Question

我正在尝试编写一个播放实时处理音频的C ++程序。我决定使用RtAudio，但不能让测试程序播放音频。

我使用的是Mac OS X，因此我使用./configure --with-core和make进行了编译。在编译测试目录中的文件后，我运行./audioprobe以返回此列表。

Compiled APIs:
  OS-X Core Audio

Current API: OS-X Core Audio

Found 3 device(s) ...

Device Name = Apple Inc.: Built-in Microphone
Probe Status = Successful
Output Channels = 0
Input Channels = 2
Duplex Channels = 0
This is NOT the default output device.
This is NOT the default input device.
Natively supported data formats:
  32-bit float
Supported sample rates = 44100 48000 88200 96000 

Device Name = Apple Inc.: Built-in Input
Probe Status = Successful
Output Channels = 0
Input Channels = 2
Duplex Channels = 0
This is NOT the default output device.
This is the default input device.
Natively supported data formats:
  32-bit float
Supported sample rates = 44100 48000 88200 96000 

Device Name = Apple Inc.: Built-in Output
Probe Status = Successful
Output Channels = 2
Input Channels = 0
Duplex Channels = 0
This is the default output device.
This is NOT the default input device.
Natively supported data formats:
  32-bit float
Supported sample rates = 44100 48000 88200 96000

由于内置输出设备是索引2，然后我运行了./playsaw 2 44100 2，但发生了错误：

RtApiCore::probeDeviceOpen: system error (kAudioHardwareUnknownPropertyError)
    getting stream format for device (2).

如何解决这个问题？

Answer 1

你是狮友（10.7）吗？我看到同样的问题，在较旧的系统上（10.6.x）RtAudio对我来说很好。

也许你可以降级到RtAudio 4.0.6，这对我来说对Lion有用，但是仍然存在一个潜伏在设备名称中的错误，这些错误已经在4.0.8中得到修复。

使用RtAudio和Core-Audio，probeDeviceOpen函数失败

1 个答案: