说话样品不能播放从互联网加载的声音

问题描述

我想播放从互联网加载的声音文件，所以我试着从iPhone SDK SpeakHere示例开始。我录制的声音，然后保存并上传到互联网，我可以下载该文件，播放没有问题，从声音工具。但是当我试图从SpeakHere播放该URL时，我收到错误程序收到的信号：EXC_BAD_ACCESS。

跟踪之后，我发现在 - [AudioPlayer calculateSizesFor：] 中，它将 bufferByteSize 设置为一个巨大的数806128768，导致缓冲区分配失败。

这是因为

  AudioFileGetProperty（audioFileID，kAudioFilePropertyPacketSizeUpperBound，& propertySize，& maxPacketSize）; 
  

返回的 maxPacketSize 是806128768。 p>

我想知道如何让 AudioFileGetProperty 工作。

我的声音文件是，
，您可以右键点击并从中下载。

我使用这种方式在 - [AudioViewController playOrStop] 方法中设置URL：

  // AudioPlayer * thePlayer = [[AudioPlayer alloc] initWithURL：self.soundFileURL]; 
 AudioPlayer * thePlayer = [[AudioPlayer alloc] initWithURL：
 [NSURL URLWithString：@http://chineseresume.com/localbiz/uploads/myfilename_7_Recording.caf]]; 
  

欢迎任何建议。

解决方案

是的，您需要使用直接从互联网播放。

我发现AudioFileStreamExample示例有用，

  / Developer / Examples / CoreAudio / Services / AudioFileStreamExample / 
  

此外，Matt Gallagher有一篇文章，其中包含iPhone示例代码。我没有仔细看过它，但它似乎可能对你有帮助。

I'd like to play sound file which loaded from internet, so I tried to start from iPhone SDK SpeakHere sample. I recorded the sound, then saved and uploaded to the internet, I could download that file and play without problem from sound tools. But when I tried to play that URL from SpeakHere, I am getting error Program received signal: "EXC_BAD_ACCESS".

After trace around, I found that the in -[AudioPlayer calculateSizesFor:], it set bufferByteSize to a huge number 806128768, which caused buffer allocation failed.

And that because in

AudioFileGetProperty(audioFileID, kAudioFilePropertyPacketSizeUpperBound, &propertySize, &maxPacketSize);

The maxPacketSize returned is 806128768.

I am wondering how to make AudioFileGetProperty work.

My sound file is here, you could right-click and download from here.

I am using this way to set the URL in the -[AudioViewController playOrStop] method:

// AudioPlayer *thePlayer = [[AudioPlayer alloc] initWithURL: self.soundFileURL];
AudioPlayer *thePlayer = [[AudioPlayer alloc] initWithURL:
    [NSURL URLWithString: @"http://chineseresume.com/localbiz/uploads/myfilename_7_Recording.caf"]];

Any suggestion is highly welcome.

解决方案

Yes, you need to use Audio File Stream Services to play directly from the internet.

I found the "AudioFileStreamExample" example useful, which should be installed in

/Developer/Examples/CoreAudio/Services/AudioFileStreamExample/

Also, Matt Gallagher has an article called "Streaming and playing an MP3 stream" that includes iPhone example code. I haven't looked at it carefully, but it seems like it may be helpful to you.

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