upd 增加 预览视频的时候播放旁白音频

main_window.py

@@ -136,6 +136,7 @@ class MainWindow(QMainWindow, Ui_MainWindow):
         #在进行redo_undo时，会触发itemchange，但是这时候不能覆写历史。但是需要写入project。（注意命名思路：在进行redo的时候，会有两步操作，写入history和写入project。我们只希望他不写入history，所以命名中要带有history）
         self.can_write_history= True
 
+        self.previewed_audio = {}
 
     # 重写关闭Mmainwindow窗口
     def closeEvent(self, event):
@@ -371,12 +372,42 @@ class MainWindow(QMainWindow, Ui_MainWindow):
 
     # position 取值[0,总时长]
     def changeSlide(self, position):
+        print("position:", position)
         if not self.sld_video_pressed:  # 进度条被鼠标点击时不更新
             self.vidoeLength = self.player.duration()+0.1
             self.sld_video.setValue(round((position/self.vidoeLength)*100))
             self.lab_video.setText(utils.transfer_second_to_time(str(position/1000)))
-            # self.lab_video.setText("%.2f%%" % ((position/self.vidoeLength)*100))
 
+            # 播放音频
+            # 1、先找到要播放的音频
+            audio_path = None
+            for i in range(len(self.projectContext.aside_list)-1, -1, -1):
+                print("float(self.projectContext.aside_list[i].st_time_sec), ", float(self.projectContext.aside_list[i].st_time_sec))
+                if position/1000 > float(self.projectContext.aside_list[i].st_time_sec):
+                    audio_path = os.path.dirname(self.projectContext.excel_path) + ("/%.2f.wav" % float(self.projectContext.aside_list[i].st_time_sec))
+                    break
+            print("audio_path:", audio_path)
+            if audio_path != None and os.path.basename(audio_path) not in self.previewed_audio:
+                RunThread(funcName=self.play_audio,
+                          args=(audio_path, self.previewed_audio),
+                          name="play_audio").start()
+                # self.play_audio(audio_path)
+
+    @staticmethod
+    #一条语音的最长播放时间是10秒
+    def play_audio(path, previewed_audio):
+        #如果没有该音频，则直接return
+        if not os.path.exists(path):
+            return
+        file = QUrl.fromLocalFile(path)  # 音频文件路径
+        print("我要播放的file是", file)
+        content = QMediaContent(file)
+        player = QMediaPlayer()
+        player.setMedia(content)
+        player.play()
+        previewed_audio[os.path.basename(path)] = 1
+        import time
+        time.sleep(10)
     def openVideoFile(self):
         path = QFileDialog.getOpenFileUrl()[0]
         self.player.setMedia(QMediaContent(path))  # 选取视频文件