mirror of
https://github.com/HiMeditator/auto-caption.git
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8e575a9ba3
- 字幕记录表格可以按时间降序排列 - 将 caption-engine 重命名为 engine - 更新了相关文件和文件夹的路径 - 修改了 README 和 TODO 文档中的相关内容 - 更新了 Electron 构建配置
86 lines
2.9 KiB
Python
86 lines
2.9 KiB
Python
"""获取 MacOS 系统音频输入/输出流"""
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import pyaudio
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class AudioStream:
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"""
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获取系统音频流（支持 BlackHole 作为系统音频输出捕获）
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初始化参数：
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audio_type: 0-系统音频输出流（需配合 BlackHole），1-系统音频输入流
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chunk_rate: 每秒采集音频块的数量，默认为20
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"""
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def __init__(self, audio_type=0, chunk_rate=20):
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self.audio_type = audio_type
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self.mic = pyaudio.PyAudio()
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if self.audio_type == 0:
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self.device = self.getOutputDeviceInfo()
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else:
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self.device = self.mic.get_default_input_device_info()
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self.stream = None
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self.SAMP_WIDTH = pyaudio.get_sample_size(pyaudio.paInt16)
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self.FORMAT = pyaudio.paInt16
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self.CHANNELS = self.device["maxInputChannels"]
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self.RATE = int(self.device["defaultSampleRate"])
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self.CHUNK = self.RATE // chunk_rate
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self.INDEX = self.device["index"]
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def getOutputDeviceInfo(self):
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"""查找指定关键词的输入设备"""
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device_count = self.mic.get_device_count()
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for i in range(device_count):
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dev_info = self.mic.get_device_info_by_index(i)
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if 'blackhole' in dev_info["name"].lower():
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return dev_info
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raise Exception("The device containing BlackHole was not found.")
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def printInfo(self):
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dev_info = f"""
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采样输入设备：
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- 设备类型：{ "音频输出" if self.audio_type == 0 else "音频输入" }
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- 序号：{self.device['index']}
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- 名称：{self.device['name']}
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- 最大输入通道数：{self.device['maxInputChannels']}
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- 默认低输入延迟：{self.device['defaultLowInputLatency']}s
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- 默认高输入延迟：{self.device['defaultHighInputLatency']}s
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- 默认采样率：{self.device['defaultSampleRate']}Hz
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音频样本块大小：{self.CHUNK}
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样本位宽：{self.SAMP_WIDTH}
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采样格式：{self.FORMAT}
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音频通道数：{self.CHANNELS}
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音频采样率：{self.RATE}
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"""
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print(dev_info)
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def openStream(self):
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"""
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打开并返回系统音频输出流
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"""
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if self.stream: return self.stream
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self.stream = self.mic.open(
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format = self.FORMAT,
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channels = int(self.CHANNELS),
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rate = self.RATE,
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input = True,
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input_device_index = int(self.INDEX)
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)
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return self.stream
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def read_chunk(self):
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"""
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读取音频数据
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"""
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if not self.stream: return None
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return self.stream.read(self.CHUNK, exception_on_overflow=False)
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def closeStream(self):
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"""
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关闭系统音频输出流
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"""
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if self.stream is None: return
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self.stream.stop_stream()
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self.stream.close()
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self.stream = None
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