使用ossaudiodev进行播放

发布于 2024-11-09 16:22:17 字数 882 浏览 0 评论 0原文

我正在尝试编写一个流音频客户端，我想使用 ossaudiodev 函数来帮助我在本地计算机上播放音频。不幸的是，每次尝试运行代码时我都会遇到异常：

Unhandled exception in thread started by <function audioplayer at 0x88e96f4>
Traceback (most recent call last):
  File "client.py", line 56, in audioplayer
    audio = ossaudiodev.open("/dev/audio", 'w')
IOError: [Errno 16] Device or resource busy: '/dev/audio'

这是我的代码。我认为很简单，但不确定如何释放 /dev/audio 资源。

def audioplayer():

    audio = ossaudiodev.open("/dev/audio", 'w')
    audio.setfmt(ossaudiodev.AFMT_MU_LAW)
    audio.channels(2)
    audio.speed(8000)

    packet = 0

    sleep(.20) # give it a little bit of time to fill ze buffers

    while (packets[packet] != "\0"):
        audio.write(packets[packet])
        packet += 1

这有什么技巧吗？

编辑：答案是显而易见且愚蠢的。我在运行代码时正在玩潘多拉，因此扬声器“忙着”这样做。谁能澄清为什么会这样吗？其他应用程序如何同时运行多个音频流，而我似乎不能？

原文

I'm trying to write a streaming audio client and I'd like to use ossaudiodev functions to help me play back the audio on my local machine. Unfortunately, I'm getting an exception every time I try to run my code:

Unhandled exception in thread started by <function audioplayer at 0x88e96f4>
Traceback (most recent call last):
  File "client.py", line 56, in audioplayer
    audio = ossaudiodev.open("/dev/audio", 'w')
IOError: [Errno 16] Device or resource busy: '/dev/audio'

Here's my code. Pretty simple methinks, but not sure how to free up the /dev/audio resource.

def audioplayer():

    audio = ossaudiodev.open("/dev/audio", 'w')
    audio.setfmt(ossaudiodev.AFMT_MU_LAW)
    audio.channels(2)
    audio.speed(8000)

    packet = 0

    sleep(.20) # give it a little bit of time to fill ze buffers

    while (packets[packet] != "\0"):
        audio.write(packets[packet])
        packet += 1

Any tricks to this?

Edit: The answer is obvious and stupid. I was playing pandora while running the code, thus the speakers were "busy" doing that. Can anyone clarify why this is so? How can other applications all run multiple audio streams at the same time, yet I seemingly can't?

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