# 文件名: realtime_audio_widget.py # (已修改：添加音源选择下拉框，支持选择麦克风或系统内录设备) from PyQt6.QtWidgets import (QWidget, QVBoxLayout, QHBoxLayout, QPushButton, QGroupBox, QComboBox, QLabel, QSizePolicy) from PyQt6.QtCore import pyqtSignal, pyqtSlot import numpy as np import sounddevice as sd from waveform_widget import WaveformWidget class RealtimeAudioWidget(QWidget): """ 实时语音传输的UI (选项卡) """ # 信号: start_tx_streaming 现在携带一个 int 参数 (设备索引) start_tx_streaming = pyqtSignal(int) stop_tx_streaming = pyqtSignal() start_rx_playback = pyqtSignal() stop_rx_playback = pyqtSignal() def __init__(self, parent=None): super().__init__(parent) self.is_enabled = False self.device_list = [] self.init_ui() def init_ui(self): main_layout = QHBoxLayout(self) # --- 发射 (TX) --- tx_group = QGroupBox("实时发射 (音频源)") tx_layout = QVBoxLayout(tx_group) # [新增] 顶部控制栏 (标签 + 下拉框 + 按钮) tx_control_layout = QHBoxLayout() # 1. 标签 tx_control_layout.addWidget(QLabel("输入源:")) # 2. 音源选择下拉框 self.combo_source = QComboBox() self.combo_source.setSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Fixed) self.refresh_input_devices() # 填充设备列表 tx_control_layout.addWidget(self.combo_source) # 3. 开始/停止按钮 (变窄) self.btn_start_tx = QPushButton("开始发射") self.btn_start_tx.setCheckable(True) self.btn_start_tx.setFixedWidth(200) # 限制宽度 self.btn_start_tx.toggled.connect(self.on_tx_toggled) tx_control_layout.addWidget(self.btn_start_tx) # 将控制栏加入主垂直布局 tx_layout.addLayout(tx_control_layout) # 4. 波形图 self.tx_waveform = WaveformWidget() tx_layout.addWidget(self.tx_waveform) # --- 接收 (RX) --- rx_group = QGroupBox("实时接收 (扬声器)") rx_layout = QVBoxLayout(rx_group) # 接收端的控制栏 rx_control_layout = QHBoxLayout() self.btn_start_rx = QPushButton("开始实时播放") self.btn_start_rx.setCheckable(True) self.btn_start_rx.toggled.connect(self.on_rx_toggled) rx_control_layout.addWidget(self.btn_start_rx) rx_control_layout.addStretch() # 让按钮靠左 rx_layout.addLayout(rx_control_layout) self.rx_waveform = WaveformWidget() rx_layout.addWidget(self.btn_start_rx) rx_layout.addWidget(self.rx_waveform) main_layout.addWidget(tx_group) main_layout.addWidget(rx_group) self.set_enabled(False) # 默认禁用 def refresh_input_devices(self): """获取系统音频输入设备并填充下拉框""" self.combo_source.clear() self.device_list = [] try: devices = sd.query_devices() # 获取默认输入设备索引 default_input = sd.default.device[0] for idx, dev in enumerate(devices): # 过滤条件：必须有输入通道 if dev['max_input_channels'] > 0: name = dev['name'] api = dev.get('hostapi', -1) # 尝试获取API名称 (如 MME, WASAPI, DirectSound)以区分 # 注意：system loopback 往往在 Windows WASAPI 下可见 display_text = f"{idx}: {name}" # 标记默认设备 if idx == default_input: display_text += " [默认]" self.combo_source.addItem(display_text, idx) # UserData 存储设备ID # 如果是默认设备，自动选中 if idx == default_input: self.combo_source.setCurrentIndex(self.combo_source.count() - 1) # 添加一个特殊的刷新选项（可选，这里暂不加，用户重启软件即可） except Exception as e: self.combo_source.addItem(f"获取设备失败: {e}", -1) def on_tx_toggled(self, checked): if checked: self.btn_start_tx.setText("停止发射") self.combo_source.setEnabled(False) # 运行时禁止切换 # 获取选中的设备ID device_idx = self.combo_source.currentData() if device_idx is None: device_idx = -1 # 让 worker 使用默认 self.start_tx_streaming.emit(int(device_idx)) else: self.btn_start_tx.setText("开始发射") self.combo_source.setEnabled(True) self.stop_tx_streaming.emit() def on_rx_toggled(self, checked): if checked: self.btn_start_rx.setText("停止播放") self.start_rx_playback.emit() else: self.btn_start_rx.setText("开始实时播放") self.stop_rx_playback.emit() @pyqtSlot(object) def on_tx_waveform_update(self, chunk_array: np.ndarray): """[槽] 更新发射波形图""" if self.btn_start_tx.isChecked(): self.tx_waveform.update_waveform(chunk_array) @pyqtSlot(object) def on_rx_waveform_update(self, chunk_array: np.ndarray): """[槽] 更新接收波形图""" if self.btn_start_rx.isChecked(): self.rx_waveform.update_waveform(chunk_array) def set_enabled(self, enabled): """由主窗口调用，在连接后启用""" self.is_enabled = enabled self.btn_start_tx.setEnabled(enabled) self.combo_source.setEnabled(enabled) # 同时也启用下拉框 self.btn_start_rx.setEnabled(enabled) # 如果禁用了，确保按钮恢复到未选中状态 if not enabled: if self.btn_start_tx.isChecked(): self.btn_start_tx.setChecked(False) if self.btn_start_rx.isChecked(): self.btn_start_rx.setChecked(False)