RtAudio或PortAudio，使用哪一个？

Question

我正在考虑为一个需要实时音频和midi处理的新项目使用RTAudio + RTMidi和PortAudio + PortMidi。有使用这两个库经验的人能推荐其中一个吗？为什么？与C应用程序接口相比，我更喜欢C++应用程序接口，但这还不足以让我做出决定。

Answer 1

很长一段时间以来，我一直在锁定与那个需求的完美匹配。现在我更喜欢

• 端口音频：

- (+) on Windows, supports asio, DirectSound, MME, WASAPI (with header headaches)
- (+) on Linux, supports ALSA, OSS, Pulse, JACK
- (+) on Mac, supports Core Audio
- (+) very active project,and some good gurus are developing it).
- (+) used by many very successful apps + the C++ is not native but there is a binding that is integrated to the main branch (since last year i think)
- (+) It's really reliable with libsdnfile (which is great)
- (-) It's not native c++
- (-) the projects, configure, integration is pretty annoying
- (-) working well for multiple platforms (debian, osx, seven : my own experience)
- (-) much of the documentation sucks and is mostly outdated and contradictory when googling for answers

​

• rt audio

- (+) on Windows, supports asio, DirectSound, WASAPI (as of 10-04-2014)
- (+) on Linux, supports ALSA, OSS, Pulse, JACK
- (+) on Mac, supports Core Audio
- (+) native c++, 
- (+) really easy to get into it
- (-) not so much active
- (-) much of the documentation sucks and is mostly outdated and contradictory  when googling for answers

​

其他解决方案：

• Qt :

- (-) heavy, not exactly what i'm looking for
- (-) real time audio support is recent and not stable
- (+) easy to use if you use QtCreator (and less if using QtAddon with visual, and less with xcode)
- (+) midi integrated

​

• Juce:

- java like design
- heavy, not exactly what i'm looking for
- simple, and working pretty well (used professional audio)
- midi integrated, file reading of aiff and wave, and flac

​

Answer 2

这里有一个出现在Linux音频开发列表上的相关线程。对于我的新应用程序，我将采取的方法是为jack编写代码，并在linux+jack中进行所有调试，然后将RTAudio用于我最终发布的端口。

干杯！

Getting jack sample rate and buffersize with portaudio

Answer 3

PortAudio Java绑定过于简单。例如，你不能为设备访问设置独占模式或共享模式，这是一种遗憾，因为它有效地减少了7毫秒的延迟--特别是如果你在Windows 10下捕获麦克风输入(通常不需要共享访问)。如果你把输出计算在内，你就失去了14毫秒的RTT来监控你的麦克风/东西。

RtAudio现在似乎支持WASAPI，但我不确定它是否比PortAudio更好。在问题中没有被问到，我知道，但仍然... :)

另一个相当新的项目是XtAudio。它将对设备的独占和共享访问作为不同的设备集暴露到前端，并且通常看起来有更好的API支持。我不认为它支持MIDI tho。