上传数据包.
一个很好的例子,显示如何将这些捕获的数据包写入磁盘是AVCaptureAudioDataOutput.
在这个例子中,数据包是写入ExtAudioFileWriteAsync.您必须将其替换为您自己的上传到服务器的逻辑.请注意,虽然您可以轻松地做到这一点,但一个问题是这将给您原始的音频样本.如果您需要它们作为波形文件或类似的,您可能需要等到录制完成,因为文件的标题需要有关包含的音频样本的信息.