EZAudio framework -"Error: Couldn't initialize output unit ('fmt?')"

Question

我正在使用 EZAudio 框架 (https://github.com/syedhali/EZAudio)，当我尝试使用自定义 AudioStreamBasicDescription 初始化我的输出时...

- (void)openMediaPlayer {
    // Initialize the EZOutput instance and assign it a delegate to provide the output audio data
    AudioStreamBasicDescription audioDesc;
    audioDesc.mFormatID = kAudioFormatLinearPCM;
    audioDesc.mSampleRate = 44100;
    audioDesc.mChannelsPerFrame = 2;
    audioDesc.mBytesPerFrame = 4;
    audioDesc.mFramesPerPacket = 1;
    audioDesc.mBytesPerPacket = 4;
    audioDesc.mBitsPerChannel = 16;
    audioDesc.mReserved = 0;
    self.output = [EZOutput outputWithDataSource:self withAudioStreamBasicDescription:audioDesc];
    self.currentAudioPieceIndex = 0;
}

我收到错误 "Error: Couldn't initialize output unit ('fmt?')"

这是什么意思？ AudioDesc 为 PCM 16 位立体声音频设置了合理的默认值。

更新：当我使用调试器时，我发现我正在获取 OSStatus 1718449215。

Answer 1

原来你要设置

audioDesc.mFormatFlags = kAudioFormatFlagIsPacked | kAudioFormatFlagIsSignedInteger;

当您的音频格式为 PCM 时。

EZAudio framework -"Error: Couldn't initialize output unit ('fmt?')"

EZAudio framework -"Error: Couldn't initialize output unit ('fmt?')"

objective-c

core-audio

ios

ezaudio